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Allen-Bradley 20G11TF460JN0NNNNN PowerFlex 755 AC Drive

Product Introduction, Technical Parameters, Applications, Advantages and Related Model Recommendations

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1. Product Overview

The 20G11TF460JN0NNNNN is a high-power air-cooled AC drive belonging to the PowerFlex 755 series.

It is designed for large three-phase industrial motors and is particularly suitable for applications where high motor power, adjustable speed, controlled acceleration and deceleration, reliable torque control, and integration with an industrial automation system are required.

The model is rated for a 690 V AC three-phase system and has a 460 A class output rating. Depending on the selected duty classification, it can be applied to motors in the several-hundred-kilowatt range.

For typical industrial selection, its principal motor ratings are approximately 500 kW for Light Duty, 450 kW for Normal Duty, and 375 kW for Heavy Duty.

The unit uses a large Frame 8 construction and forced-air cooling. It is intended for installation as part of an industrial electrical cabinet or drive system rather than as a compact wall-mounted inverter.

The catalog configuration represented by 20G11TF460JN0NNNNN includes filtered operation, an installed common-mode capacitor jumper, AC input with precharge, DC terminals, embedded EtherNet/IP capability, and no local HIM in the basic configuration.

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2. Basic Product Information

Item	Specification
Brand	Allen-Bradley
Product Family	PowerFlex
Product Series	PowerFlex 755
Product Type	High-Power AC Variable Frequency Drive
Model	20G11TF460JN0NNNNN
Drive Construction	Air-Cooled
Input Type	AC Input with Precharge
Input Phase	Three Phase
Voltage Class	690 V AC
Output Current Class	460 A
Light-Duty Rating	Approx. 500 kW
Normal-Duty Rating	Approx. 450 kW
Heavy-Duty Rating	Approx. 375 kW
Frame	Frame 8
Enclosure Configuration	Open Type
Cooling Method	Forced Air
Filtering	Filtered
Common-Mode Capacitor Jumper	Installed
Communication	Embedded EtherNet/IP
Local HIM	None / No HIM
DC Terminals	Yes
Installation	Floor-mounted / Cabinet Integration
Approx. Height	2145 mm
Approx. Width	778 mm
Approx. Depth	425 mm
Approx. Weight	286 kg
Main Application	Large industrial AC motors

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3. Product Series

The product belongs to the PowerFlex 755 series.

The PowerFlex 755 series is positioned for demanding industrial motor-control applications where a combination of high power, flexible control, automation communication, and application-specific configuration is required.

Compared with smaller drive families, the PowerFlex 755 platform is intended for substantially larger motors and more complex industrial systems.

The 20G11TF460JN0NNNNN is one of the large-frame versions designed around a 690 V AC three-phase power system.

Its 460 A class places it toward the upper end of the large-drive range, making it suitable for motors and machines that require hundreds of kilowatts of power.

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4. Detailed Technical Parameters

Parameter	20G11TF460JN0NNNNN
Catalog Number	20G11TF460JN0NNNNN
Brand	Allen-Bradley
Series	PowerFlex 755
Drive Type	AC Variable Frequency Drive
Input Voltage	690 V AC class
Input Phase	3 Phase
Input Frequency	50/60 Hz system dependent
Maximum Current Class	460 A
Light-Duty Current	500 kW class
Normal-Duty Current	450 kW class
Heavy-Duty Current	375 kW class
Light-Duty Power	Approx. 500 kW
Normal-Duty Power	Approx. 450 kW
Heavy-Duty Power	Approx. 375 kW
Input Configuration	AC Input with Precharge
DC Terminals	Included
Cooling	Forced Air
Frame Size	Frame 8
Enclosure	Open Type
Filtering	Filtered
CM Capacitor Jumper	Installed
Network	Embedded EtherNet/IP
HIM	None
Installation	Floor / Cabinet Installation
Height	Approx. 2145 mm
Width	Approx. 778 mm
Depth	Approx. 425 mm
Weight	Approx. 286 kg
Motor Application	Large Three-Phase AC Motors
Typical Industrial Level	High-Power

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5. Motor Duty Ratings

One of the most important specifications of this drive is the distinction between Light Duty, Normal Duty and Heavy Duty.

