SOLARX POWER BMS PARALLEL BOX-II (01) PDF DOCUMENT

The following safety symbols are used in the manual to indicate hazardous situations:

DANGER!: Indicates a hazardous situation which, if not avoided, will result in serious injury or death.

WARNING!: Indicates a hazardous situation which, if not avoided, could result in serious injury or death.

CAUTION!: Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.

NOTE!: Provides tips that are valuable for the optimal operation of your product.

Please adhere to the following safety instructions when handling the SOLARX POWER BMS PARALLEL BOX-II:

DANGER!

Danger to life due to high voltages in the inverter!

• All work must be carried out by a qualified electrician.

• The appliance is not to be used by children or persons with reduced physical, sensory, or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction.

• Children should be supervised to ensure that they do not play with the appliance.

CAUTION!

Danger of burn injuries due to hot enclosure parts!

• During operation, the upper lid of the enclosure and the enclosure body may become hot.

• Only touch the lower enclosure lid during operation.

CAUTION!

Possible damage to health as a result of the effects of radiation!

• Do not stay closer than 0.66 ft/20 cm to the inverter for any length of time.

WARNING!

• Do not operate the inverter when the device is running.

• Risk of electric shock!

• Authorized service personnel must disconnect the cables before attempting any maintenance or cleaning or working on any circuits connected to the box.

The symbols on the warning label provide the following information:

• The system must be disposed of at a proper facility for environmentally-safe recycling.

• The system should not be disposed of together with household waste.

• Wear protective glasses.

• Observe enclosed documentation.

• Keep the battery system away from open flames or ignition sources.

• Keep the battery system away from children.

• Danger of high voltages.

• Danger. Risk of electric shock.

Note: The serial number of B1 and B2 slave batteries must be equal.

The SOLARX POWER BMS PARALLEL BOX-II has the following features:

• Interacts with the inverter.

• Judges and controls the running state of the battery system based on interactive information.

• Performs BMS related control processing.

• Realizes corresponding fault identification and processing.

• Ensures the safe operation of the battery system.

• Secondary Protection by Hardware.

• IP55 Protection Level.

• Safety & Reliability.

• Small Occupied Area.

• Wall Mounting capability.

Ensure the installation location meets the following conditions:

• The building is designed to withstand earthquakes.

• The location is far from the sea (over 0.62 miles/997.79 meters) to avoid salt water and humidity.

• The floor is flat and level.

• There are no flammable or explosive materials within a minimum of 3 ft/0.91 m.

• The ambiance is shady and cool, away from heat and direct sunlight.

• The temperature and humidity remain at a constant level.

• There is minimal dust and dirt in the area.

• There are no corrosive gases present, including ammonia and acid vapor.

Note: When installing the battery for the first time, the manufacturing date between battery modules should not exceed 3 months.

The following tools are required for installation:

• Torque Screw Driver

• Phillips-Screw Driver

• Hexagon Wrench

• Phillips-Head Screw Driver

• Flat-Head Screw Driver

• Torque Wrench

• Tape Measure

• Drill

• Pencil or Marker

It is also mandatory for personnel to wear appropriate safety gear, including Insulated Gloves, Safety Goggles, and Safety Shoes.

Follow these steps to mount the SOLARX POWER BMS PARALLEL BOX-II on a wall:

Step 1: Fix the wall bracket on the wall

• Remove the bracket from the back of the box. Measure it and mark the position of the two holes on the wall.

• Drill holes at the marked positions to a depth of at least 3.15 inches/80.00 mm using a drill (ø 0.39 inch/10 mm).

• Insert the expansion screw sleeves into the holes, and then screw the wall bracket to the wall using a wrench (Torque: 1.2-1.5 N·m).

Step 2: Match the box with the wall bracket

• Hang the box over the wall bracket, move the box close to it and ensure it is securely matched on the wall bracket.

CAUTION! Ensure that the system is always exposed to ambient air as it is cooled by natural convection. If the system is entirely or partially covered or shielded, it may cause the system to stop operating.

To connect the power cables from the box to the inverter (BAT+ to BAT+; BAT- to BAT-), follow these steps:

Step 1. Strip the cable to 0.59 in/15 mm.

Step 2. Insert the stripped cable up to the stop into the connector. The negative cable goes into the DC plug(-) and the positive cable goes into the DC socket(+). Hold the housing on the screw connection.

Step 3. Press down the spring clamp until it clicks audibly into place. You should be able to see the fine wire strands in the chamber.

Step 4. Tighten the screw connection with a tightening torque of 2.0±0.2 N·m.

