Allen-Bradley 20BH170A0ANNANC0 — Product Specifications, Introduction, Applications, Advantages, and Related Models

1. Product Overview

The Allen-Bradley 20BH170A0ANNANC0 is a catalog number associated with the PowerFlex 700H family of industrial variable-frequency drives. This type of equipment is used to control the speed, torque, acceleration, and deceleration of compatible AC motors in industrial automation systems.

Variable-frequency drives are commonly installed in production facilities where motors need to operate at different speeds according to process requirements. Typical applications include industrial pumps, ventilation fans, material-handling systems, compressors, and other motor-driven machinery.

By regulating the frequency and voltage supplied to the motor, a drive can adjust equipment speed without relying entirely on mechanical throttling or fixed-speed operation. This can improve process flexibility, reduce mechanical stress during starting, and help manage energy consumption when the driven equipment supports variable-speed operation.

The complete catalog number is important because models within the same family may differ in input voltage, output current, enclosure, control interface, braking options, feedback capability, and communication features. The precise electrical ratings and physical specifications for the 20BH170A0ANNANC0 should therefore be confirmed against its nameplate or configuration-specific technical documentation before purchase or installation.

2. Detailed Technical Specifications

The 20BH170A0ANNANC0 is a high-current DC-input variable-frequency drive designed for industrial motor control. Its main electrical characteristics are centered on a 540 V DC input, a 170 A continuous output-current rating, and a 90 kW normal-duty power class.

The following table provides a consolidated technical overview. Physical dimensions for the standard IP20 drive assembly should be verified against the applicable frame drawing; the listed weight is an approximate bare-unit reference rather than a guaranteed shipping weight.

Understanding the Main Ratings

Input voltage and current: The 540 V DC input designation is a key selection requirement. This configuration should not be treated as a conventional drive that can automatically connect to any 380 V, 400 V, 480 V, or 600 V three-phase AC supply. The input power arrangement must match the actual DC-input requirements.

Output current: The continuous 170 A output-current rating is particularly important when selecting a drive for a motor with a substantial load. Motor nameplate current, ambient temperature, overload demand, switching frequency, and installation conditions should be considered together.

Motor power: The 90 kW normal-duty rating and 75 kW heavy-duty rating reflect different operating requirements. Heavy-duty applications often require greater overload capability, so the appropriate rating should be chosen according to the driven machine rather than horsepower alone.

Enclosure protection: IP20 / NEMA/UL Type 1 is intended for appropriate indoor installations. It does not provide the same protection as a sealed outdoor enclosure or a washdown-rated cabinet.

Physical dimensions and weight: Dimensions and mass depend on the drive frame, enclosure, terminal arrangement, and whether the unit is supplied as a standalone drive or part of a packaged assembly. The approximate 14.51 kg reference should not be used as the sole basis for lifting equipment, cabinet design, or freight calculations.

3. Product Introduction

3.1 General Description

The Allen-Bradley 20BH170A0ANNANC0 is part of the PowerFlex 700 industrial AC drive family. It is designed to regulate the speed and operating characteristics of compatible AC motors in applications where fixed-speed operation is insufficient.

In many industrial systems, motors operate for long periods and drive equipment such as pumps, fans, conveyors, mixers, and processing machinery. The required motor speed may vary throughout the day according to production demand, material flow, temperature, pressure, or machine operating conditions.

A variable-frequency drive adjusts the electrical frequency and voltage supplied to the motor, allowing its speed to be controlled according to a configured reference. This provides greater flexibility than operating the motor continuously at a fixed speed.

The 20BH170A0ANNANC0 is intended for applications requiring a relatively high current capacity. Its 170 A continuous output rating and 90 kW normal-duty class make it relevant to larger industrial motor systems, provided the electrical supply and load characteristics match its configuration.

3.2 Operating Principle

A variable-frequency drive controls an AC motor by regulating the electrical power supplied to it. In a typical drive system, the power-conversion stage establishes the appropriate DC bus, and the output stage generates a controlled AC waveform for the motor.

The motor responds to the commanded output frequency, voltage, and control strategy. By changing these values, the drive can regulate operating speed and, depending on the control mode and system design, improve torque response.

For example, a pump does not always need to run at maximum speed. If process demand decreases, the drive can reduce motor speed to help match the flow requirement. Similarly, a conveyor can accelerate gradually instead of applying full torque abruptly at startup.

The 20BH170A0ANNANC0 is identified as a DC-input configuration, so its power-source arrangement requires particular attention. Its supply should be engineered for the specified DC bus rather than assumed to be a standard direct AC-input connection.

3.3 Control and Configuration Features

The drive supports industrial motor-control functions including programmable acceleration and deceleration, current limiting, adjustable output frequency, and selectable motor-control methods.

