Product Overview

The Allen-Bradley 20BC105A0AYNANC0 PowerFlex 700 AC Drive is a high-power industrial variable frequency drive designed to provide adjustable-speed control for compatible three-phase AC motors. Manufactured by Rockwell Automation under the Allen-Bradley brand, this drive is intended for industrial machinery and process systems that require controlled motor operation, configurable performance, and integration with automation equipment.

Variable frequency drives regulate motor speed by controlling the frequency and voltage supplied to the motor. This enables equipment to operate at different speeds according to production requirements rather than relying entirely on fixed-speed operation. In suitable applications, variable-speed control can improve process coordination, reduce mechanical stress during starting and stopping, and support more efficient motor operation.

The 20BC105A0AYNANC0 is rated for a nominal 400 V AC three-phase supply and provides a continuous output current of 105 A. Its power rating is 55 kW for normal-duty applications and 45 kW for heavy-duty applications. These ratings make it suitable for appropriately selected industrial motors used in conveyors, pumps, fans, material-handling equipment, and other machinery requiring substantial motor power.

This PowerFlex 700 configuration includes vector control with 24 V I/O, conformal coating, an installed braking IGBT, and an EMC filter with a common-mode choke. It does not include an installed human interface module (HIM), an internal braking resistor, an internal communication module, or a feedback option.

These configuration details are important when replacing an existing drive. A unit with a similar power rating may have different control interfaces, braking capabilities, communication hardware, or feedback options. Engineers and purchasing teams should therefore verify the complete catalog number before ordering.

The PowerFlex 700 20B series has been discontinued. The 20BC105A0AYNANC0 remains relevant to maintenance, repair, and replacement projects involving existing installations. When sourcing this drive, buyers should confirm the nameplate, condition, hardware configuration, and compatibility with the installed motor-control system.

Technical Specifications

Note: Dimensions and weight are the supplied listing values. Verify the physical unit and manufacturer’s dimensional drawing before finalizing panel layouts, mounting arrangements, or shipping calculations.

Function and Working Principle

The PowerFlex 700 drive controls the electrical power supplied to an AC motor. Its power-conversion circuitry and control functions regulate motor operation according to configured parameters, operating commands, and speed references.

1. Variable-Frequency Motor Control

The operating speed of an AC motor is closely related to the frequency of its electrical supply and the motor’s design. By adjusting the output frequency, the drive can regulate motor speed within the limits of the connected motor and application.

For example, a conveyor may require different speeds during product loading, transportation, and unloading. A variable frequency drive can support these changes without relying exclusively on mechanical speed-control equipment.

For large motors, correct speed regulation also requires consideration of motor cooling, load torque, acceleration requirements, and the drive’s current limits.

2. Vector Control

The 20BC105A0AYNANC0 is configured for vector control. This control method provides more advanced management of motor torque and speed than a basic frequency-only control approach.

When configured correctly for the connected motor, vector control can support improved torque response and speed regulation. This is useful in applications where load conditions vary or where stable motor performance is important during acceleration and deceleration.

The actual performance depends on motor characteristics, parameter settings, commissioning procedures, and the mechanical load. Engineers should follow the manufacturer’s motor setup and tuning instructions rather than assuming that the drive will deliver optimum performance without configuration.

3. Acceleration and Deceleration Control

The drive allows motor acceleration and deceleration to be managed through configured ramp settings. These parameters determine how quickly the motor moves between operating speeds.

Suitable ramp settings can reduce sudden mechanical movement, help protect couplings and gearboxes, and improve the coordination of equipment within a production line.

The correct ramp time depends on load inertia, process requirements, motor current, and braking capability. Rapid deceleration may cause regenerated energy to raise the drive’s DC bus voltage. Since this configuration has no internal braking resistor, braking requirements should be evaluated carefully.

4. Motor Protection and Fault Monitoring

The PowerFlex 700 provides drive protection and diagnostic functions intended to identify abnormal electrical or operating conditions. Depending on the application and configuration, these may include overcurrent, voltage abnormalities, overheating, and motor overload conditions.

Protection settings should be configured for the connected motor and load. The drive does not replace the need for correctly rated upstream protective devices, suitable grounding, emergency-stop arrangements, or application-specific safety systems.

