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20G11LC1K2JN2NNNNN — Detailed Product Introduction, Technical Parameters, Applications, Advantages and Model Recommendations

Product Model: 20G11LC1K2JN2NNNNN

Brand: Allen-Bradley

Product Series: PowerFlex 755

Product Family: PowerFlex 750 Series

Product Type: High-power air-cooled AC packaged variable frequency drive

The 20G11LC1K2JN2NNNNN is a high-power AC variable frequency drive designed for large three-phase motor applications. It is a Frame 9 PowerFlex 755 configuration intended for demanding industrial equipment where large motor capacity, reliable speed regulation and centralized automation are required.

This model is configured for a 400 VAC, three-phase input, with a rated output current of 1175 A. Its published power ratings are 800 kW for light-duty applications, 710 kW for normal-duty applications and 560 kW for heavy-duty applications.

Compared with the closely related JN0 configuration, the JN2 configuration includes an enhanced LCD, full-numeric HIM arrangement, making it more convenient when local operation, parameter adjustment, monitoring and troubleshooting are required.

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1. Basic Product Information

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2. Product Identification

The 20G11LC1K2JN2NNNNN belongs to the high-power section of the PowerFlex 755 product family.

Its configuration is intended for applications in which the motor requires a substantial amount of current and the drive must be integrated into a larger industrial electrical system.

The combination of 1175 A output current, 400 VAC three-phase operation, Frame 9 construction and 800 mm deep MCC-style packaging places this model in the large industrial-drive category.

It is not a compact machine-mounted inverter.

Instead, it is intended for larger industrial installations where electrical distribution, ventilation, cable routing and maintenance access are planned as part of the overall system.

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3. Product Series — PowerFlex 755

The product belongs to the PowerFlex 755 series.

The PowerFlex 755 series is designed for high-performance industrial AC motor control.

It is commonly associated with applications requiring:

• Large motor capacity
• Variable-speed operation
• High current capability
• Industrial communication
• Centralized control
• Process automation
• Controlled acceleration and deceleration
• Motor diagnostics
• Flexible application control

The 20G11LC1K2JN2NNNNN is one of the larger configurations in this family.

Its main target is large industrial rotating machinery.

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4. Product Configuration

The model can be understood as a combination of electrical, mechanical and interface options.

The most noticeable feature of this particular configuration is the enhanced LCD full-numeric HIM.

This provides a more convenient local interface than a configuration without a HIM.

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5. Main Electrical Parameters

The 1175 A output-current rating is one of the most important selection criteria for this model.

For final motor selection, the motor nameplate current should be compared with the appropriate drive duty rating.

The motor’s nominal kW alone should not be used as the only selection parameter.

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6. Power Ratings

The drive has three major duty classifications.

These ratings are important because different industrial loads place different demands on the drive.

A centrifugal pump or fan may have a relatively favorable variable-torque load profile.

A heavily loaded conveyor may require more starting torque and overload capability.

A process machine may have frequent acceleration and deceleration.

Therefore, the appropriate duty rating should be determined from the actual mechanical load.

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7. 1175 A Current Capacity

The 1175 A output rating gives the model a substantial motor-control capacity.

This makes it suitable for applications such as:

• Large pumps
• Large fans
• Large blowers
• Long conveyors
• Mining equipment
• Cement machinery
• Material-handling equipment
• Large process machinery
• Industrial cooling systems
• Large compressors

The high-current design also means that the associated electrical infrastructure must be designed appropriately.

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8. Physical Construction

The drive uses Frame 9 construction.

This is a large industrial frame intended for high-power motor applications.

The 800 mm dimension represents the cabinet-depth class.

The exact overall height and width should be taken from the specific mechanical configuration when preparing an installation drawing.

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9. Dimensions and Weight

Physical dimensions and weight are especially important for a large industrial drive.

The available model information identifies the unit with an 800 mm deep MCC-style construction.

For the referenced configuration, the product weight is approximately:

79.38 kg

The actual shipping weight can be greater than the product weight because packaging and transportation materials are not necessarily included in the product-weight figure.

For crane, forklift, foundation and floor-loading calculations, the final shipping and installation configuration should be checked separately.

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10. Enclosure and Protection

The model is specified as Type 1 / IP20.

The enclosure is intended for an appropriate industrial electrical environment.

It should not be treated as a sealed outdoor enclosure.

