Siemens SITOP PSU8600 Manual page 112

Operator control at the device
3.16 Monitoring functions
①
②
Reset of a shutdown as a result of a phase failure
1. Shut down the supply voltage of the SITOP PSU8600 for at least 10 seconds,
and remove the cause of the unbalanced line supply.
2. Switch on the supply voltage again.
The overall system and the outputs have the same operating state before the shutdown
due to phase failure.
Note
Response to an inadmissibly long phase failure - and one buffer module or UPS module in
the system
If, at rated load, the permissible duration of approximately 10 minutes for operation with a
phase failure is exceeded - and if there is a buffer module or UPS module in the system that
is ready to buffer - then the system transitions into the buffer mode.
Even if, in the meantime, the phase returns, the buffer mode is maintained until the energy
storage device has been discharged - or the specified maximum buffer time is reached. The
system is shut down at the end of buffer operation. The system is only restarted if it is
completely disconnected from the power supply voltage for at least 10 seconds.
112
LED "O.K."
LED "ON/OFF/RST"
Power supply system SITOP PSU8600
Manual, 09.2018, A5E36758446-5-76