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Allen-Bradley 20G1ALE460AN0NNNNN PowerFlex 755 AC Drive

1. Product Overview

The Allen-Bradley 20G1ALE460AN0NNNNN is a high-power AC variable frequency drive belonging to the PowerFlex 755 series.

This model is designed for large three-phase industrial motor applications where high current capacity, variable-speed control, network communication, controlled acceleration and deceleration, and reliable industrial operation are required.

The drive is rated at 460 A and is designed for a 600 VAC, three-phase electrical system. It uses a Frame 8 mechanical platform and an 800 mm deep MCC-style construction.

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

Its published motor-duty ratings are 500 HP for Light Duty, 500 HP for Normal Duty, and 400 HP for Heavy Duty, giving the same drive a useful range across different industrial load conditions.

2. Brand and Product Series

Item	Description
Brand	Allen-Bradley
Product Family	PowerFlex
Series	PowerFlex 755
Product Type	AC Variable Frequency Drive
Model	20G1ALE460AN0NNNNN
Drive Construction	Air Cooled
Frame	Frame 8
Voltage Class	600 VAC
Input Phase	3 Phase
Rated Current	460 A
Communication	Embedded EtherNet/IP
Enclosure	Type 1 / IP20
Cabinet Style	800 mm Deep MCC Style

The PowerFlex 755 series is intended for industrial motor-control applications requiring more flexibility and capacity than smaller general-purpose variable frequency drives.

The 20G1ALE460AN0NNNNN is positioned in the high-current range of this product family and is suitable for large motors and large mechanical systems.

3. Main Technical Specifications

Parameter	Specification
Model	20G1ALE460AN0NNNNN
Brand	Allen-Bradley
Series	PowerFlex 755
Product Type	AC Variable Frequency Drive
Rated Current	460 A
Voltage Rating	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	MCC Style
Cabinet Depth	800 mm
Input Configuration	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 Application	Three-Phase AC Motor
Installation Class	Large Industrial Drive
Approximate Height	Approx. 2450 mm*
Approximate Width	Approx. 600 mm*
Depth	800 mm
Approximate Weight	Approx. 85–100 kg*

*The 800 mm depth is associated with the specified MCC-style configuration. The overall height, width, and weight should be treated as approximate engineering-planning values unless the final mechanical drawing for the supplied unit has been confirmed.

The primary electrical specifications for this exact catalog configuration are 460 A, 600 VAC, three-phase, Frame 8, 500 HP LD, 500 HP ND, and 400 HP HD.

4. Product Configuration

The catalog number 20G1ALE460AN0NNNNN represents a specific combination of electrical, mechanical, communication, filtering, and accessory characteristics.

The configuration is an air-cooled PowerFlex 755 AC drive with embedded EtherNet/IP.

It uses AC input with precharge and does not provide external DC terminals.

The enclosure configuration is Type 1 / IP20 with an 800 mm deep MCC-style mechanical arrangement.

The drive is filtered and uses the specified CM jumper configuration. Dynamic braking is not included in this particular configuration, and the drive is supplied without a HIM.

This makes the model suitable for installations where the drive is integrated into a larger electrical cabinet or motor-control environment and controlled or monitored through an industrial network.

5. Duty Ratings

The 20G1ALE460AN0NNNNN provides three published motor-duty ratings.

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

This is an important feature when selecting the drive for different load characteristics.

For a relatively moderate load profile, the Light Duty rating can be used.

For general industrial applications with regular loading and changing process demand, the Normal Duty rating can be considered.

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

The actual drive selection should be based on motor nameplate current and the application’s overload requirements rather than horsepower alone.

6. Light Duty Operation

Under Light Duty operation, the drive is rated for motors up to 500 HP.

This rating is useful for applications where the motor normally operates at a relatively stable load and the required overload capability is less demanding than a heavy-duty mechanical application.

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

In these applications, the motor does not necessarily need to operate at maximum torque across the entire speed range.

The drive can adjust motor speed according to process requirements while maintaining controlled motor operation.

7. Normal Duty Operation

The Normal Duty rating is also 500 HP for this model.

This makes the 20G1ALE460AN0NNNNN particularly useful for applications where the motor operates continuously or frequently under normal industrial loading.

Normal Duty applications may include process pumps, large fans, compressors, conveyors with moderate loading, and various industrial production systems.

