A-11, Installation – Lincoln Electric NA-5S User Manual
Page 18
INSTALLATION
A-11
A-11
NA-5
FIGURE A.10 – CONNECTION OF NA-5 (ALL) TO A R3S-400, -600, OR -800
WITH NO LINE VOLTAGE COMPENSATOR (OBSOLETE).
R3S POWER SOURCE SETTINGS
TURN POWER SOURCE OFF.
FOR ALL PROCESSES:
1. CONNECT ELECTRODE CABLE TO TERMINAL OF DESIRED POLARITY.
2. SET THE POLARITY SWITCH TO THE SAME POLARITY AS THE ELECTRODE
CABLE CONNECTION.
3. SET TOGGLE SWITCH TO REMOTE.
4. INSTALL VOLTAGE TRIANGLE IN A POSITION AS CLOSE AS POSSIBLE TO
THE DESIRED ARC VOLTAGE.
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".
NOTE: ABOVE DIAGRAM SHOWS ELECTRODE CONNECTED POSITIVE. TO CHANGE POLARITY, TURN POWER OFF, REVERSE THE ELECTRODE AND WORK CABLES AT THE
POWER SOURCE AND POSITION THE SWITCH ON POWER SOURCE TO PROPER POLARITY. REFER TO NA-5 OPERATING MANUAL FOR REQUIRED NA-5 CONTROL
BOX POLARITY CONNECTIONS.
N.A. ADD JUMPER FROM #75 TO #76, USING INSULATED COPPER WIRE.
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 , NEAR THE POWER SOURCE TERMINAL STRIP. THE POWER SOURCE
MUST BE PROPERLY GROUNDED.
N.F. IF USING AN OLDER K-215 CONTROL CABLE: CONNECT LEAD #75 TO #75 ON TERMINAL STRIP, CONNECT LEAD #76 TO #77 ON TERMINAL STRIP, CONNECT
LEAD #77 TO #76 ON TERMINAL STRIP, AND ADD JUMPER PER N.A.
N.G. ON EARLIER R3S MACHINES, #67 AND #1 TERMINALS WERE ALSO ON THE TERMINAL STRIP.
N.H. THE UPPER TERMINAL STRIP (#75, #76, #77) WAS NOT PRESENT ON EARLY R3S MACHINES. THOSE MACHINES ARE NOT COMPATIBLE WITH THE NA-5 SINCE THERE
CAN BE NO ADJUSTMENT OF VOLTAGE BY THE NA-5.
N.J. 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.
FOR ADDITIONAL INSTALLATION INSTRUCTIONS, SEE NA-5 OPERATING MANUAL.
B
B
B
POSITIVE
CLEVELAND, OHIO U.S.A.