6.3
6.3
6.3
6.3 Exterior
Exterior
Exterior
Exterior connection
connection
connection
connection
(1) For MA-8AD-V voltage input type, the voltage input points connection is as below:
R3
R4
R1
R2
+
-
-
+
R1
R4
R3
R2
V8
DC24V
Exterior DC power
GND
24V
0V
GND
V1
Voltage input
Voltage input
Pressure
gauge
Pressure
gauge
Isolating
process
Isolating
power
Multiplexer
(2) For MA-8AD-A current input type, the current input points connection is as below:
I1
GND
0V
24V
GND
I8
-
+
R2
R1
R4
R3
R1
R3
R4
R1
R2
+
-
R1
Exterior DC power
DC24V
Sensor
Current input
Current input
Sensor
Isolating
process
Isolating
power
Multiplexer
Notes for exterior connection:
�
When connecting the +24V power supply, use the DC power on the connected devices to
prevent from interference.
�
Use shielding cable and single-point ground for shielding layer.
�
0~20mA or 4~20mA output of the module need a exterior power supply of +24V, then the
module adjust the circuit current according to the analog quantity, but the module do not
produce current.
6.4
6.4
6.4
6.4 AD
AD
AD
AD transformation
transformation
transformation
transformation diagram
diagram
diagram
diagram
The relationship between analog quantity and digital quantity are as below:
0~5V analog input
0~10V analog input