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Allen-Bradley 20G11BC2K1AN0NNNNN — Detailed Product Specification, Introduction, Applications and Model Selection Guide

1. Product Overview

The 20G11BC2K1AN0NNNNN is a high-power PowerFlex 755 AC variable frequency drive designed for large industrial motor applications.

It is a 400 VAC, three-phase, air-cooled drive with an exceptionally high output-current capability of approximately 2,150 A.

Its published power ratings are approximately 1,400 kW Light Duty, 1,250 kW Normal Duty, and 1,000 kW Heavy Duty.

This places the model in the very high-power end of the PowerFlex 755 family and makes it suitable for large pumps, fans, blowers, conveyors, mining equipment, cement machinery, material-handling systems, and other heavy industrial applications.

The configuration is based on Frame 10 construction, with an IP20 / Type 1, 600 mm deep MCC-style arrangement.

The model also includes embedded EtherNet/IP, AC input with precharge, DC terminals, filtering, and a blank/no-HIM configuration.

One important catalog detail is that the AN0 configuration has the CM jumper removed.

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2. Brand and Product Series

The PowerFlex 755 series is intended for large industrial applications where a basic speed controller is not enough.

The series combines high-power motor control with communication, diagnostics, process-control functions, feedback capabilities, safety options, and flexible system integration.

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3. Main Technical Parameters

The dimensions and weight above are approximate Frame 10 MCC-style values, rather than a claim that every possible packaged installation has exactly the same physical dimensions.

For the standard IP20 MCC-style arrangement, the reference dimensions are approximately 2,453 mm high × 1,800 mm wide × 600 mm deep, with an alternative 800 mm depth configuration.

The approximate drive-and-cabinet weight is around 1,869 kg for the basic Frame 10 MCC-style configuration, while a larger drive-and-option-cabinet arrangement can reach approximately 3,435 kg.

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4. Electrical Rating

The electrical rating is one of the most impressive aspects of the 20G11BC2K1AN0NNNNN.

With approximately 2,150 A output current, this is a drive intended for very large motor systems.

Its principal power ratings are:

The difference between these three ratings is important.

The 1,400 kW Light Duty rating should normally be considered for applications with relatively moderate overload requirements.

The 1,250 kW Normal Duty rating is a more useful reference for many conventional industrial motor applications.

The 1,000 kW Heavy Duty rating is particularly important when the machine requires higher torque or experiences more severe overload conditions.

The actual motor selection should be based on motor full-load current, torque requirements, overload profile, acceleration time, ambient conditions, and the complete drive application rather than motor horsepower alone.

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5. 2,150 A Output Current

The 2,150 A output current is the defining characteristic of this model.

This is a very large current rating and puts the drive firmly into the high-power industrial category.

At this current level, the drive is normally associated with large motors and major industrial machinery.

Typical applications include:

• Large process pumps
• Large cooling-water pumps
• Large industrial fans
• Large blowers
• Long-distance conveyors
• Mining conveyors
• Bulk-material handling
• Cement equipment
• Mineral-processing equipment
• Heavy industrial machinery
• Large process machinery
• High-power ventilation systems

Because of the very high current, the electrical infrastructure must be designed accordingly.

This includes the transformer, incoming switchgear, protection, busbars, motor cables, grounding, cabinet ventilation, and short-circuit protection.

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6. Light Duty Rating — 1,400 kW

The 1,400 kW Light Duty rating provides the highest power capability of the three published duty classes.

It is most appropriate for applications where the load does not require severe overload capability.

Examples may include large variable-torque machines such as:

• Centrifugal pumps
• Large fans
• Cooling systems
• Large blowers
• Certain process-air systems

For variable-torque applications, the motor torque characteristics are often relatively predictable.

This makes the high-power rating particularly useful for large continuous-running equipment.

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7. Normal Duty Rating — 1,250 kW

The 1,250 kW Normal Duty rating is an important selection reference for general industrial applications.

It can be appropriate for large motors operating continuously under relatively normal industrial load conditions.

Potential applications include:

• Large pumps
• Large ventilation systems
• Material-handling equipment
• Industrial blowers
• Process machinery
• Large auxiliary systems

The motor’s actual nameplate current remains the key factor when confirming compatibility.

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8. Heavy Duty Rating — 1,000 kW

The 1,000 kW Heavy Duty rating is intended for applications with greater torque and overload demands.

