Jump to content


Photo

Motor is very hot


  • Please log in to reply
7 replies to this topic

#1 David_Lee

David_Lee

    Junior Member

  • Members
  • PipPip
  • 2 posts

Posted 20 August 2003 - 09:09 AM

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)

#2 TUGCE

TUGCE

    Junior Member

  • Members
  • PipPip
  • 6 posts
  • Location:İstanbul
  • Interests:I'm Electrical Engineer, and I've been working in a company which is product squirrel cage motors since 2001

Posted 20 August 2003 - 12:53 PM

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

#3 TUGCE

TUGCE

    Junior Member

  • Members
  • PipPip
  • 6 posts
  • Location:İstanbul
  • Interests:I'm Electrical Engineer, and I've been working in a company which is product squirrel cage motors since 2001

Posted 20 August 2003 - 12:54 PM

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

#4 David_Lee

David_Lee

    Junior Member

  • Members
  • PipPip
  • 2 posts

Posted 21 August 2003 - 12:12 PM

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

#5 BigMax

BigMax

    Intermediate Member

  • Full Member
  • PipPipPip
  • 43 posts
  • Location:Melbourne, Australia

Posted 09 September 2003 - 07:05 AM

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

#6 grobert

grobert

    Intermediate Member

  • Members
  • PipPipPip
  • 24 posts
  • Location:houston

Posted 11 October 2003 - 05:51 PM

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.

#7 Raka

Raka

    Junior Member

  • Members
  • PipPip
  • 5 posts

Posted 28 October 2003 - 08:51 AM

More info about the motor?

#8 Guest__*

Guest__*
  • Guests

Posted 16 February 2005 - 12:03 AM

Hi ,
I dont have much experience on motor but i can have suggestions:

1. check the frequency of your motor..motor of 50 hz if run on 60 hz system will produce more torque which cause increase in your motor speed which will in turn produce more current than its normal rating.More current means more heat.......
2.check the quality of your controller........




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users