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20G11LC1K2AN0NNNNN — Detailed Product Information, Technical Parameters, Applications, Advantages and Related Models

The 20G11LC1K2AN0NNNNN is a high-power industrial AC variable frequency drive designed for large three-phase motor applications.

This model is part of the PowerFlex 755 series and is intended for installations where a high-capacity drive is required for pumps, fans, conveyors, compressors, process machinery and other large rotating equipment.

The following information is presented in English, without web links or external source references, and focuses only on the requested product information.

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1. Product Identification

The model is positioned one capacity level above the 20G11LC1K1 configuration and is intended for larger motor applications requiring greater current and power capacity.

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2. Product Series

The 20G11LC1K2AN0NNNNN belongs to the PowerFlex 755 series.

The PowerFlex 755 platform is designed for demanding industrial applications where precise motor-speed control, high power, process integration and reliable operation are important.

The series is commonly associated with applications involving large motors and centralized industrial drive systems.

The Frame 9 construction used by this model is intended for high-power installations rather than compact machine cabinets.

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3. Product Introduction

The 20G11LC1K2AN0NNNNN is a large-frame variable frequency drive used to control the speed and operating characteristics of three-phase AC motors.

Instead of supplying the motor with a fixed-frequency electrical supply, the drive controls the output frequency and voltage.

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

For a large pump, for example, the drive can adjust motor speed according to the required flow.

For a large fan, the speed can be adjusted according to ventilation demand.

For a conveyor, acceleration and deceleration can be controlled more smoothly.

For process machinery, the motor can operate at a speed appropriate for the production condition.

This type of control is particularly valuable when the motor is large and the process cannot be efficiently managed using simple fixed-speed operation.

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4. Main Technical Parameters

The exact mechanical dimensions and total weight should be treated as configuration-dependent because large Frame 9 drive systems can be supplied in different cabinet arrangements.

For engineering drawings, lifting calculations and transportation planning, the final configured equipment data should be used.

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5. Electrical Characteristics

The most important electrical characteristic of this model is its high current capacity.

The drive is designed around the 400 VAC class and approximately 1175 A current capacity.

When selecting a drive for a large motor, current should be treated as one of the most important sizing factors.

The motor’s nameplate current, rather than only its nominal kW rating, should be compared with the drive rating.

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6. Duty Ratings

The drive can be considered for different applications depending on the required duty.

The difference between these ratings is important.

A large centrifugal fan may have very different operating requirements from a conveyor carrying heavy material.

Similarly, a compressor or process machine may have substantially different acceleration and overload requirements.

The correct drive rating should therefore be selected according to the actual load profile.

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7. Physical Dimensions

The model uses a large Frame 9 construction.

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

The 800 mm value represents the cabinet-depth class.

It should not be treated as the complete height × width × depth measurement.

The exact overall dimensions depend on the final equipment configuration.

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8. Weight Information

Because this is a large high-power packaged drive, the final weight depends on the actual cabinet arrangement and installed components.

For this reason, it would be misleading to provide an invented single kilogram figure.

For transportation, crane selection, forklift selection and floor-loading calculations, the final configured weight should always be used.

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9. Enclosure

The model is associated with a Type 1 / IP20 enclosure arrangement.

This type of enclosure is appropriate for a controlled electrical installation.

It should not be treated as a sealed outdoor enclosure.

If the drive is installed in a dusty, humid, corrosive or otherwise aggressive environment, the complete installation should provide appropriate environmental protection.

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10. Cooling System

The drive uses forced-air cooling.

A high-power drive produces substantial heat during operation.

The cooling system therefore plays an important role in maintaining stable operating temperatures.

The installation should provide:

• Adequate ventilation
• Unrestricted airflow
• Suitable cabinet clearances
• Appropriate ambient temperature
• Clean cooling paths
• Regular fan inspection
• Proper exhaust-air management

Hot exhaust air should not be allowed to circulate back into the drive’s cooling intake.

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11. Product Applications

11.1 Large Pump Systems

Large pumps are one of the strongest applications for this drive.

Typical uses include:

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

Variable-speed control allows the pump to respond to changing flow and pressure requirements.

Instead of operating continuously at full speed, the motor can operate closer to the speed required by the process.

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12. Cooling-Water Applications

Large manufacturing facilities often use substantial quantities of cooling water.

The drive can be used for large cooling pumps that supply:

• Heat exchangers
• Production equipment
• Process machinery
• Cooling towers
• Central cooling systems
• Industrial refrigeration-related circulation systems

The ability to adjust pump speed can make the system more flexible when cooling demand changes.

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13. Large Industrial Fans

The model is also well suited to large fan applications.

Potential applications include:

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

Variable-speed operation allows airflow to be adjusted without requiring the motor to run continuously at maximum speed.

