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20G11LC1K6AN0NNNNN — Detailed Product Overview, Technical Parameters, Applications, Advantages and Related Models

The 20G11LC1K6AN0NNNNN is a high-power industrial AC variable frequency drive designed for large three-phase motor applications.

It belongs to the PowerFlex 755 series and is positioned in the high-current, high-power range of the family. The model is intended for applications where a large motor needs adjustable speed, controlled acceleration and deceleration, reliable process control, and integration with an industrial automation network.

The following description is written in a practical technical-product format and can be used for product catalogs, equipment descriptions, quotations, engineering documentation, purchasing references, or internal product comparisons.

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1. Basic Product Information

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2. Product Introduction

The 20G11LC1K6AN0NNNNN is a high-capacity variable frequency drive intended for controlling very large AC motors in industrial installations.

Its rated current is approximately 1,590 A, which places it in a very high-power application class.

The drive provides three main duty ratings:

• 1,000 kW Light Duty
• 900 kW Normal Duty
• 710 kW Heavy Duty

This makes the model particularly useful for large variable-speed equipment where motor speed needs to be adjusted according to changing production requirements.

Typical applications include large pumps, fans, blowers, conveyors, cooling equipment, water-treatment equipment, mining systems, cement equipment and other large process machines.

Rather than operating a large motor continuously at a fixed speed, the drive regulates motor speed and torque according to the required operating point.

This can provide more flexible process control and can help reduce unnecessary mechanical stress during starting and stopping.

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3. Brand and Product Series

The PowerFlex 755 series is designed for applications that require more than basic motor starting.

The series provides a platform for adjustable-speed motor control, industrial communication, process integration, diagnostics and different hardware configurations.

The 20G11LC1K6AN0NNNNN represents one of the larger current capacities within the 400 V class.

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4. Main Electrical Parameters

The 1,590 A current rating is one of the defining characteristics of this model.

When choosing the drive for a specific motor, the motor’s actual nameplate current should be treated as a primary selection parameter.

The nominal motor kW rating alone is not sufficient because different motor designs and different load conditions can produce different current requirements.

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5. Light-Duty Rating — 1,000 kW

The light-duty rating of this model is approximately 1,000 kW.

This is a substantial power level and makes the drive suitable for very large variable-torque applications.

Typical applications can include:

• Large centrifugal pumps
• Large cooling-water pumps
• Large industrial fans
• Cooling tower fans
• Process ventilation systems
• Large blowers
• Water circulation systems

Light-duty applications generally have less demanding overload requirements than heavy-duty constant-torque machinery.

For these applications, the 1,000 kW rating provides a high level of available motor capacity.

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6. Normal-Duty Rating — 900 kW

The normal-duty rating is approximately 900 kW.

This is an important rating for general industrial applications.

Potential applications include:

• Large pumps
• Large fans
• Industrial blowers
• Conveyors
• Cooling systems
• Water-treatment equipment
• Large material-handling systems
• Process machinery

For a normal-duty application, the 900 kW rating is generally the principal power figure to consider.

The motor nameplate current should still be checked against the applicable continuous current rating.

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7. Heavy-Duty Rating — 710 kW

The heavy-duty rating is approximately 710 kW.

This rating is important when the application has demanding mechanical characteristics.

Heavy-duty conditions can include:

• High starting torque
• High inertia
• Frequent acceleration
• Frequent deceleration
• Repeated overload
• Constant-torque loads
• Heavy material handling
• Difficult starting conditions

For such applications, the 710 kW heavy-duty rating should be considered rather than simply using the higher 900 kW or 1,000 kW figures.

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8. Detailed Technical Specification Table

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9. Dimensions

The mechanical configuration is identified as an 800 mm deep MCC-style drive.

This means that the 800 mm depth is an important engineering dimension when planning the installation.

The exact overall width and height should be determined from the mechanical configuration of the actual unit.

This is particularly important when the drive is installed inside an electrical room, motor-control center lineup or custom cabinet.

