GE Industrial Solutions Entellisys 4.0 System User Manual - Manual (Page 251)

Alarms and events description and system troubleshooting guide 251
A
Protection Suspended Zone 1…4
Bus Diff Bus differential (trip and alarm only) for zone
1…4 has been suspended Examine Sequence of Events for cause. It can
be any one of the following:
•
Current on one or more phases exceeded
10X (overcurrent pickup/trip event)
• Messenger at a breaker in the zone is not
communicating (Caution CPU Not Rcv
From Messngr)
• Messenger at a breaker in the zone has
been decommissioned (Attention
Messngr Decommssned Msg Proto Ver,
Attention Messngr Decommssned Dupe
IDs Seqs, or Attention Messngr
Decommssned Dupe Ids)
•
A Compartment ID button at a breaker in
the zone has been misconfigured
•
At least one of the breakers in the zone
has been put into test mode (Test Mode
Initiated from Test Kit)
Protection Resumed Zone 1…4
Bus Diff Bus differential (trip and alarm only) for zone
1…4 has resumed
Invalid BusDiff Zone1…4 Set1
Pkup Chng Rejctd Pickup setting 1 for bus differential for zone
1…4 is too low, change is rejected Set pickup value above the minimum allowed
(20% of the smallest CT rating in the zone);
CPU sets value to minimum in this case.
Invalid BDiff Zone1…4 Set1 Alm
Pkup Chng Rejctd Pickup setting 1 for alarm only bus
differential for zone 1…4 is too low, change is
rejected Set pickup value above the minimum allowed
(20% of the smallest CT rating in the zone);
CPU sets value to minimum in this case.
Invalid BusDiff Zone1…4 Set2
Pkup Chng Rejctd Pickup setting 2 for bus differential for zone
1…4 is too low, change is rejected Set pickup value above the minimum allowed
(20% of the smallest CT rating in the zone);
CPU sets value to minimum in this case.
Invalid BDiff Zone1…4 Set2 Alm
Pkup Chng Rejctd Pickup setting 2 for alarm only bus
differential for zone 1…4 is too low, change is
rejected Set pickup value above the minimum allowed
(20% of the smallest CT rating in the zone);
CPU sets value to minimum in this case.
Invalid BusDiff Zone1…4 Set1
Pkup Min Used Pickup setting 1 for bus differential for zone
1…4 has been set to the minimum allowable
(current setting is too low) Check pickup setting for BD zone. Value can
be set higher if desired.
Invalid BDiff Zone1…4 Set1 Alm
Pkup Min Used Pickup setting 1 for alarm only bus
differential for zone 1…4 has been set to the
minimum allowable (current setting is too
low) Check pickup setting for BD zone. Value can
be set higher if desired.
Invalid BusDiff Zone1…4 Set2
Pkup Min Used Pickup setting 2 for bus differential for zone
1…4 has been set to the minimum allowable
(current setting is too low) Check pickup setting for BD zone. Value can
be set higher if desired.
Invalid BDiff Zone1…4 Set2 Alm
Pkup Min Used Pickup setting 2 for alarm only bus
differential for zone 1…4 has been set to the
minimum allowable (current setting is too
low) Check pickup setting for BD zone. Value can
be set higher if desired.
Table A-2 Sequence of events description and troubleshooting guide
Event Description Notes and Troubleshooting tips