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Allen-Bradley 20G1F3E295LNDNNNNN — Detailed Product Specifications, Introduction, Applications, Advantages and Related Models

The 20G1F3E295LNDNNNNN is a high-power industrial AC drive belonging to the PowerFlex 755 family. It is intended for demanding variable-speed motor applications where reliable speed control, torque control, automation integration and high electrical capacity are required.

The model is part of the large-frame PowerFlex 755 range and is designed for industrial installations rather than small machine-level applications. Its large-frame construction makes it suitable for substantial motors used in conveyors, pumps, fans, compressors, process equipment and other heavy-duty machinery.

The information below is organized for product introduction, technical documentation, quotation material, equipment catalogs and industrial product descriptions. Physical dimensions and weight are presented as reference values for the large-frame cabinet configuration; the final dimensions and shipping weight can change according to enclosure, cabinet depth, options and system configuration.

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1. Basic Product Information

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2. Brand and Product Series

Brand

Allen-Bradley

Allen-Bradley is the brand under which this industrial drive product is identified.

Product Family

PowerFlex

Product Series

PowerFlex 755

The PowerFlex 755 series is designed for advanced industrial AC motor control. Compared with compact general-purpose drives, it provides a broader range of control, feedback, communication and application options.

The series is particularly appropriate for machines in which motor speed and torque need to be coordinated with an industrial automation system.

The 20G1F3E295LNDNNNNN represents a large-frame configuration intended for substantially higher-power applications than compact drive products.

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3. Model Number Interpretation

The catalog number contains a series of configuration characters rather than being merely a simple product identification number.

The beginning of the model number, 20G, identifies the PowerFlex 755 family.

The following configuration characters identify the specific construction, voltage class, frame/rating and other options.

The F portion identifies the large Frame 9 configuration used by this class of drive.

The 295 section identifies the approximate current class of the drive configuration.

The ending portion, LNDNNNNN, represents additional configuration information associated with the selected drive arrangement.

For industrial purchasing and engineering purposes, the complete catalog number should always be used. Individual characters should not be removed when specifying the equipment because the complete configuration determines the actual electrical and mechanical characteristics.

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4. Main Technical Parameters

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5. Electrical Performance

The 295 A class output rating is the key electrical characteristic of this configuration.

The actual motor size that can be controlled should not be selected solely by converting current into horsepower. Motor voltage, motor efficiency, power factor, duty classification, overload requirements, ambient temperature and operating profile all affect the final drive selection.

For example, a motor that operates continuously at a relatively stable load can have different drive requirements from a motor that repeatedly accelerates heavy mechanical loads.

This is particularly important for conveyors, crushers, mixers and other equipment where the motor can experience high transient torque requirements.

The 295 A rating therefore needs to be considered together with the application’s duty requirements rather than being treated as an independent number.

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6. Duty Classification

The model is configured around a Normal Duty application.

Duty classification is an important concept when selecting an industrial AC drive.

A motor used on a fan or centrifugal pump may have relatively predictable loading characteristics. A conveyor or mixer can have much higher starting and transient torque requirements.

The drive rating therefore needs to be selected according to the actual application.

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7. Dimensions and Weight

The 20G1F3E295LNDNNNNN is a large Frame 9 industrial drive.

This means that its physical installation requirements are significantly different from compact variable-frequency drives.

The dimensions and weight should be treated as engineering reference values because the final configuration can include additional equipment.

For transportation, the approximately 1246 kg weight is particularly important.

The installation location should have sufficient floor loading capacity and enough clearance for lifting, positioning, cable installation and maintenance.

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8. Product Introduction

The 20G1F3E295LNDNNNNN is a high-power AC variable-frequency drive designed to control industrial motors with precision and stability.

Its primary function is to convert incoming electrical power into a controlled output suitable for driving an AC motor at the required speed and torque.

This allows the motor to operate according to the actual requirements of the machine rather than simply operating at a fixed speed.

In industrial applications, this can be particularly valuable where production speed changes, controlled acceleration, controlled stopping or torque regulation are required.

The drive can also operate as part of a larger industrial automation system. This allows motor operation to be coordinated with sensors, programmable controllers, production equipment and other drives.

The result is a complete motor-control platform suitable for large industrial machines.

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9. Major Product Features

9.1 High-current motor control

The 295 A class rating gives this configuration the capacity required for large industrial motors.

This makes it suitable for equipment that is beyond the practical range of small general-purpose drives.

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9.2 Advanced speed control

The drive can regulate motor speed according to a programmed reference.

Speed references can come from local controls, external control equipment or an industrial automation system.

This allows production machinery to operate at different speeds depending on process requirements.

