I have a doubt about an upgrade of a machine.
On the old machine two parallel belts (not touching eachother and not mechanically coupled) both have a motor, but both motors are driven by one frequency converter (no encoders are used. Now we will upgrade the whole machine.
We want both belts to run the same speeds.
Should using a separate frequency for each motor be much more speed accurate then one drive for both motors?
Using encoders for closed loop control is not our intention, we want to do it open loop anyway, only question is one or two drives.
Has someone experience in this issue?
On the old machine two parallel belts (not touching eachother and not mechanically coupled) both have a motor, but both motors are driven by one frequency converter (no encoders are used. Now we will upgrade the whole machine.
We want both belts to run the same speeds.
Should using a separate frequency for each motor be much more speed accurate then one drive for both motors?
Using encoders for closed loop control is not our intention, we want to do it open loop anyway, only question is one or two drives.
Has someone experience in this issue?