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20G11LD1K0JN0NNNNN — Detailed Product Overview, Technical Specifications, Applications, Advantages and Related Models

1. Product Overview

The 20G11LD1K0JN0NNNNN 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 a Frame 9, air-cooled, 480 VAC, high-current drive intended for demanding industrial installations.

The model has a nominal 1045 A output-current rating, making it suitable for very large motor systems where compact drives or lower-current industrial drives would not provide sufficient capacity.

The configuration is based on an 800 mm deep MCC-style enclosure, with Type 1 / IP20 protection and an air-cooled construction.

This model is particularly suitable for large conveyors, pumps, fans, blowers, material-handling machinery, mining equipment, cement-processing machinery, steel-processing equipment and other high-power industrial systems.

The JN0 configuration is a useful choice where the drive is integrated into a centralized automation system and a permanently installed local HIM is not required.

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2. Brand and Product Series

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3. Main Technical Parameters

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4. Duty Ratings

The drive has different power capacities depending on the duty category.

These ratings should not be interpreted as three independent motor ratings that can all be used simultaneously.

The appropriate rating depends on the actual motor load profile.

For a centrifugal fan or pump with a suitable variable-torque profile, the Light Duty rating can be particularly useful.

For general industrial machinery, the Normal Duty rating is normally the more meaningful reference.

For high-inertia, high-torque or severe overload applications, the Heavy Duty rating should be used when checking drive selection.

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5. Output Current — 1045 A

The 1045 A output-current capability is the most important electrical characteristic of this model.

A drive with this current rating is intended for very large motors and heavy industrial equipment.

It is considerably larger than drives normally used for small or medium-sized machinery.

The high-current capability makes the model suitable for equipment such as:

• Large mining conveyors
• Large industrial conveyors
• Large centrifugal pumps
• Large process pumps
• Large fans
• Large blowers
• Material-transfer equipment
• Cement machinery
• Steel-processing equipment
• Bulk-material handling systems
• Large ventilation equipment
• Heavy industrial process machinery

When selecting the drive, motor nameplate current should be compared directly against the applicable drive current rating.

Motor horsepower alone should not be used as the only selection criterion.

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6. 480 VAC Three-Phase Input

The 20G11LD1K0JN0NNNNN is designed for a 480 VAC three-phase industrial electrical system.

This voltage class is common in large industrial installations.

Because the drive is capable of handling more than 1000 A of output current, the complete electrical installation needs to be designed accordingly.

Important considerations include:

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7. Product Construction

The drive uses a Frame 9 construction.

Frame 9 is associated with large industrial drive installations and provides the physical space required for high-power electrical components.

The 800 mm deep MCC-style construction is especially important when planning the installation.

Unlike compact VFDs that can often be mounted directly onto a control-panel backplate, a drive of this size is normally installed as a substantial floor-standing electrical assembly.

The cabinet provides space for the high-current power section, cooling system, electrical connections and associated control equipment.

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8. Dimensions and Weight

Because this is a large industrial drive, physical installation requirements should be considered before electrical installation begins.

The following values are suitable for preliminary planning.

The 800 mm depth is the most important fixed mechanical reference for this configuration.

The overall height, width and weight can vary with the exact mechanical arrangement, options and shipping configuration.

For transportation, foundation design, floor-loading calculations, lifting arrangements or final cabinet layout, the exact configured mechanical drawing should always take precedence over preliminary planning values.

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9. Product Introduction

The 20G11LD1K0JN0NNNNN is designed for applications where a large AC motor needs more sophisticated control than a conventional motor starter can provide.

A traditional starter primarily controls motor energization.

A variable frequency drive can regulate motor speed and provide controlled acceleration and deceleration.

This makes a major difference when controlling large mechanical systems.

For example, starting a very large conveyor directly at full voltage can create significant mechanical stress.

Using a variable frequency drive allows the motor to accelerate progressively.

This can reduce mechanical shock and improve the overall operating behavior of the machine.

