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ELECTRICAL DIAGRAMS
G-2 G-2
SQUARE WAVE TIG 275
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Wiring Diagram (L10747)
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.
B 232
R 222
(U)
(V)
L1
255
254
L1
L2
C1
RECEPTACLE
G1
G2
SCR4
246
2 STEP TIG
BRASS
115VAC
251
TERMINAL
243
248
H4
POS
D
FRONT GANG
ELECTRICAL SYMBOLS PER E1537.ELECTRICAL SYMBOLS PER E1537.
276
A
F
J6
C
C
E
J7A
ARC STARTER AS'BLY
253
N.A. CONNECTION IS PIN TO PIN BETWEEN
248
A
BB
R5
236B
208 VOLT CONNECTION
NEG
H4 (460V)
F
232B
232
211B
231B
R8
232A
211A
POLARITY SWITCH MICRO SWITCH
232C
THERMOSTAT
W 221 (+)
218
G1
G2
B 242
STABILIZER
TL1
277
Y
CONTROL PC BOARD
THERMAL LIGHT
243
4 STEP TIG
POLARITY
S2
LOW
NO
314
216
G4
217
(REAR VIEW, SHOWN
X4
X1
R
W
B
B
W
W
B
D
10K A-B
210
231
209
235
238
234
212
204
201
236
261
247
211A
232A
220A
H1
NC
CLOSED
CLOSED
OPEN
R1
277
J20
R4
276
J21
277A
H2
W 209
18VAC
X7
R 210
W 201
X8
L2
460 VOLT CONNECTION (AS SHOWN)
CONNECT A TO HIGH (H4)
TO GROUND PER
230 VOLT CONNECTION
CONNECT A TO MID (H3)
7-24-987-24-98
C
L2
SV1
235A
234A
F
S
BALANCE CONTROL
X5
L4
C5
T2
F
E
D
C
X2
X1
T1
78VAC
S
W 204
A-C, D-E, B-F
B-D, C-E, A-F, G-H
G
DC+
211
DC-
C6
277B
245
254
J2
J1
255
AT MINIMUM
D
F
J7
J8
PC BOARD
T3
GAP
SPARK
L3
REMOTE
CURRENT CONTROL
H1
SECONDARY
THERMOSTAT
CHOKE
(V)
H3
250
MID
X10
X9
18VAC
X3
212
S2A
275C
H
A
S1
H3 (230V)
H2 (208V)
H1
211
B 231
C4C3
L1
D1
R7
216
J4 AND J20 (i.e. PIN 1 TO PIN 1).
N.B. ROBOTIC INTERFACE CONNECTION.
N.C. NOT PRESENT ON EARLIER PC BOARDS.
STICK
X2
NEG
X6
23VAC
AC
115VAC
SCR3
SWITCH
E
F
ELECTRICAL CODE
NATIONAL
316
HIGH
236
FAN
TM
238
TIG
OR
AMPTROL
J5
R3
270
313
J5J5
PULSER
237
OPTIONAL
MODE SWITCH
312
275B
275C
N.B.
TOROID
THERMOSTAT
PRIMARY
A
253
252
236A
245
SV2
242
DOWNSLOPE CONTROL
POSTFLOW CONTROL
POS
B-D, A-E, C-F, G-H
IN AC POSITION)
S3
275
249
246
312
D2
(+)
SCR1
W 221
B
SCR2
315
275A
252
275
251
247
(-)
277C
220
J4
S
G3
J3
(U)
220A
G4
R 222 (-)
220
217
G3
218
C2
R2
A
CONNECT A TO LOW (H2)
F
R6
BYPASS/
E
REMOTE
L5
TOROID
260
N.A.
N.C.
L10747
7-24-98