Troubleshooting
8.2 PROFINET alarm list
Power supply system SITOP PSU8600
360 Manual, 09.2018, A5E36758446-5-76
257 40 MR Malfunction in parallel operation
of output 1 and 2 due to voltage
Voltage difference of the parallel outputs is outside
the permissible limit.
257 41 MR Malfunction in parallel operation
of output 1 and 2 due to current
discrepancy.
Current difference of the parallel outputs is outside
the permissible limit.
257 42 MR Malfunction in parallel operation
of output 3 and 4 due to voltage
Voltage difference of the parallel outputs is outside
the permissible limit.
257 43 MR Malfunction in parallel operation
of output 3 and 4 due to current
Current difference of the parallel outputs is outside
the permissible limit.
257 45 F Shutdown due to system over-
System load current is outside the permissible over-
257 46 F System safety shutdown due to
critical load difference between
Critical load difference between the AC input and the
outputs. The initiated safety shutdown will turn off the
257 47 F System safety shutdown due to
significant load difference be-
tween AC input and outputs.
Out of range difference between AC input and out-
puts. Turn power off and on to reactivate the system.
257 48 MD Ready for restart after critical
load condition.
Ready for restart after safety shutdown because of
critical load current. Turn power off and on to reacti-
257 49 MD Ready for restart after out of
profile peak load.
Ready for restart after safety shutdown because out
of profile peak load.
257 50 N System restart completed after
System restart completed after safety shutdown.
257 51 N Parallel mode activated on
Outputs 1 and 2 are working in parallel mode and
must therefore be connected externally.
257 53 MR Input voltage above permitted
Input voltage above permitted range
257 54 MR Input voltage below permitted
Input voltage below permitted range
257 55 MR Safety shutdown of internal
Safety shutdown of internal primary supply unit
257 56 N Client shutdown finished The connected client has completed its switch-off
operation. The output can now be switched off.
257 57 N Client shutdown initiated The shutdown sequence to exit the connected client
was started. The sequence will now run inde-
pendently of any operation to return the supply.
258 1 MR Overload shutdown of the out-
Invalid overload occurred at the output. The output
258 2 N Overload detected at the out-
put.
Output current at the output is above the preset
response threshold but is still within the permissible
overload profile. The output current is about to be
limited.
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