I hope someone can help me.
I purchased a 18v15 Motor Controller and I am having some problems.
I’ve got the motor controller driving a Maxon DCX 35L (the 12V version) in signed magnitude PWM mode from a microcontroller.
The setup works well, I can set the speed with the PWM signal.
However, when I try and drive the motor in the opposite direction while it is going at 100% Duty Cycle, ie. toggle the DIR pin, the motor stops spinning and the Short Circuit flag is raised. Following that, if I reset the power, only then will it turn in the opposite direction.
I tested this further and determined if I brake the motor, then only change the direction bit, I can switch rotation. However, simply toggling the direction pin while the motor is driving full speed in one direction, always causes it to enter this fault mode. I’ve tested this with both a 6A Power Supply and a 3cell LIPO battery because the current limiting may be the issue.
Is this a limitation of the motor controller? Do I need to configure it in software to first brake if I want to change direction from full speed? Or is there something I am missing?
Thanks in advance,