CHAPTER 7: COMMANDS AND TARGETS TARGETS MENU
L90 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 7-9
7
• Latched target message: Yes.
• Description of problem: Module hardware failure detected.
• How often the test is performed: Module dependent.
• What to do: Extract a Service Report through UR Setup software. Contact technical support and supply details of the
failure code on the display.
7.2.2.3 Minor self-test error messages
Most of the minor self-test errors can be disabled. See the settings in the User-programmable Self-tests section in chapter
5.
• Latched target message: Yes.
• Description of problem: Internal process disruption detected.
• How often the test is performed: Module dependent.
• What to do: Extract a Service Report through UR Setup software. Contact technical support and supply details of the
failure code on the display.
• 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.
• 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.
• 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.
DIAGNOSTIC ALARM:
with 2nd line detail
MAINTENANCE ALERT:
Replace Battery
MAINTENANCE ALERT:
Direct I/O Ring Break
MAINTENANCE ALERT:
Bad IRIG-B Signal
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