The motor’s actual full-load current remains the primary value for drive selection.

8. Heavy Duty Operation

For Heavy Duty operation, the drive is rated at 400 HP.

The lower horsepower rating under Heavy Duty conditions reflects the more demanding thermal and overload requirements associated with high-torque applications.

Typical Heavy Duty applications can include:

• Large conveyors.
• Mixers.
• Crushers.
• Material-handling equipment.
• High-torque mechanical systems.
• Certain compressors.
• Process machinery.
• Large mechanical drives.

When selecting the drive for one of these applications, the motor current, acceleration torque, load inertia, overload requirements, and operating cycle should all be considered.

9. Electrical Input Characteristics

The drive is designed for a 600 VAC three-phase input system.

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

The AC input with precharge configuration provides a controlled method of energizing the drive’s internal DC bus.

The absence of external DC terminals is an important configuration characteristic and should be considered when comparing this model with other PowerFlex 755 variants.

10. Output and Motor Control

The 20G1ALE460AN0NNNNN is designed to control large three-phase AC motors.

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

The drive controls motor speed by regulating the electrical output supplied to the motor.

This allows the motor to operate at different speeds according to process demand.

Variable-speed operation can be particularly useful for pumps, fans, conveyors, compressors, and process equipment because the motor does not have to operate continuously at full speed when the process does not require maximum capacity.

11. Product Introduction

The Allen-Bradley 20G1ALE460AN0NNNNN PowerFlex 755 is a large-frame industrial variable frequency drive designed for high-power motor applications.

Its 460 A current rating places it in a high-capacity range suitable for large industrial motors.

The combination of 600 VAC three-phase operation, 500 HP Light Duty capability, 500 HP Normal Duty capability, and 400 HP Heavy Duty capability makes this configuration useful across several different industrial load types.

The drive is particularly appropriate where the motor needs variable-speed operation and where the drive must communicate with a larger automation system.

The embedded EtherNet/IP interface allows the drive to become part of an integrated control architecture rather than functioning only as a standalone motor starter.

12. Embedded EtherNet/IP Communication

The drive includes embedded EtherNet/IP communication.

This is useful for industrial automation systems where the drive needs to exchange commands, references, status information, fault information, and operating data with a controller or supervisory system.

Typical network information may include:

• Start command.
• Stop command.
• Speed reference.
• Output frequency.
• Motor current.
• Drive status.
• Fault status.
• Alarm status.
• Operating condition.
• Diagnostic information.
• Control commands.
• Process-related drive values.

For installations containing multiple large drives, network communication can significantly simplify the overall control architecture.

13. Network Integration

The 20G1ALE460AN0NNNNN can be integrated into an industrial Ethernet control system.

For example, a production line containing multiple pumps, fans, conveyors, and compressors can use a common control system to monitor individual drives.

The controller can issue commands and receive operating information through the network.

This can reduce the amount of traditional point-to-point wiring required for basic drive commands and monitoring functions.

It can also make drive information available to an operator interface or supervisory system.

14. CM Jumper Configuration

The specified configuration uses the CM jumper installed.

Common-mode configuration is an important consideration in variable frequency drive installations because high-frequency electrical effects can influence motor cables, grounding, electromagnetic compatibility, and motor-bearing considerations.

The appropriate configuration should be matched to the complete installation.

Important factors include:

• Motor cable length.
• Motor cable type.
• Grounding system.
• Motor construction.
• Installation environment.
• Electromagnetic compatibility requirements.
• System grounding arrangement.

The catalog configuration identifies the CM jumper as installed.

15. Cooling System

The 20G1ALE460AN0NNNNN uses forced-air cooling.

Because this is a high-current drive, thermal management is an important part of the installation.

The cabinet should provide sufficient airflow through the drive cooling system.

Hot exhaust air should not be allowed to circulate back into the drive’s cooling inlet.

The electrical room should also have sufficient heat-removal capability for the entire drive installation.

Cooling-system maintenance should include inspection of fans, ventilation paths, air filters where applicable, and accumulated dust.

16. Mechanical Construction

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

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

*Approximate planning values. Final mechanical drawings should be used for cabinet fabrication, transportation, lifting, foundation loading, service clearance, and installation planning.

