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1. Product Overview

The 20G11TD430JN0NNNNN is a high-performance industrial AC drive from the PowerFlex 755 series. It is designed for large three-phase AC motors used in demanding industrial applications where high current capacity, adjustable motor speed, controlled acceleration and reliable continuous operation are required.

This model is designed for a 480 VAC, three-phase power supply and has a 430 A Normal Duty output-current rating. Its principal motor rating is 350 HP under Normal Duty, equivalent to approximately 260 kW.

For applications with different overload requirements, the same drive class can be used at approximately 400 HP Light Duty or 300 HP Heavy Duty.

The drive uses forced-air cooling, an open-type/IP00 construction, Frame 8 architecture, an AC input with precharge, and DC terminals. The configuration also includes embedded industrial Ethernet communication capability, standard protection and filtering.

This is a large industrial drive intended for integration into an electrical cabinet, MCC arrangement or other suitably protected industrial installation. It is not a compact drive intended for small standalone machines.

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2. Brand and Product Series

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3. Detailed Technical Specifications

*Weight can vary significantly according to the exact drive assembly, enclosure arrangement and installed options. The final product label and mechanical drawing should be used for shipment, lifting and cabinet-design calculations.

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4. Electrical Rating

The most important electrical characteristics of the 20G11TD430JN0NNNNN are its 480 VAC input and 430 A Normal Duty output capability.

The 430 A rating is particularly important when matching the drive to a motor.

Motor horsepower alone should not be used as the only selection criterion. The motor’s actual full-load current, overload requirement, acceleration torque, duty cycle and environmental conditions should also be evaluated.

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5. Duty Classification

The PowerFlex 755 drive family provides different current and horsepower ratings according to the application duty.

The 350 HP Normal Duty rating is the primary rating normally associated with this model.

For a machine that experiences frequent starts, high acceleration torque, shock loading or significant overload conditions, Heavy Duty sizing should be evaluated carefully.

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6. Product Construction

The 20G11TD430JN0NNNNN uses a large Frame 8 architecture.

The open-type/IP00 construction means that the drive is normally incorporated into a suitable electrical enclosure rather than being installed exposed to the surrounding industrial environment.

The forced-air cooling system removes heat generated by the power semiconductor components during operation.

Because the drive operates at several hundred amperes, proper cabinet ventilation is an important part of the installation.

The system should provide adequate airflow and sufficient separation from other heat-generating components.

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7. Dimensions and Weight

Large PowerFlex 755 drives should be evaluated as complete assemblies because dimensions can change depending on the mechanical configuration.

A useful reference range for a Frame 8 installation is shown below.

*The exact shipping or assembled weight can differ according to the configuration. The final mechanical drawing and product nameplate should be used when calculating transportation and lifting requirements.

The dimensions of the drive itself should not be confused with the dimensions of the complete cabinet.

A complete industrial cabinet can contain:

• AC input equipment
• Disconnect equipment
• Circuit protection
• Busbars
• Drive assembly
• Control components
• Communication equipment
• Terminal blocks
• Cooling equipment
• Field wiring
• Motor connections

Consequently, the final installed system can be considerably larger than the drive itself.

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8. Product Introduction

The 20G11TD430JN0NNNNN is intended for applications where an industrial motor needs controlled speed rather than simple fixed-frequency operation.

The drive converts the incoming AC electrical power into a controlled three-phase output that can regulate the motor’s speed and operating behavior.

This makes it possible to start large motors more smoothly, control motor speed according to production requirements and manage acceleration and deceleration.

For large industrial machinery, these functions can be especially valuable because sudden motor starting can place considerable stress on mechanical components.

A properly configured AC drive can therefore become an important part of the overall machine-control system rather than merely acting as a motor starter.

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9. Main Product Features

9.1 430 A High-Current Capacity

The drive provides a 430 A Normal Duty output rating.

This makes it suitable for large motors and equipment where a lower-current drive would not provide sufficient capacity.

The high-current architecture is particularly useful for large conveyors, pumps, fans, compressors and material-processing machinery.

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9.2 350 HP Normal Duty Capability

The 350 HP Normal Duty rating corresponds to approximately 260 kW.

This places the drive in a high-power industrial category.

It is designed for large motors rather than small machine motors.

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9.3 400 HP Light Duty Capability

Under Light Duty conditions, the drive can be used for motors up to approximately 400 HP.

