Lincoln Electric LN-25 PRO DUAL POWER Service Manual page 103

G-11
SchEmaTic - prESET pc bOarD - (G4748) pG1
CURRENT READING
J10
1
LEM
Current
Transducer
J10
2
BLOCK A
-15V
J10
4
J10
3
C33
4.7uF
35V
J10
10 COM
+15V
J10
9
1 J8
C28
4.7uF
35V
COM
2 J8
C37 C31
470uF 100uF
1K
10V 20V
COM
10 J8
COM
BLOCK C
3 J8
R70
12.1K
0.1W
4 J8
R75
12.1K
0.1W
5 J8
3
R77
12.1K
0.1W
6 J8
R72
12.1K
0.1W
J8
7 R74
267
0.1W
8 J8
R73
12.1K
0.1W
9 J8 3
R76
12.1K
0.1W
C:\Jobs\G4749-1F0\G4748.sbk(01;17)
R25
+5V
1K
0.1W
R54
150K 2
0.1W
D2
0.2A
9 30V
C15
X5 R26
13 8 1
0.1uF
2K
50V X5 33074ADT
14 10
33074ADT
12
1.3K
0.1W
COM
2.67K
0.1W
R40
15K
0.1W
COM
R39
6
12.1K
X5
7
0.1W
33074ADT
5
COM
POTENTIOMETER READING
J10
77
16
MACHINE SETUP
+5V
S1
+5V
OUTPUT
TO BLOCK I
R82 PB_INPUT
47.5K
C29 J10
75
3.32K 15
0.22uF
0.063W
50V
COM
BLOCK B
76 J10
14
SPI OUTPUT
TO BLOCK I
/SS
3 4 1 6
X14 X14 CS1
BLOCK L
EXPERIMENTAL USE
20
4 1 6
X16 X16 CS2 Vcc
J10
SDA 13
X3
74ACT573
GND
J10 11
SCK
10
1 6 3 4
X12 X12 CS3 J12
XRES 2
OUTPUT TO BLOCK I
MISO
1 6 3 4
SCLK
X13 X13 MC1413BD
4 1 6
X15 X15 MOSI
Wed Nov 12 11:35:56 2008
NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual.
ElEcTrical DiaGramS
R87
1M
39.2K
0.1W
ELECTRODE J10
3 ARC_I_POS 6
39.2K
20K
0.1W
1W
2.21K
20K COM
1W 39.2K
0.1W
OUTPUT
TO BLOCKS J12
COM WORK
6
G AND I
3
5
CR3 39.2K
0.1W
4
+5V
2
J12
821
3
D6
3 ARC_I_NEG
0.2A
30V R104
J10
R52 21 8 R86
1
2K 1M
500
2.21K
COM
+15V
1
D10
3
0.2A R64
7
13 70V
2 7.68K
INA117
X18
14 2 0.1W
6
X9 33074ADT
12
3 8 C17
1 5
0.1uF
4
50V
9
X18
C16
8
0.1uF
33074ADT
10
50V
COM
-15V
COM
+15V
1
D19
3
0.2A R93
7 6 70V
7.68K
2 INA117
X18
0.1W
7 2
6
X17 33074ADT
5
3 8
C25
5
1
0.1uF
4
50V
C30
0.1uF
2
50V
COM X18
1
-15V 33074ADT
3
COM
+5V +5V
20 5 5 5
Vcc
C5 C6 C22 C21
0.22uF 0.22uF 0.22uF 0.22uF
X4 X15 X16 X14
10V 10V 10V 10V
74ACT573
LVC2G14GW LVC2G14GW LVC2G14GW
GND
10 2 2 2
COM
COM
COM
+15V
+5V
C32
4 0.1uF
50V
5
5
X1
9
X18
C20
33074ADT X12 0.22uF
COM X11
8 C27 10V
11 LVC2G14GW
0.1uF LVC2G14GW
50V
2
2
COM
-15V
COM
COM
+15V
ARC VOLTAGE FEEDBACK
2
D9
0.2A
3 +5V
30V
C9
0.1uF 1
2
50V
D3
3 ARC_V_POS
3 -15V
AD620R 6
1
RG1 X2 R43
7 1 C4
6 4.75K
X10 33074ADT 4.75K 0.022uF
30V 0.1W
5
0.1W 50V
8 0.2A
RG2 REF
2
5
COM
R13
C18 +15V
COM
+5V
0.1uF 22.1K
50V 0.1W
2
2
D8
0.2A D1
3 3 ARC_V_NEG
30V
R57
9
1
22.1K
X2 R7 C1
8 1
0.1W 4.75K
3.32K 0.022uF
33074ADT
30V 0.1W
10 0.1W 50V
0.2A
-15V
COM
BLOCK E
COM
+5V
POT_V_HIG_POS
C12
0.022uF
5.62K
50V
0.1W
3
D5
0.2A
COM
1 30V 2
ARC ESTABLISHED
ARC_I_POS
OUTPUT
+5V
TO BLOCK I
+5V
2.21K
POT_V_LOW_POS
C34
ARC_I_NEG
5.62K 0.022uF C2
50V 100
0.1W 3 0.022uF
50V
D4
0.2A
1 30V 2
COM
COM
CS3 1
7
X6
CS2 2
LVC2G08
CS1
BLOCK D
/SS 1 6
X11
+15V
+15V
C13
5 4
0.1uF
50V
4 7
X13 X5
33074ADT
C3 C8
LVC2G14GW
COM
0.1uF X2 0.1uF X10
C7
2 11 50V 50V
33074ADT AD620R AD620R
0.1uF
50V
11 4
COM
-15V
-15V
+5V
1
2
7
X5 X7
1 2
33074ADT LVC2G08
3
42
Vdd
COM
COM
C23
X8
0.22uF
10V
CY8C29666
PROPRIETARY & CONFIDENTIAL: THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION OWNED BY LINCOLN GLOBAL, INC. AND MAY NOT BE DUPLICATED, COMMUNICATED
Vss
TO OTHER PARTIES, OR USED FOR ANY PURPOSE WITHOUT THE EXPRESS WRITTEN PERMISSION OF LINCOLN GLOBAL, INC.
