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High voltage may be present. Work on this equipment must be performed by authorized trained personnel. Failure to disconnect the power source before performing maintenance or removing modules exposes personnel to electrical potential. Bodily contact with electrical potential will cause serious personal injury or death. |
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| Illustration 1 | g01944459 |
Example of an isolated communication card. | |
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Incorrect power connections may result in serious personal injury or death. Isolate all power sources for the communication card before making connections on the communication card. Use lock out and tag out procedures as required. If a SELV source is used, ensure that the communications card can be isolated from the upstream source. Never connect Safety Extra Low Voltage (SELV) and non-SELV circuits to the different outputs of the same card. |
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| Illustration 2 | g02143272 |
Connection of the relay communication card | |
- Remove the cover (55) that is secured by the screws (59) .
- Run the communication cables through the holes (56) that are provided.
- Connect the conductors to the input (58) and output (57) terminal blocks.
- Reinstall the previously removed cover and reinstall the screws (53) .
- Tighten the screws (59) to lock the cables.
- Indicate the locations of the power sources on the labels.
- Insert the card in the slot.
- Secure the card with two screws (54) .
Characteristics of the Contacts on the Relay Communications Card
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| Illustration 3 | g01944449 |
Characteristics of the output contacts include the following:
- The permissible voltage is 250 vac, 30 vdc.
- The permissible current is two amps.
- The cable is 4 x 0.93 mm2, Ø 6.6 ± 0.3 mm.
Characteristics of the input contacts include the following:
- The switched voltage is 5 vdc.
- The consumption is 10 mA.
- The cable is 4 x 0.34 mm2, Ø 5 ± 0.5 mm.