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14. Large Blowers

Industrial blowers can require substantial motor power.

Applications can include:

• Process-air systems
• Industrial ventilation
• Air supply
• Combustion systems
• Dust-control systems
• Process equipment

The drive can provide controlled motor speed and controlled acceleration.

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15. Conveyor Applications

Large conveyors can require several hundred kilowatts of motor power.

Typical applications include:

• Mining conveyors
• Bulk-material conveyors
• Cement conveyors
• Aggregate conveyors
• Port material handling
• Industrial production conveyors

One of the main benefits in conveyor applications is controlled acceleration.

A controlled acceleration profile can reduce sudden mechanical stress on belts, gearboxes, couplings and shafts.

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16. Mining Applications

The high current capacity makes this drive suitable for large mining installations.

Possible applications include:

• Long conveyors
• Large dewatering pumps
• Ventilation fans
• Material handling
• Processing machinery
• Large auxiliary equipment

Mining equipment can operate under severe conditions, so environmental protection and installation design must be considered separately from the electrical rating.

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17. Cement and Aggregate Applications

Large cement and aggregate plants use many high-power motors.

The drive can be considered for:

• Large process fans
• Conveyors
• Pumps
• Material-handling equipment
• Dust-collection systems
• Cooling systems
• Auxiliary process machinery

Variable-speed control can allow production equipment to respond more effectively to changes in production demand.

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18. Compressor Applications

Large industrial compressors may also use high-power motors.

Potential benefits of variable-speed operation include:

• Adjustable compressor output
• Controlled acceleration
• Flexible production
• Reduced mechanical shock
• Better matching of motor speed to demand

The actual compressor torque and acceleration profile should be evaluated before final drive selection.

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19. Heavy Industrial Machinery

The model can also be considered for large rotating equipment used in heavy industry.

Potential applications include:

• Process machinery
• Large rotating equipment
• Cooling systems
• Material handling
• Industrial ventilation
• Large pumps
• Large fans
• Auxiliary machinery

Its Frame 9 construction makes it more suitable for centralized electrical installations than compact machine-mounted drives.

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20. Main Product Advantages

High Current Capacity

The approximately 1175 A current class is the primary advantage of the model.

It provides the capacity required for very large motors operating on 400 VAC systems.

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High Power Capacity

The model provides approximately:

• 800 kW light-duty capacity
• 710 kW normal-duty capacity
• 560 kW heavy-duty capacity

This places it firmly in the high-power industrial drive category.

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Large Frame 9 Construction

Frame 9 provides a large physical platform suitable for high-power electrical equipment.

The cabinet arrangement also allows the drive to be incorporated into centralized electrical rooms and MCC-style installations.

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Variable-Speed Control

The drive allows motor speed to be controlled according to process requirements.

This is particularly valuable in:

• Pumping
• Ventilation
• Material handling
• Process machinery
• Cooling systems

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Controlled Starting

Large motors can generate significant mechanical and electrical stress during direct starting.

A variable frequency drive allows controlled acceleration.

This can improve the starting characteristics of large machines.

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Industrial Network Integration

The PowerFlex 755 platform can be incorporated into an industrial automation system.

This allows operators and control systems to monitor and control drive operation from a centralized location.

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21. Advantages for Pump Systems

For centrifugal pumps, the drive can provide precise speed adjustment.

This can help maintain desired:

• Flow
• Pressure
• Process conditions
• System response

The actual energy savings depend on the hydraulic system and operating profile, but variable-speed operation can be particularly effective in systems with frequently changing flow requirements.

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22. Advantages for Fan Systems

Fans frequently operate at different airflow requirements.

Using a variable frequency drive allows fan speed to follow actual demand.

Benefits can include:

• Flexible airflow
• Smooth startup
• Improved process control
• Reduced unnecessary full-speed operation
• Adjustable ventilation

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23. Advantages for Conveyors

Conveyor systems benefit from controlled acceleration and deceleration.

The drive can reduce sudden torque changes.

This can help protect:

• Conveyor belts
• Gearboxes
• Bearings
• Couplings
• Shafts
• Pulleys

Controlled acceleration can be particularly valuable for long conveyors and heavily loaded conveyor systems.

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24. Advantages for Industrial Processes

For large process machines, the drive can become part of the overall control system.

Typical control functions can include:

This approach is useful in plants where many motors are controlled from a centralized automation system.

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25. Five Recommended Models from the Same Series

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

The first two models are useful where slightly lower current capacity is sufficient.

The fourth and fifth models are more appropriate where the motor requires greater current capacity.

The target 20G11LC1K2AN0NNNNN sits between these capacity levels and is therefore useful for large motors requiring more capacity than the K0/K1 configurations.