The 800 mm depth is a particularly important dimension because this is a large industrial drive rather than a compact wall-mounted VFD.

17. Dimensions and Weight

Physical dimensions and weight should be considered during the early stages of installation planning.

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

The 800 mm depth is the most important confirmed mechanical characteristic of the specified configuration.

The overall height and width can depend on the final mechanical arrangement.

The approximate weight should also be treated as a planning value because accessories, shipping configuration, cabinet hardware, and other installation-specific components can affect the final weight.

For lifting and transportation, the final equipment documentation should always be used.

18. Product Applications

The 20G1ALE460AN0NNNNN is suitable for a broad range of high-power industrial motor applications.

Common application areas include:

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

19. Pump Applications

Large centrifugal pumps are one of the most common application categories for high-power VFDs.

The drive can regulate pump speed according to actual process demand.

Typical applications include:

• Water distribution.
• Cooling-water circulation.
• Industrial water systems.
• Wastewater treatment.
• Process-water systems.
• Boiler-related circulation.
• Chemical processing.
• Industrial utility systems.
• Large irrigation systems.

Variable-speed control can allow the pump to operate at a speed appropriate to the current process requirement rather than continuously running at maximum speed.

20. Fan and Blower Applications

The drive is also suitable for large fans and blowers.

Typical applications include:

• Industrial ventilation.
• Furnace systems.
• Exhaust systems.
• Dust collection.
• Cooling systems.
• Air-handling equipment.
• Industrial process ventilation.
• Large building utility systems.
• Mining ventilation.
• Combustion-air systems.

Fan applications often have changing airflow requirements.

A variable frequency drive allows the motor speed to be adjusted according to airflow demand.

21. Conveyor Applications

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

The 460 A PowerFlex 755 configuration can be used for applications such as:

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

Controlled acceleration can help reduce sudden mechanical loading on the conveyor system.

Speed control can also allow production throughput to be adjusted according to process requirements.

22. Compressor Applications

The drive can also be used with large compressors.

Potential applications include:

• Industrial air systems.
• Process compressors.
• Utility compressors.
• Manufacturing facilities.
• Gas-processing systems.
• Cooling systems.

Compressor applications require careful analysis of the compressor torque curve and operating range.

The motor current should be checked carefully against the drive’s duty rating.

23. Process Machinery

The PowerFlex 755 platform can be applied to a wide variety of process machinery.

Examples include:

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

Where the process requires adjustable speed, controlled acceleration, and centralized monitoring, a high-power variable frequency drive can be a practical solution.

24. Main Product Advantages

24.1 High 460 A Current Rating

The 460 A capacity makes the drive suitable for large industrial motors.

This provides greater current capacity than the 395 A and 435 A configurations within the same general product family.

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24.2 500 HP Light Duty Rating

The drive supports up to 500 HP under the specified Light Duty classification.

This makes it suitable for large variable-torque loads and other applications with moderate overload requirements.

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24.3 500 HP Normal Duty Rating

The 500 HP Normal Duty rating gives the drive substantial capacity for general industrial motor applications.

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24.4 400 HP Heavy Duty Rating

The 400 HP Heavy Duty rating provides a substantial capacity for higher-torque applications.

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24.5 Embedded EtherNet/IP

The integrated network interface simplifies integration with industrial control systems.

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24.6 Large Frame 8 Construction

Frame 8 construction is appropriate for large industrial drive installations.

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24.7 800 mm MCC-Style Configuration

The MCC-style mechanical arrangement makes the drive suitable for larger electrical rooms and motor-control-center installations.

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24.8 Forced-Air Cooling

Forced-air cooling provides a practical thermal-management method for high-power drive equipment when adequate ventilation is available.

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24.9 Flexible Application Range

The drive can be used in pumps, fans, conveyors, compressors, process machinery, and other industrial rotating equipment.

25. Electrical Advantages

The 20G1ALE460AN0NNNNN provides several useful electrical characteristics for large industrial systems.

The 460 A current rating provides substantial motor capacity.

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

The AC input with precharge provides a controlled input arrangement.

The filtered configuration is suitable for installations where input-side filtering is part of the required drive configuration.

The embedded EtherNet/IP interface provides a convenient connection between the drive and the industrial control system.

26. Mechanical Advantages

The Frame 8 architecture is designed for large drive installations.

