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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 don´t 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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