PRECISION TIG 375 WIRING DIAGRAM FOR CODE 11371
PRECISION TIG 375
CONTROL PANEL (VIEWED FROM REAR)
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| 1 | 301 |
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| 303 |
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| 2 | 304B |
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| 3 | METER |
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| 4 |
| 4 | 302 |
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| 5 |
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| 6 |
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| 6 |
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| (VIEWED FROM REAR) |
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| L5 |
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| MINIMUM |
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| DISPLAY |
| N.C. |
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| OUTPUT |
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| 301 | 1 |
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| R4 |
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| 304B |
| 302 | 2 |
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| 303 | 3 | J8 | |||
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| 321 |
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| 304 | 4 |
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| 314 | 320 |
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| 316C | 316B | 315 |
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| 304A | 5 |
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| 306 | 6 |
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| L6 |
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| 311 | 1 |
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| 313B |
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| 312 | 2 |
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| 316C |
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| 313C |
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| 316B |
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| 313 | 3 |
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| 317 | 7 |
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| MAXIMUM |
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| 314 | 4 |
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STICK |
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| BALANCE |
| LOCAL |
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| OUTPUT |
| POST FLOW |
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| 316 | 6 | J9 | |||||||||
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| R2 |
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| R1 |
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| R3 |
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| 318 | 8 |
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| 319 | 9 |
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| 320 | 10 |
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TIG |
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| 316A |
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| 313A |
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| 321 | 11 |
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319 |
| 311A | 322 |
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| 317 | 316 | 311A | 311 | 312 |
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| 316A | 318 | 313 |
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| 322 | 12 |
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| REMOTE |
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MODE |
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| 331 | W | 1 |
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| (STICK) | (AUTO BAL) | (REMOTE) |
| (P. FLOW) |
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| (THERMAL) |
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| B | 6 |
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| + |
| R - | + G | - | + |
| G | - | + | G | - |
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| Y | - |
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| 332 | W | 2 |
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| B | 7 |
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| B |
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| W | B |
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| 333 | W | 3 | J10 | |
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| B | 8 |
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| 331 |
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| 332 |
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| 333 |
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| 334 |
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| 335 |
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| 334 | W | 4 |
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| B | 9 |
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| 335 | W | 5 |
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| B | 10 |
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| L7 |
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| 2 | J7 |
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| 5 | |
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| ADVANCED CONTROL PANEL |
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| FREQ |
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| ON TIME |
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| BACKGROUND |
| DOWN SLOPE |
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| R10 |
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| R11 |
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| R12 |
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| 401C |
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| 401B | 402 | 403 |
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| 401D | 405 | 406 |
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| 408 | 409 | 410 |
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| 407 | 401D |
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| L10 |
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411 | 401A | 401B |
| ON |
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| (PULSE ON) |
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| 401 |
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| - | G | + | B |
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| TRIGGER |
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| 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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| 1 |
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| C |
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| C |
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| A |
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| D |
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| L8 |
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| B |
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| J23 | 3 |
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| C |
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| J22 | 4 |
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| E |
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10K |
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| D |
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| 5 | N.A. | 5 | J5 | ||||
AT MINIMUM |
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| E |
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| OPTIONAL |
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| F |
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| REMOTE |
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| TM |
| RECEPTACLE |
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| AMPTROL |