The 800 mm deep MCC-style arrangement provides a cabinet-oriented installation format.

This can be useful where multiple large drives are installed within the same electrical room.

The mechanical construction also provides a clear separation between the high-power drive equipment and the surrounding control-system components.

27. Control Advantages

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

This can be useful for:

• Flow control.
• Pressure control.
• Conveyor speed control.
• Production speed control.
• Fan airflow control.
• Compressor control.
• Process-machine speed regulation.

The drive can therefore function as part of the process-control system rather than simply serving as an electronic motor starter.

28. Maintenance Advantages

Network connectivity can simplify troubleshooting and maintenance.

Drive status and fault information can be made available through the automation system.

Maintenance personnel can use this information to identify abnormal operating conditions and determine whether further inspection is required.

For systems with many drives, centralized monitoring can reduce the need to inspect every drive individually during routine troubleshooting.

29. Installation Requirements

Before installation, the following factors should be evaluated:

• Electrical supply voltage.
• Input current capacity.
• Motor voltage.
• Motor nameplate current.
• Motor horsepower.
• Duty cycle.
• Ambient temperature.
• Installation altitude.
• Cabinet ventilation.
• Cooling airflow.
• Motor cable length.
• Motor cable type.
• Grounding.
• Electromagnetic compatibility.
• Service clearance.
• Network cable routing.
• Input protection.
• Short-circuit requirements.
• Lifting equipment.
• Floor loading.
• Cabinet access.

Because this is a large Frame 8 drive, mechanical planning should be completed before equipment delivery.

30. Cooling and Heat Dissipation

Heat management is particularly important for high-power variable frequency drives.

The installation should provide sufficient airflow around the drive.

Ventilation openings should remain unobstructed.

The cooling fans should be inspected regularly.

Dust accumulation should be controlled, particularly in industrial environments containing:

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

Restricted airflow can increase operating temperature and reduce the available thermal margin of the drive.

31. Typical Industrial Equipment

Equipment	Typical Application
Large Pump	Water and process-flow control
Cooling Pump	Industrial cooling circulation
Large Fan	Variable airflow
Blower	Industrial ventilation
Compressor	Process and utility systems
Conveyor	Material handling
Mixer	Process mixing
Agitator	Chemical and process equipment
Production Machine	Variable-speed manufacturing
Mining Equipment	High-power mechanical drive
Material Handling	Controlled acceleration and speed
Process Machinery	Adjustable motor operation

The suitability of the drive should always be verified against the actual motor current and load requirements.

32. Motor Selection Considerations

The motor nameplate should be reviewed before selecting the drive.

Important motor information includes:

• Rated voltage.
• Full-load current.
• Rated frequency.
• Rated horsepower.
• Rated speed.
• Motor efficiency.
• Power factor.
• Service factor.
• Starting characteristics.
• Required operating range.

The 500 HP rating does not mean that every 500 HP motor can automatically be used with the drive.

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

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

33. Same-Series Recommended Models

The following PowerFlex 755 models provide useful comparisons around the 460 A configuration.

Model	Series	Current	LD Rating	ND Rating	HD Rating	Voltage	Frame
20G1ALE355AN0NNNNN	PowerFlex 755	355 A	400 HP	350 HP	300 HP	600 VAC	Frame 8
20G1ALE395AN0NNNNN	PowerFlex 755	395 A	450 HP	400 HP	350 HP	600 VAC	Frame 8
20G1ALE435AN0NNNNN	PowerFlex 755	435 A	500 HP	450 HP	350 HP	600 VAC	Frame 8
20G1ALE460AN0NNNNN	PowerFlex 755	460 A	500 HP	500 HP	400 HP	600 VAC	Frame 8
20G1ALE510AN0NNNNN	PowerFlex 755	510 A	550 HP	500 HP	450 HP	600 VAC	Frame 8

These models form a practical group for applications requiring similar high-power 600 VAC drive configurations. The published catalog descriptions identify the 355 A, 395 A, 435 A, 460 A, and 510 A versions with the corresponding duty ratings shown above.

