G-26
ELECTRICAL DIAGRAMS
INVERTEC STT & STT II
G-26
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Schematic - Current Sense PC Board - All Codes - (S21410)
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.
C1
20K
CW
R
6
2
K
CW
R
2
6.81K
R
7
1.
50
K
R
1
1.00K
R4
50V
150p
C2
X1
1
2
3
1.
00
K
R
3
100
R
5
681K
R11
10
.0
K
R
16
13.7K
R9
681K
R
8
J18
1
X1
7
6
5
13.7K
R10
X1
8
9
10
+VH
-VH
-IC
+IC
X2
1
4
2
3
1.50K
R
14
X3
TL431
REF
8
1
6
10
0
R
12
50V
0.1
C4
LT1014
X1
4
11
50V
50
C3
J18
2
C5
X1
14
13
12
2.94K
R
13
10.0
R15
J18
3
+15V
+15V
100V
3A
Q1
J18
4
CURRENT CAL
FILE: S21410_1BA
SENSOR
3.8V = 38 mA
EXCITATION CURRENT
MIN OFF SET
ADJUSTMENT
HALL EFFECT
100A/V CURRENT OUT
1014
S
1014
1.6V = 16 mA
VREF
SOURCE
21
41
0
1014
THE LINCOLN ELECTRIC CO.
NOTES :
UNLESS OTHERWISE SPECIFIED)
BOARD.
1
J18
2
4
3
EARTH GROUND CONNECTION
THE LINCOLN ELECTRIC CO.
AND IS NOT TO BE REPRODUCED, DISCLOSED OR USED WITHOUT THE EXPRESS PERMISSION OF
VOLTAGE NET
POWER SUPPLY SOURCE POINT
LABELS
FRAME CONNECTION
SUPPLY
1014
ELECTRICAL SYMBOLS PER E1537
21410
UNLESS OTHERWISE SPECIFIED TOLERANCE
RESISTORS = Ohms (
SINCE COMPONENTS OR CIRCUITRY ON
CODE NUMBER.
ON HOLES SIZES PER E-2056
THE INTERCHANGEABILITY
Ch'ge.Sht.No.
SHOW THE EXACT COMPONENTS
OR CIRCUITRY OF
THIS SHEET CONTAINS PROPRIETARY INFORMATION OWNED BY
(
UNLESS OTHERWISE SPECIFIED)
N.A.
OF A COMPLETE
A PRINTED
THIS DIAGRAM MAY NOT
CIRCUIT BOARD
1A, 400V
DIODES =
ON 3 PLACE DECIMALS IS + .OO2
MAY CHANGE
1/4W
GENERAL INFORMATION
CAPACITORS =
.022/50V
WITHOUT AFFECTING
MFD
EQUIP.
NONE
ON 2 PLACE DECIMALS IS + .O2
CONTROLS HAVING A COMMON
ON ALL ANGLES IS + .5 OF A DEGREE
(UNLESS OTHERWISE SPECIFIED)
MATERIAL TOLERANCE ("t") TO AGREE
COMMON CONNECTION
SCHEMATIC
DR.
SUP'S'D'G.
DATE
S
CHK.
SHT.
NO.
MLD
WITH PUBLISHED STANDARDS
SCALE
03/21/94
STT-CURRENT SENSE
SUBJECT
CLEVELAND, OHIO U.S.A.
TYPE
THE LINCOLN ELECTRIC CO.
FV
5-19-95
9-27-96F
11-15-96E