The same principle can be applied to large pumps, fans, blowers and material-handling systems.

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10. JN0 Configuration

The JN0 portion of the model designation identifies a configuration without a permanently installed local HIM.

This configuration can be useful when the drive is intended to operate as part of a centralized automation system.

Instead of requiring an operator to stand directly in front of the drive, commands and operating information can be handled through:

• PLC systems
• HMI systems
• Supervisory systems
• Industrial Ethernet networks
• Central control rooms
• Remote operator stations

This configuration can provide a cleaner cabinet arrangement and is particularly appropriate for installations where local keypad operation is not a primary requirement.

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11. Embedded EtherNet/IP

Embedded EtherNet/IP communication allows the drive to communicate with an industrial control system.

Typical information that can be exchanged includes:

This is particularly useful in large plants where numerous motors and drives are controlled from a centralized system.

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12. Large Conveyor Applications

Large conveyors are one of the strongest application areas for a drive of this size.

Potential applications include:

• Mining conveyors
• Ore conveyors
• Port conveyors
• Cement conveyors
• Bulk-material conveyors
• Long-distance conveyors
• Steel-plant conveyors
• Material-transfer systems

Large conveyor systems can experience substantial mechanical stress during starting.

A variable frequency drive allows acceleration to be controlled according to the mechanical requirements of the conveyor.

This can help reduce stress on:

• Conveyor belts
• Gearboxes
• Shafts
• Bearings
• Couplings
• Drive pulleys

Controlled speed can also improve the coordination of multiple sections of a material-handling system.

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13. Mining Applications

Mining operations frequently require large motors with substantial current requirements.

The 20G11LD1K0JN0NNNNN can be considered for applications such as:

• Ore conveyors
• Material-transfer systems
• Dewatering pumps
• Ventilation fans
• Processing machinery
• Bulk-material handling
• Large auxiliary machinery

Mining equipment can experience high inertia and severe mechanical loading.

Therefore, the Heavy Duty rating and actual motor current should be carefully evaluated during selection.

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14. Pump Applications

Large pumps can benefit from variable-speed control.

Potential applications include:

• Mine dewatering
• Industrial water transfer
• Cooling-water circulation
• Process pumping
• Wastewater pumping
• Large fluid-transfer systems
• Industrial circulation systems

A pump does not necessarily need to operate at full speed at all times.

By controlling motor speed, the drive can help match pump output to process requirements.

For suitable centrifugal pump applications, this can also reduce energy consumption.

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15. Fan Applications

Large fans can have very high motor power requirements.

Potential applications include:

• Industrial ventilation
• Furnace ventilation
• Process ventilation
• Cooling systems
• Dust extraction
• Exhaust systems
• Large air-handling equipment

Variable-speed control can provide a better method of adjusting airflow than continuously running the motor at full speed.

This can be particularly beneficial for variable-torque fan loads.

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16. Blower Applications

Large industrial blowers can also require hundreds of kilowatts of motor capacity.

Possible applications include:

• Process air
• Industrial ventilation
• Furnace air systems
• Dust collection
• Combustion-air systems
• Manufacturing processes

The drive can provide controlled speed and centralized monitoring.

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17. Cement and Mineral Processing

Cement plants and mineral-processing facilities often contain very large motors.

The drive can be considered for:

• Large conveyors
• Process fans
• Material-transfer systems
• Large pumps
• Dust-collection equipment
• Bulk-material handling
• Auxiliary machinery

The high current rating is particularly useful where the motor is several hundred kilowatts.

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18. Steel and Metal Processing

Large metal-processing facilities use high-power motors for a variety of machines.

Possible applications include:

• Material conveyors
• Cooling systems
• Large fans
• Process equipment
• Transfer machinery
• Auxiliary production systems

The embedded industrial communication capability can make the drive suitable for coordinated production systems.

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19. Compressor Applications

Large compressors can also be considered, although compressor applications require detailed engineering.