If the installation environment contains high humidity, excessive dust, corrosive gases or water spray, additional environmental protection should be considered.

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11. Cooling System

The 20G11LC1K2JN2NNNNN uses forced-air cooling.

At this power level, thermal management is an important part of the installation.

The cabinet should have adequate ventilation.

The airflow path should remain unobstructed.

Hot exhaust air should not be allowed to return directly to the cooling intake.

The cooling system should also be inspected during preventive maintenance.

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12. Input System and Precharge

The drive uses an AC input with precharge.

Precharge is particularly important for a high-power drive because the DC-link capacitors represent a significant electrical load during initial energization.

The precharge system helps manage the initial charging process.

The associated electrical installation should be designed with appropriate:

• Disconnecting equipment
• Short-circuit protection
• Grounding
• Cable sizing
• Incoming protection
• Electrical isolation
• Maintenance procedures

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13. DC Terminals

This configuration is associated with an AC input arrangement that includes DC terminals.

This can provide additional flexibility in applications where the DC bus architecture needs to be considered.

DC connections should only be used according to the applicable drive configuration and installation requirements.

Because high-power DC circuits can contain significant stored energy, appropriate electrical safety procedures are important.

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14. Dynamic Braking

The specified model configuration has:

Dynamic Braking: None

This configuration can be suitable for applications where the motor does not require rapid regenerative stopping.

Examples may include:

• Centrifugal pumps
• Large fans
• Some blowers
• Certain continuous-process systems

However, applications involving large inertia or frequent rapid deceleration should be evaluated separately.

Braking may become important for:

• Large conveyors
• High-inertia machinery
• Rapid-cycle equipment
• Lifting systems
• Machines requiring short stopping times

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15. Enhanced LCD Full-Numeric HIM

One of the major configuration characteristics of this model is the:

Enhanced LCD, Full Numeric HIM

This provides a local operator interface for the drive.

Compared with a configuration without a local interface, this can make commissioning and maintenance more convenient.

Typical functions include:

• Parameter viewing
• Parameter adjustment
• Drive status monitoring
• Fault monitoring
• Fault reset
• Speed reference
• Start and stop control where enabled
• Diagnostic information
• Operating-value display

The HIM is particularly useful during commissioning and troubleshooting because technicians can obtain information directly from the drive.

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16. Local Operation

The handheld/local HIM configuration is useful when technicians need to work directly with the drive.

For example, during commissioning, a technician may need to check:

• Motor frequency
• Output current
• DC bus voltage
• Drive status
• Fault conditions
• Warning conditions
• Speed reference
• Actual speed
• Parameter settings

This can reduce dependence on a remote HMI during initial testing.

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17. Embedded EtherNet/IP

The drive includes embedded EtherNet/IP capability.

This makes it suitable for centralized industrial automation.

Typical network-controlled functions include:

This combination of a local HIM and network communication is useful for large industrial systems.

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18. EMC Filtering

The model is configured with EMC filtering and the common-mode jumper installed.

This arrangement helps address electromagnetic compatibility considerations.

At high power levels, appropriate installation practices remain important.

The following should be considered:

• Grounding
• Motor cable routing
• Control cable separation
• Shielding
• Cabinet bonding
• Cable length
• Electrical noise

The filter is part of the overall EMC strategy rather than a replacement for proper installation practices.

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19. Product Applications

Large Water Pumps

Large pumping systems are one of the most suitable applications.

Typical uses include:

• Water circulation
• Industrial water supply
• Wastewater
• Cooling water
• Process water
• Pumping stations
• Utility systems

Variable-speed operation allows the pump to respond to changing process demand.

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20. Cooling-Water Pumps

Industrial plants often use large pumps for cooling.

The drive can be applied to:

• Cooling towers
• Heat exchangers
• Process cooling
• Equipment cooling
• Central cooling-water systems

The pump speed can be adjusted to match the required cooling capacity.

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21. Large Fans

Large industrial fans may require several hundred kilowatts of motor power.

Potential applications include:

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

The variable-speed capability allows airflow to be adjusted according to process requirements.

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22. Industrial Blowers

Large blowers can also be controlled using this type of drive.

Typical applications include:

• Process air
• Combustion air
• Ventilation
• Dust-control systems
• Industrial air supply
• Process equipment

The motor can operate at a speed appropriate for the actual process demand.

