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Allen-Bradley 20G11JC1K5AN0NNNNN PowerFlex 755 AC Drive – Detailed Product Information, Specifications, Applications, Advantages and Model Recommendations

1. Product Overview

The 20G11JC1K5AN0NNNNN is a high-power PowerFlex 755 AC Packaged Drive designed for large industrial three-phase AC motor applications.

It belongs to the PowerFlex 750-Series, with the specific product family being PowerFlex 755. This model is a large-frame, air-cooled industrial variable frequency drive intended for applications requiring very high motor current, substantial overload capability, advanced motor control and integration with industrial automation systems.

The model is configured for the 380–400 V AC / 400 V-class, three-phase supply range and has a rated output current of approximately 1,480 A. Its published power ratings are approximately 900 kW light duty, 850 kW normal duty and 710 kW heavy duty.

The combination of approximately 1,480 A output current and up to approximately 850 kW normal-duty power makes this a very large industrial drive. It is intended for applications such as large pumps, fans, compressors, conveyors, mills, material-handling equipment and other heavy industrial machinery.

This configuration uses an air-cooled, Frame 9, MCC-style cabinet arrangement with an approximate cabinet depth of 800 mm. It is also configured with embedded EtherNet/IP, filtered input circuitry and an AC input arrangement with DC terminals.

One important feature of this particular catalog number is the configuration represented by the AN0 portion of the catalog number. Compared with certain similar configurations using other option combinations, this version is associated with no standard door-mounted HIM configuration and a removed CM jumper configuration. Therefore, it should not be assumed to be identical to another PowerFlex 755 model simply because the first part of the catalog number is similar.

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2. Brand and Series

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3. Detailed Technical Specifications

Dimension and weight note: the 20G11JC1K5AN0NNNNN is a large packaged cabinet drive, so actual overall dimensions and shipping weight can vary according to cabinet configuration, internal power components, cable compartments, accessories and project-specific construction. The 2,200 × 800 × 800 mm class and approximately 1,000 kg class values are appropriate for general equipment planning, but the final mechanical drawing should be used for foundation loading, transportation and lifting calculations.

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4. Understanding the Power Rating

A particularly important point with this model is that it has three different published duty ratings.

This distinction is important when selecting the drive for a motor.

A motor should not be selected solely according to the highest number shown on the drive catalog. The actual load profile, starting torque, acceleration time, overload percentage, duty cycle and motor nameplate current must all be considered.

For example, a high-inertia conveyor may require a different selection approach from a centrifugal pump even if both motors have similar nominal horsepower.

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5. Product Introduction

The 20G11JC1K5AN0NNNNN is designed to regulate the speed and torque of large three-phase AC motors.

A conventional motor starter generally connects the motor directly to the electrical supply and provides relatively limited control over operating speed.

A variable frequency drive works differently. It controls the electrical power supplied to the motor so that the motor can operate at different speeds and torque levels according to the requirements of the production process.

For a large industrial machine, this can provide several practical benefits.

The motor can start gradually rather than immediately accelerating to full speed.

The motor can operate at reduced speed when the process does not require maximum capacity.

The motor can be decelerated according to a programmed profile.

The control system can monitor operating conditions and communicate drive information to a larger automation system.

The PowerFlex 755 platform is particularly suitable for this type of installation because it was designed around high-performance industrial motor control and automation integration.

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6. Main Product Characteristics

6.1 High-Current Industrial Drive

The approximately 1,480 A rating places this product in the high-current industrial-drive category.

This is not a compact wall-mounted inverter intended for a small machine.

It is a large cabinet-based system designed for very substantial motor loads.

The high current capacity allows the drive to be used with large motors employed in heavy industrial processes.

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6.2 850 kW Normal-Duty Capacity

The approximately 850 kW normal-duty rating makes the model suitable for large production equipment.

This power level is commonly associated with major industrial machinery such as large pumps, fans, compressors, conveyors and process equipment.

The 710 kW heavy-duty rating provides a lower power rating when the application requires greater overload capability.

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6.3 Air-Cooled Design

The drive uses forced-air cooling.

At this power level, thermal management is extremely important.

The electrical room or cabinet installation must provide suitable ventilation and sufficient space for air circulation.

The cooling system must also be maintained because blocked air passages, contaminated filters or deteriorated cooling components can affect drive operating temperature.

