Fault Tracing; Contents Of This Chapter; Status Leds - ABB FSO-21 User Manual

Fault tracing

Contents of this chapter

This chapter describes the status LEDs and provides generic diagnostics and
troubleshooting tips for FSO related faults generated by the drive.

Status LEDs

The status LEDs are situated on the front of the FSO module. The table below
describes the status LED indications.
LED LED off
POWER No power
RUN FSO is in the
Fail-safe mode
and Safe state
(STO
activated).
STATUS/FAULT The drive is in
normal
operation,
without active
safety functions
and no faults.
STO The drive STO
circuit is closed
and the drive is
in operation.
FB Safety
communication
to the fieldbus
has stopped.
LED lit and steady
Green Power to the
FSO is on.
Green FSO is in the
Operational or
Safe state.
Green A safety function
is active.
Red FSO is in the
Fail-safe mode.
Green The drive STO
circuit is open.
Green FSO is ready to
start safety
communication
to the fieldbus.
Fault tracing 403
14
LED blinking
- -
Green FSO is in the
Configuration or
Start-up mode.
Green Request for a safety
function has ended
but it has not been
acknowledged.
Red FSO is in the
Configuration mode
(RUN LED is also
blinking).
- -
Green Safety
communication to the
fieldbus is running.