ABB Relion REB500, Operation Manual

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7.2.3 Alarm and Event list entries
GUID-74496126-BC60-41E1-B3A4-9D3A071593E8 v2
Description Possible Cause Corrective Action
1 General alarm
CU/BU
Check Section 7.2.4 Check Section 7.2.4
Wrong BU address Correct BU address
2 Differential current
alarm CU
CT circuit fault Check Section 7.2.5
Busbar image error Check isolator image
Hardware failure Replace CU/BU
3 Isolator alarm BU Wrong binary connection to auxiliary contacts Check connection dia-grams and
connections to the auxiliary
contacts
Wrong battery voltage configured Correct setting (setfile)
Hardware failure Replace BU
4 Invalid Time
Stamps
Wrong time synchronization type and/or
parameter
Check time synchronization type
and/or parameter
Wrong time master configuration Check time master configuration
Wrong LWL connections Check LWL connections to time
master
5 Hardware
Mismatch Alarm
Wrong hardware installed Replace Hardware with
configured type.
Wrong hardware type configured Change the configuration
6 IP address conflict Ethernet interface LAN0 has address
configured which already exists in the network
connected to this interface
Change configured IP address
7 RPB Interruption
Alarm on BU
Process Bus connection interrupted Check process bus connection
(see Section 3 )
CU is offline (for example, during a CU restart) Wait until CU is up and running
again (up to 3 Minutes)
BU is stuck in standalone mode Restart the BU
8 RPB Interruption
Alarm on CU
At least one of the two process bus links of the
CU is interrupted
Check both process bus links
(see Section 3 )
7.2.4 Optical fiber connections faults
GUID-36722875-6514-4090-9FEE-70207E0F99DD v1
Description Possible Cause Corrective Action
1 Process Bus:
No link LED for a connected
BU
Optical fiber defect, or wrong
type
Check, replace optical
fibers
Optical fiber wrong connection Check connection
2 IEC 61850 Bus
No link LED for a connected
station control system
Optical fiber defect, or wrong
type
Check, replace optical
fibers
Optical fiber wrong connection Check connection
3 IEC 103 RX/TX LED dose
not blink
Optical fiber defect, or wrong
type
Check optical fibers
Optical fiber wrong connection Check optical fiber
connections
Wrong IEC103 Configuration Check IEC103
Configuration
1MRK 500 132-UEN B Section 7
Troubleshooting
Distributed busbar protection REB500 91
Operation manual
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