Examples can include:

• Heavy conveyors
• Mining machinery
• High-inertia equipment
• Material-handling systems
• Certain processing machines

Heavy Duty selection becomes especially important where the machine frequently accelerates, encounters changing load conditions, or requires higher torque for starting and operation.

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9. Product Introduction

The 20G11BC2K1AN0NNNNN is essentially a large-scale electronic motor-control system.

It takes incoming AC electrical power and converts it into a controlled output for a large AC motor.

The drive controls motor speed by controlling the frequency and voltage supplied to the motor.

This provides substantially more flexibility than a simple fixed-speed starter.

The motor can accelerate smoothly.

The motor can operate at variable speed.

The motor can stop according to a controlled ramp.

The motor can respond automatically to process conditions.

The drive can communicate with a plant control system.

Operating conditions and faults can be monitored remotely.

For a large industrial motor, these capabilities can have a significant impact on equipment reliability, process control, and energy management.

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10. PowerFlex 755 Series Characteristics

The PowerFlex 755 platform is designed around flexible industrial motor control.

It supports a broad range of functions, including:

• Speed control
• Torque control
• Sensorless vector control
• Flux-oriented control
• V/Hz control
• Permanent-magnet motor control
• Process PID
• Feedback options
• Industrial communication
• Safety functions
• Advanced diagnostics
• I/O expansion
• Application-specific configuration

This flexibility allows the same basic drive platform to be used in many different industrial environments.

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11. Embedded EtherNet/IP

The 20G11BC2K1AN0NNNNN includes embedded EtherNet/IP communication.

This is particularly valuable in a modern automated plant.

A PLC, DCS, HMI, or SCADA system can communicate with the drive to exchange information such as:

For a large plant, this can significantly simplify centralized monitoring.

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12. Blank / No-HIM Configuration

The catalog configuration includes a blank / no-HIM arrangement.

HIM means Human Interface Module.

A HIM normally provides a local interface for:

• Parameter setup
• Local control
• Status monitoring
• Fault display
• Basic troubleshooting

The no-HIM configuration is useful when local operator control is not required.

Instead, the drive can be integrated into a centralized control architecture.

This type of arrangement is common in large automated plants where operators work through an HMI or SCADA system rather than standing directly beside the drive.

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13. AC Input With Precharge

The drive uses AC input with precharge.

Large variable frequency drives contain substantial DC-link capacitance.

When power is initially applied, the DC-link capacitors must charge.

If they were connected directly without controlled charging, the initial current could be extremely high.

The precharge system controls this initial charging process.

This is particularly important for a drive of this power class.

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14. DC Terminals

The model includes DC terminals.

The DC bus is an important part of the drive’s internal power architecture.

The DC terminals can also be useful in appropriate DC-bus system arrangements.

However, any external DC-bus connection must be evaluated based on the complete system design and applicable electrical requirements.

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15. Filtering

The drive is configured with filtering.

High-power variable frequency drives use high-speed semiconductor switching.

This switching can produce high-frequency electrical components.

Filtering can help manage electromagnetic interference.

Good EMC performance still depends on the complete installation.

Important factors include:

• Grounding
• Shielding
• Motor cable construction
• Cable routing
• Cable length
• Cabinet construction
• Network cable routing
• Proper bonding

The filter should therefore be considered one part of a complete EMC strategy.

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16. CM Jumper Removed

The AN0 configuration uses the CM jumper removed.

This is an important catalog-number detail.

Two PowerFlex 755 models may have identical voltage and current ratings but use different configuration suffixes because of differences in:

• CM jumper
• HIM
• Filtering
• Input configuration
• Mechanical arrangement
• Options

For replacement work, the complete catalog number should always be compared.

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17. Dynamic Braking

The 20G11BC2K1AN0NNNNN does not include a dynamic braking transistor.

This is important when the connected motor has a large amount of mechanical inertia.

During deceleration, the motor can temporarily act as a generator.

Energy can return to the drive’s DC bus.

If the machine is stopped very quickly, DC-bus voltage can rise significantly.

Depending on the application, the system designer may need to consider:

• Dynamic braking equipment
• Regenerative braking
• Longer deceleration times
• Mechanical braking
• Other energy-dissipation methods

This is especially important for large conveyors, fans with substantial inertia, and heavy rotating equipment.

