Lincoln Electric 11519 Service Manual page 110

G-6
SchEmaTic - WELD cONTrOL Pc bD (G4823) (PG2)
6 J6 202
5 J6 204
4 J6 203
2 J5 208
1 J5 209
3 J5
11 J5
ELEcTricaL DiaGramS
+15V
681 681
SCR GATE DRIVE
CIRCUITRY
D10
1A
400V
6 4
R25
51
OCI2 OCI2
5W
1 2
D11
15 15
1A
400V
C5
0.0047uF Q2 562
1400V 0.5A
40V
C55
2.21K 10K
0.022uF
50V
OC3
TP2
50V
C4
15J
1uF
COM
35V
C3
1uF
C6
35V
0.0047uF
TP1
1400V
50V
15J
562 562
D9
15 15
1A
400V
6 4
R26
D8
51
R13 OCI1 OCI1
1A
5W
400V 681
1 2
+15V
R22
681
OC4 Q1
R21
0.5A
2.21K
40V
C56
10K
0.022uF
50V
COM
541A
541A
9 J5
354
D25 1A
400V
Q4
8A
150V 2.8K
Q5
0.5A
208
300V
1 X11
C19
TP3 0.0047uF
1400V
75V
R82
22J
100 1
209
X10 8
431I
C27
6
C18 0.0033F
0.0047uF 63V
TP4 5.11K
1400V
75V
22J
206
C35
0.0047uF
1400V
FRAME
NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual.
G1 J6 TO SCR GATE
3
562
204 J6
2
204
TO SCR GATE
G2 J6
1
POWER SUPPLIES
+15V
R49
D14
51
1A
5W
400V
R50
51
5W
+5V
15K
IN OUT
R56 R55 X12
26.7 26.7
7805
DZ2
8 18V GND
1W
6
431I
C16
C28
0.001F
82uF
35V
35V
3.01K
COM
SOLENOID DRIVE
CIRCUITRY
541A
390 J8
D38
1A
400V
392 J8
Q21
10A
OC1
R176 100V
200
10K
COM J3
D39
1A
COM
400V
J3
Q20
10A
PD1
R177 100V
200
10K
COM
COM
+5V
26 14
Vdd
C40
X1 X3
0.1uF
50V
68HC711E9FN
HC14A
Vss
1 7
COM +15V
3 3
C36
X4 0.022uF X5
50V
2901N 2901N
11 10 12 12
X3
HC14A
COM
J1 J2 J3 J4 J8
3 7 8 7 2
GENERAL INFORMATION
J2 J4 J8
11 9 4
ELECTRICAL SYMBOLS PER E1537
.022/50V
J2 J4 10 CAPACITORS = MFD ( UNLESS OTHERWISE SPECIFIED)
12 1/4W
RESISTORS = Ohms ( UNLESS OTHERWISE SPECIFIED)
DIODES = 1A,400V (UNLESS OTHERWISE SPECIFIED)
J2
13
PROPRIETARY & CONFIDENTIAL: THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION OWNED BY LINCOLN GLOBAL, INC. AND MAY NOT BE DUPLICATED, COMMUNICATED
TO OTHER PARTIES, OR USED FOR ANY PURPOSE WITHOUT THE EXPRESS WRITTEN PERMISSION OF LINCOLN GLOBAL, INC.
SINCE COMPONENTS OR CIRCUITRY ON A EQUIPMENT TYPE: POWER MIG 255C
DESIGN INFORMATION
REFERENCE:
PRINTED CIRCUIT BOARD MAY CHANGE
WITHOUT AFFECTING THE INTERCHANGE- DRAWN BY: JZ ---------
SUBJECT:
SCHEMATIC, CONTROL PCB
ABILITY OF A COMPLETE BOARD, THIS
JZ DO NOT
DIAGRAM MAY NOT SHOW THE EXACT ENGINEER:
SCALE THIS MATERIAL APPROVAL
COMPONENTS OR CIRCUITRY OF CONTROLS NA
APPROVED: 2/21/2007
DRAWING DISPOSITION: DATE:
HAVING A COMMON CODE NUMBER.
G-6
3
MAIN GAS SOLENOID
1
11
SPOOL GUN GAS SOLENOID
12
14
C41 C62
X13
0.1uF 0.022uF
50V 50V
4066B
7
4 14
C37 C38 C39
0.022uF X6 0.022uF X9 0.022uF
50V 50V 50V
1014 4066B
11 7
COM
LAST NO. USED
R- -
_
C-
LABELS D- _
SUPPLY VOLTAGE NET
POWER SUPPLY SOURCE POINT
COMMON CONNECTION
FRAME CONNECTION
EARTH GROUND CONNECTION
PAGE 02 OF 03
DOCUMENT DOCUMENT
NUMBER: REVISION:
PROJECT 4823-2F0 A.01
G
NUMBER:
Power miG® 255XT