These three ratings should not be regarded simply as three different horsepower numbers.

They represent different load requirements and permissible current levels.

Duty Classification	Approx. Output Current	Approx. Motor Power
Light Duty	500 A class	500 kW
Normal Duty	460 A class	450 kW
Heavy Duty	375 A class	375 kW

For a relatively smooth variable-torque load such as a large fan or pump, the Light-Duty rating may be the most relevant rating.

For general industrial machinery, the Normal-Duty rating may be more appropriate.

For applications involving high starting torque, significant overload, repeated acceleration, heavy material, shock loading, or demanding mechanical conditions, the Heavy-Duty rating should receive particular attention.

The actual selection should always be based on the motor nameplate current and the complete load profile rather than horsepower alone.

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6. Dimensions and Weight

The 20G11TF460JN0NNNNN is a large industrial drive and requires substantially more installation space than compact VFD products.

Mechanical Parameter	Approximate Value
Height	2145 mm
Width	778 mm
Depth	425 mm
Weight	286 kg
Frame	Frame 8
Cooling	Forced Air
Mounting	Floor / Cabinet
Construction	Open Type

The approximately 286 kg value should be considered the approximate weight of the drive assembly.

It should not automatically be interpreted as the final shipping weight or the weight of a complete cabinet.

A complete installation can include the drive, cabinet structure, incoming protection, disconnect equipment, bus components, control equipment, ventilation equipment, wiring, terminals and other accessories.

Consequently, the complete system can weigh considerably more than the basic drive itself.

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7. Product Dimensions and Installation Considerations

Because the drive is approximately 2145 mm high, installation should be planned around the actual cabinet and equipment-room layout.

Adequate space should be provided for:

• Power cable installation
• Control cable installation
• Airflow
• Maintenance
• Fan inspection
• Electrical inspection
• Component replacement
• Troubleshooting
• Safe isolation
• Heat dissipation

The approximately 778 mm width and 425 mm depth should also be considered when designing the cabinet arrangement.

The approximate 286 kg weight requires suitable floor support and lifting equipment.

For large-frame equipment, transportation into the electrical room can be just as important as the final installation itself.

Door width, elevator capacity, lifting access, floor loading, cabinet positioning and maintenance clearance should therefore be considered before installation.

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8. Product Construction

The 20G11TF460JN0NNNNN is based on a variable-frequency AC drive architecture.

The basic electrical energy path can be simplified as:

Three-Phase AC Input

↓

Input / Precharge Section

↓

DC Bus

↓

Power Inverter Section

↓

Variable-Frequency AC Output

↓

Three-Phase Motor

↓

Industrial Mechanical Load

The drive controls the output voltage and frequency according to the motor-control requirements.

This makes it possible to control motor speed rather than simply connecting the motor directly to a fixed-frequency power supply.

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9. Product Introduction

The primary purpose of the 20G11TF460JN0NNNNN is to provide controlled electrical power to a large industrial AC motor.

A traditional starter generally focuses on switching the motor between stopped and running states.

A high-power variable-frequency drive provides considerably more control.

The motor can be:

• Started gradually
• Accelerated according to a programmed ramp
• Operated at different speeds
• Adjusted according to process demand
• Decelerated under controlled conditions
• Monitored through the automation system
• Protected through drive control functions
• Integrated into an automated production sequence

This makes the product suitable for continuous industrial processes where motor speed directly affects production efficiency, flow, pressure, material handling or machine performance.

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10. Main Product Advantages

10.1 High-Power Motor Control

The biggest advantage of the 20G11TF460JN0NNNNN is its ability to control very large motors.

With a 460 A class output and a 690 V system rating, the drive is intended for applications that are far beyond the normal range of compact machine drives.

This makes it suitable for large pumps, fans, conveyors, compressors, crushers, mills and other heavy industrial equipment.

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10.2 690 V Industrial System Compatibility

The 690 V class is well suited to high-power industrial motor systems.

Large motors require substantial electrical power.

Using a higher-voltage motor system can reduce the current required for a given power level compared with a lower-voltage system.

