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What are the installation safety precautions for the WESTERMO SDW-550B?

Before installation, read the manual completely and gather all information on the unit. Make sure you understand it fully and check that your application does not exceed the safe operating specifications for the WESTERMO SDW-550B.

The WESTERMO SDW-550B should only be installed by qualified personnel.

The WESTERMO SDW-550B should be built-in to an apparatus cabinet, or similar, where access is restricted to service personnel only.

The power supply wiring must be sufficiently fused, and if necessary it must be possible to disconnect manually from the power supply. Ensure compliance to national installation regulations.

The WESTERMO SDW-550B uses convection cooling. To avoid obstructing the air flow around the unit, follow the spacing recommendations.


What safety precautions should be taken before mounting, using, or removing the WESTERMO SDW-550B?

Prevent access to hazardous voltage by disconnecting the unit from power supply.

Warning! Do not open connected WESTERMO SDW-550B unit. Hazardous voltage may occur within this unit when connected to power supply.


What is the precaution regarding the fibre optical port on the WESTERMO SDW-550B as a Class 1 Laser Product?

Do not look directly into the fibre optical port or any connected fibre although this unit is designed to meet the Class 1 Laser regulations.


What are the care recommendations for the WESTERMO SDW-550B to maintain full operation and fulfil warranty obligations?

Follow the care recommendations below to maintain full operation of the WESTERMO SDW-550B and to fulfil the warranty obligations.

This unit must not be operating with removed covers or lids.

Do not attempt to disassemble the unit. There are no user serviceable parts inside.

Do not drop, knock or shake the unit, rough handling above the specification may cause damage to internal circuit boards.

Do not use harsh chemicals, cleaning solvents or strong detergents to clean the unit.

Do not paint the unit. Paint can clog the unit and prevent proper operation.

Do not expose the unit to any kind of liquids (rain, beverages, etc). The unit is not waterproof. Keep the unit within the specified humidity levels.

Do not use or store the unit in dusty, dirty areas, connectors as well as other mechanical part may be damaged.

If the unit is not working properly, contact the place of purchase, nearest Westermo distributor office or Westermo Tech support.

Fibre connectors are supplied with plugs to avoid contamination inside the optical port. As long as no optical fibre is mounted on the connector, e.g. for storage, service or transportation, should the plug be applied.


What is the proper handling procedure for fibre optic equipment connected to the WESTERMO SDW-550B?

Fibre optic equipment needs special treatment. It is very sensitive to dust and dirt.

If the fibre will be disconnected from the modem the protective hood on the transmitter/receiver must be connected.

The protective hood must be kept on during transportation.

The fibre optic cable must also be handle the same way.

If this recommendation is not followed it can jeopardise the warranty.


What are the recommended cleaning fluids for the optical connectors on the WESTERMO SDW-550B in case of contamination?

In the event of contamination, the optical connectors should be cleaned by the use of forced nitrogen and some kind of cleaning stick.

Recommended cleaning fluids for the WESTERMO SDW-550B are:

  • Methyl-, ethyl-, isopropyl- or isobutyl-alcohol
  • Hexane
  • Naphtha

Is maintenance required for the WESTERMO SDW-550B?

No maintenance is required, as long as the unit is used as intended within the specified conditions for the WESTERMO SDW-550B.


What does the product disposal symbol on the WESTERMO SDW-550B mean?

This symbol means that the product shall not be treated as unsorted municipal waste when disposing of it. It needs to be handed over to an applicable collection point for recycling electrical and electronic equipment.

By ensuring this product is disposed of correctly, you will help to reduce hazardous substances and prevent potential negative consequences to both environment and human health, which could be caused by inappropriate disposal.


What is the configuration setting for the WESTERMO SDW-550B regarding auto-configuration?

The WESTERMO SDW-550B is auto configured (auto-negotiation) or manually setting of speed and duplex of individual TX port, by DIP-switches.


How can the port mirror function be set on the WESTERMO SDW-550B?

