Electrical diagrams, Control pc board (g2666) schematic, Invertec v250s – Lincoln Electric INVERTEC V250-S User Manual
Page 117
G-6
ELECTRICAL DIAGRAMS
INVERTEC V250S
Control PC Board (G2666) Schematic
50V
0.1
C6
50V
0.1
C10
1.50K
R34
NC
GND
S
V
OUT
IN
OUT
GND
V
S
X4
3
4
7
5
1
6
8
2
NC
GND
S
V
OUT
IN
OUT
GND
V
S
X2
3
4
7
5
1
6
8
2
267
R7
1W
12V
DZ4
1.0A
30V
D35
4.7
35V
C7
50V
0.1
C5
1W
12V
DZ2
1.0A
30V
D7
50V
0.1
C20
1.0A
30V
D8
267
R15
3300
50V
C2
THERMAL
332K
R67
1W
20V
DZ3
33.2K
R65
X8
10
8
9
F
E
TSC4429JJA
TSC4429JJA
TRANSFORMER
18VAC
FROM AUXILIARY
LM350
LIGHT
Y
(+)
100K
R8
100K
R16
5W
1.0
R1
D2
D1
1W
18V
DZ1
J3
13
J1
3
ADJ
OUT
IN
X1
D4
D3
1.50K
R10
150
50V
C4
15J
50V
TP1
D6
243
R12
C3
J3
6
2.67K
R11
J1
1
50V
.022
C50
FILENAME: G2665_1CB
SCALE
LT1014
X9
4
11
50V
.1
C35
Ch'ge.Sht.No.
1A, 400V
CAPACITORS =
50V
.022
C32
J5
6
50V
.022
C8
+15V
D39
4066B
X7
14
7
LM224
X8
4
11
D34
X7
4
3
5
o
t
56
R45
o
t
56
R60
10K
R59
J5
5
D-
2665
UNLESS OTHERWISE SPECIFIED)
FRAME CONNECTION
SUP'S'D'G.
CHK.
76
77
EARTH GROUND CONNECTION
(
RESISTORS = Ohms (
SCHEMATIC
DZ- 12
130
Q- 7
X- 9
SHT.
SUPPLY
75
GENERAL INFORMATION
MFD
UNLESS OTHERWISE SPECIFIED)
SOFT SCRATCH
VOLTAGE NET
V250S CONTROL
G
46
LABELS
WITH PUBLISHED STANDARDS
ON 3 PLACE DECIMALS IS + .OO2
ON ALL ANGLES IS + .5 OF A DEGREE
MATERIAL TOLERANCE ("t") TO AGREE
ON 2 PLACE DECIMALS IS + .O2
ON HOLES SIZES PER E-2056
UNLESS OTHERWISE SPECIFIED TOLERANCE
NUMBER.
NOT SHOW THE EXACT COMPONENTS OR CIRCUITRY OF CONTROLS HAVING A COMMON CODE
WITHOUT AFFECTING THE INTERCHANGEABILITY OF A COMPLETE BOARD, THIS DIAGRAM MAY
N.A. SINCE COMPONENTS OR CIRCUITRY ON A PRINTED CIRCUIT BOARD MAY CHANGE
NOTES :
D43
J3
8
D44
3
HEXTRGR
X6
14
7
X6
5
6
X6
9
8
100K
R100
X8
7
5
6
D41
4.7
35V
C47
X7
11
10
12
AMPLIFIER
CONTROL
+15V
CURRENT
.022/50V
OVERCURRENT
Vref
FOLDBACK
COMMON CONNECTION
R-
(UNLESS OTHERWISE SPECIFIED)
51
LAST NO. USED
THE LINCOLN ELECTRIC CO.
SUBJECT
TYPE
CLEVELAND, OHIO U.S.A.
C-
ELECTRICAL SYMBOLS PER E1537
EQUIP.
NO.
POWER SUPPLY SOURCE POINT
DR.
