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PRECISION TIG 375 WIRING DIAGRAM FOR CODE 10894
CONTROL PANEL (VIEWED FROM REAR)
415 VOLT CONNECTION |
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CONNECT STRAP TO |
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HIGH (H4) (AS SHOWN) |
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L1 (U) | H1 | |
CONNECT STRAP TO | ||
MID (H3) |
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306 | 1 |
| 1 | 301 |
303 | 2 |
| 2 | 304B |
| 3 | METER | 3 | |
| 4 | 4 | 302 | |
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| 5 |
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| 6 |
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| L5 |
MINIMUM | DISPLAY | N.C. | ||
OUTPUT |
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R4
| 301 | 1 |
304B | 302 | 2 |
303 | 3 | |
304 | 4 |
J8
CONTROL PC BOARD
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| L2 (V) |
| S1 |
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| CONNECT06/17/2002 STRAP TO |
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| POWER SWITCH |
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| PROTECTIVE BONDING CIRCUIT |
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| LOW (H2) |
| 250A | 251A |
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| 220 VAC |
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| 220VAC |
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| RECEPT. |
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| H4 | H3 | H2 |
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| A |
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| RECONNECT PANEL SUPPORT |
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| L1 (U) |
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| 251 |
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GND1 | GND4 |
| GND5 | GND6 |
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| C1 | 50 | CB2 |
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| L1A |
| MID |
| 250 | 5A | 52 | ||||||||||
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| BYPASS | HIGH |
| LOW |
| C2 |
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| PC BOARD |
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| 50A |
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CONTROL | CASE | T1 | TO GROUND PER | CASE | 115 VAC | GAS | L2A |
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PANEL | FRONT | TRANS. | NATIONAL | BACK | RECEPT. | VALVE | L2 (V) |
| COM |
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| C3 |
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| FOOT | ELECTRIC CODE |
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| H1 |
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| GROUND | RECONNECT PANEL |
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| S X5 | 267 |
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| POWER FACTOR |
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| CAPACITORS |
| 63.5VAC |
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| H2 (220V) |
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STICK
TIG
MODE
316C
319
BALANCE
R2
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311A | 322 |
313C
314 | 320 |
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| 321 | 316C | 316B | 315 |
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| 316B |
| 313B |
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LOCAL | MAXIMUM | ||||||
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| OUTPUT | ||||
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| R1 |
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| 317 | 316 | 316A | 311A | 311 | 312 |
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REMOTE |
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POST FLOW
R3
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316A | 318 | 313 |
304A | 5 |
306 | 6 |
311
1
L6 312
2
313
3
314
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315
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316
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317
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318 8
319
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320
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321
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322
12
J9
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| H3 (380V) |
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| X6 | 268 | |
J6 | 1 | W 221 |
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| TO GROUND PER | 250 | H4 (415V) |
| S | X3 | 231 | ||
2 | R 222 |
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| NATIONAL | H5 (440V) |
| 115VAC | 231A | |||||
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| L4 |
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| ELECTRICAL CODE |
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| X9 | S | 231B | |||
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| 201 |
| X4 | 232 | |||||
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| 216 | X1 |
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| 18VAC |
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| L12 |
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| 204 | F | 105VAC |
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| X10 | F | X14 | 52 | ||
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| X1 |
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| X1 |
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| 1 | G1 | G1 | R222 W221 |
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| 2 | G3 | (+) |
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| W209 | X7 | S | 78VAC |
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| 3 |
| 218 | X1 |
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| 4 | G4 | POS |
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| R210 | F |
| X13 |
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| G2 |
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| X8 | F | X2 |
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J4 | 5 | G2 | SCR2 |
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| 223 | ||||
