When are brake resistors required on AC Altivar drives?
Issue:
Are brake resistors required on AC drives?
Product Line:
Altivar drives
Environment:
ATV61 ATV71 ATV312
Cause:
Installation / Setup
Resolution:
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.
Are brake resistors required on AC drives?
Product Line:
Altivar drives
Environment:
ATV61 ATV71 ATV312
Cause:
Installation / Setup
Resolution:
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.
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