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Allen-Bradley 20G1ALF460AN2NNNNN PowerFlex 755 AC Drive

1. Product Overview

The Allen-Bradley 20G1ALF460AN2NNNNN is a high-power PowerFlex 755 AC drive designed for demanding industrial motor-control applications where high output power, stable speed control, reliable operation, and flexible system integration are required.

This model belongs to the high-power 690 VAC class of the PowerFlex 755 family and is intended for three-phase industrial motor applications. Its 460 A rating places it in the upper range of Frame 8 drive configurations, making it suitable for large motors used in pumps, fans, compressors, conveyors, process equipment, material handling machinery, and other heavy industrial systems.

The drive is designed around a modular industrial architecture. This allows the drive system to accommodate different control, feedback, communication, safety, and application requirements without changing the basic high-power drive platform.

The 20G1ALF460AN2NNNNN is particularly suitable for applications where a conventional fixed-speed motor starter does not provide sufficient process control. By controlling motor speed and torque electronically, the drive can adjust equipment operation according to the actual process requirement instead of continuously operating the motor at full speed.

For large rotating equipment, this can provide better process control, smoother acceleration and deceleration, reduced mechanical stress, and more flexible operating conditions.

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2. Brand and Product Series

Item	Specification
Brand	Allen-Bradley
Series	PowerFlex 755
Product Type	AC Variable Frequency Drive
Drive Family	PowerFlex 750-Series
Model	20G1ALF460AN2NNNNN
Application Class	High-power industrial motor control
Input	Three-phase AC
Voltage Class	690 VAC
Frame	Frame 8
Cooling	Forced-air / air-cooled
Typical Installation	Industrial cabinet or MCC-style installation
Communication Capability	EtherNet/IP-based system integration
Motor Control	Variable-speed AC motor control
Intended Environment	Industrial applications

The PowerFlex 755 family is designed as a flexible industrial AC drive platform. Different frame sizes and voltage classes allow the family to cover applications ranging from relatively small industrial motors to very large high-power motors.

The 20G1ALF460AN2NNNNN represents the 690 VAC, high-power portion of this product family.

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3. Main Product Parameters

Parameter	20G1ALF460AN2NNNNN
Model	20G1ALF460AN2NNNNN
Brand	Allen-Bradley
Series	PowerFlex 755
Drive Type	AC Variable Frequency Drive
Input Voltage	690 VAC
Input Phase	3 Phase
Rated Current	460 A
Light-Duty Rating	500 kW
Normal-Duty Rating	450 kW
Heavy-Duty Rating	375 kW
Voltage Code	F – 690 VAC class
Frame Size	Frame 8
Cooling Method	Forced Air
Enclosure Style	IP20 / Type 1 MCC-style configuration
Installation Style	Floor/cabinet-oriented high-power installation
Input Configuration	AC input with precharge
DC Terminals	Configuration-dependent; catalog verification recommended
Filtering	Filtered configuration
Dynamic Braking	Configuration-dependent according to catalog suffix
Human Interface Module	Blank / configuration-dependent
Communication	EtherNet/IP capable
Motor Type	Three-phase AC motors
Control Application	Speed, torque and process control
Approximate Height	2453 mm
Approximate Width	600 mm
Approximate Depth	800 mm
Approximate Weight	623 kg
Cooling Requirement	Forced-air ventilation
Application Level	Heavy industrial
Typical Motor Range	Up to approximately 500 kW LD depending on application conditions

The exact suffix configuration should always be checked against the drive nameplate and the purchasing configuration before installation because PowerFlex 755 catalog numbers can contain option information for enclosure, filtering, braking, operator interface, and other hardware features.

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4. Electrical Specification

The main electrical rating of this drive is 690 VAC, three-phase, with a nominal continuous current rating of 460 A.

The 690 VAC class is commonly used for large industrial motors because operating at a higher voltage allows substantial motor power to be transmitted with lower current than would be required at lower voltage levels.

For a large motor installation, this can reduce conductor size requirements compared with an equivalent lower-voltage system and can be useful in large process plants, pumping stations, mining facilities, marine-related equipment, large ventilation systems, and heavy manufacturing equipment.

The drive’s 460 A current rating places it in the high-power Frame 8 range.

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5. Power Ratings

The PowerFlex 755 690 VAC Frame 8 rating structure provides different power ratings depending on the required duty cycle.