This makes 690 V systems particularly useful for large motors and industrial installations where power levels reach several hundred kilowatts.

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10.3 Adjustable Speed

A major advantage of a variable-frequency drive is the ability to change motor speed according to process requirements.

Instead of operating continuously at one fixed speed, the motor can run at a selected speed.

For example:

Process Condition	Example Speed Command
Low Demand	40–50%
Reduced Production	60%
Normal Production	75–85%
High Demand	90%
Maximum Requirement	100%

The actual operating speed depends on the motor, load, process and control strategy.

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10.4 Controlled Acceleration

Large motors can produce considerable mechanical stress when started directly.

The drive can provide a controlled acceleration profile.

A simplified example is:

0% → 20% → 40% → 60% → 80% → 100%

rather than an abrupt transition from zero speed to full speed.

This can reduce mechanical shock on:

• Shafts
• Couplings
• Gearboxes
• Belts
• Conveyor systems
• Pumps
• Fans
• Mechanical transmission components

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10.5 Controlled Deceleration

The drive can also control the motor during stopping.

This is useful when the driven equipment has high rotational inertia.

Large fans, conveyors, pumps and processing machinery can continue rotating for a considerable period after the power command is removed.

Controlled deceleration allows the stopping behavior to be managed more effectively.

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10.6 High-Torque Applications

The PowerFlex 755 platform can be used for demanding motor applications where torque requirements are more important than simple speed regulation.

Examples include:

• Loaded conveyors
• Crushers
• Mills
• Mixers
• Heavy material-handling equipment
• Processing machinery

The Heavy-Duty rating must be considered carefully for these applications.

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10.7 Automation Integration

The 20G11TF460JN0NNNNN incorporates embedded EtherNet/IP capability.

This makes it suitable for integration into an industrial control system.

A typical control arrangement is:

PLC

↓

Industrial Network

↓

PowerFlex 755 Drive

↓

690 V AC Motor

↓

Pump / Fan / Conveyor / Process Equipment

The drive can therefore operate as part of a larger automation system instead of functioning as an independent motor controller.

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11. Application — Large Pumps

Large pumps are one of the most common applications for high-power variable-frequency drives.

Potential applications include:

• Water treatment
• Industrial water circulation
• Cooling-water systems
• Process pumping
• Wastewater handling
• Mining slurry
• Irrigation
• Chemical processing
• Utility systems

The drive can adjust motor speed according to the required flow or pressure.

This can be preferable to operating the motor continuously at full speed and controlling the process entirely through mechanical throttling.

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12. Application — Large Fans and Blowers

Large fans and blowers can require substantial motor power.

Typical applications include:

• Industrial ventilation
• Furnace systems
• Exhaust systems
• Dust collection
• Cooling systems
• Cement plants
• Steel-processing equipment
• Chemical-processing facilities

The drive allows the fan motor speed to be adjusted according to actual airflow requirements.

This can also improve process flexibility because the fan does not necessarily need to operate continuously at maximum speed.

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13. Application — Conveyors

Large conveyors can have substantial starting torque requirements.

The 20G11TF460JN0NNNNN can be considered for:

• Mining conveyors
• Bulk-material conveyors
• Cement conveyors
• Aggregate handling
• Steel material handling
• Port equipment
• Large warehouse systems

Controlled acceleration can reduce the sudden application of torque to the belt, gearbox and coupling.

This is especially useful for long conveyors or conveyors that start while carrying heavy material.

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14. Application — Crushers

Crushers are among the more demanding motor applications.

A crusher can experience:

• High starting torque
• Sudden load changes
• Mechanical shock
• High inertia
• Heavy-duty operation

For this type of equipment, the drive should be selected based on the actual motor current and mechanical load characteristics.

The Heavy-Duty rating is particularly important when the equipment frequently experiences high torque or overload conditions.

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15. Application — Mills and Grinding Equipment

Large mills and grinding machines can require hundreds of kilowatts.

The drive can provide:

• Controlled startup
• Adjustable operating speed
• Controlled stopping
• Torque management
• Process integration
• Motor monitoring
• Automated control

The ability to change operating speed can be useful when different production conditions require different machine speeds.

