Can someone shed some light on the theory of operation for ac motors. I had a customer who had a toyota with twin drive ac motor controllers, the sauer danfoss motion drives. One of the motors had a shorted winding and was sent away for repairs.
The motor was repaired and refit last week, but the problem now is that when in forward the motor goes backwards and when put in reverse the motor goes forward.
Can I change the power cables in order for it to work correctly? Or has the motor somehow been rebuilt incorrectly?
(The other motor still works correctly its just the motor that has been repaired.)
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do not forget to discharge the inverters
HI again
Thanks for the posts much appreciated, will try switching on Monday and see if it does the trick.
uvwuvwuvwuvwuvwuvw = rotation in one direction
wvuwvuwvuwvuwvuwvu = rotation in the opposite direction
therefore changing any two cables will sequence the motor in the other direction.
switch any two of the uvw cables and that will change the direction- controller or motor
Hi Damo
I am not shane sorry, but did work for him before to starting on my own, you may have me mistaken somehow sorry. I would still appreciate the info cheers.
Will look into that sensor Andy, cheers.
Hi Damo,
Could you send that to me to?
my e-mail is in my profile.
cheers,
The direction and control of an AC drive motor comes from the sensor bearing in the motor. I would guess that either you have the wrong sensor bearing or it is wired up incorrectly, or maybe just in the wrong way round.
what the model shane...i have info on the workings of ac motors i will send to u ps i sent that info on yale /hyster
regards damo
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