Introduction to dc motor controller maintenance knowledge

Small make up today to say with you about maintenance of common sense about dc motor controller. When the dc motor controller can't start, the reasons are as follows: 1. No voltage; 2. Excitation circuit disconnection; 3. Brush circuit disconnection; 4. Have the power but motor not turn. To this end, we can adopt the method are: 1. Test the power and the fuse is normal; 2. Testing field winding and starter is normal; 3. Test the armature winding and brush contact commutator is normal; 4. Testing whether the load is overweight, the armature is jammed.