Sorensen DCS Series 3kW Supplies
Advanced Operation
4.2.3
Resetting Jumpers and Switch
Most applications will use the default factory settings of the internal jumpers, JMP1 and JMP2,
or of the internal 8-position DIP switch, SW1. If the jumpers and switch should require resetting,
read
, and follow the procedures in this section.
The steps to follow are:
Dissipating stored energy
Removing the cover
Removing the option board (when required)
Resetting JMP1, JMP2 and SW1
Replacing the option board
Replacing the cover
Powering up
Dissipating Stored Energy
1. Ensure the power supply is turned OFF. Disconnect the AC input connector. Allow
five (5) minutes to elapse to dissipate stored energy before removing the cover.
Removing the Cover
2. Unscrew and remove the eight (8) flathead Philips screws from the top of the cover:
two (2) are located near the front panel, six (6) near the rear panel. (Use a #1 Philips
screwdriver.)
3. Loosen but do not remove the six (6) Philips screws located three (3) to a side in the
slots along each side of the power supply.
4. Lift cover off and set aside.
Removing the Option Board (when required)
The power supply may have either of two option circuit boards installed over the A2 circuit board
where the jumpers and switches are located. The option board must be removed to allow
access to them.
5. Unplug any external mating connector and attached wiring.
6. Use a nut driver to remove the jackscrews that fasten the option board to the rear panel.
7. Unscrew the mounting screws that fasten the option board down.
8. Unplug any attached cables.
9. Lift out the option board and set aside.
Resetting JMP1, JMP2, and SW1
10. Lift the appropriate jumper from its pin header and replace it as the programming
requires. The default location is B-C for both JMP1 and JMP2. Alternate locations are
A-B in each case.
11. Push the dual position SW1 switches closed (ON) or open (OFF) as required by the
application.
Operation Manual
4-5
