Self-Supervision Unit (Irf); Front Panel - ABB REA 105 Operator's Manual

1MRS 751005-MUM
4.6.
4.7.
Arc Protection Module
Operator's Manual

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.

Front panel

X1 X2 X3
Port Port Port
OUT1
IN1 IN2
SG1
1 = Terminator 1 ON/OFF
2 = Terminator 2 ON/OFF
3 = Automatic light ref level ON/OFF
4 = Sensor 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
8 = Sensor supervision deactivation ON/OFF
Light ref.
level adj.
ON
Light
MAX
Fault
SG1
Sensor
OUT IN
MIN
OFF
)LJ  )URQW SDQHO
X4
10 7 6 3 2 1
9
~ ~
~ ~
+ -
+ -
Light
HSO1
HSO2
ABB Network Partner
REA 105
ARC PROTECTION
1MRS090418-AA
Ser. No 5
2
TRIP
IRF Uaux
paneli5
REA 105
9