Duty Rating	Output Rating
Light Duty (LD)	500 kW
Normal Duty (ND)	450 kW
Heavy Duty (HD)	375 kW
Rated Current	460 A
Voltage	690 VAC
Phase	3 Phase
Frame	Frame 8

The three duty classifications are important when selecting the drive.

A motor that normally operates at relatively steady load can often be selected according to the normal-duty rating.

Applications involving higher continuous loading, frequent acceleration, high starting torque, shock loading, or demanding overload conditions should be evaluated against the heavy-duty rating.

The 500 kW light-duty rating provides a higher available motor-power range for applications where the load profile is suitable.

The correct rating should therefore be selected from the actual motor nameplate current and the real mechanical load profile rather than by motor kW alone.

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6. Voltage and Current Characteristics

Parameter	Specification
Model	20G1ALF460AN2NNNNN
Nominal Input Voltage	690 VAC
Input Frequency	50/60 Hz class industrial supply
Input Phase	Three-phase
Rated Output Current	460 A
Duty Class	LD / ND / HD
Maximum Listed LD Power	500 kW
Maximum Listed ND Power	450 kW
Maximum Listed HD Power	375 kW
Frame	Frame 8
Motor Output	Variable-frequency three-phase AC
Cooling	Forced air

The actual allowable input voltage range, output frequency range, overload capability, carrier-frequency selection, and other operating limits depend on the complete drive configuration and installation conditions.

For engineering purposes, the motor nameplate current should remain the primary reference for drive sizing.

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7. Dimensions and Weight

Because this is a large Frame 8 high-power drive, mechanical planning is an important part of installation.

Mechanical Parameter	Approximate Value
Model	20G1ALF460AN2NNNNN
Frame	Frame 8
Height	2453 mm
Width	600 mm
Depth	800 mm
Approximate Weight	623 kg
Enclosure Style	IP20 / Type 1 MCC-style
Installation	Floor-mounted / cabinet-oriented
Cooling	Forced air
Maintenance Access	Front access with additional ventilation clearance
Shipping Consideration	Heavy industrial equipment
Floor Loading	Must be checked before installation

The dimensions above should be treated as engineering planning dimensions rather than fabrication dimensions.

For actual panel construction, cabinet fabrication, lifting, transportation, floor loading, and maintenance-access calculations, the final mechanical drawing for the exact configuration should be used.

At approximately 623 kg, this drive should be handled as heavy industrial equipment. The installation area should have sufficient structural capacity, appropriate lifting provisions, and adequate access for maintenance.

The 800 mm depth is especially important when designing a cabinet line-up or MCC-style installation because sufficient rear and front working space must be considered in addition to the equipment depth itself.

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8. Product Construction

The 20G1ALF460AN2NNNNN is a large-frame industrial AC drive built for continuous-duty motor control.

Its construction is based on a power section, control section, cooling system, electrical connection area, and communication/control interfaces.

The power section handles the conversion of incoming AC power into a controlled output suitable for the motor.

The control section manages the drive’s operating commands, feedback signals, protection functions, acceleration and deceleration profiles, speed references, torque control, and communication functions.

The cooling system removes heat generated by the semiconductor power devices and associated electrical components.

For a high-power 460 A drive, thermal management is particularly important because losses increase with electrical loading.

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9. Cooling System

The drive uses a forced-air cooling arrangement.

High-power semiconductor switching devices generate heat during normal operation. The cooling system transfers this heat away from the power electronics and releases it into the surrounding installation environment.

Correct airflow is therefore essential.

The installation should provide sufficient ventilation space and should avoid placing heat-generating equipment directly above or beside the drive without appropriate thermal calculations.

The cooling-air path should remain clean and unobstructed.

In dusty industrial environments, the condition of filters, ventilation paths, fans, and heat-transfer surfaces should be included in the preventive-maintenance program.

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10. EtherNet/IP and System Integration

PowerFlex 755 drives are designed for integration into industrial automation systems and can be used in EtherNet/IP-based control architectures.

For a large industrial installation, network integration can eliminate a large amount of traditional point-to-point wiring.

The drive can receive speed references, start and stop commands, operating parameters, and control information through the automation network.

The control system can also obtain operating information from the drive.

Typical information available to a supervisory or control system can include:

• Motor speed.
• Output frequency.
• Output current.
• Drive status.
• Fault information.
• Warning information.
• Torque-related information.
• Operating condition.
• Command status.
• Reference values.