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23. Conveyor Systems

Large conveyor systems are another potential application.

Typical industries include:

• Mining
• Cement
• Aggregate
• Ports
• Bulk material handling
• Heavy manufacturing

The controlled acceleration characteristic can help reduce mechanical shock.

This can be valuable for long conveyors and heavily loaded belts.

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24. Mining Applications

The high current rating makes the model suitable for consideration in large mining installations.

Potential applications include:

• Long-distance conveyors
• Dewatering pumps
• Ventilation fans
• Processing machinery
• Material handling
• Large auxiliary equipment

The environmental conditions should be evaluated carefully in mining applications.

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25. Cement and Aggregate Equipment

Large cement and aggregate facilities commonly use high-power motors.

Potential applications include:

• Large fans
• Conveyors
• Pumps
• Dust collection
• Material handling
• Cooling equipment
• Process machinery

Variable-speed control can provide greater flexibility during production changes.

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26. Compressor Systems

Large industrial compressors can require high motor power.

Potential benefits include:

• Adjustable motor speed
• Controlled acceleration
• Flexible production
• Reduced mechanical stress
• Process matching

Compressor load characteristics should be evaluated before final selection because compressor loads can behave differently from pump and fan loads.

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27. Material Handling

Large material-handling equipment can benefit from controlled motor operation.

Applications may include:

• Bulk-material conveyors
• Heavy-duty transport systems
• Industrial handling equipment
• Production-line machinery
• Large lifting-related auxiliary equipment

The exact braking requirements should be checked when the machine has high inertia.

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28. Heavy Industrial Machinery

The drive can be used for large rotating machinery in heavy industry.

Possible applications include:

• Large pumps
• Large fans
• Blowers
• Conveyors
• Process equipment
• Cooling systems
• Material handling
• Production machinery

The high current capacity gives the model a broad application range.

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29. Main Product Advantages

High Current Capacity

The 1175 A output rating allows the drive to control very large motors.

This is one of the model’s strongest characteristics.

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High Power Capability

The model provides:

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

This gives users flexibility when selecting the drive for different load types.

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Local LCD Interface

The enhanced full-numeric LCD HIM makes local commissioning and troubleshooting easier.

Technicians can view drive operating information without relying entirely on a remote control system.

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EtherNet/IP Integration

Embedded EtherNet/IP supports communication with an industrial control system.

This is useful for centralized operation and monitoring.

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Controlled Motor Starting

The drive can control motor acceleration instead of applying the full electrical starting condition immediately.

This can reduce mechanical shock.

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Flexible Speed Control

Motor speed can be adjusted according to process requirements.

This is especially useful for:

• Pumps
• Fans
• Blowers
• Conveyors
• Process machinery

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High-Power Industrial Construction

Frame 9 and the 800 mm deep MCC-style configuration are designed for large industrial installations.

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Suitable for Centralized Control

The combination of local HIM and network communication provides both local service access and centralized automation capability.

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30. Advantages for Pump Systems

For a centrifugal pump, the drive can adjust speed according to the required operating point.

Potential advantages include:

• Flexible flow control
• Adjustable pressure
• Controlled acceleration
• Reduced mechanical shock
• Easier process adjustment
• Centralized monitoring

The actual energy performance depends on the pump, piping system and operating conditions.

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31. Advantages for Fan Systems

For large fans, the drive can regulate airflow by changing motor speed.

Potential benefits include:

• Adjustable airflow
• Controlled startup
• Process flexibility
• Reduced unnecessary full-speed operation
• Easier centralized monitoring

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32. Advantages for Conveyor Systems

For conveyors, controlled acceleration is particularly useful.

A gradual acceleration profile can reduce stress on:

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

This can be especially useful for long conveyors carrying heavy materials.

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33. Advantages for Maintenance

The enhanced LCD HIM is useful during service work.

A technician can inspect drive information directly.

Typical information includes:

• Operating frequency
• Output current
• Speed
• Status
• Faults
• Warnings
• Parameters
• Diagnostic information

This can make troubleshooting more efficient.

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34. Advantages for Automation

The drive can operate as part of a larger automated process.

A centralized controller can:

• Start the motor
• Stop the motor
• Set speed
• Monitor current
• Monitor speed
• Monitor drive status
• Read faults
• Read warnings
• Collect diagnostic information

This makes it suitable for large automated plants.

