Siemens S5-135U/155U - Manual (Page 105)

4-39
System Manual
C79000-G8576-C199-06
The following table contains several examples.
Causes Relay LED Indication
Rechargeable
Battery
Battery or external
supply Jumpers
Battery
Warning RB MB /BAU
In Order In Order MA-NA closed
MM-NN closed
MB-NB open – Dark Dark Inactive
Faulty In Order MA-NA closed
MM-NN closed
MB-NB open Active Lit Dark Inactive
In Order Faulty MA-NA closed
MM-NN closed
MB-NB open Active Dark Lit Inactive
Faulty Faulty MA-NA offen
MM-NN closed
MB-NB open Active Lit Lit Active
Not monitored In Order MA-NA open
MM-NN closed
MB-NB open – Dark Dark Inactive
Not monitored Faulty MA-NA open
MM-NN closed
MB-NB open Active Dark Lit Active
Not monitored Not monitored MA-NA irrelevant
MM-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.
Rechargeable
Battery and
Battery Monitoring
Central Controllers and Expansion Units Power Supply Units