Vacon 100 Industrial Applications Manual page 343

FAULT TRACING
Fault
Fault ID Fault name
code
30 520 Safety diagnostics
521 Safety diagnostics
522 Safety diagnostics
523 Safety diagnostics
524 Safety diagnostics
525 Safety diagnostics
526 Safety diagnostics
527 Safety diagnostics
530 Safe torque off
LOCAL CONTACTS: HTTP://DRIVES.DANFOSS.COM/DANFOSS-DRIVES/LOCAL-CONTACTS/
Possible cause
The STO inputs have a dif-
ferent status.
A malfunction in the ATEX
thermistor diagnostic. There
is no connection in the ATEX
thermistor input.
A short-circuit in the con-
nection of the ATEX ther-
mistor input.
A problem occured in the
internal safety circuit.
An overvoltage in the safety
option board
An undervoltage in the
safety option board
An internal malfunction in
the safety option board CPU
or in the memory handling
An internal malfunction in
the safety function
An emergency stop was
connected or some other
STO operation was activa-
ted.
VACON · 343
How to correct the fault
Do a check of the external safety
switch. Do a check of the input
connection and cable of the safety
switch.
Reset the drive and restart.
If the fault occurs again, ask
instructions from your nearest dis-
tributor.
Reset the drive and restart.
If the fault occurs again, change
the option board.
Do a check of the ATEX thermistor
input connection.
Do a check of the external ATEX
connection.
Do a check of the external ATEX
thermistor.
Reset the drive and restart.
If the fault occurs again, ask
instructions from your nearest dis-
tributor.
Reset the drive and restart.
If the fault occurs again, ask
instructions from your nearest dis-
tributor.
Reset the drive and restart.
If the fault occurs again, ask
instructions from your nearest dis-
tributor.
Reset the drive and restart.
If the fault occurs again, ask
instructions from your nearest dis-
tributor.
Reset the drive and restart.
If the fault occurs again, ask
instructions from your nearest dis-
tributor.
When the STO function is activated,
the drive is in safe state.
11