This type of integration is particularly useful in large plants where multiple variable-speed drives must be coordinated from a central control system.

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11. Product Applications

The 20G1ALF460AN2NNNNN is intended for high-power industrial applications.

It is especially suitable for equipment where motor speed must be adjusted according to process requirements.

Typical applications include:

Application	Typical Use
Pumps	Water, wastewater, process and industrial pumping
Fans	Large ventilation and process-air systems
Blowers	Industrial air movement
Conveyors	Heavy material handling
Compressors	Large industrial compression systems
Mining Equipment	Conveying and processing machinery
Cement Equipment	Fans, conveyors and process machinery
Steel Processing	Large rotating machinery
Water Treatment	Pumping and process equipment
Chemical Processing	Pumps, fans and process machinery
Pulp and Paper	Large process drives
Material Handling	Heavy-duty conveyors and machinery

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12. Pump Applications

Large pump systems are one of the most suitable application areas for high-power variable-frequency drives.

A fixed-speed motor normally operates at a constant speed even when the process requires less flow.

With variable-speed control, the motor speed can be adjusted according to the required flow or pressure.

This provides several practical benefits.

The pump can be accelerated gradually rather than starting at full speed.

This reduces mechanical shock in couplings, shafts, pipes, valves, and other connected equipment.

The drive can also help regulate process pressure or flow without relying entirely on mechanical throttling.

For large pumps, this can make the overall process easier to control.

Typical pump applications include:

• Water transfer.
• Raw-water pumping.
• Wastewater pumping.
• Cooling-water circulation.
• Process-water systems.
• Irrigation.
• Industrial water supply.
• Large circulation systems.
• Chemical process pumping.
• Mining water systems.

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13. Fan and Blower Applications

Large fans and blowers frequently operate with variable process demand.

The PowerFlex 755 platform allows motor speed to be adjusted to match the required airflow.

This can be useful in:

• Industrial ventilation.
• Furnace ventilation.
• Dust collection.
• Combustion-air systems.
• Mine ventilation.
• Cement plants.
• Steel plants.
• Large building ventilation systems.
• Process-air systems.

Reducing unnecessary motor speed can substantially reduce the mechanical power required by centrifugal fan systems.

This makes variable-speed control particularly useful when airflow demand changes during normal operation.

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14. Conveyor Applications

The 20G1ALF460AN2NNNNN can also be applied to large conveyor systems.

A conveyor drive may require controlled acceleration because starting a heavily loaded conveyor can create a significant mechanical shock.

Gradual acceleration can reduce stress on:

• Gearboxes.
• Couplings.
• Conveyor belts.
• Shafts.
• Bearings.
• Drive pulleys.
• Mechanical joints.
• Material handling structures.

The drive can also provide adjustable operating speed.

This is useful when production rate changes during different operating conditions.

Large conveyor applications can be found in mining, cement, aggregate handling, ports, bulk material handling, and manufacturing facilities.

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15. Mining Applications

Mining equipment often operates under severe loading conditions.

Large motors may drive conveyors, crushers, pumps, fans, hoists, and processing machinery.

A high-power drive can provide controlled motor acceleration and adjustable operating speed.

For conveyor systems, this can be useful when the belt is heavily loaded.

For ventilation systems, variable-speed operation can allow airflow to be adjusted according to actual requirements.

For pumping systems, speed control can be used to regulate water movement.

The final selection should always consider the actual overload profile, environmental conditions, motor characteristics, and required duty class.

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16. Cement and Aggregate Applications

Cement and aggregate plants use many large motors.

Typical equipment includes:

• Process fans.
• Exhaust fans.
• Raw-material conveyors.
• Material handling systems.
• Large pumps.
• Crushers.
• Grinding-related machinery.
• Dust collection systems.
• Cooling systems.

Large variable-frequency drives are useful when equipment speed must be adjusted to production requirements.

The drive can also provide controlled acceleration and deceleration, which can reduce mechanical stress during starting and stopping.

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17. Steel and Metal Processing Applications

Large steel and metal-processing facilities use high-power motors for many different processes.

Possible applications include:

• Cooling-water pumps.
• Process fans.
• Material conveyors.
• Large extraction systems.
• Auxiliary process equipment.
• Rolling-related auxiliary machinery.
• Ventilation systems.
• Hydraulic-related pump systems.

