Hi to all!
I owner Meyra Optimus 2 with R-net control system.
Recently el.wheelchair had on screen error (3D01) and does not move.
Service manual says "M1 Motor Shorted Low"
3D01 - M1 Motor Error
This occurs when the control system detects that the motor connected to M1 on the Power Module has 'short-circuited' to a battery negative connection.
Check the motor, cables and connections to the control system.
If the trip is still present after the above checks have been made, then the controller may be defective.
I replaced two MOSFET (on photo TR5, TR7) three times.
Made rewinding of the motor.
But an issue with error (3D01) still present.
I explain the situation when it happens.
When I drive on high speed and throw joystick to make soft stop. The error (3D01) on screen. And el.wheelchair does not move. Mosfet burned again. And so was three times.
What do you think I need to check more?
Your suggestions and advice.
Maybe driver of mosfet need to be replace (chip 2101).