Lincoln Electric 11519 Service Manual page 109

G-5
SchEmaTic - WELD cONTrOL Pc bD (G4823) (PG1)
J2
3
WIRE
FEED J2
10K
2
SPEED
J2
6
ARC
J2
10K 1
VOLTAGE
J2
9
J2
14
J2
8
TO DISPLAY
PC BOARD
J2
5
J2
4
J2
10
J1
5
TACH J1
6
J1
1
J1 325
7
MAIN GUN TRIGGER
J1 324
8
J3
10
SPOOL GUN TRIGGER
J3
7
J5
10
THERMOSTAT
J5 320
12
J5
4
SHUNT FEEDBACK
50mV = 300A
J5
5
J5
13
+15V
251
R89
16.2K
252 PE4
R92
3.32K
BURNBACK TIME
C31
44.2K
0.1uF
50V
SPOT TIME
+15V W/ DEAD BAND "OFF"
COM
256
R88
16.2K
253 PE5
R91
3.32K
C30
254
44.2K
0.1uF
OPTION BOARD SENSE
50V
COM
+15V
COM
4 STEP / NORMAL
TRIGGER MODE
4 3 MOSI
R77 X3
100
HC14A
6 5 SCK
R76 X3
100
HC14A
SS
R78
100
RUN-IN
+5V
W/ DEAD BAND "OFF"
COM TACH
+15V
CIRCUITRY
D35
1A 13.7K
515B
400V
555 9 8 IC1
R98 X3
C46 3.01K
C47
206B 0.1uF D33
HC14A
1A 0.0047uF
50V
50V
400V
+5V
COM
TRIGGER
+15V
CIRCUITRY 4.75K
R153
R131 R128 PC2
100 100
500
R154
Q13
R130 R129 R156
0.5A
100 100 332
40V
500 +5V
C79
221
DZ7
0.1uF
5.1V
50V
1W
4.75K
COM PC4
R155
Q12
R127 R126 R157
0.5A
100 100 332 40V
500
C80
DZ8
221
0.1uF
5.1V
50V
1W
+15V
COM
PC6
R148
4.75K
C61
2K DZ11
0.1uF
ZERO-CROSSING
50V 6.2V
1W
DETECTOR
COM
CURRENT SENSING CIRCUITRY
206S
R67 R66 +5V
L4
511 44.2K
D37 330uH C57
1A 110mA 0.1uF
30V 50V
D20
1A
COM 400V
COM
6
PE1
X6 R58 R62
7
205
2.21K 100
R64 1014
5 C20 D19
L3
511 0.022uF 1A
LINE VOLTAGE
330uH 50V
400V
C58
110mA
44.2K SENSING
0.1uF
50V
COM
207
207 COM
VOLTAGE SENSING CIRCUITRY
24.3K
+15V
PE3
R63
100
28K D16 DZ14
1A 2 6.2V
400V
X6 R61 1W
1
1014 6.81K
3
COM
10K C32 C34 C33
D29
0.1uF 0.1uF 0.1uF
1A
50V 50V 50V 400V
COM
NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual.
ELEcTricaL DiaGramS
+15V
X13
11 10
R71
261
3.32K
J4
8 12
C24 4066B
44.2K 0.1uF
50V
PB1
J4 262
3
COM
X13
J4 263 8 9
2 R72
3.32K
6
4066B
C25
+5V 44.2K
264 0.1uF
J4 50V
5
PB0
COM 2.21K
COM
265
J4 IC3
1
C29 +5V
0.022uF DZ9
50V 6.2V
1W
D22
1A
400V
J4 260 COM 1 2 PC1
6 R75 X3
10K
C22 HC14A
D21
4.75K 0.1uF
1A
400V 50V
COM
PB6
5
J4 267 PE7
4 R68
3 4
3.32K
X13
4066B
C23
44.2K
0.1uF
50V
COM +5V
+5V 6.81K
C65
1uF
35V
10K
52
VRH
COM 51
VRL
+5V 2
MODB
IC3 34
PA0
IC2 33
PA1
IC1 32
PA2
4.75K EXTAL 7
+5V
EXTAL
PE0
43
PE2 PE0
PE1 45
PULL_UP +5V PE1
PE2 47
PE2
PE3 49
PE3
PE4 44
PE4
1K
PE5
46
2 Vdd 4.75K PE7 PE5 X1
PE6 48 68HC711E9FN
PE6
X2
C10 OUT RESET PE7 50
PE7
0.1uF 1
50V S-80845CNY 18
XIRQ
C14
19
0.022uF
3 Vss IRQ
50V PC0
9
A0/PC0 A15/PB7
PC1 10
A1/PC1 A14/PB6
PC2 11
A2/PC2 A13/PB5
COM
PULL_UP 12
A3/PC3 A12/PB4
PC4 13
A4/PC4 A11/PB3
PC5 14
A5/PC5 A10/PB2
PC6 15
A6/PC6 A9/PB1
+5V +5V PULL_UP
16
A7/PC7 A8/PB0
D24
1A
10K
400V
208 5
R79
2 IC2
22.1K X4
C26
D23
4
0.1uF 1A
2901N
50V 30V
COM
X9 +15V
11 10
PE2
+5V
12
4066B
C43
0.022uF
50V 4.75K
