ACCUENERGY ACUDC 243 (01) PDF MANUAL


Post questions, comments, reviews or errors in the comment box below.

Your File is Ready … Download PDF

CLICK HERE TO DOWNLOAD ACCUENERGY ACUDC 243 (01) PDF MANUAL


PDF Content Summary: ACUDC 240 D C P O W E R & E N E R G Y M E T E R AcuDC 240 Series Power and Energy Meter User's Manual II PLEASE NOTE This manual may not be altered or reproduced in whole or in part by any means without the expressed written consent of ACCUENERGY. The information contained in this document is believed to be accurate at the time of publication, however, ACCUENERGY assumes no responsibility for any errors which may appear here and reserves the right to make changes without notice. Please ask the local representative for latest product specifications before ordering (contact information please see the following page). Windows®, Windows® Vista, Windows® 7, Windows® 8, and Windows® XP are registered trademarks of Microsoft Corporation. CUSTOMER SERVICE AND SUPPORT ACCUENERGY provides technical support Monday through Friday between 8:30AM and 5:00PM (EST). However, this manual provides a trouble shooting section in the Appendix that may provide a quicker solution than over the phone consultation. You can contact ACCUENERGY for support at: TF: 1-877-721-8908 INT: +1-416-497-4100 E: support@accuenergy.com When contacting ACCUENERGY please have the following prepared: / Meter’s part number + serial number (Both found on a sticker at the side of the meter)Multiple CT Input Options compatible with any CT: 5A/1A, 333mV, Flexible Rogowski Coil, 80/100/200mA / Hardware Version + Firmware Version(Refer to the Appendix C, ordering information) / A detailed problem description. PRODUCT WARRANTY ACCUENERGY provides a 5 year limited warranty for its products. 1. The warranty strictly covers manufacturing defects in material and workmanship in products bought with in United States and Canada. The warranty is valid from the date of purchase by the original purchaser and for a period of 60 months.Hardware Version + Firmware Version(Refer to the Appendix C, ordering information) 2. Exclusions: a) Damage or failure caused by abuse, misuse, faulty installation and operation, improper or inadequate maintenance, and any repair or guarantee on repairs not carried out by ACCUENERGY. b) Damage resulting from inadequate packaging or carrier mishandling of returned products. c) All products purchased outside United States of American and Canada. 3. It is original purchaser’s responsibility to provide a dated proof of purchase. The warranty is not transferable. 4. ACCUENERGY will at its sole discretion repair or exchange a product under warranty. No credit will be issued. 5. THE WARRANTY IS VOID WHEN: a) The product serial number has been altered or removed. b) The product has been altered, service or manipulated by anyone other than ACCUENERGY or without the prior written authorization of ACCUENERGY. 6. All shipping charges must be pre-paid by the sender. ACCUENERGY will, at its own expense, ship back the warranted repaired product to the sender anywhere within the United States and Canada. We will ship best way at our discretion. 7. To secure your warranty coverage, contact ACCUENERGY to obtain the registration card that must be filled out and sent or faxed back to ACCUENERGY with a copy of a dated proof of purchase. Products under warranty receive priority for repairs. III IV ABOUT ACCUENERGY Formed in 1998, Accuenergy is a leading producer of power and energy metering products for the distribution, control and management of electrical energy and other dynamic processes. Accuenergy’s vision is to make energy usage more dependable and efficient, and to make energy management more convenient and intelligent. Accuenergy products are easily integrated into new and existing energy management, automation and building control systems for intelligent and user-friendly energy systems and are backed by an industry-leading pre and post sale technical support and manufacturer’s warranty. With an emphasis on continuous improvement, innovation and high performance and cost-effective solutions, Accuenergy has developed a growing global footprint with offices in Toronto Canada (Headquarter), Los Angeles and Beijing. WARNINGS GLOSSARY The following symbols in this manual and on AcuDC 240 series meters are used to provide warning of danger or risk during the installation and operation of the meters. Electric Shock Symbol: Carries information about procedures which must be followed to reduce the risk of electric shock and danger to personal health. When this symbol is seen on the meter, consult this user manual. Refer to Chapter 2 for important safety information regarding mounting and wiring of the AcuDC meter. Safety Alert Symbol: Carries information about circumstances which if not considered may result in injury or death. Note: Please read this manual carefully before installation, operation and maintenance of an AcuDC 240 series meter. Installation and maintenance of the AcuDC 240 meter should only be performed by qualified, competent professionals who have received training and should have experience with high voltage and current devices. ACCUENERGY shall not be responsible or liable for any damages caused by improper meter installation and/or operation. TABLE OF CONTENTS CUSTOMER SERVICE AND SUPPORT .....................................................................II PRODUCT WARRANTY .................................................................................................III CHAPTER 1: Introduction to the AcuDC ................................................................1 1.1 Package Contents & Available Accessories ..............................................1 1.2 Introduction and Compliance ......................................................................1 1.2.1 Introduction ........................................................................................................................1 1.2.2 Compliance ........................................................................................................................2 1.3 Applications & Industries ................................................................................2 1.4 Features & Specifications ...............................................................................3 1.4.1 Features .................................................................................................................................3 1.4.2 Specifications ....................................................................................................................3 CHAPTER 2: Installation - Physical Setup............................................................7 2.1 Tools .........................................................................................................................7 2.1.1 Tools for Mounting ..........................................................................................................7 2.1.2 Tools for Wiring ................................................................................................................7 2.2 Mounting ..............................................................................................................7 2.2.1 Tools for Mounting..........................................................................................................8 2.2.2 Mounting I/O Modules Onto Meter ......................................................................9 2.3 Wiring .......................................................................................................................................12 2.3.1 Wiring Control Power ....................................................................................................13 2.3.2 Current Input Wiring ....................................................................................................14 2.3.3 Voltage Input Wiring ....................................................................................................16 2.3.4 Current & Voltage Wiring at the Same Time ...................................................17 2.3.5 Communications Wiring .............................................................................................20 2.4 Removing meter for servicing or maintenance ...................................21 CHAPTER 3: Installation - Configuration Parameter Set-up via display .............24 3.1 Display Panel and Keys ....................................................................................24 3.2 General Parameter Setup ...............................................................................25 3.2.1 Key’s Function in parameters setup .....................................................................26 3.2.2 Configure AcuDC to work with Shunt.................................................................26 3.2.3 Configure AcuDC to work with Current Hall Effect Sensor .....................27 3.2.4 Configure AcuDC to work with Current and Voltage Hall Effect Sensor 283.2.5 Clear Energy, Ah and DI Counter ...........................................................................29 V VI 3.2.6 Set Backlight Brightness ............................................................................................30 3.2.7 Meter Clock Setting ......................................................................................................30 3.2.8 Password Setting ............................................................................................................31 3.3 AcuDC Communication Setup .....................................................................31 3.4 I/O Parameter Setup.........................................................................................32 3.4.1 Meter Clock Setting .......................................................................................................32 3.4.2 RO parameter setting ..................................................................................................34 CHAPTER 4: Viewing Metering Parameters – VIA Display ............................40 4.1 General Display on the AcuDC ......................................................................40 4.2 View the Meter and Load Running Time .................................................43 4.3 View the serial number from the meter ..................................................44 CHAPTER 5: Viewing Real-time Readings Via AcuView Software ...........46 5.1 Connection Setup ..............................................................................................46 5.1.1 Wiring .....................................................................................................................................46 5.1.2 Acuview Software Setup .............................................................................................46 5.2 Configuration Parameters Setup ................................................................49 5.2.1 General Meter Parameter Setting ..........................................................................49 5.2.2 Configure the Data Log using the meter’s onboard memory ...............51 5.2.3 Configure the data log to log the readings on the computer’s memory 53 5.3 Viewing Metering Parameters ......................................................................56 5.3.1 Real-Time Metering .......................................................................................................56 5.3.2 Reading Data Log on Meter’s Onboard Memory ..........................................57 5.3.3 Reading Data Log on the computer’s memory .............................................58 APPENDIX ..........................................................................................................................60 A. Troubleshooting ..................................................................................................60 B. Modbus Register Map ........................................................................................63 B.1 MODBUS-RTU Protocol ...................................................................................................63 B.2 Communication Format ................................................................................................66 B.3 AcuDC240 Communication Address Table .........................................................71 C. Ordering Information ........................................................................................83 D. Glossary of Definitions ......................................................................................84 AcuDC 240 Series DC Power and Energy Meters Chapter 1: Introduction to AcuDC 1.1 Package Contents + Available Accessories 1.2 Introduction and Compliance 1.2.1 Introduction 1.2.2 Compliance 1.3 Applications & Industries 1.4 Features & Specifications 1.4.1 Features 1.4.2 Specifications Chapter 1: Introduction to AcuDC CHAPTER 1: INTRODUCTION TO THE ACUDC 1.1 Package Contents & Available Accessories When you open the package, you will find the following items: 1. AcuDC 240 Meter X1 2. Terminal Blocks X1 - X3 (Depending on model) 3. Installation Clips X4 (Already assembled to the meter) Available Accessories: I/O modules (Combinations of digital I/O, analog I/O and relay output) Current transformers USB to Serial Converters 1.2 Introduction and Compliance 1.2.1 Introduction Powerful Yet Cost-Effective AcuDC 240 series monitors DC voltage, current, power and energy. It supports bi- directional current measurement, and also displays meter running hour and load running hour. Analog Output applies to DCS system, industrial monitoring and control. AcuDC 240 has a combination of accurate measurement, intelligent multifunction and simple human machine interface. The cost-effective meter fulfills the requirements of monitoring and controlling the DC circuit. Compact and Easy to Install The dimensions of AcuDC 240 series meet DIN 72X72 requirements. With a mounting depth of 65mm, the meter can even fit in small drawer type cabinets. It utilizes a self-lock installation mechanism, eliminating the necessary of fix bolts, which makes installation or removal quick and convenient. User Friendly Interface AcuDC 240 series utilizes a clear high-definition LCD screen with large characters. The LCD screen comes with a brightness adjustable backlight, which ensures easy observation of metering data in any environment. With a large LCD screen display, the two keys on the meter from allow users to observe multiple parameter data at the same time. The meter parameter settings can be set either via front panel keys or the communication port. The Parameter settings are saved in the non-volatile EEPROM, which remains when power is off. accuenergy.com

V: 1.0 Revised: Jan. 2018 1 AcuDC 240 Series DC Energy & Power meters

High Safety and Reliability AcuDC 240 series meter was designed according to industrial standards. It can run reliably under high power disturbance conditions. This meter has been fully tested for EMC and safety compliance in accordance with multiple international standards. The casing is highly fire resistant due to high quality, durable engineering plastics. 1.2.2 Compliance The following table lists the compliances this meter meets:

Safety Conforms to UL Std 61010-1 Certified to CSA Std C22/2 No. 61010-1 CE certified. Quality Control Certified to ISO 9001:2008 standard Environmental IEC 60068-2; Nema3 Certified IP54 Certified 1.3 Applications & Industries Applications: / DC meter & metering Metering of DC consumption and generation of different DC electrical systems / DC transducer Installed transducer reads power, energy, voltage, current and amp hour data and outputs digital pulse and/or analog signals / DC data logger / data logging Installed meter reads, records and stores power, energy, voltage, current and amp hour data for subsequent download, reporting and analysis Industries: / Renewable energy & green systems Generation by solar photovoltaic (PV) arrays, wind turbines, inverter & battery monitoring, DC consumption of electric vehicle (EV) charging stations / Transportation Systems Consumption of rail / railway, subway and trains and transit systems and related DC equipment / Telecommunications Consumption on cell / cellular towers and equipment / Datacenters Consumption of data centers and equipment 2 V: 1.0 Revised: Jan. 2018 accuenergy.com

Chapter 1: Introduction to AcuDC 1.4 Features & Specifications 1.4.1 Features DC power system metering; Monitor and control power switches; Alarming and analog output; Standard 72x72mm, allows for drawer type panel installation; Three line high-definition LCD display; Accessible with SCADA, PLC systems; Easy installation, simple wiring; Data Logging: Offers 3 configurable historical logs where the all of the metering parameters can be recorded. The onboard memory is up to 4 MB and each log size is adjustable. 1.4.2 Specifications The following tables list the specifications of AcuDC 240 meter. Parameter Accuracy Resolution Range Voltage 0.2% 0.001 V 0~1200 V Current 0.2% 0.001 A 0~±50000 A Power 0.5% 0.001 kW 0~±60000 kW Energy 0.5% 0.01 kWh 0~9999999.99 kWh Drift with Temperature <100ppm / °C Stability 0.5‰/year Voltage Input Range Voltage Direct Input0~1000V; Via Hall Effect Sensor0~1200V Input Impedance 2MΩ Load <0.6W Accuracy 0.2% accuenergy.com

