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Allen-Bradley 20G1ALE460JN0NNNNN PowerFlex 755 AC Drive

1. Product Overview

The Allen-Bradley 20G1ALE460JN0NNNNN is a high-power AC variable frequency drive from the PowerFlex 755 series.

It is designed for large three-phase industrial motor applications where high current capacity, adjustable motor speed, controlled acceleration and deceleration, industrial network communication, and reliable long-term operation are required.

This model has a rated output current of 460 A and is intended for a 600 VAC, three-phase electrical system.

The drive uses a Frame 8 mechanical configuration and an 800 mm deep MCC-style construction.

The specified configuration includes embedded EtherNet/IP, forced-air cooling, AC input with precharge, no external DC terminals, filtered input, CM jumper installed, no dynamic braking, and no HIM.

The published motor ratings are 500 HP for Light Duty, 500 HP for Normal Duty, and 400 HP for Heavy Duty.

2. Brand and Product Series

Item	Description
Brand	Allen-Bradley
Product Family	PowerFlex
Series	PowerFlex 755
Product Type	AC Variable Frequency Drive
Model	20G1ALE460JN0NNNNN
Drive Type	Air-Cooled AC Packaged Drive
Rated Current	460 A
Voltage Class	600 VAC
Input Phase	3 Phase
Frame	Frame 8
Cooling	Forced Air
Communication	Embedded EtherNet/IP
Cabinet Style	800 mm Deep MCC Style
Enclosure	Type 1 / IP20
Input Configuration	AC Input with Precharge
DC Terminals	None
Dynamic Braking	None
HIM	Blank / No HIM

The PowerFlex 755 family is designed for larger industrial motor-control systems where the drive needs to handle substantial motor power while also providing flexible control and communication functions.

The 20G1ALE460JN0NNNNN is one of the high-current configurations within the PowerFlex 755 family.

3. Main Technical Specifications

Parameter	Specification
Model	20G1ALE460JN0NNNNN
Brand	Allen-Bradley
Series	PowerFlex 755
Product Type	AC Variable Frequency Drive
Rated Current	460 A
Input Voltage	600 VAC
Input Phase	3 Phase
Light Duty Rating	500 HP
Normal Duty Rating	500 HP
Heavy Duty Rating	400 HP
Frame Size	Frame 8
Cooling	Forced Air / Air Cooled
Enclosure	Type 1 / IP20
Cabinet Style	800 mm Deep MCC Style
Input Type	AC Input with Precharge
External DC Terminals	None
Input Filtering	Filtered
CM Jumper	Installed
Dynamic Braking	None
Human Interface Module	Blank / No HIM
Communication	Embedded EtherNet/IP
Motor Type	Three-Phase AC Motor
Installation Type	Large Industrial Drive
Approx. Height	Approx. 2450 mm*
Approx. Width	Approx. 600 mm*
Depth	800 mm
Approx. Weight	Approx. 85–100 kg*

*The 800 mm depth corresponds to the specified MCC-style configuration. Overall dimensions and final installed weight should be confirmed against the mechanical drawing for the exact supplied unit before fabrication, lifting, transportation, or installation.

4. Product Configuration

The catalog number 20G1ALE460JN0NNNNN represents a specific PowerFlex 755 configuration rather than simply identifying the basic drive family.

The model is an air-cooled packaged drive with embedded EtherNet/IP communication.

It is configured for AC input with precharge and does not have external DC terminals.

The drive uses a Type 1 / IP20 enclosure arrangement and an 800 mm deep MCC-style mechanical configuration.

The input is filtered, and the CM jumper is installed.

Dynamic braking is not included in this configuration.

The unit is supplied without a HIM, which means that the drive is intended to be integrated into the larger control and operating arrangement rather than relying on a permanently installed local operator interface.

5. Duty Rating

The 20G1ALE460JN0NNNNN provides three different motor-duty ratings.