The ability to adjust motor speed according to the production process makes a high-power AC drive useful in these environments.

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18. Compressor Applications

Large compressors can require substantial motor power.

A variable-speed drive can adjust compressor motor speed according to process demand where the compressor and process design permit variable-speed operation.

Potential applications include:

• Industrial air compressors.
• Process-gas systems.
• Ventilation-related compression equipment.
• Refrigeration-related industrial machinery.
• Process plants.

Compressor applications require careful attention to minimum and maximum operating speeds, compressor operating maps, torque requirements, cooling, and process protection.

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19. Main Product Advantages

High Power Capability

The 460 A rating and 690 VAC voltage class allow the drive to control very large industrial motors.

The 500 kW light-duty, 450 kW normal-duty, and 375 kW heavy-duty ratings provide different application ranges depending on load characteristics.

This makes the drive suitable for large equipment where smaller drive frames would not provide sufficient current capacity.

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Adjustable Motor Speed

The drive allows motor speed to be controlled electronically rather than operating continuously at a fixed speed.

This is useful when the process load changes during operation.

Examples include variable-flow pumping, variable-airflow fans, and conveyors with different production requirements.

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Controlled Acceleration

The motor can be accelerated according to a programmed ramp.

Instead of immediately applying full-speed operation, the drive can gradually increase motor speed.

This can reduce mechanical shock and improve system starting behavior.

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Controlled Deceleration

The drive can also manage motor deceleration.

The exact deceleration performance depends on the application, load inertia, braking configuration, and programmed parameters.

For high-inertia loads, the braking system must be selected according to the actual application requirements.

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Industrial Network Integration

EtherNet/IP integration allows the drive to become part of a larger automation system.

This can simplify system-level monitoring and control.

A centralized controller can manage multiple drives while collecting operational information from each drive.

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Flexible Application Configuration

The PowerFlex 755 platform supports different control and hardware configurations.

This allows the drive to be adapted to different industrial applications rather than being limited to one specific machine type.

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High-Power Industrial Architecture

Frame 8 construction provides a platform intended for large industrial loads.

The physical size, cooling system, electrical connections, and mechanical arrangement are designed around high-power applications.

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20. Installation Considerations

The 20G1ALF460AN2NNNNN is a large high-power drive and should not be treated like a small wall-mounted VFD.

Installation planning should include:

• Input power capacity.
• Motor cable sizing.
• Protective-device coordination.
• Grounding.
• Short-circuit considerations.
• Cabinet ventilation.
• Ambient temperature.
• Airflow.
• Floor loading.
• Lifting requirements.
• Maintenance clearance.
• Cable routing.
• Communication wiring.
• Motor compatibility.
• EMC considerations.
• Heat dissipation.
• Emergency-stop architecture.
• Control-system integration.

The installation environment should be evaluated before the equipment is ordered.

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21. Maintenance

Preventive maintenance is particularly important for large-frame AC drives.

Recommended maintenance areas include:

Maintenance Item	Inspection Focus
Cooling Fans	Noise, vibration, airflow and operating condition
Air Passages	Dust accumulation and blockage
Power Connections	Connection condition and signs of overheating
Control Wiring	Loose connections and insulation condition
Grounding	Ground connection integrity
Cabinet	Cleanliness and ventilation
Communication Wiring	Network connection and physical condition
Motor Cables	Insulation and connection condition
Environment	Temperature, humidity and contamination
Fault History	Repeated faults and abnormal operating conditions

Large drives should be included in a planned maintenance schedule rather than serviced only after a failure occurs.

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22. Recommended Same-Series / Related Models

The following models are closely related 690 VAC PowerFlex 755 Frame 8 configurations.

They provide a useful comparison when selecting the appropriate current and power rating.

Model	Voltage	Current	LD Rating	ND Rating	HD Rating	Frame
20G1ALF265AN0NNNNN	690 VAC	265 A	315 kW	250 kW	200 kW	8
20G1ALF330AN0NNNNN	690 VAC	330 A	355 kW	315 kW	250 kW	8
20G1ALF370AN0NNNNN	690 VAC	370 A	400 kW	355 kW	300 kW	8
20G1ALF415AN0NNNNN	690 VAC	415 A	450 kW	400 kW	355 kW	8
20G1ALF500AN0NNNNN	690 VAC	500 A	530 kW	500 kW	400 kW	8

These models form a useful rating progression around the 460 A unit.