This provides additional flexibility when the mechanical load has a less demanding overload profile.

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9.4 300 HP Heavy Duty Capability

For Heavy Duty operation, the rating is approximately 300 HP.

This reflects the fact that demanding overload conditions require more current capacity and thermal margin.

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9.5 480 VAC Three-Phase Input

The drive is designed around the common industrial 480 VAC three-phase voltage class.

This makes it suitable for many large industrial electrical systems.

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9.6 Embedded Ethernet/IP

The embedded Ethernet/IP capability allows the drive to participate in industrial automation networks.

This can simplify communication between the drive and other automation equipment.

Typical functions can include:

• Speed reference
• Start/stop commands
• Status monitoring
• Fault information
• Drive parameter access
• Process data exchange
• Diagnostic information

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9.7 AC Input With Precharge

The AC input arrangement includes precharge.

Precharge is particularly important for high-power drive systems because it controls the initial charging process of the internal DC bus.

This helps manage startup electrical conditions and reduces unnecessary stress on the DC-link components.

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9.8 DC Terminals

The inclusion of DC terminals provides additional flexibility for large drive-system architectures.

In suitable applications, DC-bus connections can be incorporated into coordinated drive systems.

The actual DC-bus arrangement should always be designed according to the complete electrical system.

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10. Product Applications

10.1 Conveyor Systems

The 20G11TD430JN0NNNNN is well suited to large conveyor systems.

A conveyor motor can require substantial torque during acceleration, particularly when the conveyor is loaded.

Using an AC drive provides controlled acceleration rather than applying full motor voltage immediately.

Potential applications include:

• Mining conveyors
• Aggregate conveyors
• Cement conveyors
• Bulk-material conveyors
• Manufacturing conveyors
• Warehouse conveyors
• Port handling equipment
• Heavy industrial transport systems

Variable-speed operation also allows conveyor speed to be matched to production requirements.

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11. Pump Systems

Large industrial pumps are another important application.

Pump speed can be adjusted according to process requirements, which can be useful when flow or pressure changes throughout the production process.

Potential applications include:

• Water treatment
• Industrial water systems
• Cooling-water systems
• Mining dewatering
• Process pumps
• Irrigation systems
• Circulation pumps
• Industrial pumping stations

For variable-torque pump applications, reducing motor speed can also reduce energy consumption significantly under appropriate operating conditions.

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12. Fan and Blower Systems

Large fans and blowers frequently require variable airflow.

Instead of continuously operating the motor at maximum speed, the drive can adjust speed according to the required airflow.

Applications include:

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

This can provide better process control and potentially reduce operating costs.

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13. Compressor Systems

Large compressors can have substantial starting requirements.

The drive can provide controlled acceleration and adjustable speed when the compressor is designed for variable-speed operation.

Potential applications include:

• Industrial compressors
• Process compressors
• Air-compression systems
• Gas-handling equipment
• Manufacturing systems

Compressor selection should always consider the compressor’s specific speed range and torque characteristics.

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14. Mining and Aggregate Equipment

The high-current capability makes this drive suitable for demanding mining and aggregate applications.

Potential applications include:

• Crushers
• Conveyors
• Screens
• Feeders
• Pumps
• Fans
• Material-processing equipment
• Bulk handling machinery

These applications can have significant mechanical shock and overload requirements, so Heavy Duty selection should be evaluated where appropriate.

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15. Material Handling Applications

The drive can be applied to large material-handling systems requiring adjustable speed and controlled acceleration.

Examples include:

• Heavy conveyors
• Feeders
• Transfer equipment
• Bulk material systems
• Large production-line transport
• Industrial lifting-related equipment where the complete drive system is properly engineered

The mechanical system must be evaluated carefully when braking, regenerative energy or precise positioning is required.

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16. Industrial Process Machinery

The drive can also be used in large process machinery.

Typical examples include:

• Mixers
• Agitators
• Large rotating machines
• Process equipment
• Extrusion machinery
• Production equipment
• Industrial machine systems

The ability to control motor speed can help maintain a consistent production process.

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17. Main Advantages

17.1 High Power Capability

The first major advantage is its ability to control motors in the several-hundred-horsepower range.

The 350 HP Normal Duty capability makes it suitable for applications where compact VFD products would not have sufficient power capacity.

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17.2 High Output Current

The 430 A Normal Duty output rating provides substantial current capacity.

