Lincoln Electric NA-5N Service Manual page 20

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FIGURE A.12 – CONNECTION OF NA-5 (ALL) TO A SAM-650 ENGINE WELDER.
"TAP"
P P
SAM POWER SOURCE SETTINGS
TURN POWER SOURCE OFF.
FOR SUB ARC:
1. SET THE ELECTRODE POLARITY SWITCH TO THE POLARITY DESIRED FOR THE
PROCESS BEING USED.
2. SET THE TOGGLE SWITCH TO CONSTANT VOLTAGE.
3. SET THE CONSTANT VOLTAGE CONTROL TO NUMBER 7.
4. CONNECT THE TAP CABLE TO THE "300-575, MAX, SLOPE" STUD.
FOR ALL OPEN ARC PROCESSES:
1. SET THE ELECTRODE POLARITY SWITCH TO THE POLARITY DESIRED FOR THE
PROCESS BEING USED.
2. SET THE TOGGLE SWITCH TO CONSTANT VOLTAGE.
3. SET THE CONSTANT VOLTAGE CONTROL TO NUMBER 5.
4. CONNECT THE TAP CABLE TO THE "450-MAX, MED SLOPE" STUD.
N.A. REMOVE SAM PORTABLE FIELD CONTROL AND CONNECT NA-5 CONTROL CABLE.
N.B. WELDING CABLES MUST BE OF PROPER CAPACITY FOR THE CURRENT AND DUTY CYCLE OF IMMEDIATE AND FUTURE APPLICATIONS.
N.C. EXTEND LEAD #21 USING #14 OR LARGER INSULATED WIRE PHYSICALLY SUITABLE FOR THE INSTALLATION. AN S-16586- [ ] REMOTE VOLTAGE-SENSING WORK
LEAD IS AVAILABLE FOR THIS PURPOSE. CONNECT IT DIRECTLY TO THE WORK PIECE, KEEPING IT SEPARATE FROM THE WELDING WORK CABLE CONNECTION
TO THE WORK PIECE. FOR CONVENIENCE, THIS EXTENDED #21 LEAD SHOULD BE TAPED ALONG THE WELDING WORK CABLE.
N.D. TAPE UP BOLTED CONNECTION.
N.E. CONNECT THE NA-5 CONTROL CABLE GROUNDING LEAD TO THE FRAME TERMINAL MARKED
SOURCE MUST BE PROPERLY GROUNDED.
N.F. IF USING AN OLDER K-215 CONTROL CABLE: CONNECT LEAD #76 TO #75 ON TERMINAL STRIP, CONNECT LEADS #75 AND #77 TO #76 ON TERMINAL STRIP.
N.G. ON EARLIER SAM MACHINES, #1 TERMINAL WAS ALSO ON THE TERMINAL STRIP.
N.H. FOR PROPER NA-5 OPERATION, THE ELECTRODE CABLES MUST BE SNUGGED UNDER THE CLAMP BAR ON THE LEFT SIDE OF THE NA-5 CONTROL BOX.
INSTALLATION
POWER SOURCE
P
. .
NA-5
TO NA-5 INPUT
CABLE PLUG
NOTE: TO CHANGE POLARITY, TURN POWER OFF, AND
POSITION THE SWITCH ON POWER SOURCE TO
PROPER POLARITY. REFER TO NA-5
OPERATING MANUAL FOR REQUIRED
NA-5 CONTROL BOX POLARITY CONNECTIONS.
BOLT TO CABLES
FROM NA-5
WIRE CONTACT
ASSEMBLY
NA-5 SETTINGS
FOR SUB ARC:
1. RED LEAD ON VOLTAGE PC BOARD IS CONNECTED TO PIN "S".
2. WHITE LEAD ON VOLTAGE PC BOARD IS CONNECTED TO PIN "A".
FOR ALL OPEN ARC PROCESSES:
1. RED LEAD ON VOLTAGE PC BOARD IS CONNECTED TO PIN "F".
2. WHITE LEAD ON VOLTAGE PC BOARD IS CONNECTED TO PIN "A".
FOR ADDITIONAL INSTALLATION INSTRUCTIONS, SEE NA-5 OPERATING MANUAL.
NEAR THE POWER SOURCE TERMINAL STRIP. THE POWER
CLEVELAND, OHIO U.S.A.
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