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Allen-Bradley 20G1ABF460AN2NNNNN PowerFlex 755 AC Drive

1. Product Identification

Catalog Number: 20G1ABF460AN2NNNNN

Brand: Allen-Bradley

Product Family: PowerFlex 750 Series

Product Series: PowerFlex 755

Product Type: High-Power Air-Cooled AC Drive

Drive Type: Variable Frequency AC Drive

Rated Voltage Class: 690 VAC

Input: Three-Phase AC

Rated Current: 460 A

Frame: Frame 8

Cooling: Forced-Air / Air-Cooled

Construction: Type 1, IP20, 600 mm Deep MCC-Style

Input Configuration: AC Input with Precharge

DC Terminals: None

Filtering: EMC Filter

Dynamic Braking: None

Human Interface: Enhanced LCD / Full Numeric HIM

Network: Embedded EtherNet/IP

Light-Duty Rating: 500 kW

Normal-Duty Rating: 450 kW

Heavy-Duty Rating: 375 kW

Lifecycle Status: Discontinued

Discontinued Date: June 30, 2024

Direct Replacement: 20G1ABF460JN2NNNNN

The 20G1ABF460AN2NNNNN is a high-power Allen-Bradley PowerFlex 755 AC drive designed for large three-phase industrial motors. It belongs to the 690 V section of the PowerFlex 755 family and uses a Frame 8 power structure with a 460 A current rating.

The published power ratings are approximately 500 kW for light-duty operation, 450 kW for normal-duty operation, and 375 kW for heavy-duty operation. The drive is air cooled, uses a 600 mm deep MCC-style construction, includes embedded EtherNet/IP, and is configured with an enhanced LCD/full-numeric Human Interface Module.

The original 20G1ABF460AN2NNNNN has been discontinued. Its documented direct replacement is 20G1ABF460JN2NNNNN, which preserves the principal 460 A / 690 V / Frame 8 PowerFlex 755 configuration.

2. Basic Technical Parameters

Parameter	Specification
Model / Catalog Number	20G1ABF460AN2NNNNN
Brand	Allen-Bradley
Product Family	PowerFlex 750 Series
Product Series	PowerFlex 755
Product Type	Air-Cooled AC Drive
Rated Voltage	690 VAC
Input Phase	Three-Phase
Rated Current	460 A
Light-Duty Rating	500 kW
Normal-Duty Rating	450 kW
Heavy-Duty Rating	375 kW
Frame Size	Frame 8
Cooling Method	Forced Air
Enclosure Style	Type 1 / IP20
Mechanical Style	600 mm Deep MCC Style
Input Configuration	AC Input with Precharge
DC Terminals	None
EMC Filtering	EMC Filter
Dynamic Braking	None
HIM	Enhanced LCD / Full Numeric
Embedded Network	EtherNet/IP
Local Operator Interface	Included
Drive Family	PowerFlex 755
Lifecycle	Discontinued
Direct Replacement	20G1ABF460JN2NNNNN
Approx. Overall Dimensions	About 2100 × 610 × 600 mm
Approx. Weight	About 600–650 kg
Installation Type	Industrial MCC / Electrical Room
Typical Application	Large Industrial Motor Control

The catalog data identifies the model as a 690 V AC PowerFlex 755 drive and the product documentation identifies the 460 A configuration as a Frame 8 drive. The 600 mm mechanical size is also associated with this configuration.

The dimensions and weight above should be treated as engineering planning estimates rather than certified factory shipping dimensions and weight. For final mechanical design, lifting arrangements, floor loading, cabinet layout, and transportation planning, the exact dimensional drawing and shipping documentation for the specific unit should be checked.

3. Product Overview

The 20G1ABF460AN2NNNNN is designed for large industrial variable-speed motor applications where a conventional low-power VFD is not adequate.

It is part of the PowerFlex 755 platform, a high-performance industrial drive family intended for demanding motor-control applications.

The 460 A rating places this drive in the high-power range. Its 690 VAC operating class makes it particularly suitable for large industrial motors and installations where a medium-voltage drive is unnecessary but the motor power is too large for smaller low-voltage drive configurations.

The drive can regulate motor speed and torque while providing controlled acceleration and deceleration.

