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6.8 Communication Failure Monitoring
If the system detects a loss of data on the communication link the relay will change state and
will remain in the abnormal state until communications are functioning correctly
6.9 Power Failure Monitoring
If the 24VDC logic power fed to the annunciator is lost or the internal logic supply protection
fuse has blown the relay will change state and will remain in the abnormal state until power has
been restored.
6.10 Card Fault Monitoring
If any of the cards within the system are not functioning correctly the relay will change state
and will remain in the abnormal state until the card functions correctly.
6.11 Ground Fault Monitoring
If the optional ground fault monitoring card is fitted the common relay will change state
whenever a ground fault is detected and will remain in the abnormal state until the ground fault
has been cleared.
6.12 LED Failure Monitoring
If any window suffers a total failure of the LED assemblies the common relay will change state
and will remain in the abnormal state until illumination is restored. (Please note:- The system
checks for LED failure on an hourly basis)
6.13 GPS Monitoring
On systems supplied with optional time stamping and GPS time sync. the common relay will
activate if the GPS time sync. is not available.
6.14 Printer Fault Monitoring
On systems supplied with optional time stamping and online printing of alarms the common
relay will change state when any printer errors occur and will remain in the abnormal state until
the printer error has been resolved.
6.15 Real Time Clock Fault Monitoring
The common relay will change state if any faults are detected in the RTC and will remain in the
abnormal state until the RTC returns to normal.
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