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34 Fault tracing
1
2
3
4
5
1
Cross fault or wiring fault
2
Line fault across start button
3
Potentiometer or adjustment failure
4
Simultaneity error
5
Under or over voltage
To reset the emergency stop safety relay [A61] after fault situations, switch off the external
power supply of the safety relay. If the emergency stop safety relay cannot be reset, check
the reset circuit connections.
If STO hardware failure (5090) is generated, check STO wiring against the circuit diagrams.
See drive hardware manual for more information.
￭
ACS880-07 drives, frames R6 to R11 and ACS880-17/37 drives, frame
R11
This table describes the status LEDs of the extension safety relay [A62].
LED
K1
K2
For more fault tracing possibilities, see the hardware and firmware manuals of the drive.
Reporting problems and failures related to safety functions
Contact ABB.
LED is lit and steady
Power supply is connected. Relay K1 is energized.
Power supply is connected. Relay K2 is energized.
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