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G-2
WiriNG DiaGram - cODE 11519 (L12464-1)
NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. The wiring diagram specific to your code is pasted inside one of the enclosure panels of your machine.
ELEcTricaL DiaGramS
POWER MIG 255XT (208/230V)
GENERAL INFORMATION
ELECTRICAL SYMBOLS PER E1537
CAVITY NUMBERING SEQUENCE
COLOR CODE:
(COMPONENT SIDE OF P.C. BOARD)
1
1
1
3
1
4
5
J1
J4
J6
J8
J9
INDICATES CONNECTOR CAVITY NO.
J7
4
J12
5
8
6
10
6
2
1
6
1
7
1
8
NUMBERING SEQUENCE
J3
J2
J5
(NON-LEAD SIDE OF CONNECTOR)
7
12
8
14
9
16
J10
J11
10
1
3 4
15A
403
401A
CIRCUIT
115V
BREAKER
402A
SECONDARY
VOLTAGES
SHOWN
ARE NO LOAD
RMS VALUES
H1
L2
L1
H3
H4
H2
L1
L2
TO SINGLE PHASE
SUPPLY LINE
H2
230V
208V
H1
H4
H4
H4
H4
W
B
H1
H1
H1
H1
RECONNECT
H3
PANEL
POWER
LINE
G
TRANSFORMER
SWITCH
S1
TO GROUND PER
NATIONAL ELECTRICAL
CODE
POWER FACTOR
ENHANCEMENT
CHOKE
NOTES:
N.A. WELDING CABLE MUST BE OF PROPER CAPACITY FOR THE
CURRENT AND DUTY CYCLE OF IMMEDIATE AND
FUTURE APPLICATIONS.
N.B. THIS DIAGRAM SHOWS THE "ELECTRODE" POLARITY
B - BLACK
"POSITIVE". TO CHANGE POLARITY, TURN THE UNIT
W - WHITE
OFF AND REVERSE LEAD CONNECTIONS AT CABLE
R - RED
CONDUCTOR STRAP AND WORK STUD.
U - BLUE
**
CAVITY
254A
R4
R3
1
2
256
253
254
251
252
WIRE FEED
ARC
SPEED
VOLTAGE
**
GUN
J11
TRIGGER
1
324
1
2
325
2
325
3
3
324
4
4
209R
209R
208R
208R
354
D2
BAFFLE
MOUNTED
X8
RECTIFIER
X8
DIODE
116.6V
BRIDGE
X9
X9
X5
X5
14.2V
X6
X6
208R
14.2V
208
X7
X7
X1
G1
SCR 1
28.4V
204
SCR
X2
HEATSINK
ASSEMBLY
X3
SCR 2
28.4V
R
X4
G2
G2
G2
G2
G2
G2
U
209
B
209R
D1
206
206S
205
206B
15 OHMS
C1
C2
C3
100 W
+
+
+
C1 THRU C3
204B
31,000 MFD
50V
OUTPUT
CHOKE
J10
DISPLAY
BOARD
352
352
1
GAS
SOLENOID
FAN
MOTOR
390
392
353
353
1 2 3 4 5 6 7 8
TIMER PC BOARD
265
263
262
267
264
260
261A
261
FACTORY INSTALLED
TIMER
TIMER ASSEMBLY
SWITCH
J12
1
2
R
3
515B
U
4
555
B
206B
5
SPOOL GUN/
E
6
PUSH-PULL
D
F
B
B
7
G
AMPHENOL
A
W
W
C
8
(VIEWED
B
FROM REAR)
GAS
SOLENOID
W
B
311
312
320
T
WIRE
320B
325B
DRIVE
A
MOTOR/
C
GEARBOX
SCR HEATSINK
OUTPUT CHOKE
H
ASSEMBLY
THERMOSTAT
THERMOSTAT
TO
TO
TO
WORK
WORK
WORK
207
207
G-2
CONTROL BOARD
253
1
252
2
251
3
552
4
551
5
256
6
7
J2
550
8
254
9
500
10
11
12
13
515
14
1
2
3
4
5
J4
6
7
8
9
10
206B
1
B
2
3
W
4
J1
515B
5
555
6
325
7
324
8
76
390
1
2
4
J8
2
392
3
75
4
3218
3214
1
77
77
2
76
3
75
4
3218
5
3214
6
J3
J3
4
7
8
9
2
10
311
11
312
12
1
209
208
2
206
3
206S
4
205
5
6
352
7
X9
8
J5
354
9
325B
10
GND
11
320
12
207
13
14
353
15
X8
16
G2
1
204
2
G1
3
J6
X7
4
X6
5
X5
6
GND
B
L12464-1
Power miG® 255XT
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