Page 46 of 130
DOC No.
：
T202001006
8.3.5 General purpose analog I/O
The analog I/O interface can be used to set or measure the voltage (-10V~10V) in and out of
other equipments.
In order to acquire a high accuracy, it is recommended to comply with the following
instructions:
• Use the GNDPA terminal closest to the I/O. The I/O pair shares a common mode filter.
• Use the same GND (0V) for the equipment and the control box. The analog I/O is not
galvanically isolated from the control box.
• Use a shielded cable or twisted pair. Connect the shielded cable to the “GNDP” terminal
on the “Power” terminal.
The electrical specifications are shown below.
Terminal
Parameter
Min
Type
Max
Unit
Analog input
[AINx - GNDPA]
Voltage
-10
-
10
V
[AINx - GNDPA]
Resistance
-
100
-
Kohm
[AINx - GNDPA]
Resolution
-
12
- bit
Analog output
[AOUTx - GNDPA] Voltage
-10
-
10 V
[AOUTx - GNDPA] Resistance
-
10
-
ohm
[AOUTx - GNDPA] Resolution
-
12
-
bit
The following example shows a way of using the analog I/O.
8.3.5.1 General purpose analog output
The following example illustrates how to control a welding current of a welder with an
analog input.