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16. Application — Mining Equipment

Mining operations commonly use very large electric motors.

Possible applications include:

• Ore conveyors
• Crushers
• Slurry pumps
• Ventilation fans
• Material handling
• Processing equipment
• Auxiliary machinery

The drive’s large-frame design and high-current capability make it appropriate for this class of equipment when the electrical and environmental requirements are properly matched.

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17. Application — Cement and Building-Material Plants

Cement production contains many high-power motor loads.

Potential applications include:

• Raw-material conveyors
• Crushers
• Grinding equipment
• Large fans
• Dust collection systems
• Process pumps
• Material-handling machinery

The ability to integrate the drive with a centralized automation system is particularly useful in large production facilities.

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18. Application — Steel and Metal Processing

Large steel and metal-processing systems can contain numerous high-power motors.

Potential applications include:

• Cooling fans
• Process pumps
• Conveyors
• Material-handling systems
• Auxiliary process equipment
• Production-line machinery

The drive can help coordinate motor speed with the overall production process.

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19. Application — Compressors and Process Machinery

Depending on the compressor design and required operating characteristics, a high-power AC drive can be used to control compressor motor speed.

The same concept can also be applied to other large process machines.

The main benefits are controlled starting, speed adjustment and integration with the plant control system.

For compressor applications, however, the actual drive selection should be based on compressor torque characteristics, motor current, acceleration requirements and the manufacturer’s application recommendations.

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20. Product Advantages Compared with Conventional Starting Equipment

Function	Conventional Motor Starter	20G11TF460JN0NNNNN
Basic Start/Stop	Yes	Yes
Adjustable Speed	Limited / No	Yes
Controlled Acceleration	Limited	Yes
Controlled Deceleration	Limited	Yes
Process Speed Control	Limited	Yes
Large Motor Control	Yes	Yes
Torque Control	Limited	Advanced
Automation Integration	Additional Equipment Often Required	Designed for Integration
Remote Monitoring	Limited	Yes
Drive Diagnostics	Limited	Advanced
High-Power Application	Yes	Yes
Energy Optimization	Limited	Possible
Production-Speed Adjustment	Limited	Yes

The main benefit is therefore not simply replacing a starter.

The real benefit is obtaining continuous control of motor operation.

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21. Filtering and Common-Mode Capacitor Configuration

The catalog number contains an important configuration detail.

The J position indicates the configuration with the common-mode capacitor jumper installed.

This distinguishes the model from a corresponding configuration using the alternative jumper arrangement.

Configuration Character	CM Capacitor Jumper
A	Removed
J	Installed

Therefore, 20G11TF460JN0NNNNN should be treated as a specific electrical configuration rather than simply as another part-number variation of the same drive.

When replacing an existing drive, the complete catalog number should be matched rather than comparing only the current rating.

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22. Why the No-HIM Configuration Can Be Useful

The model configuration includes no local HIM.

For an automated industrial installation, this can be perfectly practical when the drive is controlled and monitored through:

• PLC
• HMI
• Industrial network
• Remote control station
• Supervisory system

A local operator interface is not necessarily required when the drive is installed inside a dedicated electrical cabinet and all operating commands are provided by the plant control system.

This configuration can also help keep the local drive installation focused on system-level control rather than manual operator interaction.

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23. Recommended Same-Series Models

The following models are closely related 690 V PowerFlex 755 models and can be considered when a lower or higher drive capacity is required.

Recommended Model	Voltage	Current Class	Light Duty	Normal Duty	Heavy Duty	Frame	Approx. Dimensions	Approx. Weight
20G11TF265JN0NNNNN	690 V	330 A	315 kW	250 kW	200 kW	8	Approx. 2145 × 778 × 425 mm	Approx. 286 kg
20G11TF330JN0NNNNN	690 V	370 A	355 kW	315 kW	250 kW	8	Approx. 2145 × 778 × 425 mm	Approx. 286 kg
20G11TF370JN0NNNNN	690 V	410 A	400 kW	355 kW	300 kW	8	Approx. 2145 × 778 × 425 mm	Approx. 286 kg
20G11TF415JN0NNNNN	690 V	460 A	450 kW	400 kW	355 kW	8	Approx. 2145 × 778 × 425 mm	Approx. 286 kg
20G11TF500JN0NNNNN	690 V	530 A	530 kW	500 kW	400 kW	8	Large-frame configuration	Approx. 300 kg class

The model immediately below the 20G11TF460JN0NNNNN is 20G11TF415JN0NNNNN, making it a useful option when the motor current requirement is lower.

