User's Manual

Table Of Contents
2.2. Power Supply
Built-in Power Unit
You can use the built-in power unit to connect to the mains power. AC module built-in power
unit or Open Frame built-in power unit is installed. Please refer to Using the built-in
Power Unit in 3.3 Hardware Installation for more details.
Please note:
Ensure to turn off all power supplies including Built-in Power Unit and SLA
Battery before connecting or removing cables or wires.
Rechargeable Battery
A rechargeable battery can be installed inside the Control Panel to serve as a backup in
case of a power failure.
During normal operation, AC power is used to supply power to the Control Panel and at the
same time recharge the battery.
If the battery switch is set as OFF, the battery will not be charged when AC power is
connected and nor will it serve as a backup power source when AC power is missing. You
need to switch the battery to ON for it to be charged when AC power is connected and
serve as a backup power source when AC power is missing.
9