A-15, Installation – Lincoln Electric NA-5S User Manual
Page 22
INSTALLATION
A-15
A-15
NA-5
FIGURE A.14 – CONNECTION OF NA-5 TO DC-400 OR CV-400.
THE DIAGRAM SHOWS ELECTRODE CONNECTED POSITIVE. TO CHANGE POLARITY, TURN POWER OFF, REVERSE THE ELECTRODE AND WORK LEADS AT THE
POWER SOURCE AND POSITION THE SWITCH ON POWER SOURCE (IF EQUIPPED), TO PROPER POLARITY. REFER TO NA-5 OPERATING MANUAL FOR REQUIRED
NA-5 CONTROL BOX POLARITY CONNECTIONS. ALSO REFER TO NOTE N.H.
FOR ADDITIONAL INSTALLATION INSTRUCTIONS, SEE NA-5 OPERATING MANUAL.
* 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 AWG OR LARGER INSULATED WIRE PHYSICALLY SUITABLE FOR THE INSTALLATION. AN S-16586- [LENGTH] 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 #21 LEAD SHOULD BE TAPED TO THE WELDING
WORK LEAD. (IF THE LENGTH OF 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 NA-5 VOLTMETER READING.)
N.C. TAPE UP BOLTED CONNECTION.
N.D. CONNECT THE CONTROL CABLE GROUND LEAD TO THE FRAME TERMINAL MARKED NEAR THE POWER SOURCE TERMINAL STRIP. THE POWER
SOURCE GROUNDING TERMINAL (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. THE JUMPERS ON THE NA-5 VOLTAGE BOARD MUST BE CONNECTED AS FOLLOWS: CONNECT RED JUMPER TO PIN "S". CONNECT WHITE JUMPER TO PIN "B".
WHEN USING NA-5 CONTROLS ABOVE CODE 8300 WITHOUT THE OPTIONAL DC-400 DIODE KIT OR CV-400, CVI-500 DIODE OPTIONS:
THE NA-5 INCH DOWN BUTTON WILL NOT OPERATE UNLESS A JUMPER IS CONNECTED BETWEEN THE TWO TAB TERMINALS, LABELED "AUTO",
LOCATED ABOVE THE TRANSFORMER ON THE NA-5 VOLTAGE PC BOARD. THIS JUMPER, HOWEVER, WILL DISABLE THE COLD STARTING/AUTO STOP
FEATURE OF THE NA-5, PERMITTING ONLY HOT STARTING TECHNIQUES TO BE USED.
N.G. 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.
N.H.* IF LEAD #21 IS TO BE CONNECTED TO THE TERMINAL STRIP, CONNECT TO THE #21 TERMINAL THAT MATCHES WORK POLARITY. THIS CONNECTION MUST
BE CHANGED WHENEVERTHE ELECTRODE POLARITY IS CHANGED.
POWER SOURCE
TO NA-5 INPUT CABLE PLUG
CONTROL
CABLE
BOLT TO CABLES FROM NA-5
WIRE CONTACT ASSEMBLY
CONNECT TO WORK
N.E.
N.D. AND N.H.
N.B. AND N.C.
N.H.
N.A.
NEGATIVE
POSITIVE
N.D.
C
B
A
32
31
2
4
GND
21
CLEVELAND, OHIO U.S.A.