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10. Weight

Because this is a large Frame 9 high-current drive, the final physical weight can depend on the exact configuration and mechanical arrangement.

For this reason, it is preferable not to provide an estimated number and present it as an exact specification.

For structural calculations, transportation, lifting equipment and floor-loading calculations, the final configured equipment weight should be used.

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11. Cooling System

The drive uses forced-air cooling.

A drive rated at 1,590 A can generate significant heat during operation, particularly when operating close to its rated load.

The installation should therefore provide sufficient airflow.

Important considerations include:

• Adequate ventilation
• Correct air direction
• Cooling-fan operation
• Clean air passages
• Appropriate ambient temperature
• Adequate cabinet clearance
• Prevention of hot-air recirculation
• Periodic inspection of cooling components

Poor ventilation can cause unnecessary thermal stress and can reduce the reliability of high-power electrical components.

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12. AC Input with Precharge

The model uses an AC input with precharge configuration.

Precharge is particularly important in high-power drive systems because the DC-link capacitors require controlled charging when the equipment is energized.

This configuration helps manage the initial electrical charging process.

The drive also provides DC terminals as part of its configuration.

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13. Communication and Automation

The PowerFlex 755 platform supports embedded EtherNet/IP communication.

This makes the drive suitable for integration into an industrial automation network.

A large drive can therefore be connected to the plant control system rather than operating as an isolated piece of equipment.

Typical information can include:

For large automated facilities, this communication capability can simplify control-system integration.

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14. Product Applications

14.1 Large Pumping Systems

The model is well suited for evaluation in large pumping systems.

Typical applications include:

• Industrial water pumps
• Cooling-water pumps
• Process-water pumps
• Wastewater pumps
• Circulation pumps
• Water-transfer systems
• Utility pumping

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

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14.2 Large Cooling Systems

Large factories often use high-power motors for cooling systems.

Potential applications include:

• Cooling towers
• Cooling-water pumps
• Heat-exchanger circulation
• Industrial cooling loops
• Process cooling
• Utility cooling systems

The motor speed can be adjusted according to the actual cooling requirement.

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14.3 Large Industrial Fans

Large fans are common in process industries.

Applications include:

• Furnace ventilation
• Industrial exhaust
• Process ventilation
• Cooling fans
• Combustion-air systems
• Dust-control systems
• Air-handling equipment

The drive can provide variable-speed control rather than requiring the fan to run continuously at a fixed speed.

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14.4 Large Blowers

The drive can also be considered for large blower applications.

Typical examples include:

• Aeration blowers
• Process-air blowers
• Dust-collection blowers
• Combustion blowers
• Industrial ventilation
• Air-supply systems

The 1,590 A capacity makes the model appropriate for very large blower motors when the motor and duty requirements are within the applicable rating.

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14.5 Large Conveyor Systems

Large conveyors can have high inertia and substantial mechanical loads.

Potential applications include:

• Mining conveyors
• Cement conveyors
• Aggregate conveyors
• Bulk-material conveyors
• Port handling systems
• Heavy industrial conveyors

Controlled acceleration can reduce mechanical shock during startup.

Controlled deceleration can also help provide a smoother stopping process.

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15. Mining Applications

Large mining operations require high-power motor systems for material handling, ventilation and water management.

The drive can be considered for:

• Long-distance conveyors
• Large dewatering pumps
• Mine ventilation fans
• Material-handling equipment
• Processing equipment
• Auxiliary process machinery

For mining installations, environmental conditions are particularly important.

Dust, temperature, vibration, altitude and cabinet protection should all be considered during system design.

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16. Cement Industry Applications

Cement plants use many high-power motors.

Potential applications include:

• Large process fans
• Conveyors
• Blowers
• Cooling systems
• Material handling
• Process pumps
• Ventilation equipment

Variable-speed control can allow the motor to respond more closely to production requirements.

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17. Aggregate and Bulk-Material Applications

Aggregate processing and bulk-material handling can require large motors.