The model immediately above it is 20G11TF500JN0NNNNN, which provides additional current and power capacity.

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24. Same-Series Model Comparison

Model	Output Current	LD Power	ND Power	HD Power	Relative Position
20G11TF265JN0NNNNN	330 A	315 kW	250 kW	200 kW	Lower
20G11TF330JN0NNNNN	370 A	355 kW	315 kW	250 kW	Lower
20G11TF370JN0NNNNN	410 A	400 kW	355 kW	300 kW	Lower
20G11TF415JN0NNNNN	460 A	450 kW	400 kW	355 kW	Closest Lower Option
20G11TF460JN0NNNNN	500 A class	500 kW	450 kW	375 kW	Reference Model
20G11TF500JN0NNNNN	530 A	530 kW	500 kW	400 kW	Higher

This table shows the position of the 20G11TF460JN0NNNNN within the 690 V high-power group.

It is not the smallest or largest model in this group.

Instead, it is positioned toward the high-capacity section and provides a useful balance between motor capacity and drive size.

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25. Five Same-Series / Related Model Recommendations

25.1 20G11TF265JN0NNNNN

This model is suitable when the motor requirement is substantially below the 460 A class.

Its approximate Heavy-Duty capacity is around 200 kW, while the Light-Duty capacity reaches approximately 315 kW.

Parameter	Specification
Model	20G11TF265JN0NNNNN
Series	PowerFlex 755
Voltage	690 V
Current	330 A class
LD	Approx. 315 kW
ND	Approx. 250 kW
HD	Approx. 200 kW
Frame	8
Dimensions	Approx. 2145 × 778 × 425 mm
Weight	Approx. 286 kg

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25.2 20G11TF330JN0NNNNN

This is a useful step above the 265 A-class model.

It can be considered for large pumps, fans, conveyors and other applications where the motor requirement is around the 250–355 kW range depending on duty.

Parameter	Specification
Model	20G11TF330JN0NNNNN
Series	PowerFlex 755
Voltage	690 V
Current	370 A class
LD	Approx. 355 kW
ND	Approx. 315 kW
HD	Approx. 250 kW
Frame	8
Dimensions	Approx. 2145 × 778 × 425 mm
Weight	Approx. 286 kg

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25.3 20G11TF370JN0NNNNN

This model increases the available current and power capacity.

It is particularly relevant when the motor is larger than the 330 configuration but does not require the capacity of the 460 A model.

Parameter	Specification
Model	20G11TF370JN0NNNNN
Series	PowerFlex 755
Voltage	690 V
Current	410 A class
LD	Approx. 400 kW
ND	Approx. 355 kW
HD	Approx. 300 kW
Frame	8
Dimensions	Approx. 2145 × 778 × 425 mm
Weight	Approx. 286 kg

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25.4 20G11TF415JN0NNNNN

This is one of the closest lower-capacity alternatives to the reference model.

It is suitable when the motor requires substantial power but does not reach the current requirement of the 20G11TF460 configuration.

Parameter	Specification
Model	20G11TF415JN0NNNNN
Series	PowerFlex 755
Voltage	690 V
Current	460 A class
LD	Approx. 450 kW
ND	Approx. 400 kW
HD	Approx. 355 kW
Frame	8
Dimensions	Approx. 2145 × 778 × 425 mm
Weight	Approx. 286 kg

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25.5 20G11TF500JN0NNNNN

This model is the logical higher-capacity alternative.

It provides additional output-current capability and can be considered when the motor approaches the upper end of the 20G11TF460 range.

