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Allen-Bradley 20G14TE460AN0NNNNN — PowerFlex 755 High-Power AC Drive

1. Product Overview

The 20G14TE460AN0NNNNN is a high-power industrial variable frequency drive designed for large three-phase AC motors and demanding industrial machinery.

It belongs to the PowerFlex 755 series within the PowerFlex 750 Series product family. The drive is intended for applications where large motor capacity, adjustable speed, controlled acceleration, and reliable operation are required.

With a high-current configuration, this model is particularly suitable for large pumps, fans, blowers, conveyors, compressors, mixers, material-handling equipment, and other process machinery.

The drive uses a DC input with precharge configuration and an air-cooled high-power design. It is intended to be installed as part of an engineered industrial electrical system rather than as a small standalone machine drive.

The model is positioned in the upper range of the high-power PowerFlex 755 configurations. Its approximately 460 A Normal-Duty current class makes it suitable for substantial motor applications, with the actual usable motor horsepower determined by duty rating, motor voltage, motor nameplate current, overload requirements, and application characteristics.

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2. Brand and Product Series

The PowerFlex 755 platform is designed for applications where the motor must operate at adjustable speed and where the drive needs to be integrated into a larger industrial control system.

The platform is suitable for applications ranging from process equipment to large rotating machinery.

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3. Main Technical Parameters

The 460 A rating places this model among the larger high-power configurations of the PowerFlex 755 platform.

The actual motor size should not be selected solely from horsepower. Motor full-load current, operating voltage, duty cycle, overload requirements, acceleration time, torque characteristics, ambient temperature, and altitude should all be considered.

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4. Duty Ratings

The drive can be evaluated according to different application duty categories.

Light Duty

Light-Duty operation is particularly relevant to variable-torque equipment such as centrifugal pumps and fans.

These loads generally have increasing torque requirements as speed increases.

Normal Duty

Normal Duty provides a broad operating range for general industrial motor applications.

It can be considered for process equipment, conveyors, machinery, and other applications where the motor operates under relatively predictable loading.

Heavy Duty

Heavy Duty is intended for more demanding applications where greater overload capability and higher torque performance are required.

Examples can include heavily loaded conveyors, mixers, and other machinery with significant starting or operating torque requirements.

The actual drive selection should always be based on the motor’s nameplate current and application duty rather than horsepower alone.

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5. Product Working Principle

The 20G14TE460AN0NNNNN controls an AC motor by producing a controlled three-phase output.

The drive adjusts output frequency and voltage according to the motor-control requirements.

Changing the output frequency changes the motor operating speed.

This allows the connected machine to operate according to the actual production requirement instead of operating continuously at one fixed speed.

For example, a pump may only need 70% speed during part of the production cycle.

A fan may need reduced speed when the ventilation demand is lower.

A conveyor may need to accelerate gradually before reaching production speed.

A mixer may need different speeds during different stages of processing.

The drive provides the electrical control needed to accommodate these operating conditions.

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6. DC Input and Precharge Configuration

The 20G14TE460AN0NNNNN uses a DC input with precharge arrangement.

High-power drive systems contain a DC-link section that must be energized in a controlled manner.

The precharge arrangement manages the initial charging process before normal operation.

This type of architecture is useful in engineered high-power systems where a DC bus or coordinated drive electrical architecture is required.

The DC input system must be designed together with the appropriate electrical protection, isolation, grounding, bus components, and control equipment.

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7. Frame 8 Construction

The drive uses a Frame 8 high-power mechanical platform.

Frame 8 equipment is intended for large industrial installations.

The installation therefore requires considerably more planning than a compact motor drive.

Important factors include:

• Electrical cabinet dimensions.
• Structural support.
• Cooling airflow.
• Power cable routing.
• Motor cable routing.
• Control cable routing.
• Grounding.
• Service clearance.
• Maintenance access.
• Lifting and transportation.
• Heat dissipation.
• Equipment room ventilation.

The physical installation should be planned around the complete configured drive assembly.

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8. Dimensions and Weight

For this high-power model, the exact dimensions and weight should be confirmed from the final configured equipment before cabinet fabrication, transportation, structural calculations, or lifting.

The weight can vary depending on the complete configuration and associated hardware.

