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1. Product Overview

The 20G1F3C460LNDNNNNN is a high-power PowerFlex 755 AC Drive designed for demanding industrial motor-control applications.

It is an air-cooled 755 AC packaged drive configuration and belongs to the large-drive segment of the PowerFlex 755 family. Catalog listings specifically identify 20G1F3C460LNDNNNNN as an Air Cooled 755 AC Drive / PowerFlex 755 AC Drive.

The 460 in the catalog number represents the drive’s approximate current class, making this a substantially larger drive than compact variable-frequency-drive products.

The model is intended for large industrial motors and machinery where high current capacity, controlled acceleration and deceleration, advanced motor control, feedback capability, industrial communication, and flexible system integration are important.

Typical applications include large conveyors, pumps, fans, compressors, cranes, hoists, extruders, material-handling equipment, process machinery, and other large motor-driven systems.

The model is particularly suitable when a machine requires considerably more capability than a small or medium-size general-purpose VFD can provide.

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2. Product Identification

Item	Specification
Model	20G1F3C460LNDNNNNN
Brand	Allen-Bradley
Product Family	PowerFlex
Product Series	PowerFlex 755
Product Type	AC Variable Frequency Drive
Package Type	Air-Cooled 755 AC Packaged Drive
Current Class	460 A
Voltage Class	400 V AC class
Input	Three-phase AC
Output	Variable-frequency three-phase AC
Cooling	Air cooled
Application Level	High-power industrial
Motor Control	Advanced AC motor control
Feedback	Available with appropriate options
Communication	Available through configured options
Installation	Industrial cabinet / equipment installation
Main Use	Large industrial motor control
Approx. Dimensions	Large-frame configuration
Approx. Weight	Approximately 150 kg class

The exact physical configuration can vary depending on the complete drive arrangement and installed options, so mechanical dimensions should be confirmed against the applicable mechanical drawing before final cabinet fabrication.

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3. Detailed Electrical Parameters

Parameter	Specification
Model	20G1F3C460LNDNNNNN
Series	PowerFlex 755
Drive Type	AC Drive
Input Voltage Class	400 V AC
Input Phase	Three phase
Nominal Current Class	460 A
Output	Three-phase variable-frequency AC
Cooling	Air cooled
Drive Architecture	PowerFlex 755
Motor Control	Advanced AC variable-frequency control
Speed Control	Supported
Torque Control	Supported depending on configuration
Feedback	Encoder/feedback options available
Communication	Industrial communication options
Regenerative Applications	Supported by appropriate configuration
Braking	Configuration dependent
Mounting	Industrial installation
Application	Large industrial motors
Duty	Continuous industrial applications, subject to rating and environment

The exact catalog number is identified in product catalogs as an Air Cooled 755 AC Packaged Drive.

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4. Voltage and Current Class

The 20G1F3C460LNDNNNNN belongs to the 400 V-class PowerFlex 755 configurations.

Its 460 A current class makes it suitable for large industrial motors.

When selecting a drive of this size, the motor’s nameplate current is more important than horsepower alone.

The actual selection should consider motor rated current, overload requirement, acceleration time, load inertia, duty cycle, ambient temperature, altitude, motor type, and regenerative conditions.

A motor with a high horsepower rating does not automatically require the same drive configuration in every application.

The machine’s actual operating conditions determine the appropriate drive rating.

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5. Product Series — PowerFlex 755

The PowerFlex 755 is a high-performance industrial AC-drive platform designed for larger machinery and demanding motor-control applications.

The series includes many different current ratings and configurations.

Examples include approximately 302 A, 367 A, 460 A, 540 A, 585 A, 650 A, 750 A, 770 A, and 920 A configurations, together with substantially higher-current models.

This broad range allows engineers to use the same general drive platform across different machine sizes.

For example, a plant may use one PowerFlex 755 configuration for a large pump, another for a conveyor, and another for a much larger process motor.

This can make engineering, commissioning, maintenance, and spare-parts management more consistent.

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6. Product Introduction

The PowerFlex 755 is designed to do considerably more than simply change the frequency supplied to a motor.

In an industrial installation, the drive can act as an important part of the complete machine-control system.

The drive receives electrical power from the incoming supply and provides a controlled output to the motor.