Parameter	Specification
Model	20G11TF500JN0NNNNN
Series	PowerFlex 755
Voltage	690 V
Current	530 A class
LD	Approx. 530 kW
ND	Approx. 500 kW
HD	Approx. 400 kW
Frame	Large Frame
Dimensions	Large-frame configuration
Weight	Approx. 300 kg class

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26. Five Popular Related Models Under the Same Brand

The following models represent different points in the same overall industrial-drive product range.

They are not direct electrical replacements for the 20G11TF460JN0NNNNN.

Instead, they are useful alternatives when the motor size, voltage, installation space or application requirements are different.

Model	Series	Voltage Class	Current / Rating	Typical Application	Approx. Dimensions	Approx. Weight
25B-D017N114	PowerFlex 525	480 V class	17 A class	Small/medium machinery	Approx. 220 × 130 × 180 mm	Approx. 4–5 kg
25B-D024N114	PowerFlex 525	480 V class	24 A class	Pumps, fans, conveyors	Approx. 220 × 130 × 180 mm	Approx. 4–5 kg
25B-D030N114	PowerFlex 525	480 V class	30 A class	Medium industrial equipment	Approx. 220 × 130 × 180 mm	Approx. 5 kg
20F1ANC140JA0NNNNN	PowerFlex 753	480 V class	140 A class	Medium/high-power machinery	Approx. 880 × 430 × 350 mm class	Approx. 73–109 kg
20G11TF460JN0NNNNN	PowerFlex 755	690 V class	460 A class	Large industrial motors	Approx. 2145 × 778 × 425 mm	Approx. 286 kg

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27. Model 25B-D017N114

The 25B-D017N114 belongs to the PowerFlex 525 family and is much smaller than the 20G11TF460JN0NNNNN.

It is intended for applications where a compact drive is more appropriate.

Parameter	Specification
Model	25B-D017N114
Series	PowerFlex 525
Voltage	480 V class
Current	Approx. 17 A
Application	Small/medium industrial motors
Typical Loads	Pumps, fans, conveyors, machines
Cooling	Air Cooled
Approx. Dimensions	220 × 130 × 180 mm
Approx. Weight	4–5 kg
Relative to 20G11TF460J	Much smaller

This model would generally be considered when the motor power is far below the several-hundred-kilowatt level.

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28. Model 25B-D024N114

The 25B-D024N114 provides a higher current level than the 17 A configuration while retaining the compact format.

Parameter	Specification
Model	25B-D024N114
Series	PowerFlex 525
Voltage	480 V class
Current	Approx. 24 A
Application	General industrial machinery
Typical Loads	Pumps, fans, conveyors
Cooling	Air Cooled
Approx. Dimensions	220 × 130 × 180 mm
Approx. Weight	4–5 kg
Installation	Panel Mount

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29. Model 25B-D030N114

The 25B-D030N114 is another compact alternative for medium-size motor applications.

Parameter	Specification
Model	25B-D030N114
Series	PowerFlex 525
Voltage	480 V class
Current	Approx. 30 A
Application	Medium industrial machinery
Typical Loads	Fans, pumps, conveyors, machine equipment
Cooling	Air Cooled
Approx. Dimensions	220 × 130 × 180 mm
Approx. Weight	Approx. 5 kg
Installation	Panel Mount

This model is dramatically smaller than the 20G11TF460JN0NNNNN and should therefore be considered for an entirely different motor-power range.

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30. Model 20F1ANC140JA0NNNNN

The 20F1ANC140JA0NNNNN belongs to the PowerFlex 753 family.

It occupies a middle position between compact drives and the very large Frame 8 PowerFlex 755 configurations.

Parameter	Specification
Model	20F1ANC140JA0NNNNN
Series	PowerFlex 753
Voltage	480 V class
Current	Approx. 140 A class
Drive Type	AC Variable Frequency Drive
Application	Medium/high-power industrial equipment
Typical Loads	Pumps, fans, conveyors, process machines
Installation	Panel / Cabinet
Approx. Dimensions	Approx. 880 × 430 × 350 mm class
Approx. Weight	Approx. 73–109 kg

It can be a useful alternative when the motor is considerably smaller and the electrical system is based on a 480 V class rather than a 690 V system.