Because this is a large industrial drive, mechanical handling equipment should be used rather than manual lifting.

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9. Product Applications

Large Pumping Systems

The drive is well suited to large pumping applications.

Typical uses include:

• Industrial water pumps.
• Cooling-water pumps.
• Process-water systems.
• Wastewater systems.
• Water-treatment facilities.
• Large circulation pumps.
• Industrial pumping stations.
• Irrigation systems.
• Chemical-process pumping.

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

Instead of continuously running the motor at maximum speed, the drive can adjust the motor speed according to actual process demand.

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Industrial Fans

Large industrial fans can require substantial motor power.

The drive can regulate fan speed according to airflow requirements.

Typical applications include:

• Industrial ventilation.
• Furnace ventilation.
• Dust collection.
• Process exhaust.
• Cooling systems.
• Air-handling equipment.
• Factory ventilation.
• Extraction systems.

Variable-speed operation can provide better process control than fixed-speed operation.

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Large Blowers

Blowers are commonly used in industrial processes where airflow and pressure must be controlled.

Potential applications include:

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

The motor duty should be evaluated carefully because blower torque characteristics vary according to the equipment design.

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Conveyor Systems

Large conveyors can have significant inertia and starting torque requirements.

The drive can provide controlled acceleration to reduce mechanical shock.

This can be beneficial for:

• Mining conveyors.
• Bulk-material conveyors.
• Cement plants.
• Aggregate handling.
• Production lines.
• Warehouse material handling.
• Processing equipment.

The Heavy-Duty rating should be considered when the conveyor has substantial starting or operating torque requirements.

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Compressors

Large industrial compressors can require considerable motor capacity.

The drive can be considered for compatible compressor applications where adjustable motor speed is desirable.

Potential uses include:

• Process compressors.
• Industrial air systems.
• Manufacturing equipment.
• Gas-handling equipment.
• Process-air systems.

The compressor’s torque curve and operating cycle should be reviewed before selecting the final duty rating.

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Mixers and Agitators

Industrial mixers can experience changing load conditions.

Material viscosity may change throughout the production process.

The drive allows motor speed to be adjusted to suit different stages of the mixing operation.

Applications can include:

• Chemical processing.
• Industrial production.
• Material processing.
• Large batch systems.
• Process mixing.

High-torque applications should be evaluated according to actual motor current and overload requirements.

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10. Main Product Advantages

High Current Capacity

The 460 A Normal-Duty current class provides substantial motor-control capability.

This makes the drive suitable for large industrial motors and high-capacity machinery.

It can be considered when smaller drive configurations do not provide sufficient current capacity.

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Large Motor Capability

The drive can support large motor applications depending on the selected duty category.

Approximate capacity classes are:

• 500 HP Light Duty.
• 500 HP Normal Duty.
• 400 HP Heavy Duty.

The actual selection should be based on motor nameplate current and operating conditions.

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Adjustable Speed Control

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

This is particularly useful in:

• Pumping.
• Ventilation.
• Conveying.
• Material handling.
• Processing.
• Mixing.
• Industrial production.

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Controlled Acceleration

Large motors can impose significant mechanical stress during direct starting.

The drive allows controlled acceleration, which can provide smoother motor starting.

This can help reduce mechanical shock on:

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

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Flexible Industrial Applications

The drive is suitable for a broad range of large industrial equipment.

It can be used in:

• Manufacturing.
• Water treatment.
• Mining.
• Cement.
• Metals processing.
• Material handling.
• Chemical processing.
• General process industries.

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DC Input Architecture

The DC input with precharge arrangement allows the drive to be considered for suitable high-power DC electrical architectures.

This can be particularly useful when multiple drive systems or engineered DC-bus arrangements are part of the overall electrical design.

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Forced-Air Cooling

High-power electronic equipment generates considerable heat.

The forced-air cooling arrangement provides active heat removal from the drive.

Proper ventilation and thermal design remain essential for reliable operation.

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11. Five Recommended Same-Series or Related Models

These models provide a useful selection range around the 460 A configuration.

The 20G14TE295AN0NNNNN is suitable when the application requires less current.

The 20G14TE355AN0NNNNN provides a mid-range high-power option.

The 20G14TE395AN0NNNNN is another closely positioned alternative.

