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  1. #1
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    3phase bldc hall sensor problem

    Hello my friends,
    I am trying to drive a 350 watt,3phase, BLDC motor (DGW07-20j model) with stm32 micro controller. But I have problem with hall sensors because their outputs are not similar to the hall sensors which I have seen on the internet.
    I connected the sensor supply to +5v dc (according to the sensor pcb guide). Then I connected two of hall sensor outputs (2of3) to the oscilloscope channels which is shown in the following picture.
    Unfortunately, I couldn't find the model number of hall sensor or related data-sheet. But I connected the supply and outputs based on printed pinout guide on pcb. You can see these connections in this picture...
    The motor was working while I captured the hall sensor outputs but clearly not not in a good way because the switching phase timing should be adjusted using hall sensor outputs.
    Click image for larger version. 

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  2. #2
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    Re: 3phase bldc hall sensor problem

    Hi,

    I wonder myself how we can help you.
    Without part name / datasheet, without circuit, without test conditions ...
    A scope picture without informations...

    it's almost impossible to give good assistance.

    Klaus
    Please dont contact me via PM, because there is no time to respond to them. No friend requests. Thank you.



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  3. #3
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    Re: 3phase bldc hall sensor problem

    Quote Originally Posted by Anomis View Post
    have problem with hall sensors because their outputs are not similar to the hall sensors which I have seen on the internet.
    There are hall sensors and there are hall switches. Can you confirm which type you have?



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