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Allen-Bradley 20G1ABC460JN2NNNNN PowerFlex 755 AC Drive – Detailed Specifications, Applications, Advantages and Related Models

The Allen-Bradley 20G1ABC460JN2NNNNN is a high-power PowerFlex 755 AC Drive designed for large three-phase industrial motor-control applications.

It belongs to the PowerFlex 750-Series, specifically the PowerFlex 755 family, and is configured as an air-cooled, Frame 8, 400 VAC-class drive.

With a 460 A output-current class, 315 kW light-duty capability, 250 kW normal-duty capability, and 200 kW heavy-duty capability, this model is intended for large industrial machinery where stable speed control, controlled acceleration, process regulation, and networked automation are required.

The model uses an AC input with precharge and no DC terminals, a filtered configuration with the CM jumper installed, and no dynamic braking. It also includes embedded EtherNet/IP communication and an enhanced LCD full-numeric handheld/local HIM configuration.

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1. Basic Product Information

The dimensions and weight above should be treated as engineering reference values for the large Frame 8 / 600 mm MCC-style configuration. The final mechanical drawing for the exact equipment arrangement should be used for cabinet fabrication, lifting calculations, transportation, and installation.

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2. Product Introduction

The 20G1ABC460JN2NNNNN is designed for large industrial motors that require controlled variable-speed operation.

Rather than operating a motor continuously at a fixed frequency, the drive regulates the electrical output supplied to the motor so that the motor can operate at the speed required by the process.

This provides much more flexibility than a conventional fixed-speed motor starter.

For example, a large pump may need to operate at different flow rates throughout the day. A conveyor may need a controlled acceleration sequence. A large fan may only need to operate at full speed during peak production. A process mixer may require different speeds during different stages of production.

In these situations, a high-power variable frequency drive can provide precise and repeatable motor-speed control.

The 20G1ABC460JN2NNNNN is particularly suited to these large-scale applications because of its high current capability and Frame 8 construction.

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3. Brand and Product Series

The PowerFlex 755 series is intended for industrial applications that require a combination of high power, flexible motor control, networking, diagnostics, and integration with automated production systems.

The 20G1ABC460JN2NNNNN is a large-frame configuration within this family.

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4. Detailed Electrical Specifications

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5. LD, ND and HD Ratings

One of the important characteristics of this drive is its ability to be evaluated under different duty classifications.

The difference between these ratings is important when selecting the drive.

A 250 kW motor does not automatically mean that every 250 kW application can use the drive under the same conditions.

The machine’s actual current requirement, starting torque, acceleration time, overload requirement, operating speed range, ambient conditions, and load cycle must all be considered.

For example, a centrifugal pump usually has a very different load profile from a heavily loaded conveyor.

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6. Light-Duty Operation

The 315 kW light-duty rating makes this drive suitable for applications where the motor load is relatively moderate or follows a variable-torque characteristic.

Typical examples include:

• Large centrifugal pumps
• Large fans
• Industrial blowers
• Ventilation systems
• Cooling-water systems
• Certain process pumps

These applications can benefit from variable-speed operation because the motor does not necessarily need to operate continuously at maximum speed.

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7. Normal-Duty Operation

The 250 kW normal-duty rating at 460 A is particularly important for general industrial applications.

This rating is appropriate for many conventional industrial motor applications where the load can vary but does not continuously demand the maximum heavy-duty overload capability.

Typical applications include:

• Conveyors
• Process pumps
• Material-handling machinery
• Large production equipment
• Fans
• Compressors
• Mixers
• General process machinery

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8. Heavy-Duty Operation

The 200 kW heavy-duty rating provides a more conservative power rating for demanding applications.

Heavy-duty applications may involve:

• High starting torque
• High inertia
• Frequent acceleration
• Rapid changes in load
• Significant temporary overloads
• Difficult starting conditions

Examples can include:

• Heavy conveyors
• Material-handling machinery
• Mixers
• High-inertia machinery
• Certain process machines

For these applications, the motor current and overload requirements should be evaluated against the heavy-duty rating rather than simply using the largest published kW figure.

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9. Input Configuration

The 20G1ABC460JN2NNNNN uses an AC input with precharge and no DC terminals.

The precharge arrangement controls the initial charging process of the DC bus when the drive is energized.

This is particularly important for large drives because the internal DC-link capacitors represent a substantial energy-storage system.

The absence of DC terminals is also an important part of the model configuration.

This means the drive should not automatically be considered interchangeable with configurations designed for common DC-bus applications.

When replacing an existing drive, the complete electrical configuration should be checked rather than selecting a replacement only by current and voltage.

