Hello
I am a novice when it comes to using stepper motors. I am familiar with servos and inverters but not stepper motors.
I have a project that needs to rotate an item 180° and then return to the start position by rotating backwards.
I built this using a basic 12vdc motor from RS, two proximity switches and a bunch of relays. This setup worked well but over time has damaged the gearbox because it needs to stop quickly in both directions, hard stops were fitted and the sensors adjusted to remove power to the motor and short the terminals to prevent further movement just prior to it hitting the end stops.
There is now a need to add a delay before it returns to the start position. There is simply no room left to add a timer relay and since it has broken the gearbox I need another solution.
I am considering using a stepper motor to control the motion but my experiments using an Arduino kit results in very slow movement. The half rotation needs to be around 500ms with as little acceleration and deceleration as possible. I am assuming this a limitation of the arduino kit I have.
This is the controller I am considering because of its in-built stepper motor controller, size and cost.
https://barth-elektronik.com/en/lococube-mini-PLCs/lococube-mini-PLC-STG-700.html
And possibly a stepper motor like this one
https://uk.rs-online.com/web/p/stepper-motors/8929328
Here is the criteria:
Rotate a load of approx 500g 180° in 500ms(approx)
Wait for a configurable time delay
Return to start position the same speed as the initial rotation.
System is currently 12vdc but can be upgraded to 24vdc
All the control gear has to fit in a 6" x 5" x 8" space.
What I need help with is the hardware to achieve the above. What criteria should I be looking at to know I will get the speed and control required and durability? Should I be considering stepper motors at all?
Thanks
I am a novice when it comes to using stepper motors. I am familiar with servos and inverters but not stepper motors.
I have a project that needs to rotate an item 180° and then return to the start position by rotating backwards.
I built this using a basic 12vdc motor from RS, two proximity switches and a bunch of relays. This setup worked well but over time has damaged the gearbox because it needs to stop quickly in both directions, hard stops were fitted and the sensors adjusted to remove power to the motor and short the terminals to prevent further movement just prior to it hitting the end stops.
There is now a need to add a delay before it returns to the start position. There is simply no room left to add a timer relay and since it has broken the gearbox I need another solution.
I am considering using a stepper motor to control the motion but my experiments using an Arduino kit results in very slow movement. The half rotation needs to be around 500ms with as little acceleration and deceleration as possible. I am assuming this a limitation of the arduino kit I have.
This is the controller I am considering because of its in-built stepper motor controller, size and cost.
https://barth-elektronik.com/en/lococube-mini-PLCs/lococube-mini-PLC-STG-700.html
And possibly a stepper motor like this one
https://uk.rs-online.com/web/p/stepper-motors/8929328
Here is the criteria:
Rotate a load of approx 500g 180° in 500ms(approx)
Wait for a configurable time delay
Return to start position the same speed as the initial rotation.
System is currently 12vdc but can be upgraded to 24vdc
All the control gear has to fit in a 6" x 5" x 8" space.
What I need help with is the hardware to achieve the above. What criteria should I be looking at to know I will get the speed and control required and durability? Should I be considering stepper motors at all?
Thanks