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What safety precautions should be followed before installation of the WESTERMO SDW-541-MM-LC2?
Before installation of the WESTERMO SDW-541-MM-LC2:
Read this manual completely and gather all information on the unit. Make sure that you understand it fully. Check that your application does not exceed the safe operating specifications for this unit.
This unit should only be installed by qualified personnel.
This unit 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.
This unit uses convection cooling. To avoid obstructing the air flow around the unit, follow the spacing recommendations (see Installation section).
What safety precautions should be followed before mounting, using or removing the WESTERMO SDW-541-MM-LC2?
Before mounting, using or removing the WESTERMO SDW-541-MM-LC2:
Prevent access to hazardous voltage by disconnecting the unit from power supply.
Warning! Do not open connected unit. Hazardous voltage may occur within this unit when connected to power supply.
What care recommendations should be followed for the WESTERMO SDW-541-MM-LC2?
Follow the care recommendations below to maintain full operation of unit 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.
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 special treatment is needed for fiber optic handling with the WESTERMO SDW-541-MM-LC2?
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 not will be followed it can jeopardise the warranty.
How should optical connectors of the WESTERMO SDW-541-MM-LC2 be cleaned?
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:
- Methyl-, ethyl-, isopropyl- or isobutyl-alcohol
- Hexane
- Naphtha
What maintenance is required for the WESTERMO SDW-541-MM-LC2?
No maintenance is required, as long as the unit is used as intended within the specified conditions.
What are the environmental conditions for the WESTERMO SDW-541-MM-LC2 regarding temperature?
The environmental temperature conditions for the WESTERMO SDW-541-MM-LC2 are:
| Temperature, operating | -25 to +65°C (SDW-541) |
| Temperature, storage and transportation | -25 to +70°C |
What are the environmental conditions for the WESTERMO SDW-541-MM-LC2 regarding relative humidity and altitude?
The environmental conditions for the WESTERMO SDW-541-MM-LC2 are:
| Relative humidity, operating | 5 to 95% (non-condensing) |
| Relative humidity, storage and transportation | 5 to 95% (condensation allowed outside packaging) |
| Altitude, operating | 2000 m/70 kPa |
What are the mechanical specifications of the WESTERMO SDW-541-MM-LC2?
The mechanical specifications for the WESTERMO SDW-541-MM-LC2 are:
| Dimension (W x H x D) | 35 x 121 x 119 mm |
| Weight | 0.2 kg |
| Mounting | DIN-rail |
| Degree of protection | IP21 |
What are the configuration capabilities of the WESTERMO SDW-541-MM-LC2?
The WESTERMO SDW-541-MM-LC2 is Auto configured (auto-negotiation) or allows manually setting of speed and duplex of individual TX port, by DIP-switches.
Port mirror function is possible to set with DIP-switch. 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 Multimode Fibre optic power budget specifications for the WESTERMO SDW-541-MM-LC2?
The Multimode Fibre optic power budget specifications for the WESTERMO SDW-541-MM-LC2 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 normal attenuation values for connectors and splices in the WESTERMO SDW-541-MM-LC2 setup?
Attenuation in connectors / splices:
| Type | Normal attenuation |
| Connector | 0.2 – 0.4 dBm |
| Fusion splice | 0.1 dBm |
| Mechanical splice | 0.2 dBm |
What are the features of the WESTERMO SDW-541-MM-LC2?
Features of the WESTERMO SDW-541-MM-LC2:
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-541-MM-LC2?
Example of applications for the WESTERMO SDW-541-MM-LC2 are:
5-port switch
Ethernet isolator, for STP networks
What are the power specifications for the WESTERMO SDW-541-MM-LC2?
Power specifications for the WESTERMO SDW-541-MM-LC2:
| Rated voltage | 12 – 48 VDC, polarity protected |
| Operating voltage | 9.6 – 57.6 VDC |
| Rated current (@12VDC power input) | 350 mA |
| Rated frequency | DC |
| Connection | Detachable screw terminal |
| Connector size | 0.2 – 2.5 mm² (AWG 24-12) |
What are the Ethernet TX interface specifications for the WESTERMO SDW-541-MM-LC2?
Ethernet TX interface specifications for the WESTERMO SDW-541-MM-LC2:
| Electrical specification | 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 Ethernet FX interface specifications for the WESTERMO SDW-541-MM-LC2?
Ethernet FX interface specifications for the WESTERMO SDW-541-MM-LC2:
| Electrical specification | 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 is the power connection configured on the WESTERMO SDW-541-MM-LC2?
The WESTERMO SDW-541-MM-LC2 supports redundant power connection. The positive inputs are +VA and +VB, and the negative input for both supplies is COM. The power is drawn from the input with the highest voltage.
3-pos screw terminal connections:
| 3-pos screw terminal | Description | Power |
|---|---|---|
| 1 | COM | 0 V |
| 2 | +VA | A: 9.6 – 57.6 VDC |
| 3 | +VB | B: 9.6 – 57.6 VDC |
What are the contact details for the Ethernet TX connection (RJ-45) on the WESTERMO SDW-541-MM-LC2?
