We have to do a positioning with an incremental encoder on the motorshaft that delivers 6 pulses per rotation.
One rotation of the motor is 22.8 mm of the end actuator.
This will be done with a drive that has no encoder connection (open loop speed control). Resolution of the encoder would not allow it anyway. We will read in the encoder with encoder card on plc. We will do the positioning with some logic in the plc (S7 1500 Siemens), no technology object will be used in the plc.
Positioning does not have to be dynamic.
Accuracy has to be +-0.2 mm on target position.
I have some doubts because the speed loop is open, so low speeds are Always difficult.
Does this seem realistic?
One rotation of the motor is 22.8 mm of the end actuator.
This will be done with a drive that has no encoder connection (open loop speed control). Resolution of the encoder would not allow it anyway. We will read in the encoder with encoder card on plc. We will do the positioning with some logic in the plc (S7 1500 Siemens), no technology object will be used in the plc.
Positioning does not have to be dynamic.
Accuracy has to be +-0.2 mm on target position.
I have some doubts because the speed loop is open, so low speeds are Always difficult.
Does this seem realistic?