Ask a Question

When are brake resistors required on AC drives?

When are brake resistors required on AC drives?

Product Line:
Altivar drives

ATV61 ATV71 ATV312

Installation / Setup

AC variable frequency drives are commonly used with a variable speed drive system. For applications that require faster deceleration rates, or where motor speeds are exceeding the synchronous speed set by the output frequency of the drive ( an overhauling load condition), a braking resistor is required. Braking resistors increase the braking torque capability of a variable frequency drive, producing faster and more controlled braking. The resistor dissipates regenerated power to keep the bus voltage from exceeding the rated limit of the drive.
Was this helpful?
What can we do to improve the information ?