20BD077A3ANNACC1

The Allen Bradley 20BD077A3ANNACC1 is an advanced AC drive designed for high-performance applications, specifically tailored for environments operating at 480 V mains voltage. It effectively delivers a continuous output current of 77A, with the ability to endure intermittent loads of 110% for one minute and 150% for a brief duration of three seconds. This functionality makes it well-suited for dynamic control requirements in various industrial sectors.

The drive also includes a power ride-thru capability of 15 milliseconds at full load, ensuring reliability during transient disturbances. It is equipped with two analogue outputs, assisting in the monitoring and control of the connected systems. The input current rating stands at 84.5A at 650V DC, making it compatible with 60 Hp applications in normal duty operations.

Significantly, the unit does not include an internal brake resistor, which may be relevant for applications utilizing external braking solutions. The maximum ratings for protection include a circuit breaker capable of supporting up to 300A at 480V AC in normal duty and a motor circuit protector rated for 100A under similar conditions.

For enhanced operational flexibility, the carrier frequency can be configured at 2, 4, 8, or 10 kHz, while the drive rating is primarily based on a 4 kHz configuration. Additionally, the logic control ride-thru time allows for a minimum of 0.5 seconds, with a typical response of 2 seconds, underlying the drive’s resilience during fluctuations. The encoder quadrature function supports a 90-degree detection with a tolerance of ±27 degrees at 25 °C (77 °F). The AC input overvoltage trip threshold is set at 570V AC at 480V, ensuring the protection of critical motor components.