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3 7 63 1515 0
Current detection circuit
Amplify and rectify potential differences at
two points in the primary-side current circuit
and send it to the AD-port of the MPU and
obtain data for displaying current value.
Constant current output circuit
Remove troubles caused by the potential
differences between the constant current
output and the GND, so that the GND po-
tential differences between the H/U and the
AMP is not overlapped in the AMP to H/U
communication.
TE
L 13942296513
I2C buffer
Using an IC for I2C communication, be-
tween-AMP communication is conducted so
that there will be no trouble from GND po-
tential differences.
www
No.
Item
.
1
IDEL CURRENT
CIRCUIT DESCRIPTION
to OTHER AMP
TRANSMISSON
RECEIVE
5
10
11
ADJUSTMENT
Alignment Point
x
ao
u163
y
VR5 (ALch)
VR6 (ARch)
Connect a DC voltmeter
i
VR7 (BLch)
between check land.
VR8 (BRch)
8
MPU AD-PORT
OUTPUT
0.01
10K
4
6
7
1K
5
IC6
(2/2)
J3
4
3
2
1
8
7
6
5
to H/U
12
11
10
9
REQC
13
H/U-GND
H/U GND
Q Q
3
6 7
1 3
J4
270
2
4
CLK
3
1
7
9
270
8
6
DATA
D91
10u25
10K
Method
Align For
.
2.5mV
XXV-02A
2 9
9 4
2 8
0.01
1K
68
2
1
3
10K
8
IC6
(1/2)
AMP RECT
Q95
Q93
47
47
Q96
CONSTANT
CURRENT
1 5
0 5
8
2 9
9 4
D93
IC9
BOTH DIRECTION
BUFFER
m
Note
co
After Power on
2 minutes
9 9
VOLTAGE
LEVEL
DETECTION
L5
from
MPU
Q90
10K
10K
AMP
GND
2 8
9 9
to MPU
TRANSMISSON
RECEIVE
Fig.
PC board
(X09-)
7
- Quick Links:
- Block Diagram
- Installation
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