ComStream CM601, Инструкция по установке и эксплуатации

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Fault Handling, Troubleshooting, and Maintenance 8-9
To illuminate the fault LEDs, the following commands would be issued from the
remote terminal or using the front panel terminal emulator:
Yellow fault LED – issue FLO 264447
Red fault LED – issue
STO 264447
To set these faults to affect the status relay on the rear panel, issue
FO 264447
.
Procedure to Specify Status Relay Overlay Mask Bits
To specify status relay overlay mask bits:
1. Identify the fault conditions that will affect the status relay.
2. Use the ST command to identify the bits in the current fault status register that
correspond to the selected faults.
3. Use the FO command to set the corresponding overlay mask bits to 1 for the
selected faults. The overlay mask bits for all nonselected faults is set to 0.
Both the current fault status register and the status relay are real-time indicators. If
a fault condition exists, it will be indicated. If no fault exists or it vanishes, the
status relay will report a normal condition.
Procedure to Specify the Polarity of a Relay Sense Pin
To specify a relay sense pin fault condition:
1. Identify the status relays to be monitored by the CM601.
2. For each selected relay, wire one side of the relay to an M&C relay sense pin
and the other side of the relay to an M&C relay sense ground pin.
3. Use the FRX command to define the correct polarity of the relay sense pin for
a fault condition.
4. Use the ST or VS command to monitor the real-time faults indicated by the
status relays from the other equipment.
5. Use the FL, VF, or VFT command to view the faults logged while monitoring
the status relays from the other equipment.