Fault phenomenon 3: The wire mesh welded machine power supply three-phase power supply is normal, the controller stepper motor does not work (the power indicator light is not bright or the brightness is not enough)
Causes and elimination of faults: For wire mesh welded machine that requires special neutral wire, the above-mentioned fault is caused by the fact that if the three-phase power supply is normal, if the zero line of the power supply is not connected or the contact is bad, the cooling fan will be stepped. The electromagnetic governor of the motor controller and the speed regulating motor cannot work normally, as long as the neutral line is connected to solve the problem. Sometimes a control panel power control switch has a bad contact or a control burnout. A similar phenomenon is required, which requires a professional electrician to eliminate it according to the electrical schematic.