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10. Filtering and CM Jumper

The drive is configured with:

Filtered, CM Jumper Installed

This configuration is relevant to electromagnetic compatibility and the way the drive interacts with the incoming electrical system.

The filtering arrangement can help manage high-frequency electrical disturbances generated by the drive’s switching operation.

The CM jumper configuration is also important because it affects common-mode electrical behavior.

For retrofit applications, the existing drive’s filtering and grounding arrangement should be compared with the replacement configuration.

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11. Dynamic Braking

The 20G1ABC460JN2NNNNN is configured with:

Dynamic Braking: None

This means the standard configuration does not include a dynamic-braking system for dissipating regenerated energy through a braking resistor.

For applications such as large fans, pumps, and machinery with gradual stopping requirements, this may be completely adequate.

However, applications with:

• Rapid stopping
• High inertia
• Frequent acceleration and deceleration
• Regenerative loads
• Vertical movement

may require a different braking arrangement.

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12. HIM and Local Operation

An important difference between this model and some closely related catalog configurations is its Enhanced LCD Full Numeric Handheld / Local HIM configuration.

The HIM provides a local interface for drive operation and configuration.

Depending on the operating mode, the local interface can be used for functions such as:

• Viewing drive status
• Monitoring operating parameters
• Adjusting settings
• Reviewing fault conditions
• Starting or stopping the drive where permitted
• Checking diagnostic information
• Accessing configuration parameters

This can be particularly useful during commissioning and maintenance.

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13. Mechanical Specifications

The approximate physical envelope is:

2102 mm × 606 mm × 600 mm (H × W × D).

The approximate equipment weight is:

623 kg.

Because this is a large Frame 8 drive, the mechanical installation is an important part of the overall engineering design.

The cabinet, floor, lifting equipment, transportation equipment, and mounting system must all be capable of safely handling the equipment.

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14. Cooling and Thermal Management

The drive uses forced-air cooling.

At this current level, thermal management is critical.

The power electronics generate heat during normal operation, and the cooling system continuously removes this heat.

A suitable installation should provide:

• Adequate ventilation
• Correct airflow
• Proper clearance
• Clean air passages
• Appropriate ambient temperature
• Reliable fan operation
• Suitable cabinet thermal design

The drive should not be installed in a location where airflow is blocked.

Dust, oil mist, moisture, corrosive gases, and other contaminants should also be controlled.

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15. Communication Capability

The PowerFlex 755 platform provides embedded EtherNet/IP communication.

This allows the drive to be integrated into a larger industrial automation system.

Typical data that can be exchanged includes:

• Start commands
• Stop commands
• Speed references
• Output frequency
• Motor current
• Drive status
• Fault information
• Warning conditions
• Diagnostic information
• Parameter values
• Operating conditions

This is especially valuable in large production systems where multiple drives must be monitored and controlled from a central automation system.

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16. Motor Control Capability

The PowerFlex 755 platform supports advanced AC motor-control strategies.

Depending on the selected control configuration and application requirements, the platform can support:

• V/Hz control
• Sensorless vector control
• Vector-based motor control
• Feedback-based motor control
• Encoder-supported applications
• Permanent-magnet motor control in supported configurations

This gives the drive considerably more flexibility than a basic VFD intended only for simple fan or pump applications.

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17. Product Applications

17.1 Large Conveyor Systems

The 20G1ABC460JN2NNNNN is well suited to large conveyor systems.

Conveyors can contain significant mechanical inertia, particularly when transporting heavy materials.

Controlled acceleration can reduce mechanical shock and provide a smoother transition from standstill to operating speed.

Typical applications include:

• Mining conveyors
• Cement conveyors
• Aggregate conveyors
• Steel-processing conveyors
• Port conveyors
• Bulk-material handling
• Production conveyors
• Large warehouse handling systems

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17.2 Large Pumping Systems

Large pumps are another strong application area.

The drive allows pump speed to be adjusted according to actual process demand.

Typical applications include:

• Water treatment
• Wastewater treatment
• Industrial water circulation
• Cooling-water systems
• Process pumping
• Irrigation
• Industrial fluid transfer
• Chemical processing

Variable-speed operation can also reduce unnecessary energy consumption in suitable variable-torque applications.

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17.3 Large Fans

Large industrial fans can require substantial motor power.

The drive can adjust motor speed according to ventilation requirements.

Applications include:

• Industrial ventilation
• Furnace ventilation
• Exhaust systems
• Dust collection
• Process-air systems
• Drying systems
• Combustion-air systems
• Large HVAC equipment

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17.4 Blowers

Industrial blowers can also benefit from variable-speed operation.

The drive can regulate blower speed according to process requirements instead of requiring the motor to operate continuously at full speed.

This can improve process stability and, in appropriate applications, reduce energy consumption.