6 | 217 |
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| T1 |
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| 7 | 220 |
| L1 | POLARITY SWITCH MICRO SWITCH |
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| 8 | 218 |
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| 9 |
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| AC | OPEN |
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| 10 | 216 | 217 |
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| DC+ | CLOSED |
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| FRONT GANG | DC- | CLOSED |
| 232 |
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D
D2
REAR GANG |
CB1 C8
115VAC
PRECISION
| (STICK) | (AUTO BAL) | (REMOTE) |
| (P. FLOW) | (THERMAL) | ||||
+ R - | + G - | + G - | + G - | + | Y | - | ||||
B | W | B | W | B | W | B | W | B |
| W |
| 331 |
| 332 |
| 333 |
| 334 |
| 335 |
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331 | W | 1 | |
B | 6 | ||
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332 | W | 2 | |
B | 7 | ||
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333 | W | 3 | |
B | 8 | ||
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334 | W | 4 | |
B | 9 | ||
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335 | W | 5 | |
B | 10 | ||
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L7
1
3
2
J10
| 1 | 252 | G3 |
| 9 | 253 | |
| 2 | 269 |
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| 10 | 270 | 220 |
| 3 | 271 | |
| 11 | 220B | 220A |
J11 | 6 | 265 | |
| 12 | 266 | G4 |
| 5 | 262 | |
| 13 | 263 |
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| 4 | 213 |
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| 14 | 214 |
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| 7 | 201 | L13 |
| 15 | 204 |
| B |
SCR3 | 224 |
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SCR4 D1 | |
| NEG |
C
POS
252
E A
F
B X2
S2
POLARITY
SWITCH
253
NEG
286
H | S2A | NO |
| NC | |
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G |
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228 | 265A | 266A |
| 265 | 266 |
(REAR VIEW, SHOWN |
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IN AC POSITION) |
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0 1
CR4
263
262
15A
| 233 |
| 233B |
4 | 8 |
233A |
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CR4 2 | 6 |
| 234 |
C9
231
50A
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| SV2 | |
N.D. |
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| WATER VALVE | ||
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TIG
| ADVANCED CONTROL PANEL |
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FREQ | ON TIME | BACKGROUND | DOWN SLOPE |
R9 | R10 | R11 | R12 |
5
4
6
J7
8 | W209 |
16 | R210 |
| 225 |
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| R7 | 271A | BACKGROUND |
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| 228 |
| RECTIFIER | R8 |
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| 271 | 269 | 267 | ||
| 225A |
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| 268 | ||
224 |
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4 | 7 |
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C1,C2,C3 | POWER FACTOR CAPACITORS, 60/460 |
C4,C5 | |
C6 | HIGH VOLTAGE CAPACITOR, .0015/12kV |
C7 | PHASE SHIFT CAPACITOR, 15uF/250VAC |
C8,C9 | HIGH FREQ PROTECTION CAPACITORS, .22/400 |
CB1 | CIRCUIT BREAKER, 15 AMP |
CB2 | CIRCUIT BREAKER, 5 AMP |
CR2,CR3 | 120V AC RELAY COIL |
CR4 | 12V DC RELAY COIL |
375
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401B | 402 | 403 |
| 401D | 405 | 406 | 408 | 409 | 410 |
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| 407 | 401D |
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| L10 |
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401A | 401B | ON |
| 404 | (PULSE ON) |
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411 |
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TRIGGER |
| PULSE |
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| 4 | J5A |
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| L9 | 8 |
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| PROTECTION PCB |
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| A |
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| B |
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| L8 |
| B | 1 |
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| J23 | 3 |
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| J22 | 4 |
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| E |
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10K |
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| D | 3 |
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| 5 | N.A. | 5 | J5 | ||
AT MINIMUM |
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| E | 6 |
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OPTIONAL |
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| REMOTE |
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REMOTE |
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| TM |
| RECEPTACLE |
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AMPTROL |
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| J3 |
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1 | 06/3 | 4 | 5 | 6 | 7 | 8 | 9 10 | |
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| 20 |
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40102 |
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403 |
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402 |
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404 |
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| OPTION | |
409 |
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405 |
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406 |
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408 |
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410 |
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W |
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411 |
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1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 10 |
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N.B.
