www.DeltaPSU.com
No.
Operation
Description
LED Status
Signals Status
Troubleshooting
0
Check the battery
voltage
• Battery voltage should be in
21-27.6 Vdc
-
-
• If battery voltage is less
than 21 Vdc, the DRU
module will not operate
in buffering mode.
• Battery voltage 19.2 Vdc min will
enable “Repl. BAT.” relay contact.
(DRU module will not charge the
battery)
-
-
• Change the battery if
the voltage is less than
19.2 Vdc.
1
Connect battery to
DRU module
Connect the battery cable to “BAT. IN”
terminal of DRU module (+ to + and - to -).
All LED OFF
(correct connection)
Ready: Open
Buffering: Open
Replace BAT: Open
-
2
Select Charging
Current &
Buffering Time
• Use the rotary selector switch to set a
suitable Charging Current for battery
(default is minimum value)
• Use the rotary selector switch to set a
suitable Buffering Time for the load
demand
All LED OFF
(correct connection)
Ready: Open
Buffering: Open
Replace BAT: Open
-
Operating Sequence
8
