Fault Indications/Fault Diagnostics - Siemens S5-155U System Manual

24 V/4 A Load Power Supply
4.4.3
Fault Indications/
Fault Diagnostics
4 - 66
Load power supply faults are indicated by LEDs on the front plate:
IF... THEN...
the red LED there is a short-circuit
lights up and (overload) at outputs
2L+ to 5L+
signalling
output H+ is at
logic 1,
the module output 1L+ was
switches off (all overloaded with a
LEDs off), current of more than
5.5 A for a few seconds
AND...
the outputs will be
switched off. When the
short-circuit has been
corrected, 2L+ to 5L+
will return automatically
to normal operation.
when the overload has
been removed, the AC
supply must be briefly
switched off and on
again.
System Manual
C79000-B8576-C199-03