ABB REA 105 - Self-Supervision Unit (IRF); Front Panel

1MRS 751005-MUM
Arc Protection Module
Operator’s Manual
REA 105
9
4.6. Self-supervision unit (IRF)
In addition to that mentioned above, the self-supervision unit monitors the operating
voltages of the device. If a fault is detected in the operating voltages, the self-
supervision unit prevents the device from operating. When the LED indicator “IRF”
of the REA 105 unit is lit, the LED “Port A/B Fault” of the REA 101 relay starts
flashing, the LED indicator “IRF” is activated and the IRF relay resets.
4.7. Front panel
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REA 105
ARC PROTECTION
ABB Network Partner
2
5
IRF
Uaux
1MRS090418-AA
Ser. No
OFF
8 = Sensor supervision deactivation ON/OFF
3 = Automatic light ref level ON/OFF
IN
Light
Fault
OUT
Sensor
4 = Sensor ON/OFF
1 = Terminator 1 ON/OFF
SG1
ON
SG1
Light ref.
level adj.
MAX
MIN
paneli5
TRIP
2 = Terminator 2 ON/OFF
5 = Light to port IN1 ON/OFF
6 = Delayed light to port IN1 ON/OFF
7 = Delay ON = 150 ms, OFF = 100 ms
X4
9
67
HSO1
Port
X3
IN2
Port
X2
OUT1
Port
X1
IN1
123
Light
10
~
+
~
-
HSO2
~
+
~
-
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