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9.3 Controlled acceleration

Large motors can produce significant mechanical shock when started directly from the power supply.

A variable-frequency drive can gradually increase the motor speed.

This provides smoother starting and can reduce stress on:

• Gearboxes
• Couplings
• Shafts
• Belts
• Chains
• Conveyor systems
• Pumps
• Mechanical transmission components

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9.4 Controlled deceleration

The drive can also manage the motor’s stopping process.

Controlled deceleration can be useful when the machine contains substantial rotating inertia.

This can help prevent sudden mechanical loading and improve the overall behavior of the machine.

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9.5 Torque control

The PowerFlex 755 platform is intended for applications in which torque control can be important.

This is particularly relevant to:

• Conveyors
• Mixers
• Process machinery
• Material-handling systems
• Heavy mechanical equipment
• Machines with changing loads

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9.6 Feedback capability

The drive platform supports feedback options for applications requiring improved motor-speed regulation.

Depending on the final configuration, feedback can be used for applications requiring more precise control than basic open-loop operation.

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10. Product Advantages

High Power Capacity

The primary advantage of the 20G1F3E295LNDNNNNN is its ability to control large industrial motors.

The Frame 9 construction provides the physical and electrical capacity necessary for high-power applications.

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Stable Motor Operation

The drive allows the motor to accelerate and decelerate according to programmed parameters.

This can improve machine behavior and reduce abrupt mechanical changes.

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Variable-Speed Capability

The motor does not have to operate continuously at a single fixed speed.

The drive can adjust speed according to the production process.

This is particularly useful for pumps, fans, conveyors and process machinery.

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Automation Integration

The drive can form part of an industrial automation architecture.

This makes it possible to coordinate motor operation with other equipment.

For example, a controller can send a speed reference to the drive while monitoring operating status and fault information.

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Flexible Application

The PowerFlex 755 architecture is suitable for a wide range of motor-control applications.

The same general platform can be adapted to different motors, feedback arrangements and automation systems through the appropriate configuration.

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Large-Frame Industrial Construction

The Frame 9 design is intended for large industrial equipment.

This makes it appropriate for applications where electrical current, mechanical loading and thermal requirements are substantially greater than those of compact drives.

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11. Typical Applications

Conveyor Systems

Large conveyors are one of the most common applications for high-power variable-frequency drives.

The motor may need to start while the conveyor is already carrying a heavy load.

The drive can gradually accelerate the motor instead of applying the full mechanical load immediately.

Speed can also be adjusted according to production requirements.

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Pumps

Large pumps frequently benefit from variable-speed operation.

The drive can adjust pump motor speed according to the required flow or process conditions.

Typical applications include:

• Industrial water systems
• Cooling systems
• Process circulation
• Water treatment
• Industrial fluid transfer

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Large Fans

Industrial ventilation fans can require large motors.

A variable-frequency drive allows fan speed to be adjusted according to airflow requirements.

This is useful in:

• Factory ventilation
• Process ventilation
• Cooling systems
• Industrial exhaust systems

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Compressors

Large compressors can require substantial motor power.

The drive provides controlled acceleration and motor operation while allowing the compressor to be incorporated into a larger automated process.

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Mixers

Industrial mixers can experience rapidly changing torque requirements.

The drive can provide controlled motor speed and torque to accommodate different operating conditions.

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Process Machinery

The drive can be used on large process machines where motor speed must be coordinated with production requirements.

Examples include:

• Processing machinery
• Production lines
• Material preparation systems
• Industrial mixing systems
• Large mechanical processing equipment

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12. Industry Applications

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13. Five Recommended Same-Series or Related Models

The following models are useful for comparison within the PowerFlex 755 family or closely related large-frame configurations.

These neighboring ratings are useful when the motor current is close to the boundary between two drive sizes.

For engineering selection, the motor’s actual full-load current should be compared with the drive’s applicable duty rating rather than selecting the model simply according to nominal horsepower.

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14. Five Additional High-Power Related Models

These models represent progressively larger current capacities and can be considered when a 295 A configuration does not provide sufficient capacity for the motor or application.

The physical size can remain similar across several Frame 9 configurations even though their electrical ratings differ.

15. Five Popular Models Under the Same Brand

The following products represent other widely used models from the same brand and provide a useful comparison across different drive sizes and product families.

These products cover substantially different application levels.

The PowerFlex 525 is a compact drive intended for smaller machinery.

The PowerFlex 753 is positioned for broader industrial applications and more advanced control requirements.

The PowerFlex 755 provides high-performance control and a wider range of configuration possibilities.

The large Frame 9 configurations are intended for considerably larger industrial motor systems.

