Broken winding of stepper motor

[sana_akhtar]

Hey,

Urgent help needed

We are using stepper motor 10V in a coating unit of a printing machine. The stator winding broke more than 3 times in a month and we are clueless why this is happening again and again. Can someone tell me the reason?

Thanks

 

[FvM]

You mean broken, not burned?
- bad motor quality
- excessive vibrations

 

[sana_akhtar]

Yea, winding isnt burned but broken from joint.

We were also thinking of 'vibration'.
Can I say that it is because of resonance of stepper motor?

 

[FvM]

Can I say that it is because of resonance of stepper motor?

The stator won't move or "vibrate" in a resonable mechanical setup.

 

[sana_akhtar]

what can cause vibration in the motor? There is no extra system that is vibrating in our setup.

 

[FvM]

If the motor is solidly mounted, there isn't much that you do about. Using speed ramps will probably reduce motor vibration.

 

[chuckey]

Have you inspected the broken item? It sounds like a mechanical problem or a badly made batch - is the stator impregnated? is it the same motor after being "repaired". Are the leadout wires supported properly? Is it the same wire?
Frank