5. Electromagnetic Compatibility

This model includes an EMC filter with a common-mode choke. These components help manage electromagnetic interference when the drive is installed and wired according to the applicable requirements.

Correct grounding, shielding, cable routing, and cabinet layout remain important. An integrated filter does not guarantee compliance under every installation condition.

Role in Industrial Control Systems

The 20BC105A0AYNANC0 can function as a motor-control component within a larger industrial automation system. It is installed between the electrical supply and the motor and receives operating commands through its configured control interfaces.

PLC Integration

A programmable logic controller (PLC) coordinates machine operation by processing signals from sensors, switches, instruments, and other control devices. In an appropriate installation, PLC logic can command the drive to start or stop, change speed references, and respond to process conditions.

This model uses 24 V I/O and does not include an internal communication module in the specified configuration. The exact control method must therefore be confirmed during system design. Engineers should not assume that a specific network connection is available without verifying the installed hardware.

HMI and Operator Control

A human-machine interface provides operators with access to machine status, alarms, and process commands. In many industrial systems, the HMI communicates with the PLC, which coordinates the drive and other equipment.

The 20BC105A0AYNANC0 is supplied without an installed HIM. If local programming or operator access is required, verify the appropriate interface and programming method for the actual configuration.

Process Coordination

The drive can support coordinated operation across a production line. For example, a PLC may adjust conveyor speed according to product flow or coordinate a pump motor with pressure measurements from a process instrument.

For high-power applications, the control strategy should also account for motor starting characteristics, load changes, fault handling, and the consequences of unexpected motor stops.

Industrial Applications

The PowerFlex 700 series is intended for industrial motor-control duties. With a 55 kW normal-duty rating and a 45 kW heavy-duty rating, the 20BC105A0AYNANC0 is designed for substantially larger motor loads than compact low-power drives.

The final application must remain within the drive’s electrical ratings and operating limits.

1. Industrial Conveyor Systems

Large conveyor systems are commonly used in manufacturing, bulk-material handling, warehousing, and production facilities. Variable-speed control can help coordinate material movement with upstream and downstream equipment.

The drive can support controlled acceleration and speed adjustment when correctly sized for the motor and conveyor load. Selection should account for belt inertia, starting torque, load variation, and stopping requirements.

2. Pumping Systems

Industrial pumps may require speed adjustment to respond to changing flow or pressure demands. In suitable systems, a variable frequency drive can regulate pump speed and reduce unnecessary throttling.

Engineers should consider pump characteristics, minimum operating speed, fluid conditions, motor cooling, and the process’s pressure requirements. A drive should be selected according to the actual motor current and duty requirements rather than power rating alone.

3. Fans and Ventilation Equipment

Large industrial fans and ventilation systems often operate under changing airflow requirements. A compatible drive can adjust fan speed to match demand.

In appropriate fan applications, reducing speed can lower energy consumption compared with continuous operation at a higher fixed speed. However, fan-system characteristics, motor operating limits, and the required ventilation level must be evaluated before configuring the drive.

4. Material-Handling Machinery

Industrial material-handling equipment may use high-power motors for lifting-related auxiliaries, transportation, feeding, or movement of heavy products. Controlled acceleration and deceleration can help reduce mechanical shock and improve process coordination.

The drive’s braking configuration must be assessed carefully where loads have significant inertia or require frequent stopping. The installed braking IGBT does not mean that an internal braking resistor is present.

5. Manufacturing and Process Equipment

The 20BC105A0AYNANC0 may be considered for compatible motors used in manufacturing lines, process machinery, and industrial auxiliary systems.

Its suitability depends on motor current, load torque, operating duty, environmental conditions, and the required control functions. For applications involving frequent overloads, rapid cycling, or precise closed-loop control, engineers should confirm that the drive configuration meets the specific performance requirements.

Installation and System Integration

Correct installation supports electrical safety, reliable operation, and the long-term performance of the drive and connected motor.

1. Verify the Electrical Supply

Confirm that the incoming supply matches the drive’s nominal 400 V AC three-phase rating. Verify the supply frequency, motor voltage, motor current, and applicable protective-device requirements.

Do not select a drive based on kilowatt rating alone. The motor’s rated current, overload requirements, operating cycle, and load characteristics must also be considered.

