Dc motor controller in use, can appear sometimes cannot be started, is this why?
Below small make up a solution for everybody and confused.
Lack of power may be the reason is: the power switch didn't together, before the fuse fusing, motor controller of main circuit and control circuit fuse fusing, and so on.
Treatment for this is that a former level fuse, slowly to the motor controller all the parts of the main circuit and control circuit conductors and devices, find out the reason for repair.
Motor controller failure may be the reason is: brush wear serious, jam, spring pressure is not enough, and so on.
, processing way is to disconnect the power supply, multimeter is the resistance of the archives check, find out the reason for repair.
The above is an introduction to the situation of dc motor controller cannot be started, I hope it can help you.