Sorensen DCS Series 3kW Supplies
Installation
2.6.3
2.6.4
Current
Mode Operation Check
1. Ensure the front panel AC power switch is set to OFF.
2. Turn the voltage and current controls on the front panel fully counter-clockwise.
3. Turn the VOLTAGE control one (1) or two (2) turns clockwise.
4. Connect a DC shunt across the output terminals on the rear panel, using appropriately
gauged wire and hardware. The recommended current ratings for the DC shunt and the
wire must be at least 10% more than the output current of the power supply model.
5. Connect a Digital Voltmeter (DVM) across the DC shunt. The DC shunt-DVM
combination must be rated better than 0.5% accuracy.
6. Turn the AC power switch ON.
7. Turn the CURRENT control slowly clockwise.
8. Compare the DVM reading with the front panel ammeter reading using I=V/R where V is
the DVM reading and R is the DC shunt resistance.
The control range will be from zero to the maximum rated output for the power supply model.
The red current mode LED will be illuminated.
Front
Panel Function Checks
1. Press OVP CHECK switch and check that the voltmeter displays approximately the
model-rated output voltage plus 10%.
2. Turn OVP SET potentiometer counter-clockwise and check that the voltmeter reading
decreases. Continued turning (up to 20 turns) will see the reading decrease to
approximately 5% of the model-rated voltage output. Turn the potentiometer clockwise
until the voltmeter once again displays approximately the model-rated output voltage
plus 10%.
3. With voltage and current controls turned all the way in a clockwise direction, press the V
& I CHECK switch and check that the voltmeter and ammeter display a minimum of the
power supply model output ratings.
4. With voltage and current controls turned all the way in a clockwise direction, push the
STANDBY switch to its IN position and check that the voltmeter reading falls to zero and
the S/D (Shutdown) LED illuminates. Push the STANDBY switch once again to reset it to
its OUT position. The S/D LED will turn off.
5. Push REM/LOC switch to IN position and check that the REM LED illuminates and the
voltmeter reading falls to zero. Reset the REM/LOC switch to its OUT position for local
(default) operation.
Operation Manual
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