Hello to all experts. My first post here.
I have a cordless (battery-operated) screwdriver which has a 3-phase BLDC motor. Inside the motor, there are 3 hall sensors (type J55 eD) to sense the position of the rotor.
SOMETIMES, when pressing the main switch, the motor does not start, and the only way to get it going is to disconnect the battery pack and reconnect it again. Then the motor works normally again until the next failure which could be in the next hour or the next day.
Any idea why this is happening? Can someone give me a hint as where to look for the reason ? Is it the motor hall sensor, the drive electronics ... ?
Thank you, in advance.
Sam
I have a cordless (battery-operated) screwdriver which has a 3-phase BLDC motor. Inside the motor, there are 3 hall sensors (type J55 eD) to sense the position of the rotor.
SOMETIMES, when pressing the main switch, the motor does not start, and the only way to get it going is to disconnect the battery pack and reconnect it again. Then the motor works normally again until the next failure which could be in the next hour or the next day.
Any idea why this is happening? Can someone give me a hint as where to look for the reason ? Is it the motor hall sensor, the drive electronics ... ?
Thank you, in advance.
Sam
