- #1
ramonegumpert
- 187
- 0
Hi Experts,![Egg on Face o:) o:)](/styles/physicsforums/xenforo/smilies/eggonface.png)
I am trying to reverse the direction of a spinning dc motor (around 30watts)
but not sure how this should be done.
I have a logic for the switching of the power polarity to the motor but am worried if back emf would be an issue when the motor is spinning and the polarity suddenly reverses. When this happens, the motor would be still spinning in original direction creating back emf and i wonder would the reverse in polarity cause any harm to the motor or controller?
Must the motor be braked or slowed down to near motionless before it can be switched to rotate in opposing direction?
So, I am trying to find a simple way to control the motor to spin in alternating directions.
sincerely
Ramone![Stick Out Tongue :-p :-p](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
![Egg on Face o:) o:)](/styles/physicsforums/xenforo/smilies/eggonface.png)
I am trying to reverse the direction of a spinning dc motor (around 30watts)
but not sure how this should be done.
I have a logic for the switching of the power polarity to the motor but am worried if back emf would be an issue when the motor is spinning and the polarity suddenly reverses. When this happens, the motor would be still spinning in original direction creating back emf and i wonder would the reverse in polarity cause any harm to the motor or controller?
Must the motor be braked or slowed down to near motionless before it can be switched to rotate in opposing direction?
So, I am trying to find a simple way to control the motor to spin in alternating directions.
sincerely
Ramone