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Topic: CCW of BLDC (Read 2520 times) previous topic - next topic

mythunter

hello there!
can somebody plz tell me about the CCW programming for BLDC motors... waiting for your kind concerns!

Senso

Just swap any two motor wires to invert the rotation way.
If you want forward and reverse you need to buy an ESC with that capability.

mythunter

so it doesn't have to do anything with the programming of the controller?

and far as i know, BLDC comes with 3 wires, two of which are positive, and remaining one is for ground..., if we change any of the wire, the motor may get burned... :-/

retrolefty

Quote
and far as i know, BLDC comes with 3 wires, two of which are positive, and remaining one is for ground..., if we change any of the wire, the motor may get burned...  


No, the three wires are normally part of a three phase power switching circuit, one would never ground one wire permanently.

Lefty

Yankee

What controller are you using?

theMPloc

@yankee: sorry for highjacking this thread. have you got my pm? i have some questions regarding BOB c10 easydriver and emc2. i would be glad if you could contact me. thank you.

Senso

Quote
so it doesn't have to do anything with the programming of the controller?

and far as i know, BLDC comes with 3 wires, two of which are positive, and remaining one is for ground..., if we change any of the wire, the motor may get burned... Undecided


As already said, its a three phase motor, all the three wires can be positive, ground or back-EMF sensing wires, it just depends in which phase the motor is at a given moment, just swap any two of then, believe me.

mythunter

@ yankee
we'll be using atmega2560...! any help will be appreciated! :)

@ senso
hmm... ok! i'll update you soon regarding this, thanks anyways :)

Peter_B

There is an excellent tutorial on how to control BLDC motors at;
http://www.atmel.com/dyn/resources/prod_documents/doc4987.pdf

The short answer is you can change direction with code or by swapping ant two wires as noted elsewhere in this thread.

Peter B.
peter_b

mythunter

thanks peter for the link... its really useful! :)

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