2. Confirm Mounting Dimensions and Clearances

The supplied dimensions are 689.6 × 308.9 × 275.4 mm. Verify these values against the manufacturer’s drawing for the exact hardware configuration before fabricating a panel or mounting structure.

Allow sufficient space for cooling airflow, power and control wiring, maintenance access, and heat dissipation. Large drives can generate considerable heat, so the cabinet’s thermal design must account for the drive and other installed components.

The IP20 / NEMA Type 1 configuration is not a sealed, water-resistant enclosure. Where moisture, conductive dust, or corrosive contaminants may be present, an appropriately rated enclosure and suitable environmental controls are necessary.

3. Power Wiring and Grounding

Install power conductors, motor cables, control wiring, and protective grounding according to the manufacturer’s instructions and applicable electrical codes.

Use conductors and protective devices rated for the application. Maintain appropriate separation between power and sensitive control wiring where required to reduce electrical interference.

Before installation or maintenance, isolate the electrical supply, follow lockout procedures, and verify that hazardous voltage has been removed. Large drives can retain hazardous electrical energy after power is disconnected, so the manufacturer’s discharge and waiting-time instructions must be followed.

4. Configure Motor Parameters

Enter the correct motor nameplate information and configure the control method, command sources, speed references, acceleration and deceleration times, and protection settings.

For vector-control operation, follow the specified motor setup and tuning procedure. Incorrect parameters can lead to poor speed regulation, reduced torque response, or unnecessary trips.

For demanding loads, commissioning should include testing across the intended operating range and under representative load conditions.

5. Evaluate Braking Requirements

The 20BC105A0AYNANC0 has a braking IGBT installed but no internal braking resistor. The IGBT is a switching component in the braking circuit; it does not itself dissipate the regenerated energy.

Applications involving rapid deceleration, high inertia, or frequent stopping may require an approved external braking resistor or another suitable braking arrangement. The braking circuit must be selected and installed according to the manufacturer’s requirements, including resistor sizing, duty cycle, wiring, and protection.

6. Commission the Drive

Before returning the system to service, inspect the power terminals, motor connections, grounding, control wiring, and cooling arrangement.

Test start and stop commands, direction of rotation, speed references, acceleration and deceleration, interlocks, and fault responses. Verify operation under the intended load and document the final parameter settings.

For critical equipment, establish a maintenance record that includes the drive’s catalog number, series, configuration, commissioning settings, and any replacement components.

Compatible System Components

The 20BC105A0AYNANC0 is normally installed as part of a complete motor-control system. Compatibility depends on the electrical ratings, control architecture, and requirements of the application.

These components are examples of equipment that may be used in a complete installation. They are not necessarily supplied with the drive.

Alternative Models and Replacement Considerations

The PowerFlex 700 20B series has been discontinued. When maintaining an existing system, replacement selection should consider electrical performance, control functionality, mechanical dimensions, and the original hardware configuration.

Before approving a replacement, compare:

• Input voltage and phase configuration.
• Continuous output current and overload capability.
• Normal-duty and heavy-duty power ratings.
• Vector-control and speed-regulation requirements.
• Control I/O voltage and terminal assignments.
• Communication and feedback requirements.
• Braking IGBT and external braking-resistor requirements.
• EMC filtering and environmental protection.
• Mounting dimensions, ventilation, and cable access.
• PLC program, parameter settings, and commissioning procedures.

A replacement with a similar power rating is not necessarily a direct substitute. Changes to terminal assignments, communication interfaces, braking arrangements, or control settings may require engineering modifications.

Key Advantages

High-Power Motor Control

With a 55 kW normal-duty rating and a 45 kW heavy-duty rating, the drive supports appropriately sized industrial motors used in demanding motor-control applications.

Vector-Control Capability

Vector control can support improved torque response and speed regulation when the drive is correctly configured for the connected motor and load.

Adjustable Acceleration and Deceleration

Programmable ramps allow engineers to adapt motor response to process requirements and reduce abrupt mechanical transitions.

Integrated Braking IGBT

The installed braking IGBT provides a braking-circuit capability. External braking hardware may still be necessary depending on the application’s stopping requirements and regenerated energy.

