The spare output of the PRCM can be programmed as a high logic signal or a low logic signal for customer devices. Also, the spare output can be programmed as a serial data link for operating the relay driver module (RDM).
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| Illustration 1 | g00709866 |
| NUMERIC DISPLAY CODES AND CONNECTION CHART FOR THE PRCM | ||||
| Relay Code | Relay No. | Common | Normally Open Output | Normally Closed Output |
| P001 | K1 | RM-13 | RM-14 | - |
| P002 | K2 | RM-34 | RM-22 | - |
| P003 | K3 | RM-30 | RM-16 | RM-17 |
| P004 | K4 | RM-33 | RM-18 | RM-21 |
| P005 | K5 | RM-35 | RM-24 | - |
| P006 | K6 | RM-32 | RM-19 | RM-20 |
| P007 | K7 | RM-31 | RM-15 | - |
Test Step 1. CHECK THE STATUS OF THE DEVICE
Perform the following procedure in order to verify the cause of an unknown device.
- Check that the component is working properly.
Expected Result:
The component or the device is working properly.
Results:
- YES - The component or the device is working properly. Stop.
- NO - The component or the device is NOT working properly. Proceed to test step 2.
Test Step 2. VERIFY RELAY ACTIVATION.
Either the "K1" through "K7" symbol will be present on the lower display in order to show that the relay is activated. The contacts that are normally open will close. This will activate the device that is connected to the output contacts.
- View the lower display in order to verify that either the "K1" through "K7" is present on the display.
Expected Result:
The relay is activated or the relay is NOT activated.
Results:
- YES - One of the "K1" through "K7" symbols is active on the lower display. Proceed to test step 3.
- NO - The relay is not programmed to be on at this time. Check the programming. See Systems Operation, Input/Output Monitoring and Programming. Stop.
Test Step 3. VERIFY THE STATUS OF THE RELAY
- Use a multimeter in order to verify that the contacts are in the proper position.
Expected Result:
The relay contacts are in the proper position.
Results:
- YES - The relay contacts are in the proper position. The device or the component has failed. The wire from the relay to the component may have failed.
Repair: Check the wire from the relay to the component. Repair the device/component or replace the device/component.
Stop.
- NO - The relay has failed.
Repair: Replace the relay board.
Stop.