Duty Classification	Motor Rating
Light Duty	500 HP
Normal Duty	500 HP
Heavy Duty	400 HP

The different duty ratings allow the same drive platform to be used with different types of industrial loads.

For variable-torque applications such as large centrifugal pumps and fans, the Light Duty rating may be the applicable selection point.

For general industrial machinery, the Normal Duty rating can be used when the motor load remains within the corresponding operating envelope.

For applications requiring higher torque and more demanding overload performance, the Heavy Duty rating becomes the relevant selection basis.

Final drive sizing should always be based on the actual motor nameplate current and load characteristics rather than horsepower alone.

6. Light Duty Operation

The Light Duty rating of this model is 500 HP.

Light Duty applications generally have less severe overload requirements than high-torque applications.

Typical examples include large centrifugal pumps, fans, blowers, and other variable-torque machinery.

In these systems, the motor load normally follows the process requirement and may decrease significantly as motor speed is reduced.

The drive can adjust motor speed according to the required flow, pressure, airflow, or production rate.

7. Normal Duty Operation

The Normal Duty rating is also 500 HP.

This makes the 20G1ALE460JN0NNNNN suitable for a wide range of general industrial machinery.

Normal Duty applications may include:

• Process pumps.
• Industrial fans.
• Cooling systems.
• Conveyors with moderate loading.
• General mechanical equipment.
• Production machinery.
• Industrial utility systems.

The motor’s actual full-load current remains an important factor when determining whether this rating is appropriate.

8. Heavy Duty Operation

The Heavy Duty rating is 400 HP.

Heavy Duty applications typically involve higher torque, more frequent acceleration, heavier mechanical loading, or more demanding overload conditions.

Potential applications include:

• Heavy conveyors.
• Mixers.
• Material-handling machinery.
• Crushers.
• Heavy process equipment.
• High-torque mechanical drives.
• Certain compressor applications.

The lower horsepower rating under Heavy Duty operation does not indicate reduced product quality. It reflects the additional thermal and overload demands imposed on the drive when operating a more demanding load.

9. Electrical Input Characteristics

Electrical Parameter	Specification
Input Voltage Class	600 VAC
Input Phase	3 Phase
Rated Drive Current	460 A
Input Type	AC Input
Precharge	Included
External DC Terminals	None
Input Filtering	Filtered
CM Jumper	Installed
Dynamic Braking	None

The AC input with precharge configuration is intended for controlled energization of the drive’s internal power circuit.

The lack of external DC terminals is an important consideration when comparing this model with other configurations that may be designed for different DC-bus arrangements.

The filtered input configuration is part of the specified catalog configuration.

10. Output and Motor Control

The drive is designed for variable-frequency control of large three-phase AC motors.

Output Parameter	Specification
Rated Drive Current	460 A
Voltage Class	600 VAC
Light Duty Motor Rating	500 HP
Normal Duty Motor Rating	500 HP
Heavy Duty Motor Rating	400 HP
Motor Type	Three-Phase AC Motor
Drive Cooling	Air Cooled
Frame	Frame 8
Control Principle	Variable Frequency Motor Control

Variable-frequency operation allows the motor speed to be adjusted rather than requiring the motor to operate continuously at a fixed speed.

This is particularly useful for processes where the required motor output changes during normal operation.

11. Product Introduction

The Allen-Bradley 20G1ALE460JN0NNNNN PowerFlex 755 is a high-current industrial AC drive designed for large motor applications.

With a 460 A rating, it is intended for substantial motor loads and large mechanical systems.

The drive’s 600 VAC three-phase configuration makes it suitable for high-power industrial electrical systems.

Its 500 HP Light Duty, 500 HP Normal Duty, and 400 HP Heavy Duty ratings provide flexibility for different types of motor loads.

The combination of high current capacity, embedded EtherNet/IP communication, forced-air cooling, and large Frame 8 construction makes this model suitable for centralized industrial motor-control systems.

It can be used as part of a larger automation system where several large motors must be monitored and controlled from a central control platform.