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| 415 VOLT CONNECTION |
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| CONNECT STRAP TO |
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| HIGH (H4) (AS SHOWN) |
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| L1 (U) |
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| CONNECT STRAP TO |
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| MID (H3) |
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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) |
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| 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 | A |
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| 51 |
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| RECONNECT PANEL SUPPORT |
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| L1 (U) |
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| 251 |
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| GND1 |
|
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| GND4 |
| GND5 | GND6 |
|
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| C1 |
| 50 |
| CB2 |
| |||||||||||
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| L1A |
| MID |
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| 250 |
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| 5A | 52 | |
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| BYPASS |
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| HIGH |
| LOW |
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| |||||
CONTROL PC BOARD |
|
| CONTROL | CASE |
| T1 |
| TO GROUND PER |
|
| CASE | 115 VAC | GAS |
| PC BOARD | L2A |
|
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| C2 |
|
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| 50A |
| ||||||||||||||||||
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| PANEL |
| FRONT |
| TRANS. |
| NATIONAL |
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| BACK | RECEPT. | VALVE |
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| L2 (V) |
| COM |
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| C3 |
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| ||||
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| FOOT |
| ELECTRIC CODE |
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| H1 |
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| GROUND | RECONNECT PANEL |
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| X5 | 267 |
| |||
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| POWER FACTOR |
| S |
| |||
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| CAPACITORS |
| 63.5VAC |
| |||
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| H2 (220V) |
| F | X6 | 268 |
| |
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| H3 (380V) |
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| |||
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| J6 | 1 | W 221 |
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| TO GROUND PER |
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| H4 (415V) |
| S | X3 | 231 |
| ||||
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| 2 | R 222 |
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| NATIONAL |
|
|
| 250 | H5 (440V) |
| 115VAC | 231A |
| ||||
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| 231B |
| ||||||||||
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| L4 |
|
| 216 |
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| ELECTRICAL CODE |
|
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|
| 201 | X9 | S |
| X4 | 232 |
| |||
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| X1 |
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| 18VAC |
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| |||||||
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| 204 | 105VAC |
| ||||||
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| L12 |
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| X1 |
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| X10 | F | F | X14 | 52 |
| ||
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| SCR1 |
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| |||||||||
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| X1 |
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| |||
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| 1 | G1 |
|
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| 218 |
|
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| POS |
| R222 W221 |
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| R210 | X7 |
| S |
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| |||
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| 4 | G4 |
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| X13 |
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| |||||
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| 2 | G3 |
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| G1 |
|
| (+) |
|
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| W209 | S | 78VAC |
|
| |||
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| 3 |
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| X1 |
|
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| 20VAC |
|
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| ||
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| J4 | 5 | G2 |
|
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| G2 |
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| X8 | F | F | X2 | 223 |
|
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| SCR2 |
|
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| |||||||||
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| 6 | 217 |
|
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| T1 |
|
| |||||
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|
| 7 | 220 |
|
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|
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| L1 |
|
| POLARITY SWITCH | MICRO SWITCH |
|
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| |||||||
|
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| 8 | 218 |
|
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| ||||||
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| 9 |
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| AC |
| OPEN |
|
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| |||
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| 10 | 216 |
|
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| 217 |
|
|
|
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|
| DC+ | CLOSED |
|
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| |||
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| FRONT GANG |
|
| DC- | CLOSED |
|
|
|
| 232 |
|
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| ||||
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| 115VAC |
|
| |||||
|
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| D |
| D2 REAR GANG |
|
|
|
| CB1 |
| C8 |
|
| |||||||
|
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|
|
| 1 |
| 252 |
|
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| B |
|
|
| S2A | NO |
|
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| C9 |
| |||||||
|
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|
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| 9 |
| 253 |
|
|
|
|
|
| G3 |
| SCR3 |
|
|
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| H |
|
|
|
| 15A |
|
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| ||||
|
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| E | A |
|
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|
| NC |
|
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| ||||||||
|
|
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|
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| 2 | 269 |
|
|
