Rechargeable battery and
battery monitoring
The following table contains several examples.
Causes
Relay
LED Indication
Recharge-
able battery
Battery or external
supply
Jumpers
Battery
Warning
RB
MB
/BAU
In order
In order
MA-NA closed
MN-NN closed
MB-NB open
-
Dark
Dark
Inactive
Faulty
In order
MA-NA closed
MN-NN closed
MB-NB open
Active
Lit
Dark
Inactive
In order
Faulty
MA-NA closed
MN-NN closed
MB-NB open
Active
Dark
Lit
Inactive
Faulty
Faulty
MA-NA closed
MN-NN closed
MB-NB open
Active
Lit
Lit
Active
Not
monitored
In order
MA-NA open
MN-NN closed
MB-NB open
-
Dark
Dark
Inactive
Not
monitored
Faulty
MA-NA open
MN-NN closed
MB-NB open
Active
Dark
Lit
Active
Not
monitored
Not
monitored
MA-NA irrelevant
MN-NN open
MB-NB open
-
Dark
Dark
Inactive
Note:
Jumper MB - NB open: when line voltage returns the signal /BAU
(battery failure) is activated by a corresponding error.
Jumper MB - NB closed: when line voltage returns and during
operation the signal /BAU (battery failure) is activated by a
corresponding error.
Power Supply Units
System Manual
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C79000-B8576-C199-03