System Wiring; Battery Back-Up Wiring Installation; Battery Back-Up Wiring - Vodavi Starplus Triad 1/2/3 Installation Manual

System Wiring

System Wiring

Battery Back-Up Wiring Installation

The system can be equipped to provide operation from external batteries
if local AC power fails. The Back-Up batteries are connected to the strip
connector on the front of the PSU as shown:
The external batteries must provide 24 Volts DC. This is generally
accomplished by connecting two 12 volt batteries in a series
arrangement. Operation on batteries is controlled by the PSU. This PSU
provides charging current to the batteries during normal AC power
operation at a maximum of about 1 amp.
During battery operation, the PSUs discontinue battery operation if the
AC power is reapplied or the battery voltage is too low to maintain
proper system operation. If a low-battery cut-off occurs and a new
battery is installed, it is necessary to reset the Battery Back-Up circuit in
the PSU manually by momentarily depressing the white colored BATT.
RESTART switch located on the faceplate of the PSU.
- +
+MARKER
-MARKER
+ -
Figure 2-25: Battery Back-Up Wiring
PSU
BATT
+ -
4 PIN
CONN
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