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|
| 224 |
|
|
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|
|
| 233 |
|
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| |||||||
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| F |
|
| NEG |
| G |
|
|
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|
|
| 233B |
|
| 231 |
| |||||
|
|
|
|
|
|
|
| 10 | 270 |
|
|
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| |||||||
|
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|
|
| J11 | 3 | 271 | 265 |
|
|
|
|
|
| 220 |
|
|
|
|
| C | B | X2 | 286 | 228 |
| 265A | 266A |
|
|
|
| 233A |
|
|
|
|
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| ||
|
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|
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| 6 | 220B |
|
|
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|
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| 220A |
|
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| |||||||||||
|
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| 11 |
|
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| POS |
|
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| 0 | 1 |
|
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| 50A | |||
|
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| SCR4 |
| D1 |
|
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|
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| CR4 |
| CR4 2 |
|
|
|
|
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| ||
|
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|
|
| 12 |
| 266 |
|
|
|
|
|
| G4 |
|
|
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|
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|
|
| 262 | 6 |
|
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|
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| ||||
|
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| 5 |
| 262 |
|
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|
|
| 265 | 266 |
|
| 263 |
| 234 |
|
|
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| |||
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| |||||||
|
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| 13 |
| 263 |
|
|
|
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|
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| S2 |
|
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|
|
| SV2 |
| ||
|
|
|
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|
|
| 4 |
| 213 |
|
|
|
|
|
|
|
|
|
| NEG |
|
|
| POLARITY |
| 253 |
| (REAR VIEW, SHOWN |
|
|
|
|
|
|
|
| N.D. |
| WATER VALVE | |||
|
|
|
|
|
|
|
| 14 |
| 214 |
|
|
|
|
|
|
|
|
|
|
| 252 |
| SWITCH |
|
|
|
|
|
|
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|
|
|
| (OPTIONAL) | ||||||
|
|
|
|
|
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|
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| 201 |
|
|
|
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|
|
| IN AC POSITION) |
|
|
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|
|
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| |||||||||
|
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| 7 |
|
|
|
|
| L13 |
|
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|
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| |
|
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| 15 |
| 204 |
|
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|
|
| C1,C2,C3 | POWER FACTOR CAPACITORS, 60/460 |
| |||||
|
|
|
|
|
|
|
| 8 |
| W209 |
|
|
|
|
|
|
|
|
|
|
|
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| ||||||
|
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| C4,C5 |
| |||||||
|
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|
|
| 16 |
| R210 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| R7 | 271A | BACKGROUND |
|
|
|
| C6 | HIGH VOLTAGE CAPACITOR, .0015/12kV |
| ||||||
|
|
|
|
|
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|
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|
|
|
|
|
|
|
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|
|
| C7 | PHASE SHIFT CAPACITOR, 15uF/250VAC |
| |||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 228 |
|
|
|
|
|
| RECTIFIER | R8 | 267 |
| C8,C9 | HIGH FREQ PROTECTION CAPACITORS, .22/400 | |||||||
|
|
|
|
|
|
|
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|
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|
|
|
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|
|
| 271 | 269 |
| CB1 | CIRCUIT BREAKER, 15 AMP |
| |||||||||
|
|
|
|
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| ||||||||||||
|
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|
|
| 225 |
| 225A |
|
|
|
|
|
|
|
|
|
|
|
|
| 268 |
| CB2 | CIRCUIT BREAKER, 5 AMP |
|
| |||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 224 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| CR2,CR3 | 120V AC RELAY COIL |
|
| |||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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|
|
|
|
|
|
|
|
|
|
| 262 |
|
|
|
| ||||||
|
|
| J3 |
|
|
|
|
|
|
|
|
|
| 4 |
|
| 4 | 7 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| CR4 | 12V DC RELAY COIL |
|
| ||||||
|
|
|
|
|
|
|
|
|
|
|
|
| CR2 |
|
|
|
|
|
|
|
|
|
|
|
|
|
| 270 |
|
|
| 263 |
|
| D1 | FREE WHEELING DIODE |
|
| |||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| OCV BOOST |
|
| CR3 |
|
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| D2 | BACKGROUND DIODE |
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| 201 |
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| 7 |
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| L1 | OUTPUT INDUCTOR (CHOKE) |
| ||||||||
1 | 06/3 | 4 | 5 | 6 | 7 | 8 | 9 10 |
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| RECTIFIER |
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| 204 |
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| L2,L3 | HIGH FREQ INDUCTORS |
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| 17/ |
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| 220B |
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| R14 |
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| 223 |
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| W209 |
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| L4 | RF TOROID CHOKES |
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| 20 |
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| 227 | 226 |
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| 220A |
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| R210 |
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| R1 | OUTPUT CONTROL POTENTIOMETER, 10K |
| ||||||
40102 |
| 1 |
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| PCB |
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| 220C |
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| R2 | BALANCE CONTROL POTENTIOMETER, 10K | ||||||
402 |
| 2 |
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| CR3 |
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| AC BOOST |
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| 8 | 5 |
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| R3 | POST FLOW POTENTIOMETER, 10K |
| ||||||||
403 |
| 3 |
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| B |
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| 227A |
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| R4 | MIN OUTPUT POTENTIOMETER, 10K |
| |||||||||
404 |
| 4 |
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| 256 | 3 | 9 | 258 | CR2 A | 260A |
| 231F 231E |
| 233A | 231A |
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| STABILIZER |
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| SECONDARY |
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| R5 | PHASE SHIFT RESISTOR, 200/100 |
| ||||||||||
| J1 |
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| OPTIONTIG |