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18. Mechanical Dimensions

The Frame 10 IP20 MCC-style configuration has substantially larger physical dimensions than smaller drive frames.

A useful approximate reference is:

The 2,453 mm height is an important consideration for installation.

A ceiling height of only slightly above the equipment height may not provide sufficient clearance for lifting, ventilation, cable work, or maintenance.

The 1,800 mm width is also substantial.

This model should therefore be planned as major electrical-room equipment rather than a compact drive.

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19. Weight and Transportation

The approximate weight for the IP20 Frame 10 MCC-style configuration is 1,869 kg.

That is approximately 1.87 metric tonnes.

A larger configuration incorporating additional drive and option cabinets can reach approximately 3,435 kg, or roughly 3.44 tonnes.

Therefore, transportation and installation require proper planning.

Important considerations include:

• Forklift capacity
• Crane capacity
• Lifting equipment
• Floor loading
• Door dimensions
• Access routes
• Elevator capacity
• Installation position
• Cabinet foundation
• Service clearance
• Final assembled weight

The 1,869 kg figure should be treated as an approximate equipment weight, not a universal shipping weight.

Shipping packaging can increase the total transportation weight.

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20. Main Product Applications

20.1 Large Pump Systems

The 20G11BC2K1AN0NNNNN is highly suitable for large pumping systems.

Possible applications include:

• Water treatment
• Industrial water circulation
• Cooling-water systems
• Process-water systems
• Wastewater
• Large irrigation systems
• Mining dewatering
• Utility pumping

The drive can adjust pump speed according to actual process demand.

This can improve flow and pressure control while potentially reducing energy consumption.

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21. Large Fans

Large fans can require very high motor power.

Potential applications include:

• Furnace fans
• Exhaust fans
• Industrial ventilation
• Cooling fans
• Process-air systems
• Combustion-air systems
• Large air-handling systems

Variable-speed control allows airflow to be adjusted to actual process requirements.

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22. Large Blowers

Industrial blowers often operate continuously and can require large motors.

The drive can regulate blower speed based on:

• Air pressure
• Airflow
• Process demand
• Temperature
• Production conditions

PID control can also be used where the blower needs to maintain a target process variable.

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23. Mining Applications

The high-current capacity makes this model particularly suitable for large mining installations.

Possible applications include:

• Long conveyors
• Ore-handling systems
• Dewatering pumps
• Large ventilation fans
• Material-transfer systems
• Mineral-processing machinery

Mining equipment often experiences changing mechanical loads.

The drive can provide controlled acceleration and variable speed, helping to reduce mechanical shock.

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24. Conveyor Systems

Large conveyors can be very demanding applications.

A conveyor may contain:

• A large belt
• Multiple pulleys
• Gearboxes
• Couplings
• Large rotating components
• A substantial material load

Starting this equipment abruptly can create high mechanical stress.

The drive can provide a controlled acceleration profile.

Potential benefits include:

• Reduced belt shock
• Reduced gearbox stress
• Reduced coupling stress
• Reduced shaft stress
• Smoother material movement
• Controlled stopping
• Adjustable operating speed

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25. Cement Industry Applications

Large cement plants use many high-power motors.

Potential applications include:

• Large process fans
• Cooling fans
• Pumps
• Conveyors
• Material-handling systems
• Process machinery
• Large auxiliary equipment

The 1,400 kW Light Duty rating makes this model appropriate for very large motor systems in this type of industrial environment.

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26. Mineral Processing

Mineral-processing plants often have substantial electrical loads.

Potential applications include:

• Large pumps
• Conveyors
• Fans
• Blowers
• Material handling
• Process equipment

The drive’s high current rating allows it to control very large motors while the communication system allows integration into the plant automation system.

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27. Metals and Heavy Industry

Heavy industrial facilities can require very large AC motors.

The model can be considered for:

• Process fans
• Cooling pumps
• Material handling
• Large process machines
• Ventilation
• Auxiliary systems
• Large rotating equipment

The ability to communicate operating data to a control system is particularly useful in facilities where many large drives operate simultaneously.

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28. Product Advantages

28.1 Extremely High Current Capability

The 2,150 A output rating is the most important advantage.

This gives the model enough capacity for very large industrial motors.

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28.2 Up to 1,400 kW Light Duty

The 1,400 kW Light Duty rating makes this a very powerful drive.

It is appropriate for large variable-torque systems and other applications where the load does not demand the highest overload performance.