Before selecting the drive for a compressor, it is important to check:

• Motor full-load current
• Starting torque
• Compressor load curve
• Acceleration time
• Operating speed range
• Minimum operating speed
• Maximum operating speed
• Overload requirements

The electrical capacity of the drive is only one part of the complete application assessment.

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20. Main Product Advantages

20.1 High Output Current

The 1045 A output rating is the primary advantage of this model.

It provides the capacity required for very large AC motor systems.

This makes the drive appropriate for heavy industrial equipment rather than small machine applications.

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20.2 High Power Capacity

The drive supports:

• 1000 HP Light Duty
• 900 HP Normal Duty
• 750 HP Heavy Duty

This provides flexibility for different load profiles.

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20.3 Controlled Starting

Large motors can impose significant mechanical and electrical stress when started abruptly.

Variable-frequency starting allows acceleration to be controlled.

This can reduce:

• Mechanical shock
• Belt tension changes
• Gearbox stress
• Coupling stress
• Current surges

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20.4 Controlled Stopping

Controlled deceleration can provide smoother stopping.

This is useful when the driven equipment has high rotational inertia.

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20.5 Industrial Communication

Embedded EtherNet/IP allows the drive to communicate directly with a compatible industrial control architecture.

This can simplify:

• Start/stop control
• Speed references
• Status monitoring
• Fault monitoring
• Process coordination

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20.6 Large Industrial Construction

The Frame 9, 800 mm deep MCC-style design is intended for high-power industrial installations.

The physical construction is appropriate for equipment requiring substantial electrical capacity.

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20.7 Centralized Control Compatibility

The JN0 configuration is well suited to installations where local HIM operation is not necessary.

The drive can instead be integrated into a centralized control system.

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20.8 Broad Application Range

The PowerFlex 755 platform can be used in many industrial applications.

It is suitable for:

• Pumps
• Fans
• Conveyors
• Blowers
• Material handling
• Mining
• Cement
• Steel
• General process machinery

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21. Related Models — Same Series or Closely Related

The following five models are useful comparison candidates within the same high-power product family.

These models are useful when comparing the same basic drive platform with different interface or current configurations.

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22. Closest Model Comparison

The key distinction between these closely related configurations is the interface and configuration arrangement rather than the basic 1045 A electrical power class.

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23. Higher-Current Related Model

20G11LD1K1AN0NNNNN

This model is a useful alternative when additional current capacity is required.

This model can be considered where the motor current approaches or exceeds the practical selection range of the 1045 A version.

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24. Five Popular Models from the Same Brand

The following models provide a broader view of the same brand’s drive portfolio.

The first two models belong to a compact-drive class and are intended for substantially smaller motors.

The 20F11 model is in a medium/high-power industrial range.

The 20G models are intended for extremely large industrial motor systems.

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25. Compact Model — 25B-D2P3N114

The 25B-D2P3N114 is a compact drive designed for substantially smaller applications.

This is not a direct replacement for the 1045 A drive.

It is included as a comparison model for applications where a much smaller drive is appropriate.

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26. Compact Model — 25B-D6P0N114

The 25B-D6P0N114 provides a somewhat higher current capacity in the compact-drive range.

Again, this is intended for a dramatically smaller motor range than the target model.

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27. Industrial Model — 20F11ND077JA0NNNNN

The 20F11ND077JA0NNNNN belongs to the PowerFlex 753 series.

This model occupies a much lower power range than the 20G11LD1K0JN0NNNNN.

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28. Application Comparison

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29. Installation and Engineering Considerations

A drive with an output rating exceeding 1000 A requires careful engineering.

The installation should not be considered simply as a matter of connecting a motor and a power supply.

The complete electrical system should be evaluated.

Important items include:

Power Supply

The incoming 480 VAC system must have sufficient capacity.

The transformer, feeder, protective equipment and distribution system should all be appropriately rated.

Motor Connection

Motor cables need to be selected according to current, installation method, temperature, length and applicable electrical requirements.

Grounding

Proper grounding is essential for electrical safety and reliable operation.

