
Troubleshooting
8.2 PROFINET alarm list
Power supply system SITOP PSU8600
360
Manual, 09.2018, A5E36758446-5-76
Channel
Error Type
Extended
Error Type
Severity Alarm text
Help text
257
40
MR
Malfunction in parallel operation
of output 1 and 2 due to voltage
discrepancy.
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
discrepancy.
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
discrepancy.
Current difference of the parallel outputs is outside
the permissible limit.
257
45
F
Shutdown due to system over-
load.
System load current is outside the permissible over-
load profile.
257
46
F
System safety shutdown due to
critical load difference between
AC input and outputs.
Critical load difference between the AC input and the
outputs. The initiated safety shutdown will turn off the
device immediately.
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-
vate the system.
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
safety shutdown.
System restart completed after safety shutdown.
257
51
N
Parallel mode activated on
outputs 1 and 2.
Outputs 1 and 2 are working in parallel mode and
must therefore be connected externally.
257
53
MR
Input voltage above permitted
range
Input voltage above permitted range
257
54
MR
Input voltage below permitted
range
Input voltage below permitted range
257
55
MR
Safety shutdown of internal
primary supply unit
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-
put.
Invalid overload occurred at the output. The output
was switched off.
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.