Lincoln Electric SVM132-A service manual LN-8 for Opposite Polarity Operation, Shock Can Kill

Return to Section TOC

Return to Section TOC

Return to Section TOC

Return to Section TOC

Return to Master TOC

Return to Master TOC

Return to Master TOC

Return to Master TOC

A-13

INSTALLATION

A-13

FIGURE A.9 – K318 DUAL PROCESS CONTACTOR KIT DC-400, CV-400 AND CVI-500 CONNECTION TO

LN-8 FOR OPPOSITE POLARITY OPERATION

WARNING

TURN OFF INPUT POWER

TO THE WELDING POWER

SOURCE USING THE

DISCONNECT SWITCH

BEFORE WORKING

ELECTRIC￿

ON THIS EQUIPMENT.

SHOCK￿

CAN KILL

N.B.B.

N.B.B.

N.A.

TO WORK

21A

21B

DUAL PROCESS

CONTACTOR

DC-400

WELDING LEAD STUD ON

BACK OF CONTACTOR KIT

N.C.

GND

GND

21 4 2 31

32

75 76 77

81

80

A

B

A

75

75

A

77

B

76

76

B

76

C

77

77

C

75

21

21

4

N.A.A.

GND

4

4

4

4

2

31

2

2

2

2

32

32

32

32

32

N.F.

31

31

31

31

A

B

TO NEGATIVE OUTPUT

TO POSITIVE OUTPUT

N.B.

N.B.

STUD ON POWER

STUD ON POWER

SOURCE

SOURCE

WELDER

N.E.

CONTROL

CABLE

N.D.

WIRE FEEDER

ELECTRODE

WIRE FEEDER

N.A.

CONTROL

CABLES

CONTROL

CABLE

CABLE

N.A.

N.A.

TO "A" WIRE FEEDER

TO "B" WIRE FEEDER

ELECTRODE NEGATIVE

ELECTRODE POSITIVE

FOR 50 HZ OPERATION, DISCONNECT BOTH BROWN LEADS FROM TERMINAL 31B AND TAPE UP EACH LEAD. UNTAPE BOTH RED LEADS AND CONNECT TO 31B.

N.A.A. CONNECT THE LN-8 CONTROL CABLE GROUND LEAD TO THE FRAME MARKED NEAR THE POWER SOURCE TERMINAL STRIP OR TO AN UNPAINTED FRAME SCREW. THE POWER SOURCE MUST BE PROPERLY GROUNDED.

N.B.B. EXTEND LEAD #21A AND #21B 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, THESE EXTENDED #21A AND #21B LEADS SHOULD BE TAPED TO THE WELDING WORK LEAD. EACH LEAD MUST BE CONNECTED DIRECTLY TO THE WORK AND LEADS MUST NOT BE CONNECTED TOGETHER.

N.A. WELDING CABLES MUST BE OF PROPER CAPACITY FOR THE CURRENT AND DUTY CYCLE OF IMMEDIATE AND FUTURE APPLICATIONS. N.B. BOLT AND TAPE CONNECTIONS.

N.C. TAPE UP SEPARATELY.

N.D. PUT TRANSFER SWITCH IN "OPPOSITE POLARITY ON FEEDERS" POSITION.

N.E. MODE SWITCHES ON CONTACTOR KIT ARE NOT FUNCTIONAL WHEN USED WITH THE POWER SOURCE.

N.F. TO MAKE "A" FEEDER POSITIVE POLARITY AND "B" FEEDER NEGATIVE POLARITY, REVERSE ELECTRODE CABLES CONNECTED TO POWER SOURCE OUTPUT STUDS.

CLEVELAND, OHIO U.S.A.

LN-8