Ethernet TX connection (RJ-45 connector), automatic MDI/MDI-X crossover.
| Contact | Signal Name | Direction | Description/Remark |
|---|---|---|---|
| 1 | TD+ | In/Out | Transmitted/Received data |
| 2 | TD- | In/Out | Transmitted/Received data |
| 3 | RD+ | In/Out | Transmitted/Received data |
| 4 | – | – | – |
| 5 | – | – | – |
| 6 | RD- | In/Out | Transmitted/Received data |
| 7 | – | – | – |
| 8 | – | – | – |
| Shield | – | – | HF-connected |
CAT 5 cable is recommended.
Unshielded (UTP) or shielded (STP) connector might be used.
What is the specification for the FX LC Multi- or single mode connection on the WESTERMO SDW-541-MM-LC2?
FX LC Multi- or single mode (optional) Ethernet FX connection.
1300 nm singlemode fibre transceiver with LC-connector.
The dust protection plug shall be mounted when no fibre is connected.
What do the LED indicators on the WESTERMO SDW-541-MM-LC2 signify?
At power on the PWR flashes during initialising.
Indicators (LED):
- Power (PWR)
- Link (LINK) of every port
- Speed (SPD) and duplex (DPX) of TX ports
| LED | Status | Indication of |
|---|---|---|
| PWR | ON | Internal power, initialising OK |
| Slow flash | Initialisation progressing | |
| Fast flash | Initialisation error | |
| LINK | OFF | No Ethernet link |
| ON | Good Ethernet link | |
| Flash | Ethernet data is transmitted or received, traffic indication | |
| SPD (TX only) | OFF | 10 Mbit/s |
| ON | 100 Mbit/s | |
| DPX (TX only) | OFF | Half duplex |
| ON | Full duplex |
What is the procedure and important notes for configuring the WESTERMO SDW-541-MM-LC2 using DIP switches?
DIP-switches are accessible under the lid on top of the unit. DIP-switches are used to configure the unit.
When configuration via DIP-switches, the settings of DIP-switches configure the unit only after a reboot (power off/on).
To be observed when the DIP-switches will be configured:
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 DIP switch settings for Port 1 of the WESTERMO SDW-541-MM-LC2?
Port 1 settings (Switches S1):
Auto-negotiation and auto MDI/MDI-X disabled: S1 – Switch 1 OFF
Auto-negotiation and auto MDI/MDI-X enabled: S1 – Switch 1 ON
10 Mbit/s speed selected: S1 – Switch 2 OFF
100 Mbit/s speed selected: S1 – Switch 2 ON
Half duplex selected: S1 – Switch 3 OFF
Full duplex selected: S1 – Switch 3 ON
What are the DIP switch settings for Port 2 of the WESTERMO SDW-541-MM-LC2?
Port 2 settings (Switches S1):
Auto-negotiation and auto MDI/MDI-X disabled: S1 – Switch 4 OFF
Auto-negotiation and auto MDI/MDI-X enabled: S1 – Switch 4 ON
10 Mbit/s speed selected: S1 – Switch 5 OFF
100 Mbit/s speed selected: S1 – Switch 5 ON
Half duplex selected: S1 – Switch 6 OFF
Full duplex selected: S1 – Switch 6 ON
What are the DIP switch settings for Port 3 of the WESTERMO SDW-541-MM-LC2?
Port 3 settings (Switches S1 and S2):
Auto-negotiation and auto MDI/MDI-X disabled: S1 – Switch 7 OFF
Auto-negotiation and auto MDI/MDI-X enabled: S1 – Switch 7 ON
10 Mbit/s speed selected: S1 – Switch 8 OFF
100 Mbit/s speed selected: S1 – Switch 8 ON
Half duplex selected: S2 – Switch 1 OFF
Full duplex selected: S2 – Switch 1 ON
What are the DIP switch settings for Port 4 of the WESTERMO SDW-541-MM-LC2?
Port 4 settings* (Switches S2):
Auto-negotiation and auto MDI/MDI-X disabled: S2 – Switch 2 OFF
Auto-negotiation and auto MDI/MDI-X enabled: S2 – Switch 2 ON
10 Mbit/s speed selected: S2 – Switch 3 OFF
100 Mbit/s speed selected: S2 – Switch 3 ON
Half duplex selected: S2 – Switch 4 OFF
Full duplex selected: S2 – Switch 4 ON
* Setting of port 4 is only possible when using SDW-541.
These settings are ignored when using SDW-532.
What are the DIP switch settings for Port mirroring on the WESTERMO SDW-541-MM-LC2?
Port mirroring settings (Switches S2):
No monitoring selected: S2 – Switch 5 OFF
Monitoring selected: S2 – Switch 5 ON
What are the DIP switch Factory settings for the WESTERMO SDW-541-MM-LC2?
Factory settings:
S1: Switches 1, 2, 3, 4, 5, 6, 7, 8 are ON.
S2: Switches 1, 2, 3, 4, 5 are ON.
How should the WESTERMO SDW-541-MM-LC2 be mounted?
This unit should be mounted on 35 mm DIN-rail which is horizontally mounted on a wall or cabinet backplate.
This unit uses convection cooling. To avoid obstructing the airflow around the unit, 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, see figure.
How should the WESTERMO SDW-541-MM-LC2 be removed?
Press down the black support at the back of the unit, see figure.
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