Electrical diagrams, G-19, V300 pro – Lincoln Electric INVERTEC V300-PRO SVM105-B User Manual
Page 111: Crisp (cc) fcaw (cv), Gmaw (cv) soft (cc)
ELECTRICAL DIAGRAMS
G-19
V300 PRO
SCHEMATIC - CONTROL PC BOARD (G2525)
G-19
NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual.
CANADA
COMPONENTS OR
RESISTORS = Ohms (1/4W UNLESS OTHERWISE SPECIFIED)
(U N L E SS OTHERWI S E SPECI FI ED)
5
J4
6
10
J1
DIODES = 1A, 400V (UNLESS OTHERWISE SPECIFIED)
2525
G
INVERTEC V300
EARTH GROUND CONNECTION
POWER SUPPLY SOURCE POINT
ELECTRI C AL SYMBOLS PER E-1537
7
VOLTAGE NET
LABELS
COMMON CONNECTION
test points
FRAME CONNECTION
14
SUPPLY
CONTROL P.C. BOARD SCHEMATIC
J5
33.2K
R92
X7
13
12
+ ARC
SHORT
SHORTING
DETECTOR
NOTES :
MAY NOT SHOW THE EXACT
WITHOUT
(more notes)
N.A. SINCE COMPONENTS OR CIRCUITRY ON A PRINTED CIRCUIT BOARD MAY CHANGE
GENERAL INFORMATION
INTERCHANGEABILITY OF A COMPLETE BOARD, THIS DIAGRAM
CI RCUI TRY OF C ONTROLS HAVI NG A C OMMON CODE N UMBER.
AFFECTI N G THE
B
VOLTAGE
A
SETTING
X1
14
13
12
26.7K
R140
22.1K
R122
X10
3
4
5
X10
98
6
CC
C
TO
B
SET
GMAW
825
R96
3.32K
R33
4.75K
R79
26.7K
R126
68.1K
R131
10K
R38
221K
R72
10K
R51
22.1K
R127
47.5K
R116
43.2K
R56
100K
R34
56.2K
R130
X11
1
2
3
100K
R118
X10
1
2
13
D20
OCV
301
R120
B
A
FC
10K
R125
A
CURRENT
SETTING
2.67K
R119
4.75K
R121
X11
7
6
5
332K
R117
10K
R139
D33
2.7
50V
C68
475K
R129
1W
5.1V
DZ14
100K
R123
Vref
100K
R124
10K
R109
X8
13
2
1
J5
13
D36
+15V
1N914
D16
475K
R3
4.75K
R99
50V
.022
C51
D34
X8
4
3
5
X7
1
2
D35
100K
R48
18.2K
R69
1W
5.1V
DZ4
50V
.022
C24
SCALING
SOFT
D
SOFT
CONTROL
CURRENT
V
I
AMPLIFIER
A
SOFT
C
A
B
SHORT
B
10K
R143
o
t
56
R103
J3
1
332K
R16
47. 5K
R84
47.5K
R71
332K
R19
X1
1
2
3
10K
R4
10.0
R61
50V
.33
C31
10.0
R147
50V
2700p
C34
10.0
R148
475
R65
J3
2
475
R77
OCV
X7
56
50V
C37
50V
.022
C60
50V
.022
C45
TEST PT D
Vref
SHUNT
OPEN
B
SHUNT
-
AMPLIFIER
2700p
V
D
+
I
DETECTOR
CIRCUIT
V I
B
X4
14
12
13
Vref
Vref
+ ARC
GMAW
I
V
AMPLIFIER
CONTROL
VOLTAGE
A
D
D
C
BOARD
OCV
OCV
OVERCURRENT
FOLDBACK
