Faults During Start-Up - ABB RELION REB500 Operation Manual

Section 7
Troubleshooting
For details about fault indications and corrective actions, see
Rear side
The yellow LED bat1(2) signals the availability of the station battery.
• On: The station battery is available and the voltage is within the tolerance.
• Off: The input voltage from the station battery is not in range, or not available.
Corrective Action: Check the battery voltage on input side of BU/ CU and the state of the MCB if
necessary.
The green LED rdy1(2) signals the availability of the BU/CU internal voltages:
• On: All BU/CU inherent voltages are within tolerance (power supply is in Service).
• Off: Short-circuit or overload of one or several internal voltage(s) of BU/CU (Supposing the station
battery is available and the yellow LED is On).
Corrective Action: The voltage supply is defective, BU/CU shall be replaced.
If the green Normal LED on front side of a BU/CU is On and there are no system alarms from this IED,
while the green LED rdy1(2) on the rear side is Off, this discrepancy may point to a LED indication
defect.
Corrective Action: A LED indication is defective, the respective BU/CU shall be replaced.
7.2.2

Faults during start-up

Description
1 CU/BU → Green
Normal LED Off
2 CU/BU → Green
Normal LED
Flashing
3 CU/BU → Alarm
Indicator LED On
4 CU/BU → System
Restart
5 CU/BU → No LHMI
activity, all LEDs Off
6 Switch → Power
LED Off
7 Switch → Power
Fault LED On
8 14205_Block EFP
always On
98
Possible Cause
Power missing
Hardware failure
System is starting
Hardware failure
Missing Process Bus connections
Check Section 7.2.3
Erroneous Setfile
Hardware failure
Ethernet cable plugged into X0
Hardware failure
Power missing
Hardware failure
Redundant power missing
Wrong Ethernet connection between switches
Signal 11505_Close command CB missing
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1MRK 500 132-UUS Rev. B
Section 7.2.2.
GUID-D3E58EA8-731D-4A91-B2D4-BADCAD4E943D v2
GUID-FD8AD645-7D10-46A3-A864-4A7144773F64 v4
Corrective Action
Check power supply of CU/BU
Replace CU/BU
Wait up to 3 minutes for Startup
Replace CU/BU
Check Section 7.2.3
Check Section 7.2.3
Verify Setfile
Replace CU/BU
Remove cable from X0
Replace CU/BU
Check power supply of the switch
Replace switch
Check power supplies of the Switch
Check Section 7.2.4
Configure signal 11505
Distributed busbar protection REB500
Operation manual