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2
1
2
RECTIFIER
9D
C2
R7
9A
9A
N.F.
CONTROL PANEL
J11, J14
S
F
9
H5
402, 404
ON
OFF
H1
R
V
C
H6
12B
BOTTOM
51
WIRING DIAGRAM V300-PRO CODE 10257 (575V)
SHUNT
R8
250
L3
L1
C1
TP2
9D
S1
1, 8
POWER
J12
401, 403
12B
12B
25
J13
G
25W
R = RED
R4
W = WHITE
1
3
2
1
J11
J9
4
5
2
6
3
F
D13
317
6
9A
J16
5
14
315
316
51
LAYOUT
504
4
H3
6
J5, J16
32
32
227
213
214
INSIDE
S
TOP
+
S
TOP
5
2
W
303
3
8
J6
1
18V
285
AUX
TOP
OUTSIDE
S
BOTTOM
F
226
S
F
4
F
S
TRANSFORMER
MAIN
L2
CHOKE
F
S
53
4
1
52
36
52
53
53
14
REMOTE
214
SWITCH
POLARITY
WELDING
WIRE FEEDER
S6
42A
+
5
W
501
R
7
317
316
9D
6
314
R
W
POWER
R
BOARD
8
5
8
402, 404
307
+
T2
+
CURRENT
J2
M
J2, J8
S4
OUTPUT TERMINAL
SWITCH
25W
CV FCAW
+
25
+
Y
10K
Y
R5
9B
N.F.
912
2W
10K
R12
REMOTE
275A
LOCAL
2W
275B
207
77A
275C
276
150 5W
204B
228
212C
208
203
76
77B
204C
204A
220
229
R11
285
MODE SWITCH
S2
/INDUCTANCE
LOCAL/REMOTE
N
SPARE
GND
218
B
GND
275C
227
226
275B
CONTROL
4
77A
75
218
276
208
207
228
229
275D
301
305
4
D3
S
1
12
(V300-I ONLY)
210
211B
1
J1, J7
J9, J10, J12
J13, J15
6
J3
302
J7
4
309
224
TOP
AUX
H1
42
W
B
N.A.
H5
H1
2
H3
75
MIN
G
75
76
24V
F
76
E
77
31
212C
CR1
+ ARC
400A
C6
RIGHT
C9
BOARD
S
W
R
215
4
5
203
310
S5
503A
1
229
1
4
J14
3
2
CW (MAX)
215
CW (MAX)
306
212A
212B
J5
223B
7
12
210
13
J1
275A
2
309
J4
J6
COLOR CODE:
B = BLACK
1. FOR MACHINES SUPPLIED WITH INPUT CABLE (V300-PRO)
Y = YELLOW
FOR SINGLE PHASE INPUT: CONNECT GREEN LEAD TO GROUND PER NATIONAL ELECTRIC CODE.
CONNECT BLACK & WHITE LEADS TO SUPPLY CIRCUIT.
WRAP RED LEAD WITH TAPE TO PROVIDE 600V. INSULATION.
FOR THREE PHASE INPUT: CONNECT GREEN LEAD TO GROUND PER NATIONAL ELECTRIC CODE.
CONNECT BLACK, RED & WHITE LEADS TO SUPPLY CIRCUIT.
2. FOR MACHINES NOT SUPPLIED WITH INPUT CABLE (V300-I)
FOR SINGLE PHASE INPUT: GROUND MACHINE PER NATIONAL AND LOCAL ELECTRICAL CODES.
LEFT
CONNECT TERMINALS U & W TO SUPPLY CIRCUIT.
FOR THREE PHASE INPUT: GROUND MACHINE PER NATIONAL AND LOCAL ELECTRICAL CODES.
25
25W
42A
2AMP
H1
6AMP
212
212212
I
C
D
H
42
81
42
VAC
S2
MODE
SWITCH
R11
OUTPUT
CONTROL
S3
R12
S4
SWITCH
SWITCH
CONTROL
TERMINAL
THERMAL
OVERLOAD
INDICATOR
SWITCH
FUNCTION
METER
REMOTE
3
503
313
6
H6
H5
0V
FAN
212D
2
THERMOSTAT
A
V
310
D1B
5
6
8
F
4
301
8
2
4
223A
303
304
304
213
G = GREEN
2
FEEDER
NOTES:
N.A.
3
2
LOCAL/REMOTE
R11
F
501
2
2
3
4
PROTECTION
R1
B
+
912
25W
R9
D2
D1A
C15
L10191
CONTROL
ARC FORCE/INDUCTANCE
R12
SWITCH
METER FUNCTION
(V300-I ONLY)
INDICATOR
OVERLOAD
THERMAL
OUTPUT CONTROL
N.F. C1, C2, C14, C15 CAPACITORS ARE A MATCHED SET.
N.C. WIRE FEEDERS REQUIRING 24VAC, USE PINS "N" & "I".
COMPONENTS OR CIRCUITRY HAVING A COMMON CODE NUMBER.
THE INTERCHANGEABILITY OF A COMPLETE BOARD, THIS DIAGRAM MAY NOT SHOW THE EXACT
N.B. SINCE COMPONENTS OR CIRCUITRY OF A PRINTED CIRCUIT BOARD MAY CHANGE WITHOUT AFFECTING
CONNECT TERMINALS U, V & W TO SUPPLY CIRCUIT.
212D
212B
211B
211A
8
302
275D
CV GMAW
5
3
502
4
12
11
211A
2
3
9
6
6
Y
14
8
4
7
11
Y
10
5
Y
503
9
503A
2
1
TP6
3
3
C5
4
204C
L4
42V
32A
110V
25W
313
311
306
275F
4
4, 5
25W
BOARD
13,15
13
C14
(LEFT)
401, 403
DRIVER
BOARD
1
9D
L5
N.C.
L
82
230V
4
220-
TRIGGER
5
4,5
I
10K
ON
223A
502
FAN
S3
MOTOR
SWITCH
CB2
J
575V
32A
A
CB1
212A
52
14
J15
51
J8
H5
1
1
INPUT
314
2
3
12A
7
R
8
12
13
14
229
SWITCH
BOARD
A
F -
H3
OUTPUT
OUTPUT
ARC FORCE
3
2
1
220
204B
204A
F
1
INSIDE
1, 8
286
CHOKE
1
BOARD
305
5
308
-
1
CC SOFT
BOTTOM
S
206
-
J10
ELECTRICAL SYMBOLS PER E1537
(VIEWED FROM COMPONENT SIDE OF BOARD)
CONNECTOR CAVITY NUMBERING SEQUENCE
311
RECEPTACLE
TRANSFORMER
CONTROL
AUXILIARY
T1
REMOTE
WIRE
-
21
4
3
52
25
10K
TP1
TP3
212
VAC
21
223B
PANEL
3
METER
4
5
6
5
- ARC
6
TP4
THERMOSTAT
W
J4
2
7
275F
7
504
1
CONTROL
1
3
9
10
224
PER
CC GTAW
CC CRISP
52315
INPUT
TRANSFORMER
I
F
BOTTOM
9
206
U
OUTSIDE
W
D +
308
307
229
S5
TP5
K
41
H1
77B
(RIGHT)
T3
110/115
13,15
15
1
W
R
12
SWITCH
R6
25W
1
J3
10
B
NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. The specific diagram for a particular code is pasted inside
the machine on one of the enclosure panels. If the diagram is illegible, write to the Service Department for a replacement. Give the equipment code number..
MAR97