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17.5 Compressors

Large compressors can require high starting current and controlled acceleration.

The 460 A class provides the capacity required for many large compressor applications.

The final selection should take into account:

• Compressor type
• Motor nameplate current
• Starting torque
• Acceleration time
• Operating speed range
• Overload requirements

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17.6 Material Handling

Material-handling systems often benefit from controlled speed and torque.

Applications can include:

• Feeders
• Transfer systems
• Bulk-material equipment
• Conveyor systems
• Production transfer equipment
• Large handling machinery

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17.7 Mixers and Agitators

Mixers and agitators can require substantial starting torque.

Variable-speed control allows the process operator to select different speeds for different stages of production.

Typical benefits include:

• Controlled startup
• Adjustable mixing speed
• Reduced mechanical shock
• Improved process consistency
• Better control of production conditions

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17.8 Process Machinery

The drive can be used with various industrial process machines.

Examples include:

• Extruders
• Rollers
• Winding equipment
• Processing lines
• Production machinery
• Industrial mechanical systems

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18. Main Product Advantages

18.1 High Current Capacity

The 460 A rating makes this drive suitable for large industrial motors.

It is significantly larger than compact variable frequency drives intended for small and medium motors.

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18.2 250 kW Normal-Duty Capability

The 250 kW normal-duty rating provides substantial capacity for large industrial machinery.

This makes the drive appropriate for many high-power process and material-handling applications.

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18.3 200 kW Heavy-Duty Capability

The 200 kW heavy-duty rating allows the drive to be considered for applications with greater torque and overload requirements.

This is important for machines that experience demanding starting or acceleration conditions.

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18.4 315 kW Light-Duty Capability

For suitable variable-torque applications, the drive can operate at a 315 kW light-duty class.

This is particularly useful for large fans and centrifugal pumps.

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18.5 Embedded EtherNet/IP

Integrated industrial networking simplifies communication between the drive and the automation system.

This can reduce control wiring and make monitoring more centralized.

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18.6 Advanced Motor Control

The PowerFlex 755 platform provides multiple motor-control methods.

This makes it possible to tailor drive behavior to the machine rather than using a one-size-fits-all control method.

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18.7 Local HIM

The enhanced LCD full-numeric HIM provides a convenient local interface for commissioning, maintenance, monitoring, and troubleshooting.

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18.8 EMC Filtering

The filtered configuration helps manage electrical interference generated by the drive.

This is valuable in industrial facilities where high-power drives operate near sensitive electronics.

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18.9 Forced-Air Cooling

Forced-air cooling provides active thermal management for the high-power electronics.

This is appropriate for a large Frame 8 drive.

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18.10 Large Industrial Construction

The Frame 8 architecture provides a robust physical platform for high-power industrial applications.

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19. Advantages for Industrial Automation

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20. Five Related Models in the Same Series

The following models are useful for comparison with the 20G1ABC460JN2NNNNN.

These models provide a useful comparison between different catalog configurations and current capacities.

The 460 A models are especially useful when the motor remains within the same current range but a different configuration is required.

The 540 A, 567 A, and 650 A versions provide additional current and power capacity for larger motors.

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21. Five Same-Brand Popular Models

These models represent useful reference points across the high-power PowerFlex 755 range.

The first four are particularly relevant to 400 VAC-class installations.

The 690 VAC model belongs to a different voltage class and should not be treated as a direct replacement for a 400 VAC drive.

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22. Detailed Related-Model Comparison

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23. Mechanical Comparison

The exact mechanical dimensions of the larger related models should be checked against their individual configurations because frame size alone does not guarantee identical cabinet dimensions.

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24. Installation Requirements

Because the drive is approximately 2102 mm high, 606 mm wide, and 600 mm deep, installation requires substantial cabinet and floor space.

The approximately 623 kg weight also makes mechanical handling an important consideration.

The installation should account for:

• Cabinet structural strength
• Floor loading
• Lifting equipment
• Transportation route
• Service access
• Power-cable entry
• Motor-cable routing
• Cooling airflow
• Ventilation
• Grounding
• Network wiring

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25. Cabinet Design

A suitable cabinet should provide enough space for both the drive and its associated equipment.

The design should consider:

Power Connections

The 460 A current rating requires substantial power conductors and suitable termination arrangements.

Cooling

The forced-air system needs unobstructed airflow.

Service Access

Maintenance personnel need access to the drive and local HIM.

Control Wiring

Control and communication wiring should be routed in a manner that minimizes interference from high-power conductors.

Grounding

A properly designed grounding system is essential for reliable operation and EMC performance.

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26. Thermal Management

High-power drives produce substantial heat.

The drive’s forced-air cooling system must continuously remove this heat during operation.

