Sorensen DCS Series 1kW and 1.2kW Supplies Installation and Operation
M362500-01 Rev K 2-7
2.5 Initial Functional Tests
Before connecting the unit to an AC outlet, make sure that the power switch is in the OFF
position and that the voltage and current controls are turned fully counter clockwise. Check that
the J3 mating connector on the rear of the unit is in place with jumpers connected for local
operation as shown below. (This is the default configuration as shipped from the factory).
Connect the unit to a 230 Vac grounded outlet (115 Vac outlet if previously configured for
115 Vac operation as per instructions in section 2.3.1) and switch the unit on. After a short
power on delay the front panel meters should light up with both displays reading zero.
Note: AC power must be off for a minimum of 45 seconds before powering on again.
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1
Connector J3 Configuration for Local Operation
To check voltage mode operation, proceed as follows:
•
Connect a DVM, rated better than 0.5% accuracy, to the rear output terminals,
observing correct polarity.
•
Rotate the CURRENT control 1/2 turn clockwise. Slowly rotate the VOLTAGE control
clockwise and observe both the internal and external meters. Minimum control range
should be from zero to the maximum rated output. Compare the test meter reading
with the front panel voltmeter reading. Check that the green voltage mode indicator
led is ON.
•
Set the POWER switch to OFF.
To check current mode operation, proceed as follows:
•
Rotate the VOLTAGE and CURRENT controls fully counterclockwise.
•
Rotate the VOLTAGE control 1/2 turn clockwise.
•
Connect a high current DC ammeter across the rear output terminals, observing
correct polarity. Select leads of sufficient current carrying capacity and an ammeter
range compatible with the unit’s rated current output. The ammeter should have an
accuracy of better than 0.5%.
•
Set the POWER switch to ON.
•
Rotate the CURRENT control slowly clockwise. The control range should be from
zero to the maximum rated output. Compare the test meter reading with the reading
on the front panel ammeter. Check that the red current mode indicator led is ON.
•
Set the POWER switch to OFF.
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