Out of interest, I'd like some thoughts on what would be considered best practice with regards to a 2-position turntable control scheme (see attached image for reference).
The turntable rotates 90 degrees to its turned position, then returns back to its home position.
The turntable has a conveyor section attached and transfers products between adjacent conveyors.
The SEW motor that drives the slewing ring via a PowerFlex 525 0.4kW VFD to rotate the turntable has an EK8S incremental encoder 1024/4096 analog resolution wired back to an Allen-Bradley 1734-IK POINT I/O 24V DC Incremental Encoder Module.
Given this information, what would you consider best practice to control the rotation and stop positions?
Points for consideration:
Sorry if this may seem vague, I'm trying to get responses without giving away its current method of operation to compare. If any other information is needed, please ask.
The turntable rotates 90 degrees to its turned position, then returns back to its home position.
The turntable has a conveyor section attached and transfers products between adjacent conveyors.
The SEW motor that drives the slewing ring via a PowerFlex 525 0.4kW VFD to rotate the turntable has an EK8S incremental encoder 1024/4096 analog resolution wired back to an Allen-Bradley 1734-IK POINT I/O 24V DC Incremental Encoder Module.
Given this information, what would you consider best practice to control the rotation and stop positions?
Points for consideration:
- Inductive proximity switches
- Use of incremental encoder
- Overtravel protection
- Slowdown before reaching position
Sorry if this may seem vague, I'm trying to get responses without giving away its current method of operation to compare. If any other information is needed, please ask.