Braking Resistors

If a motor brakes or a drive controller reduces its speed set value, the kinetic energy of the drive system is fed back to the DC link capacitors of the drive controller. However the capacity of these capacitors is limited to a defined maximum voltage. From a certain voltage level, an integrated brake chopper connects the braking resistor as a consumer – this absorbs the existing braking energy, the voltage lowers and the kinetic energy is mostly converted to heat. In addition to the different drive controllers, STOBER offers corresponding braking resistors in different sizes and performance classes.