Cooling

The air-cooled drive needs sufficient ventilation.

The cabinet installation should not restrict the cooling airflow.

Maintenance Clearance

Adequate front and service access should be provided.

Floor Loading

The approximate 1200 kg weight class should be included in the floor-loading assessment.

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30. Transportation Considerations

The physical size and weight of this drive are significant.

A preliminary transportation plan should consider:

• Delivery vehicle
• Loading equipment
• Unloading equipment
• Forklift capacity
• Crane capacity
• Door dimensions
• Building access
• Floor capacity
• Installation position
• Final maintenance clearance

The approximately 1200 kg class weight means that ordinary manual handling is not appropriate.

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31. Maintenance Considerations

Regular maintenance can help preserve drive reliability.

Recommended maintenance areas include:

For large industrial drives, preventive maintenance is generally preferable to waiting for a failure.

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32. Energy Efficiency

The use of variable-speed control can provide significant energy-saving potential in suitable applications.

This is particularly true for variable-torque equipment.

Large centrifugal pumps and fans can often operate at lower speed when the process demand is reduced.

Instead of continuously operating at full speed and controlling the process through throttling or mechanical restriction, the motor speed can be adjusted directly.

This can improve the relationship between motor output and actual process demand.

For constant-torque equipment such as conveyors, energy savings may be less dramatic, but the drive can still provide important operational benefits such as controlled acceleration and improved speed regulation.

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33. Control System Integration

The embedded EtherNet/IP capability makes the drive suitable for centralized control architectures.

A typical system may contain:

PLC → Industrial Network → Drive → Motor → Mechanical Load

The control system can provide:

• Start command
• Stop command
• Speed reference
• Operating mode
• Process setpoint

The drive can return:

• Actual speed
• Output current
• Status
• Warning information
• Fault information

This two-way communication can simplify system-level automation.

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34. Selection Advantages Compared with a Smaller Drive

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35. Key Points for Purchasing and Replacement

When purchasing or replacing this model, the following details should be checked carefully:

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36. Recommended Models at a Glance

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37. Final Product Summary

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38. Conclusion

The 20G11LD1K0JN0NNNNN is a very high-power industrial AC drive designed for large 480 VAC three-phase motor systems.

Its 1045 A output current, combined with 1000 HP Light Duty, 900 HP Normal Duty and 750 HP Heavy Duty ratings, places it in the highest-power range of conventional industrial motor-drive applications.

The PowerFlex 755 platform is well suited to large process machinery where controlled speed, controlled acceleration, controlled stopping, network communication and centralized automation are important.

The Frame 9, 800 mm deep MCC-style construction provides the physical architecture required for a drive of this size.

Its air-cooled design makes it appropriate for large industrial installations, while the embedded EtherNet/IP capability allows the drive to become part of a larger automated production system.

The JN0 configuration is particularly suitable where a local permanent HIM is not necessary and the drive is intended to be operated primarily through a PLC, HMI, supervisory system or centralized control room.

For applications requiring a similar 1045 A electrical configuration with a local operator interface, the 20G11LD1K0JN2NNNNN and 20G11LD1K0JN4NNNNN are useful related configurations to consider.

Where additional current capacity is required, the 20G11LD1K1AN0NNNNN can be considered as a higher-current alternative.

From a practical engineering perspective, the most important characteristics of the 20G11LD1K0JN0NNNNN are its 1045 A current capacity, 480 VAC three-phase input, 1000/900/750 HP duty ratings, Frame 9 construction, 800 mm cabinet depth, air cooling, embedded EtherNet/IP and no permanently installed HIM.

Because the equipment is approximately 1200 kg class and occupies a large floor-standing cabinet, mechanical installation, transportation, floor loading, cooling and maintenance access should be considered at the same time as electrical selection.

For a final engineering replacement or purchasing decision, the motor nameplate current, motor voltage, duty profile, overload requirement, braking requirement, environmental conditions and exact cabinet arrangement should all be matched against the intended application.