The output frequency can be varied according to the required motor speed.

The drive can also control acceleration and deceleration.

This means a large motor does not have to start at full speed immediately.

Instead, the motor can accelerate according to a programmed ramp.

This can reduce mechanical shock and help protect components such as:

• Gearboxes
• Couplings
• Shafts
• Bearings
• Conveyor belts
• Pumps
• Fans
• Mechanical brakes

The same principle applies during deceleration.

A controlled stop can reduce unnecessary stress on the machine and provide more predictable operating behavior.

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7. Advanced Motor Control

The PowerFlex 755 platform is designed for applications requiring more sophisticated motor control than a basic VFD.

Depending on the installed configuration, the drive can be used for:

• Speed control
• Torque control
• Vector-based control
• Feedback-based control
• Controlled acceleration
• Controlled deceleration
• Forward/reverse operation
• Process-speed regulation
• Coordinated machine control

These functions are useful for machinery where motor speed and torque have a direct effect on production quality or machine safety.

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8. Feedback Capability

Large machines sometimes require motor feedback.

An encoder can provide information about motor speed or position.

This can improve control at low speed and can be useful for applications requiring more accurate speed regulation.

Typical applications where feedback may be valuable include:

• Cranes
• Hoists
• Extruders
• Test stands
• Large conveyors
• Winding machinery
• High-inertia machines

The exact feedback hardware should be selected according to the motor and application.

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9. Regenerative Operation

Regenerative operation is particularly relevant to large industrial machinery.

When a motor decelerates, the motor can temporarily operate as a generator.

Energy can then flow back toward the drive’s DC bus.

In a conventional drive system, this energy may need to be dissipated through a braking system.

In a suitable regenerative configuration, the energy can instead be returned toward the electrical supply.

This can be useful for machinery that frequently brakes.

Typical examples include:

• Cranes
• Hoists
• Large conveyors
• Centrifuges
• Test stands
• High-inertia rotating machinery

The exact regenerative arrangement must be confirmed from the complete drive configuration rather than inferred from the basic catalog number alone.

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10. Main Product Advantages

10.1 High Current Capacity

The most obvious characteristic of the 20G1F3C460LNDNNNNN is its 460 A current class.

This places it in the high-power industrial-drive category.

It is intended for motors that are considerably larger than those normally controlled by compact machine drives.

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10.2 Suitable for Heavy Industrial Loads

The drive is appropriate for machines where the motor may experience substantial load changes.

Examples include conveyors, compressors, pumps, process equipment, cranes, and material-handling machinery.

The drive can provide controlled acceleration and deceleration rather than simply connecting the motor directly to the electrical supply.

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10.3 Flexible Control

The PowerFlex 755 architecture provides a broad range of control functions.

The same general drive platform can be used for applications ranging from straightforward variable-speed operation to more sophisticated feedback-based motor control.

This flexibility makes the product suitable for different types of industrial machinery.

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10.4 Industrial Communication

The drive can be integrated into an industrial automation system using appropriate communication hardware.

This allows a PLC or other controller to exchange information with the drive.

Typical information can include:

• Start/stop commands
• Speed reference
• Torque reference
• Drive status
• Motor speed
• Fault information
• Alarm information
• Operating parameters
• Diagnostic information

This makes the drive suitable for centralized machine control.

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10.5 Feedback Integration

The ability to use feedback devices makes the PowerFlex 755 platform suitable for applications requiring improved motor control.

This is especially useful when the machine must maintain stable speed at low operating speeds.

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10.6 Large Family of Compatible Configurations

The PowerFlex 755 family includes many current ratings and configurations.

The product catalog includes related models such as 20G1F3C367LNDNNNNN, 20G1F3C460LNDNNNNN, 20G1F3C540LNDNNNNN, 20G1F3C585LNDNNNNN, 20G1F3C650LNDNNNNN, and larger configurations.

This makes it practical to standardize a plant around the same general drive family.

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11. Dimensions and Weight

The 20G1F3C460LNDNNNNN is a large industrial drive.

It should not be compared mechanically with compact PowerFlex drives.

For preliminary engineering purposes, the drive can be treated as a large-frame, approximately 150 kg-class unit.

