Lincoln Electric PRECISION TIG 275 SVM162-B Service Manual page 111

CONTROL PANEL (VIEWED FROM REAR)
306 1 1 301
303 2 2
3 3 304B
METER
4 4 302
5 5
6
6
(VIEWED FROM REAR)
L5
N.E.
MINIMUM
OUTPUT DISPLAY
R4
313B
MAXIMUM
STICK BALANCE LOCAL
POST FLOW
OUTPUT
R2 R1 R3
313A
TIG REMOTE
MODE
(STICK)
(AUTO BAL) (REMOTE) (THERMAL)
(P. FLOW)
+ - + - + - + - + -
R G G G
Y
B W B W B W B W B
W
ADVANCED CONTROL PANEL
(OPTIONAL)
ON TIME BACKGROUND DOWN SLOPE
FREQ
R11
R12
R9 R10
401C
4-STEP ON (PULSE ON)
- +
G B
W
2-STEP OFF
TRIGGER PULSE
PROTECTION PCB
A A
B B
C C A 4
L8
B 1
D D
J23
C 2
J22
10K A-B E E
D 3
AT MINIMUM
F F E 6
F 5
OPTIONAL
REMOTE
REMOTE
RECEPTACLE
TM
AMPTROL
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.
® ®
PRECISION TIG 275 WIRING DIAGRAM
CONTROL PC BOARD
301 1
302 2
303 3
J8
304 4
304A
5
306 6
1 W 221
J6
2 R 222
311
1
L6
312 2
313
3
314
4
315
5
316 6
J9
317
7
318
8 1
G1
319 9 2
G3
320
10 3
321
11 4
G4
322 12
5
G2
J4
6
217
7
220
8
9
218
10 216
1
W
331
6
B
2
W
332
7
B
3
W
333 J10
8
B
W 4
334
9
B
W 5 1 252
335
10 253
B 9
L7
2 269
10 270
1
3 271
N.D.
3
11 220B
2 N.C.
J7
5 6 265
4 266
J3 12
J11
6
5 262
13 263
1 2 3 4 5 6 7 8 9 10
4 213
14 214
OR
N.C.
7
201
J3 15
204
8 W209
1 2 3 4 5 6 7 8 9 10
16 R210
401 1
L10 402 2
403 3
404 4
405 5
406 6
407 7
408 8
409 9
410 10
411 11
W 12
J1
1 2 3 4 5 6 7 8 9 10
1
2
3
J2
4
5 J5A
7
6
L11
8
N.B.
L9
1
2 260
1 1
3
235
2 2 J12
5
3 3
6 236
4 4
4 233A
J5
5 5
N.A.
7 7
6
6
8
8
L4
216
X1
SCR1
L12
G1
(+)
218 POS POS
G2
SCR2
L1
217
FRONT GANG
D
B
G3
SCR3 E
F
220
C
(-)
D1
POS
SCR4 B
G4
S2
POLARITY
SWITCH
L13
FAN
C
BYPASS/
STABILIZER
260
PC BOARD
233A
GAS VALVE
SV1
235
231D
231E
E
L2
C6
S
115VAC T3 R6
T2 SPARK
GAP
284
L3
F
237
FRONT
ELECTRODE
R5 C7
ARC STARTER AS'BLY
REAR
236B
ELECTRODE
L1 (U) H1
L2 (V)
S1
POWER SWITCH
H4 H2
A
L1 (U)
C1
MID
250
C5
HIGH LOW
C4
C2
L2 (V)
COM
POWER FACTOR
GROUND RECONNECT PANEL
CAPACITORS
(OPTIONAL)
H2 (460V)
TO GROUND PER
H4 (575V)
NATIONAL
ELECTRICAL CODE
201
204
W209
R210
POLARITY SWITCH MICRO SWITCH
AC A-C, D-E, B-F OPEN
DC+ B-D, C-E, A-F, G-H CLOSED
DC- B-D, A-E, C-F, G-H CLOSED
232
REAR GANG MICRO-SWITCH
D2
CB1
S2A
NO
15A
H
A NC 233
G
4
0 1
CR4
X2