Instead of connecting the motor directly to a fixed-frequency AC supply, the drive generates a controlled output waveform and adjusts the operating conditions of the motor according to the required process speed and torque.

4. Power Rating

One of the most important characteristics of the 20G1ABF460AN2NNNNN is its multiple-duty rating.

Duty	Rated Power
Light Duty	500 kW
Normal Duty	450 kW
Heavy Duty	375 kW

These ratings represent different application duty categories.

The 500 kW light-duty rating is the highest power rating associated with this configuration.

The 450 kW normal-duty rating is appropriate for many continuous industrial processes where the overload requirement is moderate.

The 375 kW heavy-duty rating is the more conservative selection for applications that impose higher torque demand, more severe acceleration, or more demanding overload conditions.

The motor should therefore not be selected solely from the highest advertised kW value. The actual motor full-load current and machine duty must be compared with the appropriate drive rating.

5. 690 VAC Three-Phase Architecture

The drive operates in the 690 VAC three-phase class.

This voltage level is commonly used in larger industrial motor systems where significant motor power is required.

Compared with a lower-voltage system delivering the same motor power, a higher voltage can reduce the current required on the power circuit.

For large motors, this can provide practical benefits in terms of power-distribution design and conductor sizing.

The 690 V environment also requires appropriate electrical insulation, isolation, grounding, protection, cable selection, and installation procedures.

Because the drive operates at a high industrial voltage and carries hundreds of amperes, installation should be performed by qualified personnel using equipment and procedures appropriate for the voltage and power level.

6. Human Interface Module

The AN2 configuration is important because it differs from the no-HIM AN0 configuration.

The 20G1ABF460AN2NNNNN is associated with an Enhanced LCD / Full Numeric HIM configuration.

This provides a local operator and maintenance interface for drive setup, diagnostics, parameter adjustment, monitoring, and troubleshooting.

A local HIM can be particularly useful during:

• Initial commissioning
• Motor identification
• Parameter configuration
• Troubleshooting
• Fault investigation
• Local maintenance
• Drive status inspection
• Manual adjustment
• Service operations

This makes the AN2 version a useful choice where technicians need local access to the drive instead of relying entirely on a remote HMI or network connection.

7. Embedded EtherNet/IP

Embedded EtherNet/IP is another important characteristic of this PowerFlex 755 configuration.

The drive can participate directly in an industrial Ethernet automation architecture.

Typical information exchanged between the drive and the control system can include:

• Start command
• Stop command
• Speed reference
• Actual speed
• Output frequency
• Output current
• Drive status
• Warning status
• Fault status
• Diagnostic information
• Operating commands
• Parameter-related data

This makes the drive suitable for centralized control systems in which multiple motor drives are controlled and monitored from programmable controllers, operator stations, or supervisory systems.

8. Cooling System

The 20G1ABF460AN2NNNNN uses forced-air cooling.

At this power level, heat management is a major part of system design.

The drive contains power semiconductor devices and other electrical components that produce heat during operation.

The forced-air system moves air through the drive to maintain acceptable internal operating temperatures.

For installation, attention should be paid to:

• Air inlet conditions
• Air outlet conditions
• Ambient temperature
• Cabinet ventilation
• Dust accumulation
• Filter condition where applicable
• Cooling fan condition
• Air recirculation
• Clearance around the equipment

A drive that is installed in a poorly ventilated electrical room may operate at higher temperatures than expected even when its electrical loading is within the rated range.

9. MCC-Style Mechanical Construction

The model uses a 600 mm deep MCC-style configuration.

This is particularly useful for industrial electrical rooms and motor-control lineups where drives are integrated into a larger motor-control arrangement.

The 600 mm depth should be considered during:

• Cabinet planning
• Front access planning
• Cable routing
• Maintenance access
• Heat management
• Busbar integration
• Door arrangement
• Lifting and installation

The approximate physical envelope is listed for planning purposes as approximately:

2100 mm high × 610 mm wide × 600 mm deep

with an estimated mass of approximately:

600–650 kg

These values are not intended to replace the manufacturer’s exact dimensional drawing. The actual installation should be designed around the correct mechanical drawing for the exact configuration and revision.

10. EMC Filter Configuration

The catalog configuration includes an EMC filter.

Electromagnetic compatibility is important in industrial facilities containing multiple electrical systems.