12. Embedded EtherNet/IP Communication

The 20G1ALE460JN0NNNNN includes embedded EtherNet/IP communication.

This provides a convenient network interface for exchanging drive information with an industrial control system.

Typical information can include:

• Start commands.
• Stop commands.
• Speed references.
• Output frequency.
• Motor current.
• Drive status.
• Fault status.
• Alarm information.
• Operating data.
• Diagnostic information.
• Control commands.
• Process-related values.

For a facility containing many drives, network communication can simplify the overall control architecture.

13. Network Integration Advantages

The drive can be integrated into a larger automation network rather than operating as an isolated motor controller.

A central control system can monitor drive status and operating conditions.

For example, a production system may include multiple pumps, fans, conveyors, and compressors.

Each drive can become part of the same control structure while retaining its own motor-control parameters.

This approach can simplify operator monitoring and reduce the amount of individual hardwired control wiring required for basic commands and status signals.

14. CM Jumper Configuration

The specified 20G1ALE460JN0NNNNN configuration has the CM jumper installed.

Common-mode configuration is an important consideration in variable-frequency drive installations.

High-frequency switching behavior can affect motor cables, grounding systems, electromagnetic compatibility, and other components connected to the motor circuit.

The complete installation should therefore consider:

• Motor cable length.
• Motor cable construction.
• Grounding arrangement.
• Motor type.
• Installation environment.
• Electromagnetic compatibility.
• System grounding.
• Cable routing.

The CM jumper configuration should not be changed simply as a matter of preference. It should be selected according to the complete installation requirements.

15. Cooling System

The drive uses forced-air cooling.

A high-current drive produces significant heat during operation, making airflow an important part of the installation.

The cooling air path should remain unobstructed.

Hot air leaving the drive should not be allowed to circulate back into the cooling inlet.

The electrical room or cabinet should have enough ventilation capacity to remove the heat generated by the complete drive system.

Regular inspection of cooling fans and ventilation passages is recommended, especially in dusty industrial environments.

16. Mechanical Construction

The drive uses a Frame 8 mechanical platform and an 800 mm deep MCC-style arrangement.

Mechanical Parameter	Specification
Frame	Frame 8
Enclosure	Type 1 / IP20
Cabinet Style	MCC Style
Cabinet Depth	800 mm
Cooling	Forced Air
Installation Environment	Industrial Electrical Room / MCC
Approx. Height	2450 mm*
Approx. Width	600 mm*
Approx. Weight	85–100 kg*

*Approximate planning values. Use the final mechanical drawing for exact installation, cabinet fabrication, lifting, transportation, and service-clearance calculations.

17. Dimensions and Weight

The physical size of the drive should be considered carefully when planning the installation.

Physical Parameter	Approximate Value
Height	Approx. 2450 mm
Width	Approx. 600 mm
Depth	800 mm
Weight	Approx. 85–100 kg
Frame	Frame 8
Construction	MCC Style

The 800 mm depth is a key characteristic of the specified configuration.

The height and width figures above are provided as engineering planning values rather than certified mechanical dimensions.

The actual shipping and installed weight can vary depending on the final configuration and associated equipment.

For a final engineering drawing, foundation calculation, lifting plan, or cabinet fabrication, the exact dimensional documentation should be used.

18. Product Applications

The 20G1ALE460JN0NNNNN can be used across a wide range of high-power industrial applications.

Typical applications include:

• Large centrifugal pumps.
• Process pumps.
• Cooling-water pumps.
• Wastewater pumps.
• Large fans.
• Industrial blowers.
• Ventilation equipment.
• Compressors.
• Conveyor systems.
• Mining equipment.
• Material-handling systems.
• Process machinery.
• Production equipment.
• Large mixers.
• Mechanical processing systems.
• Industrial utility equipment.

19. Pump Applications

Large pumps are a natural application for a high-current variable frequency drive.

The drive can adjust pump motor speed according to process requirements.