CR4
2
263
(REAR VIEW, SHOWN
IN AC POSITION)
C1,C2 POWER FACTOR CAPACITORS, 50/460 (OPTIONAL)
C4,C5 BY-PASS CAPACITORS, .0047
R7 BACKGROUND
271A C6 HIGH VOLTAGE CAPACITOR, .0015/12kV
RECTIFIER
C7 PHASE SHIFT CAPACITOR, 15uF/250VAC
R8
269 267 C8,C9 HIGH FREQ PROTECTION CAPACITORS, .22/400
271
CB1 CIRCUIT BREAKER, 15 AMP
268
CR4 12V DC RELAY COIL
262
D1 FREE WHEELING DIODE
270
263 D2 BACKGROUND DIODE
L1 OUTPUT INDUCTOR (CHOKE)
201
L2,L3 HIGH FREQ INDUCTORS
204
L4 -L13 RF TOROID CHOKES
220B
W209
R1 OUTPUT CONTROL POTENTIOMETER, 10K
220A
R210
R2 BALANCE CONTROL POTENTIOMETER, 10K
R3 POST FLOW POTENTIOMETER, 10K
R4 MIN OUTPUT POTENTIOMETER, 10K
R5 PHASE SHIFT RESISTOR, 200/100
R6 HOLDING RESISTOR, 50/225
R7 RESISTOR, 20/100
214
R8 RESISTOR, 5/50
S R9 FREQ CONTROL POTENTIOMETER, 10K
R10 ON TIME CONTROL POTENTIOMETER, 10K
213
R11 BACKGROUND POTENTIOMETER, 10K
R12 DOWN SLOPE POTENTIOMETER, 10K
TRANSFORMER
S1 INPUT POWER SWITCH
PRIMARY
TRANSFORMER
THERMOSTAT
S2 POLARITY SWITCH
SECONDARY
S2A MICROSWITCH ON POLARITY SWITCH
THERMOSTAT
SCR1,2,3,4 MAIN POWER SCR'S
SV1 GAS SOLENOID VALVE, 115VAC
SV2 WATER SOLENOID VALVE, 115VAC (OPTIONAL)
T1 MAIN TRANSFORMER
233A
T2 HIGH VOLTAGE TRANSFORMER
T3 HIGH FREQ TRANSFORMER
231A
F
LEAD COLORING CODE:
B-BLACK
G-GREEN
N.A. CONNECTION IS PIN TO PIN BETWEEN J23 AND J5.
O-ORANGE
N.B. ROBOTIC INTERFACE CONNECTION.
R-RED
N.C. REMOVE JUMPER PLUG IN J3 WHEN INSTALLING
CONNECTOR PIN NUMBERS:
TIG OPTION PC BOARD.
N.D. DISCONNECT JUMPER LEAD BETWEEN PIN 1 AND
1 2
285
PIN 2 IN J3 TO DOUBLE PREFLOW & POSTFLOW TIMES.
N.E. DISPLAY TOGGLE SHOWN IN MIN AMP POSITION.
8
N.F. PLUGS INTO LOWER SWITCHED RECEPTACLE.
WORK
VIEW OF CONNECTOR ON PC BOARD
ELECTRICAL SYMBOLS PER E1537.
575 VOLT CONNECTION
CONNECT STRAP TO
HIGH (H4) (AS SHOWN)
460 VOLT CONNECTION
CONNECT STRAP TO
LOW (H2)
251
H1
X5 267
S
63.5VAC
F
X6 268
X3 231
S
X9 231A
115VAC
S
F
18VAC 232
X4
F
X10
X1
S
X7
S 78VAC
20VAC
F
X8 F
X2
T1
115VAC
C8
C9
233B 231
8
N.F.
6
234
SV2
WATER VALVE
(OPTIONAL)
COMPONENT VALUE
UNITS:
U-BLUE
RESISTORS:
W-WHITE
OHMS/WATTS
Y-YELLOW
CAPACITORS:
MFD/VOLTS
EXAMPLE: THIS IS PIN 7
3 7
0F CONNECTOR J5
14 1 2 3 8
J5
LATCH
B
G4031-1