V: 1.0 Revised: Jan. 2018 3

AcuDC 240 Series DC Energy & Power meters Voltage Current 0~±10A(Direct Input, pick up current 0.01A) Input Range 0~±50000A(Via Shunt or Hall Effect Sensor, program- mable range) Shunt 50~100mV(programmable) Hall Effect Sensor 0~±5V/0-±4V, 4~20mA/12mA±8mA Power Consumption 2W(MAX) Accuracy 0.2% Digital Input Type Dry Contact Isolation Voltage 2500Vac Environment Operation Temperature -25°C ~ +70°C Storage Temperature -40°C ~ +85°C Humidity 5%~95%Non-condensing Output Relay Output (RO) Type Mechanical contact, Form A Max Load Voltage 250Vac/30Vdc Max Load Current 3A On Resistance 100mΩ (Max) Isolation Voltage 4000Vac Mechanical Life 5 × 106 times Digital Output (Photo-Mos) Load Voltage Range 0~250Vac/dc Load Current 100mA(Max) Max Output Frequency 25Hz, 50% duty cycle Isolation Voltage 2500Vac Analog Output (AO) Load Voltage Range 4-20mA/0~20mA; 0~5V/1-5V Load Current 0.5% Max Output Frequency Current type, max load resistance: 750 Ohm Voltage type, max load current: 20 mA 4 V: 1.0 Revised: Jan. 2018 accuenergy.com

Chapter 1: Introduction to AcuDC accuenergy.com Communication Type RS485, half duplex, Optical Isolated Protocol Modbus-RTU Baud Rate 1200~38400bps Isolation Voltage 2500VAC Power Relay Supply Input (P1)100-240Vac, 50/60Hz, 100-300Vdc (P2) 20-60Vdc Consumption 3W (typical value) Installation 72 x 72 mm Panel mounted Table 1-3 lists the functions of AcuDC240 series. Table 1-3 AcuDC 240 Series Function AcuDC 241 AcuDC 242 AcuDC 243 Metering Voltage V / / Current I / / Power P / Energy E / Ampere -Hour Ah / I/O ○ ○ ○ 2DI+2RO ○ ○ ○ 2DI+2DO ○ ○ ○ 2DI+ ±15Vdc ○ ○ ○ Data Logging 2DI+2AO Support DI Count All metering parameters can be recorded (Voltage, Current, Power, Energy, Ampere-hour, DI Count); Interval 1 minute; Can record 4 months ○ Communication RS485, Modbus RTU ○ ○ ○ Display LCD / / / Dimensions 72×72×64.5mm (Cutout: 68x68 mm) / 2.835 x 2.835 x 2.539 inch (Cutout: 2.677 x 2.677 inch) V: 1.0 Revised: Jan. 2018 5

AcuDC 240 Series DC Power and Energy Meters Chapter 2: Installation - Physical Setup 2.1 Tools 2.1.1 Tools for Mounting 2.1.2 Tools for Wiring 2.2 Mounting 2.2.1 How to choose installation place 2.2.2 Mounting I/O modules onto meter 2.2.3 Mounting meter onto switchboard panel 2.3 Wiring 2.3.1 Wiring Control Power 2.3.2 Current input wiring 2.3.3 Voltage input wiring 2.3.4 Current & Voltage wiring at the same time 2.3.5 I/O Module wiring 2.3.6 Communications wiring 2.4 Removing meter for servicing or maintenance accuenergy.com Chapter 2: Installation - Physical Setup CHAPTER 2: INSTALLATION - PHYSICAL SETUP 2.1 Tools 2.1.1 Tools for Mounting / #2 Flathead Screwdriver / Wire Cutters 2.1.2 Tools for Wiring / A 1A/250Vac circuit breaker for the auxiliary power supply loopWire Cutters / A 1A/250Vac circuit breaker should be used in the voltage input loop. / Choice of wire of power supply is AWG22-16 or 0.6-1.5mm2 / The wire for voltage input is AWG16-12 or 1.3-2.0mm2 / The wire size of current input is AWG15-10 or 1.5-2.5mm2 The following may be required: / If using RS485 for communication, use a good quality shielded twisted pair cable, AWG22 (0.5mm2) or higher / The wire of digital input should be chosen between AWG22~16 or 0.5~ 1.3mm2 / The wire of relay output should be chosen between AWG22~16 or 0.5~1.3mm2 / The wire of the digital output circuit should be chosen between AWG22~16 or 0.5~1.3 mm2 2.2 Mounting Considerations When Installing Meters / Installation of the meter must be performed by qualified personnel only, and should follow standard safety precautions through the installation procedures. Those personnel should have appropriate training and experience with high voltage devices. Appropriate safety gloves, safety glasses and protective clothing are recommended. / During normal operation, dangerous voltage may be present in many parts of the meter, including terminals, and any connected I/O (Inputs and Outputs) modules and their circuits. All primary and secondary circuits can, at times, produce lethal voltages. AVOID contact with any current-carrying surfaces. / The meter and its I/O output channels are NOT designed as primary protection devices and shall NOT be used as primary circuit protection or in an energy limiting capacity. The meter and its I/O output channels can only be used as secondary protection. AVOID using the meter under situations where failure of the meter may cause injury or death. AVOID using the meter for any application where risk of fire may occur. V: 1.0 Revised: Jan. 2018 7 V: 1.0 Revised: Jan. 2018 8AcuDC 240 Series DC Energy & Power meters / All meter terminals should be inaccessible after installation. / Applying more than the maximum voltage the meter and/or its modules can withstand will permanently damage the meter and/or its modules. Please refer to the specifications in section 1.4.1 for all devices before applying voltages. NOTE: If the equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may be impaired. NOTE: There is no required preventive maintenance or inspection necessary for safety. However, any repair or maintenance should be performed by the factory. DISCONNECT DEVICE: The following part is considered the equipment disconnect device. A switch or circuit- breaker shall be included in the installation. The switch shall be in close proximity to the equipment and within easy reach of the operator. The switch shall be marked as the disconnecting device for the equipment. 2.2.1 Tools for Mounting Note: Before installation, please check the environment, temperature and humidity to ensure the AcuDC 240 series meter is being placed in a proper place. 1. Temperature AcuDC 240 operation temperature is -25°C ~ 70°C, which will accommodate most user applications. If a special temperature range is needed, please contact Accuenergy. Please Note: It can influence the meter life negatively if the meter operates under extremely high or extremely low temperature environments. AcuDC 240 storage temperature is -40°C ~ 85°C. 2. Humidity 5% to 95% non-condensing 3. Location AcuDC 240 series meter should be installed in a dry and dust free environment. Avoid exposing meter to excessive heat, radiation and high electrical noise sources. Alert Alert Alert accuenergy.com accuenergy.com Chapter 2: Installation - Physical Setup 2.2.2 Mounting I/O Modules Onto Meter If the meter is equipped with an I/O module, you need to mount the module onto meter before installing the meter. Installation Method With the link pins, I/O module is linked to the meter. 1. Insert the mounting clips to the counterpart of AcuDC 240 meter, and then press the I/O module lightly, so linking is established, as shown in Fig 2-2.

(A) (C) (B) (D) V: 1.0 Revised: Jan. 2018 9

V: AcuDC 240 Series DC Energy & Power meters 2. Tighten the installation screws. Note: Install I/O Module carefully to avoid damage; under no circumstances should any installation be done with the meter powered on. Failure to do so may result in injury or death. 2.2.3 Mounting Meter Onto Switchboard Panel Appearance and DimensionsFig 2-3 AcuDC 240 Appearance Part Description 1. Casing High intensity fire resistant engineering plastics 2. Front Casing Visible portion after mounting onto a panel 3. Display Large LCD display 4. Key Two keys are used to select display and set 5. Voltage and Current Input Terminals Used for voltage and current input 6. Communication Terminals Communication output 7. I/O Module Optional I/O module 8. I/O Terminal Optional I/O terminals, including 2DI, 2AO/2RO 9. Power Supply Terminal Power supply terminal 10. Installation Clips Used for securing the meter to the panel 101.0 Revised: Jan. 2018 Table 2-1 Part Name of AcuDC 240 Fig 2-4 AcuDC 240 Dimensions accuenergy.com

accuenergy.com Chapter 2: Installation - Physical Setup Installation Steps AcuDC 240 series meter is generally installed into the switchboard panel. 1. Cut a square hole (Standard DIN). See figure 2-5 for dimensions. Unit:mm 2. Remove the clips (10) from the meter, and insert the meter into the square hole from the front side, as shown in following figures. Fig 2-5 Panel Cutout

a. Panel Cutout c. Putting back the Clips at the back of the Panel b. Inserting the Meter to the Panel Square Hole d. Installation Completed V: 1.0 Revised: Jan. 2018 11

V: AcuDC 240 Series DC Energy & Power meters 2.3 Wiring Terminal Strips There are 3 groups of current terminal strips. There will be another terminal strip if the meter is connected with the I/O module. a. Voltage and Current Terminal Strip c. I/O Terminal Strip (2DI+2AO) e. I/O Terminal Strip (2DI+±15V) Safety Earth Connection Before setting up the meter’s wiring, please make sure that the switchgear has an earth ground terminal. Connect both the meters and the switchgear’s ground terminal together. This ground terminal symbol is used in this user’s manual. 121.0 Revised: Jan. 2018 Fig 2-7 AcuDC 240 Terminal Strip b. Power Supply Terminal Strip d. I/O Terminal Strip(2DI+2RO/2DO) f. Communication Terminal Strip accuenergy.com

accuenergy.com Chapter 2: Installation - Physical Setup 2.3.1 Wiring Control Power CAUTION: Make sure you check the power supply option you have before energizing the meter. Check the silver sticker on the side of the meter to confirm what power supply option you have. The silver sticker on the side of the meter contains information such as the model number, power supply, voltage/current inputs and serial number. To power the meter, you need to connect the power supply terminal as shown below. This will be connected based on the two power supply options available, that is:

1A FUSE 11L/+Power Supply 12N/- AcuDC 240 13 G

Fig 2-9 Power Supply Wiring 1. The Standard option: 100-240Vac, 50/60Hz or 100-300Vdc 2. The Low Voltage DC option: 20-60Vdc The independent power supply circuit loop must have a fuse or air circuit breaker. The fuse could be 1A/250Vac, time delay type. If circuit breaker is used, a CE certified product with compliance of IEC947 is recommended. Terminal G (13) must be connected to the ground for the safety. An isolated transformer or EMC filter should be used in the auxiliary power supply loop if power quality problem exists in the power supply, as shown in following figure.

