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20G11JC1K0JN4NNNNN — Detailed Product Information, Technical Parameters, Applications and Related Models

1. Product Overview

The 20G11JC1K0JN4NNNNN is a high-power AC variable frequency drive belonging to the PowerFlex 755 product series.

It is intended for large three-phase industrial motors where high current capacity, adjustable speed, controlled acceleration and deceleration, motor protection, process integration and reliable industrial operation are required.

This configuration belongs to the Frame 9, 400 VAC class and has a nominal output-current capacity of approximately 1,040 A.

Depending on the selected duty class, the drive can be applied to motors in the approximate range of 500 kW to 630 kW. The actual motor selection should always be based on motor rated current and load characteristics rather than motor power alone.

The model uses a large floor-mounted industrial enclosure with forced-air cooling and an IP54 / NEMA Type 12 protection class.

The catalog number ending in JN4 distinguishes this configuration from the closely related JN0 version and indicates a different option configuration. The exact braking and cabinet option should be confirmed against the final equipment configuration before engineering a replacement, because suffix-level options can affect the external arrangement and installation requirements.

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2. Basic Product Identification

The dimensions and weight above are intended as practical approximate values for planning purposes. The final mechanical drawing should be used when exact transportation, lifting, foundation and installation calculations are required.

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3. Brand and Product Series

The PowerFlex 755 series is designed for demanding industrial applications where a drive needs to provide more than simple frequency control.

The series is particularly suitable for large machines requiring adjustable speed, controlled torque, automation-system integration, diagnostics and flexible motor-control functions.

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4. Product Introduction

The 20G11JC1K0JN4NNNNN is designed to control the operating speed and torque of large three-phase AC motors.

In a conventional fixed-speed motor system, the motor generally operates at a predetermined speed whenever power is applied.

A variable frequency drive changes this operating concept.

The drive electronically regulates the frequency and voltage supplied to the motor, allowing the motor speed to be adjusted according to the actual production requirement.

This is particularly valuable in large industrial systems.

For example, a large pump may not need to run at maximum speed throughout the entire production cycle.

A large fan may need different airflow levels at different times.

A conveyor may need a controlled acceleration profile to prevent material movement or mechanical shock.

A large process machine may require different speeds during loading, production and unloading.

The drive provides the electrical platform required for these operating conditions.

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5. Main Electrical Parameters

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6. Power Rating

One of the most important features of this model is its high power capability.

The approximate ratings are:

630 kW — Light Duty

560 kW — Normal Duty

500 kW — Heavy Duty

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

They represent different operating-duty conditions.

A variable-torque application such as a large centrifugal fan or pump can often use a higher power rating than a constant-torque application with substantial overload requirements.

For this reason, selecting the drive according to the motor’s actual rated current and application duty is more appropriate than simply comparing the motor’s nameplate kW with the drive’s maximum advertised kW.

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7. Light-Duty Application

The approximate light-duty rating is:

630 kW

Light-duty operation is generally associated with applications where the load has comparatively moderate overload requirements.

Potential applications include:

• Large centrifugal fans.
• Large ventilation systems.
• Cooling fans.
• Large pumps.
• Blowers.
• Air-handling systems.
• Industrial exhaust systems.
• Certain water-treatment systems.

For variable-torque loads, speed control can also provide significant process benefits.

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8. Normal-Duty Application

The approximate normal-duty rating is:

560 kW

This rating is highly relevant for many continuous industrial applications.

Potential applications include:

• Large pumps.
• Process fans.
• Conveyors.
• Blowers.
• Material-handling systems.
• Industrial process equipment.
• Large rotating machines.

A 560 kW motor should not automatically be paired with this drive solely because the power values appear identical.

Motor rated current, service factor, ambient temperature, overload requirement, acceleration time and altitude all need to be considered.

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9. Heavy-Duty Application

The approximate heavy-duty rating is:

500 kW

Heavy-duty operation is more relevant to applications where the machine needs greater torque or experiences more demanding acceleration and overload conditions.

Typical examples include:

• Heavy conveyors.
• Mining machinery.
• Crushers.
• High-inertia machinery.
• Heavy material-handling equipment.
• Process machinery with significant starting torque.

The heavy-duty rating is therefore particularly important when the mechanical load is not simply a smooth variable-torque load.

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10. Mechanical Parameters

Because this is a Frame 9 high-power cabinet rather than a compact drive, the mechanical installation requirements are substantial.

Adequate space should be provided for power connections, control wiring, cooling airflow, maintenance access and equipment handling.

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11. Dimensions and Weight

The approximate physical size can be represented as follows:

The actual dimensions and shipping weight can change according to the exact cabinet configuration, installed options and accessories.

For this reason, the values should be used for preliminary planning rather than final mechanical fabrication.

