12 | SAMLEX AMERICA INC.
SAMLEX AMERICA INC. | 13
SeCtIOn 6 |
Operation
Please refer to fig 2.1, page 5 - Layout & output Connections.
!
cAUtion!
If AC input power is not available and a battery has been connected for backup function, the
load will be powered by the battery and the battery will continue to discharge as long as the
load is in oN condition. When the load is not delivering power, it still draws current for its
self-consumption (called "No Load Current"). When AC input power is not available, switch
off the load if not required, otherwise the battery will get discharged because of the "No
Load Current" drawn by the load.
to protect the battery against deep discharge, please consider using Samlex America, inc.
Battery Guard Model no: BG-40, which is a 40A, programmable low voltage disconnect
switch to be used in line with the battery.
SWitcHinG on / oFF
Switching on (Without Battery Backup - no external Battery -
Unit operates as a normal Power Supply):
-
Check that the load has been connected to the Load Terminals (3, 4) and NoT To THE
BATTErY TErMINALS (5, 6)
-
Switch oN the unit with the help of the red Power oN / off Switch (1). If AC power is
available and the internal AC side fuse is intact, the oN / off Switch will be lighted red
indicating that the Power Supply Section is in oN condition
-
After a few milli sec, 13.8V ± 0.2V will be available at the Load and Battery Terminals
-
Switch oN the load
Switching on (With Battery Backup - external Battery is connected):
-
Check that the load has been connected to the Load Terminals (3, 4) through external 25A
Load Side fuse (f2)
-
Check that the external battery has been connected to the Battery Terminals (5, 6) through
external 25A Battery Side fuse (f1)
-
Switch oN the unit with the help of the red Power oN / off Switch (1). If AC power is avail-
able and the internal AC side fuse is intact, the oN / off Switch will be lighted red indicat-
ing that the Power Supply Section is in oN condition
-
After a few milli sec, 13.8V ± 0.2V will be available at the Load Terminals (3, 4) and the
external battery will start charging at current of up to 4A determined by its State of Charge.
The voltage at the Battery Terminals (5,6) will get clamped to the actual terminal voltage of
the battery corresponding to its State of Charge
-
Switch oN the load
-
The Power Supply Section will supply all the current consumed by the load and the external
battery will be maintained in charged condition all the time at float Voltage of 13.8V ± 0.2V
(when fully charged)
Switching oFF:
-
Switch off the load first
-
Switch off the unit with the help of the red Power oN / off Switch (1). red light inside the
oN /off switch will switch off
