Lincoln Electric LN-25 Service Manual page 105

G-15
SCHEMATIC - CONTACTOR PC BD - ABOVE CODE 10500 (M10965)
CONTROL BOARD
D1
J9
667
1
3A 600V
J9
624
4
J9
621
2
J9
530
3
J9
10
J9
11
J9
12
J9
500
9
J9
512 5
J9
606
6
J9
530A
7
J9
607
8
TIMER BOARD
J6
607
3
J6
530A
2
J6
606
6
J6
512
4
J6
500
5
J6
530
1
COLD INCH
SWITCH
J7
500
1
J7
530
2
D5
3
C5 C6
X3
3300
50V
LM2901
12
621
¤ ¤
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7W
2.7
R30
512
150K
22.1K
2.8K
15.0K 5.62K
10
13 4
X5
11 2
X5
5
D
C9 C10
0.1
50V
R28
2.21K 22.1K
22.1K
2.8K
CONTACTOR ON
COLD INCH LOCK OUT
512A
6
X5
7
16 3
C7 C11
X4 X5
1.8
621
20V
MC14538B LM2901
NOTES :
8 12
N.A. SINCE COMPONENTS OR CIRCUITRY ON A PRINTED CIRCUIT BOARD MAY CHANGE
WITHOUT AFFECTING THE INTERCHANGEABILITY OF A COMPLETE BOARD, THIS DIAGRAM MAY
NOT SHOW THE EXACT COMPONENTS OR CIRCUITRY OF CONTROLS HAVING A COMMON CODE
NUMBER.
NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual.
ELECTRICAL DIAGRAMS
BACK-UP COIL SUPPLY
A
D2
Q1
1N4007
5A
1A
400V
1000V
R2
2.7
5W 33.2
Q2
3300
300mA
5W 400V
2.7
E
5W
REF
+ -
X2
Q6
TL431
2N4401
Q8
100
20A
R29 500V
15.0K
100
+
2N4403
C1
Q7 REF
X1
5600
35V
TL431
DZ2 -
16V
1.82K
1W
5
621 621 4
512A
22.1K
8
R37
9
D11
3.32K
C14
2700p
50V
621
3.32K
R12
D8
C8
2700pf
50V
1
FILE: M19065_1BA
Ch'ge.Sht.No.
2-20-98A
10-23-98E
22.1K 22.1K 5.62K
13
RST
11 9 7
B /Q
X4
12 10 1
X3
A Q
6
T1 T2
15 14
22.1K
C2
.0047
50V
621
2
X3
10
13
X5 X3
14
11
512A
PULL-IN TIMER
511
100K
22.1K
3
RST
5 7 8
B /Q
X4
4 6 14
X3
A Q
9
T1 T2
1 2
C3
1.0
35V
621
GENERAL INFORMATION
ELECTRICAL SYMBOLS PER E1537
CAPACITORS = MFD ( .022/50V UNLESS OTHERWISE SPECIFIED)
RESISTORS = Ohms ( 1/4W UNLESS OTHERWISE SPECIFIED)
DIODES = 1A, 400V (UNLESS OTHERWISE SPECIFIED)
EQUIP.
THE LINCOLN ELECTRIC CO.
TYPE
CONTACTOR
CLEVELAND, OHIO U.S.A.
SUBJECT
NONE
SCALE
9/28/90
MCW CHK. SUP'S'D'G.
DR. DATE
G-15
TO
CONTACTOR
J9
13
512A
D3
1A
1000V
J9
14
Q3
2N4401
Q5
7.8A
R11 800V
100
2N4403 DZ1
Q4
16V
1W
621
512A
10K
C
R18
2.67K
C4
1.0
820p
B
50V 1W
CURRENT LIMIT
621
LAST NO. USED
R- 37
C- 14
LABELS
D- 11
SUPPLY VOLTAGE NET
POWER SUPPLY SOURCE POINT
COMMON CONNECTION
FRAME CONNECTION
EARTH GROUND CONNECTION
LN-25
SCHEMATIC
SHT.
M19065
NO.