INSTALLATION and OPERATION SORENSEN DCS SERIES MANUAL
2-14
2.9.4 Remote Programming of OVP with External Current Sources
To remotely program the OVP trip level using a 0-1mA current source use the following procedure.
1. With the unit off and disconnected from its AC source remove the cover and set switches SW1-4 and
SW1-8 closed (default factory setting).
2. Using a small flat bladed screwdriver through the OVP ADJUST hole in the front panel, turn the
adjusting screw fully clockwise (until audible clicking is heard or 20 turns maximum).
3. Remove the default jumper connecting pins 16 and 3 of connector J3 and connect the current source
between pins 3 (positive) and 12 (negative). Set the programming source to 1mA.
4. Turn the unit on and adjust the output to the desired trip voltage.
5. Slowly reduce the programming current until the red OVP indicator lamp lights and the power
supply shuts down.
6. Turn the POWER switch to OFF.
7. Turn the voltage control knob to minimum.
8. Turn the POWER switch back ON and increase the voltage to check that the power supply shuts off
the output at the desired voltage.
SW1-1
SW1-2
SW1-3
SW1-4
SW1-5
SW1-6
SW1-7
SW1-8
CLOSED
CONNECTOR J3
0-1mA
1312
25
3 1
14
OPEN
Switch SW1
SW1-1 Off (Open)
SW1-2 Off (Open)
SW1-3 Off (Open)
SW1-4 On (Closed)
SW1-5 Off (Open)
SW1-6 Off (Open)
SW1-7 Off (Open)
SW1-8 On (Closed)
Switch SW1 and Connector J3 Configuration
for 0-1mA Current Source OVP Programming
(J3 sense line, voltage control and current control jumpers shown set for local operation)
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