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28.3 1,250 kW Normal Duty

The 1,250 kW Normal Duty rating provides substantial continuous-duty capability.

This is useful for large industrial machines that operate for long periods.

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28.4 1,000 kW Heavy Duty

The 1,000 kW Heavy Duty rating provides a strong option for applications requiring greater torque and overload capability.

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28.5 Frame 10 Architecture

Frame 10 construction provides a physical and electrical architecture designed for very high-power applications.

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28.6 Embedded EtherNet/IP

The embedded network interface allows the drive to participate directly in the automation system.

This can reduce the amount of separate hardwired monitoring required.

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28.7 PID Control

PID functionality makes the drive particularly useful for process applications.

Pumps, fans, and blowers can automatically adjust their speed in response to process feedback.

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28.8 Advanced Diagnostics

Large motors are often critical to production.

The drive’s diagnostic capabilities can provide useful information for troubleshooting and preventive maintenance.

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28.9 Centralized Control

The no-HIM configuration is suitable for systems where operators use a centralized HMI or SCADA platform.

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28.10 Flexible Industrial Architecture

The PowerFlex 755 platform can support different control methods, feedback arrangements, I/O configurations, communication options, and safety architectures.

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29. Five Recommended Models From the Same Series

The following models are useful alternatives or comparison points within the same PowerFlex 755 family.

The exact mechanical weight can vary depending on options and cabinet configuration, so the figures above should be treated as approximate frame-level references.

The 20G11BC2K1JN0NNNNN is especially interesting because it is electrically very close to the target model while using a different catalog configuration.

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30. Five Same-Series Model Comparison

This comparison shows the progression of the high-power 400 VAC models.

The 20G11BC2K1AN0NNNNN is clearly positioned above the 1,590 A model.

Its 2,150 A output capability provides a substantial increase in motor-current capacity.

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31. Five Same-Brand Popular / Related Models

For a broader product comparison, the following models are useful choices from the same brand and related PowerFlex industrial drive range.

The first three models are particularly close to the target model because they are 400 VAC high-power configurations.

The 480 VAC and 600 VAC models become more relevant when the plant’s motor voltage is different.

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32. Comparison With the 20G11BC1K6 Model

The 20G11BC1K6AN0NNNNN is one of the closest lower-capacity alternatives.

The main difference is electrical capacity.

The 20G11BC2K1AN0NNNNN provides approximately 560 A more output current than the 1,590 A model.

That is a substantial increase.

For a motor application approaching the current limit of the 20G11BC1K6, the 20G11BC2K1 may provide useful additional capacity.

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33. Comparison With the 20G11BC1K5 Model

The target model is considerably larger electrically and mechanically.

The 1,480 A model is more appropriate when the motor current requirement is lower.

The 2,150 A model becomes attractive when the motor is substantially larger.

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34. Application Selection Guide

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35. Energy-Saving Potential

One major reason for using a variable frequency drive on large pumps and fans is the possibility of reducing energy consumption.

A large motor operating continuously at full speed can consume substantial power even when the process does not require maximum output.

Variable-speed operation allows the motor to follow actual demand.

For suitable centrifugal loads, reducing speed can produce a disproportionately large reduction in required mechanical power.

This is why high-power VFDs can be valuable in:

• Water systems
• Cooling systems
• Industrial ventilation
• Process-air systems
• Large pumping stations
• Large fan systems

The actual savings depend on the load curve, operating schedule, process requirements, and system design.

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36. Process Control Capability

The drive can participate in closed-loop process control.

A typical example is a pressure-controlled pumping system.

The basic sequence can be:

Pressure sensor → controller → drive → motor → pump → process

If pressure falls below the target, the drive can increase motor speed.

If pressure rises above the target, the drive can reduce motor speed.

This approach can provide smoother process regulation than simply switching a motor fully on or fully off.

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37. Maintenance Advantages

The drive provides diagnostic capabilities that are useful for large industrial equipment.

Maintenance personnel can monitor information such as:

• Drive status
• Motor current
• Operating condition
• Faults
• Warnings
• Communication status
• Other operating parameters

This can help maintenance teams identify abnormal conditions before they develop into larger production problems.

For a motor rated in the megawatt class, early detection can be particularly valuable because an unexpected shutdown can have a significant operational impact.

