Section 8: Operation - SamplexPower SEC-1280UL Mode D'emploi

seCtIOn 8 |
SWitcHinG on / oFF
The charger is switched ON / OFF with the illuminated AC input power ON / OFF switch (9)
located on the rear panel of the unit. The switch is illuminated Red when switched ON.
inDicAtion oF noRMAL oPeRAtion AnD cHARGinG StAtUS
When the charger is switched ON without any load, the fan will come on momentarily
and switch off. Voltmeter (12) will indicate the voltage at the terminals of the charger.
Ammeter (13) will indicate the current being drawn from the charger. When a stand-
alone battery is being charged and has charged fully, the current will be almost 0A.
When the charger is in current limit condition during the Stage 1- Bulk Charge Stage
("I" Phase) or Stage 2 – Absorption Stage ("Uo" Phase), the current shown will be full
80A for SEC-1280UL and 40A for SEC-2440A .
PoWeRinG otHeR Dc LoADS
The charger can be used as a power supply or as a DC UPS (DC Uninterruptible Power
Supply. For both these applications, first set switches S1 and S2 of DIP Switch to OFF
position to set the charger to work in 2 stage mode (See under "DIP Switch Setting" on
page 21).
USinG tHe cHARGeR AS A PoWeR SUPPLy
To use as a power supply, first switch off the DC load. Connect the DC load between the
common Negative terminal and one of the 2 Positive terminals. Ensure that the maxi-
mum current drawn by the DC load is below the maximum current rating of the charger.
Switch on the charger and then the DC load.
USinG tHe cHARGeR AS A Dc UPS
In a DC UPS (Uninterruptible Power Supply) , the charger simultaneously powers the DC
load as well as the battery. As long as the AC power to the charger is available and the
charger is working normally, the charger will supply the DC load as well as charge / float
the battery. In case the AC power fails or if the charger stops working, the battery will
automatically power the DC load. As soon as the AC power to the charger is restored,
the DC load will once again be fed by the charger and at the same time the battery will
be recharged.
!
cAUtion!
Please ensure that the sum of the current drawn by the DC load and the
current desired for charging the battery is less than the maximum current capacity of the
charger.
To use as a DC UPS, first switch OFF the DC load and connect it to the battery. Now
connect the battery to the charger as explained above under. Switch on the charger
and then switch on the DC load. For operation in this mode, set switches S1 & S2 of DIP
switches marked Mode (7) to OFF for "Battery with Load" application (See under "DIP
Switch Setting" on page 21).
Operation
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