Potential applications include:

• Industrial water supply.
• Cooling-water circulation.
• Wastewater treatment.
• Process-water circulation.
• Large irrigation systems.
• Industrial utility systems.
• Chemical process systems.
• Boiler-related circulation.
• Manufacturing facilities.

For centrifugal pumps, variable-speed control can allow the pump to operate closer to the required process condition rather than continuously running at maximum speed.

20. Fan and Blower Applications

The drive can also be used for large fans and blowers.

Typical applications include:

• Industrial ventilation.
• Furnace exhaust.
• Dust collection.
• Process ventilation.
• Air-handling equipment.
• Cooling systems.
• Large exhaust systems.
• Mining ventilation.
• Combustion-air systems.

When airflow requirements change, the drive can adjust motor speed to match the required process output.

21. Conveyor Applications

Large conveyor systems can require high motor current and controlled acceleration.

The 460 A drive can be used in applications such as:

• Mining conveyors.
• Aggregate handling.
• Cement plants.
• Steel processing.
• Bulk-material handling.
• Port equipment.
• Large production lines.
• Industrial material transport.

Variable-speed operation can allow conveyor speed to be adjusted according to material flow and production requirements.

Controlled acceleration can also reduce mechanical shock during starting.

22. Compressor Applications

The drive can be used for large compressor motors when the compressor’s torque and operating characteristics are compatible with the drive.

Potential applications include:

• Industrial compressed-air systems.
• Process compressors.
• Utility compressors.
• Manufacturing plants.
• Cooling systems.
• Gas-processing equipment.

Compressor applications should be evaluated carefully because the required motor torque can vary considerably with compressor design and operating speed.

23. Process Machinery Applications

The PowerFlex 755 platform can be applied to various types of process equipment.

Typical examples include:

• Mixers.
• Agitators.
• Extrusion systems.
• Production machinery.
• Roll systems.
• Material-processing equipment.
• Large machine systems.
• Industrial mechanical drives.

Where process speed needs to change according to production requirements, a variable frequency drive can provide a practical control solution.

24. Main Product Advantages

24.1 High 460 A Current Capacity

The 460 A rating provides substantial motor-control capacity for large industrial applications.

It places the model above the 435 A configuration and below several higher-current PowerFlex 755 configurations.

This makes it useful for applications where a 435 A drive is insufficient but a significantly larger drive is unnecessary.

24.2 500 HP Light Duty Rating

The 500 HP Light Duty rating provides substantial capacity for large variable-torque applications.

This makes the drive particularly useful for large pumps, fans, and blowers.

24.3 500 HP Normal Duty Rating

The Normal Duty rating remains at 500 HP, providing strong capacity for general industrial motor applications.

24.4 400 HP Heavy Duty Rating

The 400 HP Heavy Duty rating allows the drive to be used for demanding applications with higher torque requirements.

24.5 Embedded EtherNet/IP

The integrated communication interface makes the drive suitable for networked industrial automation systems.

This can reduce the need for separate communication hardware.

24.6 Frame 8 Construction

Frame 8 construction is intended for large industrial drive applications.

It provides the mechanical scale necessary for a drive operating at this current level.

24.7 800 mm Deep MCC Style

The MCC-style configuration is suitable for large electrical rooms and industrial motor-control installations.

24.8 Forced-Air Cooling

Forced-air cooling provides an established thermal-management method for high-power drive equipment.

The installation must provide sufficient airflow and heat removal.

25. Electrical Advantages

The drive combines a high current rating with a 600 VAC three-phase configuration.

This makes it suitable for large industrial electrical systems.

The AC input with precharge provides a defined input arrangement.

The filtered configuration is suitable for installations requiring the specified input filtering arrangement.

The embedded EtherNet/IP interface provides a convenient way to integrate the drive with the industrial control network.

26. Mechanical Advantages

The Frame 8 mechanical platform is designed for large drive installations.

The 800 mm deep MCC-style construction can be incorporated into larger electrical rooms and motor-control-center arrangements.

The drive is designed as a large industrial package rather than a compact standalone wall-mounted VFD.