The cabinet design should therefore consider:

• Drive heat losses
• Other equipment heat losses
• Ambient temperature
• Airflow direction
• Fan performance
• Cabinet ventilation
• Room ventilation

If multiple large drives are installed together, the combined thermal load can become significant.

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27. Maintenance and Service

Routine inspection is important for a large industrial drive.

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28. Local HIM Advantages

The enhanced LCD full-numeric local HIM provides a practical interface during:

• Initial commissioning
• Parameter setup
• Motor testing
• Maintenance
• Fault investigation
• Local diagnostics
• Troubleshooting

It is particularly useful when personnel need to inspect the drive without relying exclusively on the central control system.

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29. Networked Control Advantages

The embedded EtherNet/IP capability allows the drive to become part of a larger automation system.

This can provide:

• Centralized start/stop control
• Remote speed adjustment
• Drive-status monitoring
• Fault reporting
• Warning monitoring
• Production data collection
• Diagnostic information
• Parameter management
• Integration with supervisory systems

This type of network architecture is particularly useful in large factories where numerous motors and drives operate together.

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30. Typical Industries

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31. Application Suitability

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32. Main Product Advantages Summary

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33. Important Selection Considerations

Before installing or replacing a drive with the 20G1ABC460JN2NNNNN, several factors should be checked.

Motor Current

The motor full-load current must be within the applicable drive duty rating.

Motor Power

The motor’s kW rating should be considered together with current, load type, and duty cycle.

Load Type

A centrifugal pump, conveyor, compressor, mixer, and crusher have different torque characteristics.

Acceleration

High-inertia equipment may require careful acceleration-time evaluation.

Braking

This particular configuration does not include dynamic braking.

Input Voltage

The electrical system must be compatible with the 400 VAC three-phase class.

Cabinet Dimensions

The approximately 2102 × 606 × 600 mm physical envelope must be accommodated.

Weight

The approximately 623 kg weight must be considered for transportation and installation.

Cooling

Forced-air cooling requires adequate airflow and ventilation.

Communication

If network control is required, the EtherNet/IP architecture should be incorporated into the control-system design.

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34. Product Selection Compared with Higher-Current Models

The 20G1ABC460JN2NNNNN is useful when the motor requirement is within approximately the 460 A range.

If the motor requires additional current capacity, the next logical choices can include:

20G1ABC540JN2NNNNN

This provides a higher current rating and a higher normal-duty power capability.

20G1ABC567JN2NNNNN

This provides another step upward for larger industrial motors.

20G1ABC650JN2NNNNN

This is intended for substantially higher-power applications.

20G1ABC750JN2NNNNN

This provides still greater current and power capability for very large industrial motors.

The correct choice should always be based on the motor nameplate and load profile rather than simply choosing the largest available drive.

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35. Complete Technical Summary

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36. Final Product Assessment

The Allen-Bradley 20G1ABC460JN2NNNNN is a high-power industrial drive designed for large-scale motor-control applications.

Its 460 A current capability, 315 kW light-duty rating, 250 kW normal-duty rating, and 200 kW heavy-duty rating provide a broad operating range for large industrial machines.

The PowerFlex 755 architecture gives the product considerably more flexibility than a basic variable-frequency drive. It can be integrated into industrial automation networks, supports advanced motor-control strategies, and provides local access through the enhanced LCD full-numeric HIM.

The electrical configuration is also well defined: 400 VAC three-phase input, AC input with precharge, no DC terminals, filtered configuration, CM jumper installed, and no dynamic braking.

Mechanically, the drive is a substantial piece of equipment. The approximate 2102 mm height, 606 mm width, 600 mm depth, and 623 kg weight mean that cabinet design, floor loading, transportation, lifting, cooling, and service access need to be considered carefully.

For applications such as large pumps, fans, blowers, conveyors, compressors, mixers, material-handling systems, and process machinery, the drive provides a combination of high current capacity, flexible speed control, network integration, and industrial-grade construction.

The strongest reasons to select this model are its high-power capability, 460 A current class, flexible LD/ND/HD ratings, embedded EtherNet/IP, enhanced local HIM, forced-air cooling, EMC filtering, and large-frame PowerFlex 755 architecture.

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37. Recommended Models at a Glance

In short, the 20G1ABC460JN2NNNNN is a large PowerFlex 755 Frame 8 AC drive intended for demanding industrial motor applications. Its combination of 460 A output capability, 400 VAC operation, 315/250/200 kW LD/ND/HD ratings, embedded EtherNet/IP, enhanced local HIM, EMC filtering, forced-air cooling, and large MCC-style construction makes it particularly suitable for high-power automated machinery and continuous industrial processes.