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NJI-669(X)
Terminal layout
(1) OBV-AIG terminal layout
Terminal layout
No.
Signal
Function
Internal circuit
IN
2
＋
－
IN
3
＋
－
IN
4
＋
－
IN
1
＋
－
[Analog input]
1
2
3
4
7
8
5
6
1
IN1+
CH1 input +
In
te
rn
a
l c
irc
u
it
IN1+
IN2+
IN1-
IN2-
120 k
250
Voltage
Current
30 k
IN4+
IN4-
120 k
30 k
······
SW1-1
SW1-2
SW2-2
······
······
Voltage
2
1
3
4
7
8
2
IN1-
CH1 input -
3
IN2+
CH2 input +
4
IN2-
CH2 input -
5
IN3+
CH3 input +
6
IN3-
CH3 input -
7
IN4+
CH4 input +
8
IN4-
CH4 input -
(2) OBV-AIOG terminal layout
Terminal layout
No.
Signal
Function
Internal circuit
IN
2
＋
－
IN
1
＋
－
[Analog input]
OU
T
1
＋
－
OU
T
2
＋
－
5
6
7
8
1
2
3
4
1
IN1+
CH1 input +
Intern
al
c
irc
ui
t
IN1+
IN2+
IN1-
IN2-
120 k
250
Voltage
Current
30 k
SW1-1
SW1-2
2
1
3
4
2
IN1-
CH1 input -
3
IN2+
CH2 input +
4
IN2-
CH2 input -
[Analog output]
OU
T
1
＋
－
OU
T
2
＋
－
IN
2
＋
－
IN
1
＋
－
2
3
4
1
7
8
5
6
5
OUT1+
CH1
Inte
rn
al
ci
rc
uit
⑤
OUT1+
⑦
OUT2+
⑥
OUT1-
⑧
OUT2-
Voltage
Current
SW2-1
SW2-2
*
1
6
OUT1-
CH1 output -
7
OUT2+
CH2
8
OUT2-
CH2 output -
*1 An output method of this product is the method that current flows out from this product. If current flows from
the other equipment, the error may become large by addition to output from this product. So, please confirm
input circuit of the other equipment beforehand.
Example 1) If input circuit of the other equipment is non-isolated between channels, and the sneak
current flows from other channels.
Example 2) If a pull-up resister is inserted in input of the other equipment, and current flows out from
there.
When it becomes the circuit configuration that current flows from the other equipment into this product, you
can reduce the error by putting resistor (more than 1 k
) between input terminals of the other equipment.
