Inductive Motor Brake
IMB-1

PROBLEM

To decelerate the rotation of an AC induction or synchronous motor armature loaded with high inertial mass from high RPM to zero RPM as quickly a possible while heating the field windings as little as evenly as possible.

SOLUTION

Apply evenly distributed current pulses to each of the three-phase field winding leads in such a manner as to create a rotating magnetic field which will induce into the armature a counter-rotating magnetic field which will effect a decelerating force to stop armature rotation.

The IMB-1 is a specialized motor brake that applies these pulses to the windings in such a way as to overcome the inherent inductive reactance and force a maximum of current to flow evenly through the windings while minimizing the heat produced to only I2R losses.

A feature of the IBM-1 is that braking action begins gradually and then ramps to maximum to soften the shock of going from drive to brake. This soft transition assures gentle handling of the load and reduced mechanical stresses on the entire system.

The instant the armature reaches zero speed the braking current quickly tapers off to prevent overkill and its associated heating as well as assuring efficient energy usage.

The maximum level of braking force is adjustable to allow for tailoring to specific needs. The IMB-1 maybe powered by an AC supply of up to 460 volts and it can deliver up to 75 amps of braking current.

For more information about this product, please contact us.