18 49
SINCE COMPONENTS OR CIRCUITRY ON A
DESIGN INFORMATION
PRINTED CIRCUIT BOARD MAY CHANGE
WITHOUT AFFECTING THE INTERCHANGE- DRAWN BY: MFN/JPZ 11-12-2008
COM ABILITY OF A COMPLETE BOARD, THIS
DIAGRAM MAY NOT SHOW THE EXACT ENGINEER: APM REFERENCE:
COMPONENTS OR CIRCUITRY OF CONTROLS ---------
APPROVED:
HAVING A COMMON CODE NUMBER.
G-11
ARC_V_POS
38 23
ARC_I_POS P0[0] P5[0]
46 13
ARC_V_POS P0[1] P5[1]
39 24
ARC_I_NEG P0[2] P5[2]
45 12
POT_V_HIG_POS P0[3] P5[3]
40 30 DIGIT1
P0[4] P4[0]
FAN_CS
PG. 2 PG. 2
ARC_V_NEG 44 6
DIGIT2
POT_V_LOW_POS P0[5] P4[1]
PG. 2
41 31
ARC_V_NEG DIGIT3
P0[6] P4[2]
PG. 2
FAN_DRIVE 43 5 DIGIT4
P0[7] P4[3]
PG. 2 PG. 2
200 19 32
0.1W DIGIT5
SDA R71 P1[0] P4[4]
PG. 2
200 0.1W
17 4 DIGIT6
SCK R49 P1[1] P4[5]
PG. 2
20 33
DIGIT7
MISO P1[2] P4[6]
PG. 2
16 3 DIGIT8
PB_INPUT P1[3] P4[7]
X8
PG. 2
21 25
DATA0
CS P1[4] P3[0]
PG. 2
15 11
DETECT_SOURCE DATA1
P1[5] P3[1]
PG. 2 PG. 2
22 26 DATA2
P1[6] P3[2]
PG. 2
14 10
DATA3
MOSI P1[7] P3[3]
PG. 2
34 27 DATA4
P2[0] P3[4]
CY8C29666 PG. 2
2 9
DATA5
P2[1] P3[5]
200 0.1W
PG. 2
35 28
P2[2] P3[6] DATA6
SCLK R80
PG. 2
LEDS 1 8 DATA7
P2[3] P3[7]
PG. 2 PG. 2
36 47
THERMALS RELAY
P2[4] P2[7]
PG. 2 PG. 2
48 37
P2[5] P2[6]
29 7
XRES R78 XRES SMP
200
0.1W
10K
0.1W
BLOCK I
COM
2
X2
1
33074ADT
3
1
D7
3 J10 12
0.2A ARC ESTABLISHED
70V
2
10K
13
X2
14
COM
33074ADT
12
BLOCK G
CHIP SELECT BLOCK H
5
3
X6
6
LVC2G08
OUTPUT
5 TO BLOCK I
3 3 4
CS
X7 X11
6
LVC2G08
+5V
8 8
Vcc Vcc
C11
0.22uF
X6 X7
10V
LVC2G08 LVC2G08
GND GND
4 4
COM
LAST NO. USED
GENERAL INFORMATION
R- 104 Q- 4 X- 18 LED- 8
ELECTRICAL SYMBOLS PER E1537
37 S- 1 CR- 3 DISP- 2
C-
.022/50V
CAPACITORS = MFD ( UNLESS OTHERWISE SPECIFIED)
LABELS D- 22 L- 3 DZ- 1
RESISTORS = Ohms ( 1/4W UNLESS OTHERWISE SPECIFIED)
1A,400V
DIODES = (UNLESS OTHERWISE SPECIFIED)
SUPPLY VOLTAGE NET
POWER SUPPLY SOURCE POINT
COMMON CONNECTION
FRAME CONNECTION
EARTH GROUND CONNECTION
EQUIPMENT TYPE: LN-25 PRO
PAGE 01 OF 02
SUBJECT: DOCUMENT DOCUMENT
SCHEMATIC, PRESET PCB
NUMBER: REVISION:
4748-1F0 A.01
MATERIAL NA APPROVAL PROJECT G
------- 5021492
DISPOSITION: DATE: NUMBER:
lN-25™ prO DUal pOWEr