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            Judge whether the indicator light of DC motor controller is normal

            DC motor can judge whether it is normal or faulty according to the indicator light of motor controller flashing. Every time the indicator light of DC motor controller flickers, it has its specific significance. The problems in DC motor are analyzed carefully and solved accordingly.

            1. The normal operation of the weak signal control part is about S / time.

            2. The slow flash circuit for 2 times is in the braking state.

            3. There is parameter error or open circuit from constantan to lm358 for 3 times of slow flash.

            4. Slow flashing 4 times, there is a fault from the upper bridge to the driver to the output MOS.

            5. 5 times of slow flashing from lower bridge to drive to output MOS is faulty.

            6. The selection of 60 ° 120 ° slow flash for 6 times is not connected with the phase sequence of motor Hall.

            7. During 7 times of slow flashover operation, the reference level of excessive current protection, too long or short circuit detection of constantan is biased to the bottom (the normal value is 20K to 1.2k partial voltage).


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            DC motor controller


            DC motor controller related:

            1. Control mode of DC motor controller

            2. Micro controller driving of H-bridge powered by permanent magnet DC motor


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