1A FUSE LL11L/+Power Supply NN12N/- AcuDC 240 G G 13 13 G G G

EMC filter 2-10 Power Supply Wiring with EMC Filter Choice of wire power supply is AWG16-22 or 0.6-1.5 mm2. V: 1.0 Revised: Jan. 2018 13 V: AcuDC 240 Series DC Energy & Power meters 2.3.2 Current Input Wiring AcuDC 240 meter current can be wired in three different ways: direct wiring, wiring using a shunt and wiring using a current Hall Effect sensor. NOTE: When wiring using a shunt or Hall Effect Sensor these must be wired on the negative terminal of the load that is being measured. Choice of wire current input is AWG15-16 or 1.5-2.5 mm2 or equivalent resistance wire. Fig 2-11a Wiring using a Shunt Fig 2-11b Direct Wiring 141.0 Revised: Jan. 2018 Vdc- Vdc+ Meter I/O terminal strip 17 18 19 20 21 22 23 24 DI11 DI12 DI21 DI22 NC V- GND V+ shunt Voltage, Current, Terminal Strip 6 45 23 1 I- I+ NC U- NC U+ Load I- I+ NC U- NC U+ Vdc- Vdc+ Meter I/O terminal strip 17 18 19 20 21 22 23 24 DI11 DI12 DI21 DI22 NC V- GND V+ Voltage, Current, Terminal Strip 123456 Load accuenergy.com accuenergy.com Chapter 2: Installation - Physical Setup Current Hall E ect Sensor Terminal I- I+ NC U- NC U+ Vdc- Vdc+ Meter Hall E ect Sensor I/O terminal strip 17 18 19 20 21 22 23 24 DI11 DI12 DI21 DI22 NC V- GND V+ 1Voltage, Current, Terminal Strip 2 3123456 4Load Fig 2-11 C Wiring using a Hall Effect Sensor Fig 2-11 Current Input Wiring Table 2-2 Accuenergy Line of Shunts/Hall Effect Sensors for Measuring Current Shunt (Works with AcuDC 243 A1 Current Input Option) NOTE: For measuring higher currents or larger window size openings, please contact Accuenergy’s Sales team. Hall Effect Sensor (Works with AcuDC 243 A2 Current Input Option) Rated Input: 50A Output: 75mV Rated Input: 50A Output: 4-20mA Window Size: 21mm Rated Input: 100A Output: 75mV Rated Input: 100A Output: 4-20mA Window Size: 21mm Rated Input: 200A Output: 75mV Rated Input: 200A Output: 4-20mA Window Size: 21mm Rated Input: 500A Output: 75mV Rated Input: 400A Output: 4-20mA Window Size: 40mm Rated Input: 1000A Output: 75mV Rated Input: 600A Output: 4-20mA Window Size: 40mm Rated Input: 1500A Output: 75mV Rated Input: 1000A Output: 4-20mA Window Size: 40mm Rated Input: 2000A Output: 75mV V: 1.0 Revised: Jan. 2018 15 V: AcuDC 240 Series DC Energy & Power meters 2.3.3 Voltage Input Wiring AcuDC 240 series meter Voltage can be wired in two different ways: direct wiring and wiring using a voltage Hall Effect sensor. Choice of wire for the voltage input is AWG16-22 or 0.6~1.5 mm2. Please see the wiring diagrams for details as shown in fig 2-12. I- I+ NC U- NC U+ Fig 2-12a Wiring using a Voltage Hall Effect Sensor Fig2-12b-Direct Wiring Fig2-12-Voltage Input Wiring 161.0 Revised: Jan. 2018 Vdc- Vdc+ Meter I/O terminal strip Hall E ect Sensor 17 18 19 20 21 22 23 24 DI11 DI12 DI21 DI22 NC V- GND V+ + Voltage, Current, Terminal Strip -IN- MIN+ 123456 TMeter Voltage, Current, Terminal Strip I- I+ NC U- NC U+ Vdc- Vdc+ I/O terminal strip 17 18 19 20 21 22 23 24 DI11 DI12 DI21 DI22 NC V- GND V+ 6 5 4 3 2 1 Load accuenergy.com accuenergy.com Chapter 2: Installation - Physical Setup 2.3.4 Current & Voltage Wiring at the Same Time You can wire the voltage and current for different systems based on the different methods above. Here are the common wiring methods used: 1. Direct voltage connection and a direct current connection see 2-13a. 2. Direct voltage connection and a current connection using a shunt see 2-13b. 3. Direct voltage connection and a current connection using a current Hall Effect sensor see 2-13c. The different wiring diagrams are shown below: Meter Vdc- Vdc+ I/O terminal strip 17 18 19 20 21 22 23 24 DI11 DI12 DI21 DI22 NC V- GND V+ Voltage, Current, Terminal Strip 123456 I- I+ NC U- NC U+ Load Fig 2-13a Direct Wiring Vdc- Vdc+ Meter I/O terminal strip 17 18 19 20 21 22 23 24 DI11 DI12 DI21 DI22 NC V- GND V+ shunt Voltage, Current, Terminal Strip 6 5 4 23 1 I- I+ NC U- NC U+ Load Fig 2-13b Voltage and Current Wiring Using a Shunt V: 1.0 Revised: Jan. 2018 17 V: AcuDC 240 Series DC Energy & Power meters Fig 2-13c Voltage and Current Wiring Using Current Hall Effect Sensor Fig 2-13 d Voltage and Current Wiring Using Hall Effect Sensors Fig 2-13-Typical Voltage and Current wiring diagram for systems 181.0 Revised: Jan. 2018 Vdc- Vdc+ Meter Hall E ect Sensor I/O terminal strip 17 18 19 20 21 22 23 24 DI11 DI12 DI21 DI22 NC V- GND V+ 1Voltage, Current, Terminal Strip 236 2345 1 4I- I+ NC U- NC U+ Load IN+ Hall E ect Sensor Vdc- Vdc+ Meter Voltage Hall E ect Sensors + I/O terminal strip -IN- 17 18 19 20 21 22 23 24 MTDI11 DI12 DI21 DI22 NC V- GND V+ 1Voltage, Current, Terminal Strip 2 3123456 4I- I+ NC U- NC U+ Current Hall E ect Sensors Load accuenergy.com accuenergy.com Digital Input AcuDC 240 optional I/O module is equipped with two dry contact digital inputs. The terminals are (17), (18), (19) and (20), as shown in figure 2-7. The Circuit is simplified as: When the switch is open, there is no current flowing into the diode side of the optical coupler, the triode is off, OUT is in low state. When the switch is closed, there is current flowing into the diode side, the triode is on, OUT is in high state. In this way, the ‘high’ and ‘low’ state of OUT corresponding to ‘closed’ and ‘’open’ state of the switch. The I/O module has built in power supply therefore the digital input does not require an external power supply. DI wire may choose AWG22-16 or 0.5-1.5 mm2. Analog Output AcuDC 240 I/O module offers two Analog Output modes, which are the current output 0-20mA/4-20mA(max 24mA) mode, and the voltage output 0-5V/1-5V(max 6V) mode, as shown in figure 2-15. NOTE: Each module can only has one type of output, please specify when ordering. Fig 2-15 Analog Output Wiring Chapter 2: Installation - Physical Setup V: 1.0 Revised: Jan. 2018 19 V: AcuDC 240 Series DC Energy & Power meters Relay Output The AcuDC 240 series I/O option has two relay outputs, which are terminal (21), (22) and (23), (24) as shown in Fig 2-7. They can be used to remotely control circuit breakers. The relay outputs are form A (normally open) electromagnetic relay. The nodal capacity is 3A/250 Vac or 3A/30Vdc. If the coil current is high, a medium relay is recommended. 2.3.5 Communications Wiring AcuDC 240 series meter uses RS485 serial communication and the Modbus RTU protocol. The terminals of communication are A, B and S (14, 15 and 16). A is differential signal +, B is differential -, and S is connected to the shield of twisted pair cable. The overall length of the RS485 cable connecting all devices cannot exceed 1200m (4000ft). Utilizing a large number of RS485 devices and utilizing a high baud rate will make the communication range shorter. AcuDC 240 works as a Slave device. Master device can be PC, PLC, Data Acquisition Device, or RTU. Suggestions to improve communication quality: A high-quality Shielded Twisted Pair cable, AWG22(0.6mm2) or larger diameter cable, is recommended. Two cables should be in different colors. / Pay attention to ‘single point earthling’. Make sure that there is only one point of the shielding connected to ground in a single communication link. / Every terminal A(+) should be connected to terminal A(+), terminal B(-) to terminal B(- ), or it will influence the network, or even damage the communication interface. / The connection topology should avoid ‘T’ type which means there is a new branch and it does not begin from the beginning point. / Keep communication cables away from sources of electrical noise whenever possible. 201.0 Revised: Jan. 2018 accuenergy.com accuenergy.com Chapter 2: Installation - Physical Setup When using a long communication cable to connect several devices, an anti signal reflecting resistor (typical value 120Ω-300 Ω/0.25W) is normally added to the end of the cable beside the last meter if the communication quality is distorted. Use RS485 converter with optical isolated output and surge protection. T/R+ T/R- RDX+ RDX- GND VCC S 16 1514RS485 Converter Communication Terminal Block Meter Fig 2-17 Communications Wiring 2.4 Removing meter for servicing or maintenance Power Supply Inputs The wires carrying power into the AcuDC 240 meter must be de-energized regardless of whether the meter is powered by an independent source or by the measured load line. De-energize the wires by turning off the switchgear (disconnect switch, breaker or fuse) leading to the terminal block for pins 11 through 13. The terminal block can then be safely removed. NOTE: Removing the terminal block without turning off the switchgear switch may expose the operator to visible/bare wires that are still connected to dangerously high voltage levels. This may cause injury or death. Voltage Inputs 1. Preparing for Safe Removal De-energize the leads into the voltage pins by turning off the switchgear. NOTE: Removing the voltage leads without turning off the switchgear will expose the operator to dangerously high voltage levels. This may cause injury or death. 2. Disconnecting the Voltage Inputs Using a #2 flathead screw driver, turn each of the screws on pins 1 and 3 counter- clock wise. Stop turning when the wires can be easily removed from their housing. V: 1.0 Revised: Jan. 2018 21 V: 1.0 Revised: Jan. 2018 22AcuDC 240 Series DC Energy & Power meters Current Inputs 1. Preparing for Safe Removal If the meter was wired directly in series to the current carrying lines without the use of a shunt/Hall effect sensor then the operator must de-energize the circuit before removing the circuit wires from the AcuDC meter. 2. Disconnecting the current inputs Using a #2 flat head screw driver, screw driver, turn the screws on pins 5 and pin 6 counter-clock wise. Stop turning when the wire can be easily removed from its housing. Cleaning the Meter ACCUENERGY recommends using a dry cloth to wipe the meter. accuenergy.com AcuDC 240 Series DC Power and Energy Meters Chapter 3: Installation - Configuration parameter set-up via display 3.1 Display panel and keys 3.2 General parameter setup 3.2.1 Key’s function in parameters setup 3.2.2 Configure AcuDC to work with shunt 3.2.3 Configure AcuDC for current hall effect sensor 3.2.4 Configure AcuDC for current and hall effect sensor 3.2.5 Clear energy Ah and DI counter 3.2.6 Set backlight brightness 3.2.7 Meter clock setting 3.2.8 Password setting 3.3 AcuDC Communication Setup 3.4 I/O Parameter Setup 3.4.1 AO parameter setting 3.4.2 RO parameter setting V: AcuDC 240 Series DC Energy & Power meters CHAPTER 3: INSTALLATION - CONFIGURATION PARAMETER SET-UP VIA DISPLAY 3.1 Display Panel and Keys The front of the AcuDC 240 series meter consists of an LCD screen and two control keys. All the display segments are illustrated in Fig 3-1. Users should note that all the segments will not display in a single page under normal conditions. There are two keys on the front panel, marked as ‘F’ key and ‘V/A’ key, which are used to display different parameter data and parameter settings. 4 1 SET 1kVkAkWMW 22 3 3kWh Fig 3-1 All Display Segments Number Display Description 1 Display data of voltage, current, power and energy 2 kV, kA, kW, MW, kWh, Hz, kvarh, kvar, kVAh Mvar, kVA, MVA, Data Unit 3 241.0 Revised: Jan. 2018 No Icon: no communication One icon: query sent Two icons: query sent and response re- ceived 4 Setting mode: Indicates the meter is in Setting Mode accuenergy.com accuenergy.com Chapter 3: Installation - Configuration Parameter Set-up 3.2 General Parameter Setup Press ‘F’ and ‘V/A’ simultaneously whiles in the metering display mode to get to the system parameter setting mode. In parameter setting mode, pressing ‘F’ and ‘V/A’ simultaneously will exit the system parameter setting mode and return to the metering data mode. General parameter setup will define the general operating characteristics, such as current range setting, shunt current output range setting, rated voltage of voltage Hall Effect sensor, reset energy, Ah and DI counter, meter clock setting, and password reset etc., as shown in table 3-2. NOTE: Some of these settings will vary depending on the model number and firmware version of the meter. Label Paramters Default Options Description Note Communica- tion address 1 The address can 1 ~ 247 be any integer between 1~247 Communication parameter setup 25 Assign different ad- dresses to meters on same bus Baud Rate 19200 1200; 2400; 4800; 9600; 19200; 38400 All devices on the same communica- tion bus must use the same baud rate Parity Non1 Data Transmission Rate even; odd; non1; non2 All devices on the same communica- tion bus must use the same parity Shunt/Hall Effect Sensor Parameter Setup Current input of the shunt / hall effect sensor Only indirect current measurement has this screen Current output of the shunt 20 20 ~ 50000A Corresponds to the output range of the shunt Hall Effect Sensor Setup 100 50 ~ 100mV output range of the current Hall Effect Sensor 0: 4~20mA/0~±5V 1: 4~12-20mA/0~±4V rated voltage of the Voltage Hall Effect Sensor 0 0; 1 Only meter with indi- rect voltage measure- ment has this screen. output range of the voltage Hall Effect Sensor 0 ~ 3000V 0 0; 1 0: 0 ~ ±5V; 1: 0 ~ ±4V Energy, Ah and DI counter clear setup Energy delete(energy clear) No: energy not NO NO; cleared; Yes Yes: clear energy to 0 V: 1.0 Revised: Jan. 2018 V: AcuDC 240 Series DC Energy & Power meters Label Paramters Default Options Description Note Energy, Ah and DI count- er clear setup 261.0 Revised: Jan. 2018 No: means DI counter not cleared DI; Yes: clear DI counter to 0 Brightness Setup DI counter delete(DI counter clear) NO NO; Yes 1: minimum light level; 5: maximum light level Meter Clock Setup Backlight brightness 5 1 ~ 5 Date 1 ~ 31 Year/month/ date Time 0 ~ 59 24-hour clock Password Setup Password 0000 4 Digitals 3.2.1 Key’s Function in parameters setup Press ‘F’ and ‘V/A’ simultaneously whiles in the metering display mode to get to the system parameter setting mode. In parameter setting mode, pressing ‘F’ and ‘V/A’ simultaneously will exit the system parameter setting mode and return to the metering data mode. In the setting mode: / ‘V/A’ can be used to confirm changes or go to the next screen / ‘F’ can be used to change a setting or enter edit mode. A digit When in edit mode: / Press ‘F’ to increase the number of the flashing digit / Press ‘V/A’ to switch the flashing digit / Press ‘V/A’ on the last digit to confirm the change; the cursor should stop flashing. Once you are in the settings mode, you will be required to type in a password on the ‘PASS’ screen. / Enter your password or leave it as default ‘0000’ if it wasn’t changed. / Press ‘V/A’ to enter the system parameter settings mode. 3.2.2 Configure AcuDC to work with Shunt If the meter is wired to use a shunt to measure the current, you need to configure the full range current setting and shunt output range in the AcuDC so that it can read accurately from the shunt. accuenergy.com accuenergy.com Chapter 3: Installation - Configuration Parameter Set-up Press ‘F’ and ‘V/A’ simultaneously whiles in the metering display mode to get to the system parameter setting mode. In the parameter setting mode, Press ‘V/A’ until you get to the ‘I In’ screen. Enter the rated current input of the shunt in this screen. SET Press ‘F’ to change this setting. A digit will begin to flash and you will enter the edit mode. Press ‘F’ to increase the value of the flashing digit and press ‘V/A’ to switch the flashing digit. Press ‘V/A’ when on the last digit to confirm the change; the cursor will stop flashing at this point Fig 3-2 Full range current setting NOTE: The setting can be configured in the range of 20-50000A. NOTE: Only indirect current wiring has this screen.