Potential applications include:

• Conveyors
• Large fans
• Dust-control systems
• Pumps
• Material-handling systems
• Process auxiliaries
• Large rotating machinery

The drive’s high current capacity is particularly useful for large motor installations.

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18. Product Advantages

18.1 Very High Current Capacity

The 1,590 A current rating is the most obvious characteristic of this model.

It is intended for large industrial motors requiring substantial electrical capacity.

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18.2 High Power Rating

The model provides up to approximately:

1,000 kW Light Duty

900 kW Normal Duty

710 kW Heavy Duty

This gives the drive flexibility across several types of industrial load.

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18.3 Variable-Speed Operation

The drive allows the motor speed to be adjusted according to the production process.

This is useful for:

• Pump flow
• Pump pressure
• Fan airflow
• Conveyor speed
• Cooling requirements
• Production rate
• Process control

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18.4 Controlled Acceleration

Large motors can produce considerable mechanical stress during startup.

A variable frequency drive allows the acceleration profile to be controlled.

This can help reduce sudden stress on:

• Shafts
• Couplings
• Gearboxes
• Conveyor belts
• Bearings
• Pumps
• Fans

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18.5 Controlled Deceleration

Controlled deceleration is useful when large rotating equipment needs to stop in a predictable manner.

This is particularly valuable for high-inertia machinery.

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18.6 Network Integration

Embedded EtherNet/IP allows the drive to participate in the plant’s automation architecture.

This can simplify:

• Remote control
• Speed control
• Status monitoring
• Fault monitoring
• Process coordination
• Data collection

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18.7 High-Power Industrial Construction

The Frame 9 configuration and 800 mm deep MCC-style construction are appropriate for substantial industrial electrical installations.

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19. Advantages in Pump Applications

For a pump, the required output often changes during normal production.

A fixed-speed motor may continue operating at a speed that is higher than necessary.

With variable-speed operation, the motor can be adjusted to match the process requirement.

Potential benefits include:

• Better flow regulation
• Better pressure control
• Smoother operation
• Reduced mechanical stress
• Better process flexibility
• Easier automation integration

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20. Advantages in Fan Applications

Fan systems frequently have changing airflow requirements.

The drive can adjust the motor speed according to the required air volume.

Potential benefits include:

• Adjustable airflow
• Improved process control
• Smoother startup
• Controlled stopping
• Easier centralized control
• Better coordination with other equipment

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21. Advantages in Conveyor Applications

Large conveyors can be difficult to start because of their mechanical inertia.

The drive provides controlled acceleration instead of applying full motor speed immediately.

Potential benefits include:

• Reduced belt shock
• Reduced gearbox stress
• Controlled startup
• Adjustable conveyor speed
• Smoother stopping
• Better coordination with upstream equipment

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22. Advantages in Automated Production

The drive can be integrated into a larger industrial control system.

This allows the motor controller to exchange information with the plant automation system.

Typical functions include:

• Start/stop
• Speed reference
• Status feedback
• Fault feedback
• Operating data
• Process coordination

This is especially useful in plants where multiple large drives need to operate together.

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23. Five Same-Series or Closely Related Models

The following models are useful for comparison with the requested product within the same PowerFlex 755 range.

The closest comparison is the K5 configuration.

The K4 configuration provides a lower current and power level.

The K6 configuration represented by the requested model increases the current to approximately 1,590 A and the light-duty rating to approximately 1,000 kW.

The 2K0 configuration moves into a substantially higher current class.

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24. Closest K4 / K5 / K6 Comparison

The K6 configuration provides the highest current and power level of these three closely related models.

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25. Five Additional Related Models

These models form a useful progression when comparing drive capacity.

The selection should be based primarily on motor current, duty classification and actual mechanical load.

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26. Five Representative Models from the Same Brand

These models provide a practical comparison between different current and power levels.

The requested K6 model is positioned above the K5 and K4 configurations in terms of current capacity.

