Fault Tracing; Diagnostic Leds - ABB FEN-01 User Manual

Fault tracing

Diagnostic LEDs

The FEN-01 is equipped with two diagnostic LEDs. The STATUS
LED describes the status of the FEN-01 and the ENC ST LED the
status of the encoders. Description of the LED signals is
presented below.
Colour Description
Green OK
Orange Not initialized or communication fault to
control unit
Red Not in use
Green Encoder(s) OK
Red TTL encoder (X31) fault
Orange TTL+ encoder (X32) fault
Red / orange TTL encoder fault X31 & TTL+ encoder
swapping X32 fault
Red flashing TTL encoder (X31) warning
Orange TTL+ encoder (X32) warning
flashing
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Fault tracing