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26. Same-Series Comparison

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27. Five Related Models Across the Same Product Family

The first three are the closest electrical alternatives because they share the 400 VAC class.

The 480 VAC and 690 VAC versions are useful when the plant distribution system and motor voltage belong to those voltage classes.

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28. Five Recommended Popular Models from the Same Brand

These models provide useful alternatives when comparing high-power drive configurations.

The 20G11LC1K1AN0NNNNN is a slightly smaller 400 VAC alternative.

The 20G11LC1K5AN0NNNNN provides greater 400 VAC capacity.

The 690 VAC models are intended for a different motor and plant-voltage class and therefore should not be considered direct drop-in replacements for a 400 VAC drive.

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29. Application Comparison Table

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30. Installation Considerations

The physical size of this model should be considered during the early stages of plant design.

The cabinet depth is approximately 800 mm, but sufficient additional space should be provided for:

• Cable installation
• Front access
• Maintenance
• Ventilation
• Component replacement
• Inspection
• Safe electrical work

The actual cabinet width and height depend on the final configuration.

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31. Electrical Installation Considerations

A drive with a current rating of approximately 1175 A requires substantial electrical infrastructure.

The installation should consider:

• Incoming power protection
• Disconnecting equipment
• Appropriate conductor sizing
• Grounding
• Motor cable arrangement
• Short-circuit capability
• Harmonic considerations
• EMC considerations
• Cabinet ventilation
• Motor protection
• Control-system integration

The incoming electrical system should be engineered specifically for the actual drive installation.

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32. Maintenance Requirements

Regular maintenance is important for a high-power drive.

A high-power drive should be treated as a major plant asset rather than simply another electrical component.

Preventive maintenance can help identify cooling, electrical or communication problems before they become major failures.

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33. Product Selection Considerations

Before selecting the 20G11LC1K2AN0NNNNN, the following should be confirmed.

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34. Why Choose the 20G11LC1K2AN0NNNNN?

The model is particularly attractive when the motor is too large for lower-current configurations but does not require the very largest available 400 VAC drive.

Its approximately 1175 A current class provides a substantial increase over smaller configurations.

The approximately 710 kW normal-duty rating makes it suitable for large industrial process applications.

The approximately 560 kW heavy-duty rating provides a useful capacity range for applications with more demanding load conditions.

The Frame 9 construction also makes it suitable for centralized drive-room installations.

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35. Product Strengths at a Glance

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36. Recommended Model Selection by Motor Size

These are comparison recommendations rather than automatic replacement recommendations.

The motor nameplate current and actual load duty should always be checked before substitution.

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37. Final Detailed Specification Table

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38. Overall Product Evaluation

The 20G11LC1K2AN0NNNNN is a high-capacity industrial AC drive designed for large three-phase motors.

Its approximately 1175 A current capability makes it suitable for applications requiring substantially more current than smaller Frame 9 configurations.

The approximately 800 kW light-duty, 710 kW normal-duty and 560 kW heavy-duty power classes provide flexibility for different industrial load types.

For large centrifugal pumps and fans, the drive can provide adjustable motor speed and more flexible process control.

For conveyors and material-handling systems, controlled acceleration can reduce mechanical stress and improve startup behavior.

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

The PowerFlex 755 architecture also makes the drive suitable for centralized industrial automation systems.

The Frame 9, forced-air-cooled construction is appropriate for high-power installations, while the 800 mm deep MCC-style cabinet provides a practical arrangement for large electrical rooms.

The Type 1 / IP20 enclosure should be installed in an appropriate controlled environment rather than being treated as a sealed outdoor enclosure.

From an engineering perspective, the most important point is that the drive should be selected according to the actual motor current and load duty.

The motor’s nominal kW value is only one part of the selection process.

Motor voltage, rated current, overload requirements, load characteristics, acceleration, deceleration, braking, ambient conditions, cooling and physical installation space all need to be considered.

The 20G11LC1K2AN0NNNNN is therefore best viewed as a high-power solution for large 400 VAC industrial motor systems where substantial current capacity and variable-speed control are required.

For a slightly smaller application, the 20G11LC1K0AN0NNNNN or 20G11LC1K1AN0NNNNN may be more appropriate.

For larger 400 VAC motors, the 20G11LC1K4AN0NNNNN and 20G11LC1K5AN0NNNNN provide higher-capacity alternatives.

For plants using 480 VAC or 690 VAC motors, the corresponding higher-voltage configurations should be evaluated instead.

For the physical installation, the 800 mm cabinet depth should be included in the layout, while exact width, height and weight in kg should be confirmed from the final configured equipment before transportation, lifting, foundation and floor-loading calculations are performed.