Allen Bradley 20BC481N0ANNNNC0 PowerFlex 700

FAQ

Q1: What is the Allen-Bradley 20BC481N0ANNNNC0 AC drive?

A: The Allen-Bradley 20BC481N0ANNNNC0 is a PowerFlex 700 variable frequency AC drive designed to control the speed and torque of three-phase AC motors. With a high continuous output current rating of 481 A, it is intended for demanding industrial motor-control applications. Typical uses may include large pumps, fans, conveyors, and other heavy-duty machinery, subject to the motor and load requirements.

Q2: What are the voltage, current, and power ratings of this drive?

A: The supplied specifications list a 380–480 V AC input range, with a nominal input voltage of 400 V AC. The continuous output current is 481 A, with normal-duty power rated at 280 kW and heavy-duty power rated at 240 kW. Select the operating duty according to the application’s load characteristics, motor current, and overload requirements.

Q3: What are the dimensions and weight of the 20BC481N0ANNNNC0?

A: The specified dimensions are 2283.7 × 254.6 × 757.8 mm (H × W × D), and the listed weight is 384 kg. Because this is a large, heavy industrial drive, the installation must provide adequate structural support and suitable lifting equipment. Verify the dimensional orientation and required service clearances with the manufacturer before designing the cabinet or arranging transportation.

Q4: What overload current capabilities does this model provide?

A: The specified one-minute overload current is 530 A, while the three-second overload current is 722 A. These ratings describe short-duration current capability under the applicable operating conditions. The permitted overload profile should be checked against the official technical documentation and the requirements of the connected motor and driven equipment.

Q5: Does this drive include a keypad or operator display?

A: No. The supplied configuration specifies no Human Interface Module (HIM) and uses a blank plate. A compatible operator interface or configuration tool may be required for parameter setup, local monitoring, and troubleshooting. Confirm the correct accessory and compatibility before ordering.

Q6: What control and communication features are included?

A: This model is specified with vector control and 24 V DC I/O, but without a feedback option or communication module. As a result, a network interface such as DeviceNet or EtherNet/IP should not be assumed to be included. If PLC communication or encoder-based feedback is required, verify compatible options and the necessary additional hardware before installation.

Q7: Does the 20BC481N0ANNNNC0 include braking hardware or an EMC filter?

A: No. The supplied specifications indicate that the drive does not include a brake IGBT, internal braking resistor, or CE-compatible EMC filter. Applications requiring rapid deceleration or additional electromagnetic compatibility measures may need separately selected external components. Any braking solution should be sized according to the motor, inertia, deceleration time, and system design.

Q8: What installation and environmental precautions should be considered?

A: The drive has an IP00 open-type enclosure, conformal coating, and forced-air cooling. It must be installed in a suitable protected cabinet or electrical area with adequate airflow, environmental protection, electrical clearances, and maintenance access. Its 384 kg weight also requires appropriate handling and mounting provisions. Before purchasing, verify the complete catalog number, physical condition, included accessories, and current availability with the supplier.