This makes it particularly suitable for centralized high-power motor-control installations.

27. Control Advantages

Variable-frequency control provides the ability to adjust motor speed according to process requirements.

This can be useful for:

• Pump flow control.
• Fan airflow control.
• Conveyor speed control.
• Process speed control.
• Compressor operation.
• Production machinery.
• Material handling.
• Mechanical process control.

The drive can therefore form part of the process-control system rather than operating simply as an electronic starter.

28. Maintenance Advantages

The embedded communication capability can simplify drive monitoring.

Drive status, alarms, and faults can be made available through the automation system.

This is particularly useful in facilities with many large drives.

Maintenance personnel can review drive conditions without necessarily inspecting each drive individually during the first stage of troubleshooting.

29. Installation Requirements

Before installation, the following items should be evaluated:

• Supply voltage.
• Available electrical capacity.
• Motor voltage.
• Motor nameplate current.
• Motor horsepower.
• Duty classification.
• Ambient temperature.
• Installation altitude.
• Cooling airflow.
• Cabinet ventilation.
• Motor cable length.
• Motor cable type.
• Grounding.
• Electromagnetic compatibility.
• Input protection.
• Short-circuit requirements.
• Network cabling.
• Service access.
• Lifting requirements.
• Floor loading.
• Cabinet dimensions.

Because this is a large Frame 8 drive, the installation should be planned before equipment delivery.

30. Cooling and Heat Dissipation

High-power drives require careful thermal management.

The cooling fans should have adequate airflow.

The air inlet and outlet paths should not be blocked.

Hot exhaust air should not be redirected back toward the drive inlet.

The electrical room should have adequate ventilation and heat-removal capacity.

Periodic inspection is recommended in environments containing:

• Dust.
• Fibers.
• Oil mist.
• Metal particles.
• Process residue.
• Construction debris.

Maintaining clean airflow paths helps preserve the thermal operating margin of the drive.

31. Typical Industrial Equipment

Equipment	Typical Application
Large Centrifugal Pump	Water and process-flow control
Cooling Pump	Industrial cooling circulation
Large Fan	Variable airflow
Industrial Blower	Ventilation and process air
Compressor	Industrial process and utility systems
Conveyor	Material handling
Mixer	Process mixing
Agitator	Industrial processing
Production Machine	Variable-speed manufacturing
Mining Equipment	Large mechanical drives
Material Handling System	Controlled motor operation
Process Machinery	Adjustable-speed operation
Utility Equipment	Large motor control

Actual suitability depends on motor current, torque, speed range, duty cycle, and environmental conditions.

32. Motor Selection Considerations

Motor selection should be based on the actual motor nameplate.

Important values include:

• Rated voltage.
• Full-load current.
• Horsepower.
• Frequency.
• Rated speed.
• Power factor.
• Efficiency.
• Service factor.
• Starting requirements.
• Operating speed range.
• Load torque.

The drive’s 500 HP rating should not be interpreted as a universal indication that every 500 HP motor can be used with this drive.

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

The load’s acceleration, deceleration, overload, and torque requirements should also be considered.

33. Recommended Same-Series or Related Models

The following models are useful comparison models within the PowerFlex 755 family.

Model	Series	Current	LD Rating	ND Rating	HD Rating	Voltage	Cooling
20G1ALE395JN0NNNNN	PowerFlex 755	395 A	450 HP	400 HP	350 HP	600 VAC	Air Cooled
20G1ALE435JN0NNNNN	PowerFlex 755	435 A	500 HP	450 HP	350 HP	600 VAC	Air Cooled
20G1ALE460JN0NNNNN	PowerFlex 755	460 A	500 HP	500 HP	400 HP	600 VAC	Air Cooled
20G1ALE510JN0NNNNN	PowerFlex 755	510 A	550 HP	500 HP	450 HP	600 VAC	Air Cooled
20G1ALE617JN0NNNNN	PowerFlex 755	617 A	600 HP	500 HP	400 HP	600 VAC	Air Cooled

These models provide a practical current range around the 460 A configuration.