Vector control can be useful where speed stability and torque response are important. V/Hz control may be suitable for less demanding applications, depending on the motor and driven equipment.

The drive also provides analog and digital I/O for compatible external control devices. These interfaces can be used for operating commands, speed references, status feedback, and control-system integration.

Because the specified configuration has no built-in HIM and no communication module, the commissioning and operation arrangements should be considered before installation. A compatible operator interface or other approved programming method may be needed, and network connectivity may require additional hardware or a different drive configuration.

3.4 Product Lifecycle

The PowerFlex 700 20B catalog family has been discontinued. This matters when selecting the unit for a new installation or maintaining existing equipment.

A discontinued drive may still be encountered in existing factories, spare-parts inventories, repair programs, and equipment refurbishment projects. However, long-term support, availability of compatible accessories, and the cost of a future replacement should be included in maintenance planning.

For an existing machine, retaining the original model may reduce redesign work, but only if the replacement unit’s electrical ratings, firmware, configuration, and control interfaces are compatible.

4. Product Applications

4.1 Industrial Pump Systems

Pumps are widely used in water treatment, industrial cooling, process circulation, liquid transfer, and utility services.

The drive can regulate pump motor speed to suit changes in flow demand. Under suitable operating conditions, this may reduce unnecessary energy consumption and improve process control.

The system designer should check minimum flow, pressure requirements, pump operating limits, and the possibility of cavitation before setting the speed range.

4.2 Industrial Fans and Air-Handling Systems

Large fans are commonly used for ventilation, exhaust, cooling, and air circulation in industrial facilities.

Variable-speed operation allows airflow to be adjusted according to the operating conditions. In suitable fan systems, reducing speed can substantially lower power demand compared with continuously running at full speed.

Fan inertia, motor cooling, vibration, and minimum airflow requirements should be assessed during commissioning.

4.3 Conveyors and Material Handling

Conveyors transport raw materials, finished goods, and components through industrial production lines.

A drive can provide controlled acceleration and deceleration, adjustable conveyor speed, and improved coordination between different stages of production.

The required output-current rating should account for starting torque, conveyor loading, mechanical friction, and any requirement for frequent starts or reversals.

4.4 Mixers and Agitators

Industrial mixers and agitators often operate under changing material viscosity and loading conditions.

Adjustable motor speed can help control mixing intensity, material circulation, and production consistency.

The drive must be sized according to the motor’s current demand and the load’s torque characteristics, particularly when the machine starts with material already inside the vessel.

4.5 Compressors and Process Equipment

Some industrial compressor and process-equipment designs can benefit from adjustable-speed motor control.

The drive may help match output to demand and reduce unnecessary operation at maximum speed.

Compressor type, lubrication, pressure limits, cooling requirements, and manufacturer-approved speed ranges must be checked before applying variable-speed control.

4.6 General Industrial Machinery

The drive may also be considered for compatible motor-driven production equipment that requires adjustable speed, controlled starting, or changes in operating conditions.

Applications involving high inertia, repeated acceleration, or demanding overload conditions require careful drive sizing and parameter configuration.

5. Main Product Advantages

5.1 High Continuous Output-Current Capacity

The 170 A continuous output rating is one of the most important characteristics of this configuration. It allows the drive to be considered for substantial industrial motor loads.

This capacity is useful when a process requires relatively high motor power and stable operation under changing loads. The final selection must still be based on motor current, duty class, environmental conditions, and overload requirements.

5.2 Flexible Speed Regulation

Variable-speed control allows machinery to operate at different speeds instead of relying exclusively on a fixed motor speed.

This is particularly valuable for pumps, fans, and conveyors, where the required operating point may change according to the production process.

When the application supports speed reduction, the drive may help reduce energy consumption and avoid unnecessary mechanical throttling.

5.3 Controlled Acceleration and Deceleration

The drive supports independently programmable acceleration and deceleration times.

Gradual acceleration can reduce sudden mechanical loading during startup. Controlled deceleration can help the machine transition between operating states more smoothly.

The correct ramp settings depend on load inertia, process requirements, stopping distance, and the availability of mechanical braking. Software-controlled ramps do not replace safety-rated stopping equipment where required.

5.4 Vector-Control Capability

Vector control can provide improved speed regulation and torque response compared with basic V/Hz operation in suitable applications.

This may be beneficial when a motor experiences changing loads or when the process requires stable speed under operating disturbances.

The achievable performance depends on the motor data, control configuration, tuning procedure, and whether feedback is available. The identified configuration does not include a motor feedback option.

5.5 Industrial Control Integration

The analog and digital I/O provide a means of connecting the drive to compatible switches, sensors, control relays, and automation equipment.

These connections can support run commands, stop commands, speed references, and operating-status signals.

However, the catalog configuration does not include a communication module. Systems that require a specific industrial network should account for the necessary interface hardware and compatibility requirements.