The port mirror function is possible to set with DIP-switch on the WESTERMO SDW-550B. With the port mirror function active the switch will copy all outgoing traffic to port 1. This can be used to monitor all traffic going out from the switch. Packets may be discarded if the total throughput exceeds the port speed of port 1.


What are the features of the WESTERMO SDW-550B?

Features of the WESTERMO SDW-550B include:

  • TX shields individually isolated
  • Wide DC power range 12 – 48 VDC
  • Wide temperature range
  • Automatic MDI/MDI-X crossover
  • LED indicators for Power, Speed, Duplex, Link and Traffic
  • Port monitoring
  • 35 mm DIN rail mounting
  • Enable or disable of flow control

What are the examples of applications for the WESTERMO SDW-550B?

Examples of applications for the WESTERMO SDW-550B are:

  • 5-port switch
  • Ethernet isolator, for STP networks

What is the required operating voltage for the Power Interface of the WESTERMO SDW-550B?

The power interface to all other interfaces on the WESTERMO SDW-550B has an isolation rating of 2.8 kV DC 2.0 kV RMS @ 50 Hz and 60 s duration.


What is the required operating voltage for the TX signal Interface of the WESTERMO SDW-550B?

The TX signal Interface to all other interfaces on the WESTERMO SDW-550B has an isolation rating of 2.1 kV DC 1.5 kV RMS @ 50 Hz and 60 s duration.


What is the required operating voltage for the TX shield Interface of the WESTERMO SDW-550B?

The TX shield Interface to all other interfaces on the WESTERMO SDW-550B has an isolation rating of 1.5 kV DC 1.0 kV RMS @ 50 Hz and 60 s duration.


What is the operating temperature range for the WESTERMO SDW-550B?

The operating temperature for the WESTERMO SDW-550B is -25 to +70°C.


What is the temperature range for storage and transportation of the WESTERMO SDW-550B?

The temperature range for storage and transportation of the WESTERMO SDW-550B is -25 to +70°C.


What are the relative humidity operating conditions for the WESTERMO SDW-550B?

The relative humidity operating condition for the WESTERMO SDW-550B is 5 to 95% (non-condensing).


What are the relative humidity conditions for storage and transportation of the WESTERMO SDW-550B?

The relative humidity conditions for storage and transportation of the WESTERMO SDW-550B is 5 to 95% (condensation allowed outside packaging).


What is the maximum altitude for operating the WESTERMO SDW-550B?

The maximum altitude for operating the WESTERMO SDW-550B is 2000 m/70 kPa.


What are the dimensions and weight of the WESTERMO SDW-550B?

The mechanical specifications for the WESTERMO SDW-550B are:

Dimension (W x H x D) 35 x 121 x 119 mm
Weight 0.2 kg

How is the WESTERMO SDW-550B mounted and what is its degree of protection?

The mounting for the WESTERMO SDW-550B is DIN-rail.

The degree of protection for the WESTERMO SDW-550B is IP21.


What settings are available via DIP-switches for the TX ports on the WESTERMO SDW-550B?

DIP-switches are used to configure the speed and duplex of individual TX ports on the WESTERMO SDW-550B. Configurations include:

  • Auto-negotiation and auto MDI/MDI-X disabled
  • Auto-negotiation and auto MDI/MDI-X enabled
  • 10 Mbit/s speed selected
  • 100 Mbit/s speed selected
  • Half duplex selected
  • Full duplex selected

What should be observed when configuring DIP-switches on the WESTERMO SDW-550B?

To be observed when the DIP-switches will be configured on the WESTERMO SDW-550B:

  • Speed and duplex setting only valid when auto-negotiation is disabled.
  • When monitoring selected all outgoing packets from the switch is also copied to the port 1.
  • Speed and duplex switch settings are ignored for FX ports.
  • If auto-negotiation and auto MDI/MDI-X disabled all TX ports support MDI-X configuration.

What are the fibre optic power budget specifications for the WESTERMO SDW-550B (Article number 3644-0015)?

The WESTERMO SDW-550B (Model SDW-550B) has 5 ports of 10/100Base-T/TX.