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35. Technical Parameter Table

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36. Five Recommended Models — Same Series or Closely Related

The following models are useful alternatives within the same high-power PowerFlex 755 range.

These models are particularly useful when the motor current requirement changes while the application remains within the same general product family.

The K0 and K1 configurations are appropriate for somewhat smaller motors.

The K4 and K5 configurations are intended for still higher-current applications.

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37. Comparison of the Five Related Models

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38. Five Recommended High-Power Models from the Same Brand

For customers looking at large industrial drives from the same brand, the following models provide useful comparison points.

These models are especially relevant when the customer wants to stay within the same product platform while changing the required motor capacity.

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39. Same-Series Model Selection Guide

The final selection should always be based on actual motor current and load duty rather than power alone.

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40. Application Suitability

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41. Environmental and Installation Parameters

At higher ambient temperatures or higher installation altitudes, applicable derating should be considered during engineering.

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42. Maintenance Recommendations

The enhanced LCD HIM is especially useful during maintenance because technicians can access drive information directly.

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43. Practical Benefits of the Enhanced HIM Configuration

The JN2 configuration is particularly attractive when local access to the drive is important.

During commissioning, a technician can use the local interface to check drive status without having to establish communication through the plant control system first.

During maintenance, the HIM can help display operating information and fault conditions.

During troubleshooting, it can provide a direct interface for checking parameters and operating values.

This makes the JN2 configuration particularly useful for installations where local service access is expected.

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44. Why Choose 20G11LC1K2JN2NNNNN?

The model is a strong choice when the application has the following characteristics:

• Large 400 VAC motor
• Three-phase industrial power
• Motor current approaching 1175 A
• Normal-duty power requirement around 710 kW
• Heavy-duty power requirement around 560 kW
• Need for variable-speed operation
• Need for local operator access
• Need for industrial network communication
• Need for centralized electrical installation
• Need for controlled motor acceleration
• Need for high-power industrial drive capacity

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45. Product Advantages at a Glance

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46. Complete Technical Summary

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47. Final Product Evaluation

The 20G11LC1K2JN2NNNNN is a high-power industrial variable frequency drive designed for large three-phase AC motors.

Its 1175 A output capacity and 710 kW normal-duty rating make it suitable for demanding industrial applications where a smaller drive would not provide sufficient capacity.

The 800 kW light-duty rating is particularly useful for suitable variable-torque applications, while the 560 kW heavy-duty rating provides a clear reference for more demanding loads.

The model’s Frame 9 construction and 800 mm deep MCC-style cabinet make it appropriate for large electrical rooms and centralized drive installations.

The forced-air cooling system is designed for high-power operation, but the installation must provide adequate airflow and appropriate environmental conditions.

One of the most useful characteristics of this specific model is the enhanced LCD full-numeric HIM.

This provides local access to drive information and makes commissioning, parameter adjustment and troubleshooting more convenient.

The embedded EtherNet/IP capability provides another control path for applications where the drive is connected to a centralized automation system.

The combination of local operation and network integration is particularly useful in large production facilities.

For pump applications, the drive provides flexible speed regulation.

For fan and blower applications, it can adjust airflow according to process demand.

For conveyors, controlled acceleration can help reduce mechanical stress.

For large process equipment, it provides a high-capacity platform for variable-speed motor control.

The Type 1 / IP20 enclosure means that the drive should be installed in a suitable controlled environment.

It should not be considered a sealed outdoor product.

The 800 mm cabinet-depth class should be included in the mechanical layout, while the final overall width and height should be checked against the actual configured equipment.

The referenced product configuration has a product weight of approximately 79.38 kg, while the final shipping weight can differ because of packaging and configuration.

For actual lifting, transportation and structural calculations, the final equipment documentation should be used.

Among the recommended models, the K0 and K1 configurations are useful when the required motor current is lower.

The K4 and K5 configurations are appropriate when the motor requires greater current and power capacity.

Overall, the 20G11LC1K2JN2NNNNN is best suited to large industrial motor applications where high current capacity, variable-speed operation, local LCD control, network communication, controlled acceleration and centralized installation are important.

It is especially well matched to large pumps, cooling systems, industrial fans, blowers, conveyors, mining equipment, cement equipment, material-handling systems, compressors and other large process machinery.