A large drive can generate high-frequency electrical components as a result of its switching operation.

EMC considerations become particularly important when the drive is installed near:

• PLC systems
• Instrumentation
• Communication equipment
• Measurement equipment
• Control cabinets
• Sensitive sensors
• Industrial Ethernet equipment
• Other variable-frequency drives

The EMC filter configuration helps support an appropriately designed industrial electrical environment, although correct grounding, cable routing, shielding, bonding, and installation practices remain important.

11. Dynamic Braking

The 20G1ABF460AN2NNNNN is configured with no dynamic braking.

This should be taken into consideration for applications involving rapid deceleration or large rotating inertia.

When a motor decelerates, mechanical energy can be transferred back toward the drive’s DC bus.

If the application requires frequent or rapid deceleration, the appropriate braking method must be evaluated during system design.

Potentially demanding applications include:

• Large fans
• High-inertia machines
• Centrifuges
• Large conveyors
• Hoists
• Certain material-handling systems
• Machines with frequent stop/start cycles

The absence of a dynamic-braking configuration does not prevent the drive from being used for deceleration, but the required stopping performance and regenerative energy management must be properly evaluated.

12. Typical Applications

12.1 Large Pumps

The drive is well suited to large industrial pumping systems when the selected duty rating matches the motor and process requirements.

Typical applications include:

• Water treatment pumps
• Process-water pumps
• Cooling-water pumps
• Industrial circulation pumps
• Raw-water pumps
• Large transfer pumps
• Wastewater systems
• Industrial fluid-handling systems

Variable-speed operation allows pump capacity to follow the process requirement instead of operating continuously at maximum motor speed.

12.2 Large Fans

Large fans are another strong application area.

Examples include:

• Industrial exhaust fans
• Furnace fans
• Process ventilation
• Dust collection
• Cooling systems
• Large air-handling equipment
• Industrial blowers

Controlling fan speed can provide more precise process control and can reduce unnecessary energy consumption when full airflow is not required.

12.3 Conveyors

Large conveyors can require substantial motor power, especially in mining, bulk-material handling, cement, aggregate, and port applications.

The drive can provide controlled acceleration and deceleration.

This can help reduce:

• Belt shock
• Mechanical stress
• Sudden torque changes
• Material movement
• Starting current

The actual duty rating must be selected according to conveyor loading and acceleration requirements.

12.4 Mining Equipment

High-power drives are widely applicable to mining machinery.

Potential applications include:

• Conveyor systems
• Crushers
• Mills
• Fans
• Pumps
• Material-handling systems
• Processing equipment

The 690 V / 460 A configuration is particularly relevant where large motors are used throughout a mining or mineral-processing facility.

12.5 Cement and Aggregate Equipment

Cement plants and aggregate facilities contain many large rotating machines.

Potential applications include:

• Crushers
• Mills
• Fans
• Conveyors
• Material feeders
• Process pumps
• Dust extraction systems

The PowerFlex 755 architecture provides a flexible platform for coordinating these large motor loads with a plant automation system.

12.6 Steel and Metal Processing

Large motors are common in steel and metal-processing facilities.

Potential applications include:

• Large fans
• Pumps
• Conveyors
• Material handling
• Processing equipment
• Auxiliary machinery

The ability to control motor speed from a centralized automation system can be particularly useful in large process plants.

13. Main Product Advantages

13.1 High-Power Capability

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

The 500 kW light-duty rating provides considerable power capacity within a relatively standardized PowerFlex 755 architecture.

13.2 690 V Operation

The 690 V configuration is particularly appropriate for high-power industrial systems.

It provides a practical solution for large motors without moving immediately to a medium-voltage motor-drive architecture.

13.3 Multiple Duty Ratings

The drive supports three important application categories:

500 kW LD

450 kW ND

375 kW HD

This gives engineers greater flexibility when matching the drive to the actual process load.

13.4 Local LCD Interface

The Enhanced LCD / Full Numeric HIM provides a practical local interface.

Maintenance technicians can use the local interface for drive status, parameter setup, troubleshooting, and commissioning.

This is one of the primary configuration differences between the AN2 and AN0 variants.

13.5 Embedded EtherNet/IP

The embedded network capability simplifies integration with modern industrial automation systems.

