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G-3
ELECTRICAL DIAGRAMS
IDEALARC DC1000
Operating Schematic
TS 2
21
4
2
31
32
TS 3
R1
S4-A
S4-C
CVI
CVI
CVS
CVS
S3
2CR
L1
L2
L3
1CR
START
STOP
R1CR
2CR
SECONDARY
PRIMARY
SHUNT
215
215 210
210
226
238
75
3CR
220
215
CURRENT REED SW.
CLOSED WITH OUTPUT CURRENT
235
236
236
235
210 215
222
222
231
204
203
206
205
208
207
G1
G2
G3
G4
G5
G6
215
215
X
Y
Z
A
A'
C
B
B'
C'
75 VAC
75 VAC
75 VAC
SET POINT
POWER SUPPLY
VOLTAGE FEEDBACK
CURRENT FEEDBACK
FAULT DETECT.
SHUTDOWN
CONTROL AMP
OVERLOAD DETECT.
4CR
FAN MOTOR
F1
8A
31
32A
S2
222
216
216
214
R2
4CR
4CR
4CR
215
256
255
OUTPUT CHOKE
1J5
5J5
6J5
4J5
2J5
3J5
7J5
10J5
2J6
1J7
8J7
1J6
2J7
5J7
8J5
9J5
3J6
6J7
5J7
CONTROL PCB
2J4
5J4
4J4
1J4
6J4
3J4
FIRING PCB
120VAC
120VAC
FIRING CIRCUIT
FIRING CIRCUIT
FIRING CIRCUIT
231
231
231
FIRING BD. ENABLE
SCR1 & SCR2
SCR3 & SCR4
SCR5 & SCR6
GATE DRIVE
GATE DRIVE
GATE DRIVE
GATE DRIVE
GATE DRIVE
GATE DRIVE
FIRING SIGNAL
OUTPUT
SNUBBER
SCR1
SCR2
SCR3
SCR4
SCR5
SCR6
500 AMP OUTPUT
50mV @ 1300Amps
2J3
6J2
5J11
10J1
11J1
8J2
3J1
1J2
4J2
2J11
1J3
77
76
75
74
73
CVI
CVS
S4-B
266
230
73
74
7J2
8J1
14J1
13J1
5J2
CVI
CVS
S4-B
221
1J1
215
STARTING LOGIC
12J1
7J1
9J1
214
R3
"+"
OUTPUT STUD
"-"
OUTPUT STUD
CC
CC
CC
CC
229
224
+
+
16V
-
6.2V
-
10V
55V
2147
4-27-90
2-19-93L
3-19-93D
TRANSFORMER WELDERS
OPERATING SCHEMATIC
C.S.
NONE
2147
3-1-90
J.J. 7-31-92
t
UNLESS OTHERWISE SPECIFIED TOLERANCE
ON HOLE SIZES PER E2056
ON 2 PLACE DECIMALS IS .02
WITH PUBLISHED STANDARDS.
ON 3 PLACE DECIMALS IS .002
ON ALL ANGLES IS .5 OF A DEGREE
MATERIAL TOLERANCE (" ") TO AGREE
THE LINCOLN ELECTRIC CO.
CLEVELAND, OHIO U.S.A.
EQUIP.
TYPE
SCALE
DR DATE CHK
REF.
SUBJECT
SUP'S'D'G
SHT.
NO.
THE LINCOLN ELECTRIC CO.
THIS SHEET CONTAINS PROPRIETARY INFORMATION
OWNED BY AND IS
NOT TO BE REPRODUCED, DISCLOSED OR USED
THE LINCOLN ELECTRIC CO.
G
G
WITHOUT THE EXPRESS PERMISSION OF
PCB
OUTPUT
271
257
255
212
211
H3
H2
H1
T2
1CR
1CR
1CR
TO GROUND
TI
1
4
7
10
203
204
2
5
8
11
205
206
3
6
9
12
31
32A
207
208
256
G-3
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NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual.