Lincoln Electric SVM132-A service manual Power Source To LN-8 Input Cable Plug Control Cable

TOC

TOC

A-11 INSTALLATION A-11

FIGURE A.7 – CONNECTION OF LN-8 TO DC-250, 400 AND CV/CVI POWER SOURCES

Return to Section

Return to Master

WARNING

ELECTRIC￿

SHOCK￿

CAN KILL

TURN OFF INPUT POWER TO THE WELDING POWER SOURCE USING THE DISCONNECT SWITCH BEFORE WORKING

ON THIS EQUIPMENT.

Return to Section TOC

Return to Section TOC

Return to Section TOC

Return to Master TOC

Return to Master TOC

Return to Master TOC

			POWER SOURCE
21	4	2	31	32	75	76	77	TO LN-8 INPUT
								CABLE PLUG
							C
							B	N.E.
							A
							32
							31
							2	CONTROL CABLE
							4
			CV OUTPUT
							GND
			TERMINALS ON
			DC-250				21
	NEGATIVE				POSITIVE
							N.D.
							N.B. AND N.C.
								ELECTRODE CABLE TO
				N.A.				WIRE FEED UNIT
								TO WORK

THE ABOVE DIAGRAM SHOWS THE ELECTRODE CONNECTED POSITIVE. TO CHANGE POLARITY, TURN OFF THE POWER, REVERSE THE

ELECTRODE AND "TO WORK" LEADS AT THE POWER SOURCE, AND POSITION THE SWITCH ON THE POWER SOURCE AND WIRE FEEDER (IF EQUIPPED) TO PROPER POLARITY. ALSO REFER TO THE FOLLOWING NOTE:

NOTE: IF LEAD #21 IS TO BE CONNECTED TO THE TERMINAL STRIP, CONNECT TO TERMINAL #21 THAT MATCHES WORK POLARITY. THIS CONNECTION MUST BE CHANGED WHENEVER THE ELECTRODE POLARITY IS CHANGED. THIS DOES NOT APPLY TO DC-400 BELOW CODE 9200 WITH POLARITY SWITCH.

N.A. WELDING CABLES MUST BE OF PROPER CAPACITY FOR THE CURRENT AND DUTY CYCLE OF IMMEDIATE AND FUTURE APPLICATIONS. N.B. EXTEND LEAD #21 USING #14 OR LARGER INSULATED WIRE PHYSICALLY SUITABLE FOR THE INSTALLATION. AN S16586-[ ]

REMOTE VOLTAGE SENSING WORK LEAD IS AVAILABLE FOR THIS PURPOSE. CONNECT IT DIRECTLY TO THE WORK PIECE, KEEPING IT ELECTRICALLY SEPARATE FROM THE WELDING WORK LEAD CIRCUIT AND CONNECTION. FOR CONVENIENCE, THIS EXTENDED LEAD #21 SHOULD BE TAPED TO THE WELDING WORK LEAD. (IF THE LENGTH OF THE WORK LEAD CIRCUIT IS SHORT, AND CONNECTIONS CAN BE EXPECTED TO BE RELIABLE, THEN CONTROL CABLE LEAD #21 DOES NOT NEED TO BE EXTENDED AND CAN BE DIRECTLY CONNECTED TO TERMINAL #21 ON THE TERMINAL STRIP. NOTE THAT THIS IS NOT THE PREFERRED CONNECTION BECAUSE IT ADDS ERROR TO THE

WIRE FEEDER VOLTMETER READING.)
N.C. TAPE UP BOLTED CONNECTION.
N.D. CONNECT THE LN-8 CONTROL CABLE GROUND LEAD TO THE FRAME TERMINAL MARKED		NEAR THE POWER SOURCE TERMINAL
STRIP. THE POWER SOURCE GROUNDING TERMINAL STRIP (MARKED	AND LOCATED NEAR THE POWER SOURCE INPUT POWER

CONNECTIONS) MUST BE PROPERLY CONNECTED TO ELECTRICAL GROUND PER THE POWER SOURCE OPERATING MANUAL.

N.E. IF USING AN OLDER LN-8 CONTROL CABLE (PRIOR TO USE OF A, B, AND C MARKING): CONNECT LEAD #75 TO #75 ON TERMINAL STRIP, CONNECT LEAD #76 TO #76 ON TERMINAL STRIP, AND CONNECT LEAD #77 TO #77 ON THE TERMINAL STRIP.

CLEVELAND, OHIO U.S.A.

LN-8