The fibre optic power budget specifications for models with multimode (MM-xx2) fibre type are:

Model MM-xx2
Transmitted wavelength 1310 nm
Min. output power, transmitter -19 dBm
Max. output power, transmitter -12 dBm
Input sensitivity, receiver -31 dBm
Min. power budget 12 dBm
Max. power budget 19 dBm
Recommended fibre cable and core / cladding diameter 50/125 62.5/125

What are the fibre optic power budget specifications for WESTERMO SDW-550B models using Singlemode SM-SC15 fibre type?

The fibre optic power budget specifications for WESTERMO SDW-550B models using Singlemode SM-SC15 fibre type are:

Model Singlemode SM-SC15
Transmitted wavelength 1310 nm
Min. output power, transmitter -15 dBm
Max. output power, transmitter -8 dBm
Input sensitivity, receiver -34 dBm
Min. power budget 19 dBm
Max. power budget 26 dBm
Recommended fibre cable and core / cladding diameter 9/125 10/125

What are the fibre optic power budget specifications for WESTERMO SDW-550B models using Singlemode SM-LC15 fibre type?

The fibre optic power budget specifications for WESTERMO SDW-550B models using Singlemode SM-LC15 fibre type are:

Model Singlemode SM-LC15
Transmitted wavelength 1310 nm
Min. output power, transmitter -15 dBm
Max. output power, transmitter -8 dBm
Input sensitivity, receiver -31 dBm
Min. power budget 16 dBm
Max. power budget 23 dBm
Recommended fibre cable and core / cladding diameter 9/125 10/125

What are the fibre optic power budget specifications for WESTERMO SDW-550B models using Singlemode SM-LC40 fibre type?

The fibre optic power budget specifications for WESTERMO SDW-550B models using Singlemode SM-LC40 fibre type are:

Model Singlemode SM-LC40
Transmitted wavelength 1310 nm
Min. output power, transmitter -5 dBm
Max. output power, transmitter 0 dBm
Input sensitivity, receiver -34 dBm
Min. power budget 29 dBm
Max. power budget 34 dBm
Recommended fibre cable and core / cladding diameter 9/125 10/125

What is the normal attenuation for connectors and splices in the WESTERMO SDW-550B?

The normal attenuation in connectors or splices for the WESTERMO SDW-550B is:

Type Normal attenuation
Connector 0.2 – 0.4 dBm
Fusion splice 0.1 dBm
Mechanical splice 0.2 dBm

What are the power supply specifications for the WESTERMO SDW-550B series?

The power specifications for the WESTERMO SDW-500 series, which includes the WESTERMO SDW-550B, are:

Rated voltage 12-48 VDC, polarity protected
Operating voltage 9.6 – 57.6 VDC
Rated current (@12VDC power input) SDW-550: 320 mA

The rated current for the WESTERMO SDW-550B (Model SDW-550) at 12VDC power input is 320 mA.

The rated frequency is DC.

Connection is via Detachable screw terminal, with connector size 0.2 – 2.5 mm² (AWG 24-12).


What are the electrical specifications for the Ethernet TX ports on the WESTERMO SDW-550B?

The electrical specifications for Ethernet TX on the WESTERMO SDW-550B are based on IEEE std 802.3. 2000 edition:

Data rate 10 Mbit/s or 100 Mbit/s, manual or auto
Duplex Full or half, manual or auto
Connection SC, ST or LC
Circuit type Optical
Transmission range 100 m

What are the electrical specifications for the Ethernet FX ports on the WESTERMO SDW-550B?

The electrical specifications for Ethernet FX on the WESTERMO SDW-550B are based on IEEE std 802.3. 2000 edition:

Data rate 10 Mbit/s or 100 Mbit/s, manual or auto
Duplex Full or half, manual or auto
Connection SC, ST or LC
Circuit type Optical
Transmission range 100 m

How are the LED indicators described for the WESTERMO SDW-550B?

The PWR LED indicates the internal power status. When ON, the internal power is OK. When Slow flash, initialisation is progressing. When Fast flash, there is an initialisation error.

