very hot Stepper motor even when stopped

[1n2]

Hi Guys
Been out of here for quite a while...

Still having 'fun' issues though ..... I will come back to the other issues in another post.

I often have to re-align the beam ( vibration I imagine) well this time I discovered the x axis motor is getting almost too hot to touch and this is with machine standing idle...all settings in the drivers are the same for the X and the Y ...anyone offer any suggestions??

John

[Tech_Marco]

If you're having 1A or above setting on the motor driver, put it down to 0.6A or so. Also, make sure you use "Half current" on the driver setting. When a stepping motor is not spinning, it need current to hole the brake to stop the shaft, just like holding a brake on a car

Marco
(in China)

[1n2]

If you're having 1A or above setting on the motor driver, put it down to 0.6A or so. Also, make sure you use "Half current" on the driver setting. When a stepping motor is not spinning, it need current to hole the brake to stop the shaft, just like holding a brake on a car



Marco
(in China)

Thanks Marco

I will check that ...although the Y axis one stays cool with same setting?

John

[Tech_Marco]

The motor Y is different. It taks 0.8a to 1a depends on the model. That's why it stay cooled when idling.


Marco

[1n2]

Thanks Marco

That's done the trick..if I didn't have to keep re-aligning the beam I would never have discovered that!!

I shall be moving soon and I hope to have a larger workshop and am looking closely at one of the 900 x 600 XY stages kit.

John

[Tech_Marco]

FYI, a stepping motor can sustain temperature up to 80'C before it is getting de-magnetized. So, avoid to have stepping motor temperature go over 80'C

I'm working on a new shipment of 900x600. The departing date is scheduled sometimes on next week and it will take about a month to reach our warehouse in California
Plus, a new design of power Z table (600x400) is completed and 30x unit will be shipped alone with the same shipment.


Marco