Precision tig 275 wiring diagram, Electrical diagrams, Precision tig 275 – Lincoln Electric PRECISION TIG 275 SVM162-B User Manual
Page 110
ELECTRICAL DIAGRAMS
G-2
PRECISION TIG 275
®
®
WIRING DIAGRAM - ENTIRE MACHINE - CODE 10806 (G4031)
RECEPTACLE
C
A
B
B
CONTROL PC BOARD
10K A-B
F
E
D
C
AT MINIMUM
D
F
REMOTE
TM
AMPTROL
OPTIONAL
A
E
REMOTE
A
B
C
D
E
F
+
-
G
R
G
Y
5
4
3
2
1
(STICK)
(AUTO BAL)
(REMOTE)
(P. FLOW)
(THERMAL)
8
4
1
2
3
6
5
6
B
W
+
-
B
W
+
-
B
W
+
-
B
W
+
-
G
33
1
6
5
4
3
2
1
2
3
4
5
7
1
5
4
3
2
1
6
6
301
303
304B
306
302
METER
(VIEWED FROM REAR)
8
7
6
5
4
3
2
1
J23
J22
301
302
303
304
304A
306
30
4B
321
322
313
314
315
316
317
318
319
320
311
312
J8
J9
5
9
8
3
7
2
1
6
4
331
10
411
W
403
404
405
406
407
408
409
410
401
402
T
IG
O
P
T
IO
N
P
C
B
(O
P
T
IO
N
A
L)
8
7
6
5
4
3
2
1
220
G1
217
2
1
W 221
R 222
11
3
10
2
269
270
271
220B
6
5
4
3
2
1
233A
235
16
8
15
7
14
4
13
5
12
6
9
1
J11
L8
J10
J1
J5
J12
J4
J6
N.A.
8
6
2
3
4
5
7
1
J5A
N.B.
260
236
5
2
1
3
J7
PROTECTION PCB
R12
R11
R10
G
R9
FREQ
ON TIME
DOWN SLOPE
BACKGROUND
40
1D
40
2
40
3
40
5
40
6
40
8
40
9
41
0
40
1B
(PULSE ON)
+
-
ADVANCED CONTROL PANEL
(OPTIONAL)
401C
40
1D
W
B
VIEW OF CONNECTOR ON PC BOARD
ELECTRICAL SYMBOLS PER E1537.
OHMS/WATTS
COMPONENT VALUE
UNITS:
RESISTORS:
MFD/VOLTS
CAPACITORS:
8
LATCH
0F CONNECTOR J5
EXAMPLE: THIS IS PIN 7
3
2
LEAD COLORING CODE:
B-BLACK
2
1
8
G-GREEN
O-ORANGE
R-RED
CONNECTOR PIN NUMBERS:
7
14
U-BLUE
Y-YELLOW
W-WHITE
1
3
J5
460 VOLT CONNECTION
CONNECT STRAP TO
HIGH (H4) (AS SHOWN)
232
H4 (460V)
F
W209
18VAC
X7
R210
201
X8
F
S
X5
X2
X1
T1
78VAC
S
204
115VAC
X9
X10
20VAC
X3
H3 (230V)
H2 (208V)
X6
26
2
263
63.5VAC
267
268
CR4
231A
231
115VAC
X4
CB1
15A
232
231
F
S
F
S
F
S
CR4
233B
234
4
8
2
6
233
0
1
23
3A
C8
C9
214
213
R8
267
233A
231A
268
269
220B
271
270
220A
262
263
201
204
W209
R210
115VAC
ARC STARTER AS'BLY
R5
SV1
GAS VALVE
L3
C6
T2
C7
T3
GAP
SPARK
L2
237
S
F
R6
BYPASS/
STABILIZER
PC BOARD
FAN
260
235
233A
23
9
23
8
284
285
236B
23
6
231D
231E
23
1A
23
1E
23
3A
POS
D
FRONT GANG
N
E
G
POLARITY SWITCH MICRO SWITCH
POLARITY
S2
NO
(REAR VIEW, SHOWN
X2
NC
MICRO-SWITCH
CLOSED
CLOSED
OPEN
TO GROUND PER
C
A-C, D-E, B-F
B-D, C-E, A-F, G-H
G
DC+
REAR GANG
DC-
26
6A
S2A
26
5A
H
A
L1
AC
SWITCH
E
F
ELECTRICAL CODE
NATIONAL
25
3
POS
B-D, A-E, C-F, G-H
IN AC POSITION)
D2
B
25
2
R7
28
6
W
22
1
R
22
2
271A
BACKGROUND
RECTIFIER
26
5
26
6
G4
G3
G2
213
214
201
204
W209
R210
262
263
265
266
252
253
G1
G2
217
216
220
G3
22
0A
G4
218
SCR4
D1
X1
N
E
G
SCR3
POS
(+)
SCR1
SCR2
25
2
(-)
B
G4031
B
PRECISION TIG 275 WIRING DIAGRAM
L9
L10
L7
L6
L5
L12
L4
L13
L11
J3
N.D.
