20DD385A3ENNBNNAN

The 20DD385A3ENNBNNAN model from Allen-Bradley is a sophisticated adjustable frequency drive designed for demanding industrial applications. This unit effectively operates utilizing a three-phase input at a nominal voltage of 480V AC and can withstand a normal-duty current of 385 amps. It has been specifically constructed to ensure reliability in various operational situations.

Encased in an IP20-rated NEMA Type 1 enclosure, the drive provides adequate protection for indoor environments. It does not utilize a braking system, but it includes an adjustable bus undervoltage trip feature to avoid system faults due to insufficient voltage levels. A microprocessor actively monitors the integrated heat sink thermistor, which prevents overheating through automatic temperature regulation.

User interaction is facilitated through a full numeric LCD, which allows operators straightforward access to settings and performance data. The drive also incorporates a logic control ride-thru duration of 0.25 seconds when not actively running, ensuring minimal disruption in performance during electrical fluctuations. Additionally, it supports a power ride-thru function, which can sustain operation for 15 milliseconds at full load, providing extra stability to critical processes.