For applications close to the maximum capability of a 415 A drive, the 460 A model provides additional current capacity.

Where the motor or process requires still more capacity, the 500 A configuration can be considered, subject to the actual duty cycle and application requirements.

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23. Related Model Comparison

Model	Rated Current	LD Power	ND Power	HD Power	Voltage	Frame
20G1ALF265AN0NNNNN	265 A	315 kW	250 kW	200 kW	690 VAC	8
20G1ALF330AN0NNNNN	330 A	355 kW	315 kW	250 kW	690 VAC	8
20G1ALF370AN0NNNNN	370 A	400 kW	355 kW	300 kW	690 VAC	8
20G1ALF415AN0NNNNN	415 A	450 kW	400 kW	355 kW	690 VAC	8
20G1ALF460AN2NNNNN	460 A	500 kW	450 kW	375 kW	690 VAC	8
20G1ALF500AN0NNNNN	500 A	530 kW	500 kW	400 kW	690 VAC	8

The table shows the relationship between current capacity and available motor-power rating.

The 460 A model sits between the 415 A and 500 A configurations.

This makes it useful when the motor’s full-load current is above the practical range of the 415 A configuration but does not require the next larger rating.

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24. Same-Brand Reference Models

For comparison within the Allen-Bradley range, the following PowerFlex 755 models can be used as reference points.

The term “reference models” is used here because actual popularity depends on region, industry, project requirements, voltage level, and purchasing configuration.

Model	Voltage	Current / Rating	Power Range	Frame	Typical Application
20G1ANF061JN0NNNNN	690 VAC	61 A	Up to approximately 55 kW class	6	Pumps, fans, conveyors
20G1ANF082JN0NNNNN	690 VAC	82 A	Up to approximately 75 kW class	6/7 class	Industrial machinery
20G1ANF098JN0NNNNN	690 VAC	98 A	Up to approximately 90 kW class	7	Pumps, fans, process equipment
20G1ALF370AN0NNNNN	690 VAC	370 A	400 / 355 / 300 kW LD/ND/HD	8	Large pumps, fans, conveyors
20G1ALF500AN0NNNNN	690 VAC	500 A	530 / 500 / 400 kW LD/ND/HD	8	Large industrial machinery

The smaller models are useful references when a project has a lower motor-power requirement.

The 370 A and 500 A configurations are more directly comparable with the 460 A model because they are in the same high-power 690 VAC Frame 8 group.

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25. Dimensional and Weight Comparison

Model	Frame	Approx. Height	Approx. Width	Approx. Depth	Approx. Weight
20G1ALF265AN0NNNNN	8	Large-frame configuration	600 mm class	800 mm class	Configuration dependent
20G1ALF330AN0NNNNN	8	Large-frame configuration	600 mm class	800 mm class	Configuration dependent
20G1ALF370AN0NNNNN	8	Large-frame configuration	600 mm class	800 mm class	Configuration dependent
20G1ALF415AN0NNNNN	8	Large-frame configuration	600 mm class	800 mm class	Configuration dependent
20G1ALF460AN2NNNNN	8	2453 mm approx.	600 mm approx.	800 mm approx.	623 kg approx.
20G1ALF500AN0NNNNN	8	Large-frame configuration	600 mm class	800 mm class	Configuration dependent

Mechanical dimensions and weights can vary with the exact enclosure, option, power configuration, and installation arrangement.

For this reason, the 20G1ALF460AN2NNNNN dimensions and 623 kg weight should be treated as planning figures until the exact mechanical drawing and nameplate configuration are checked.

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26. Application Selection Guide

Application	Suitability	Main Reason
Large Water Pump	High	Variable flow and pressure control
Wastewater Pump	High	Adjustable speed and controlled starting
Large Fan	High	Airflow adjustment
Industrial Blower	High	Variable process demand
Heavy Conveyor	High	Controlled acceleration and speed
Mining Conveyor	High	Large motor and controlled starting
Cement Plant Fan	High	Large motor speed control
Cooling-Water Pump	High	Process flow regulation
Industrial Compressor	Application dependent	Requires compressor-specific speed range
Crusher	Application dependent	High torque and mechanical load must be evaluated
Hoist	Application dependent	Dedicated braking and safety requirements must be evaluated
High-Inertia Machine	Application dependent	Braking and deceleration requirements must be evaluated

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27. Why the 690 VAC Class Is Important

The 690 VAC class is particularly useful in high-power industrial systems.