The 20G14TE435AN0NNNNN is particularly close to the requested model in terms of overall capacity.

The 20G14TE510AN0NNNNN is suitable when additional output-current capacity is required.

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12. Same-Series Technical Comparison

The 20G14TE460AN0NNNNN sits in the upper portion of this high-power range.

It provides a significant increase in capacity compared with the 295 A, 355 A, and 395 A models while remaining below the 510 A configuration.

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13. Five Popular Models from the Same Brand

These models cover a broad range of industrial motor-control requirements.

The lower-current versions are more appropriate for smaller machines and medium-sized process equipment.

The high-current versions are intended for large industrial motors and heavy process machinery.

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14. Popular Model Comparison

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15. Typical Industries

The 20G14TE460AN0NNNNN can be considered for many industrial sectors where large motors are used.

Water and Wastewater

Large pumps, circulation systems, aeration equipment, and water-treatment machinery can benefit from variable-speed motor control.

Mining

Large conveyors, fans, pumps, and material-handling systems often require substantial motor power and controlled acceleration.

Cement

Cement production uses large fans, conveyors, pumps, crushers, and process equipment.

Metals and Steel

Industrial fans, pumps, conveyors, cooling systems, and other high-power rotating machinery can require large variable frequency drives.

Chemical Processing

Pumps, mixers, blowers, and process equipment often require adjustable motor speed.

Manufacturing

Large production machinery can use variable-speed motor control to coordinate equipment with production requirements.

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16. Installation Requirements

The installation environment should be kept within the applicable operating conditions for the drive.

The surrounding equipment should also be designed to prevent excessive heat, dust accumulation, moisture, and restricted airflow.

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17. Cooling and Thermal Design

Thermal management is especially important for high-power drives.

The drive produces heat during normal operation, and the cooling system must continuously remove this heat.

The installation should provide:

• Adequate air intake.
• Adequate air exhaust.
• Proper cabinet ventilation.
• Clean cooling passages.
• Proper fan operation.
• Suitable ambient temperature.
• Appropriate service clearance.

Dust accumulation can restrict airflow and reduce cooling effectiveness.

Regular inspection and cleaning should therefore form part of routine maintenance.

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18. Grounding and EMC Considerations

A high-power motor-drive installation should use appropriate grounding and bonding practices.

The drive enclosure, motor frame, cabinet, and associated equipment should be incorporated into the industrial grounding system.

Power cables and control cables should be routed carefully.

Where possible, high-power motor cables should be separated from sensitive control and communication wiring.

Proper cable installation can help reduce unwanted electrical interference and improve system reliability.

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19. Motor Selection

The most important information for selecting a drive is the motor nameplate data.

The following information should be checked:

A motor with a particular horsepower rating does not automatically require a specific drive.

The motor’s actual full-load current and application duty should be used for final selection.

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20. Maintenance Recommendations

Routine inspection can help maintain reliable operation.

Important maintenance areas include:

• Cooling fans.
• Air passages.
• Filters.
• Power connections.
• Grounding connections.
• Motor cables.
• Cabinet temperature.
• Fault history.
• Mechanical mounting.
• Signs of overheating.

Repeated overcurrent, overtemperature, or DC-bus-related faults should be investigated rather than simply reset.

A recurring fault may originate from the motor, mechanical equipment, power system, cooling system, or installation conditions.

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21. Overall Advantages

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22. Final Technical Summary

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Conclusion

The 20G14TE460AN0NNNNN is a high-power PowerFlex 755 variable frequency drive intended for large industrial motor-control applications.

Its 460 A Normal-Duty current class, approximately 500 HP Normal-Duty capacity, and Frame 8 construction make it suitable for substantial industrial equipment.

It is particularly appropriate for large pumps, fans, blowers, conveyors, compressors, mixers, material-handling systems, and other process machinery where adjustable motor speed and controlled acceleration are important.

The DC input with precharge configuration provides flexibility for appropriately engineered high-power electrical systems.

Its main advantages are high current capacity, large motor capability, adjustable speed control, controlled acceleration, flexible duty selection, forced-air cooling, and suitability for large industrial installations.

For mechanical planning, the exact dimensions and weight in kg should be confirmed for the final configured unit before transportation, lifting, cabinet fabrication, or structural installation.