Siemens S5-135U/155U - Manual (Page 91)

4-25
System Manual
C79000-G8576-C199-06
The power supply unit is delivered with the settings shown in bold print in
the following table.
Mark your chosen settings in the right-hand column and use this chart for the
subsequent implementation.
Function Selection Jumper Setting Application/Note (X)
Battery monitor
– switched on for
rechargeable battery and battery MM - NN
MA - NA closed
closed Redundant backup
– switched on for battery and
off for rechargeable battery MM - NN
MA - NA closed
open If, for example, no redundance is
required in backup, i.e. the rechargeable
battery is missing
– switched off MM - NN
MA - NA open
irrelevant For example, monitoring is not needed
for EU without backup
Reaction of battery monitoring
following battery failure
– /BAU signal active following
return of line voltage MB - NB open
– /BAU signal active following
return of line voltage and during
operation MB - NB closed The possibility of evaluating the battery
monitoring during operation is
dependent on the CPU in use
After failure of more than one fan or
inadequate air flow
– PSU shutdown F-R closed
– No PSU shutdown F-R open Caution: To prevent overheating of
modules, the PSU must be shut down
after 60 s at the latest (for example, by
time relay)
Voltage monitor
– switched off BA-EX closed Monitoring of load voltage input
switched off
– switched on BA-EX open Monitoring of load voltage input
switched on
Relay alarm Fault message initiated by fan
f il
/ i hibi i b
– driven by fan monitor and
output inhibit BB-AA closed
g y
failure/output inhibit active; can be
signaled to control room, for example.
– driven only by fan monitor BB-AA open Fault message initiated by fan failure;
can be signaled to control room, for
example.
Establishing the
Jumper Settings
Central Controllers and Expansion Units Power Supply Units