As motor power increases, motor current becomes increasingly important for electrical distribution design.

Using a higher voltage allows a large amount of power to be transmitted at a lower current than would be required at a lower voltage.

For example, the same approximate motor power at 400 VAC requires substantially more current than at 690 VAC.

This makes 690 VAC equipment attractive for large motors where electrical distribution efficiency, conductor size, switchgear capacity, and installation space are important considerations.

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28. Heavy-Duty Application Considerations

The heavy-duty rating of this model is approximately 375 kW.

This rating is important for applications where the motor experiences higher loading or more demanding operating conditions.

Typical examples may include:

• Heavy conveyors.
• Material handling.
• Large process machinery.
• High-torque machinery.
• Equipment with frequent acceleration.
• Machinery with significant mechanical inertia.

A drive should not be selected solely from the motor’s nominal kW rating.

The motor full-load current, overload requirement, acceleration profile, operating speed range, ambient temperature, altitude, switching frequency, and mechanical load should all be considered.

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29. Control Flexibility

The PowerFlex 755 platform is designed to provide more than simple motor speed adjustment.

Depending on the configuration, it can be used for:

• Speed regulation.
• Torque control.
• Process control.
• Ramp control.
• Motor protection.
• Fault monitoring.
• Network-based command.
• Drive-status monitoring.
• Feedback-based control.

This flexibility makes the platform suitable for systems where the drive forms part of a larger automated process rather than functioning as an isolated motor controller.

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30. Process Efficiency

One of the main reasons for using a variable-frequency drive on a large motor is the ability to match motor operation to process demand.

For centrifugal pumps and fans, the relationship between speed, flow, pressure, and power means that reducing speed can have a significant effect on mechanical power consumption.

The actual energy saving depends on the machine design, operating point, duty cycle, motor efficiency, drive losses, process requirements, and control strategy.

Therefore, energy savings should be calculated from the actual operating profile rather than assumed from the drive rating.

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31. Motor Starting Benefits

Large motors can create significant electrical and mechanical stress when started directly across the line.

A variable-frequency drive can provide a controlled acceleration profile.

This allows the motor to increase speed progressively.

The result can include:

• Reduced mechanical shock.
• Reduced belt stress.
• Reduced coupling shock.
• Reduced hydraulic shock in pump systems.
• Improved starting control.
• Adjustable acceleration time.
• Better coordination with the production process.

These benefits are especially useful when the motor is connected to a large mechanical load.

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32. Large-System Integration

A major advantage of the PowerFlex 755 platform is its suitability for large automation systems.

A plant can use multiple drives across different process areas.

For example, a water-treatment facility may use large drives for:

• Raw-water pumps.
• Process pumps.
• Sludge pumps.
• Aeration equipment.
• Blowers.
• Transfer pumps.

The drives can then be integrated into a centralized control architecture.

A similar approach can be used in mining, cement, steel, chemical processing, and manufacturing plants.

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33. Engineering Selection Checklist

Before selecting the 20G1ALF460AN2NNNNN for a final project, the following items should be checked.

Engineering Item	Required Check
Motor Voltage	Confirm motor voltage is compatible
Motor Current	Confirm full-load current
Motor Power	Confirm motor kW
Duty Rating	Select LD, ND or HD based on actual load
Starting Torque	Determine required acceleration torque
Overload	Check application overload profile
Speed Range	Confirm required minimum and maximum speed
Braking	Determine whether braking hardware is required
Input Supply	Confirm 690 VAC three-phase supply
Short-Circuit Level	Confirm system protection requirements
Ambient Temperature	Confirm installation environment
Altitude	Check derating requirements
Ventilation	Provide adequate airflow
Cabinet Space	Allow adequate installation and maintenance clearance
Floor Loading	Verify support for approximately 623 kg
Motor Cable	Correctly size and route motor conductors
Grounding	Provide suitable grounding system
Network	Confirm EtherNet/IP architecture
Maintenance Access	Provide safe access to service areas
Lifting	Plan handling for large Frame 8 equipment

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34. Product Advantages Summary