Mechanical Parameter	Approximate Specification
Model	20G1F3C460LNDNNNNN
Height	Approximately 1,200 mm
Width	Approximately 600 mm
Depth	Approximately 400 mm
Weight	Approximately 150 kg
Cooling	Air cooled
Mounting	Industrial / floor-mounted system
Frame	Large-frame configuration
Ventilation	Required
Service Clearance	Required
Transportation	Mechanical lifting may be required

The dimensions above should be treated as practical reference values.

For final cabinet design, use the mechanical drawing corresponding to the complete catalog configuration.

This is particularly important because options, enclosure arrangements, cable-entry requirements, and associated components can affect the final installation footprint.

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12. Installation Requirements

A 460 A industrial drive requires careful electrical and mechanical planning.

The installation should provide adequate ventilation.

Because the drive is air cooled, airflow around the equipment is important.

The cabinet or electrical room should not be allowed to accumulate excessive dust or other contaminants that could restrict airflow.

Power cables should be correctly sized.

Motor cables should be selected according to motor current, installation conditions, cable length, and applicable electrical requirements.

Grounding must also be properly designed.

Control and communication cables should be routed appropriately to reduce the possibility of electrical interference.

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13. Typical Applications

13.1 Large Conveyor Systems

Large conveyors often require high motor torque.

A conveyor carrying heavy material can experience significant load during startup.

The PowerFlex 755 can accelerate the motor progressively, reducing sudden mechanical stress.

This is useful for:

• Mining conveyors
• Bulk-material conveyors
• Production conveyors
• Warehouse systems
• Heavy manufacturing equipment

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14. Crane Applications

Cranes are one of the more demanding applications for large AC drives.

The motor must accelerate and decelerate repeatedly.

When a load is lowered, the motor can enter regenerative operation.

A suitable PowerFlex 755 configuration can manage speed and torque while working with the machine’s braking and feedback systems.

For cranes, the exact drive configuration should be selected together with the motor, brake system, feedback device, and safety architecture.

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15. Hoist Applications

Large hoists require controlled acceleration, controlled stopping, and predictable low-speed behavior.

Encoder feedback can be useful where accurate speed control is required.

The 460 A current class provides substantial capacity for large lifting systems.

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16. Pump Applications

Large industrial pumps can require substantial motor power.

A variable-frequency drive allows the pump to operate at a speed appropriate to the process rather than always running at full speed.

This can provide better process control.

Applications include:

• Water treatment
• Industrial circulation
• Cooling systems
• Process pumps
• Large fluid-transfer systems

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17. Fan and Blower Applications

Large industrial fans and blowers can have significant inertia.

A controlled acceleration profile can reduce mechanical stress during startup.

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

Typical applications include industrial ventilation, process exhaust, combustion air, and large cooling systems.

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18. Compressor Applications

Large compressors can require controlled acceleration and high motor current.

The PowerFlex 755 can be integrated into a compressor control system to regulate motor speed according to process requirements.

The final drive selection should consider the compressor’s starting torque, load characteristics, operating cycle, and motor nameplate current.

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19. Extruders and Process Equipment

Extrusion equipment can require stable motor speed and torque.

Changes in motor speed can affect production quality.

A high-performance AC drive can provide the required motor control and integrate with the wider production-control system.

The PowerFlex 755 is suitable for large extrusion and process equipment when correctly sized.

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20. Material-Handling Equipment

Large material-handling machines often use multiple motors.

The PowerFlex 755 can be integrated into coordinated systems where each drive needs to communicate with the central control system.

This can be useful for:

• Transfer systems
• Large conveyors
• Hoists
• Bulk handling
• Production material transport

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21. Test Equipment

Large motor test stands can have repeated acceleration and deceleration cycles.

This creates a strong case for advanced drive control and regenerative operation.

The PowerFlex 755 can be used as part of a test system where motor speed and torque are controlled according to the test procedure.

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22. Five Recommended Models from the Same PowerFlex 755 Series

The following models are closely related PowerFlex 755 configurations.

They are useful when comparing nearby current classes and different machine requirements.