EMC Filtering

The included EMC filter with common-mode choke supports electromagnetic compatibility when the drive is installed according to the manufacturer’s instructions.

Conformal Coating

The specified configuration includes conformal coating on the electronic assemblies. This provides additional protection under appropriate conditions but does not make the drive suitable for unrestricted exposure to moisture or corrosive environments.

Industrial Automation Integration

The drive’s control I/O can support integration into suitable automation architectures. The precise control method must be planned around the available hardware and the absence of an internal communication module.

Technical FAQs

1. What is the Allen-Bradley 20BC105A0AYNANC0?

It is a PowerFlex 700 AC drive designed for variable-speed control of compatible three-phase AC motors. It is rated for 400 V AC input, 105 A continuous output, 55 kW normal-duty operation, and 45 kW heavy-duty operation.

2. What is the input voltage?

The nominal input rating is 400 V AC, three-phase. Confirm the drive’s nameplate and installation documentation before connecting power.

3. What is the output current rating?

The continuous output current rating is 105 A. The motor’s rated current and application duty must be checked to determine whether this drive is suitable.

4. Does the drive include a braking resistor?

No. The specified configuration includes a braking IGBT but does not include an internal braking resistor. Depending on the application, an approved external braking resistor or another braking solution may be required.

5. Does this model include an operator panel?

No installed HIM is included in the specified configuration. The front position is supplied with a blank plate. Verify the required programming and operator-access method before commissioning.

6. Can it be integrated with a PLC?

Yes. It can be incorporated into a suitable PLC-based control system using its available control I/O or other properly configured interface hardware. The exact wiring and control method depend on the installation.

7. Is the 20BC105A0AYNANC0 still in production?

No. The PowerFlex 700 20B series was discontinued on November 30, 2023. Buyers should verify stock status, unit condition, and warranty terms when sourcing legacy equipment.

8. Can it replace another PowerFlex 700 model?

Not automatically. Different catalog numbers may have different current ratings, control interfaces, braking options, filtering, and feedback capabilities. Confirm the complete catalog number and system requirements before substitution.

9. What should be checked when purchasing a used drive?

Verify the complete nameplate, catalog number, series, physical condition, terminals, cooling components, and available functional-test information. Confirm whether accessories are included and whether the seller offers a suitable warranty or return policy.

10. Is 37.19 kg the shipping weight?

The supplied 37.19 kg value corresponds to the listed drive weight. The total shipping weight may be higher because of packaging and protective materials. Confirm the actual shipping dimensions and weight with the supplier before arranging transportation.

Procurement and Maintenance Recommendations

Because the PowerFlex 700 20B series is discontinued, procurement should begin with the complete catalog number rather than the product-family name alone.

When sourcing the 20BC105A0AYNANC0, verify the nameplate and confirm the 400 V AC input rating, 105 A continuous output, normal-duty and heavy-duty power ratings, vector-control configuration, conformal coating, EMC filtering, and braking arrangement.

For new-old-stock, used, or refurbished equipment, request clear photographs of the nameplate and terminals. Confirm the unit’s condition, test status, included accessories, warranty coverage, and return terms. Distinguish the drive’s unit weight from the packaged shipping weight.

During maintenance, keep the drive and cabinet clean, maintain the specified airflow, and inspect wiring, grounding, terminals, and cooling components according to the applicable maintenance schedule. Back up parameters and document any changes made during troubleshooting or commissioning.

For replacement projects, evaluate whether the existing motor, PLC logic, control wiring, braking circuit, and cabinet layout can be retained. A newer drive may require parameter conversion, wiring changes, control-program modifications, or recommissioning.

Conclusion

The Allen-Bradley 20BC105A0AYNANC0 PowerFlex 700 AC Drive is a high-power industrial variable frequency drive rated for 400 V AC three-phase input, 105 A continuous output, 55 kW normal-duty operation, and 45 kW heavy-duty operation. Its specified configuration includes vector control with 24 V I/O, conformal coating, an installed braking IGBT, and EMC filtering.

The drive does not include an internal braking resistor, an installed HIM, or an internal communication module. As the PowerFlex 700 20B series has been discontinued, accurate catalog-number verification and detailed compatibility assessment are essential for maintenance, procurement, and replacement projects.