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27. Product Capacity Comparison

The requested 20G11LC1K6AN0NNNNN is the highest-capacity model in this particular LC K-series comparison before moving to a substantially larger configuration.

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28. Typical Application Selection

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29. Installation Considerations

A drive of this capacity requires careful electrical and mechanical planning.

Electrical Requirements

The incoming electrical system must be appropriately rated for the drive.

The motor cable, protective devices, disconnect equipment, grounding system and associated electrical components should be selected according to the actual installation.

Motor Compatibility

The motor voltage and current must be compatible with the drive.

The motor nameplate current should be compared against the appropriate drive current rating.

Duty Classification

The application must be identified as light duty, normal duty or heavy duty.

This is particularly important when the motor experiences repeated overload or high starting torque.

Cooling

Adequate airflow must be maintained.

The installation should prevent hot air from being recirculated into the cooling intake.

Mechanical Installation

The 800 mm depth should be included in cabinet and electrical-room planning.

Maintenance clearance should also be considered.

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30. Maintenance Recommendations

For a large industrial drive, preventive maintenance is important because an unexpected failure can interrupt a major production system.

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31. Why the 20G11LC1K6AN0NNNNN Is Suitable for Large Industrial Equipment

The main strength of this model is its combination of high current capacity and variable-speed control.

At 1,590 A, the drive is designed for very large motor applications.

At the same time, the PowerFlex 755 platform provides features that are useful for automated production systems.

The drive is therefore not simply a high-power motor starter.

It can be used as an important part of the process-control system.

For a pump, it can regulate speed according to pressure or flow.

For a fan, it can adjust airflow according to process demand.

For a conveyor, it can control acceleration and operating speed.

For a blower, it can adjust air delivery.

For a cooling system, it can respond to changing thermal demand.

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32. Comparison With Fixed-Speed Motor Starting

The major difference is that a variable frequency drive allows the motor to become part of the process-control strategy.

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33. Overall Product Advantages

The main advantages of the 20G11LC1K6AN0NNNNN can be summarized as follows:

High current capacity: approximately 1,590 A.

High power capacity: up to approximately 1,000 kW in light-duty operation.

Large-motor compatibility: designed for very large three-phase AC motors.

Variable-speed operation: motor speed can be matched to process requirements.

Controlled acceleration: useful for high-inertia equipment.

Controlled deceleration: provides a predictable stopping profile.

Industrial communication: embedded EtherNet/IP supports automation integration.

Forced-air cooling: appropriate for high-power industrial equipment.

MCC-style construction: suitable for large electrical installations.

Flexible applications: suitable for pumps, fans, blowers, conveyors and other industrial machinery.

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34. Final Technical Parameter Table

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35. Conclusion

The 20G11LC1K6AN0NNNNN is a high-power PowerFlex 755 AC variable frequency drive intended for large industrial motor-control applications.

Its 1,590 A rated current, 1,000 kW light-duty capacity, 900 kW normal-duty capacity, and 710 kW heavy-duty capacity make it appropriate for very large motor systems.

The model is particularly attractive for applications where a large motor needs more than simple start/stop control.

Large pumps can benefit from adjustable flow and pressure control.

Large fans can benefit from adjustable airflow.

Large conveyors can benefit from controlled acceleration and deceleration.

Large blowers can benefit from adjustable process-air delivery.

Mining, cement, aggregate, water treatment, industrial ventilation and other process industries can also make use of this type of high-capacity variable-speed drive.

The 800 mm deep MCC-style construction is an important mechanical consideration, while the exact width, height and weight in kg should be taken from the final configured equipment documentation rather than estimated.

When choosing between the closely related K4, K5 and K6 configurations, the most important factors are the motor nameplate current, operating voltage, duty classification, starting torque, overload requirement, load inertia and actual operating cycle.

For a motor approaching the upper capacity of the K5 configuration, the K6 model provides additional current and power capacity, making it a useful choice when the motor’s electrical requirements demand a higher-rated drive.