SET Press ‘F’ and ‘V/A’ simultaneously whiles in the metering display mode to get to the system parameter setting mode. In the parameter setting mode, press ‘V/A’ until the screen ‘I o’ displays. This setting corresponds to the output range of the shunt. Press ‘F’ to change this setting. The first digit will begin to flash. Press Fig 3-3 Full range shunt setting ‘F’ to increase the value of the flashing digit. Use ‘V/A’ to switch the flashing digit. Press ‘V/A’ to confirm the change on the last flashing digit to go to the next screen. NOTE: The setting can be configured in the range of 50-100mV. 3.2.3 Configure AcuDC to work with Current Hall Effect Sensor If the meter is wired to measure current using a Hall Effect sensor, you will have to configure the full range current setting and Current Hall Effect sensor output range in the AcuDC, so that it can read accurately from the Hall Effect Sensor. To change the settings from the meter’s display, first get to the parameter setting mode. V: 1.0 Revised: Jan. 2018 27

V: AcuDC 240 Series DC Energy & Power meters SET Refer to section 3.2.2 configure AcuDC to work with Hall Effect Sensor, first set the full range current setting as shown in Fig 3-2. Press ‘F’ and ‘V/A’ simultaneously whiles in the metering display mode to get to the system parameter setting mode. In the parameter setting mode, Press ‘V/A’ until you get to the ‘I In’ Fig 3-4 Current Hall Effect sensor setting screen as shown in Fig 3-2. Enter the rated current input of the shunt in this screen. After setting up the current range, press ‘V/A’ until the screen ‘I P’ displays. This setting corresponds to the output range of the Hall Effect Sensor. Press ‘F’ to change this setting and to select required output. Press ‘V/A’ to confirm this setting; the cursor will stop flashing at this point. NOTE: The default setting is ‘0’ for 4~20mA/0~±5V. The other mode is ‘1’ for 4-12~20mA/0~±4V. 3.2.4 Configure AcuDC to work with Current and Voltage Hall Effect Sensor If the meter is wired to measure current and voltage using a current hall effect sensor and voltage hall effect sensor respectively, You need to configure the settings in the AcuDC so that it can read accurately from both Hall Effect Sensors. Refer to section 3.2.2 configure AcuDC to work with shunt, first set up the current input range as shown in Fig 3-2 full range current setting. SET After setting up the current range, press ‘V/A’ to go to the next screen, as shown in Fig 3-5. This will be the ‘I P’ screen. This setting corresponds to the output range of the current Hall Effect Sensor. Press ‘F’ to change this setting and to select required output. Press ‘V/A’ to confirm this setting; the cursor will Fig 3-5 Current Hall stop flashing at this point. Effect sensor setting NOTE: The default setting is ‘0’ for 4~20mA/0~±5V. The other mode is ‘1’ for 4-12~20mA/0~±4V. 281.0 Revised: Jan. 2018 accuenergy.com accuenergy.com Chapter 3: Installation - Configuration Parameter Set-up SET After setting up the output range of the Current Hall Effect Sensor, as shown in Fig 3-5, press ‘V/A’ to go to the next screen. This will be the ‘U In’ screen, as shown in Fig 3-6. Enter the rated voltage of the Voltage Hall Effect Sensor. Press ‘F’ to change this setting. A digit will begin to flash and you will Fig3-6 Range Voltage setting enter edit mode. Press ‘F’ to increase the value of the flashing digit. Press ‘V/A’ to switch the flashing digit. Press ‘V/A’ when on the last digit to confirm the change; the cursor will stop flashing at this point. SET After setting up the rated voltage of the voltage Hall Effect Sensor, as shown in Fig 3-6, press ‘V/A’ to go to the next screen. This will be the ‘U P’ screen. This setting corresponds to the output range of the voltage Hall Effect Sensor. Press ‘F’ to change this setting and to select required output. Press ‘V/A’ Fig 3-7 Voltage Hall Effect Sensor setting to confirm this setting; the cursor will stop flashing at this point.

NOTE: The default setting is ‘0’: 0~±5V. The other mode is ‘1’: for 0~±4V. 3.2.5 Clear Energy, Ah and DI Counter

SET To clear the readings from the meter display mode, first get to the Setting mode. Press ‘F’ and ‘V/A’ simultaneously whiles in the metering display mode to get to the system parameter setting mode. In parameter setting mode, press ‘V/A’ until you get to the ‘EdEL’ screen, as shown in Fig 3-8. The screen Fig 3-8 Clear Energy displays ‘No’, which means energy not cleared. Press ‘F’ twice and it will show ‘YES’, which means ‘clear energy’, and the energy will be cleared to 0. After you choose ‘YES’ or ‘NO’, press ‘V/A’ to confirm and go to the next screen. SET Press ‘F’ and ‘V/A’ simultaneously whiles in the metering display mode to get to the system parameter setting mode. In parameter setting mode, press ‘V/A’ until you get to the ‘AdEL’ screen, as shown in Fig 3-9. The screen displays ‘No’, which means charge not cleared. Press ‘F’ twice and it will show Fig 3-9 Clear Ah ‘YES’, which means clear charge Ah, and the charge Ah will be cleared to 0. After you choose ‘YES’ or ‘NO’, press ‘V/A’ to confirm and go to the next screen. V: 1.0 Revised: Jan. 2018 29

V: AcuDC 240 Series DC Energy & Power meters SET Press ‘F’ and ‘V/A’ simultaneously whiles in the metering display mode to get to the system parameter setting mode. In parameter setting mode, press ‘V/A’ until you get to the ‘ddEL’ screen, as shown in Fig 3-10. The screen displays ‘No’, which means DI counter not cleared’. Press ‘F’ twice and it will show Fig 3-10 DI Counter Reset ‘YES’, which means clear Di counter , and DI counter will be cleared to 0. After you choose ‘YES’ or ‘NO’, press ‘V/A’ to confirm and go to the next screen. 3.2.6 Set Backlight Brightness To set the backlight brightness from the meter display mode, first get to the Setting mode. SET Press ‘F’ and ‘V/A’ simultaneously whiles in the metering display mode to get to the system parameter setting mode. In the parameter setting mode, press ‘V/A’ until you get to the ‘bL’ screen, as shown in Fig 3-11. There are 5 levels backlight brightness. ‘1’ is minimum light level and ‘5’ is maximum light Fig 3-11 Backlight Brightness Setting level. Press ‘F’ to select and press ‘V/A’ to confirm and go to the next screen. 3.2.7 Meter Clock Setting SET Press ‘F’ and ‘V/A’ simultaneously whiles in the metering display mode to get to the system parameter setting mode. In parameter setting mode, press ‘V/A’ until you get to the ‘dATE’ screen, as shown in Fig 3-12. Press ‘F’ to change this setting. A digit will begin to flash and you can change the number. Press Fig 3-12 Date ‘F’ to increase the value of the flashing digit. Press ‘V/A’ to switch Adjustment the flashing digit. Press ‘V/A’ when on the last digit to confirm the change; the cursor will stop flashing at this point. Press ‘V/A’ to confirm and go to the time setting screen. SET Press ‘F’ and ‘V/A’ simultaneously whiles in the metering display mode to get to the system parameter setting mode. In the parameter setting mode, press ‘V/A’ until you get to the ‘TinE’ screen, as shown in Fig 3-13. The meter uses the 24-hour clock system. The time shown in Fig 3-15 is 14:19:52. Press ‘F’ to change Fig 3-13 Time this setting. A digit will begin to flash and you can change the Adjustment number. Press ‘F’ to increase the value of the flashing digit. Press ‘V/A’ to switch the flashing digit. Pressing ‘V/A’ when on the last digit will confirm the change; the cursor will stop flashing at this point. Press ‘V/A’ to confirm and go to the next screen. 301.0 Revised: Jan. 2018 accuenergy.com accuenergy.com Chapter 3: Installation - Configuration Parameter Set-up 3.2.8 Password Setting SET Press ‘F’ and ‘V/A’ simultaneously whiles in the metering display mode to get to the system parameter setting mode. In parameter setting mode, press ‘V/A’ until you get to the ‘PASS’ screen, as shown in Fig 3-14. Press ‘F’ to change this setting. A digit will begin to flash and you can change the number. Press Fig 3-14 Password ‘F’ to increase the value of the flashing digit. Press ‘V/A’ to switch Setting the flashing digit. Press ‘V/A’ when on the last digit to confirm the change; the cursor will stop flashing at this point. Press ‘V/A’ to confirm and go to the next screen.

By now the parameter settings are almost completed, except for the I/O module setting. Pressing ‘F’ and ‘V/A’ simultaneously will exit system parameter settings mode and return to the metering data mode. 3.3 AcuDC Communication Setup NOTE: Only meters with communication options have device address, baud rate and parity setting screens. To set communication parameters from the meter display mode, you must first press the ‘F’ and ‘V/A’ buttons simultaneously to get to the parameter setting mode. The communication parameter setup includes address setup, Baud rate setup, and parity setting, as shown in table 3-3.

SET Communication address can be any integer 1 ~ 247. Fig 3-15 shows the address number is 1. Press ‘F’ to change this setting. The first digit will begin to flash and you can change the edit mode. Press ‘F’ to increase the value of the flashing digit. Press ‘V/A’ to switch the flashing digit. Press ‘V/A’ when on the last Fig 3-15 digit to confirm the change; the cursor will stop flashing at this Communication point. Press ‘V/A’ to confirm and scroll to the next screen. Address Setup

NOTE: Modbus-RTU communication protocol requires that all meters on the same communication bus should have different addresses.

SET After address setup, the second screen is Baud rate setting page, or in parameter setting mode, press ‘V/A’ until see ‘bPS’ on the screen. Baud rate can be set as 1200, 2400, 4800, 9600, 19200 and 38400. Fig 3-18 shows the baud rate is 19200 bps. Press ‘F’ to select the desired baud rate, and then press ‘V/A’ to Fig 3-16 Baud Rate confirm and go to the next screen. Setting V: 1.0 Revised: Jan. 2018 31