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6.4 Embedded EtherNet/IP

Embedded EtherNet/IP allows the drive to communicate with a suitable industrial automation network.

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

• Start and stop commands.
• Speed references.
• Actual speed.
• Output current.
• Drive status.
• Fault information.
• Warning information.
• Diagnostic information.
• Operating parameters.

This makes the drive part of the overall control architecture rather than simply being an independent motor controller.

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7. Motor Control Functions

V/Hz Control

V/Hz control is suitable for relatively straightforward motor applications where advanced torque control is not required.

It can be useful for certain fan and pump systems and other applications where motor speed requirements are relatively predictable.

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Sensorless Vector Control

Sensorless vector control provides more sophisticated motor performance without necessarily requiring a physical speed-feedback device.

It can improve speed regulation and torque response compared with basic V/Hz control.

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Advanced Vector Control

For demanding applications, advanced vector control can provide more precise control over motor torque and speed.

This can be particularly useful for conveyors, compressors, process machinery and other equipment where load changes can be significant.

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8. Typical Applications

8.1 Large Pumps

One of the most suitable applications for this type of drive is large pumping equipment.

Possible applications include:

• Water transfer pumps.
• Cooling-water pumps.
• Process-water pumps.
• Wastewater pumps.
• Industrial circulation pumps.
• Large irrigation pumps.
• Raw-water pumping systems.

The ability to adjust motor speed can provide better control of process flow.

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8.2 Industrial Fans

Large fans can require hundreds of kilowatts of motor power.

The drive can regulate fan speed according to actual airflow requirements.

Typical applications include:

• Furnace fans.
• Exhaust fans.
• Cooling fans.
• Dust collection fans.
• Cement-process fans.
• Combustion-air fans.
• Industrial ventilation systems.

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8.3 Compressors

Large compressors can require controlled acceleration and stable operating speed.

The drive can provide controlled motor operation where the compressor design and motor are suitable for variable-frequency operation.

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8.4 Mining Conveyors

Mining conveyors frequently use large motors and can experience high starting loads.

A variable frequency drive can provide controlled acceleration and reduce mechanical shock.

Possible applications include:

• Ore conveyors.
• Coal conveyors.
• Overland conveyors.
• Transfer conveyors.
• Bulk-material handling systems.

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8.5 Cement Manufacturing

Cement plants use many high-power motors.

Potential applications include:

• Large process fans.
• Crushers.
• Conveyors.
• Mills.
• Feeders.
• Pumps.
• Material-handling equipment.

The PowerFlex 755 architecture is particularly relevant to plants where large motors need to be connected to a centralized automation system.

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8.6 Steel and Metal Processing

Steel production and metal processing involve numerous large motor loads.

Potential applications include:

• Cooling-water pumps.
• Large fans.
• Conveyors.
• Rolling equipment.
• Material-handling machinery.
• Process pumps.
• Auxiliary production equipment.

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9. Product Advantages

9.1 Very High Power Capacity

The most important advantage is its large power-handling capability.

With approximately 850 kW normal-duty capacity, this model can control motors that are substantially larger than those normally served by compact industrial VFDs.

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9.2 High Current Capability

The approximately 1,480 A normal-duty output rating provides substantial current capacity.

This makes the drive suitable for large industrial motors where high current is unavoidable.

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9.3 Flexible Control

The PowerFlex 755 platform supports multiple motor-control strategies.

This gives engineers greater flexibility when configuring different machines.

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9.4 Industrial Network Integration

Embedded EtherNet/IP simplifies integration into suitable PLC-based automation architectures.

This can reduce the amount of separate communication hardware required.

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9.5 Expandable Architecture

The platform supports additional option modules.

Depending on the application, these can provide additional:

• I/O.
• Feedback.
• Communications.
• Safety functionality.
• Control functions.

This allows the drive to be adapted to different industrial requirements.

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9.6 Advanced Diagnostics

Drive status and fault information can be made available to maintenance personnel and automation systems.

This can improve troubleshooting efficiency and reduce unnecessary downtime.

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9.7 Suitable for Centralized Industrial Installations

The large MCC-style cabinet construction makes the product suitable for electrical rooms and centralized motor-control installations.

It can be incorporated into larger switchgear and automation systems where floor-standing cabinet equipment is preferred.

