Power Board (L8033) Schematic - Lincoln Electric INVERTEC STT Series Service Manual

G-6

Power Board (L8033) Schematic

1.0
R1
D1 D 3
P 7
J 7
5
1 8 V a c
TP1
F R O M A U X I L I A R Y
5 0 V
T R A N S F O R M E R
15J
P 7 J 7
6
D 2 D 4
D Z 6
6.2V
1W
J14
1 R 4 3
F R O M P R O T E C T I O N B D .
C14
J14
2
J14
3
J14
4
D 8 D10
P 6 J 6
5
P 6 J 6
4
T P 2
2 4 V a c
5 0 V
15J
P 6 J 6
9
P 6 J 6
10
D 9 D11
J14 J 7
1 2 1
3 4 5
NOTE: Lincoln Electric assumes no responsibility for liablilities resulting from board level troubleshooting. PC Board repairs will invalidate your factory warranty. Individual Printed Circuit Board Components are not
available from Lincoln Electric. This information is provided for reference only. 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.
+ 1 5 V
5 W
.25
D 5
R 4 4
+ t
IN O U T
X1
L M 3 5 0
A D J
C1
R 3
3 3 0 0 C 2
2 4 3
5 0 V C 3
150
5 0 V
J 7 J 6
3 6
P 7 P 6
TO TO
PILOT CONTROL
LIGHT BOARD
+ 2 4 V
(+) (+15V)
10K
5
R 4 2 R11
100
Q 4 0 100
6 0 0 m A 6
C 5
4 0 V
3 9
2 0 V
C O M
+ 2 4 V
33.2K
+ 2 4 V
R13
A
D12
15.0K
IN X 5 O U T
C O M
L M 3 5 0
C10 C11
A D J
5 0 0
R 2 4
5 0 V
2 6 7
C
C O M
J 6
4 1 5
U N L E S S O T H E R W I S E S P E C I F I E D T O L E R A N C E
O N H O L E S S I Z E S P E R E - 2 0 5 6
8 6 10
ON 2 PLACE DECIMALS IS + .O2
ON 3 PLACE DECIMALS IS + .OO2
O N A L L A N G L E S I S + . 5 O F A D E G R E E
MATERIAL TOLERANCE ("t") TO AGREE
W I T H P U B L I S H E D S T A N D A R D S
ELECTRICAL DIAGRAMS
R 6 9
+
.24
2 6 7
R 7
2 6 7
R 8
D Z 5
D Z 4
12V 12V
1W 1W
J 6 J 6 J 6 J 7
8 3 1 1
P 6 P 6 P 6 P 7
PWM PWM TO TO
SIGNAL SIGNAL CONTROL PILOT
BOARD LIGHT
(COM) (-)
+ 2 4 V
J 7 P 7
2
R E L A Y C O I L S
D14
B
4 7 5 K
1 N 4 9 3 6 J 7 P 7
4
R12
D
Q 5
33.2K
G
7
X 4 R15
IRF513
DZ1 S
15V
1W
C O M
+ 2 4 V
3
4 1
X 4
2
C 7
X 4
U N U S E D
12
L M 2 2 4
14
X 4
11 13
C O M
C O M
4 - 1 3 - 9 5 C
Ch'ge.Sht.No.
3-22-91
3 - 2 9 - 9 6 L
9-11-92B 9 - 2 7 - 9 6 F
6-25-93A 1 0 - 2 5 - 9 6
9-24-93D
DR.
t
Vin + Vc
D15
O U T
1.0A
C 8
X 6 7 G N D
3 0 V
0.1
INV IN 5 0 V
N.I. IN
Vin + Vc
O U T
X 6 8
G N D
C 9 D 7
1.0A
INV IN 0.1
3 0 V
5 0 V
N.I. IN
D
2 6 7 K
R 2 0
D13
33.2K 10K
10
R17 R19 2.21K
8
X 4 R21
C 6
9
1.8
2 0 V
26.7K
C O M
C O M
NOTES :
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.
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)
FILENAME: M16018_6JA
EQUIP.
THE LINCOLN ELECTRIC CO.
T Y P E
CLEVELAND, OHIO U.S.A.
S U B J E C T
NONE
S C A L E
M J H 11/10/92 CHK. SUP'S'D'G.
D A T E
G-6
D16
1.0A
T O P U L S E
3 0 V
F T R A N S F O R M E R
J 7 P 7
8
J 7 P 7
7
E
D 6
1.0A
3 0 V
J 6 P 6
2
1 5
OCI1
CONTROL
C N Y 1 7 - 3
TRIGGER
2 6 4
1 0 0 K
J 6 P 6
7
L A S T N O . U S E D
R- 6 9
C- 14
D- 16 DZ- 6
LABELS
SUPPLY VOLTAGE NET
POWER SUPPLY SOURCE POINT
COMMON CONNECTION
FRAME CONNECTION
EARTH GROUND CONNECTION
INVERTEC
POWER BD SCHEMATIC
SHT.
M M
16018
NO.
INVERTEC STT