Lincoln Electric SVM145-B service manual To Work Electrode Cable To Wire Feed Unit

C-4 C-4

ACCESSORIES

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CONNECTION OF THE LN-7 TO THE COMMANDER 300 USING K867 UNIVERSAL ADAPTER (SEE FIGURE C.1.)

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.

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.

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NOTE: Figure C.1 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 K867 Universal Adapter to the K291 or K404 input cable and the 14-pin amphenol of the Commander 300 as indicated in Figure C.1. Make the proper connections for local or remote control according to Figure C.1.

4.Connect the K291 or K404 input cable to the LN-7.

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

6.Set the LOCAL/REMOTE switch to “REMOTE” if a K775 remote control is used. Set the switch to “LOCAL” if no remote control is used.

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 TERMINAL REMOTELY CON- TROLLED.”

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

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

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FIGURE C.1

COMMANDER 300/LN-7 WITH K867 ADAPTER CONNECTION DIAGRAM

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14 PIN AMPHENOL

+–

SPARE
82
81	LN-7
	WIRE
42
	FEEDER

	41
	31	31
	32	32
	2	2
	4	4
K867 UNIVERSAL	21	21	K291 OR K404
	GND
		GND	INPUT CABLE
ADAPTER PLUG

GREEN

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TO WORK	75	75
ELECTRODE CABLE	76	76
	77	77
TO WIRE FEED UNIT
		K775 OPTIONAL

REMOTE CONTROL

COMMANDER 300