Users are often confused about the role of electromagnetic braking, regenerative braking, and dynamic braking, and choose the wrong accessories.
The dynamic brake is composed of a dynamic braking resistor, which shortens the mechanical feed distance of the servo motor through energy consumption braking in the event of a fault, emergency stop, or power failure.
Regenerative braking means that when the servo motor decelerates or stops, the energy generated by the braking is fed back to the DC bus through the inverter circuit, and absorbed by the resistance-capacitance circuit.
The electromagnetic brake is to lock the shaft of the motor by a mechanical device.
The difference between the three:
(1) The regenerative braking can only work when the servo is working normally, and the motor cannot be braked in the case of fault, emergency stop, power failure, etc. Dynamic brakes and electromagnetic brakes work without power.
(2) The work of regenerative braking is carried out automatically by the system, while the work of dynamic brake and electromagnetic braking requires external relay control.
(3) The electromagnetic brake is generally started after SV and OFF, otherwise the amplifier may be overloaded, and the dynamic brake is generally started after SV, OFF or the main circuit is powered off, otherwise the dynamic braking resistor may be overheated.