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| CR2 | OCV BOOST | |
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| RECTIFIER | ||
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| 227 | R14 | 226 |
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| CR3 |
| AC BOOST | 227A | |||
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| 3 |
| B | CR2 A | ||||
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| 9 | 258 | ||||||
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| 256 |
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| 231C | 231B |
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| CR2 |
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| FAN | ||
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| 3 | 9 | 257 |
| CR3 |
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| B | 260A |
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| A |
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| 255 |
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| DC BOOST | FAN | |||
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| 260 |
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| 233A |
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| GAS VALVE | SV1 | |||
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| 235 | ||
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| 231D |
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| L11 |
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| 1 | 256 |
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| 115VAC | S |
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| 2 | 260 |
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J12 | 3 | 235 |
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| 5 | 255 |
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| 6 | 236 |
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| 4 | 233A |
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| 237 | F |
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| 236 | R5 | C7 |
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| 236B |
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| CR3 |
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| 270 |
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| 220B |
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| W209 | |
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| 220A |
| R210 | |
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| 220C |
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8 | 5 |
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CR3 |
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231F 231E |
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| MICRO- |
| 233A | 231A | C |
| 213 |
| 215 SWITCH | |
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| TRANSFORMER |
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| BYPASS/ | PRIMARY | TRANSFORMER |
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| THERMOSTAT |
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| STABILIZER |
| SECONDARY |
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| THERMOSTAT |
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| PC BOARD |
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| 223 | |
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| 231B | ||
| R13 INTENSITY |
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| 233A | ||
| 238A |
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| E | F |
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| 231A |
| 240 |
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L2 | 238 | C6 |
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SPARK |
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GAP |
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| N.A. CONNECTION IS PIN TO PIN BETWEEN J23 AND J5. | ||
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| 284 | 285 | |||
L3 | 239 |
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| N.B. ROBOTIC INTERFACE CONNECTION. |
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| N.C. DISPLAY TOGGLE SHOWN IN MIN AMP POSITION. | ||||
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| N.D. PLUGS INTO LOWER SWITCHED RECEPTACLE. | ||
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| FRONT | WORK |
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| ELECTRODE |
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ARC STARTER AS’BLY |
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| REAR |
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| ELECTRODE |
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| D1 | FREE WHEELING DIODE |
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| D2 | BACKGROUND DIODE |
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| L1 | OUTPUT INDUCTOR (CHOKE) |
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| L2,L3 | HIGH FREQ INDUCTORS |
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| L4 | RF TOROID CHOKES |
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| R1 | OUTPUT CONTROL POTENTIOMETER, 10K |
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| R2 | BALANCE CONTROL POTENTIOMETER, 10K | ||||||||||||
| R3 | POST FLOW POTENTIOMETER, 10K |
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| R4 | MIN OUTPUT POTENTIOMETER, 10K |
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| R5 | PHASE SHIFT RESISTOR, 200/100 |
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| R6 | HOLDING RESISTOR, 50/225 |
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| R7 | RESISTOR, 20/100 |
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| R8 | RESISTOR, 5/50 |
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| R9 | FREQ CONTROL POTENTIOMETER, 10K |
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| R10 | ON TIME CONTROL POTENTIOMETER, 10K | ||||||||||||
| R11 | BACKGROUND POTENTIOMETER, 10K |
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| R12 | DOWN SLOPE POTENTIOMETER, 10K |
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| R13 | HIGH FREQ INTENSITY CONTROL, 3/25 |
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| R14 | RESISTOR, 8/300 |
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| S1 | INPUT POWER SWITCH |
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| S1A | MICROSWITCH ON INPUT POWER SWITCH | ||||||||||||
| S2 | POLARITY SWITCH |
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| S2A | MICROSWITCH ON POLARITY SWITCH |
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| SCR1,2,3,4 | MAIN POWER SCR’S |
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| SV1 | GAS SOLENOID VALVE, 115VAC |
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| SV2 | WATER SOLENOID VALVE, 115VAC (OPTIONAL) | ||||||||||||
| T1 | MAIN TRANSFORMER |
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| T2 | HIGH VOLTAGE TRANSFORMER |
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| T3 | HIGH FREQ TRANSFORMER |
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| LEAD COLORING CODE: | COMPONENT VALUE | ||||||||||||
| UNITS: |
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| RESISTORS: | |||||||||||
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| OHMS/WATTS | |||||||||||
| CAPACITORS: | |||||||||||||
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| MFD/VOLTS | ||||||||
| CONNECTOR PIN NUMBERS: |
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1 2 3 |
| 7 |
| EXAMPLE: THIS IS PIN 7 | ||||||||||
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| 0F CONNECTOR J5 |
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8 |
| J5 | 14 |
| 1 2 3 |
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| 8 |
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| LATCH |
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VIEW OF CONNECTOR ON PC BOARD ELECTRICAL SYMBOLS PER E1537.
A
WIRING DIAGRAM ENHANCED DIAGRAMS
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.