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20G11LC1K1AN0NNNNN — Detailed Product Introduction, Technical Parameters, Applications, Advantages and Related Models

1. Product Overview

The 20G11LC1K1AN0NNNNN is a high-power AC variable frequency drive designed for large industrial motor-control applications.

It belongs to the PowerFlex 755 product series and is configured as an air-cooled, three-phase AC drive for high-power industrial systems.

This model has a rated current of approximately 1090 A and is designed for the 400 VAC class. Its published duty ratings are approximately 710 kW for light-duty operation, 630 kW for normal-duty operation, and 500 kW for heavy-duty operation.

The product uses a Frame 9 high-power construction and an 800 mm deep MCC-style Type 1 / IP20 enclosure configuration. It is therefore intended for substantial industrial electrical installations rather than small machine-control cabinets.

The model also incorporates embedded EtherNet/IP, allowing the drive to communicate with a larger industrial automation system.

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2. Brand and Product Series

The PowerFlex 755 series is positioned for demanding motor applications requiring considerably more power and current than conventional compact variable frequency drives.

The 20G11LC1K1AN0NNNNN is particularly suitable for large motors used in pumps, fans, conveyors, compressors, process machinery and other heavy industrial equipment.

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3. Complete Technical Parameters

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4. Electrical Rating Details

The most important electrical specifications of the 20G11LC1K1AN0NNNNN are its 400 VAC voltage class, three-phase input and approximately 1090 A current rating.

The three duty ratings are important because the actual motor capacity depends on the operating characteristics of the machine.

A pump or fan operating with a variable-torque load may have a different allowable rating from a conveyor or another application requiring greater overload capability.

For this reason, motor selection should be based on the motor nameplate current, duty requirements, overload requirements and actual mechanical load rather than relying only on the nominal motor kW.

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5. Product Introduction

The 20G11LC1K1AN0NNNNN is a high-capacity industrial variable frequency drive intended to control large AC motors.

Its primary function is to regulate motor speed by controlling the electrical frequency and voltage supplied to the motor.

This allows a large motor to operate at a speed appropriate for the actual process requirement.

In a conventional fixed-speed installation, the motor generally operates at or close to its rated speed regardless of changing process requirements.

With variable-speed control, the motor can operate at different speeds during different production conditions.

This is particularly useful in pumping, ventilation, conveying and process applications where the required output changes over time.

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6. Main Product Features

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7. Physical Dimensions

The physical configuration is particularly important for this model because it is a large Frame 9 drive.

The catalog configuration is associated with an 800 mm deep MCC-style cabinet.

The 800 mm value should be understood as the cabinet-depth specification for this configuration.

It should not be interpreted as the complete cabinet dimensions.

The overall width and height depend on the detailed mechanical arrangement and should be confirmed before preparing the final installation layout.

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8. Weight Information

The exact weight of a high-power packaged drive can vary depending on the final mechanical configuration.

For this reason, the safest technical description is:

Weight: Configuration-dependent kg.

It is not advisable to insert an estimated kilogram figure into a technical document when the exact mechanical configuration has not been established.

For purchasing, transportation and installation purposes, the final equipment documentation should always take priority.

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9. Product Applications

9.1 Large Pump Systems

Large pumps are one of the most suitable applications for the PowerFlex 755 platform.

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

Typical applications include:

• Water treatment
• Wastewater treatment
• Industrial water circulation
• Cooling-water systems
• Process-water systems
• Large pumping stations
• Chemical process pumps
• Utility water systems

A variable-speed pump can respond to changes in process demand instead of continuously operating at maximum speed.

This can improve process control and can reduce unnecessary energy consumption during periods when full pump capacity is not required.

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10. Industrial Cooling Systems

Large factories frequently require substantial cooling-water circulation.

Cooling demand can change according to production conditions.

A variable frequency drive allows the motor speed to follow the actual cooling requirement.

Potential applications include:

• Industrial cooling pumps
• Heat-exchanger circulation
• Process cooling systems
• Central cooling-water systems
• Equipment cooling

The high current capacity of the 20G11LC1K1AN0NNNNN makes it suitable for large cooling-water motors.

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11. Large Fans and Blowers

Industrial ventilation systems can contain very large fan motors.

Typical applications include:

• Furnace ventilation
• Process exhaust
• Factory ventilation
• Dust collection
• Combustion air
• Cooling towers
• Large air-handling systems
• Industrial extraction systems

The drive can regulate fan speed according to airflow demand.

This allows the ventilation system to respond to changes in production conditions.

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12. Conveyor Systems

Large conveyors can require substantial motor power, particularly in mining, cement, aggregate and material-handling applications.

The drive can provide controlled acceleration and deceleration.