The 395 A and 435 A models are useful lower-current comparisons, while the 510 A and 617 A configurations provide additional capacity for larger applications.

34. Same-Series Comparison

Parameter	20G1ALE395JN0NNNNN	20G1ALE435JN0NNNNN	20G1ALE460JN0NNNNN	20G1ALE510JN0NNNNN	20G1ALE617JN0NNNNN
Series	PowerFlex 755	PowerFlex 755	PowerFlex 755	PowerFlex 755	PowerFlex 755
Current	395 A	435 A	460 A	510 A	617 A
LD	450 HP	500 HP	500 HP	550 HP	600 HP
ND	400 HP	450 HP	500 HP	500 HP	500 HP
HD	350 HP	350 HP	400 HP	450 HP	400 HP
Voltage	600 VAC	600 VAC	600 VAC	600 VAC	600 VAC
Phase	3 Phase	3 Phase	3 Phase	3 Phase	3 Phase
Cooling	Air Cooled	Air Cooled	Air Cooled	Air Cooled	Air Cooled
Frame	Frame 8	Frame 8	Frame 8	Frame 8	Frame 8
EtherNet/IP	Embedded	Embedded	Embedded	Embedded	Embedded
MCC Style	800 mm class	800 mm class	800 mm class	800 mm class	800 mm class

This comparison shows the position of the 460 A model within the high-current PowerFlex 755 range.

The 460 A configuration provides more current capacity than the 395 A and 435 A versions while remaining below the 510 A and 617 A configurations.

35. Five Same-Brand Popular Reference Models

For a same-brand comparison, the following high-power PowerFlex models provide a useful reference group.

Model	Brand	Series	Current	LD Rating	ND Rating	HD Rating	Voltage
20G1ALE295JN0NNNNN	Allen-Bradley	PowerFlex 755	295 A	350 HP	300 HP	250 HP	600 VAC
20G1ALE355JN0NNNNN	Allen-Bradley	PowerFlex 755	355 A	400 HP	350 HP	300 HP	600 VAC
20G1ALE395JN0NNNNN	Allen-Bradley	PowerFlex 755	395 A	450 HP	400 HP	350 HP	600 VAC
20G1ALE435JN0NNNNN	Allen-Bradley	PowerFlex 755	435 A	500 HP	450 HP	350 HP	600 VAC
20G1ALE460JN0NNNNN	Allen-Bradley	PowerFlex 755	460 A	500 HP	500 HP	400 HP	600 VAC

These models cover a broad range of large-motor current requirements within the same product family.

36. 20G1ALE460JN0NNNNN Compared with 20G1ALE435JN0NNNNN

Parameter	20G1ALE435JN0NNNNN	20G1ALE460JN0NNNNN
Current	435 A	460 A
LD Rating	500 HP	500 HP
ND Rating	450 HP	500 HP
HD Rating	350 HP	400 HP
Voltage	600 VAC	600 VAC
Phase	3 Phase	3 Phase
Frame	Frame 8	Frame 8
Cooling	Air Cooled	Air Cooled
Communication	Embedded EtherNet/IP	Embedded EtherNet/IP
Cabinet Depth	800 mm class	800 mm class

The 460 A model provides additional current capacity compared with the 435 A configuration.

The Normal Duty rating increases from 450 HP to 500 HP, while the Heavy Duty rating increases from 350 HP to 400 HP.

37. 20G1ALE460JN0NNNNN Compared with 20G1ALE510JN0NNNNN

Parameter	20G1ALE460JN0NNNNN	20G1ALE510JN0NNNNN
Current	460 A	510 A
LD Rating	500 HP	550 HP
ND Rating	500 HP	500 HP
HD Rating	400 HP	450 HP
Voltage	600 VAC	600 VAC
Phase	3 Phase	3 Phase
Frame	Frame 8	Frame 8
Cooling	Air Cooled	Air Cooled
Communication	Embedded EtherNet/IP	Embedded EtherNet/IP
Cabinet Style	MCC Style	MCC Style

The 510 A model provides an additional current margin for larger motors and heavier applications.