The drive can become part of the overall machine or plant control architecture instead of operating as a standalone speed controller.

13.6 Industrial MCC Construction

The 600 mm deep MCC-style construction is appropriate for industrial electrical rooms and centralized motor-control installations.

This makes the drive suitable for large projects where many motor-control devices are installed together.

13.7 Air-Cooled Architecture

Forced-air cooling avoids the need for a liquid cooling system and provides a practical approach for high-power industrial applications.

The cooling system does, however, require proper ventilation and maintenance.

14. Maintenance Advantages

The local HIM makes maintenance work more convenient.

Technicians can inspect drive status and fault information without necessarily connecting a separate computer.

Routine maintenance can include:

• Cooling fan inspection
• Airflow inspection
• Terminal inspection
• Grounding inspection
• Cable inspection
• Network connection inspection
• Environmental inspection
• Fault-history review
• Motor-condition monitoring
• Cabinet ventilation inspection

The drive should be kept clean and operated within its specified environmental conditions.

15. Important Lifecycle Information

The original 20G1ABF460AN2NNNNN is a discontinued catalog number.

The documented discontinuation date is June 30, 2024.

The direct replacement is 20G1ABF460JN2NNNNN. The replacement is an active PowerFlex 755 configuration with the same 460 A / 690 V class and 600 mm mechanical size.

For an existing machine, the original AN2 catalog number remains useful because it identifies the historical configuration.

For a new installation or replacement project, the JN2 replacement should normally be evaluated first.

A replacement should not be selected solely because the voltage and current are identical. The complete configuration should also be checked, including enclosure style, HIM configuration, braking, filtering, control wiring, communication arrangement, firmware compatibility, motor data, and installation requirements.

16. Recommended Five Related PowerFlex 755 Models

Model	Voltage	Current	LD Rating	ND Rating	HD Rating	Frame	Cooling	HIM	Size
20G1ABF415AN2NNNNN	690 VAC	415 A	450 kW	400 kW	355 kW	8	Air	LCD / Full Numeric	600 mm
20G1ABF460AN0NNNNN	690 VAC	460 A	500 kW	450 kW	375 kW	8	Air	No HIM	600 mm
20G1ABF460JN2NNNNN	690 VAC	460 A	500 kW	450 kW	375 kW	8	Air	LCD / Full Numeric	600 mm
20G1ABF460JN4NNNNN	690 VAC	460 A	500 kW	450 kW	375 kW	8	Air	Local / Door HIM	600 mm
20G1ABF500AN0NNNNN	690 VAC	500 A	530 kW	500 kW	400 kW	8	Air	No HIM	600 mm

The 20G1ABF460JN2NNNNN is the most directly relevant alternative because it is the documented direct replacement for the AN2 version. The 415 A and 500 A models are useful when the motor current falls below or above the 460 A range. The JN4 version is useful when a different local HIM configuration is preferred.

17. Comparison of the Five Related Models

17.1 20G1ABF415AN2NNNNN

This model belongs to the same general 690 V PowerFlex 755 family but has a lower 415 A current rating.

Its power ratings are approximately 450 kW LD, 400 kW ND, and 355 kW HD.

It can be considered when the motor load is below the capacity required for the 460 A configuration.

17.2 20G1ABF460AN0NNNNN

This model uses the same 460 A electrical class but does not include the local HIM configuration of the AN2 version.

It is useful when the drive is intended to be controlled primarily through the automation network or external control system.

The AN0 version itself has also been discontinued, with a JN0 direct replacement available.

17.3 20G1ABF460JN2NNNNN

This is the most important replacement model for the product discussed here.

It is the direct replacement identified for the discontinued 20G1ABF460AN2NNNNN.

The replacement remains a 690 V, 460 A, Frame 8 PowerFlex 755 configuration with a 600 mm mechanical size.

17.4 20G1ABF460JN4NNNNN

This model is another 460 A / 690 V PowerFlex 755 configuration.

Its main distinction is the HIM arrangement.

It is worth considering when the application requires a local operator interface configuration different from the standard AN2/JN2 arrangement.

17.5 20G1ABF500AN0NNNNN

The 500 A version moves to a higher current capability.