| 255 |
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| 260 |
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| S1 | INPUT POWER SWITCH |
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405 |
| 5 |
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| CR3 |
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| 220C |
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| R6 | HOLDING RESISTOR, 50/225 |
| ||||||
406 |
| 6 |
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| 231C | 231B |
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| 214 | 212 |
| 212 |
|
| R8 | RESISTOR, 5/50 |
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| ||||
407 |
| 7 |
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| CR2 |
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| FAN |
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| S |
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| S1A |
| R9 | FREQ CONTROL POTENTIOMETER, 10K |
| ||||||
408 |
| 8 |
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| 3 | 9 |
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| R10 | ON TIME CONTROL POTENTIOMETER, 10K | |||||||||
409 |
| 9 |
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| 257 |
| CR3 |
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| 213 |
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| 215 | MICRO- |
| R11 | BACKGROUND POTENTIOMETER, 10K |
| ||||||
410 |
| 10 |
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| B |
| A |
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| SWITCH |
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411 |
| 11 |
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| DC BOOST |
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| C |
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| TRANSFORMER |
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| R12 | DOWN SLOPE POTENTIOMETER, 10K |
| ||||||||
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| FAN |
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| R13 | HIGH FREQ INTENSITY CONTROL, 3/25 |
| |||||||||||||
W |
| 12 |
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| BYPASS/ |
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| PRIMARY | TRANSFORMER |
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| R14 | RESISTOR, 8/300 |
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| THERMOSTAT |
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| PC BOARD |
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| THERMOSTAT |
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| S1A | MICROSWITCH ON INPUT POWER SWITCH | |||||||
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| 233A |
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| 223 |
|
| S2 | POLARITY SWITCH |
|
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| |||||
1 | 2 3 | 4 | 5 | 6 | 7 | 8 | 9 10 |
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| S2A | MICROSWITCH ON POLARITY SWITCH |
| |||||||||||||||
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| GAS VALVE |
| SV1 |
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| 231B |
|
| SCR1,2,3,4 | MAIN POWER SCR’S |
|
| ||||||||
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| J2 |
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| SV1 | GAS SOLENOID VALVE, 115VAC |
| |||||||||||||
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| 235 | 231D |
| R13 INTENSITY |
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| 233A |
|
| SV2 | WATER SOLENOID VALVE, 115VAC (OPTIONAL) | ||||||||||
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| 231E |
|
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| 231A |
|
| T1 | MAIN TRANSFORMER |
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| |||||
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| 238A 240 |
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| E |
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| F |
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| T2 | HIGH VOLTAGE TRANSFORMER |
| ||||||
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| T3 | HIGH FREQ TRANSFORMER |
| |||||||
N.B. |
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| L11 |
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| LEAD COLORING CODE: | COMPONENT VALUE | |||||||
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| UNITS: |
| |||||
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| L2 | 238 | C6 |
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| RESISTORS: | ||||
|
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| 1 | 256 |
|
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| S |
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| OHMS/WATTS | ||||||
|
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| 115VAC |
|
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| T3 |
|
| R6 |
|
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|
| CAPACITORS: | ||||||||||
|
|
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| 2 | 260 |
|
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| T2 | SPARK |
|
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| MFD/VOLTS | |||||||
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| |||||||||||
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| J12 | 3 | 235 |
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| |||
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| 5 | 255 |
|
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| GAP |
|
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|
| N.A. CONNECTION IS PIN TO PIN BETWEEN J23 AND J5. |
| CONNECTOR PIN NUMBERS: |
|
| |||||||||||
|
|
|
|
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|
|
| 6 | 236 |
|
|
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| 284 | 285 |
|
| N.B. ROBOTIC INTERFACE CONNECTION. |
|
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|
|
| EXAMPLE: THIS IS PIN 7 | ||||||||
|
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| 4 | 233A |
|
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| L3 | 239 |
|
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| 1 2 3 | 7 | |||||||||||||
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|
| N.C. DISPLAY TOGGLE SHOWN IN MIN AMP POSITION. |
| 0F CONNECTOR J5 |
| |||||||||||||||
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| F |
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| |||||||||||||||
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| 237 |
|
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|
|
| N.D. PLUGS INTO LOWER SWITCHED RECEPTACLE. |
|
| 8 |
| 14 |
| 1 2 3 | 8 | ||||||
|
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| 236 |
|
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| FRONT | WORK |
|
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| J5 |
| |||||||
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| LATCH |
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| |||||||
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| R5 | C7 |
|
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| ELECTRODE |
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| ||||
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| ARC STARTER AS’BLY |
|
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| VIEW OF CONNECTOR ON PC BOARD |
| |||||||||||||
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| ELECTRICAL SYMBOLS PER E1537. |
| ||||||||||
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| 236B |
|
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| REAR |
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| ELECTRODE |
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| |||
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| |||
A
WIRING DIAGRAM
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.