7 replies to this topic

[David_Lee]

Hi,
My motor is very hot. Any suggestion to reduce the temperature is appreciated.
Motor information:

1. Stepper motor

2. 24V power supply

3. Phase control

4. Drive IC MC1413 of on semiconductor

Thanks and best regards

David (Email: lizh@calcomp.com.sg)

[TUGCE]

Hi,
It can be a lot of reason to hot motor, you should check the current which the motor under the load. This current must be equal the current which written on the nameplate.
Reason of over temperature;
Overload
the deviation on the shaft line

[TUGCE]

Hi,
It can be a lot of reason to hot motor, you should check the current which the motor under the load. This current must be equal the current which written on the nameplate.
Reason of over temperature;
Overload
the deviation on the shaft line

[David_Lee]

Hi,

Just as you said, the current is high. But it is not becasue of the overload since even I free the motor, the current is still high.

Any further suggestion?

Thanks

David

[BigMax]

Hi all,

Stepper motors are usually fairly inefficient and as a result can run surprisingly warm.

Is the stepper motor actually rated at 24VDC? If so, without series resistors? Is it required to run at low speed for extended periods (low speeds produce more loss)?

Perhaps the temperature rise is 'normal'.

Cheers!

BigMax:P

[grobert]

If your supply voltage matches the nameplate voltage and your current with no load is greater than motor nameplate, you have a problem. I would run motor across the line and see if amps are still high. You may need to replace the motor and or drive. As far as the heat , typical motor rated at 40deg. C. which can be quite warm to the touch. The ambient temperature and air space around motor can also effect a motors self cooling abillity. Have you used a temp probe to read actual temp?

I must add that this is typical motor troubleshooting. I have no real experience with "stepper" motors.

[Raka]

More info about the motor?