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Does the Altivar 71 DB Chopper turn on when the drive is idle or only when it is running?

The ATV71 starts the DB transistor when the bus voltage is about 393 volts on 208-230 VAC drives and about 786 VDC for 460-480 VAC drives, even if the drive is not running the motor.
The ATV58 does not gate the DB transistor unles it is also gating the IGBT`s.


CTA-ID : 2025430
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