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10. Configuration Characteristics of 20G11JC1K5AN0NNNNN

The catalog number is particularly important when comparing similar models.

The 20G11JC1K5AN0NNNNN configuration should not simply be considered equivalent to another 20G11 model.

Important characteristics include:

The AN0 configuration is particularly worth checking when purchasing a replacement because a similar model with a JN0 or JN4 suffix may have different factory options.

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11. Five Recommended Models from the Same Series or Closely Related Series

The following models are useful for comparison with the 20G11JC1K5AN0NNNNN.

20G11JC1K4AN0NNNNN

This model is a logical lower-power comparison within the same 400 V PowerFlex 755 platform.

Its approximately 1,465 A current rating and 800 kW normal-duty rating make it suitable for applications slightly below the capacity of the 20G11JC1K5AN0NNNNN.

It can be considered when the connected motor is approximately in the 800 kW class rather than the 850 kW class.

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20G11JC1K5JN0NNNNN

This is especially interesting because it maintains the same major electrical rating as the requested model while changing the configuration represented by the catalog number.

It has approximately 1,480 A, 900 kW light-duty, 850 kW normal-duty and 710 kW heavy-duty ratings.

It should therefore be considered a close configuration alternative, but the specific option differences must be checked before treating it as a direct replacement.

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20G11JC1K6AN0NNNNN

This model moves to approximately 1,590 A and approximately 900 kW normal-duty capacity.

It provides additional current and power capacity compared with the requested model.

However, it is a larger Frame 10 configuration, so physical dimensions, cabinet space, weight and installation requirements need to be considered.

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20G11JD1K4AN0NNNNN

This model moves from the 400 V class to the 480 V class.

It is useful when the plant electrical system uses approximately 480 V three-phase power.

Its approximate ratings are 1,420 A, 1,350 HP light duty, 1,250 HP normal duty and 1,000 HP heavy duty.

It is related to the requested model from a product-family perspective but is not an electrically interchangeable replacement for a 400 V system.

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20G11JF1K4AN0NNNNN

This is a higher-voltage PowerFlex 755 configuration intended for approximately 690 V AC systems.

Its approximate power ratings reach 1,500 kW light duty, 1,400 kW normal duty and 1,120 kW heavy duty.

It is particularly relevant to large industrial installations where higher motor voltage is used to reduce current compared with an equivalent lower-voltage motor.

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12. Five Popular Models from the Same Brand for Broader Comparison

These models cover different sections of the industrial-drive range and can be useful when evaluating alternatives according to motor size.

The models above demonstrate the breadth of the same brand’s drive portfolio, from compact machine-level drives through very large high-power industrial drives.

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13. Dimensions and Weight Comparison

For the large Frame 9 and Frame 10 configurations, actual weight can change according to cabinet options, cable compartments, power components, accessories and the final factory configuration.

For transport, lifting equipment, floor loading and cabinet positioning, the exact equipment drawing and shipping weight should always be used.

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14. Application Selection Guide

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15. Advantages for Pump Applications

For pump systems, the drive can provide more than simple motor starting.

It can allow the motor to operate at the speed required by the process.

This can provide:

• Better flow control.
• Reduced mechanical stress.
• Controlled acceleration.
• Controlled deceleration.
• Potential energy savings.
• Reduced pressure fluctuations.
• Improved process stability.

For centrifugal pump applications, speed control can be particularly valuable because pump power consumption is strongly related to operating speed.

The actual energy savings depend on the hydraulic system and operating profile, so the drive should be evaluated together with the pump and process system rather than as an isolated component.

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16. Advantages for Conveyor Applications

Large conveyor systems often experience considerable mechanical stress during starting.

A direct-on-line motor starter can produce a sudden torque increase.

A variable frequency drive can instead establish a controlled acceleration profile.

This can reduce stress on:

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

It can also improve the coordination of multiple conveyor sections when suitable control architecture is used.

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17. Advantages for Fan Applications

Large industrial fans frequently do not need to run at maximum speed continuously.

The drive can regulate fan speed according to process demand.

This can improve:

• Airflow regulation.
• Pressure control.
• Process stability.
• Startup behavior.
• Motor operation.
• Energy efficiency.

For industrial ventilation, furnace systems and process exhaust systems, this can be a major practical advantage.