5.6 Efficient Power Conversion

The stated efficiency is approximately 97.5% at rated current and nominal line voltage.

This is a measure of the drive’s conversion efficiency under the relevant test conditions. It should not be interpreted as a guaranteed 97.5% reduction in the machine’s electricity consumption.

Overall energy performance depends on motor efficiency, mechanical losses, the load profile, actual operating speed, and the process requirements.

5.7 Programmable Operating Parameters

The drive’s programmable functions allow the system designer to configure speed references, ramp times, current limits, and motor-control settings.

This makes it possible to tailor operation to different production conditions rather than relying on one fixed operating profile.

Proper commissioning is essential. Incorrect parameters can lead to poor performance, nuisance trips, excessive current, or unsuitable motor operation.

5.8 Reduced Mechanical Stress

When properly configured, controlled starting and stopping can reduce sudden changes in torque and mechanical loading.

This may benefit couplings, belts, gearboxes, and other mechanical components. The actual improvement depends on the machine design and operating profile, and should not be assumed to eliminate normal wear or maintenance.

5.9 Practical for Existing Industrial Installations

For a factory already using the PowerFlex 700 platform, the original model may be relevant to spare-parts planning, equipment restoration, and maintenance of legacy machinery.

Keeping the same drive family can sometimes reduce changes to mounting, wiring, and control logic.

Nevertheless, an exact replacement must be checked for electrical compatibility and configuration differences. A similar catalog number is not sufficient proof of interchangeability.

6. Brand and Product Series Information

Understanding the Product Series

PowerFlex 700 is the product family, while 20B is the associated catalog family. The full model number identifies the selected electrical rating and option combination.

Two drives can share the same product family and current rating but still have different input requirements, control I/O, braking features, communication capabilities, and enclosure arrangements.

For this reason, the complete catalog number should be retained when requesting a quotation, ordering a spare unit, or planning a replacement.

7. Five Related Models in the Same Series or Product Category

The following models are related candidates for technical evaluation. The first three belong to the broader PowerFlex 700 20B family. The remaining two are examples of closely related PowerFlex 700 configurations with different electrical-input arrangements.

These are not automatically interchangeable with the 20BH170A0ANNANC0. In particular, a 400 V AC-input drive cannot be substituted directly for a 540 V DC-input configuration without checking the complete power system.

7.1 20BH170A0ANNANA0

This model is closely related to the original 20BH170A0ANNANC0 and shares the 170 A, 540 V DC, 90 kW normal-duty rating class.

It may be worth considering when evaluating a replacement within the same general power category. However, the full catalog suffix and configuration must be checked, particularly the EMC filter, control I/O, and other installed options.

7.2 20BH170A0ANNAND0

This is another related catalog configuration within the PowerFlex 700 20B family.

The primary selection task is to confirm whether its control-interface and option configuration match the existing installation. Even when the output-current rating is similar, control-voltage differences can affect wiring and commissioning.

7.3 20BC170A0ANNANN0

This model represents a 400 V AC-input version in the same broad PowerFlex 700 family and current class.

It may be relevant to a system designed around a compatible three-phase AC supply, but it is not a direct replacement for the original DC-input model. The input arrangement, supply protection, control interface, and motor rating must be evaluated as a complete system.

7.4 20BC170A0AYNANA0

This is another related 400 V AC-class PowerFlex 700 configuration.

Its suitability depends on the complete catalog specification, particularly the input voltage, control options, and any configuration-specific features. The precise physical dimensions and weight should be confirmed before purchase.

7.5 How to Select the Best Related Model

The most appropriate candidate depends on the intended use:

– For an existing DC-input installation: Prioritize models with the same 540 V DC input arrangement and matching current and control specifications.

– For an AC-input installation: Consider the applicable AC-input drive family, but do not assume that a similar power rating makes it interchangeable.

– For a high-inertia load: Check overload capability, acceleration time, deceleration requirements, and whether an external braking solution is needed.

– For network-connected machinery: Verify the communication hardware and supported protocol rather than assuming that every model includes a communication module.

– For cabinet replacement: Confirm the frame dimensions, mounting points, terminal locations, ventilation clearance, and actual mass of the supplied assembly.

8. Five Other Allen-Bradley Models to Consider

The following five models represent other widely used product families in the same industrial automation ecosystem. They are included as potential alternatives for different machine-control requirements, not as direct electrical replacements for the 20BH170A0ANNANC0.

The full catalog number determines the exact rating and options. Dimensions and weights are therefore left unconfirmed where the precise hardware configuration has not been established.

8.1 PowerFlex 753

The PowerFlex 753 family is worth considering for industrial motor-control projects that require adjustable speed and a configurable drive architecture.

Its actual suitability depends on the motor current, input voltage, overload class, control method, and required options. It should be evaluated using the complete catalog number rather than the family name alone.