X9
2
1
13
D27
100K
R114
X1
7
5
6
.022
50 V
C66
22.1K
R112
332K
R113
D5
100K
R40
X3
7
5
6
D25
475K
R10
4.75K
R90
50V
.022
C36
332K
R41
1.0
35V
C28
33.2K
R55
221K
R86
10K
R87
50V
0.1
C41
X6
6
8
9
A
D
47.5K
R47
681K
R49
.022
50 V
C1
X7
11
10
C
100K
R1 3
681K
R108
X3
1
3
2
D29
J1
1
CRISP (CC)
FCAW (CV)
CRISP
TIG
CRISP
B
Vr ef
GMAW (CV)
SOFT (CC)
DP1
METER
TO
D22
PRESET
1.00K
R63
50V
2.7
C43
500mW
3V
DZ8
33.2K
R37
D52
X5
6
9
8
X5
10
11
12
ARC FORCE/PINCH
CW
D8
D40
J4
9
J4
7
+ ARC
X9
5
4
3
22.1K
R149
22.1K
R75
D47
1W
5.1V
DZ13
METER
35V
4.7
C65
J5
7
D26
150K
R66
50V
330p
C22
D10
500mW
3V
DZ3
1N914
D19
X6
10
11
12
J5
8
D42
221K
R39
X4
8
10
9
X7
34
475K
R42
J5
12
332K
R28
100K
R50
100K
R81
D45
4.75K
R135
1/2W
1
R6
J2
1
D21
392K
R29
50V
.022
C16
TEST_PT_E
+15V
TRIG
INTERFACE
TRI GGER
C
OCV
+ARC
TRANS.
CURRENT
200V
.33
C5
J2
3
1/2W
1
R5
1N4936
D3
1N4936
D7
50V
.022
C3
X3
8
9
10
50V
.022
C15
AMPS
OCV
C
VOLTS
D
V I
DPC
A
ACTUAL
B
AMPS
+ ARC
TIG
VOLTS
50V
.022
C54
50V
.022
C35
J4
8
1W
5.1V
DZ9
35V
4.7
C48
22.1K
R98
150K
R91
50V
.022
C67
35V
4.7
C39
301
R82
2.67K
R73
J4
1
4.75K
R97
150K
R85
50V
.022
C50
X8
12
11
10
10K
CW
R95
X8
6
8
9
33.2K
R136
X9
8
9
6
C74
26.7K
R70
+
t
60V
.13
R17
D51
10K
R2
X3
14
12
13
50V
.022
C27
47.5K
R9
100V
150p
C4
47.5K
R30
50V
.022
C6
J1
5
10K
R8
D13
J1
4
D4
1W
43V
DZ12
J2
4
TRIGGER
2W
680
R18
10K
R20
J4
12
D11
+
t
56
R15
1W
43V
DZ11
1W
390
R35
J4
11
CIRCUIT
D12
CNY1 7 - 3
OCI1
4
2
1
6
5
22.1K
R12
500mW
3V
DZ1
50V
20
C11
267
R11
47.5K
R7
2.67K
R144
+15V
B
BOARD
D14
22.1K
R133
100
20V
C72
X10
10
11
12
26.7K
R137
47.5K
R138
26.7K
R132
10K
R68
681K
R80
X4
7
5
6
10K
R43
150p
100V
C23
150K
R36
50V
.022
C32
4.75K
R142
100K
R94
50V
.022
C30
X6
1
2
13
OCV
1W
6. 2V
DZ5
TRIG
A
ARC FORCE
OCV
OCV
D38
D46
D9
39
20V
C71
Vref
50V
0.1
C59
D48
10K
R64
50V
.022
C70
+15V
10K
R46
HEXTRGR
X7
14
7
50V
.022
C44
LM 224
X1
4
11
50V
.022
C49
50V
.022
C17
X11
8
10
9
4066B
X8
14
7
LT1014
X4
4
11
50V
.022
C53
4066B
X9
14
7
50V
.022
C47
50V
.022
C58
LM 224
X3
4
11
4066B
X5
14
7