Model	Series	Current Class	Voltage Class	Typical Application	Approx. Dimensions	Approx. Weight
20G1F3C367LNDNNNNN	PowerFlex 755	367 A	400 V class	Large industrial motors	Large-frame	Approx. 120–140 kg
20G1F3C460LNDNNNNN	PowerFlex 755	460 A	400 V class	Heavy industrial machinery	Approx. 1,200 × 600 × 400 mm	Approx. 150 kg
20G1F3C540LNDNNNNN	PowerFlex 755	540 A	400 V class	Large process equipment	Large-frame	Approx. 150–180 kg
20G1F3C585LNDNNNNN	PowerFlex 755	585 A	400 V class	High-power industrial systems	Large-frame	Approx. 160–190 kg
20G1F3C650LNDNNNNN	PowerFlex 755	650 A	400 V class	Very large motor systems	Large-frame	Approx. 180–220 kg

These model numbers are represented in PowerFlex 755 catalog listings.

The related-model dimensions and weights are approximate comparison values rather than guaranteed mechanical specifications for every individual configuration.

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23. Related Model — 20G1F3C367LNDNNNNN

The 20G1F3C367LNDNNNNN is a lower-current configuration in the same PowerFlex 755 family.

It is useful for applications where the required motor current is below the 460 A class.

Parameter	Specification
Model	20G1F3C367LNDNNNNN
Series	PowerFlex 755
Current Class	367 A
Voltage Class	400 V class
Cooling	Air cooled
Product Type	AC Drive
Application	Large industrial motor control
Feedback	Configuration dependent
Communication	Configuration dependent
Approx. Dimensions	Large-frame
Approx. Weight	Approx. 120–140 kg

This model is one of the closest current-class comparisons to the 460 A version.

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24. Related Model — 20G1F3C540LNDNNNNN

The 20G1F3C540LNDNNNNN provides higher current capacity than the 460 A configuration.

Parameter	Specification
Model	20G1F3C540LNDNNNNN
Series	PowerFlex 755
Current Class	540 A
Voltage Class	400 V class
Cooling	Air cooled
Product Type	AC Drive
Application	Large industrial machinery
Motor Control	Advanced AC control
Feedback	Configuration dependent
Approx. Dimensions	Large-frame
Approx. Weight	Approx. 150–180 kg

The 540 A configuration is represented in PowerFlex 755 product listings.

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25. Related Model — 20G1F3C585LNDNNNNN

The 20G1F3C585LNDNNNNN is another high-current PowerFlex 755 configuration.

Parameter	Specification
Model	20G1F3C585LNDNNNNN
Series	PowerFlex 755
Current Class	585 A
Voltage Class	400 V class
Cooling	Air cooled
Application	Large industrial motor systems
Motor Control	Advanced AC control
Feedback	Configuration dependent
Communication	Configuration dependent
Approx. Dimensions	Large-frame
Approx. Weight	Approx. 160–190 kg

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26. Related Model — 20G1F3C650LNDNNNNN

The 20G1F3C650LNDNNNNN provides a higher current class for very large motor applications.

Parameter	Specification
Model	20G1F3C650LNDNNNNN
Series	PowerFlex 755
Current Class	650 A
Voltage Class	400 V class
Cooling	Air cooled
Application	Very large industrial equipment
Control	Advanced AC motor control
Feedback	Configuration dependent
Communication	Configuration dependent
Approx. Dimensions	Large-frame
Approx. Weight	Approx. 180–220 kg

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27. Related Model — 20G1F3C460LNANNNNN

Another closely related configuration is 20G1F3C460LNANNNNN.

It has the same basic 460 A current class but a different catalog configuration.

This is important because two PowerFlex 755 models with the same current class should not automatically be treated as mechanically or electrically identical.

Parameter	Specification
Model	20G1F3C460LNANNNNN
Series	PowerFlex 755
Current Class	460 A
Voltage Class	400 V class
Cooling	Air cooled
Product Type	AC Drive
Application	Large industrial motors
Configuration	Different catalog configuration from LNDNNNNN
Approx. Dimensions	Configuration dependent
Approx. Weight	Configuration dependent

The product listings distinguish 20G1F3C460LNANNNNN and 20G1F3C460LNDNNNNN as separate PowerFlex 755 catalog configurations.

This distinction is important when ordering a replacement.

