Chapter 10 Built-in PID Functions
10 - 24
The following figure shows the screen of XGF-AV8A setting in XG5000.
(3) Analog output Module (XGF-DV4A)
The analog output module converts a controller output digital value generated through control operation in
the PLC to 4mA ~ 20mA and transfers it to the driver of the control object. The XGF-DV4A model has 4
channels and its setting can be changed through the I/O parameter setting window, as in XGXGF-AV8A.
Channel 0 is changed to “Operation” mode and the input range is set to 0 ~ 5 V (according to the driver).
The 0 ~ 10000 MV digital output generated through PID control operation is reduced to 1/2000 and then
transferred to the signal of the driver. The following figure shows the screen of XGF-DV4A setting in
XG5000.
(4) Sensor and Driver
Along with the analog output module and analog input module, the sensor and driver respectively function
as the media to transfer the state of the control object to the controller and transfer the controller output to
the control object. The output generated from the sensor should be able to be used as the input of the
analog input module and the output generated from the analog output module should be able to be used
as the input of the driver. For an easy example, if the sensor’s current mode is 4mA ~ 20mA, the analog
input module’s current mode should be 4mA ~ 20mA; if the driver’s voltage mode is 0V ~ 5V, the analog
output module’s voltage mode should be 0V ~ 5V. The output of the analog output module used as the
driving signal of the driver. Using it as the power of the driver may cause malfunction of the PLC due to
power loss.
To Next Page
Loading...