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G-3
ELECTRICAL DIAGRAMS
POWER MIG 255
WIRING DIAGRAM - ENTIRE MACHINE - CODE 10583 - (L10980)
G-3
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1
209
555
B
W
515
254
262
207
P.M.
208S
J9
B
T
A
C
H
D1
ASBLY
2-23-2001A
11
1
28.4V
14.2V
14.2V
116.6V
515
206A
SCI
541A
326
543
206B
353
GENERAL INFORMATION
CAVITY NUMBERING SEQUENCE
(COMPONENT SIDE OF P.C. BOARD)
1
2
1
J7
1
16
J5
9
TO
WORK
CAVITY
J13
WIRE FEED
SPEED
C1 THRU C3
31,000 MFD
50V
4
-
U
515B
555
206B
206
204S
3
2
SCR HEATSINK
ASSEMBLY
THERMOSTAT
8
7
6
5
4
3
L10980
204
G1
X7
325A
324
SCI
390
FOR SPOOL GUN OPTION
OUTPUT
CHOKE
+
X4
206B
G2
209S
H4
**
COLOR CODE:
H5
GUN
TRIGGER
POWER
TRANSFORMER
4
2
324
325
324
H3
J3
7
7
5
209R
320B
W
G1
3
4
1
2
3
4
7
CURRENT AND DUTY CYCLE OF IMMEDIATE AND
FUTURE APPLICATIONS.
5
3
-
N.B. THIS DIAGRAM SHOWS THE "ELECTRODE" POLARITY
SNUBBER
BOARD
D2
BAFFLE
MOUNTED
RECTIFIER
DIODE
BRIDGE
W
207
B
205
390
10
256
206S
205
352
X9
**
325B
DISPLAY
BOARD
X5
208R
209R
354
8
12
2
3
4
8
6
5
7
14
15
16
J12
1
2
209
208
206
354
325B
GND
320
353
252
2
1
4
2
3
13
12
10
6
5
1
2
208R
208
204S
209S
500
256
551
552
206B
251
555
X8
515B
G2
325
J11
1
1
2
3
X8
3
4
C3
+
C2C1
X2
X3
R4
INDICATES CONNECTOR CAVITY NO.
U - BLUE
R - RED
W - WHITE
B - BLACK
SECONDARY VOLTAGES SHOWN
ARE NO LOAD RMS VALUES
OUTPUT CHOKE
THERMOSTAT
++
B
206S
L1
H2
H5
5
R
H4
H1
4
2
1
3
H1
LINE
SWITCH
S1
RECONNECT
PANEL
(SHOWN CONNECTED
FOR 230V)
TO SINGLE PHASE
SUPPLY LINE
TO GROUND PER
NATIONAL ELECTRICAL
CODE
ARC
VOLTAGE
10
6
5
1
J4
4
3
14
8
252
253
5
4
2
FOR TIMER
OPTION
6
GAS
SOLENOID
4
3
2
1
261
263
204
L2
15 OHMS
100 W
R1
204B
+
208S
6
R.F. FILTER
SCR 2
254A
R3
FAN
MOTOR
392
254253
X6
X7
X7
X1
H1
H2
H1H3
H4
W
B
L2L1
**
1
6
8
9
10
J5
28.4V
J6
320
**
R.F.
CHOKE
AS’BLY
GND
4
9
10
11
12
13
1
2
3
4
5
J7
5
6
J8
515B
550
X6
NOTES:
N.A. WELDING CABLE MUST BE OF PROPER CAPACITY FOR THE
J1
2
108
(NON-LEAD SIDE OF CONNECTOR)
2
1
J10
1
7 11
J2
J4
6
7
8
3
9
1
10
5
7
8
9
260
264
267
265
14
11
J2
J1
9
8
1
2
CONTROL BOARD
6
7
8
X9
X9
X5
POWER FACTOR
ENHANCEMENT
CHOKE
251
325
1
J6
J8
J9
6
5
4
6
1
J3
NUMBERING SEQUENCE
12
7
J12
8
2
J11
J13
4
3
1
352
J10
POWER MIG 255 (230/460/575V)
515
500
551
550
552
ELECTRICAL SYMBOLS PER E1537
SCR 1
SCR HEATSINK
MOTOR/
GEARBOX
B
X6
X5
X8
CONDUCTOR STRAP AND WORK STUD.
OFF AND REVERSE LEAD CONNECTIONS AT CABLE
"POSITIVE". TO CHANGE POLARITY, TURN THE UNIT
392
W
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.