V: AcuDC 240 Series DC Energy & Power meters SET After Baud rate setup, the next screen is the Parity setting page, or in parameter setting mode, press the ‘V/A’ button until you see ‘CHEC’ on the screen. Parity can be set as EVEN: even parity, 1 stop bit; ODD: odd parity, 1 stop bit; 1: no parity, 1 stop bit; 2: no parity, 2 stop bits. Fig 3-17 shows no parity, and 1 stop bit. Press ‘F’ to select Fig 3-17 Parity the desired baud rate, and then press ‘V/A’ to confirm and go to Setting the next screen. NOTE: All devices on the same communication bus should use the same baud rate and parity settings. 3.4 I/O Parameter Setup I/O module has two optional types: AO(Analog Output) type and RO(Relay Output) type. In the system parameter setting operation, hold the ’F” key for 3 seconds to enter the AO parameter setting mode, or hold the ‘V/A’ key for 3 seconds to enter the RO parameter setting mode. In the AO or RO setting mode, key functions are the same as in system parameter settings mode. ‘F’ key is used to increase value by 1 for the flashing digit. ‘V/A’ key is used to confirm the flashing digit and move to the cursor. At the last digit of the parameter, pressing ‘V/A’ key will confirm and go to the next screen. On ant screen, pressing ‘F’ and ‘V/A’ simultaneously will exit AO or RO parameter settings mode and return to the system parameter settings mode. Note: only the meters have AO or RO functions have the valid operations for the corresponding AO or RO parameter setting . 3.4.1 Meter Clock Setting For the module that supports the Analog Output function, it offers two AO channels. The AO parameter can be voltage, current and power. AO upper and lower limits include ‘sign’ and ‘percentage’ digit. The sign digit has three options”: represents (+), represents (-), represents (±). The range of the percentage digit is ‘0.00~1.00’, representing ‘0%~100%’ of the full range value. When the AO parameter is set as voltage, the upper and lower limit setting is ‘0%~100%’. When AO parameter is set as current or power, there are four modes:’ 0%~ +100%’; 0%~ -100%’;’-100%~ +100%’ and ‘0%~ ±100%’. NOTE: 1. There is no ‘sign’ digit when AO is set as voltage. ‘sign’ digit is invisible when percentage is 0. 2. For limit setting, 1.00 is 100%, 0 is 0%, and 0.25 is 25%. 321.0 Revised: Jan. 2018 accuenergy.com

accuenergy.com Chapter 3: Installation - Configuration Parameter Set-up SET In parameter setting mode, hold ‘F’ for 3 seconds until the screen ‘AotP’ displays (as shown in Fig 3-18), the meter is in AO parameter setting mode. It is the AO output setting. There are four AO output modes: 0: 0 ~ 5V; 1: 1 ~ 5V; 2: 0 ~ 20mA; 3: 4 ~ 20mA. Press ‘F’ key to select the type number (0, 1, 2 or 3), and then press Fig 3-18 AO Output ‘V/A’ key to confirm and scroll to the next screen setting page. Setting For example, Fig 3-18 shows the output type is 3, it means its AO output type is 4~20mA mode. NOTE: AO output type is determined by the equipped I/O module you ordered; incorrect parameter setting will result in invalid AO output value. SET In AO parameter setting mode, press ‘V/A’ until the screen ‘Ao 1P’ displays (as shown in Fig 3-19). It is AO1 parameter setting. There are three options: 0: voltage; 1: current; 2: power. Press ‘F’ key to select the parameter number (0, 1, or 2), and then press ‘V/A’ key to confirm and scroll to the next screen setting page. Fig 3-19 Fig 3-19 AO1 shows the AO1 is se t as current. Parameter Setting NOTE: AcuDC 241 and 242 do not have this screen. AO1 is set as what is being measured. SET In AO parameter setting mode, press ‘V/A’ until the screen ‘Ao 1L’ displays (as shown in Fig 3-20). It is AO1 lower limit setting, range is ‘0.00 ~ 1.00’. There is no ‘sign’ digit when the limit is 0. When the limit is not 0, the ‘sign’ digit will be visible, the sign can be adjusted by moving the cursor to the digit. Press ‘F’ and ‘V/A’ to Fig 3-20 AO1 Lower Limit Setting SET 33 edit the value, and then press ‘V/A’ key to confirm and scroll to the next screen setting page. Fig 3-20 shows the AO1 lower limit is set as 0. In AO parameter setting mode, press ‘V/A’ until the screen ‘Ao 1H’ displays (as shown in Fig 3-21). It is AO1 upper limit setting, range is ‘-100% ~ +100%’. The entire upper limit’s absolute value cannot be smaller or equal to the lower limit’. Under no circumstance can the upper limit be 0. Press ‘F’ to edit the value, and then press Fig 3-21 AO1 Up Limit Setting ‘V/A’ key to confirm and scroll to the next screen setting page. Fig 3-21 shows the AO1 up limit is set as +100%. V: 1.0 Revised: Jan. 2018

V: AcuDC 240 Series DC Energy & Power meters SET In AO parameter setting mode, press ‘V/A’ until the screen ‘Ao 2P’ displays (as shown in Fig 3-22). It is AO2 parameter setting. There are three options: 0: voltage; 1: current; 2: power. Press ‘F’ key to select the parameter number (0, 1, or 2), and then press ‘V/A’ key to confirm and scroll to the next screen setting page. Fig 3-22 Fig 3-22 AO2 shows the AO2 is set as voltage. Parameter Setting NOTE: 241 and 242 do not have this screen. AO1 is set as what is being measured. SET In AO parameter setting mode, press ‘V/A’ until the screen ‘Ao 2L’ displays (as shown in Fig 3-23). It is AO1 lower limit setting, range is ‘0.00 ~ 1.00’. There is no ‘sign’ digit when the limit is 0. When the limit is not 0, the ‘sign’ digit will be visible, the sign can be adjusted by moving the cursor to the digit. Press ‘F’ to edit the Fig 3-23 AO2 Lower Limit Setting value, and then press ‘V/A’ key to confirm and scroll to the next screen setting page. Fig 3-23 shows the AO1 lower limit is set as 0. SET In AO parameter setting mode, press ‘V/A’ until the screen ‘Ao 2H’ displays (as shown in Fig 3-22). It is the AO2 upper limit setting, range is ‘-100% ~ +100%’. The entire upper limit’s absolute value cannot be smaller or equal to the lower limit’. Under no circumstance can the upper limit be 0. Press ‘F’ to edit the value, Fig 3-24 AO2 Up Limit Setting and then press ‘V/A’ key to confirm and scroll to the next screen setting page. Fig 3-24 shows the AO1 up limit is set as +100%. 3.4.2 RO parameter setting In the system parameter setting operation page after successfully entering the password, hold the ‘V/A’ key for 3 seconds to enter the RO parameter setting page. The I/O module that contains the Relay Output function offers two RO channels. There are three modes for RO: Latch, Momentary and alarm. The mode setting depends on the object requirement i.e. A circuit breaker use Momentary. The momentary delay time is 300-5000 ms. Due to the relay action time error, this delay time has up to 3ms error. 341.0 Revised: Jan. 2018 accuenergy.com accuenergy.com SET Fig 3-25 RO1 Mode Setting SET Fig 3-26 RO1 Momentary Delay Time SET Fig 3-27 RO1 Alarm Parameter Setting SET Fig 3-28 RO1 Alarm Inequality Setting SET Fig 3-29 RO1 Alarm Threshold Range Setting Chapter 3: Installation - Configuration Parameter Set-up RO1 mode setting: In the parameter setting mode, hold ‘V/A’ for 3 seconds until the screen ‘Ro1F’ displays (as shown in Fig 3-23), the meter is in RO parameter setting mode. There are 3 RO1 modes: 0: Latch; 1: Momentary; 2: Alarm. Press ‘F’ key to select the mode number (0, 1 or 2), and then press ‘V/A’ key to confirm and scroll to the next screen setting page. For example, Fig 3-25 shows the RO1 mode is Latch. RO1 momentary delay time setting: In RO parameter setting mode, if RO1 mode is set as 1, Momentary, press ‘V/A’ key until the screen ‘Ro1d’ displays. The delay range in 300 ~ 5000 ms. Press ‘F’ to set the delay time. And then press ‘V/A’ key to confirm and scroll to the next screen setting page. Fig 3-26 shows the RO1 momentary delay time is 500ms, or 0.5s. RO1 alarm parameter setting: In RO parameter setting mode, if RO1 mode is set as 2, Alarm, press ‘V/A’ key until the screen ‘Ro1P’ displays. There are 4 options: 0: no alarm; 1: voltage; 2: current; 3: power. Press ‘F’ to select setting and press ‘V/A’ key to confirm and scroll to the next screen setting page. Fig 3-27 shows the RO1 alarm is ‘no alarm’. RO1 alarm inequality setting: In RO parameter setting mode, if RO1 mode is set as 2, Alarm, press ‘V/A’ key until the screen ‘Ro1S’ displays. There are 2 options: 0: smaller than; 1: larger than. Press ‘F’ to select and press ‘V/A’ key to confirm and scroll to the next screen setting page. RO1 alarm threshold range setting: In RO parameter setting mode, if RO1 mode is set as 2, Alarm, press ‘V/A’ key until the screen ‘Ro1u’ displays. The threshold setting range is the same as measurement range. Voltage: 0 ~ 3000V; Current: 0 ~ 50000A; Power: 0- 60000kW. Press ‘F’ to edit the value, and press ‘V/A’ key to confirm and scroll to the next screen setting page. V: 1.0 Revised: Jan. 2018 35

V: AcuDC 240 Series DC Energy & Power meters SET RO1 alarm delay setting: In RO parameter setting mode, if RO1 mode is set as 2, Alarm, press ‘V/A’ key until the screen ‘Ro1t’ displays. The alarm delay time range is 0 ~ 255 s. In Fig 3-30, the alarm delay time is 15 seconds. If the alarm condition is met, after 15 second, the alarm will be triggered; or if the alarm Fig 3-30 RO1 Alarm Delay Setting condition is no longer met, after 15 seconds, the alarm will be restored. Press ‘F’ to edit the value, and press ‘V/A’ key to confirm and scroll to the next screen setting page. SET RO2 mode setting: In RO parameter setting mode, press ‘V/A’ until the screen ‘Ro2F’ displays (as shown in Fig 3-31). There are 3 RO2 modes: 0: Latch; 1: Momentary; 2: Alarm. Press ‘F’ key to select the mode number (0, 1 or 2), and then press ‘V/A’ key to confirm and scroll to the next screen setting page. For example, Fig 3-31 RO2 Mode Fig 3-29 shows the RO2 mode is Latch. Setting SET RO2 momentary: In RO parameter setting mode, if RO1 mode is set as 1, Momentary, press ‘V/A’ key until the screen ‘Ro2d’ displays. The delay range in 300 ~ 5000 ms. Press ‘F’ to set the delay time and then press ‘V/A’ key to confirm and scroll to the next screen setting page. Fig 3-30 shows the R21 momentary Fig 3-32 RO2 delay time is 500ms, or 0.5s. Momentary Delay Time SET RO2 alarm parameter setting : In RO parameter setting mode, if RO2 mode is set as 2, Alarm, press ‘V/A’ key until the screen ‘Ro2P’ displays. There are 4 options: 0: no alarm; 1: voltage; 2: current; 3: power. Press ‘F’ to select and press ‘V/A’ key to confirm and scroll to the next screen setting page. Fig 3-33 shows the Fig 3-33 RO2 Alarm RO2 alarm parameter is set as ‘voltage’. Parameter Setting SET RO2 alarm inequality setting: In RO parameter setting mode, if RO2 mode is set as 2, Alarm, press ‘V/A’ key until the screen ‘Ro2S’ displays. There are 2 options: 0: smaller than; 1: larger than. Press ‘F’ to select and press ‘V/A’ key to confirm and scroll to the next screen setting page. Fig 3-34 RO2 Alarm Inequality Setting 361.0 Revised: Jan. 2018 accuenergy.com

accuenergy.com Chapter 3: Installation - Configuration Parameter Set-up SET RO2 alarm threshold range setting: In RO parameter setting mode, if RO2 mode is set as 2, Alarm, press ‘V/A’ key until the screen ‘Ro2u’ displays. The threshold setting range is the same as measurement range. Voltage: 0 ~ 3000 V; Current: 0 ~ 50000A; Power: 0~ 60000kW. Press ‘F’ to edit the value and press ‘V/A’ key Fig 3-35 RO2 Alarm to confirm and scroll to the next screen setting page. Threshold Range Setting SET RO2 alarm delay setting: In RO parameter setting mode, if RO2 mode is set as 2, Alarm, press ‘V/A’ key until the screen ‘Ro2t’ displays. The alarm delay time range is 0 ~ 255, unit: second. In Fig 3-36, the alarm delay time is 15 second. If the alarm condition is met, after 15 second, alarm will be triggered; or if the alarm Fig 3-36 RO2 Alarm Delay Setting condition is no longer met, after 15 seconds, the alarm will be restored. Press ‘F’ to edit the value, and press ‘V/A’ key to confirm and scroll to the next screen setting page. Table 3-3 I/O Parameter Setting Label Paramters Options Description AO Output 0; 1; 2; 3 0: 0 ~ 5V; 1: 1 ~ 5V; 2: 0 ~ 20mA; 3: 4 ~ 20mA AO1 Parameter 0; 1; 2 0: voltage; 1: current; 2: power AO1 lower limit 0.00 ~ 1.00 0%-100% AO (Analogy Output) AO1 up limit -1.00 ~ +1.00 37 -100%~100% The entire upper limit’s absolute value should be larger than the lower limit. AO2 parameter 0; 1; 2 0: voltage; 1: current; 2: power AO2 lower limit 0.00 ~ 1.00 0%~100% AO2 up limit -1.00 ~ +1.00 -100%~100% The entire upper limit’s absolute value should be larger than the lower limit. RO 0: Latch; RO1 mode 0; 1; 2 1:Momentary; 2: Alarm RO1 momentary delay time 300 ~ 5000 Unit: ms RO1 alarm parameter 0; 1; 2; 3 0: no alarm; 1: voltage; 2: current; 3: power V: 1.0 Revised: Jan. 2018