34. Same-Series Comparison Table

Parameter	20G1ALE355AN0NNNNN	20G1ALE395AN0NNNNN	20G1ALE435AN0NNNNN	20G1ALE460AN0NNNNN	20G1ALE510AN0NNNNN
Series	PowerFlex 755	PowerFlex 755	PowerFlex 755	PowerFlex 755	PowerFlex 755
Current	355 A	395 A	435 A	460 A	510 A
LD	400 HP	450 HP	500 HP	500 HP	550 HP
ND	350 HP	400 HP	450 HP	500 HP	500 HP
HD	300 HP	350 HP	350 HP	400 HP	450 HP
Voltage	600 VAC	600 VAC	600 VAC	600 VAC	600 VAC
Phase	3 Phase	3 Phase	3 Phase	3 Phase	3 Phase
Frame	Frame 8	Frame 8	Frame 8	Frame 8	Frame 8
Cooling	Air Cooled	Air Cooled	Air Cooled	Air Cooled	Air Cooled
EtherNet/IP	Embedded	Embedded	Embedded	Embedded	Embedded
MCC Depth	800 mm class	800 mm class	800 mm class	800 mm class	800 mm class

This group provides a straightforward way to compare current capacity.

The 460 A version sits above the 435 A configuration and below the 510 A configuration in this group.

35. Five Same-Brand Popular Reference Models

Model	Brand	Series	Current	LD Rating	ND Rating	HD Rating	Voltage
20G1ALE295AN0NNNNN	Allen-Bradley	PowerFlex 755	295 A	350 HP	300 HP	250 HP	600 VAC
20G1ALE355AN0NNNNN	Allen-Bradley	PowerFlex 755	355 A	400 HP	350 HP	300 HP	600 VAC
20G1ALE395AN0NNNNN	Allen-Bradley	PowerFlex 755	395 A	450 HP	400 HP	350 HP	600 VAC
20G1ALE435AN0NNNNN	Allen-Bradley	PowerFlex 755	435 A	500 HP	450 HP	350 HP	600 VAC
20G1ALE460AN0NNNNN	Allen-Bradley	PowerFlex 755	460 A	500 HP	500 HP	400 HP	600 VAC

These five models provide a useful high-power comparison range within the same brand and PowerFlex 755 family.

36. 20G1ALE460AN0NNNNN Compared with 20G1ALE435AN0NNNNN

Parameter	20G1ALE435AN0NNNNN	20G1ALE460AN0NNNNN
Current	435 A	460 A
LD	500 HP	500 HP
ND	450 HP	500 HP
HD	350 HP	400 HP
Voltage	600 VAC	600 VAC
Frame	Frame 8	Frame 8
Cooling	Air Cooled	Air Cooled
Cabinet Depth	800 mm	800 mm
EtherNet/IP	Embedded	Embedded

The 460 A model provides higher current capacity than the 435 A model.

The most notable difference is the increased Normal Duty and Heavy Duty rating.

This can make the 460 A configuration useful when the motor operates under a more demanding load profile.

37. 20G1ALE460AN0NNNNN Compared with 20G1ALE510AN0NNNNN

Parameter	20G1ALE460AN0NNNNN	20G1ALE510AN0NNNNN
Current	460 A	510 A
LD	500 HP	550 HP
ND	500 HP	500 HP
HD	400 HP	450 HP
Voltage	600 VAC	600 VAC
Frame	Frame 8	Frame 8
Cooling	Air Cooled	Air Cooled
Network	Embedded EtherNet/IP	Embedded EtherNet/IP
Cabinet Style	MCC Style	MCC Style

The 510 A version provides additional current capacity for applications requiring a larger drive.

The 460 A model remains a substantial high-current configuration and is appropriate where the motor’s actual current and duty requirements fall within its rating.

38. Application Selection Guide

Application	Typical Requirement	Suitability
Large Centrifugal Pump	Variable torque	Excellent application category
Large Cooling 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	Variable speed	Suitable
Mining Equipment	High mechanical load	Suitable with detailed sizing
Material Handling	High current and controlled speed	Suitable
Production Line	Coordinated motor control	Suitable
Utility Equipment	Large motor control	Suitable

The table describes application categories rather than guaranteeing suitability for every individual machine.

39. Electrical System Advantages

The 20G1ALE460AN0NNNNN combines a high current rating with network-based control.

This makes it suitable for centralized industrial control architectures.

The 600 VAC three-phase input configuration is intended for high-power electrical systems.

