Hi,

I have a 313c compact cpu and i want to control a AC motor with incremental encoder as feedback and VFD.

My question is whether it is possible to control a position of this motor with analog output connecting to analog input of the VFD and using technological PID for making making a smooth movement?

I have a max load of 10 tons and i am driving it in two direction.

BR

Dreni

Yes it is possible.

But using a PID for your kind of position control may be a bad choice.

In case of oscillation you will have Problems.

Try to use a way - dependent speed control, that is nearly a P - controller.

To regulate the speed depending from remaining travelway is an old, easy and in fact a P-controler.

Because of switching to slow speed already befor hitting the target, the load will not start oscillating (hopefully) 

Have a look at this fantastic schematic drawing...