Lincoln Electric SVM145-B service manual Welding CV

C-5 C-5

ACCESSORIES

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CONNECTION OF THE LN-7 TO THE COMMANDER 300 USING K584 OR K594 INPUT CABLE ASSEMBLY (SEE FIGURE C.2.)

1.Shut the welder off.

2.Connect the electrode cable from the LN-7 to the “+” terminal of the welder. Connect the work cable to the “-” terminal of the welder.

NOTE: Welding cable must be sized for current and duty cycle of application.

NOTE: Figure C.2 shows the electrode connected for positive polarity. To change polarity, shut the welder off and reverse the electrode and work cables at the Commander 300 output terminals.

3.Connect the K584-XX or K594-XX Input Cable Assembly to the LN-7.

4.Connect the K584-XX or 594-XX input cable assembly to the 14-pin amphenol on the Commander 300.

5.Place the IDLER switch in the “HIGH” position.

6.Set the LOCAL/REMOTE switch to “REMOTE” if a K857 or K857-1 remote control is used. Set the switch to “LOCAL” if no remote control is used.

CAUTION

Any increase of the high idle engine RPM by changing the governor setting or overriding the throttle linkage will cause an increase in the AC auxiliary voltage. If this voltage goes over 140 volts, wire feeder control cir- cuits may be damaged. The engine governor setting is preset at the factory—do not adjust above RPM speci- fications listed in this manual.

7.Set the VOLTMETER switch to “+” or “-” depend- ing on the polarity chosen.

8.Set the OUTPUT RANGE switch to “WIRE

WELDING CV.”

9.Set the WELDING TERMINALS switch to

“WELDING TERMINALS REMOTELY CON- TROLLED.”

10.Adjust wire feed speed at the LN-7.

11.Adjust the ARC CONTROL to the desired level (“soft” or “crisp”).

NOTE: For remote control, a K857 or K857-1 remote control is required. Connect it to the 6-pin amphenol.

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FIGURE C.2

COMMANDER 300/LN-7 WITH K584 OR K594 INPUT CABLE ASSEMBLY CONNECTION DIAGRAM

		TO LN-7 INPUT
6 PIN		CABLE PLUG
AMPHENOL		K584 OR K594 CONTROL CABLE
		OPTIONAL K857
		REMOTE CONTROL
14 PIN	+	–
AMPHENOL
		TO WORK

ELECTRODE CABLE

TO WIRE FEED UNIT

COMMANDER 300