Allen Bradley 20BC260A3ANNANC0 PowerFlex 700

FAQ

Q1: What is the Allen-Bradley 20BC260A3ANNANC0 PowerFlex 700 AC Drive?

A: The Allen-Bradley 20BC260A3ANNANC0 is an industrial AC drive in the PowerFlex 700 series. It is designed to regulate the speed and torque of three-phase AC motors used in industrial machinery and automated production systems. With a continuous output current of 260 A, it supports applications requiring substantial motor power and adjustable operating speeds. Its supported motor-control methods include V/Hz, Sensorless Vector Control, and Vector Control, allowing users to select an appropriate control strategy for their application.

Q2: What are the electrical ratings of the 20BC260A3ANNANC0?

A: The drive has a nominal input voltage of 400 VAC and supports a three-phase supply within the 380–480 VAC range. Its specified input current is 255 A at 400 VAC, with an input power rating of 177 kVA. The continuous output current is 260 A, with a normal-duty power rating of 132 kW and a heavy-duty rating of 110 kW. When selecting this drive, compare its current and power ratings with the motor nameplate and actual load requirements. The correct duty rating depends on the application’s overload demands and operating conditions.

Q3: Which motor-control modes and speed-regulation features does this drive support?

A: The 20BC260A3ANNANC0 supports V/Hz control, Sensorless Vector Control, and Vector Control. V/Hz control is suitable for many general-purpose variable-speed applications, while vector-based control can offer improved speed and torque performance. The specified speed regulation is 0.1% of base speed in Vector Control mode without feedback, and torque regulation is ±5% without feedback. Frequency accuracy is specified as ±0.01% of the set output frequency when using a digital input. Actual performance depends on motor tuning, parameter settings, and operating conditions.

Q4: Does the 20BC260A3ANNANC0 include a communication module?

A: This configuration is listed without an internal communication module. Network connectivity should therefore be checked carefully if the drive must communicate with a PLC, distributed control system, or plant monitoring network. Depending on the required application, a compatible optional communication module may be necessary. Before ordering, confirm the complete catalog number and the required protocol, such as EtherNet/IP, DeviceNet, or ControlNet. These network options should not be assumed to be installed on the unit unless the actual hardware configuration confirms it.

Q5: Does this model have a built-in braking resistor or brake IGBT?

A: No. The specified configuration has neither a built-in brake IGBT nor an internal braking resistor. It supports programmable stop modes, including Coast, DC Brake, Fast Brake, Ramp-to-Hold, and S-Curve, but these functions do not mean that a complete dynamic braking system is included. If the motor drives a high-inertia load or needs frequent, rapid deceleration, evaluate the braking requirements before installation. Any external braking equipment must be compatible with the drive and installed according to the manufacturer’s instructions.

Q6: What control interface and protection features are available?

A: The drive is specified with 24V DC control I/O and an LCD display with a full numeric keypad and programming keys. Its I/O configuration includes 2 analog inputs, 2 analog outputs, 6 digital inputs, and 3 digital outputs. Additional features include Class 10 motor overload protection, programmable acceleration and deceleration times from 0 to 3600 seconds, and an EMC filter with a common-mode choke. These functions support motor control, parameter adjustment, and integration with external control circuits. Correct wiring, grounding, and parameter configuration are essential for reliable operation.

Q7: What are the dimensions, weight, and environmental requirements?

A: The listed dimensions are 976.3 × 403.9 × 275.5 mm, and the weight is 71.44 kg. The enclosure rating is IP20 / NEMA/UL Type 1, so the drive should be installed in a suitable cabinet or protected environment where necessary. The specified operating temperature is 0–50 °C, with relative humidity of 5–95% without condensation. The maximum installation altitude is 1000 m without derating. Allow sufficient space for mounting, cable access, and heat dissipation, and ensure that the mounting structure can support the drive’s weight.

Q8: What should buyers check before purchasing the 20BC260A3ANNANC0?

A: Buyers should verify the full catalog number, supply voltage, motor current, power requirements, duty rating, control I/O, communication requirements, and installation dimensions. Particular attention should be paid to the absence of an internal communication module, brake IGBT, and braking resistor. If network communication or dynamic braking is required, confirm the necessary accessories before placing an order. Also verify the actual unit’s nameplate, condition, warranty, and included components. The product is listed as new and in stock, with T/T and Western Union as payment methods; current availability and delivery arrangements should be confirmed with the supplier.

20BC260A3ANNANC0 Allen Bradley

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