Functions Of Leds And Switches - ABB REA 105 Operator's Manual

REA 105
4.8.
10
Arc Protection Module
Operator's Manual

Functions of LEDs and switches

LEDs activated:
U Power supply is connected
aux
Light The sensor fibre has detected light
TRIP The unit has tripped
IRF The self-supervision system has detected a fault
(The fault LED Port A/B Fault of the REA 101 relay is flashing, the IRF
indicator is lit, and the IRF relay has reset)
Fault + IRF Sensor fibre broken
(The sensor fibre may still detect light between the sensor input and the
breakage)
Transmitter/transceiver is defective
Light Ref. Level Adj.:
Potentiometer for manual backlight compensation:
- potentiometer in use, if switch SG1/3 in OFF position.
- potentiometer not in use, if switch SG1/3 in ON position.
1MRS 751005-MUM