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31. Comparison of Five Popular Models

Model	Series	Voltage	Approx. Current	Physical Size	Weight	Best Suited For
25B-D017N114	PowerFlex 525	480 V	17 A	Compact	4–5 kg	Small machines
25B-D024N114	PowerFlex 525	480 V	24 A	Compact	4–5 kg	Pumps/fans/conveyors
25B-D030N114	PowerFlex 525	480 V	30 A	Compact	Approx. 5 kg	Medium machinery
20F1ANC140JA0NNNNN	PowerFlex 753	480 V	140 A	Medium	73–109 kg	Medium/high-power machinery
20G11TF460JN0NNNNN	PowerFlex 755	690 V	460 A	Large	286 kg	Very large industrial motors

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32. 20G11TF460JN0NNNNN vs 20G11TF460AN0NNNNN

These two catalog numbers are very similar, but the configuration is not identical.

Item	20G11TF460JN0NNNNN	20G11TF460AN0NNNNN
Series	PowerFlex 755	PowerFlex 755
Voltage	690 V class	690 V class
Current	460 A class	460 A class
Frame	8	8
Filtering	Filtered	Filtered
CM Jumper	Installed	Removed
General Application	High-power industrial	High-power industrial

The J and A configuration characters should therefore not be ignored.

When replacing equipment, the complete catalog number should be checked.

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33. Recommended Selection by Application

Application	Suggested Model	Main Reason
Large low-torque fan	20G11TF415JN0NNNNN	Lower capacity may be sufficient
Large industrial pump	20G11TF460JN0NNNNN	High-power variable-speed control
Large loaded conveyor	20G11TF460JN0NNNNN	High current and torque capability
Very large process motor	20G11TF500JN0NNNNN	Additional capacity
Medium-large motor	20G11TF370JN0NNNNN	Lower current requirement
Medium industrial motor	20F1ANC140JA0NNNNN	Smaller high-power platform
Small industrial pump	25B-D017N114	Compact installation
Small/medium fan	25B-D024N114	Compact variable-speed control
Medium machine	25B-D030N114	Compact higher-current option

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34. Advantages for Energy Management

Variable-speed control can provide an important advantage in applications where the mechanical load varies with speed.

This is particularly relevant to:

• Pumps
• Fans
• Blowers
• Certain process systems

Instead of keeping a motor at full speed and reducing the process output through mechanical restriction, the drive can reduce motor speed when less output is required.

The actual energy savings depend heavily on the load characteristics, operating schedule, system design and control strategy.

For this reason, energy-saving performance should be evaluated on the complete machine rather than assumed solely from the presence of a VFD.

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35. Advantages for Equipment Protection

Controlled motor operation can also help reduce mechanical stress.

A properly configured acceleration ramp can reduce sudden torque transmission through the mechanical system.

This may help reduce stress on:

• Gearboxes
• Couplings
• Conveyor belts
• Pump shafts
• Fan assemblies
• Mechanical transmission components

Similarly, controlled deceleration can reduce abrupt stopping forces.

The result can be smoother machine operation and potentially lower mechanical wear.

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36. Advantages for Production Control

In a production environment, motor speed is often directly related to output.

For example:

Conveyor Speed → Material Throughput

Pump Speed → Flow

Fan Speed → Airflow

Motor Speed → Machine Production Rate

The drive can therefore become part of the process-control loop.

Instead of manually changing mechanical components, the operating speed can be changed electronically through the control system.

This is particularly useful when production requirements change frequently.

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37. Maintenance Considerations

A large Frame 8 drive requires an appropriate maintenance strategy.

Regular inspection should consider:

• Cooling fans
• Airflow
• Dust accumulation
• Electrical connections
• Cabinet ventilation
• Grounding
• Power terminals
• Control wiring
• Network connections
• Fault history
• Operating temperature
• Signs of overheating

The actual maintenance interval depends on the installation environment and operating conditions.

Dusty environments, high ambient temperatures and continuous heavy loading can increase maintenance requirements.

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38. Installation Environment

The drive is intended for industrial installation.