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12. Enclosure Protection

The configuration is associated with:

IP54 / NEMA Type 12

This type of enclosure is intended for industrial environments where the equipment needs protection against dust and incidental moisture.

It is suitable for many indoor electrical rooms and industrial production areas.

However, IP54 does not mean that the equipment can be exposed indefinitely to heavy water spray, outdoor weather, condensation or corrosive chemicals.

Environmental conditions should always be evaluated before installation.

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13. Cooling System

The drive uses forced-air cooling.

A high-power semiconductor switching system generates considerable heat.

Therefore, correct thermal management is essential.

Important installation factors include:

• Ambient temperature.
• Airflow.
• Cabinet ventilation.
• Cooling-fan condition.
• Air inlet temperature.
• Exhaust-air routing.
• Dust accumulation.
• Installation altitude.
• Continuous load level.
• Switching conditions.

Poor ventilation can cause unnecessary thermal stress and reduce equipment reliability.

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14. Industrial Communication

The PowerFlex 755 platform supports industrial automation integration through EtherNet/IP.

This allows the drive to communicate with a supervisory control system.

Typical information can include:

• Start command.
• Stop command.
• Speed reference.
• Actual speed.
• Output frequency.
• Output current.
• Torque.
• Drive status.
• Fault information.
• Alarm information.
• Diagnostic information.

This makes the drive suitable for centralized plant automation.

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15. Typical Control Architecture

A typical industrial installation can be structured as:

Operator Interface

↓

Industrial Controller

↓

EtherNet/IP Network

↓

20G11JC1K0JN4NNNNN

↓

Large Three-Phase Motor

↓

Pump / Fan / Conveyor / Process Machine

This arrangement allows the motor drive to become part of the overall process instead of functioning as an independent motor controller.

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16. Product Applications

Large Pump Systems

Large pumps are one of the most common applications for high-power variable-frequency drives.

Possible applications include:

• Industrial water circulation.
• Cooling-water systems.
• Process-fluid systems.
• Water transfer.
• Wastewater handling.
• Mining-water systems.
• Large pumping stations.

Variable-speed control allows pump output to be adjusted to process demand.

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Large Fan Systems

Large industrial fans can consume hundreds of kilowatts.

Potential applications include:

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

The ability to adjust fan speed can improve process flexibility and reduce unnecessary operation at maximum speed.

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Large Blowers

The drive is also appropriate for large blower applications.

Typical applications include:

• Aeration.
• Process air.
• Pneumatic conveying.
• Industrial ventilation.
• Combustion systems.
• Manufacturing processes.

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Conveyor Systems

Large conveyors can require substantial torque and controlled acceleration.

The drive can be used in:

• Mining conveyors.
• Cement conveyors.
• Aggregate handling.
• Bulk material systems.
• Port handling.
• Heavy manufacturing.

Controlled acceleration can reduce mechanical stress on belts, couplings, gearboxes and other components.

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Mining Applications

High-power drives are particularly relevant to mining environments.

Potential applications include:

• Long conveyors.
• Large pumps.
• Ventilation systems.
• Material handling.
• Crushing systems.
• Processing machinery.

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Cement and Building-Material Equipment

Potential applications include:

• Large fans.
• Large pumps.
• Conveyors.
• Material-handling systems.
• Dust extraction.
• Process equipment.

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Steel and Heavy Manufacturing

Possible applications include:

• Cooling pumps.
• Process fans.
• Conveyors.
• Material handling.
• Large auxiliary machinery.
• Process rotating equipment.

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17. Application Summary

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18. Main Product Advantages

18.1 High Output Current

The 1,040 A output-current class is the most significant feature of this model.

It allows the drive to operate large motors that are beyond the practical range of compact industrial inverters.

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18.2 High Motor Power

The drive can support approximately:

630 kW light duty

560 kW normal duty

500 kW heavy duty

This places it firmly in the large industrial-drive category.

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18.3 Suitable for Large Industrial Loads

The drive can be applied to several different load types.

It can be used for variable-torque equipment as well as more demanding constant-torque applications when correctly sized.

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18.4 Industrial Enclosure

The IP54 / Type 12 enclosure provides a practical level of protection for many industrial indoor installations.

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18.5 Networked Automation

Embedded EtherNet/IP allows the drive to exchange operating information with an automation system.

This can simplify centralized monitoring and control.

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18.6 Diagnostic Capability

The drive can provide useful operating and fault information.

This supports troubleshooting and maintenance activities.

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18.7 Controlled Acceleration

Large motors can be accelerated according to a programmed ramp rather than being connected directly to the supply at full electrical stress.

This can reduce mechanical shock.

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18.8 Adjustable Speed

The motor can operate at different speeds according to process requirements.

This is particularly useful for pumps, fans and blowers.

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19. Maintenance Advantages

The drive provides information that can assist maintenance personnel.