V: AcuDC 240 Series DC Energy & Power meters Label Paramters Options Description RO 381.0 Revised: Jan. 2018 RO1 alarm inequality 0; 1 0: smaller than; 1: larger than RO1 alarm threshold range Voltage: 0 ~ 3000 V; Current: 0 ~ 50000A; Power: 0~ 60000kW. RO1 alarm delay 0 ~ 255 unit: second RO2 mode 0; 1; 2 0: Latch; 1:Momentary; 2: Alarm RO2 momentary delay time 300 ~ 5000 Unit: ms RO2 alarm parameter 0; 1; 2; 3 0: no alarm; 1: voltage; 2: current; 3: power RO2 alarm inequality 0; 1 0: smaller than; 1: larger than RO2 alarm threshold range Voltage: 0 ~ 1200V; Current: 0 ~ 50000A; Power: 0~ 6000kW RO2 alarm delay 0 ~ 255 unit: second accuenergy.com

AcuDC 240 Series DC Power and Energy Meters Chapter 4: Viewing Metering Parameters via Display 4.1 General Display on the AcuDC 4.2 View the Meter and Load Running Time 4.3 View the Serial Number from the Meter V: 1.0 Revised: Jan. 2018 40AcuDC 240 Series DC Energy & Power meters CHAPTER 4: VIEWING METERING PARAMETERS – VIA DISPLAY You can view different information from the metering screen. For example, you can view voltage, current, power, energy, electric charge and clock information. In the metering screen, press ‘F’ to go to next screen, press ‘V/A’ to go to the different windows to view different information. 4.1 General Display on the AcuDC AcuDC 240 normally displays the metering screen, which shows real-time measured data, such as voltage, current, power, energy, meter clock, DI counter etc., as shown in table 4-1. The first screen on the metering screen shows voltage, current and power. Please note that AcuDC241 only shows voltage and AcuDC242 only shows current. Only AcuDC243 shows voltage, current and power at the same time. accuenergy.com accuenergy.com Chapter 4: Viewing Metering Parameters via Display V For the AcuDC 241, it only displays voltage, and there is a unit ‘V’ shown at the top right corner. For example, the screen in Fig. 4-1 shows it is AcuDC 241, and the voltage is 220.2V. Fig 4-1 Voltage Display (AcuDC 241) For the AcuDC 242, it only displays current, and there is a unit ‘A’ k shown at the top right corner. For example, the screen in Fig. 4-2 Shows it is AcuDC 242, and the current is 49.99A. Fig 4-2 Current Display (AcuDC 242) For the AcuDC 243, the screen displays current, voltage and 1 V AkW power, and the units are ‘V, A and kW’ shown at the top right 2corner. The first line displays voltage, the second line displays current and the third line displays power. For example, the voltage 3shown in the left figure is 220.2V; the current shown in the left figure is 49.99A, the power shown in the left figure is 11.00KW. Fig 4-3Multifunction Communication status is active. Display (AcuDC 243) NOTE: Communication status is displayed on every screen in AcuDC 243. Press ‘F’ to view the Energy data. You can press ‘V/A’ on the energy screen to switch between different types of energy. E1 = Import Energy (consumed energy), E2 = Export Energy (generated energy) , E3 = Total Energy (absolute sum of import energy and export energy), and E4 = Net Energy (algebraic sum of import energy and export energy). kWh kWh kWh kWh (a) Import Energy (b) Export Energy (c) Total Energy (d) Net Energy Fig 4-4 Energy Display V: 1.0 Revised: Jan. 2018 41 V: AcuDC 240 Series DC Energy & Power meters Press ‘F’ to go to the third screen. The third screen shows Electric charge. You can press ‘V/A’ on the electric charge screen to switch between different types of charges. Ah1 = Import Charge, Ah2 = Export Charge, Ah3 = Total Charge (absolute sum of Import Charge Ah and Export Charge Ah), and Ah4 = Net Charge (algebraic sum of Import Charge Ah and Export Charge Ah).(a) Import Charge (b) Export Charge Fig 4-5 Charge Display Press ‘F’ to go to the fourth screen. The fourth screen shows clock information. For example, screen displayed in Fig 4-6a shows the date is 2014:04:09; screen displayed in Fig 4-6b shows the time is 14:19:52. You can press ‘V/A’ on the clock information screen to switch between the date and time. (a) Date Display Fig 4-6 Clock Information Display If the meter is equipped with DI counting function (AcuDC 240 with I/O module), press ‘F’ key to go to the DI count display screen. You can press ‘V/A’ on the DI counting screen to switch between the DI1 and DI2 counting. (a) DI1 Count Display Fig 4-7 DI Count Display 421.0 Revised: Jan. 2018 (c) Total Charge (b) Time Display (b) DI2 Count Display (d) Net Charge SET accuenergy.com accuenergy.com Chapter 4: Viewing Metering Parameters via Display Screen No. Widnow No. Description Operation Voltage Current Power 1 1 241 only displays voltage; 242 only displays current; 243 displays all First screen in metering data display mode Energy E1 2 1 E1: import energy Press ‘F’ at last screen E2 2 E2: export energy Press ‘V/A’ E3 3 E3: Total energy Press ‘V/A’ E4 4 E4: net energy Press ‘V/A’ Charge Ah1 3 1 Ah1: import charge Press ‘F’ at last screen Ah2 2 Ah2: export charge Press ‘V/A’ Ah3 3 Ah3: Total charge Press ‘V/A’ Ah4 4 Ah4: net charge Press ‘V/A’ Meter Clock Date 4 1 Year/month/day Press ‘F’ at last screen Time 2 Hour/min/sec 24-hour clock Press ‘V/A’ DI count number DI1 Count 5 1 Press ‘F’ at last screen DI2 Count 2 Press ‘V/A’ 4.2 View the Meter and Load Running Time If you press down the ‘F’ button for about 3 seconds while in the metering data mode, you will get to the meter information display mode. You can press ‘F’ to exit the meter information display mode. / In this meter information display mode, you can press ‘V/A’ to switch between the meter running hours and load running hours. ‘r’ means meter running hours while ‘L’ means load running hours. (a) Meter Running (b) Load Running Time Time Fig 4-8 Running Time Display V: 1.0 Revised: Jan. 2018 43 V: 1.0 Revised: Jan. 2018 44AcuDC 240 Series DC Energy & Power meters 4.3 View the serial number from the meter If you press down the ‘V/A’ button for about 3 seconds while in the metering data mode, you will get to the serial number display mode. You can press ‘V/A’ to exit the serial number display mode. Fig 4-9 Serial Number NOTE: This screen displays the last 8 digits of the meter’s serial number. accuenergy.com AcuDC 240 Series DC Power and Energy Meters Chapter 5: Viewing Real-Time Readings via Acuview Software 5.1 Connection Setup 5.1.1 Wiring 5.1.2 Acuview software setup 5.2 Configuration Parameters Setup 5.2.1 General meter parameter setting 5.2.2 Configure the Data Log using the meter’s memory 5.2.3 Configure the Data Log to log to computer memory 5.3 Viewing Metering Parameters 5.3.1 Real-time Metering 5.3.2 Reading Data Log on meter’s onboar memory 5.3.3 Reading Data Log on a computer’s memory V: AcuDC 240 Series DC Energy & Power meters CHAPTER 5: Viewing Real-time Readings Via AcuView Software This chapter will mainly discuss how to use the meter via the communication port using software. It is highly recommended that previous chapters be read before moving onto Chapter 5, a familiarity with Modbus would also be helpful. 5.1 Connection Setup 5.1.1 Wiring Refer to section 2.3.6(Communications Wiring) 5.1.2 Acuview Software Setup 1. New Connection: A connection is required before communicating with the meter. To add a new connection, do one of the following: 1) Click Setting > Connection Manager or2) Click the icon / New: add a new connection / Delete: Delete the select connection / Edit: Edit the selected connection settings. / Close: Close the window / Status: ‘Available’ means Com Port is active, and ‘not Available’ means Com Port is inactive. If the status is blank, it means that Com Port has not been established. 461.0 Revised: Jan. 2018 The Connection Manager is shown as in Fig 5-1. Fig 5-1 Connection Manager accuenergy.com accuenergy.com 2. Connection Settings: Set the connection parameters. The Connection Settings box is shown on the screen as in Fig. 5-2 Click ‘OK’ after settings finish. 1) Click Operation > Add Device or2) Click the icon Fig 5-2 Acuview Software Connection Settings / Name: Give connection a name / Type: Select the serial port that the RS485 connection is using / Com Port: Select the serial port that the RS485 connection is using / Baud Rate: Should match the baud rate in the meter settings. / Parity: Should match the parity in the meter settings. / Scan Interval: Used to adjust the time interval between two message(200ms or 500ms is recommended) NOTE: Baud Rate and Parity must match between meter and software. NOTE: How to find ‘Com Port’ in your computer Right click on ‘Computer’, then click ‘Properties’ menu. In the pop up window click on ‘Device Manager’ from the left navigation panel to find the port number. In the device Manager window, double click on ‘Port (COM&LPT)’ from the dropdown list. Find the ‘USB Serial Port (COMx)’ the number in brackets is the port number, i.e. COM4. Please select the corresponding Com Port here. Chapter 5: Viewing Real-Time Readings via Acuview Software

V: 1.0 Revised: Jan. 2018 47

V: AcuDC 240 Series DC Energy & Power meters 3. Add Device: After performing step 1 and 2 above, you need to add a device to communicate with. To add a new device, do one of the following: 1) Click Operation >Add Device or2) Click the icon The Add Device box is shown as Fig 5-3. Click ‘OK’ after settings finish. Fig 5-3 Add Device / Device Type: The model of the device you are going to communicate with / Connection: Select a connection for the communication / Device Address: Should match the address in the meter settings / Description: Device description such as where the device is used, for example, ‘Building 1’. 481.0 Revised: Jan. 2018 accuenergy.com

accuenergy.com 4. Connection: You can read all the measurement data after you successfully complete Step 3. To connect, do one of the following: 1) Click Operation > Connect Or 2) Click the icon Or 3) Press F9 on keyboard If the connection is successful, the screen will show the measured data on the screen, and you will see ‘Com Failure = 0, Log Failure = 0’ at the bottom right corner on the screen. If the connection is not successful, no measured data will appear on the screen, and you will see ‘Com Failure = 1, Log Failure = 0’ at the bottom right corner on the screen in red. NOTE: If connection is not successful, please make sure: The physical connection of the device is correct; the communication parameters, such as Baud Rate, Parity, device type and device address are not properly set. 5.2 Configuration Parameters Setup 5.2.1 General Meter Parameter Setting / From the left navigation panel click on the ‘Settings’ tab and then on ‘General’. You can set up the system parameters and I/O settings from this section, as shown in Fig 5-4. / Click on ‘Update Device’ after making changes, so that the changes can be saved on the meter. Parameters can be setup with following rules: Security and Communication: You can set the meter’s password, device address, Baud Rate and parity from this section and the meter will make the corresponding changes. Voltage and Current: If you are measuring your voltage using a voltage Hall Effect sensor and/or your current using either a Hall Effect sensor or a shunt, you will have to set the Voltage and/or Current sections. Chapter 5: Viewing Real-Time Readings via Acuview Software

V: 1.0 Revised: Jan. 2018 49

V: 1.0 Revised: Jan. 2018 50AcuDC 240 Series DC Energy & Power meters RO1 Output Mode/RO2 Output Mode: This is available with the ‘X3’ module Choose between the three modes: / Latch: To manually turn on and off the relay / Momentary: To turn on the relay for a set number of seconds before it goes back off. / If momentary mode is selected, set the delay time ‘On Time’; the range is 300- 5000ms. The delay time has an error of up to 3ms (due to the relay action time error) / Alarm: To trigger the relay output through an alarm event. RO Alarm Limit: Set the Alarm Channel, Setting, Setpoint and Delay (in sec) for both RO1 and RO2; this is needed if RO1/RO2 Output mode is set as ‘Alarm’ Fig 5-4 General settings accuenergy.com

accuenergy.com Chapter 5: Viewing Real-Time Readings via Acuview Software Raw Channel of AO1/Raw Channel of AO2: The settings are available with the X1 and X2 modules Select the parameter (Voltage, Current, Power) you will like to send as an Analog Output. Set the High and Low Limit based on the parameter you have selected. Note: / When AO parameter is set as voltage, the upper and lower limit setting range is between 0% - 100%. E.g. it can be set as: 0% - 100%, 0% - 50% etc. / When AO parameter is set as current or power, there are four different modes for the upper and lower limit setting range. It can be between: 0% - +100%, 0% - -100%, -100% - +100%, and 0% - ±100%. E.g. it can be set as: 0% - +50%, 0% - -50% etc. / Upper Limit cannot be 0% Other: / You can adjust the backlight brightness under the Backlight Adjustment section. The range is from 1 to 5. DI 1 Type/ DI 2 Type: Select DI 1 or DI 2 as: / State: DI will act as a switch status monitor / Counter: DI will act as a pulse counter. NOTE: You can ‘import’ a saved device profile to quickly setup the meter parameters: Click Tools->Import Device Settings, select the desired file and click ‘Open’, and after importing successfully, click ‘Update Device’, or click Tools->Import and Update Device, select the desired file. You also can save the current settings to a file via the export device profile function in ‘Tools’. 5.2.2 Configure the Data Log using the meter’s onboard memory You can set up the meter to log data on the onboard memory. / From the left navigation panel click on the settings tab then click ‘Data Log’ to access the data log setting page (as shown in Fig 5-5).