The 460 A model is already a substantial high-current drive and is appropriate when the motor’s actual current and duty requirements remain within its rating.

38. Application Selection Guide

Application	Typical Requirement	20G1ALE460JN0NNNNN Application
Large Centrifugal Pump	Variable torque	Suitable
Cooling-Water Pump	Continuous operation	Suitable
Large Fan	Variable airflow	Suitable
Industrial Blower	Variable speed	Suitable
Conveyor	Controlled acceleration	Suitable with duty verification
Compressor	High-power motor control	Suitable with torque verification
Mixer	High torque	Suitable with HD verification
Process Machinery	Adjustable speed	Suitable
Mining Equipment	Heavy mechanical loading	Suitable with detailed sizing
Material Handling	High current and controlled speed	Suitable
Production Machinery	Coordinated speed control	Suitable
Utility Equipment	Large motor control	Suitable

The application descriptions indicate typical use cases and do not replace detailed motor and load sizing.

39. Electrical System Advantages

The 20G1ALE460JN0NNNNN combines high current capacity with network-based control.

The 460 A rating provides substantial capacity for large motors.

The 600 VAC three-phase configuration is suitable for high-power industrial electrical systems.

The AC input with precharge provides a defined input configuration.

The filtered input configuration can simplify system design where the specified filtering arrangement meets the application’s requirements.

The embedded EtherNet/IP interface supports centralized control and monitoring.

40. Mechanical System Advantages

The Frame 8 construction provides a large industrial platform for high-current motor control.

The 800 mm deep MCC-style configuration is suitable for larger electrical rooms and centralized motor-control installations.

The air-cooled design provides a practical cooling arrangement where sufficient cabinet ventilation and heat removal are available.

Because the equipment is physically large, installation planning should include access, lifting, ventilation, service clearance, and floor loading.

41. Control System Advantages

The drive can provide variable-speed control for large motors.

This allows the motor operating point to be adjusted according to the process.

Examples include:

• Adjusting pump speed according to flow demand.
• Adjusting fan speed according to airflow demand.
• Adjusting conveyor speed according to production throughput.
• Adjusting process machinery speed according to production requirements.
• Coordinating several large motors through a central control system.

The integrated communication interface also allows operating information to be exchanged with the control system.

42. Maintenance and Service Considerations

Regular maintenance should include:

• Cooling fan inspection.
• Airflow inspection.
• Ventilation inspection.
• Electrical connection inspection.
• Cabinet cleanliness.
• Motor cable inspection.
• Grounding inspection.
• Network connection inspection.
• Fault-history review.
• Alarm-history review.
• Temperature monitoring.
• Inspection for abnormal noise.
• Inspection for overheating.
• Inspection for dust accumulation.

A preventive-maintenance program can help identify problems with cooling, connections, and operating conditions before they develop into larger equipment issues.

43. Replacement Selection Checklist

When using the 20G1ALE460JN0NNNNN as a replacement drive, the following information should be checked.

Item	Information to Confirm
Existing Drive	Complete model number
Motor	Motor model and nameplate
Motor Power	HP / kW
Motor Voltage	Nameplate voltage
Motor Current	Full-load current
Motor Frequency	50 / 60 Hz
Load Type	Pump / Fan / Conveyor / Compressor / Other
Duty	LD / ND / HD
Communication	Required network
Cabinet	Available dimensions
Cooling	Ventilation arrangement
Braking	Required / Not Required
HIM	Required / Not Required
Filtering	Required configuration
CM Configuration	Required configuration
Motor Cable	Type and length
Grounding	Existing grounding system

A replacement should not be selected by matching only the horsepower value.

The motor current and actual application load should always be checked.

