GE L30 Instruction Manual page 517

CHAPTER 7: COMMANDS AND TARGETS
(7.25), Module Failure 31 indicates the limited functionality. If your application requires the new functionality, then new
process card hardware is required and otherwise you can continue using the existing hardware. To know the revision
of your hardware, contact the factory.
MAINTENANCE ALERT:
Replace Battery
• Latched target message: Yes.
• Description of problem: The battery is weak or not functioning. It powers the real time clock. This message displays as
Battery Fail in the event records. When the battery weakness reaches a critical level, the message displays persistently
on the front panel and no front panel key navigation is possible.
• How often the test is performed: The battery is monitored every five seconds. The error message displays after 60
seconds if the problem persists
• What to do: Replace the battery as outlined in the Maintenance chapter.
MAINTENANCE ALERT:
Direct I/O Ring Break
• Latched target message: No.
• Description of problem: Direct input and output settings are configured for a ring, but the connection is not in a ring.
• How often the test is performed: Every second
• What to do: Check direct input and output configuration and wiring.
MAINTENANCE ALERT:
Bad IRIG-B Signal
• Latched target message: No.
• Description of problem: A bad IRIG-B input signal has been detected.
• How often the test is performed: Monitored whenever an IRIG-B signal is received.
• What to do: Ensure the following:
– The IRIG-B cable is properly connected.
– Proper cable functionality (that is, check for physical damage or perform a continuity test).
– The IRIG-B receiver is functioning.
– Check the input signal level (it can be less than specification).
If none of these apply, then contact the factory.
MAINTENANCE ALERT:
**Bad PTP Signal**
• Latched target message: No.
• Description of problem: No PTP enabled port has good PTP signal input.
• How often the test is performed: Activated when no acceptable signal is being received.
• What to do: Ensure the following:
– The Ethernet cable(s) are properly connected.
– At least one PTP grandmaster-capable clock is functioning.
– If strict PP is enabled, that entire network is PP compliant.
– The network is delivering PTP messages to the relay.
MAINTENANCE ALERT:
SNTP Failure
• Latched target message: No.
L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL
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TARGETS MENU
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