V: 1.0 Revised: Jan. 2018 51

V: AcuDC 240 Series DC Energy & Power meters Fig 5-5 Data Log readings Parameter Selection: Select the parameters you would like to log (from the left box), click ‘Add’ to add them to the box on the right. Enable Data Log: Make sure you check the box ‘Enabled’ to enable data log. Time Setting: There are three different Logging Modes. / Continuous: This will start logging data immediately, after the ‘Update Device’ button is clicked. / In this mode, you will have to set the Logging Interval. / Scheduling: This will start logging data from a set Start Time. / In this mode, you will have to set the Logging Interval and Start Time. NOTE: When the memory is full, a memory sector is deleted and the data logging will continue for the above two modes. / Interval: This will log data from a start time to an end time. / In this mode, you will have to set the Logging Interval, as well as the Start Time and End Time. NOTE: When the memory is full, the data logging will stop. Make sure to click on ‘Update Device’ after making changes, so that the changes can be saved on the meter. NOTE: When you click on ‘Update Device’, the meter’s data log memory will be erased. 521.0 Revised: Jan. 2018 accuenergy.com

accuenergy.com 5.2.3 Configure the data log to log the readings on the computer’s memory This applies to AcuDC 240 series meters with communication option; the meters do not need to have onboard memory since the data will be logged directly on the computer’s memory. You can set up the meter to log data directly on the computer memory. You must always be connected to the software for this data log method to work. You can access this data log setting by clicking on the ‘Settings’ option located on the menu toolbar, and then clicking on ‘Data Log Settings’ or click the icon Fig 5-6 Accessing Data Log The Data Log Setting window will open. This is shown in Fig 5-6. In data log setting, as shown in Fig 5-7, make sure you check the ‘Enabled’ box in the window. Under the ‘Logging Items of Selection’ Section: click on the required groups of parameters you will like to log. Under the ‘Logging Options’ Section: Chapter 5: Viewing Real-Time Readings via Acuview Software

V: 1.0 Revised: Jan. 2018 53

V: AcuDC 240 Series DC Energy & Power meters In data log setting, as shown in Fig 5-7, make sure you check the ‘Enabled’ box in the window. Under the ‘Logging Items of Selection’ Section: click on the required groups of parameters you will like to log. Under the ‘Logging Options’ Section: / Choose the ‘Logging Data Interval’. / Choose between the options ‘Log data until file is full’ or ‘Specify Log file duration’ / If ‘Specify Log file duration’ is selected: Choose how often you want a new file created. / Choose the ‘Log file format’ you want the file(s) saved as. Enter the preferred name for the file in ‘Log file name’. Choose the ‘Log file folder location’ where the file(s) will be saved. Once everything is set, click ‘OK’. Finally, make sure you click the icon 541.0 Revised: Jan. 2018 on the top of the screen to start data logging on the computer. You can click the icon Fig 5-7 Data Log settings on the top of the screen to stop data logging. accuenergy.com

accuenergy.com WARNING: If ‘Excel’ is chosen as the ‘Log file format’: After you click on the icon to start data logging, a warning window will pop up. Take note of the warning in order to prevent your files from being corrupt.Fig 5-8 Warning To get help or more information on the Acuview software, please click ‘help’ in the main menu bar, of click the icon . Chapter 5: Viewing Real-Time Readings via Acuview Software V: 1.0 Revised: Jan. 2018 55

V: 1.0 Revised: Jan. 2018 56AcuDC 240 Series DC Energy & Power meters 5.3 Viewing Metering Parameters 5.3.1 Real-Time Metering From the left navigation panel click on the ‘Readings’ tab and then select ‘Real-Time Metering’ to view the meter’s real time data. You can read voltage, current, energy, charge etc, as shown in Fig 5-9. You can modify the value of energy and charge by clicking the underlined figures. And you can also reset the energy, charge, DI counter and Max and Min by clicking ‘Reset’, the values will reset to 0. On this reading window you can also control relay 1 and relay 2. Fig 5-9 Reading Real Time Meter (change another picture, with load, this reading without load, so voltage is 0) accuenergy.com

accuenergy.com 5.3.2 Reading Data Log on Meter’s Onboard Memory From the left navigation panel click on the ‘Readings’ tab and then select ‘Data Log’ to retrieve the meter’s logged readings. The parameter settings for data log in meter’s onboard memory refer to section 5.2.2 (Configure the Data Log using the meter’s onboard memory). On this window you can view the data log, while the maximum record number is 85995. Chapter 5: Viewing Real-Time Readings via Acuview Software Fig 5-12 Reading Data Log on Meter’s Onboard Memory

V: 1.0 Revised: Jan. 2018 57

V: 1.0 Revised: Jan. 2018 58AcuDC 240 Series DC Energy & Power meters 5.3.3 Reading Data Log on the computer’s memory Find the data log files from the specified folder location where the file was saved. The parameter settings for data log on the computer’s memory refer to section 5.2.3. If you chose the default path, there is a folder named MonData in the Acuview installation directory where all the data log files are stored. By default, each file name consists of device description, device type, port(Serial mode), device address and data logging starting time whose format is YYYYMMDD(Year, Month, Day). After you open a data log file, you will see the following items: ‘Time U (V) I (A) P (kW)’. The file content is the same whether data is saved as .txt or .csv or .Excel. accuenergy.com