N.C.
L1 (U)
L2 (V)
C1
RECONNECT PANEL
H4
H2
H1
H3
250
S1
POWER SWITCH
H1
C5
C4
CAPACITORS
(OPTIONAL)
POWER FACTOR
C2
A
GROUND
HIGH
MID
LOW
COM
251
2
1
3 4 5 6
8 9 10
7
2
1
3 4 5 6
8 9 10
7
J2
J3
2
1
3 4 5 6
8 9 10
7
OR
N.C.
230 VOLT CONNECTION
CONNECT STRAP TO
MID (H3)
208 VOLT CONNECTION
CONNECT STRAP TO
LOW (H2)
40
7
L1 (U)
L2 (V)
FRONT
ELECTRODE
REAR
ELECTRODE
WORK
TRANSFORMER
PRIMARY
THERMOSTAT
TRANSFORMER
SECONDARY
THERMOSTAT
PULSE
2-STEP
40
1
40
4
ON
OFF
41
1
40
1A
4-STEP
TRIGGER
40
1B
R4
R1
R2
BALANCE
MINIMUM
OUTPUT
MAXIMUM
OUTPUT
MODE
REMOTE
R3
POST FLOW
31
9
32
2
31
6C
31
3C
31
6B
31
5
31
6
31
7
31
1
31
2
31
3
31
8
313B
TIG
STICK
32
1
DISPLAY
31
4
32
0
LOCAL
31
1A
31
6A
31
6C
31
1A
31
6A
31
6B
F
C
S
E
N.E.
CONTROL PANEL (VIEWED FROM REAR)
33
2
33
3
B
W
33
4
33
5
B
W
332
B
W
333
B
W
334
B
W
335
B
W
12
11
10
9
8
6
5
4
3
1
2
7
12
11
10
9
8
6
5
4
3
1
2
7
6
4
10
9
216
218
C1,C2
POWER FACTOR CAPACITORS, 50/460 (OPTIONAL)
C4,C5
BY-PASS CAPACITORS, .0047
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
CR4
12V DC RELAY COIL
D1
FREE WHEELING DIODE
D2
BACKGROUND DIODE
L1
OUTPUT INDUCTOR (CHOKE)
L2,L3
HIGH FREQ INDUCTORS
L4 -L13
RF TOROID CHOKES
R1
OUTPUT CONTROL POTENTIOMETER, 10K
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
R8
RESISTOR, 5/50
R9
FREQ CONTROL POTENTIOMETER, 10K
R10
ON TIME CONTROL POTENTIOMETER, 10K
R11
BACKGROUND POTENTIOMETER, 10K
R12
DOWN SLOPE POTENTIOMETER, 10K
S1
INPUT POWER SWITCH
S2
POLARITY SWITCH
S2A
MICROSWITCH ON POLARITY SWITCH
SCR1,2,3,4 MAIN POWER SCR'S
SV1
GAS SOLENOID VALVE, 115VAC
SV2
WATER SOLENOID VALVE, 115VAC (OPTIONAL)
T1
MAIN TRANSFORMER
T2
HIGH VOLTAGE TRANSFORMER
T3
HIGH FREQ TRANSFORMER
N.A. CONNECTION IS PIN TO PIN BETWEEN J23 AND J5.
N.B. ROBOTIC INTERFACE CONNECTION.
N.C. REMOVE JUMPER PLUG IN J3 WHEN INSTALLING
TIG OPTION PC BOARD.
N.D. DISCONNECT JUMPER LEAD BETWEEN PIN 1 AND
PIN 2 IN J3 TO DOUBLE PREFLOW & POSTFLOW TIMES.
N.E. DISPLAY TOGGLE SHOWN IN MIN AMP POSITION.
N.F. PLUGS INTO LOWER SWITCHED RECEPTACLE.
SV2
WATER VALVE
(OPTIONAL)
N.F.
313A
G-2
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.