Instruction manual

ACU-1000 Operations Manual
2-40 Interoperability Now
2.12.1 Power Supply Charger Switch
+BUS VOLTAGE TO MODULES
SHOULD NOT REQUIRE READJUSTMENT
R17,R28,R22 FACTORY ADJUSTED
FUSE HOLDER LOCATED ON OPPOSITE
SIDE OF THIS PANEL
250V: 10A FB
F1
-12V ADJUST
R17
CHARGE VOLTAGE ADJUST
R28
15.5V ADJUST
R22
CHARGE
OFF ON
S3
Figure 2-9 Power Supply Module Showing Charger Switch Location
The PSM module has only one user-configurable setting, S3, which turns the back-up battery
charge circuitry off and on. The voltage adjustments are performed in the factory and should
not require any field readjustments. Improper adjustment could cause faulty operation or
damage the equipment.
The charge switch should be left off unless a back-up battery is attached to the rear panel DC
power input and charging of this battery is required