AcuDC 240 Series DC Power and Energy Meters Appendix A. Troubleshooting B. Modbus Register Map B.1 MODBUS-RTU Protocol B.2 Communication Format B.3 AcuDC 240 Communication Address Table C. Ordering Information D. Glossary of Definitions V: 1.0 Revised: Jan. 2018 60AcuDC 240 Series DC Energy & Power meters APPENDIX This chapter will mainly discuss how to use the meter via the communication port using software. It is highly recommended that previous chapters be read before moving onto Chapter 5, a familiarity with Modbus would also be helpful. A. Troubleshooting My AcuDC 243 is displaying the correct current but the power (kW) is negative. Check to see if the AcuDC is installed on the negative terminal of the load. Why is my AcuDC 243 measuring the wrong current with the Current Hall Effect Sensor? A connection is required before communicating with the meter. To add a new connection, do one of the following: / The Hall Effect Sensor should be installed on the negative side of the load. / Ensure that the Hall Effect sensor is being powered. If the sensor was purchased from Accuenergy then the sensor will need a ±15V dc power supply. / Ensure that the wiring of the sensor is to the AcuDC is correct. / Terminal 3 of the sensor should be connected to ‘I+’ of the AcuDC 243. / Terminal 4 of the sensor should be connected to ‘I-‘of the AcuDC 243. •/ Terminal 4 of the sensor must also be connected to Ground. •/ Check that the settings in the meter are configured to read accurately from that sensor. •/ Press ‘F’ and ‘V/A’ simultaneously whiles on the meter data mode to get to the settings mode. •/ A password screen will display. Leave the password as default ‘0000’ and press ‘V/A’ to enter the setting mode; the communication address ‘AddR’ screen will display next. •/ Press ‘V/A’ until you get to the ‘I In’ screen. Enter the rated current input of the Hall Effect Sensor in this screen. •/ Press ‘F’ to change this setting. A digit will begin to flash and you will enter the edit mode. •/ Press ‘F’ to increase the value of the flashing digit •/ Press ‘V/A’ to switch the flashing digit •/ Press ‘V/A’ when on the last digit to confirm the change; the cursor will stop flashing at this point accuenergy.com accuenergy.com Appendix SET •/ Press ‘V/A’ to go to the next screen. This will be the ‘I P’ screen. This setting corresponds to the output range of the Hall Effect Sensor. •/ Press ‘F’ to change this setting and to select required output. NOTE: The default setting is ‘0’ for 4-20mA/0-±5V. The other mode is ‘1’ for 4-12-20mA/0-±4V. •/ Press ‘V/A’ to confirm this setting; the cursor will stop flashing at this point SET Why is my AcuDC 243 measuring the wrong current with the shunt I am using? / The shunt should be installed on the negative side of the load. / Ensure that the AcuDC 243 is wired correctly to the shunt so that it can be read accurately. / The positive output from the shunt should be connected to the AcuDC 243 ‘I+’ terminal. / The negative output from the shunt should be connected to the ‘AcuDC 243 ‘I-‘terminal. / If the voltage is also being measured ensure that the positive DC source is connected to the AcuDC 243 ‘V+’ terminal whiles the AcuDC 243 ‘V-‘ terminal should be connected to the ‘I-‘ terminal on the AcuDC 243. / Ensure that the shunt being used outputs a signal in the range of 50-100mV to work with the meters current input. / Check that the settings in the meter are configured to read accurately from the shunt. / Press ‘F’ and ‘V/A’ simultaneously whiles on the meter data mode to get to the settings mode. V: 1.0 Revised: Jan. 2018 61 V: AcuDC 240 Series DC Energy & Power meters / A password screen will display. Leave the password as default ‘0000’ and press ‘V/A’ to enter the setting mode; the communication address ‘AddR’ screen will display next. / Press ‘V/A’ until you get to the ‘I In’ screen. Enter the rated current input of the shunt in this screen. / Press ‘F’ to change this setting. A digit will begin to flash and you will enter the edit mode. / Press ‘F’ to increase the value of the flashing digit / Press ‘V/A’ to switch the flashing digit / Press ‘V/A’ when on the last digit to confirm the change; the cursor will stop flashing at this point. SET / Press ‘V/A’ to go to the next screen. This will be the ‘I o’ screen. This setting corresponds to the output range of the shunt. / Press ‘F’ to change this setting. The first digit will begin to flash and you will enter the edit mode. / Press ‘F’ to increase the value of the flashing digit / Press ‘V/A’ to switch the flashing digit / Press ‘V/A’ when on the last digit to confirm the change; the cursor will stop flashing at this point SET Why won’t my meter connect to the AcuView software? / The physical connection of the device is incorrect, please refer to section 2.3.6; / The communication parameters, such as Baud Rate, Parity, device type, device address are not properly selected the same as the meter. / The “Com Port” in the software is not selected as the same as the computer. Please refer to section 5.1.2. 621.0 Revised: Jan. 2018 accuenergy.com accuenergy.com Appendix B. Modbus Register Map This chapter will discuss how to operate the meter via the communication port using software. Before starting this chapter, you should be familiar with Modbus and read other chapters of this manual to make sure that you have a good understanding of the functions and applications of this product. This chapter includes: Modbus protocol, communication format and communication address table. B.1 MODBUS-RTU Protocol Modbus RTU protocol is used for AcuDC 240’s communication. Data format and error check methods are defined in Modbus protocol. The half duplex query and respond mode is adopted in Modbus protocol. Modbus allows master device (PC, PLC etc.) to communicate with slave devices, it will not allow data exchange between slave devices. Therefore, terminal devices will not engage the communication link at initialization, only response to the master’s request. B.1.1 Transmission Mode The mode of transmission defines the data structure within a frame and the rules used to transmit data. / Coding System 8 bit / Start Bit 1 bit / Data Bits 8bits / Parity Even/ Odd/ None2/ None1 / Stop Bit 1/2bit / Error Checking CRC V: 1.0 Revised: Jan. 2018 63 V: AcuDC 240 Series DC Energy & Power meters B.1.2 Modbus Protocol 1. Frame When data frame reaches the terminal unit, the unit removes the data frame’s header, reads the data, if there is no error, it’ll implement the data’s task. Afterwards, the unit puts its own data with the acquired header, and sends back the frame to the sender. The response data frame contains: Address, Data and CRC Check. Any error will cause a failure to respond. Table B-1 Data Frame Format Address Function Data Check 8-Bits 8-Bits N X 8-Bits 16-Bits 2. Address Field The address field is at the start of the frame. It is composed of 1 byte (8 bits), its decimal value range is 0~255. A master addresses a slave by placing the slave address in the address field of the message. When the slave sends its response, it places its own address in this address field of the response to let the master know which slave is responding. 3. Function Field When a message is sent from a master to a slave device, the function code field tells the slave what kind of action to perform. Table B-2 Function Code Code Meaning Action 01 Read RO Status Obtain Relay Output Current Status (ON/OFF) 02 Read DI status Obtain Digital Input Current Status(ON/OFF) 03 Read holding register Obtain Current Binary Value of One or Multiple Registers 05 Control RO Control Relay Output(ON/OFF)) 16 Preset multiple registers Place Specific Binary Value into Multiple Registers 641.0 Revised: Jan. 2018 accuenergy.com accuenergy.com Appendix 4. Data Field Data field contains the data that terminals need to complete the request and the data that terminals respond to the request. This Data may be a numerical value, address or setting. For example, Function Code tells the terminal to read one register, Data Field needs to specify from which register and how many registers to read. 5. Error Check Field The field allows the error check by master and slave devices. Due to electrical noise and other interfaces, a group of data may be changed while transmitting from one location to the other. Error Check ensures master or slave devices do not respond to the distorted data during the transmission, which enhance the system security and efficiency. Error Check uses 16-bit Cyclic Redundancy Check (CRC 16). 6. CRC Check Every message includes an error checking field which is based on the Cyclical Redundancy Check(CRC) method. The CRC field checks the contents of the entire message. It is applied regardless of any parity check method used for the individual characters of the message. The CRC field is two bytes long, containing a 16-bit binary value. The CRC value is calculated by the transmitting device, and is appended to the message. The receiving device recalculates the CRC value during reception of the message, and compares the calculated value to the actual value it received in the CRC field. An error will be reported if the two values are not equal. CRC calculation is first started by preloading the whole 16-bit register to 1’s. The process begins by applying successive 8-bit bytes of the message to the current contents of the register. Only the eight bits of data in each character are used for generating the CRC. Start and stop bits, and the parity bit, do not apply to the CRC. When generating the CRC, each 8-bit character is exclusive ORed with the register contents. The result is shifted towards the least significant bit (LSB), with a zero filled into the most significant bit (MSB) position. The LSB is extracted and examined, if the LSB equals to 1, the register is exclusive ORed with a preset, fixed value; if the LSB equals to 0, no action will be taken. This process is repeated until eight shifts have been performed. After the last (eighth) shift, the next 8-bit byte is exclusive ORed with the register’s current value, and the process repeats for eight more shifts as described above. The final contents of the register, after all the bytes of the message have been applied, the final contents of the register, which should exchange the high-byte and low-byte, is the CRC value. When the CRC is appended to the message, the low-order byte is appended first, followed by the high-order byte. V: 1.0 Revised: Jan. 2018 65 V: AcuDC 240 Series DC Energy & Power meters B.2 Communication Format This section will illustrate the format indicated in Table B-3. Table B-3 Protocol Illustration (Hex value and Decimal value) Addr Fun Data Start Reg Hi Addr: Slave device address Data start reg hi: Start register address, high byte Data start reg lo: Start register address, low byte Data# of reg hi: Number of registers, high byte Data# of reg lo: Number of registers, low byte CRC 16 hi: CRC high byte CRC 16 lo: CRC low byte B.2.1 Read Relay Output Status (Function Code 01) Query The master device sends query frame to the slave device. Function Code 01 allows users to acquire the relay output status (1=ON, 0=OFF) of the slave device with the specified address. Along with slave device address and function code, query frame must contain the relay register starting address and the number of registers to be read. AcuDC 240 relay output address starts from 0000H (Relay 1=0000H, Relay 2=0001H). Table B.4 depicts reading Relay 1 and 2 statuses from slave address 17. Table B-4 Query Frame of Reading Relay Output Status 661.0 Revised: Jan. 2018 Data Start Reg Lo Data # of Regs Hi Data # of Regs Lo CRC16 Hi CRC 16 Lo Hex 06H 03H 00H 00H 00H 21H 84H 65H Dec 6 3 0 0 0 33 132 101 Addr Fun Data Start Reg Hi Data Start Reg Lo Data # of Regs Hi Data # of Regs Lo CRC16 Hi CRC 16 Lo Hex 11H 01H 00H 00H 00H 02H BFH 5BH Dec 17 1 0 0 0 2 191 91 accuenergy.com accuenergy.com Appendix Response The slave device answers the master device’s query. The response frame contains slave device address, function code, data quantity and CRC check. Each relay utilizes one bit (1=ON, 0=OFF). Table B-5 depicts the response frame. Table B-5 Response Frame of Reading Relay Output Status Addr Fun Byte Count Data CRC16 Hi CRC 16 Lo Hex 11H 01H 01H 02H D4H 89H Dec 17 1 1 2 212 137 Data Bytes 7 6 5 4 3 2 1 0 0 0 0 0 0 0 1 0 (Relay 1=OFF, Relay 2=ON) B.2.2 Read DI Status (Function Code 02) Query This function allows the user to obtain DI status ON/OFF (1=ON, 0=OFF). On top of slave device address and function code, query frame must contain the digital input register, starting address and the number of registers to be read. AcuDC 240 DI address starts from 0000H (DI1-0000H, DI2-0001H). Table B.6 depicts reading DI1 to DI2 status of the slave device with the address of 17. Table B-6 Query Frame of Reading DI Status Addr Fun Data Start Reg Hi Data Start Reg Lo Data # of Regs Hi Data # of Regs Lo CRC16 Hi CRC 16 Lo Hex 11H 02H 00H 00H 00H 02H FBH 5BH Dec 17 2 0 0 0 2 251 91 V: 1.0 Revised: Jan. 2018 67 V: AcuDC 240 Series DC Energy & Power meters Response The slave device answers the master device’s query. The response frame contains slave device address, function code, data quantity and CRC check. Each DI utilizes one bit (1=ON, 0=OFF). Table B-7 depicts the response frame. Table B-7 Response Frame of Reading DI Status Addr Fun Byte Count Data CRC16 Hi CRC 16 Lo Hex 11H 02H 01H 01H 64H 88H Dec 17 2 1 1 251 136 B.2.3 Read Data (Function Code 03) Query This function allows the master to obtain the measurement results from the meter. Table B.6 depicts reading slave device (address 1) voltage. The AcuDC 240 voltage address is 0200H-0201H. Table B-8 Query Frame of Reading Voltage Addr Fun Data Start Reg Hi Response Response frame contains slave device address, function code, data quantity and CRC check. Table B-9 depicts the response of V=402851D8H (2.6299953V) Table B-9 Response Frame of Reading Voltage 681.0 Revised: Jan. 2018 Data Start Reg Lo Data # of Regs Hi Data # of Regs Lo CRC16 Hi CRC 16 Lo Hex 01H 03H 02H 00H 00H 02H C5H B3H Dec 1 3 2 0 0 2 197 179 Addr Fun Byte Count Data1 Hi Data1 Lo Data2 Hi Data2 Lo CRC16 Hi CRC 16 Lo Hex 01H 03H 04H 40H 28H 51H D8H 52H 31H Dec 1 3 4 64 40 81 216 82 49 accuenergy.com accuenergy.com Appendix B.2.4 Control Relay Output (Function Code 05) Query This query frame forces the rely status to ON or OFF. The AcuDC 240 relay output address starts from 0000H(Relay 1= 0000H, Relay 2= 0001H). Data FF00H changes the relay status to ON, data 0000H changes the relay status to OFF. The relay will not be influenced by any other data input. The following is to query slave device 1 to set relay status as ON. Table B-10 Query Frame of Control Relay Status Addr Fun DO Addr Hi DO Addr Lo Value Hi Value Lo CRC16 Hi CRC 16 Lo Hex 01H 05H 00H 00H FFH 00H 8CH 3AH Dec 1 5 0 0 255 0 140 58 Response The correct response to this request is to send back the received data after the relay status is changed. Table B-11 Response Frame of Control Relay Status Addr Fun DO Addr Hi DO Addr Lo Value Hi Value Lo CRC16 Hi CRC 16 Lo Hex 01H 05H 00H 00H FFH 00H 8CH 3AH Dec 1 5 0 0 255 0 140 58 V: 1.0 Revised: Jan. 2018 69 V: AcuDC 240 Series DC Energy & Power meters B.2.5 Read Data (Function Code 03) Query Function Code 16 (10 H Hex) allows the user to modify the contents of multiple registers. AcuDC 240 system parameters can be written by this function code. The following example depicts how to preset slave device 1’s AO1 parameter (current), lower limit sign (+), lower limit value (0%), upper limit sign(+), upper limit value (100%) Table B-12 Query Frame of Preset Multiple Registers Addr Fun Data Start Reg Hi Response The correct response is to send back the address, function code; data starting address, data number, CRC check after the value is changed. Table B-13 Preset Multiple Registers Response 701.0 Revised: Jan. 2018 Data Start Reg Lo Data # of Regs Hi Data # of Regs Lo Byte Count Value 1 Hi Value 1 Lo Hex 01H 10H 01H 09H 00H 05H 0AH 00H 01H Dec 1 1 9 0 5 10 0 1 Value 2 Hi Value 2 Lo Value 3 Hi Value 3 Lo Value 4 Hi Value 4 Lo Value 5 Hi Value 5 Lo CRC 16 Hi CRC 16 Lo 00H 00H 00H 00H 00H 00 00H 64H C5H 8AH 0 0 0 0 0 0 0 100 197 138 Addr Fun Data Start Reg Hi Data Start Reg Lo Data # of Regs Hi Data # of Regs Lo CRC 16 Hi CRC 16 Lo Hex 01H 10H 01H 09H 00H 05H D1H F4H Dec 1 16 1 9 0 5 209 244 accuenergy.com accuenergy.com Appendix B.3 AcuDC240 Communication Address Table Basic Measurement Parameter Address Use Function Code 03 to read Table 5-14 Real-Time Measurement Address Table Address (Hex) Address (dec) Parameter Data Type Property 0200H- 0201H 512- 513 Voltage Float R 0202H- 0203H 514- 515 Current Float R 0204H- 0205H 516- 517 Power Float R 0206H- 0207H 518- 519 AO1 Float R 0208H- 0209H 520- 521 AO2 Float R 020AH- 020BH 522- 523 DI1 Count Value UINT32 R 020CH- 020DH 524- 525 DI2 Count Value UINT32 R NOTE: The high byte is followed by the low byte. Running Time The data space below is for running time; function code: 03 Read. Table B-15 Running Time Address Table Address (Hex) Address (dec) Parameter Range Data Type Property 0280H-0281H 640- 641 Meter run- ning time 0 ~ 999999999 long R 0282H- 0283H 642- 643 Load run- ning time 0 ~ 999999999 long R V: 1.0 Revised: Jan. 2018 71 V: AcuDC 240 Series DC Energy & Power meters Energy The data space below is for energy; Function Code: 03 Read; 16 Write Table B-16 Energy and Charge (Ah) Address Table Address (Hex) Address (dec) Parameter Range Data Type Property 0300H- 0301H 768- 769 Import energy 0 ~ 999999999 long R/W 0302H- 0303H 770- 771 Export energy 0 ~ 999999999 long R/W 0304H- 0305H 772- 773 Total energy 0 ~ 999999999 long R/W 0306H- 0307H 774- 775 Net energy 0 ~ ± 999999999 long R/W 0308H- 0309H 776- 777 Import Ah 0 ~ 999999999 long R/W 030AH- 030BH 778- 779 Export Ah 0 ~ 999999999 long R/W 030CH- 030DH 780- 781 Total Ah 0 ~ 999999999 long R/W 030EH- 030FH 782- 783 Net Ah 0 ~ ± 999999999 long R/W The relationship between the register value and the real value (Rx is the register value). Table B-17 The relationship between Register Value and Real Value Parameter Relationship Unit Voltage Real=Rx V Current Real=Rx A Power Real=Rx kW Energy Real=Rx/100 kWh Ah Real=Rx/100 Ah AO Real=Rx V or mA(depends on the AO Type) Running Time Real=Rx/100 Hour 721.0 Revised: Jan. 2018 accuenergy.com accuenergy.com Appendix Real-Time Clock Area (Data obtained only by AcuDC 243 meter equipped with storage function.) Table B-18 Real Time Clock Address Table Address (Hex) Address (dec) Parameter Range Data Type Property 0284H 644 Year 2000 ~ 2099 Word R/W 0285H 645 Month 1 ~ 12 Word R/W 0286H 646 Day 1 ~ 31 Word R/W 0287H 647 Hour 0 ~ 59 Word R/W 0288H 648 Minute 0 ~ 59 Word R/W 0289H 649 Second 0 ~ 59 Word R/W MAX records (Data obtained only by AcuDC 243 meter equipped with storage function.) Function code: 03H for reading Table B-19 MAX Records Address Table Address (Hex) Parameter Range Data Type Property 0400H- 0401H Voltage MAX Float R 0402H Time of occurrence, Year, Month, Day, Hour, Minute, Second High byte: year; low byte: month 0403H High byte: day; low byte: hour Word R 0404H High byte: minute; low byte: second 0405H- 0406H Current MAX Float R 0407H Time of occurrence, Year, Month, Day, Hour, Minute, Second High byte: year; low byte: month 0408H High byte: day; low byte: hour Word R 0409H High byte: minute; low byte: second 040AH- 040BH Power MAX Float R 040CH Time of occurrence, Year, Month, Day, Hour, Minute, Second High byte: year; low byte: month 040DH High byte: day; low byte: hour Word R 040EH High byte: minute; low byte: second V: 1.0 Revised: Jan. 2018 73


FREE ENGLISH PDF

OPERATING INSTRUCTIONS

USER GUIDE - USER MANUAL

OWNER GUIDE - OWNER MANUAL

REFERENCE GUIDE - REFERENCE MANUAL

INSTRUCTION GUIDE - INSTRUCTION MANUAL

Leave a Reply