Lincoln Electric service manual Connecting the LN-7 to the Idealarc DC-655 Terminal Strip

C-7 C-7

ACCESSORIES

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CONNECTING THE LN-7 TO THE IDEALARC DC-655 (TERMINAL STRIP)

1.Set the Idealarc DC-655 POWER toggle switch to the OFF (0) position.

2.Disconnect main AC input power to the Idealarc DC 655.

3.Connect the wire feeder control cable leads to the Idealarc DC-655 terminal strip as shown in Figure

C.3.

4.Connect the wire feeder control cable ground lead

to the frame terminal marked .

NOTE: The Idealarc DC-655 must be properly grounded.

5.PERFORM THIS STEP ONLY IF THE LN-7 IS EQUIPPED WITH A METER KIT.

Extend wire feeder control cable lead #21 so it can be connected directly to the work piece.

a.Make a bolted connection using AWG #14 or larger insulated wire. Tape the bolted connec- tion with insulating tape.

NOTE: If the work cable length is less than 25 feet and the connections to the work piece are secure, then wire feeder control cable lead #21 can be connected directly to the DC- 655 terminal strip.

b.An S-16586-X remote voltage sensing work lead is available for this purpose.

c.Keep the #21 lead electrically separate from the work cable circuit and connection.

d.Tape the #21 lead to work cable for ease of use.

NOTE: The connection diagram shown in Figure C.3 shows the electrode connected for positive polarity. To change polarity:

a.Set the IDEALARC DC-655 POWER toggle switch to the OFF (0) position.

b.Move the electrode cable to the negative (-) output terminal (High inductance or low induc- tance as needed).

c.Move the work cable to the positive (+) output terminal.

d.Connect control cable lead #21 to “+21” on the terminal strip.

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IDEALARC DC-655