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28. Five Popular Models from the Same Brand

The following products cover different parts of the industrial drive and motion-control portfolio.

They are comparison products rather than direct replacements.

Model	Product Family	Product Type	Typical Application	Voltage Class	Approx. Dimensions	Approx. Weight
25B-D010N114	PowerFlex 525	Compact AC Drive	Small machines, pumps, fans	480 V class	Approx. 200 × 100 × 150 mm	Approx. 2–5 kg
25C-D010N114	PowerFlex 527	Compact AC Drive	Machine automation	480 V class	Approx. 200 × 100 × 150 mm	Approx. 2–5 kg
20F1AND302JN0NNNNN	PowerFlex 753	Industrial AC Drive	Large motors and machinery	480 V class	Large-frame	Approx. 80–100 kg
20G1ANC302JA0NNNNN	PowerFlex 755	Industrial AC Drive	Large industrial motors	400 V class	Approx. 881.5 × 430 × 349.6 mm	Approx. 82 kg
2094 Series	Kinetix	Servo / Motion Drive	Motion-control applications	Application dependent	Modular	Application dependent

The five products above represent very different power ranges and application areas.

The 20G1F3C460LNDNNNNN is substantially larger than the compact PowerFlex products and belongs to the high-power industrial segment.

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29. Comparison with Compact AC Drives

Compact drives such as the PowerFlex 525 and PowerFlex 527 are intended for smaller machines.

They are useful where cabinet space is limited and motor power requirements are relatively low.

The 20G1F3C460LNDNNNNN is designed for a completely different scale of equipment.

Feature	Compact PowerFlex Drive	20G1F3C460LNDNNNNN
Application	Small/medium machinery	Large industrial machinery
Current	Low/medium	460 A
Physical Size	Compact	Large
Weight	Few kilograms	Approx. 150 kg
Mounting	Cabinet	Large industrial installation
Motor Size	Small/medium	Large
Feedback	More limited	Extensive configuration capability
Regeneration	Application dependent	Advanced configurations available
Communication	Available	Extensive options
Service Requirements	Relatively simple	Specialized industrial maintenance

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30. Comparison with PowerFlex 753

The PowerFlex 753 is a much closer comparison because it is also intended for industrial motor control.

However, the PowerFlex 755 platform is particularly useful for applications where advanced configuration, feedback, communications, and regenerative operation are important.

Feature	PowerFlex 753	PowerFlex 755
Application	Industrial motor control	Advanced industrial motor control
Large Motors	Yes	Yes
Feedback	Available	Extensive configuration capability
Communication	Available	Extensive options
Regenerative Applications	Configuration dependent	Broad configuration capability
High-Inertia Loads	Suitable	Suitable
Process Equipment	Suitable	Suitable
System Integration	High	High
Configuration Flexibility	High	Very high

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31. Why the 460 A Configuration Is Useful

The 460 A version occupies an important position within the PowerFlex 755 family.

It provides substantially more current capacity than the 367 A configuration while remaining below the larger 540 A, 585 A, and 650 A configurations.

This can be useful when a machine’s motor current falls between the smaller and larger drive classes.

Selecting a drive with an appropriate current margin can also provide engineering flexibility, although the exact sizing must always follow the motor and application requirements.

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32. Maintenance Requirements

Air-cooled high-power drives require attention to the cooling system.

Fans should be inspected during scheduled maintenance.

Ventilation paths should remain clear.

Dust accumulation should be controlled.

Electrical connections should be inspected according to the maintenance procedure.

The surrounding electrical room or cabinet should also remain within the specified environmental conditions.

Maintenance personnel should be aware that the internal DC bus can remain energized after the incoming AC supply has been disconnected.

Proper electrical isolation and verification are essential before service work.

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33. Replacement and Selection Considerations

When replacing a 20G1F3C460LNDNNNNN, the replacement should not be selected based only on the 460 A rating.

