Siemens S5-135U/155U - Setting the Power Supply Unit

4-60
System Manual
C79000-G8576-C199-06
4.4.2 Setting the Power Supply Unit
The figure shows the jumper settings when the unit is delivered.
Connector
X1
Connector
X2
RR
Front Plate
LL
MM
NN
R
F
The jumper settings in bold print indicate the status when the unit is
delivered.
Function Jumpers
Battery monitor (BAU) On
Battery monitor (BAU
) Off
NN-MM closed
NN-MM open
PSU shutdown after fan fault
No PSU shutdown after fan fault (only LED
indication, relay signal)
F-R closed
F-R open
Battery fault will be indicated by fault state of the
signaling relay (contacts 2-3 closed).
Battery undervoltage (< 2.7V)
results in
battery fault signal (jumper
MM-NN).
Apart from “Batt. Low” LED
and output
of signal BAU,
the signaling
relay can be activated as of Version 6 of the
PSU
Battery fault will not be indicated by fault state of the
signaling relay
RR-LL closed
RR-LL open
Locations of
Jumpers
Functions of the
Jumpers
Central Controllers and Expansion Units Power Suppl
y
Unit
s