The final system should take into account:

• Ambient temperature
• Humidity
• Dust
• Altitude
• Ventilation
• Cabinet protection
• Electrical noise
• Grounding
• Motor cable length
• Motor insulation
• Harmonic conditions

An open-type drive should normally be integrated into an appropriately designed electrical enclosure or equipment system.

The final enclosure rating is determined by the complete installation rather than by the drive alone.

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39. Practical Selection Checklist

Before replacing or purchasing a 20G11TF460JN0NNNNN, the following parameters should be checked.

Selection Item	What to Check
Motor Voltage	Confirm compatibility with 690 V system
Motor Current	Compare directly with drive current rating
Motor Power	Check kW requirement
Duty	Light, Normal or Heavy Duty
Starting Torque	Confirm required torque
Overload	Determine overload duration
Acceleration	Determine required ramp time
Deceleration	Determine required stopping time
Motor Type	Confirm motor construction
Environment	Temperature, dust and humidity
Cabinet	Confirm physical space
Cooling	Confirm required airflow
Communication	Confirm network requirements
HIM	Determine whether local interface is required
Filtering	Confirm electrical configuration
CM Jumper	Confirm system compatibility
Weight	Allow for approximately 286 kg drive weight
Dimensions	Allow approximately 2145 × 778 × 425 mm

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40. Complete Parameter Summary

Category	Parameter	Specification
Product	Model	20G11TF460JN0NNNNN
Product	Brand	Allen-Bradley
Product	Series	PowerFlex 755
Product	Type	AC Variable Frequency Drive
Electrical	Input Voltage	690 V AC class
Electrical	Phase	3 Phase
Electrical	Current	460 A class
Power	Light Duty	Approx. 500 kW
Power	Normal Duty	Approx. 450 kW
Power	Heavy Duty	Approx. 375 kW
Construction	Frame	8
Construction	Cooling	Forced Air
Construction	Enclosure	Open Type
Input	Configuration	AC Input with Precharge
DC	DC Terminals	Yes
Filtering	Filter	Included
CM Configuration	Jumper	Installed
Communication	Network	Embedded EtherNet/IP
Operator Interface	HIM	None
Installation	Mounting	Floor / Cabinet
Mechanical	Height	Approx. 2145 mm
Mechanical	Width	Approx. 778 mm
Mechanical	Depth	Approx. 425 mm
Mechanical	Weight	Approx. 286 kg
Application	Motor Type	Large Three-Phase AC Motor
Application	Main Uses	Pumps, fans, conveyors, crushers, mills, process machinery

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41. Overall Product Evaluation

The 20G11TF460JN0NNNNN is a large-frame PowerFlex 755 AC drive intended for high-power industrial motor applications.

Its combination of 690 V AC input class, 460 A current capability, several-hundred-kilowatt motor ratings, Frame 8 construction, forced-air cooling and industrial network integration makes it suitable for large production equipment.

The model is particularly attractive when the application requires more than simple motor starting and stopping.

Its ability to regulate speed, control acceleration and deceleration, support demanding motor loads and communicate with an industrial control system makes it suitable for sophisticated production environments.

The model is especially well suited to:

• Large pumps
• Large fans
• Industrial blowers
• Conveyors
• Crushers
• Mills
• Mining machinery
• Cement equipment
• Steel-processing equipment
• Material-handling systems
• Large process machinery

Its physical size should not be underestimated.

With an approximate 2145 mm height, 778 mm width, 425 mm depth and 286 kg drive weight, this is a substantial industrial electrical assembly.

Cabinet design, lifting arrangements, floor loading, ventilation and maintenance access should all be considered during installation.

For a lower-capacity alternative in the same family, the 20G11TF415JN0NNNNN is a logical choice.

For additional capacity, the 20G11TF500JN0NNNNN is a logical higher-rated option.

For applications requiring a smaller drive, the PowerFlex 753 or PowerFlex 525 families provide substantially smaller solutions, although they are not direct electrical replacements for the 20G11TF460JN0NNNNN.

Overall, the 20G11TF460JN0NNNNN can be regarded as a high-power, 690 V industrial AC drive intended for large motors and demanding production equipment, with particular strengths in adjustable-speed operation, high-power motor control, controlled acceleration and deceleration, and integration into automated industrial systems.