This can reduce mechanical stress on:

• Belts
• Gearboxes
• Couplings
• Shafts
• Bearings
• Pulleys
• Mechanical structures

Controlled acceleration is especially useful when starting a conveyor with a large material load.

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13. Mining Applications

Large mining operations contain many high-power motor systems.

Potential applications include:

• Long conveyors
• Material handling
• Mine ventilation
• Large pumps
• Processing equipment
• Crushing systems
• Auxiliary machinery
• Dewatering systems

The high current capability and large Frame 9 construction make the drive appropriate for centralized industrial electrical installations.

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14. Cement and Aggregate Applications

Cement plants and aggregate-processing facilities commonly use large motors.

Possible applications include:

• Crushers
• Conveyors
• Large process fans
• Dust-collection systems
• Cooling pumps
• Material-handling systems
• Process equipment
• Large ventilation systems

Variable-speed operation can help match machine output to production requirements.

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15. Compressor Applications

Large industrial compressors can require several hundred kilowatts of motor power.

A variable frequency drive can regulate compressor speed according to system demand.

Potential benefits include:

• Better process control
• Adjustable operating speed
• Controlled acceleration
• Reduced mechanical shock
• Flexible production operation

Potential applications include industrial air systems, process-gas equipment and large utility systems.

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16. Steel and Heavy Manufacturing

Heavy manufacturing plants use large motors throughout their production processes.

The drive can be considered for:

• Large pumps
• Process fans
• Conveyors
• Cooling systems
• Material handling
• Auxiliary machinery
• Ventilation
• Process equipment

The ability to combine high-power motor control with industrial networking is useful in centralized production facilities.

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17. Advantages of the Product

17.1 High Current Capacity

The approximately 1090 A current rating is one of the main advantages of the model.

It allows the drive to control large industrial motors that would be beyond the practical range of smaller drive platforms.

This makes the model appropriate for large-scale process equipment.

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18. High Power Rating

The drive provides different power ratings according to the operating duty.

This gives engineers greater flexibility when matching the drive to different types of industrial loads.

The distinction between duty classifications is important because different machines place different thermal and overload demands on the drive.

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19. 400 VAC Industrial Architecture

The 400 VAC configuration is suitable for industrial power systems using the 400 V class.

This makes the model appropriate for large motors commonly used in industrial plants.

When selecting the drive, the following should be matched:

• Motor voltage
• Motor current
• Motor frequency
• Motor power
• Duty requirement
• Plant supply voltage
• Starting and stopping requirements

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20. Embedded EtherNet/IP

The integrated EtherNet/IP capability allows the drive to communicate with an industrial control system.

Typical information exchanged can include:

• Speed command
• Speed feedback
• Current
• Status
• Fault information
• Warning information
• Control commands
• Diagnostic information

This makes the drive suitable for centralized automation systems.

Instead of treating the drive as an isolated piece of equipment, the drive can become part of a complete machine or process-control architecture.

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21. Large Frame 9 Construction

The Frame 9 platform is designed for large industrial applications.

The physical size is appropriate for installations where substantial power electronics, cooling equipment and electrical connections are required.

Typical installation locations include:

• Motor-control centers
• Electrical rooms
• Process plants
• Large machinery rooms
• Centralized drive rooms

The large cabinet arrangement also needs to be considered during transportation and installation planning.

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22. Forced-Air Cooling

High-power semiconductor devices produce significant heat.

The drive therefore uses forced-air cooling to maintain suitable operating temperatures.

The installation should provide:

• Adequate ventilation
• Correct airflow
• Sufficient service clearance
• Suitable ambient temperature
• Clean cooling passages
• Regular fan inspection

Dust, restricted airflow or excessive ambient temperature can increase thermal stress.

For this reason, ventilation should be considered an important part of the overall drive installation.

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23. Type 1 / IP20 Enclosure

The drive configuration uses a Type 1 / IP20 enclosure class.

This means the equipment is intended for installation within a suitable industrial electrical environment.

It should not be treated as a fully sealed outdoor drive enclosure.

The installation location should provide suitable protection against excessive dust, moisture, corrosive substances and other environmental hazards.

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24. AC Input with Precharge

The model uses an AC input arrangement with precharge.

Precharge is important in high-power electrical equipment because it helps manage the charging process of the DC-link capacitors during energization.

This is particularly relevant at the power level of a Frame 9 drive.

The incoming electrical system should be designed in accordance with the drive’s required protection, disconnect and grounding arrangements.

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25. Maintenance Advantages

The PowerFlex 755 architecture is intended for industrial service environments.

Maintenance personnel can monitor operating conditions and investigate faults through the drive’s control and interface functions.

Routine maintenance can include:

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

The following five models are useful comparison options within the PowerFlex 755 family.

These models are particularly relevant when the application requires a 400 VAC high-power drive.

