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Allen-Bradley 20G11JD1K2AN0NNNNN — Detailed Product Description, Technical Parameters, Applications, Advantages and Related Models

The 20G11JD1K2AN0NNNNN is a high-power industrial AC variable frequency drive belonging to the PowerFlex 755 series.

It is designed for large three-phase AC motor applications where high current capacity, adjustable motor speed, controlled acceleration and deceleration, industrial networking, and reliable process control are required.

The following description is written as a standalone technical product introduction and does not include external links, source references, or company information other than the requested brand and product identification.

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1. Product Basic Information

The most important point about this model is its very high current capability.

It is not a small or medium-size inverter. It belongs to the large industrial-drive category and is intended for motors requiring hundreds of kilowatts of electrical power and very high operating current.

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2. Brand and Product Series

Brand

Allen-Bradley

Product Family

PowerFlex

Product Series

PowerFlex 755

Product Category

High-Power Industrial AC Drive / Variable Frequency Drive

The PowerFlex 755 platform is designed for applications where conventional small general-purpose drives are not sufficient.

It provides a combination of high-power motor control, configurable control functions, industrial communication, monitoring, diagnostics, and flexible application control.

The 20G11JD1K2AN0NNNNN represents one of the high-current configurations within the PowerFlex 755 range.

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3. Product Introduction

The 20G11JD1K2AN0NNNNN is a large-capacity variable frequency drive intended to control the speed, torque and operating behavior of a three-phase AC motor.

A conventional motor connected directly to a fixed-frequency power supply normally operates at a speed determined primarily by its rated frequency and motor characteristics.

A variable frequency drive changes this operating method.

Instead of simply applying fixed-frequency power to the motor, the drive generates a controlled output waveform whose frequency and voltage can be adjusted.

This allows the motor to operate at different speeds according to the requirements of the machine.

For a large industrial motor, this capability can be extremely useful.

A pump does not always need maximum flow.

A fan does not always need maximum airflow.

A conveyor does not always need maximum speed.

A blower may need to maintain a particular pressure.

A process machine may need different speeds during different stages of production.

The drive provides the electrical control platform necessary to accommodate these changes.

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4. Main Electrical Characteristics

The 20G11JD1K2AN0NNNNN is designed for a 480 VAC, three-phase electrical supply.

Its high-power configuration is associated with an approximately 1365 A current class.

The principal horsepower ratings are approximately:

These ratings are important because the same drive can have different usable power ratings depending on the load profile.

A centrifugal fan generally behaves differently from a heavy conveyor.

A centrifugal pump has different torque characteristics from a mixer.

A high-inertia machine may require substantially different acceleration and deceleration behavior from a continuously running blower.

Therefore, the drive should be selected using the motor’s actual nameplate current and application duty rather than horsepower alone.

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5. Detailed Technical Parameter Table

The mechanical dimensions and weight should be treated as planning values for the specified large-frame configuration.

For actual cabinet installation, the final mechanical drawing should always be matched to the exact ordered configuration because cabinet accessories, incoming/outgoing cable arrangements and other options can affect the installation envelope.

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6. Physical Dimensions and Weight

The physical size of this drive is an important consideration.

At approximately 1287 kg, this is heavy industrial electrical equipment.

Transportation, unloading, positioning, lifting, floor loading and maintenance access all need to be considered during project planning.

The cabinet height of approximately 2102 mm should also be considered when checking the electrical-room entrance, transportation route and installation space.

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7. Input Power Configuration

The drive uses an AC input arrangement with precharge and DC terminals.

Precharge is particularly important in a large drive because the DC bus contains substantial electrical energy.

During startup, the charging process needs to be controlled to prevent excessive initial current.

The DC terminals can also be relevant to system-level DC bus arrangements and engineering configurations.

Because this is a high-power drive, the incoming power system needs to be engineered carefully.

The selection of upstream protection, disconnecting equipment, cabling, grounding, transformer capacity and other electrical components should be based on the complete installation design.

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8. Output and Motor Control

The primary function of the drive is to provide controlled electrical power to a large AC motor.

The drive can regulate motor speed and torque according to the selected control strategy.

This allows the motor to move away from simple fixed-speed operation.

The main benefits include:

• Adjustable motor speed.
• Controlled acceleration.
• Controlled deceleration.
• Improved process regulation.
• Reduced mechanical shock.
• Better matching between motor output and process demand.
• Motor monitoring.
• Drive diagnostics.
• Integration with automated control systems.

For large industrial equipment, these functions can significantly improve the way the motor interacts with the mechanical process.

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9. Duty Rating Explanation

Light Duty — Approximately 1100 HP

The Light Duty rating is suitable for applications where the load profile does not require the same overload capability as a heavy constant-torque machine.

