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Figure 3-2 below depicts a detailed view of the power supply front panel.
Power Supply
ON/OFF Button
The front panel of the power supply module includes an ON/OFF button for the module.
When the power supply module is in the OFF state, all the power outputs except Battery
In/Out are disabled. Press the button for at least two seconds to change states.
In power supply modules equipped with a battery charger, if the power supply module
is in the OFF state, and the RTU main power is connected, the Battery In/Out is not
disabled to ensure battery charging.
If the RTU main power (AC/DC) is disconnected and the power supply module is shut
off, there is still some current draw from the battery. Therefore, if the power supply is
to be off for a long period (more than several hours), the battery should be
disconnected from the power supply in order to maintain battery capacity. To do so,
disconnect the battery cable from the Battery In/Out connector on the front panel of
the power supply module.
If main power is cut to the RTU, the power supply module remembers its previous
state (ON or OFF) and reverts to it when main power is restored.
Indication L E Ds
AU X
AU X
DO
B AT
On/Off B utton
Auxiliary Output 1A
Auxiliary Output 1B
Auxiliary Output 2A
Auxiliary Output 2B
12V DO Control
12V Out to I/O E xpans ion
B attery In/Out
T emperature S ens or
AC/DC Main P ower Input
DC Main P ower Input
Figure 3-2 ACE3600 Power Supply – Front Panel
3-4
Power Supply Module and Backup Battery
DC Power Supply Low-Tier
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