Siemens HiPath 3000 Service Manual page 125

ON/OFF switch for secondary operating voltages (system supply voltages)
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Caution
7
The switches for deactivating the secondary operating voltage (system supply
voltage) must be set to "DC-OFF" on all LUNA2s during maintenance work that
requires the system to be de-energized (for example, central board replace-
ment). The system is only in de-energized state if the switches on ALL
LUNA2s are set to "DC-OFF" position.
The system is only restarted if all LUNA2 switches are returned to the "DC-ON"
position.
Switches for setting the operating mode (the operating mode must be set before the outer
●
panel is mounted):
– Mode 1: For use as power supply (LED illuminated)
– Mode 2a: For use as battery charger (LED flashing) with a charging voltage of
54.7 Vdc
– Mode 2b: For use as battery charger (LED flashing) with a charging voltage of
53.5 Vdc
Mode 1 should always be set for the power supply units plugged in at LUNA2
>
slots 1, 2 and 3 (expansion cabinet only).
The following applies to the power supply unit plugged in at the LUNA2 slot
marked "4":
Set to mode 1 if this module is to be used for LUNA2 redundancy.
●
Set to mode 2a or 2b if this LUNA2 module is to be used as a battery charg-
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er.
P31003-H3550-S403-4-7620, 02/05
HiPath 3000 V5.0, HiPath 5000 V5.0, Service Manual
boards.fm
Boards for HiPath 3000
Central Boards
3-59