D34
0.022uF
1A
COM
400V
541A
R99 R95
16.5K 100
Q23
195mA
1.5K 13 12
PB7 X3 60V
HC14A
COM
COM
PB3
Q11
R111
XTAL
0.5A
3.32K
40V
C13
22pF
100V
Y1 1M
COM
8.000Mhz
EXTAL
C12
22pF
100V
COM
+15V
J5
6
PE6 INDUCTANCE
SELECT
J5
14 R182
4.75K
+15V
J3
9
SPOOL/
PUSH-PULL
SELECT
J3
1 R188
4.75K
OC5 7
1 SPOOL_DRIVE
X5
6
2901N
6.81K
COM
+15V
1 8
VCC VB
C78
2 7
IN X8 HO
0.1uF
50V 3 6
COM VS
IR2117
+5V +15V
COM
4.75K 5.62K
8
5 X5
E 14
PB4
3 2901N
MODA
9
4 PULL_UP
AS
COM
6
R/W REF
8 XTAL
XTAL
17 RESET
RESET
27 OC1
PA7
OC2 OC2
28 5
PA6
29 OC3 2
PA5
X5
30 OC4
4
PA4 2901N
31 OC5
PA3
20 PD0
PD0
PD1 +15V
21
PD1
22 PULL_UP
PD2
23 MOSI
C8
PD3
6.81K 1.5K R39
0.022uF
24 SCK
PD4
50V 3.32K
22.1K
25 SS
PD5
PB7
35
9
36 PB6
PB7 COM 14
37 PB5 X4
8
38 PB4
2901N
39 PB3
40 PB2
41 PB1
PB0
42
FAN DRIVING
CIRCUITRY
+15V
352 J5
7
PE0
C54
0.0047uF 33.2K
1400V
1.5K
C9
15K
1uF
353 J5 35V
R108 15
267
OCI3 OCI3
1 6
C53 COM
TRI1
50V
2 4
C52
J5
16
0.022uF
50V
C51
TP7
0.0047uF
320V
1400V
150J
J5
R109 8
1K
THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION OWNED BY LINCOLN GLOBAL, INC. AND MAY NOT BE DUPLICATED, COMMUNICATED
PROPRIETARY & CONFIDENTIAL:
TO OTHER PARTIES, OR USED FOR ANY PURPOSE WITHOUT THE EXPRESS WRITTEN PERMISSION OF LINCOLN GLOBAL, INC.
SINCE COMPONENTS OR CIRCUITRY ON A
DESIGN INFORMATION REFERENCE:
PRINTED CIRCUIT BOARD MAY CHANGE
WITHOUT AFFECTING THE INTERCHANGE- ---------
DRAWN BY: JZ
ABILITY OF A COMPLETE BOARD, THIS
JZ DO NOT
DIAGRAM MAY NOT SHOW THE EXACT ENGINEER:
SCALE THIS
COMPONENTS OR CIRCUITRY OF CONTROLS
APPROVED: DRAWING
HAVING A COMMON CODE NUMBER.
G-5
PC0
C71 DZ12
2K
0.1uF 6.2V
50V
1W
COM
PC5
C72 DZ13
2K
0.1uF 6.2V
50V
1W
COM
+15V
33.2
J1
541A
D12 4
1A
400V
Q7
45A
MAIN
R105 100V
MOTOR
100
C48
C7
J1
0.1uF 82uF
2
50V 35V
R205
15
+15V
D13
3A
200V
R106
5.62K
COM
Q6
0.5A D36
1A
40V Q10
400V
45A
R107 100V
475
Q8
DZ4
.5A
18V
40V
1W
COM
6 5
8 9 3 4
X9 X9
4066B 4066B
COM
R102
13.7K
+15V
C49
0.022uF
2.67K
50V
44.2K
CS
C17
0.1uF
1K 50V
0.1
5W
COM
12
R103
COM
14 4.75K
R192 X6
13
1014
R193
5.62K
C15
243 330pF
100V
COM
GENERAL INFORMATION LAST NO. USED
R- 206 OCI- 3 Q- 24 Y- 1
ELECTRICAL SYMBOLS PER E1537
C- 80 TRI-1 X- 15 L- 4
CAPACITORS = MFD ( .022/50V UNLESS OTHERWISE SPECIFIED)
LABELS D- 60 DZ- 14 TP- 9
RESISTORS = Ohms ( 1/4W UNLESS OTHERWISE SPECIFIED)
DIODES = 1A,400V (UNLESS OTHERWISE SPECIFIED)
SUPPLY VOLTAGE NET
POWER SUPPLY SOURCE POINT
COMMON CONNECTION
FRAME CONNECTION
EARTH GROUND CONNECTION
EQUIPMENT TYPE: POWER MIG255C
PAGE 01 OF 03
DOCUMENT
SUBJECT: SCHEMATIC, CONTROL PCB DOCUMENT
NUMBER: REVISION:
MATERIAL APPROVAL PROJECT G 4823-2F0 A.01
NA 2/21/2007 -------
DISPOSITION: DATE: NUMBER:
Power miG® 255XT