Dynamic Braking

Dynamic braking is a technique for electrical motor braking. The mechanical energy is converted to heat or electrical energy in order to slow and stop the motion.

With conventional braking systems, when the servo amplifier output power shuts off, the motor acts as a generator and converts the kinetic energy of the rotating motor and load into electrical energy.

Elmo’s highly reliable servo drives are design to reduce the servo braking time and dissipate the return energy from the motor when power off, by shortening all motor phases (to ground) while the drive is in Disable Mode
The following graphs shows motor braking results time with and without a dynamic braking.

 Without dynamic braking

Mo=0 command during motion, without dynamic brake test results

* MO =0 – Servo is off

With dynamic braking

Mo=0 command during motion with dynamic brake implementation

Design Features

• Reduced mechanical braking time
• Quickly dissipating the rotational energy stored in a servo motor when power off

For more information please contact our motion control experts.