Its published ratings are approximately:

• 530 kW LD
• 500 kW ND
• 400 kW HD

This makes it an appropriate comparison when the 460 A drive does not provide sufficient current or duty margin.

18. Five Same-Brand Comparison Models

The following models represent useful Allen-Bradley comparison products from different PowerFlex families and application levels.

Model	Series	Voltage Class	Current / Power Class	Typical Application	Cooling	Interface / Configuration
25B-D030N114	PowerFlex 525	480 VAC class	30 A class	General-purpose industrial motors	Air	Compact integrated drive
25C-D030N114	PowerFlex 523	480 VAC class	30 A class	Compact machines	Air	Compact drive
20G1ABC302JN4NNNNN	PowerFlex 755	480 VAC class	302 A class	Large industrial motors	Air	Local HIM
20G1ABC460JN4NNNNN	PowerFlex 755	480 VAC class	460 A class	High-power motor control	Air	Local HIM
20G1ABC650JN4NNNNN	PowerFlex 755	480 VAC class	650 A class	Very high-power industrial systems	Air	Local HIM

These models are not direct electrical replacements for the 690 V / 460 A 20G1ABF460AN2NNNNN.

They are better treated as same-brand comparison products.

For a 690 V high-power application, the 20G1ABF family remains the more relevant group because its voltage class, power range, and Frame 8 architecture are aligned with the original product.

19. Model Selection Table

Requirement	Recommended Model / Direction
Existing 20G1ABF460AN2NNNNN replacement	20G1ABF460JN2NNNNN
Same 460 A class but no HIM	20G1ABF460JN0NNNNN
Same 460 A class with alternate local HIM	20G1ABF460JN4NNNNN
Lower 690 V current requirement	20G1ABF415 series
Higher 690 V current requirement	20G1ABF500 series
Remote/network-focused operation	JN0 configuration
Local maintenance interface required	JN2 / JN4 configuration
Large pump	415 A / 460 A / 500 A according to motor current
Large fan	415 A / 460 A / 500 A according to motor current
Large conveyor	Select according to duty and overload
Crusher / high-torque application	Pay particular attention to HD rating
High-inertia deceleration	Evaluate braking requirements separately

20. Why the 20G1ABF460AN2NNNNN Is Different from the AN0 Version

The catalog suffix is significant.

The 20G1ABF460AN0NNNNN configuration is associated with a blank/no-HIM arrangement.

The 20G1ABF460AN2NNNNN configuration adds the Enhanced LCD / Full Numeric HIM arrangement.

Therefore, the two models can have essentially the same fundamental power section while being configured differently for local operator access.

This distinction matters in replacement projects.

If an existing machine uses local operator access through the drive-mounted HIM, replacing an AN2 drive with an AN0 configuration without providing an equivalent interface could change the maintenance and commissioning procedure.

Conversely, if the drive is controlled entirely from a central PLC and plant HMI, a no-HIM configuration may be adequate.

21. Typical Industrial System Architecture

A typical installation using this drive can include:

Incoming 690 V AC Supply

↓

Input Protection / Disconnect

↓

PowerFlex 755 460 A Drive

↓

Three-Phase Motor

↓

Pump / Fan / Conveyor / Process Machine

At the control level:

PLC / Automation Controller

↓

EtherNet/IP

↓

PowerFlex 755

↓

Motor Speed / Torque Control

The local Enhanced LCD / Full Numeric HIM can provide an additional maintenance interface at the drive.

22. Installation and Engineering Considerations

A drive of this size should be treated as a major electrical component rather than a simple plug-in VFD.

The following should be reviewed before installation:

Electrical

• Incoming voltage
• Available fault current
• Input protection
• Grounding
• Motor full-load current
• Motor insulation
• Motor cable specification
• Output cable length
• Short-circuit protection
• Control voltage
• Network wiring

Mechanical

• Cabinet dimensions
• Drive depth
• Drive weight
• Floor loading
• Lifting equipment
• Door clearance
• Cable entry
• Maintenance access

Environmental

• Ambient temperature
• Humidity
• Dust
• Corrosive atmosphere
• Altitude
• Ventilation
• Cooling-air quality

Control

• PLC compatibility
• EtherNet/IP architecture
• Start/stop strategy
• Speed-reference strategy
• Fault handling
• Emergency-stop architecture
• Local/remote control philosophy

Motor

• Motor voltage
• Motor current
• Motor power
• Motor frequency
• Motor speed
• Motor insulation system
• Encoder requirements where applicable
• Load inertia
• Acceleration time
• Deceleration time

23. Maintenance and Service

For long-term operation, preventive maintenance is particularly important for a large air-cooled drive.