The LINK LED indicates the Link status of every port. When OFF, there is No Ethernet link. When ON, there is a Good Ethernet link. When Flash, Ethernet data is transmitted or received (traffic indication).

The SPD LED (TX only) indicates the speed: OFF for 10 Mbit/s and ON for 100 Mbit/s.

The DPX LED (TX only) indicates the duplex setting: OFF for Half duplex and ON for Full duplex.


How can I mount the WESTERMO SDW-550B unit?

The WESTERMO SDW-550B unit should be mounted on a 35 mm DIN-rail which is horizontally mounted on a wall or cabinet backplate.

To avoid obstructing the airflow around the unit due to convection cooling, use the following spacing rules: Recommended spacing 25 mm (1.0 inch) above/below and 10 mm (0.4 inches) left/right the unit.

Snap on mounting is performed as shown in the figure.


How do I remove the WESTERMO SDW-550B unit from the DIN-rail?

To remove the WESTERMO SDW-550B unit, press down the black support at the back of the unit.


What are the DIP switch settings for Port 1 on the WESTERMO SDW-550B?

DIP switch S1 settings for Port 1 on the WESTERMO SDW-550B determine the configuration:

S1 Switches 1-8 Configuration
All OFF Auto-negotiation and auto MDI/MDI-X disabled
All ON Auto-negotiation and auto MDI/MDI-X enabled
S1 Switch 1 ON, others OFF 10 Mbit/s speed selected
S1 Switch 2 ON, others OFF 100 Mbit/s speed selected
S1 Switch 3 ON, others OFF Half duplex selected
S1 Switches 3 & 4 ON, others OFF Full duplex selected

Note: Speed and duplex settings are ignored for FX ports.


What are the DIP switch settings for Port 2 on the WESTERMO SDW-550B?

DIP switch S1 settings for Port 2 on the WESTERMO SDW-550B determine the configuration:

S1 Switches 1-8 Configuration
All OFF Auto-negotiation and auto MDI/MDI-X disabled
All ON Auto-negotiation and auto MDI/MDI-X enabled
S1 Switch 1 ON, others OFF 10 Mbit/s speed selected
S1 Switch 2 ON, others OFF 100 Mbit/s speed selected
S1 Switch 3 ON, others OFF Half duplex selected
S1 Switches 3 & 4 ON, others OFF Full duplex selected

Note: Speed and duplex settings are ignored for FX ports.


What are the DIP switch settings for Port 3 on the WESTERMO SDW-550B?

DIP switch S1 settings for Port 3 on the WESTERMO SDW-550B determine the configuration:

S1 Switches 1-8 Configuration
All OFF Auto-negotiation and auto MDI/MDI-X disabled
All ON Auto-negotiation and auto MDI/MDI-X enabled
S1 Switch 1 ON, others OFF 10 Mbit/s speed selected
S1 Switch 2 ON, others OFF 100 Mbit/s speed selected
S1 Switch 3 ON, others OFF Half duplex selected
S1 Switches 3 & 4 ON, others OFF Full duplex selected

Note: Speed and duplex settings are ignored for FX ports.


What are the Port mirroring settings controlled by DIP switches on the WESTERMO SDW-550B?

Port mirroring settings are controlled by DIP switch S2 on the WESTERMO SDW-550B:

S2 Switches 1-8 Configuration
All OFF No monitoring selected
S2 Switch 7 ON, others OFF Monitoring selected

What are the Flow control settings controlled by DIP switches on the WESTERMO SDW-550B?

Flow control settings are controlled by DIP switch S3 on the WESTERMO SDW-550B:

S3 Switches 1-4 Configuration
S3 Switch 1 ON, others OFF Flow control selected
All OFF No flow control selected

What are the factory settings for the DIP switches on the WESTERMO SDW-550B?

The factory settings for the DIP switches on the WESTERMO SDW-550B are:

  • S1: All switches OFF
  • S2: All switches OFF
  • S3: All switches OFF

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