16. Comparison of Related Models

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17. Automation System Integration

A major advantage of the PowerFlex 755 platform is its ability to function as part of a complete automation system.

A typical industrial system can contain:

• Programmable controllers
• Human-machine interfaces
• Sensors
• Motor drives
• Encoders
• Safety equipment
• Industrial Ethernet networks
• Process instruments
• Supervisory control systems

The drive can exchange information with the control system so that motor operation becomes part of the overall production process.

For example, the controller can provide a speed reference while the drive reports actual speed, current, operating status and fault information.

This type of integration is especially useful in production lines where multiple motors need to operate according to a coordinated sequence.

18. Feedback and Precision Control

Some industrial applications require more precise speed regulation than a basic open-loop drive can provide.

Feedback options can be used where appropriate.

An encoder or compatible feedback device can provide actual motor information to the drive.

This can improve control in applications involving:

• Accurate speed regulation
• Synchronization
• Tension control
• High-inertia machinery
• Large conveyors
• Process machinery
• Specialized motor-control applications

The exact feedback configuration should be selected according to the motor and application.

19. Thermal Management

The large-frame drive generates significant heat during operation.

The air-cooled construction is therefore an important part of the product’s design.

The installation should provide adequate airflow and should prevent excessive accumulation of heat around the drive.

Important considerations include:

The actual installation requirements should be evaluated as part of the complete electrical design.

20. Installation Considerations

Because the equipment is approximately 2.45 meters high, transportation needs to be considered before the unit reaches the installation site.

Door openings, corridors, elevators and lifting equipment should be checked.

The approximate 1246 kg weight also means that the floor structure needs to be capable of supporting the equipment.

The electrical installation should allow sufficient space for power cables and control wiring.

Maintenance access should also be considered.

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21. Application Example — Large Conveyor

Consider a conveyor system driven by a large AC motor.

When the conveyor is stationary, a large amount of material may already be on the belt.

Starting the motor directly can produce a high current surge and significant mechanical stress.

With the PowerFlex 755 drive, the motor can be accelerated according to a programmed ramp.

Once the conveyor reaches operating speed, the drive can maintain the required speed.

If production requirements change, the speed reference can also be changed.

During stopping, controlled deceleration can be used to reduce sudden mechanical loading.

This makes a high-power variable-frequency drive particularly useful for large material-handling equipment.

22. Application Example — Large Pump

A large pump does not necessarily need to run at full speed continuously.

The required flow can change according to process conditions.

A variable-frequency drive allows the motor speed to be adjusted accordingly.

The drive can therefore serve as the electrical control interface between the motor and the process-control system.

This approach is common in industrial water systems, process plants and large circulation systems.

23. Application Example — Large Fan

Industrial ventilation systems often experience changing airflow requirements.

Instead of continuously operating a large fan at maximum speed, the drive can adjust the motor speed according to the required operating condition.

The same principle can be applied to:

• Cooling fans
• Exhaust systems
• Process ventilation
• Industrial air-handling systems
• Large ventilation equipment

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24. Key Advantages at a Glance

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25. Product Selection Checklist

Before replacing or purchasing a 20G1F3E295LNDNNNNN, the following information should be confirmed:

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26. Detailed Product Parameter Summary

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27. Final Product Overview

The 20G1F3E295LNDNNNNN is a large-frame PowerFlex 755 AC variable-frequency drive designed for demanding industrial motor-control applications.

With a 295 A class output rating, 400 V-class three-phase configuration, Frame 9 construction and forced-air cooling, it is intended for applications where the motor and mechanical system require considerably more capacity than a compact industrial drive can provide.

Its major strengths are controlled motor acceleration and deceleration, variable-speed operation, torque control, feedback capability and integration with industrial automation systems.

Typical applications include large conveyors, pumps, fans, compressors, mixers, material-handling equipment and large process machines.

The physical size is an important part of the product specification. A reference Frame 9 configuration is approximately 2453 mm high, 1200 mm wide and 600–800 mm deep, with a reference weight of approximately 1246 kg. A complete installation containing additional option cabinets can be considerably heavier.

When selecting this model, the most important parameters are the motor’s actual nameplate current and voltage, application duty, overload requirement, acceleration/deceleration profile, ambient conditions, feedback requirements and final cabinet arrangement.

For a large industrial motor-control project, the 20G1F3E295LNDNNNNN is therefore best regarded as a complete high-power drive-system component rather than simply a frequency converter. Its Frame 9 construction and PowerFlex 755 architecture make it suitable for large, automated industrial machinery where stable speed control, controlled torque and integration with the plant control system are required.