The cooling system should be inspected regularly.

Dust, dirt, and other contaminants can restrict airflow and increase internal temperature.

The electrical connections should also be inspected according to the applicable maintenance procedure.

Particular attention should be given to:

• Power terminals
• Grounding points
• Control connections
• Network connections
• Cooling fans
• Air passages
• Cabinet ventilation
• Fault history
• Temperature-related warnings
• Motor current
• Motor operating conditions

The Enhanced LCD / Full Numeric HIM is useful for maintenance because technicians can obtain drive information directly at the equipment.

24. Advantages Summary

Feature	Practical Benefit
690 VAC	Suitable for large industrial motor systems
460 A	High current capacity
500 kW LD	High light-duty power capability
450 kW ND	Strong normal-duty capability
375 kW HD	Suitable for selected demanding loads
Frame 8	High-power industrial architecture
Forced Air	Practical high-power cooling method
600 mm MCC Style	Suitable for industrial electrical lineups
Embedded EtherNet/IP	Network-based automation
Enhanced LCD HIM	Local setup and diagnostics
EMC Filter	Supports EMC-oriented installation
AC Precharge	Controlled input charging arrangement
No DC Terminals	Defined AC-input configuration
No Dynamic Braking	Simple configuration for applications without dedicated braking
PowerFlex 755	Established large-drive platform
Direct Replacement Available	Easier migration to current JN2 configuration

25. Final Product Assessment

The Allen-Bradley 20G1ABF460AN2NNNNN is a high-capacity PowerFlex 755 AC drive designed for large three-phase industrial motors.

Its principal electrical characteristics are 690 VAC, 460 A, Frame 8, with approximately 500 kW light-duty, 450 kW normal-duty, and 375 kW heavy-duty ratings.

The combination of high voltage, high current, forced-air cooling, MCC-style construction, embedded EtherNet/IP, EMC filtering, and an Enhanced LCD / Full Numeric HIM makes it well suited to centralized industrial motor-control systems.

The product is especially appropriate for large pumps, fans, conveyors, compressors, mining equipment, cement machinery, process equipment, water systems, and other large rotating machinery.

The AN2 configuration is particularly useful when local drive access is required. The Enhanced LCD / Full Numeric HIM gives maintenance personnel direct access to drive information, parameters, alarms, and diagnostics.

From a system-integration perspective, embedded EtherNet/IP is another major advantage. It allows the drive to be integrated into an industrial control network rather than being operated only as a standalone motor controller.

The main limitation when purchasing this exact catalog number today is its lifecycle status. 20G1ABF460AN2NNNNN is discontinued, with June 30, 2024 identified as the discontinuation date. The documented direct replacement is 20G1ABF460JN2NNNNN.

For an existing installation, the AN2 catalog number remains valuable because it identifies the original equipment configuration.

For a new project, the JN2 replacement should normally be the first model to evaluate.

The approximate physical planning envelope is 2100 × 610 × 600 mm, with an estimated weight of approximately 600–650 kg. These figures should be regarded as preliminary engineering values rather than certified factory dimensions or shipping weight. The exact dimensional drawing should be used before finalizing cabinet construction, lifting equipment, floor loading, transportation, and maintenance clearances.

Overall, the 20G1ABF460AN2NNNNN can be characterized as a 690 V, 460 A, Frame 8, air-cooled PowerFlex 755 high-power AC drive with 500 kW LD / 450 kW ND / 375 kW HD capability and an Enhanced LCD / Full Numeric HIM.

For a replacement application, the most important related catalog number is 20G1ABF460JN2NNNNN. For capacity comparison, the 415 A and 500 A configurations provide useful lower- and higher-current alternatives.

The most important selection rule is to size the drive according to motor full-load current and actual application duty, rather than selecting it only from motor kW. This is especially important for heavy starting loads, high-inertia machinery, frequent acceleration and deceleration, and applications with significant overload requirements.