The following parameters should be compared:

Selection Item	What Should Be Checked
Input Voltage	Must match the electrical system
Motor Voltage	Must match motor requirements
Motor Current	Compare with actual nameplate current
Overload	Check normal-duty/heavy-duty requirements
Duty Cycle	Continuous, intermittent, high-inertia, etc.
Regeneration	Determine whether regenerative operation is required
Feedback	Check encoder/feedback hardware
Communication	Match PLC/network requirements
Cooling	Air cooled or other arrangement
Enclosure	Match installation environment
Frame	Confirm mechanical compatibility
Dimensions	Confirm cabinet and floor space
Weight	Confirm transportation and mounting requirements
Cable Entry	Confirm power/control connection arrangement
Options	Match installed machine functions

This is particularly important because PowerFlex 755 catalogs contain multiple configurations with very similar current ratings.

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34. Practical Industrial Advantages

The 20G1F3C460LNDNNN is well suited to facilities where large motors must be integrated into an automated production system.

Its high current capability allows it to control substantial motor loads.

Its PowerFlex 755 architecture provides a wide range of control and communication options.

Its compatibility with feedback systems allows more sophisticated speed and torque control.

Its regenerative configurations can be useful for high-inertia machinery.

Its position within a large product family also makes it practical for plant-wide drive standardization.

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35. Summary Specification Table

Category	Specification
Model	20G1F3C460LNDNNNNN
Brand	Allen-Bradley
Series	PowerFlex 755
Product Type	High-Power AC Drive
Package	Air-Cooled 755 AC Packaged Drive
Current Class	460 A
Voltage Class	400 V AC
Input	Three-phase AC
Output	Three-phase variable-frequency AC
Cooling	Air cooled
Motor Control	Advanced AC motor control
Feedback	Supported with appropriate options
Communication	Industrial network options
Regenerative Applications	Supported by appropriate configuration
Main Applications	Conveyors, cranes, hoists, pumps, fans, compressors, extruders, process equipment
Approx. Height	1,200 mm
Approx. Width	600 mm
Approx. Depth	400 mm
Approx. Weight	150 kg
Installation	Large industrial installation
Application Class	High-power industrial
Maintenance	Professional industrial maintenance

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36. Final Product Description

The Allen-Bradley 20G1F3C460LNDNNN is a high-power PowerFlex 755 AC Drive designed for large industrial motor-control applications.

Its 460 A current class places it firmly in the large-drive category.

The product is designed for applications where high motor current, controlled acceleration and deceleration, advanced motor control, industrial communication, feedback, and flexible system integration are important.

The drive’s air-cooled architecture makes it suitable for conventional industrial electrical installations where appropriate ventilation can be provided.

Its large physical size and approximately 150 kg weight mean that installation should be treated as a complete engineering task rather than a simple panel-mount operation.

The electrical room or cabinet needs adequate floor space, ventilation, service clearance, cable routing, and mechanical support.

The PowerFlex 755 family also provides a broad range of related current ratings.

The nearby 367 A, 540 A, 585 A, and 650 A configurations provide useful alternatives when the motor’s actual current requirement differs from 460 A.

This makes the family useful for standardizing large motor-control equipment throughout an industrial plant.

The drive is especially suitable for large conveyors, cranes, hoists, pumps, fans, compressors, extruders, material-handling systems, test stands, and process machinery.

For equipment with high inertia or frequent braking, a suitable regenerative configuration can provide an effective method of handling energy returned by the motor during deceleration.

For automated production equipment, the ability to integrate the drive with PLCs, feedback devices, and industrial communication networks can also be important.

When replacing an existing drive, the complete catalog number should always be matched.

The LNDNNNNN configuration should not be treated as interchangeable with another 460 A PowerFlex 755 simply because the current rating is identical.

Voltage, input arrangement, enclosure, frame, cooling, feedback, communication options, regenerative requirements, mechanical dimensions, and installed accessories all need to be checked.

For preliminary mechanical planning, approximately 1,200 mm high × 600 mm wide × 400 mm deep and approximately 150 kg can be used as reference values for this large-frame configuration.

For final installation, cabinet design, transportation, or replacement work, the exact mechanical documentation for the complete configuration should be used.

Overall, the 20G1F3C460LNDNNNNN is a large industrial PowerFlex 755 drive intended for demanding applications where a high-current, flexible, integrated motor-control solution is required.

Its combination of 460 A current capacity, 400 V-class operation, air cooling, advanced motor control, feedback capability, industrial communication, and regenerative application support makes it a suitable platform for large-scale industrial machinery.