Installation
Sorensen DCS Series 3kW Supplies
2.6 Initial Functional Tests
The initial functional test procedure includes power-on and front panel function checks as well
as voltage or current mode operation checks. See
panel diagrams.
Before starting this procedure, ensure that the J3
programming connector is in place on the rear panel
with jumpers connected for local operation as shown in
. This is the default configuration as shipped
from the factory. If the unit has been in use and is being
retested, ensure you disconnect the load, reset the J3
jumpers to the default, and turn the OVP potentiometer
to maximum before performing these tests.
Figure 2-7 Connector J3
Default Configuration
2.6.1
2.6.2
Power-on
Check
1. Ensure that the AC power switch is in the OFF position.
2. Turn the voltage and current controls fully counter-clockwise.
3. Connect the unit to an AC outlet.
4. Turn the front panel AC power switch ON.
After a short, power-on delay, the front panel digital meters will light up. Both voltmeter and
ammeter displays will read zero. The green voltage mode LED will be illuminated.
Voltage
Mode
Operation Check
1. Ensure the voltage and current controls on the front panel are turned fully counter-
clockwise.
2. Connect a Digital Voltmeter (DVM) to the output terminals on the rear panel, observing
correct polarity. The DVM must be rated better than 0.5% accuracy.
3. Turn the CURRENT control a 1/2-turn clockwise. Slowly turn the VOLTAGE control
clockwise and observe both the front panel voltmeter and the DVM.
4. Compare the DVM reading with the front panel voltmeter reading to verify the accuracy
of the internal voltmeter.
The minimum control range will be from zero to the maximum rated output for this particular
power supply model. The green voltage mode LED will be illuminated.
5. Turn the front panel AC power switch OFF.
2-8
Operation Manual