44. Product Specification Summary

Category	Specification
Brand	Allen-Bradley
Series	PowerFlex 755
Model	20G1ALE460JN0NNNNN
Product Type	AC Variable Frequency Drive
Rated Current	460 A
Voltage	600 VAC
Phase	3 Phase
Light Duty	500 HP
Normal Duty	500 HP
Heavy Duty	400 HP
Frame	Frame 8
Cooling	Forced Air / Air Cooled
Enclosure	Type 1 / IP20
Cabinet Style	800 mm Deep MCC Style
Input	AC with Precharge
DC Terminals	None
Filtering	Filtered
CM Jumper	Installed
Dynamic Braking	None
HIM	Blank / No HIM
Communication	Embedded EtherNet/IP
Approx. Height	2450 mm*
Approx. Width	600 mm*
Depth	800 mm
Approx. Weight	85–100 kg*

*Approximate engineering-planning values. Confirm the final mechanical drawing and shipping information before using these figures for fabrication or lifting calculations.

45. Detailed Product Description for Catalog or Sales Use

The Allen-Bradley 20G1ALE460JN0NNNNN PowerFlex 755 AC Drive is a high-power air-cooled variable frequency drive designed for large three-phase industrial motor applications.

The drive is rated at 460 A and operates within the 600 VAC three-phase class.

It uses a Frame 8 mechanical platform with an 800 mm deep MCC-style construction.

The model provides 500 HP Light Duty, 500 HP Normal Duty, and 400 HP Heavy Duty motor ratings.

The drive includes embedded EtherNet/IP communication, allowing it to be integrated into industrial automation systems for motor control, monitoring, diagnostics, and process coordination.

The specified configuration uses AC input with precharge, has no external DC terminals, uses filtered input, has the CM jumper installed, does not include dynamic braking, and is supplied without a HIM.

The combination of high current capacity, large-frame construction, network communication, and flexible duty ratings makes this model suitable for large pumps, fans, blowers, compressors, conveyors, process machinery, material-handling equipment, and other high-power rotating machinery.

46. Final Product Advantages

The principal advantages of the 20G1ALE460JN0NNNNN include:

• 460 A high-current capacity.
• 600 VAC three-phase operation.
• 500 HP Light Duty rating.
• 500 HP Normal Duty rating.
• 400 HP Heavy Duty rating.
• Frame 8 industrial construction.
• 800 mm deep MCC-style configuration.
• Embedded EtherNet/IP communication.
• Forced-air cooling.
• AC input with precharge.
• Filtered input configuration.
• CM jumper installed.
• Wide range of industrial applications.
• Suitable for centralized motor-control systems.
• Suitable for large pumps and fans.
• Suitable for conveyors and material-handling equipment.
• Suitable for large compressors and process machinery.
• Multiple related current ratings available within the PowerFlex 755 family.

47. Final Product Introduction

The Allen-Bradley 20G1ALE460JN0NNNNN PowerFlex 755 is a high-capacity industrial AC variable frequency drive designed for large three-phase motor applications.

With a 460 A current rating and 600 VAC three-phase configuration, it is intended for high-power motor-control systems.

Its 500 HP Light Duty, 500 HP Normal Duty, and 400 HP Heavy Duty ratings provide flexibility for different motor-load conditions.

The drive’s embedded EtherNet/IP capability makes it suitable for integration into networked industrial automation systems.

The Frame 8, air-cooled, 800 mm deep MCC-style construction is intended for larger electrical installations where adequate ventilation, service access, and floor space are available.

The model is well suited to applications such as large pumps, cooling systems, fans, blowers, conveyors, compressors, process machinery, material-handling systems, and large rotating industrial equipment.

For engineering selection, the most important values to verify are the motor nameplate current, motor voltage, duty classification, load torque, acceleration requirements, operating speed range, environmental conditions, motor cable arrangement, and required control functions.

The 20G1ALE460JN0NNNNN is therefore a high-power PowerFlex 755 configuration intended for demanding industrial motor-control systems where substantial current capacity, variable-speed operation, network integration, and large-frame construction are required.