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38. Cooling and Thermal Management

A drive capable of controlling a motor in the 1,000–1,400 kW range must be designed with serious attention to heat removal.

The model uses forced-air cooling.

The electrical room should therefore have adequate ventilation and heat-management capacity.

Important considerations include:

• Ambient temperature
• Airflow
• Cooling-fan operation
• Dust levels
• Cabinet ventilation
• Room ventilation
• Service clearance
• Installation altitude

If cooling performance is inadequate, semiconductor and electronic-component temperatures can increase.

This can affect reliability and service life.

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39. Installation Requirements

The physical size of the Frame 10 configuration should be considered early in the project.

The approximate dimensions are:

Height: 2,453 mm

Width: 1,800 mm

Depth: 600 or 800 mm

The installation area should also provide additional clearance for:

• Cable entry
• Cable bending radius
• Ventilation
• Maintenance
• Inspection
• Lifting
• Door movement
• Component replacement

The dimensions of the drive itself should not be treated as the entire required installation footprint.

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40. Transportation Considerations

At approximately 1,869 kg, the standard Frame 10 MCC-style configuration is heavy equipment.

A complete configuration with additional option cabinets can reach approximately 3,435 kg.

Therefore, transportation planning should include:

• Certified lifting equipment
• Adequate forklift capacity
• Proper lifting points
• Suitable floor loading
• Access route evaluation
• Door clearance
• Loading and unloading equipment
• Foundation requirements

The shipping package may weigh more than the bare equipment.

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41. Environmental and Protection Characteristics

An IP20 / Type 1 drive should not be treated as a weatherproof outdoor product.

If the installation environment contains high humidity, conductive dust, corrosive gases, water spray, or other harsh conditions, additional environmental protection may be necessary.

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42. Complete Parameter Summary

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43. Key Advantages at a Glance

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44. Final Product Assessment

The 20G11BC2K1AN0NNNNN is a very large PowerFlex 755 high-power AC drive designed for applications where extremely high motor current and power capacity are required.

Its 2,150 A output current is the defining feature of the model.

With a published 1,400 kW Light Duty, 1,250 kW Normal Duty, and 1,000 kW Heavy Duty rating, it is positioned above the 1,590 A class and is intended for some of the largest motor applications within this 400 VAC product group.

The Frame 10 construction is appropriate for this power level.

The approximate 2,453 mm height, 1,800 mm width, and 600/800 mm depth make it a substantial piece of industrial electrical equipment.

The approximate 1,869 kg weight for the standard IP20 MCC-style configuration should also be taken seriously when planning transportation, installation, floor loading, and maintenance access.

For systems with additional drive and option cabinets, the total equipment weight can increase to approximately 3,435 kg.

From an electrical perspective, the drive is particularly attractive for applications requiring very large motor current.

From a control perspective, the embedded EtherNet/IP capability allows the drive to become part of a larger automation system.

From a process-control perspective, PID capability makes it suitable for large pumps, fans, and blowers.

From a mechanical perspective, controlled acceleration can be valuable for conveyors and other high-inertia machines.

From a maintenance perspective, diagnostic and network capabilities can make operating-condition monitoring easier.

The main application areas are large pumping stations, cooling-water systems, industrial fans, large blowers, mining conveyors, material-handling systems, cement plants, mineral-processing facilities, metals-processing equipment, and other heavy industrial machinery.

The main engineering issue to consider is not simply whether the motor is “under 1,400 kW.”

The correct selection should consider motor full-load current, voltage, duty classification, overload requirements, acceleration torque, deceleration requirements, inertia, braking energy, ambient temperature, cooling, installation altitude, cable sizing, electrical protection, and mechanical installation requirements.

For a variable-torque pump or fan, the high Light Duty rating can be particularly attractive.

For a demanding conveyor or other high-torque application, the 1,000 kW Heavy Duty rating should receive more attention than the 1,400 kW Light Duty figure.

The absence of an integrated dynamic braking transistor is also important for high-inertia equipment that needs rapid stopping.

Overall, the 20G11BC2K1AN0NNNNN is best viewed as a megawatt-class, very-high-current industrial motor-control solution.

Its combination of 2,150 A output current, up to 1,400 kW Light Duty power, 400 VAC three-phase operation, Frame 10 construction, forced-air cooling, embedded EtherNet/IP, PID capability, integrated filtering, and MCC-style mechanical construction makes it particularly well suited to large and demanding industrial installations.