To connect the BMS communication cable (Box to Inverter: BMS to BMS):

The BMS communication cable is required for the BMS to communicate with the inverter for proper operation. The wire order is as follows:

The wire colors correspond to the sequence as follows: 1) Orange stripes on white, 2) Orange, 3) Green stripes on white, 4) Blue, 5) Blue stripes on white, 6) Green, 7) Brown stripes on white, 8) Brown.

To connect the SOLARX POWER BMS PARALLEL BOX-II to 2, 4, 6, or 8 battery packs, make the following connections from the box to the first battery module in each group:

• B1+/B2+ on the box connects to “+” on the battery module.

• B1-/B2- on the box connects to “XPLUG” on the battery module.

• RS485-1/RS485-2 on the box connects to “RS485 I” on the battery module.

Subsequent batteries in the group are connected in series. To form a complete circuit for the group, connect “-” and “YPLUG” with a series-connected cable on the right side of the last battery module in the group.

Note: If any ports are not used after wiring is completed, please remember to install the waterproof caps on those ports.

The DIP switch configures the communication between the battery module(s) and the inverter. A small flat-head screwdriver is needed for adjustment.

Configuration activated by inverter:

• 0: Matching a single battery group (group 1 or group 2).

• 1: Matching both battery groups (group 1 and group 2).

Caution: If the DIP switch is set to 1, the number of batteries in both groups must be the same.

Black-start Configuration (for off-grid applications with no other power supply):

• 4: Matching the Black Start mode for a single group (group 1 or group 2).

• 5: Matching the Black Start mode for both groups (group 1 and group 2).

Note: When powering on the box, it will start a self-test. If the buzzer beeps, it indicates a DIP configuration fault or communication failure. Check if the number of battery modules corresponds to the DIP configuration and if the RS485 communication cables are correctly connected. After checking, press the POWER button to power on, and press it again 10 seconds later.

After all battery modules are installed, follow these steps to start the SOLARX POWER BMS PARALLEL BOX-II:

1. Verify that the model number of each battery module is the same.

2. Configure the DIP switch to the corresponding number according to the number of battery module(s) installed.

3. Remove the cover board of the box.

4. Move the circuit breaker switch to the “ON” position.

5. Press the POWER button to start the box.

6. Reinstall the cover board on the box.

7. Turn on the inverter AC switch.

8. After starting the box, confirm that the waterproof cap is closed again.

NOTE: Frequently pressing the POWER button may cause a system error. Allow at least 10 seconds after pressing the POWER button before making another attempt.

The LED indicators on the front panel show the operating status. The capacity indicators (S2) show the state of charge (SOC), while the status lights (S1) indicate the BMS status.

Status of BMS (S1):

Capacity Indicators (SOC):

• When the battery module is neither charging nor discharging, the indicator lights are off.

• When the battery module is charging, a part of the blue LED flashes once every 5 seconds, and a part of the blue LED is on. For example, at SOC 60% while charging:

– The last two blue LED indicators are on.

– The last three blue LED indicators flash once every 5 seconds.

• When the battery module is discharging, the blue LED indicators flash once every 5 seconds. For example, at SOC 60% while discharging:

– The last three blue LED indicators flash once every 5 seconds.

To shut down the system, follow these steps:

1. Turn off the breaker between the inverter and the box.

2. Power off the BMS.

3. Turn off the system by moving the circuit breaker switch on the box to the OFF position.

4. Ensure that every indicator on the box is off.

5. Disconnect the cables.

Use the following table to troubleshoot warning messages reported by the SOLARX POWER BMS PARALLEL BOX-II.

Only a qualified person may perform maintenance. Follow these guidelines:

Storage and Recharging:

• If ambient temperature for storage is -4°F to 113°F (-20°C to 45°C), recharge batteries at least once every 3 months.

• If ambient temperature for storage is -4°F to 68°F (-20°C to 20°C), recharge batteries at least once every 6 months.

• If batteries have not been used for more than 9 months, they must be charged to at least 50% SOC each time.

Battery Installation and Replacement:

• For the first installation, the interval among manufacture dates of battery modules shall not exceed 3 months.

• If a battery is replaced, the SOC of the new battery must be consistent with the others, with a maximum difference between -5% and 5%.

• To increase battery system capacity, ensure the existing system’s SOC is about 40%. The new battery’s manufacture date shall not exceed 6 months; if it does, charge the new battery to around 40% before adding.

Periodic Maintenance Checklist:

1. Periodically check if the cooling fins on the rear are covered by dirt and clean them if necessary.

2. Every 6 months, check that the indicators and keys on the box are in a normal state and that the system display is normal.

3. Every 6 months, check that the input and output wires are not damaged or aged.

4. Every 12 months, check that the ground terminal and cable are securely connected and all terminals and ports are properly sealed.

5. Every 6 months, clean the box panels and check their security.