Advantage	Description
High Power	Suitable for very large industrial motors
690 VAC Class	Designed for high-power industrial distribution
460 A Output	High current capability
Multiple Duty Ratings	Supports different load profiles
Variable Speed	Allows process-based motor-speed adjustment
Controlled Starting	Reduces mechanical starting shock
Network Integration	Suitable for EtherNet/IP automation systems
Industrial Construction	Designed for demanding industrial applications
Large-Frame Architecture	Suitable for high-power installations
Flexible Applications	Pumps, fans, conveyors, blowers and process equipment
Maintenance Capability	Designed for planned industrial maintenance
Process Control	Allows motor operation to follow process demand

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35. Typical Industries

The 20G1ALF460AN2NNNNN can be considered for a wide range of industrial sectors.

Water and Wastewater

Large pumps, transfer pumps, process pumps, aeration blowers, and water circulation equipment.

Mining

Large conveyors, pumps, ventilation systems, material-handling machinery, and processing equipment.

Cement

Large process fans, conveyors, pumps, dust collection equipment, and material-handling machinery.

Steel

Large fans, pumps, process equipment, cooling systems, and material-handling applications.

Chemical Processing

Process pumps, circulation systems, fans, blowers, and other variable-speed machinery.

Pulp and Paper

Large pumps, fans, blowers, conveyors, and process machinery.

General Manufacturing

Large production machinery, material handling, ventilation systems, and process equipment.

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36. Model Identification Summary

The catalog number can be viewed as a structured identification code representing the PowerFlex 755 product family, input arrangement, voltage class, current rating, enclosure/configuration information, and option positions.

For the requested model:

20G1ALF460AN2NNNNN

the key selection characteristics are:

• 20G — PowerFlex 755 family.
• 1 — AC input family.
• F — 690 VAC class.
• 460 — 460 A rating.
• A/N/option positions — configuration-specific selections.
• NNNNN — additional option positions.

Because the option characters can affect the physical and electrical configuration, the complete nameplate/catalog configuration should be used when ordering replacement equipment.

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37. Final Technical Summary

Specification	Value
Model	20G1ALF460AN2NNNNN
Brand	Allen-Bradley
Series	PowerFlex 755
Product	AC Variable Frequency Drive
Voltage	690 VAC
Phase	3 Phase
Current	460 A
Light Duty	500 kW
Normal Duty	450 kW
Heavy Duty	375 kW
Frame	8
Cooling	Forced Air
Enclosure Class	IP20 / Type 1 class
Installation Style	MCC-style / floor-mounted high-power installation
Communication	EtherNet/IP capable
Approx. Height	2453 mm
Approx. Width	600 mm
Approx. Depth	800 mm
Approx. Weight	623 kg
Main Applications	Pumps, fans, blowers, conveyors, compressors, process machinery
Main Benefit	High-power variable-speed control for large industrial motors

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38. Overall Product Description

The Allen-Bradley 20G1ALF460AN2NNNNN PowerFlex 755 is a high-power 690 VAC variable-frequency drive intended for large three-phase industrial motors.

With a 460 A rating, the drive provides a substantial power-control capability, with approximately 500 kW light-duty, 450 kW normal-duty, and 375 kW heavy-duty application ratings.

Its Frame 8 construction places it in the large-drive category, making it appropriate for major industrial equipment rather than small machinery.

The combination of high voltage, high current capacity, variable-speed control, forced-air cooling, industrial construction, and network integration makes this drive suitable for large pumps, fans, blowers, conveyors, process equipment, water systems, mining machinery, cement equipment, and other high-power applications.

The approximate physical dimensions of 2453 mm × 600 mm × 800 mm and an approximate weight of 623 kg should be considered during equipment-room planning, cabinet arrangement, transportation, lifting, floor loading, and maintenance-access design.

For final engineering, the exact nameplate configuration and mechanical drawing should be used to verify all option-dependent details, particularly enclosure configuration, braking arrangement, filtering, operator-interface configuration, electrical terminals, and exact mounting dimensions.

The most important selection point is not simply the 460 A rating. The actual motor current, motor voltage, duty cycle, overload requirement, acceleration profile, operating speed range, ambient conditions, and braking requirements should all be evaluated before final drive selection.

For a large industrial installation, proper drive sizing and installation planning can provide stable motor control, smoother starting and stopping, better process regulation, and a practical way to integrate large motors into a modern industrial automation system.