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What is the maximum duty cycle of the braking transistor of the ATV32 series drives?

FA177843

24/01/2018

Issue:
What is the maximum duty cycle of the braking transistor of the ATV32 series drives?
Product Line:
Altivar 32
Environment:
All models, All serial numbers.
Cause:
Customer has an application that requires the braking transistor to be used nearly continuously and wants to insure this will not damage the drive.
Resolution:
The braking transistor in the ATV32 series drives is designed to handle Nominal motor power continuously and 150% of nominal motor power for 60 seconds.
An appropriately sized braking resistor must be used that is also capable of handling the required duty cycle.