Lincoln Electric SVM 106-A Welder User Manual


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G-6
ELECTRICAL DIAGRAMS
LN-7 GMA WIRE FEEDER
Schematic Diagram — CONTROL P.C. BOARD
LM224
X101
4
11
C120
(1)
C103
600V
.02
C102
1.00K
R108
24Vdc
CR101
J102
6
S2
S1
S1
D107
D119
15J
50V
TP103
R101
25W
GND.
21
32
J5
3
A
5
METER KIT RECEPTACLE
525
(NOT ON P.C. BOARD)
(SPEED)
R2,10K
C
ACCELERATION
544
542
543
(3)
SPEED CONTROL
CW
HIGH
ON DELAY
RESET & TURN
2.0
2
4
31
BREAKER
CIRCUIT
(LN-7 GMA FOR WATER
COOLED GUNS ONLY)
WATER SOLENOID VALVE
J101
1
CR101
7
4
J104
6
J104
3
J104
2
2A
250V
F101
J101
6
J104
5
J103
6
J101
4
1400V
.0047
C122
CR101
8
5
18.2K
R136
CABLE
ELECTRODE
1.00K
R144
133K
R145
S101 CLOSED - FAST
10K
CW
R140
S101
1
S101 OPEN - SLOW
200V
.01
C111
1.00M
R116
X101
1
3
2
D129
V20F
VTC
S2
J102
3
D121
332K
R154
6.81K
R118
J102
1
J102
2
X101
8
9
10
47.5K
R150
CNY17-3
OCI101
4
5
6
V20F
S1
V20F
21
GUN CABLE
508
567
509
526
1
4
CONNECTION
2
6
TO DYNAMIC BRAKING)
(DEACTIVATE SCR'S PRIOR
10K
R117
332K
R120
600V
.02
C121
100K
R119
D120
4.7
35V
C119
221K
R146
2K
CW
R137
3.32K
R142
D118
S
F
LEAD PROTECTION
CONTROL RELAY
TRIGGERING AND GROUND
WAVE CONTROL
V20U
WIRE FEED MOTOR
D11
SIGNAL
AND CURRENT SENSING
20A
400V
4
2
SCR FULL
(W)
B539
200V
.33
C109
2N6397
SCR103
2N6397
SCR102
38J
130V
TP102
D106
20A
400V
D110
4
1
10W
1.0
R112
1400V
.0047
C107
1400V
.0047
C108
5W
2.7
R153
D104
J101
3
J103
2
D102
J103
4
J101
2
J104
4
B508
J103
1
J104
9
150K
R149
1W
20V
DZ103
18.2K
R148
40V
600mA
Q103
221K
R138
2.21K
R135
D114
1W
10V
DZ102
D128
X101
14
13
12
221K
R139
15.0K
R133
D126
D115
50V
4
C118
221K
R134
T1
8.8V
(B)
(Y)
(Y)
32A
531
(LN-7 GMA ONLY)
(+15V)
GAS SOLENOID VALVE
V20F
VCEMF
S1
SCR FIRING
BLANKING
NUMBER.
NOT SHOW THE EXACT COMPONENTS OR CIRCUITRY OF CONTROLS HAVING A COMMON CODE
NOTES :
N.A. SINCE COMPONENTS OR CIRCUITRY ON A PRINTED CIRCUIT BOARD MAY CHANGE
LEAD COLOR CODING
Y - YELLOW
B - BLACK
R - RED
3.32K
R125
2N6027
QU101
2
3
1
C114
1/2W
15
R126
0.2mH
PT101
C116
10K
R128
100V
.1
C115
800mA
200V
SCR104
500mA
300V
Q104
4.75K
R124
200V
.047
C110
V20U
10K
R129
1.82K
R143
C113
3.32K
R151
D125
2.21K
R123
1.00K
R147
15.0K
R127
4.75K
R122
D124
300V
500mA
Q102
2.21K
R121
C112
VCEMF
BLANKING & CEMF
WITHOUT AFFECTING THE INTERCHANGEABILITY OF A COMPLETE BOARD, THIS DIAGRAM MAY
N.B. CR2 - GLP REED SWITCH (ACTUATED BY GROUND CURRENT).
2N5655
Q101
150K
R114
10K
R115
D113
2W
2.2K
R113
B541
1/2 OPTOCOUPLER
TEMP. COMPENSATED
(+15V)
VOLTAGE
DIODE
TEMP.
SUPPLIES
SENSING
B
SUPPLY VOLTAGE
(B)
WHEELING
FREE
D12
332
R131
(+20V UNFILTERED)
10K
R130
1N4007
D109
D117
CR101
9
3
13.7K
R132
20A
400V
4
3
5W
3300
R111
0.2mH
PT101
80J
150V
TP101
200V
.047
C105
0.2mH
PT101
5.11K
R152
200V
.047
C104
CNY17-3
OCI101
1
2
CR101
9
6
5W
20V
DZ101
5W
3300
R110
1N4007
D108
50V
50
C117
150K
R141
V20U
(1)
(+20V FILTERED)
1400V
.0047
C106
V20F
VTC
D116
X101
7
6
5
7209
L
11
CAPACITORS =
DIODES =
2
4
2
1
6
5
3
GENERAL INFORMATION
MFD
RESISTORS = Ohms (
(
.022/50V
1/4W
CONNECTORS
1A, 400V
ELECTRICAL SYMBOLS PER E1537
10
6
1
3
8
7
OPERATING SCHEMATIC
9
FRAME CONNECTION
UNLESS OTHERWISE SPECIFIED)
UNLESS OTHERWISE SPECIFIED)
(UNLESS OTHERWISE SPECIFIED)
SUPPLY
LABELS
POWER SUPPLY SOURCE POINT
COMMON CONNECTION
EARTH GROUND CONNECTION
CONNECTOR
5
D-
LAST NO. USED
R-
C-
155
129
125
VOLTAGE NET
12
LN-7 & LN-7 GMA
W - WHITE
4
D103
J104
7
J104
12
J104
11
2W
1.5K
R106
B7
523
B32A
J103
5
4.7
35V
C125
15.0K
R155
N.B.
GLP
524 525
GUN TRIGGER
529
RESET
CR2
CURRENT LIMITING
D
PHASE CONTROL
24V
522
JUMPER PLUG
(REMOVEWHEN GMA TIMER OR
BURNBACK KIT IS INSTALLED)
(B)
(R)
(R)
J103
3
B509
D101
50V
50
C101
B527
D127
4.75K
R103
1.00K
R105
J102
5
J102
4
800mA
200V
SCR101
B526
1
4.75K
R107
C123
J104
10
J104
6-26-92
J101,J102,
AND J103
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NOTE: Lincoln Electric assumes no responsibility for liabilities resulting from board level troubleshooting. PC Board repairs will invalidate your factory warranty. This Printed Circuit Board schematic is provided for reference only. It may not be totally applic-
able to your machine’s specific PC board version. This diagram is intended to provide general information regarding PC board function. 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.
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