Lincoln Electric IDEALARC DC-655 Service Manual page 102

G-2
Wiring Diagram (G3348-1)
DUAL (EXCEPT 380/500V & 230/400V) & SINGLE VOLTAGE
UNDER 346 VOLTS (SHOWN CONNECTED FOR LOW VOLTAGE)
TO
N.D. H3
SUPPLY
LINES
H2
X1 L1
L3 L2
TO GROUND PER
W
NATIONAL
ELECTRICAL V
256
CODE
U
CR 1
CONTACTOR
H1
255A
SINGLE VOLTAGE OVER 345 VOLTS
TO
N.D.
H2
SUPPLY
LINES
H3
X1
L3 L2 L1
TO GROUND PER
W
NATIONAL
ELECTRICAL V
256
CODE
U
CR 1
CONTACTOR
255A H1
N.G.
1
2
3 32
GREEN
4
5 2
6 4
77
P16 7
8
42
9 32
31
GREEN
10 76
2
11 75
4
21
12
13 41
77
14 42 76
OPTIONS
DUAL FEEDER P.C. BOARD
1
2
3
4
5
6
7
J17
8
9
10
1
11
2
12
32 3
13
GREEN
4
14
2
5
4 6
77 7
JUMPER
J19
PLUG 8
TO J16 31 9
76 10
1
75
11
2
21 12
3
41 13
42 4
14
5
6
7
J18
8
9
10
11
12
13
14
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 enclo-
sure panels of your machine.
ELECTRICAL DIAGRAMS
RECONNECT
.0045MFD
PANEL 3000V
3
C9
TO
RECONNECT 2
C8
11
3 9 6
PANEL
1
10 2 8 C7
5
31
115V RECEPTACLE
12 1
7 4
FLEX
TO PRIMARY LEAD
CONNECT OR INSULATE
COILS
AS SHOWN ON INPUT
CONNECTION DIAGRAM
H4 H3
H2 H1
RECONNECT
PANEL
211
X1 X2
SW1
T2 CONTROL POWER SWITCH
11 3
TRANSFORMER
10 2
12 1
TO PRIMARY
COILS
336
335
S
T1 MAIN 42V
TRANSFORMER F
333
S
10V
F
334
42A
331
S
1 2 10V 3
32A
F
332
S
42A
PRI. S
45V
F
6
4 5
F
31
41
N.A.
7 203 8 205 9 207
F F F
32V 32V 32V
13 14 15
S S S
PRI.
204 11 206 12 208
10
AUX1
SEC.
31
41
STANDARD
14-PIN
RECEPTACLE
21
(FRONT VIEW)
75
SEC.
A1 A3
32
SCR SCR
G1 G3
GREEN
3
1
2
4
77
42
32
31 31
GREEN
76 41
2
75 14-PIN
4 RECEPTACLE
21 21
(RIGHT)
41 75
77
(FRONT VIEW)
42 76
G2 G4
SCR SCR
4
2
A2 A4
32
GREEN
2
4
77
42
32
31 31
GREEN
76 41
75 2 14-PIN
4 RECEPTACLE
21 21
(LEFT)
41 75
77
(FRONT VIEW)
42 76
10A 42V CIRCUIT BREAKER 1
42A 42
2
32 3
4
2
5
4 6
GND.
77 7
STUD
J16
8
20A
32 31 9
115V
CIRCUIT 76 10
BREAKER
75 11
21 12
41 13
32A
32A
42 14
32
2
222
31
210
T.S.2
31
+21 -21 41 4 2 T.S.1
31 32 75 76 77
4 2
255 255
OUTPUT
TERMINAL 2
282
SWITCH
SW5
RED
4
BLK
281
T3
CONTROL
255
BOARD
TRANSFORMER
255
PILOT
W
256
LIGHT
256
THERMAL
PROTECTION
41 Y 305
LIGHT
+ -
BRASS
41 TERMINAL
N.F.
SECONDARY
41
THERMOSTAT
41 273 41A
CHOKE LEAD
41 41
THERMOSTAT
115V
31
31
W
FAN
MOTOR
B
300
319
1 1 315 NTC
2 2 318
J11
32A 317 316
3 3
300 4 4 41
N.H.
