Lincoln Electric SVM128-A Connection of Lincoln Electric Wire Feeders, Connection of the LN-7 to

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C-4 C-4

ACCESSORIES

CONNECTION OF LINCOLN ELECTRIC WIRE FEEDERS

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CONNECTION OF THE LN-7 TO THE

SA-250 WITH K623-1 WIRE FEED MODULE 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 “CV–” terminal of the welder.

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

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 SA-250 output terminals.

3.Connect the K867 Universal Adapter to the K291 or K404 input cable and the 14 pin amphenol of the SA-250 as indicated in Figure C.1. Make the prop- er connections for local or remote control accord- ing 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.

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 circuits may be damaged. The engine governor set- ting is preset at the factory — do not adjust above RPM specifications listed in this manual.

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

NOTE: For remote control, a K775 remote control is required. See Figure C.1.

CAUTION

When the welder is in local control, the electrode is always “HOT.”

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FIGURE C.1

SA-250/LN-7 WITH K867 ADAPTER CONNECTION DIAGRAM

		SPARE	Insulate Each
	14 PIN	82		LN-7
		81	Unused Lead
	AMPHENOL			CONTROL
		42	Individually	BOX
		41
+		31	31
		32	32
CV-		2	2
		4	4	K291 OR K404
		21	21
TO		GND	GND	INPUT CABLE
	K867 UNIVERSAL		GREEN
WORK
	ADAPTER PLUG	75	75
ELECTRODE CABLE		76	76
		77	77	K775 OPTIONAL
TO LN-7		Splice Leads
				REMOTE CONTROL

and Insulate

SA-250