GND
R1
R3
R2
+
-
-
+
R2
R3
R1
DC24V
VO3
24V
0V
VO1
GND
Exterior DC power
Inverter
Inverter
Voltage output
Voltage output
VCC
Isolating
power
Isolating
process
(2) For MA-4DA, current output points connection is as below:
DC power
AO
GND
0V
24V
GND
A3
R2
R4
R3
+
-
+
-
R1
R1
-
+
-
+
R3
R4
R2
18V
18V
18V
18V
Exterior DC power
DC24V
Current output
Recorder
Current output
Isolating
power
Proportional
valve
Notice 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.