J10
G2 5
14
13 6 314
A4
G1 12 7 301
G4 11 8 305
A5 30
R2
A5 10 300W
G5
9 1 319
J20
A6 8 2 316
J9
A3
7
214
A2 6 6 G6
SCR
G5 A1 5 G5
5
5
G3
4 4 G4
J8
G6 3 3 G3
222 2 2 G2
C
1 1 G1
THERMAL FAN/
SNUBBER P.C. BOARD
G6
OUTPUT
SCR
RECTIFIER
J20 J6,J11 J4,J8,J13 J7,J10,J12,J14
6 ASSEMBLY
1 1 2 1 3
A6
3 4 4 6
2
J1,J9,J15,J16
J2 J17,J18,J19
1 6 1
7 12 8
CONNECTOR CAVITY NUMBERING SEQUENCE
(VIEWED FROM COMPONENT SIDE OF BOARD)
ELECTRICAL SYMBOLS PER E1537
J15 P15
OUTPUT
J14
75 1 75 CONTROL 202
75 75 201
2
10K
210
76 3 76
236 R1 75
77 77 315
4
R3
215
2 5 2
237 10K 1/4W 317
41 6 41
222
210 7 210
32A 8 32A
SW3
4 9 4
N.E. OR
76 77 OUTPUT
238
41 10 41
CONTROL
226
202
41 11 41
SWITCH
12 201
210
42A 13 42A
222 14 222 315
237 236
215
317
222
1 2 3 4 5 6
1
J3
2
3
4
5 J2
231 6
7
210
281 8
9 N.J.
10
282
11 S1
12
238 1 2 3
CONTROL
OFF
P.C. BOARD
1 41A
J21
2 41
3 301 1 2 3 4 5 6 7 8 9
G1 1 4 2
5 208
G2 2
207
G3 3 6
J4 J5
7 206
G4 4
8 205
G5 5
6 9 4
G6
10 310
11 309
A 1
215
B 2 12
13 231
3
B' 14 214
4
J7
C 5 15 203
J22
P22
C' 6 16 204
1 261 261 1 261
7
2 262 262 2 262
A' 8 J6
3 263 263 3 263
FIRING CIRCUIT
4 342 4 342
P.C. BOARD
OUTPUT CHOKE
LOW
(-)
THERMAL FAN
HIGH
THERMISTOR
(-)
222A
222
222
222
222
TP3 ARC FORCE
222
10K
320V
160J
R4
(ALL 3)
321 322
C6 C2 TP2
210
.05MFD
210
600V
TP1
255
(ALL 3)
NC COM
OUTPUT SHUNT 255A
C1
(50 MV @800 AMPS) NO
+ -
CR 2
(+)
201 202
OUTPUT
345
215
NOTES:
J3
4 1 5 N.A. LEADS 4 THRU 9 ARE NOT PRESENT ON 380/500V,
1
AND SINGLE VOLTAGES OVER 345V MACHINES.
5 8 6 10 N.D. TAPE UP SEPARATELY TO PROVIDE AT LEAST
600V INSULATION.
J5
N.E. PLUG & LEAD ASSEMBLY GOES TO EITHER J12 (OPTIONAL DIGITAL
7 1 8
METERS PC BD.) OR J14 (IN LINE CONNECTOR FOR ANALOG METERS).
N.F. LOCATED IN SECONDARY COIL WINDING.
14 9 16
N.G. STANDARD 14-PIN RECEPTACLE PLUGS INTO J16 ON STANDARD
MACHINES AND IS REPLACED BY DUAL FEEDER OPTION IF USED.
N.H. LOCATED ON OUTPUT RECTIFIER FLAT HEAT SINK.
N.J. AS SHIPPED ONLY SWITCH #4 IS ON (UP). SEE INSTRUCTION MANUAL.
G-2
8
7 202
AM
-
6 201
210
5
4
3 VM
-
2
1 222 OPTIONAL
ANALOG METERS
8
7 6 336
6
5 334
J12
5 4 333
4 3 335
J13
3 2 332
2 1 331
1
OPTIONAL DIGITAL
METER P.C. BOARD
OPTIONS
7 8 9 10
1 201
2 202
3 75
4
5 314
226
6
J1
7
8 317
9
10 318
11 310
4
12 309
13 315
14 222A
10 11 12 13 14 15 16
341
215
340
215
344
SW2
MODE
SWITCH
(SHOWN IN CC
POSITION)
328
1
261
2
262
263 3
342 4
J23
346 FOR OPTIONAL
PARALLELING KIT
11-6-98
G3348-1
I-UF
G3348-1
DC 655