Typical examples include:

• Large centrifugal fans.
• Large centrifugal pumps.
• Certain blowers.
• Variable-torque equipment.
• Large ventilation systems.

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Normal Duty — Approximately 1000 HP

Normal Duty provides a lower horsepower rating than Light Duty but is suitable for more demanding continuous industrial applications.

Typical examples include:

• Large process pumps.
• Industrial fans.
• Blowers.
• Certain compressors.
• Process machinery.

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Heavy Duty — Approximately 800 HP

Heavy Duty is the relevant rating when the machine requires greater overload capability or higher torque performance.

Typical applications include:

• Heavy conveyors.
• Mixers.
• High-inertia machinery.
• Constant-torque machines.
• Heavy material-handling equipment.

The Heavy Duty rating should receive particular attention when the machine repeatedly accelerates, decelerates or operates at high torque.

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10. Product Applications

10.1 Large Water Pumps

Large water pumps are one of the most natural applications for a high-power variable frequency drive.

The motor speed can be adjusted according to the required water flow.

Potential applications include:

• Water treatment.
• Wastewater treatment.
• Industrial water circulation.
• Cooling-water systems.
• Water transfer stations.
• Irrigation systems.
• Process-water systems.

Variable-speed operation can provide more precise flow control than simply starting and stopping a fixed-speed pump.

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10.2 Cooling Systems

Industrial facilities often use large pumps and fans for cooling.

The required cooling capacity can change according to production load and environmental conditions.

The drive allows the motor speed to be adjusted rather than maintaining maximum output continuously.

This can provide:

• Better temperature regulation.
• Flexible flow control.
• Controlled starting.
• Reduced mechanical stress.
• Potential energy savings.

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10.3 Large Industrial Fans

Large industrial fans can consume considerable amounts of electrical power.

Applications include:

• Furnace ventilation.
• Industrial exhaust.
• Dust collection.
• Air circulation.
• Process ventilation.
• Large HVAC systems.
• Manufacturing facilities.
• Mining facilities.

Variable-speed control allows airflow to follow the actual process requirement.

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10.4 Large Blowers

Large blowers are commonly used in process-air systems.

Examples include:

• Wastewater aeration.
• Pneumatic conveying.
• Industrial ventilation.
• Combustion-air systems.
• Process-air systems.

The drive can adjust motor speed to maintain the desired airflow or pressure.

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10.5 Compressors

Large compressors can require very high motor power.

Where the compressor is designed for variable-speed operation, the drive can adjust motor speed according to process requirements.

Potential benefits include:

• Controlled startup.
• Variable capacity.
• Improved process matching.
• Reduced mechanical shock.
• Centralized monitoring.
• Automated speed control.

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10.6 Heavy Conveyors

Large conveyors may have very high inertia.

Starting a large conveyor directly can create substantial mechanical stress.

A variable frequency drive can provide a controlled acceleration ramp.

This can reduce sudden loading on:

• Gearboxes.
• Couplings.
• Shafts.
• Bearings.
• Conveyor belts.
• Mechanical structures.

The Heavy Duty rating should be used when the application requires high starting torque or repeated overload capability.

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10.7 Large Mixers

Mixing equipment can have demanding torque requirements.

The drive can provide controlled acceleration and adjustable speed.

This can be useful when the process requires:

• Slow startup.
• Multiple operating speeds.
• Controlled acceleration.
• Process-based speed adjustment.
• Constant torque operation.

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11. Product Advantages

11.1 Very High Power Capacity

The approximately 1100 HP Light Duty rating places this model in the high-power industrial category.

It is capable of controlling motors far larger than those normally handled by compact general-purpose drives.

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11.2 High Current Capacity

The approximately 1365 A current class provides substantial output capability.

This makes the drive suitable for large motors used in heavy industrial equipment.

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11.3 Variable-Speed Operation

The motor can operate at different speeds instead of remaining locked to one fixed operating point.

This is especially valuable for:

• Pumps.
• Fans.
• Blowers.
• Compressors.
• Conveyors.
• Process machinery.

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11.4 Controlled Acceleration

A large motor can place substantial mechanical stress on a machine during startup.

The drive can establish a controlled acceleration profile.

This helps provide smoother machine startup.

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11.5 Controlled Deceleration

The drive can also control the rate at which the motor slows down.

This can help prevent abrupt mechanical changes.

However, high-inertia applications require careful consideration of regenerated energy.

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11.6 Industrial Network Integration

Embedded EtherNet/IP provides a practical method for connecting the drive with an industrial control architecture.

This can allow the automation system to exchange information such as:

• Start command.
• Stop command.
• Speed reference.
• Actual speed.
• Current.
• Status.
• Warning.
• Fault.
• Diagnostic information.

