4.5.2
Setting the Power
Supply Unit
Locations of jumpers
The figure shows the jumper settings when the unit is delivered.
Functions of the jumpers
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 signalling relay (contacts 2-3 closed).
Battery undervoltage ( < 2.7 V) results
in battery fault signal (jumper MM-NN).
Apart from "Batt. Low" LED and output
of signal BAU, the signalling relay can
be activated as of Version 6 of the PSU.
Battery fault will not be indicated by fault
state of the signalling relay.
RR-LL closed
RR-LL open
Connector
X1
Connector
X2
RR
Front Plate
LL
MM
NN
R
F
6ES5 955-3NA12 Power Supply Unit
System Manual
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C79000-B8576-C199-03