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18. Communication and Automation Advantages

The embedded EtherNet/IP capability is an important part of the PowerFlex 755 architecture.

In a suitable automation system, the drive can exchange data with the control system without requiring a separate basic communication interface for every function.

Typical information includes:

This can simplify system monitoring and provide maintenance personnel with more information about the condition of the motor-drive system.

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19. Maintenance Considerations

Because this is a very high-power drive, maintenance should be considered part of the overall installation design.

Important maintenance areas include:

Cooling System

Air passages, fans and filters should be inspected regularly.

High-power semiconductor equipment produces substantial heat, so maintaining proper airflow is essential.

Electrical Connections

High-current connections require appropriate torque, inspection and thermal management.

Loose connections can generate heat and create significant reliability problems.

DC Bus Components

Large drives contain substantial DC-bus energy-storage components.

Maintenance procedures must follow appropriate electrical safety procedures and allow sufficient discharge time before internal work is performed.

Cabinet Environment

Dust, moisture, conductive contamination and excessive ambient temperature can negatively affect drive life.

The electrical room should therefore be maintained appropriately.

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20. Key Selection Parameters for a Replacement

If the 20G11JC1K5AN0NNNNN is being considered for replacement or procurement, the following information should be confirmed.

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21. Main Advantages at a Glance

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22. Comparison with the Previous 20G11JC1K4 Configuration

The 20G11JC1K5AN0NNNNN is especially close to the 20G11JC1K4 family configuration.

The K5 configuration therefore provides a useful step up in capacity while retaining the same general high-power PowerFlex 755 architecture.

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23. Five Closest Same-Series Recommendations

For users looking for a similar product, the following five models are the most useful starting points:

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24. Five Broader Popular Model Recommendations

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25. Overall Product Evaluation

The 20G11JC1K5AN0NNNNN is best understood as a large-frame, high-power industrial variable frequency drive rather than a conventional general-purpose inverter.

Its approximately 1,480 A output current, 900 kW light-duty rating, 850 kW normal-duty rating and 710 kW heavy-duty rating give it substantial capacity for large AC motors.

The combination of a 400 V-class three-phase input, Frame 9 construction, air cooling, MCC-style cabinet, approximately 800 mm cabinet depth and embedded EtherNet/IP makes it particularly suitable for large centralized industrial motor-control systems.

Its biggest strengths are high power capacity, flexible motor control, industrial communication, expandable functionality and suitability for demanding continuous-duty applications.

The product is particularly attractive for large pumps, fans, conveyors, compressors, mining machinery, cement equipment, steel-processing equipment, material-handling systems and other applications where a motor needs controlled speed and torque rather than simple on/off operation.

The 20G11JC1K5AN0NNNNN is also a good choice when the motor is in the approximately 850 kW normal-duty class and the installation requires a large industrial cabinet drive.

For applications with lower motor power, using such a large drive would generally be unnecessary and would increase installation cost, physical space requirements and electrical infrastructure requirements. Conversely, applications with substantially higher overload requirements should be evaluated against the heavy-duty rating rather than the light-duty rating.

The most closely related alternatives are 20G11JC1K4AN0NNNNN, 20G11JC1K5JN0NNNNN, 20G11JC1K6AN0NNNNN, 20G11JD1K4AN0NNNNN and 20G11JF1K4AN0NNNNN.

Among these, the 20G11JC1K5JN0NNNNN is particularly close in electrical rating, while the 20G11JC1K4AN0NNNNN provides a slightly lower-capacity option and the 20G11JC1K6AN0NNNNN provides a higher-capacity 400 V option.

One final point is important for procurement: 20G11JC1K5AN0NNNNN is a discontinued catalog configuration, so it should not be assumed that a new-production unit is available simply because the catalog number can still be identified. When replacing an existing unit, the complete catalog number and its option configuration should be compared against the available replacement configuration.

In practical terms, the 20G11JC1K5AN0NNNNN remains a substantial high-power PowerFlex 755 platform configuration characterized by approximately 850 kW normal-duty output, 1,480 A current capacity, 400 V three-phase operation, Frame 9 construction, air cooling, 800 mm-class cabinet depth and EtherNet/IP integration. It is best suited to large industrial facilities where reliable variable-speed control of high-power motors is a central part of the production process.