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11.7 Industrial Cabinet Design

The MCC-style floor-mounted cabinet is suitable for large electrical-room installations.

It provides a more appropriate mechanical arrangement for very-high-power equipment than a compact wall-mounted drive.

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11.8 EMC Filtering

The specified EMC filter configuration can help manage high-frequency electrical effects associated with drive operation.

This is particularly relevant in industrial environments containing multiple electronic systems.

Proper grounding, cable routing and motor-cable practices remain important.

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12. Dynamic Braking

The 20G11JD1K2AN0NNNNN configuration does not include an internal dynamic-braking transistor.

This should be considered carefully when the motor drives a high-inertia load.

During deceleration, the motor can return energy toward the drive.

Examples of applications where this may become significant include:

• Large flywheel systems.
• High-inertia fans.
• Heavy conveyors.
• Centrifugal equipment.
• Certain winding systems.
• Rapidly decelerating machinery.

If rapid deceleration is required, the complete braking or regenerative-energy strategy should be evaluated during system design.

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13. HIM Configuration

This model is specified with a Blank / No HIM configuration.

HIM means Human Interface Module.

A drive with a local HIM can provide convenient local access to operating parameters and diagnostic information.

The no-HIM configuration is useful when the drive is intended to be controlled from:

• PLC systems.
• SCADA systems.
• Control rooms.
• Distributed automation systems.
• Centralized operator stations.

This configuration can also reduce the need for a local operator interface on the cabinet door.

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14. EtherNet/IP Integration

The embedded EtherNet/IP capability is one of the useful characteristics of the PowerFlex 755 platform.

In an automated production system, the drive can become part of the overall control network.

A PLC can provide a speed command to the drive.

The drive can return information such as motor speed and current.

The control system can also monitor drive status and faults.

This makes the drive suitable for large automated production systems where motor control is integrated with a wider automation strategy.

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15. Energy Efficiency and Process Optimization

A variable frequency drive does not automatically guarantee a particular energy saving.

However, it can provide the control necessary to reduce motor speed when full output is not required.

This is especially valuable with centrifugal pumps and fans.

For example, if a pump only needs reduced flow, operating the motor at a lower speed can be more efficient than running the motor at full speed and dissipating excess flow through a valve.

Likewise, a fan can reduce speed when less airflow is required.

Potential benefits include:

• Reduced unnecessary motor operation.
• Better process control.
• Lower mechanical stress.
• Improved operating flexibility.
• Reduced starting current compared with direct starting methods.
• Potential reduction in energy consumption.

The actual result depends on the motor, load curve, operating hours, process requirements and system design.

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16. Installation Considerations

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17. Five Recommended Models from the Same Series

The following models are useful related PowerFlex 755 configurations around the same high-power range.

These models are particularly relevant when the project is operating from a 480 VAC three-phase supply.

The 20G11JD1K0AN0NNNNN is a useful lower-capacity alternative.

The 20G11JD1K3AN0NNNNN is a useful higher-capacity alternative.

For a replacement project, the complete catalog number should be compared rather than selecting solely according to horsepower.

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18. Same-Series Model Comparison

The principal selection factor should be the actual motor current and application duty.

The horsepower value alone does not completely describe the required drive size.

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19. Five Related High-Power Models

These models are related choices rather than direct substitutions.

A 400 VAC drive should not be substituted for a 480 VAC motor simply because the horsepower appears similar.

The motor voltage, current, duty, cabinet arrangement and complete catalog configuration all need to match.

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20. Five Popular Models from the Same Brand

For a broader product selection, the following models represent useful members of the same manufacturer’s industrial drive portfolio.

The last two models are from different PowerFlex series and are therefore not direct replacements for the 20G11JD1K2AN0NNNNN.

They are included because they are useful when the project contains a mixture of small, medium and large motors.

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21. PowerFlex 755 vs. Smaller Drive Classes

This comparison shows why the 20G11JD1K2AN0NNNNN should generally be considered for large industrial systems rather than ordinary machine-level applications.

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22. Advantages in Pump Applications

For a large pump, the main advantage is the ability to match motor speed to actual flow demand.

Instead of operating the motor continuously at full speed, the drive can adjust the speed according to the process requirement.

This can improve:

• Flow regulation.
• Pressure regulation.
• Starting performance.
• System flexibility.
• Energy utilization.
• Mechanical operating conditions.

The drive can also communicate operating information to the control system, allowing the pump to become part of an automated process.

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23. Advantages in Fan Applications

Large fans are frequently suitable for variable-speed control.

A fan may not need maximum airflow during every production condition.

Reducing speed can change the operating point of the fan.