8.2 PowerFlex 755

The PowerFlex 755 family is another candidate for more demanding industrial motor-control applications.

Depending on the selected configuration, it can support a range of motor-control and integration requirements. The specific model must be selected according to the motor, power system, feedback needs, and control architecture.

8.3 PowerFlex 525

The PowerFlex 525 is a compact drive family that can suit smaller motor-control applications.

It may be useful when upgrading auxiliary equipment or designing a new machine that does not require the original 170 A current capacity. It should not be considered a direct substitute for a 90 kW drive unless the actual load and electrical requirements support the change.

8.4 PowerFlex 40

The PowerFlex 40 family is generally associated with compact, general-purpose motor control.

It may be appropriate for small pumps, fans, conveyors, and auxiliary motors. Its role is different from that of a high-current industrial drive, so current rating and overload capability should be checked carefully.

8.5 CompactLogix 5370

The CompactLogix 5370 is a programmable automation controller rather than a motor drive.

It can execute machine logic, coordinate operating sequences, process I/O signals, and communicate with compatible automation devices. In a complete automation system, a controller can work alongside a suitable drive, but it cannot replace the drive’s power-conversion function.

9. Installation and Commissioning Guidelines

9.1 Verify the Power Supply

The 20BH170A0ANNANC0 is identified as a 540 V DC-input configuration. The source of the DC bus and its associated electrical protection must be designed for this requirement.

Before installation, verify the input voltage range, current capacity, protective devices, grounding, conductor sizing, and fault-current characteristics.

Do not connect the drive directly to an AC supply unless the complete drive configuration explicitly supports that arrangement.

9.2 Confirm Motor Nameplate Data

The motor’s rated voltage, current, frequency, speed, power, and operating duty should be recorded before commissioning.

Drive selection must be based on the motor’s electrical requirements and load characteristics. A matching horsepower rating alone is insufficient.

9.3 Check Enclosure and Cooling

The IP20 / NEMA/UL Type 1 enclosure requires an appropriate installation environment.

The cabinet must provide sufficient cooling airflow and clearance around the drive. Dust, moisture, corrosive gases, and excessive ambient temperature can shorten equipment life or cause operational problems.

9.4 Configure the Control Interface

The identified configuration uses 24 V DC/AC control I/O and does not include a communication module.

Check the terminal configuration and the voltage requirements of all external control devices. If the system requires industrial network communications, establish the correct interface before commissioning.

9.5 Set the Motor-Control Parameters

The commissioning procedure should include motor nameplate data, control mode, acceleration and deceleration times, current limits, minimum and maximum speed, and applicable protection settings.

The control method should be selected according to the load. Applications requiring stable torque or speed under changing load conditions may need vector control and appropriate tuning.

9.6 Check Braking Requirements

The identified configuration does not include a braking IGBT or internal braking resistor.

Applications with high inertia or frequent deceleration may require a separately engineered braking solution. The need depends on the load, stopping time, regenerative energy, and mechanical design.

9.7 Plan Maintenance and Replacement

For existing installations, record the full catalog number, hardware revision, installed options, parameter settings, wiring diagrams, and motor data.

Because the original drive family is discontinued, it is sensible to plan for future repair or replacement before the unit fails unexpectedly.

A replacement evaluation should include engineering effort, cabinet modifications, control-system compatibility, spare-parts availability, and the expected service life of the overall machine.

10. Product Selection Checklist

The following checklist can be used when assessing the original drive or comparing alternative models.

11. Final Summary

The Allen-Bradley 20BH170A0ANNANC0 is a PowerFlex 700 industrial variable-frequency drive configuration designed for high-current AC motor control. Its principal identified characteristics are a 540 V DC input, a continuous output-current rating of 170 A, a 90 kW normal-duty rating, and a 75 kW heavy-duty rating.

Its main functions include adjustable motor speed, controlled acceleration and deceleration, configurable current limits, and industrial control integration. Typical applications include pumps, fans, conveyors, mixers, compressors, and other motor-driven machinery.

The key advantages are its high current capacity, flexible motor-control capabilities, programmable operating parameters, and suitability for demanding industrial processes. Its main limitations are the need for a compatible DC-input power arrangement, the absence of built-in braking hardware and a communication module in the identified configuration, and its discontinued lifecycle status.

For related-model selection, the PowerFlex 700 family provides the closest starting point, while the PowerFlex 753, PowerFlex 755, PowerFlex 525, and PowerFlex 40 families offer other options for different motor-control requirements.

Before purchasing or replacing this drive, confirm the exact input arrangement, motor current, duty rating, control interface, enclosure, dimensions, and weight. In particular, the approximate 14.51 kg unit-weight reference should be checked against the actual delivered configuration and its packaging. This avoids relying on an estimated physical specification when planning installation, lifting, transport, or cabinet design.