Useful monitored conditions can include:

• Motor current.
• Motor speed.
• Output frequency.
• Torque.
• Drive temperature.
• Drive status.
• Fault conditions.
• Warning conditions.
• Communication status.
• Operating history.

This information can help maintenance personnel identify abnormal conditions before they develop into major equipment failures.

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20. Installation Considerations

Because the drive is approximately 1,200 kg, installation requires more planning than a small inverter.

Important considerations include:

Floor Loading

The installation structure must be capable of supporting the cabinet and associated equipment.

Transportation

The equipment may require specialized handling equipment.

Lifting

The approved lifting points and handling procedures should be followed for the actual cabinet configuration.

Ventilation

The room must provide adequate cooling airflow.

Cable Routing

Large motor cables require suitable routing, support and bending radius.

Control Wiring

Control and communication wiring should be separated appropriately from high-power wiring.

Grounding

Proper grounding and bonding are essential for both safety and electromagnetic performance.

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21. Maintenance Recommendations

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22. Five Related Models in the Same Series

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

The related catalog numbers are useful for understanding how the same product family scales upward or downward according to output-current requirements.

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23. Same-Series Comparison

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24. Recommended Related Model 1 — 910 A Class

20G11JC910JN0NNNNN

This model is positioned below the 1,040 A configuration.

It is useful when the motor’s rated current is lower and the application does not require the additional capacity of the 1,040 A model.

It can be considered for large pumps, fans, conveyors and process machinery.

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25. Recommended Related Model 2 — 1,090 A Class

20G11JC1K1JN0NNNNN

This is a higher-capacity option compared with the subject model.

It can be considered where the motor current approaches or exceeds the practical range of the 1,040 A configuration.

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26. Recommended Related Model 3 — 1,175 A Class

20G11JC1K2JN0NNNNN

This is another higher-current configuration in the same high-power family.

It is suitable for applications requiring greater motor capacity.

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27. Recommended Related Model 4 — 1,465 A Class

20G11JC1K4JN0NNNNN

This model is intended for applications requiring substantially more output current.

It is more appropriate for very large motors and high-power process equipment.

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28. Recommended Related Model 5 — Higher-Power Configuration

20G11JC1K5JN0NNNNN

This model can be considered when the motor application requires capacity beyond the 1,465 A class.

It belongs to the same general high-power PowerFlex 755 architecture.

For this type of very large configuration, the exact mechanical and electrical ratings should be matched to the final catalog configuration.

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29. Five Popular Models from the Same Brand

For comparison purposes, five commonly encountered drive models from the same brand family are shown below.

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30. Brand-Level Comparison

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31. Detailed Technical Parameter Table

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32. Advantages Compared with Smaller Drives

A major advantage of this model is that it is designed specifically for applications that exceed the practical capacity of compact drives.

For a small motor, a 1,040 A drive would obviously be excessive.

For a very large industrial motor, however, using an appropriately sized high-power drive can provide a much more practical solution.

The main benefits include:

1. High output-current capacity.
2. Large motor-power capability.
3. Industrial cabinet construction.
4. Networked control capability.
5. Adjustable motor speed.
6. Controlled acceleration.
7. Controlled deceleration.
8. Extensive monitoring and diagnostics.
9. Suitable for large process systems.
10. Flexible application across pumps, fans, conveyors and other rotating equipment.

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33. Important Selection Notes

The most important parameter when replacing or selecting this type of drive is not simply the motor’s kW rating.

The following should be checked:

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34. Overall Evaluation

The 20G11JC1K0JN4NNNNN is a large industrial PowerFlex 755 variable-frequency drive designed for high-power three-phase motor applications.

Its key electrical characteristics are approximately:

400 VAC

Three Phase

1,040 A

630 kW Light Duty

560 kW Normal Duty

500 kW Heavy Duty

Frame 9

Forced-Air Cooling

IP54 / NEMA Type 12

Embedded EtherNet/IP

The approximate mechanical characteristics are:

2300 mm × 1300 mm × 800 mm

Approximately 1,200 kg

The product is best suited to large industrial equipment rather than small or medium-sized machines.

Its strongest application areas include large pumps, fans, blowers, conveyors, mining machinery, cement equipment, material-handling systems, steel-processing equipment and other high-power process machinery.

The major advantage of this configuration is its combination of high output current, high motor-power capability, industrial enclosure construction, network integration and flexible motor-control functionality.

The JN4 configuration should be distinguished from visually similar catalog numbers because the suffix represents a particular option arrangement. When replacing an existing drive, the complete catalog number should therefore be matched rather than selecting a replacement based only on the 1,040 A rating.

For preliminary engineering, the approximate 2300 × 1300 × 800 mm size and 1,200 kg weight should be allowed for. For final installation, transportation and cabinet-layout work, the exact mechanical configuration should be used because accessories and option selections can change the final dimensions and weight.