50V
.022
C57
J1
3
X11
14
13
12
D
50V
.022
C69
4066B
X10
14
7
4066B
X6
14
7
+15V
Vref
TEST_PT_B
C
UNUSED
LM224
X11
4
11
50V
150p
C75
J5
10
5K
CW
R14
100
R44
20V
1.8
C33
10K
R151
+15V
+15V
+15V
METER
+5V
BOARD
TO DRIVER
TO
CURRENT
FEEDBACK
D
CONTROL
SELECT
BOARD
PROT E C T I ON
50V
.022
C52
X9
11
10
12
26.7K
R22
50V
330p
C13
J1
8
40V
600m A
Q2
33.2K
R53
33.2K
R27
26.7
R155
22.1K
R25
50V
.022
C14
56. 2K
R24
4.75K
R93
26.7
R154
10K
R45
J4
6
35V
4.7
C19
50V
.022
C20
J1
7
50V
.022
C56
J1
2
50V
.018
C12
2.67K
R21
10K
R23
2.67K
R102
1W
5.1V
DZ10
f
1
.022
50 V
C2
J3
10K
R57
82.5K
R59
1
2
33.2K
R58
J2
1
2
1
d
CAPACITORS =
8
4
3
1
6
TEST_PT_E
Vref
5
10
D
1W
10V
DZ2
FCAW
50V
.0047
C18
X1
10
8
9
10K
R32
X5
4
3
5
1N914
D24
50V
.022
C64
D
4.75K
R88
OCV
Receptacle
6 Pi n
Re m o t e
B
F
C
F
N
I
J
K
4
5
SWITCH
3
MODE
1
2
TIG
are common
115VAC
115VAC, 42VAC
42VAC
to 4 P 2
Control
H
14 Pin
A
D
L
E
C
G
M
B
A
Remote
Control
R ecept acl e
D
E
50V
0.1
C73
J4
3
D17
D15
100
R101
J4
10
J5
6
J4
4
J5
11
D50
D37
J5
3
50V
.022
C61
50V
.022
C8
J2
2
D30
D39
o
t
56
R100
J5
4
50V
.1
C46
o
t
56
R104
Vref
+15V
D41
J5
14
D31
CONTROL
10K
R141
X4
3
1
2
LOCAL
10K
681K
R67
I
REMOTE
50V
.022
C38
221K
R52
Vref
C
A
100K
R105
PINCH
CRISP
V
475K
R26
+15V
CONTROL
10K
MAX
CW
OUTPUT
20V
1.8
C10
Vref
1N4936
D1
1N4936
D2
16.2K
R54
PRIMARY
X5
2
1
13
X6
4
3
5
1N5818
D23
CAD [50,50] G1916.HSD
J4
2
J5
2
TRIGGER
PROTECTI ON
TO
301
R128
OCV
REMOTE
24VAC F R O M
D28
XFRM
OUT P UT
TERMINAL
HOT
to TEMP.LED
AUSTRALIA
D18
1W
5.1V
DZ6
4.75K
R31
50V
0.1
C26
50V
.022
C63
CLIM
Vref
SYNC
OUT A
GND
Vc
OUT B
Vin
SHUT
RT
CT
COMP
V-
V+
I+
I-
SG3847
X2
8
2
1
3
4
5
6
7
16
14
13
12
11
10
9
15
X7
9
8
681K
R107
24.3K
R74
26.7
R152
20V
1.8
C29
26.7
R153
J4
5
28.0K
R146
150K
R110
100K
R60
0.33
50 V
C40
1W
10V
DZ7
C
+15V
C
8.25K
R62
40V
600m A
Q1
J5
5
PWM
CONTROL
BOARD
1 PHASE DET.
TO
+ ARC
PROTECTION
POWER
HOLD DOWN
J1
6
A
Cut out for Std.
-Pro Machines
267K
R83
35V
4.7
C42
22.1K
R111
1.0
35V
C62
33.2K
R115
E
100V
330p
C25
50V
.022
C55
6-25-93A