DATE
1/4W
47.5K
R64
Vi
100K
R98
47.5K
R95
D36
6.19K
R97
332K
R96
1.50K
R99
1.0
35V
C48
13.7K
R102
40V
600mA
Q5
10K
R43
332K
R103
100K
R85
33.2K
R94
332K
R52
1W
5.1V
DZ11
X9
7
5
6
150p
100V
C46
1N914
D40
X8
1
3
2
15.0K
R75
1N914
D33
82.5K
R74
100K
R101
47.5
R113
10K
R76
o
t
56
R46
D19
J3
9
4.75K
R82
X6
1
2
10K
R79
50V
.022
C38
X7
13
2
1
crisp
SD'
J3
2
J3
5
D42
+15V
J3
1
crisp
47.5
R115
J3
4
D26
1W
6.2V
DZ7
47.5
R114
soft
50V
.022
C40
6.81K
R47
J5
3
+15V
soft
CONTROL
10K
LOCAL
1
100
R86
SWITCH
2
SPDT-Center off
TIG
MODE
REMOTE
D24
J3
7
CW
OUTPUT
MAX
50V
.022
C28
PRECHARGE TIMER
+15V
332K
R37
D22
1W
12V
DZ12
40V
600mA
Q7
J2
8
33.2K
R128
D46
J2
2
15.0K
R44
D10
100K
R36
47.5K
R35
+15V
+15V
+15V
+15V
50V
.1
C23
33.2K
R129
D23
PROTECTION
G
FROM
THERMOSTATS
50V
.0047
C21
D45
o
t
56
R5
D32
47.5
R107
50V
.1
C12
D12
J1
4
40V
600mA
Q3
D11
D13
221
R48
J1
2
47.5
R106
10K
R108
1W
15V
DZ5
4.75K
R66
10.0
R29
S
G
D
Q1
1.00K
R130
1.00K
R41
33.2K
R23
26.7K
R13
50V
.022
C15
56.2K
R18
50V
150p
C14
2.67K
R14
22.1K
R17
100V
47p
C45
4536B
X5
16
8
50V
.022
C31
50V
.022
C22
50V
.022
C39
221
R22
35V
4.7
C9
10K
R42
50V
2700p
C19
18.2K
R20
332
R21
Vref
Vref
TEST PT B
DIODES =
Vi
Test Pt A
100V
47p
C16
50V
.022
C13
+15V
1/2W
1
R40
50V
.018
C11
CLIM
Vref
SYNC
OUTA
GND
Vc
OUTB
Vin
SHUT
RT
CT
COMP
V-
V+
I+
I-
SG3847
X3
8
2
1
3
4
5
6
7
16
14
13
12
11
10
9
15
20V
1.8
C17
10K
R19
2.21K
R33
20V
1.8
C18
J2
7
J2
4
1.0A
30V
D29
+
t
.24
R9
47.5K
R61
50K
2665
STRIKE
D28
SS
4536B
V
V
8
DD
16
A
X5
SET
RESET
IN 1
OUT 1
OUT 2
8 BY-PASS
CLOCK INH
MONO IN
OSC INH
DECODE
D
C
B
1
6
3
11
10
2
13
14
5
12
7
9
4
15
1.50K
R39
50V
2700p
C43
Vi
J4
2
50V
.1
C51
56.2K
R88
2.94K
R89
2.94K
R90
100
R104
J4
1
CIRCUIT
STICK
STARTING
CONTROL
J3
3
50V
2700p
C44
X9
14
12
13
56.2K
R91
SHUNT
-
+
SHUNT
TEST PT D
MAX
CW
AMPLIFIER
4.75K
R62
1.50K
R57
50V
.1
C30
SD'
562
R120
562
R111
562
R127
562
R126
40V
600mA
Q6
50V
.022
C29
D20
562
R112
+15V
Vref
crisp
DETECTOR
CW
SHORTING
+ ARC
OCV
75VDC
10K
ARC FORCE
D
soft
50V
.022
C36
4.75K
R58
47.5K
R77
562
R121
J3
12
Vref
TEST PT E
Vref
1W
5.1V
DZ10
1.00K
R81
50V
.0047
C26
Vref
X8
14
12
13
562
R30
C
562
R116
562
R122
8.25K
R71
8.25K
R72
562
R123
562
R31
33.2K
R93
D38
562
R117
1W
10V
DZ9
2.21K
R80
2.21K
R68
332K
R109
6.19K
R53
crisp
HOLD DOWN
O.C.V.
10K
R92
35V
4.7
C27
10K
R55
100K
R69
Vi
26.7K
R54
100K
R56
10K
R73
D31
33.2K
R38
J2
3
crisp
+15V
+15V
RELAY COILS
1N4936
D17
PWM
CONTROL
TO PULSE
FEEDBACK
+IFB
CURRENT
TRANSFORMER
TRIGGER
INTERFACE
26.7
R24
26.7
R25
100V
.15
C24
26.7
R27
26.7
R26
1N4936
D16
CURRENT
FEEDBACK
PRIMARY
-IFB
40V
600mA
Q2
1N4936
D18
1N4936
D15
J2
5
+15V
+15V
50V
.1
C42
J3
10
D27
X9
8
10
9
Vref
2.21K
R83
50V
.1
C41
J5
4
D9
X6
13
12
X6
11
10
X9
1
3
2
1.50K
R4
OPEN
Vi
CIRCUIT
DETECTOR
.022
50 V
C33
J3
11
4
2
1W
75V
DZ8
50V
.1
C49
D14
D37
3.32K
R70
D21
X6
3
4
3.32K
R78
D30
100K
R87
100
20V
C25
47.5K
R105
500mA
300V
Q4
10K
R49
J5
1
50V
.1
C1
100K
R3
332K
R2
D5
o
t
56
R6
100K
R51
47.5K
R84
J2
1
J2
6
10.0
R28
562
R119
562
R118
562
R124
562
R32
562
R110
562
R125
X7
9
8
6
4A
100V
G-6
NOTE: Lincoln Electric assumes no responsibility for liablilities resulting from board level troubleshooting. PC Board repairs will invalidate your factory warranty. Individual Printed Circuit Board Components are not
available from Lincoln Electric. This information is provided for reference only. Lincoln Electric discourages board level troubleshooting and repair since it may compromise the quality of the design and may result
in danger to the Machine Operator or Technician. Improper PC board repairs could result in damage to the machine.