GE Industrial Solutions Entellisys 4.0 System User Manual - Manual (Page 108)

Multipoint functions 108
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Figure 7-4 Bus differential alarms setup
7.1.2 Troubleshooting
Bus Differential Setting Change Rejected events are observed in the Sequence of Events log
•
Verify that the pickup setting is within the valid range. Valid range is from “Zone Minimum
Pickup” to 22,000 Amps. (See
Setting Bus Differential pickups/delays on page 106 .)
Frequent suspended/resumed events are seen
•
Verify that both CPUs are operating with the hardware clock. This can be done from the
System Health screen. The Synchronization hardware OK indicator lights should be green for
both CPUs.
7.1.3 Events generated by the Bus Differential Relay
To view a table of the events generated by the Bus Differential Relay, see Alarms and events
on page 213 .
7.1.4 Alarms generated by the Bus Differential Relay
To view a table of the alarms generated by the Bus Differential Relay, see Alarms and events
on page 213 .