This is useful for large motors that require significant current during acceleration and normal operation.

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17.3 Flexible Speed Control

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

This is useful for:

• Conveyors
• Pumps
• Fans
• Blowers
• Compressors
• Processing equipment

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17.4 Controlled Acceleration

Starting a large motor directly across the line can create high electrical and mechanical stress.

The drive can provide controlled acceleration, which can reduce sudden mechanical loading on:

• Couplings
• Gearboxes
• Belts
• Shafts
• Bearings
• Conveyor systems

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17.5 Controlled Deceleration

Controlled deceleration can also improve machine operation.

The exact braking method depends on the application and installed configuration.

For applications with substantial regenerative energy, the braking system must be selected separately and engineered correctly.

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17.6 Industrial Network Integration

Embedded Ethernet/IP provides a convenient way to integrate the drive into an industrial automation system.

This can allow the motor drive to exchange operating commands and status information with the machine-control system.

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17.7 Flexible Industrial Application Range

One of the strongest characteristics of the PowerFlex 755 family is its broad application range.

The same general platform can be used for:

• Pumps
• Fans
• Conveyors
• Compressors
• Mixers
• Process machinery
• Material handling
• Mining equipment

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18. Energy-Saving Potential

An AC drive does not automatically guarantee energy savings in every application.

However, variable-speed operation can provide substantial savings in applications where motor speed is directly related to process demand.

This is particularly relevant for:

• Pumps
• Fans
• Blowers

For these applications, reducing motor speed can reduce the required mechanical power considerably.

The actual savings depend on the system design, operating hours, load profile, process requirements and control strategy.

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19. Maintenance Advantages

The forced-air design makes airflow management an important maintenance consideration.

Regular maintenance should include:

• Cooling fan inspection
• Airflow inspection
• Cabinet ventilation inspection
• Electrical connection inspection
• Grounding inspection
• Motor cable inspection
• Dust removal
• Environmental condition checks
• Drive fault-history review
• Parameter backup

In dusty environments such as mining, cement and aggregate plants, maintaining clean airflow paths is especially important.

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20. Installation Considerations

The 20G11TD430JN0NNNNN should be installed by personnel familiar with high-power AC drives and industrial electrical systems.

Important considerations include:

Electrical

• 480 VAC three-phase supply
• Correct upstream protection
• Correct cable sizing
• Correct grounding
• Motor cable selection
• Short-circuit considerations
• EMC considerations
• Correct control wiring

Mechanical

• Cabinet dimensions
• Drive weight
• Cabinet mounting
• Lifting arrangements
• Floor loading
• Service access

Thermal

• Cabinet airflow
• Cooling capacity
• Ambient temperature
• Heat dissipation
• Separation from other heat-generating equipment

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21. Five Recommended Models in the Same Series

The following models are close relatives of the 20G11TD430JN0NNNNN and are particularly useful when selecting a higher-capacity or alternative PowerFlex 755 configuration.

These models form a useful progression above the 430 A version.

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22. Same-Series Model Comparison

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23. Five Related Models From the Same Brand

For applications outside the exact 430 A configuration, the following models are useful related choices.

The first two and the 617 A model are especially relevant when the application remains within the 480 VAC PowerFlex 755 platform.

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24. Five Popular Models From the Same Brand

For a broader selection, the following models cover different power ranges and application requirements.

These models occupy different points within the overall product range.

The PowerFlex 525 models are much smaller and are better suited to compact machinery.

The PowerFlex 753 family is intended for more advanced industrial applications and occupies a middle-to-high performance position.

The PowerFlex 755 family, including the 20G11TD430JN0NNNNN, is aimed at larger and more demanding applications.

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25. Product Family Comparison

The 20G11TD430JN0NNNNN is positioned toward the high-power end of this range.

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26. Choosing the Right Model

When selecting a replacement or alternative model, the following parameters should be checked.

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27. Advantages Compared With a Smaller Drive

The 20G11TD430JN0NNNNN has a major advantage when controlling a large motor: it provides sufficient current and power capacity for equipment that would be beyond the range of compact VFDs.

A smaller drive may be cheaper and physically easier to install, but it cannot simply be substituted for a 430 A drive when the motor requires significantly higher current.

The large PowerFlex 755 architecture also provides more options for sophisticated industrial applications.