The 20G11LC1K0AN0NNNNN is a logical lower-capacity comparison, while the 20G11LC1K2AN0NNNNN, 20G11LC1K4AN0NNNNN and 20G11LC1K5AN0NNNNN provide progressively greater current and power capability.

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27. Comparison of the Same-Series Models

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28. Five Recommended Models from the Same Brand

For a broader product comparison, the following models are useful choices across different voltage and power ranges.

These five models cover several important high-power voltage classes.

The 400 VAC models are appropriate for 400 V industrial motor systems.

The 480 VAC model is intended for the corresponding 480 V class.

The 690 VAC model is appropriate for high-power motor systems using 690 V.

The voltage class must always match the actual motor and plant electrical system.

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29. 400 VAC Related Models

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30. 480 VAC Related Model

The 20G11LD1K0AN0NNNNN is a useful alternative when the plant electrical system uses the 480 VAC class.

This model should be considered when the motor and plant distribution system are based on 480 VAC rather than 400 VAC.

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31. 690 VAC Related Model

The 20G11LF765AN0NNNNN represents a higher-voltage configuration suitable for large 690 VAC industrial motor systems.

The higher system voltage allows very large motors to operate at substantial power while keeping current within a manageable range.

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32. Practical Advantages in Industrial Plants

The 20G11LC1K1AN0NNNNN provides several practical advantages.

High-Power Motor Control

The 1090 A rating allows the drive to control very large motors.

Flexible Duty Ratings

The 710/630/500 kW duty ratings provide different application possibilities.

Industrial Networking

Embedded EtherNet/IP makes integration into a plant automation system more straightforward.

Large Industrial Construction

Frame 9 construction is designed for high-power industrial installations.

Variable-Speed Operation

The drive can adjust motor speed to changing process conditions.

Controlled Acceleration

The drive can gradually accelerate large motors, reducing sudden mechanical loading.

Centralized Installation

The 800 mm MCC-style cabinet arrangement is appropriate for electrical-room installations.

Maintenance Access

The industrial drive architecture provides facilities for local monitoring and maintenance.

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33. Typical Application Selection

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34. Important Selection Considerations

Selecting a drive of this size requires more than comparing the motor’s rated kW.

The following parameters should be checked.

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35. Maintenance and Reliability

The reliability of a high-power drive depends not only on the electrical design but also on the installation environment and maintenance program.

The cooling system should be kept clean.

Ventilation should remain unobstructed.

Electrical connections should be periodically inspected.

The motor cable system should be maintained correctly.

The control network should be monitored for communication problems.

Drive fault history should be reviewed rather than simply resetting repeated faults.

Parameter settings should also be backed up so that a replacement drive can be commissioned more efficiently if necessary.

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36. Recommended Installation Environment

The drive is most appropriate for a controlled industrial electrical environment.

Suitable installation considerations include:

• Clean electrical rooms
• Motor-control centers
• Industrial process plants
• Centralized drive rooms
• Large machine electrical rooms
• Utility equipment rooms

The installation should avoid excessive moisture, corrosive atmospheres and uncontrolled dust accumulation unless the complete enclosure and environmental arrangement has been specifically designed for those conditions.

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37. Product Strengths at a Glance

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38. Final Technical Specification Table

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39. Overall Product Assessment

The 20G11LC1K1AN0NNNNN is a high-power industrial drive intended for applications where motor power and current requirements are beyond the range of conventional small and medium drives.

Its 1090 A current rating gives it substantial capacity for large 400 VAC motors.

The 710 kW light-duty, 630 kW normal-duty and 500 kW heavy-duty ratings allow the same general drive platform to be considered for different industrial load conditions.

The Frame 9 construction and 800 mm deep MCC-style configuration make it particularly appropriate for centralized industrial electrical rooms and large motor-control installations.

The integrated industrial communication capability provides a practical way to connect the drive to a plant automation system.

The forced-air cooling arrangement is appropriate for the high amount of heat generated by a drive operating at this power level, but the installation must provide suitable ventilation and maintenance access.

For pumps and fans, the drive can provide flexible speed control and process adjustment.

For conveyors and heavy machinery, controlled acceleration can reduce mechanical shock and provide smoother machine operation.

For compressors and process equipment, variable-speed control can allow motor operation to follow changing production requirements.

The most important point when selecting this model or one of the recommended alternatives is to match the drive to the motor current, voltage, duty classification and actual mechanical load.

The model should not be selected solely from the motor’s nominal kW rating.

For physical installation, the 800 mm depth should be incorporated into the cabinet and electrical-room layout, while the exact width, height and weight in kg should be taken from the final mechanical configuration before transportation, lifting, foundation or floor-loading calculations are performed.

Overall, the 20G11LC1K1AN0NNNNN is a strong choice for large-scale industrial motor control where high current, high power, variable-speed operation and integration with an industrial automation system are required.