Allen Bradley 20BD481A3ANNNNC1 Adjustable Frequency AC Drive

FAQ

Q1: What is the Allen-Bradley 20BD481A3ANNNNC1?

A: The 20BD481A3ANNNNC1 is a PowerFlex 700 AC drive designed to control the speed and torque of high-power three-phase AC motors in industrial applications.

Q2: What are the input voltage and current ratings?

A: This drive is designed for a nominal 480 VAC, three-phase supply. Confirm the required input current and upstream protection using the manufacturer’s documentation for the exact configuration.

Q3: What are the normal-duty and heavy-duty power ratings?

A: The specified ratings are 400 HP for normal-duty applications and 350 HP for heavy-duty applications, with a continuous output current of 481 A.

Q4: What are the dimensions of the 20BD481A3ANNNNC1?

A: The listed dimensions are 2349.1 mm high, 549.7 mm wide, and 757.9 mm deep (92.48 × 21.64 × 29.84 inches). Allow additional space for ventilation, wiring, and servicing.

Q5: How much does this AC drive weigh?

A: The listed weight is 509 kg (1,122 lb). Appropriate lifting equipment and a suitable mounting structure are required for handling and installation.

Q6: Does this model include a braking resistor or brake IGBT?

A: No. The specified configuration does not include a brake IGBT or a drive-mounted braking resistor. Evaluate external braking requirements separately.

Q7: What control and feedback features does this model have?

A: It uses vector control with 24 V I/O. The specified configuration has no feedback device and no internal communication module, so confirm any additional control or network requirements before integration.

Q8: What should be checked before replacing an existing drive with this model?

A: Verify the supply voltage, motor current, horsepower rating, overload requirements, enclosure protection, control I/O, feedback requirements, mounting dimensions, and available cabinet space. Because this is a large-frame drive with an IP00 enclosure, installation and protection requirements should be reviewed carefully.