This is particularly important for:

• Large production lines
• Mining systems
• Heavy conveyors
• Large pumps
• Large fans
• Process equipment
• High-inertia machinery

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28. Advantages for OEM Machine Builders

For machine builders, the PowerFlex 755 platform can provide a common drive architecture across different machine sizes.

A manufacturer may use smaller drives for auxiliary motors and larger PowerFlex 755 units for the primary motor.

This can simplify the overall control philosophy and provide a consistent approach to:

• Motor control
• Parameter management
• Fault handling
• Communication
• Diagnostics
• Maintenance
• Operator control

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29. Advantages for Industrial End Users

For an industrial plant, the main benefits include flexible speed control, high motor-power capability and integration with a wider automation system.

A drive can also provide useful operating information such as:

• Motor speed
• Current
• Voltage
• Operating status
• Fault status
• Drive temperature
• Command frequency
• Output frequency

This information can help maintenance personnel identify operating problems before they become serious equipment failures.

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30. Typical Applications by Motor Size

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31. Maintenance Recommendations

A large air-cooled AC drive should receive regular inspection.

The cooling system is especially important.

Dust accumulation around the ventilation system can reduce cooling performance and increase operating temperature.

Recommended maintenance areas include:

1. Cooling fan condition.
2. Airflow path cleanliness.
3. Cabinet ventilation.
4. Electrical terminal tightness.
5. Grounding connections.
6. Motor cable condition.
7. Communication connections.
8. Drive fault history.
9. Operating temperature.
10. Parameter backup.
11. Environmental contamination.
12. Signs of overheating.

Maintenance intervals should be determined according to operating hours, environment and equipment criticality.

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32. Environmental Considerations

Because this is an IP00/open-type configuration, it should not be considered a weatherproof or dustproof standalone product.

It is normally installed inside an appropriate enclosure.

Particular attention should be paid to:

• Dust
• Moisture
• Condensation
• Corrosive gases
• Excessive heat
• Excessive vibration
• Airflow restrictions

Mining, cement, aggregate and chemical-processing facilities may require additional environmental protection.

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33. Why the 20G11TD430JN0NNNNN Is a Good Choice

The product is particularly attractive when the application requires a combination of:

• High motor power
• High output current
• Variable speed
• Controlled acceleration
• Industrial networking
• Large-frame construction
• High-performance motor control
• Integration with an automation system

It is substantially more capable than a compact general-purpose inverter and is designed specifically for applications where motor power and process requirements are significant.

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34. Overall Product Assessment

The 20G11TD430JN0NNNNN is a high-power, high-performance AC drive designed for large industrial motors.

Its key specification is the 430 A Normal Duty output rating, supporting approximately 350 HP / 260 kW under Normal Duty conditions.

The drive also supports approximately 400 HP Light Duty and 300 HP Heavy Duty applications.

The 480 VAC three-phase electrical class makes it suitable for a broad range of large industrial installations.

Its Frame 8 construction, forced-air cooling, open-type enclosure, embedded Ethernet/IP capability, AC input with precharge and DC terminals make it a strong choice for industrial automation systems requiring a large and flexible motor-control platform.

The product is particularly appropriate for conveyors, pumps, fans, blowers, compressors, mining equipment, material-handling systems and large process machinery.

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35. Quick Technical Summary

*Exact weight depends on the complete configuration and installation arrangement.

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36. Final Recommendation

For an application requiring approximately 350 HP at 480 VAC, the 20G11TD430JN0NNNNN is a strong high-power industrial-drive choice.

If the motor requires more current or higher power, the next models worth considering are 20G11TD485JN0NNNNN, 20G11TD545JN0NNNNN, 20G11TD617JN0NNNNN, 20G11TD710JN0NNNNN and 20G11TD740JN0NNNNN.

If the application uses a smaller motor, a PowerFlex 753, PowerFlex 525 or PowerFlex 523 configuration may be more economical and physically smaller.

For a large conveyor, mining system, pump, fan, blower, compressor or process machine, the PowerFlex 755 family provides a much more appropriate platform than a compact general-purpose drive.

The 20G11TD430JN0NNNNN is best characterized as a large-frame, 480 VAC, 430 A, 350 HP Normal Duty industrial AC drive designed for demanding motor-control applications. Its combination of high current capacity, flexible duty ratings, industrial networking, controlled acceleration and large-motor capability makes it suitable for a wide range of heavy industrial equipment.