Potential benefits include:

• Improved airflow control.
• Reduced unnecessary operation.
• Controlled startup.
• Reduced mechanical shock.
• Improved automation.
• Potential energy savings.

This makes the PowerFlex 755 platform particularly useful for large industrial ventilation systems.

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24. Advantages in Conveyor Applications

For large conveyors, the acceleration profile can be extremely important.

A direct start can place a sudden mechanical load on the belt and gearbox.

The drive can provide a gradual acceleration ramp.

This can help reduce:

• Belt shock.
• Gearbox stress.
• Coupling stress.
• Shaft stress.
• Bearing loading.
• Product movement shock.

For conveyors with high inertia or heavy starting loads, the Heavy Duty rating and acceleration requirements need to be carefully considered.

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25. Advantages in Compressor Applications

Large compressors can have significant starting requirements.

A controlled motor start can reduce the mechanical shock associated with sudden acceleration.

The drive can also provide adjustable operating speed where the compressor package is designed for variable-speed operation.

Potential advantages include:

• Adjustable capacity.
• Controlled acceleration.
• Process integration.
• Motor monitoring.
• Centralized control.
• Diagnostic information.

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26. Advantages in Industrial Process Machinery

The drive can be used where motor speed is part of the process itself.

Examples include:

• Material processing.
• Mixing.
• Material handling.
• Large production lines.
• Process ventilation.
• Industrial pumping.
• Large mechanical systems.

The ability to adjust speed allows the machine designer to coordinate motor behavior with production requirements.

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27. Maintenance and Reliability Considerations

The large physical size and power level of this drive make maintenance planning particularly important.

Cooling airflow should be maintained.

The cabinet should be kept free of excessive dust accumulation.

Electrical connections should be inspected according to the applicable maintenance program.

The cooling system should be monitored for abnormal conditions.

Network communication should also be checked where the drive is integrated into a control network.

Because the equipment weighs approximately 1287 kg, major maintenance or replacement should be treated as a heavy-equipment operation.

Suitable lifting and handling equipment should be planned before installation.

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28. Important Selection Considerations

Before selecting the 20G11JD1K2AN0NNNNN, the following information should be checked:

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29. Product Strengths at a Glance

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30. Recommended Model Selection by Application

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31. Overall Technical Assessment

The 20G11JD1K2AN0NNNNN is a large-frame, high-current industrial AC drive designed for applications where motor power and current are far beyond the range of ordinary compact inverters.

Its approximately 1365 A current class and approximately 1100 HP Light Duty / 1000 HP Normal Duty / 800 HP Heavy Duty ratings make it particularly suitable for large industrial motors.

Its 480 VAC three-phase input, Frame 9 construction, air cooling, Type 12 / IP54 class cabinet, EMC filtering, DC terminals, embedded EtherNet/IP, and blank/no-HIM configuration make it appropriate for centralized industrial automation systems.

The physical size is substantial.

A planning value of approximately 2102 mm high × 1006 mm wide × 600 mm deep, with an approximate 1287 kg weight, means that the equipment should be incorporated into the project at the electrical-room and mechanical-layout stage rather than treated as a simple panel-mounted inverter.

The drive is especially well suited to large pumps, fans, blowers, compressors, conveyors, cooling systems and other process machinery.

Its greatest advantage is not simply the high horsepower rating.

The more important advantage is the combination of high current capacity, variable-speed motor control, controlled acceleration and deceleration, industrial communication, monitoring and large-drive construction.

For a large pump or fan, the drive can provide flexible process control.

For a conveyor or mixer, it can provide controlled acceleration and torque management.

For a compressor or blower, it can allow motor operation to be matched more closely to process demand.

For an automated production line, the embedded network capability allows the drive to participate in the wider control system.

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32. Final Technical Summary

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Conclusion

The 20G11JD1K2AN0NNNNN is a high-capacity PowerFlex 755 industrial variable frequency drive intended for very large three-phase AC motors.

Its approximately 1365 A current capability and approximately 1100 HP Light Duty, 1000 HP Normal Duty and 800 HP Heavy Duty ratings make it suitable for demanding industrial applications.

The combination of large-frame construction, air cooling, Type 12 / IP54 class enclosure, EMC filtering, DC-terminal capability, EtherNet/IP communication and flexible motor-control functions makes it a strong choice for large-scale industrial motor systems.

The model is particularly suitable when the objective is not simply to turn a large motor on and off, but to make the motor an adjustable and controllable part of the production process.

For procurement and engineering purposes, the complete catalog number 20G11JD1K2AN0NNNNN should be retained exactly as specified, because the individual suffix characters identify configuration details that can affect electrical installation, filtering, operator-interface configuration and system compatibility.