The AC input with precharge provides a defined input configuration for the drive.

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

40. Mechanical System Advantages

The 800 mm deep MCC-style construction is designed around large industrial installations.

This configuration can be integrated into larger electrical rooms and motor-control-center arrangements.

The Frame 8 platform provides the mechanical scale necessary for high-current motor control.

Because of the physical size of the equipment, sufficient front access, ventilation, and service space should be incorporated into the installation.

41. Maintenance and Service Considerations

Regular maintenance should include:

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

A preventive-maintenance program can help identify cooling and electrical problems before they become major equipment failures.

42. Typical Replacement Considerations

When replacing an existing drive with a 20G1ALE460AN0NNNNN, the following information should be recorded first:

Replacement Item	Information to Confirm
Existing Drive	Model and complete catalog number
Motor	Manufacturer and model
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	Network type
Cabinet	Dimensions and mounting
Cooling	Existing ventilation arrangement
Braking	Required or not required
HIM	Required or not required
Filtering	Required configuration
CM Configuration	Required arrangement
Cable	Motor cable type and length

A replacement should not be selected by matching only the visible model number.

The complete application requirements should be checked before installation.

43. Product Specification Summary

Category	Specification
Brand	Allen-Bradley
Series	PowerFlex 755
Model	20G1ALE460AN0NNNNN
Product Type	AC Variable Frequency Drive
Rated Current	460 A
Voltage	600 VAC
Phase	3 Phase
LD Rating	500 HP
ND Rating	500 HP
HD Rating	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. Final dimensions and weight should be confirmed from the exact mechanical configuration before fabrication, lifting, transportation, or installation.

44. Detailed Product Description for Catalog Use

The Allen-Bradley 20G1ALE460AN0NNNNN PowerFlex 755 AC Drive is a high-power, air-cooled variable frequency drive designed for large three-phase industrial motors.

The unit is rated at 460 A and 600 VAC, with a Frame 8, 800 mm deep MCC-style configuration.

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

The drive incorporates embedded EtherNet/IP communication for integration with industrial automation and control systems.

The specified configuration uses AC input with precharge, no external DC terminals, filtered input, CM jumper installed, no dynamic braking, and no HIM.

Its large-frame construction makes it suitable for industrial electrical rooms, MCC installations, process plants, production facilities, pumping stations, material-handling systems, and other applications requiring high-capacity motor control.

45. Final Product Advantages Summary

The main advantages of the 20G1ALE460AN0NNNNN can be summarized as follows:

• 460 A high-current capacity for large industrial motors.
• 500 HP Light Duty rating.
• 500 HP Normal Duty rating.
• 400 HP Heavy Duty rating.
• 600 VAC three-phase operation.
• Frame 8 high-power construction.
• 800 mm deep MCC-style configuration.
• Embedded EtherNet/IP communication.
• Forced-air cooling.
• AC input with precharge.
• Filtered configuration.
• Flexible use across pumps, fans, compressors, conveyors, and process machinery.
• Suitable for centralized industrial automation systems.
• Useful for large motor replacement and new equipment projects.
• Multiple related current ratings available within the same PowerFlex 755 family.

46. Final Product Introduction

The Allen-Bradley 20G1ALE460AN0NNNNN is a high-capacity PowerFlex 755 AC variable frequency drive intended for large industrial motor-control applications.

With its 460 A current rating, 600 VAC three-phase input, and Frame 8 construction, the drive is designed for applications requiring substantial electrical capacity and reliable variable-speed motor control.

The 500 HP Light Duty and Normal Duty ratings, together with the 400 HP Heavy Duty rating, provide flexibility across a wide range of industrial load conditions.

The embedded EtherNet/IP interface allows the drive to be incorporated into networked automation systems, while the air-cooled MCC-style construction provides a practical arrangement for large industrial electrical installations.

The model is particularly suitable for large pumps, fans, blowers, conveyors, compressors, process machinery, material-handling equipment, and other high-power rotating machinery.

For engineering selection, the most important values are the motor nameplate current, required duty classification, operating voltage, load characteristics, overload requirement, environmental conditions, and installation arrangement.

The 20G1ALE460AN0NNNNN is therefore best suited to applications where a high-current PowerFlex 755 drive is required together with industrial network connectivity and a large-frame cabinet-style installation.