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20G11NE052AA0NNNNN — Detailed Product Information and Technical Specification

1. Product Overview

The 20G11NE052AA0NNNNN is a PowerFlex 755 series AC variable frequency drive (VFD) intended for industrial three-phase motor speed and torque control.

It is part of the higher-capacity section of the 600 VAC-class PowerFlex 755 range, with an output current rating of approximately 52 A. This capacity makes it suitable for medium-to-large industrial motors and machinery where a smaller drive may not provide sufficient current capability.

The drive is designed for applications that require adjustable motor speed, controlled acceleration, controlled deceleration, torque management, motor protection functions, diagnostics, and integration into an industrial automation system.

Typical applications include conveyors, pumps, fans, blowers, feeders, mixers, material-handling systems, production machinery, process equipment, and other industrial motor-driven equipment.

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2. Brand and Product Series

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3. Model Identification

The complete catalog number is:

20G11NE052AA0NNNNN

The complete catalog number should be retained when ordering, replacing, or comparing equipment.

The characters within a complete catalog number identify different electrical and hardware configuration characteristics. Therefore, two models that look similar at the beginning of their catalog numbers should not automatically be considered identical.

For replacement work, it is important to compare:

• Input voltage
• Output current
• Duty rating
• Frame size
• Input configuration
• Control configuration
• Braking arrangement
• Communication requirements
• EMC requirements
• Operator interface
• Enclosure arrangement
• Physical mounting dimensions

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4. Main Technical Parameters

The electrical ratings above are intended as practical selection information. The exact rating applicable to a particular installation should be checked against the motor nameplate, required duty, ambient conditions, and the final drive configuration.

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5. 52 A Output Current

The most important characteristic of this model is its approximately 52 A output-current class.

This places the unit above smaller models such as 32 A and 41 A versions.

The additional current capacity makes the model suitable for motors and loads that require more output current.

A simplified capacity progression can be viewed as:

32 A → 41 A → 52 A

The 52 A model is therefore useful when the electrical load has exceeded the practical capacity of a smaller model but does not require moving to a substantially larger drive.

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6. Approximate Motor Capacity

The model is generally associated with approximately:

50 HP normal-duty operation

or approximately:

37 kW normal-duty operation

For applications requiring greater overload performance, the applicable heavy-duty rating is lower, approximately:

40 HP / 30 kW class

The actual selection should be based primarily on motor current and application duty rather than horsepower alone.

For example, two motors with the same horsepower rating can have different full-load currents depending on motor efficiency, voltage, power factor, construction, and operating conditions.

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7. Normal-Duty Applications

Normal-duty operation is appropriate for applications where the motor load is comparatively predictable and the drive does not have to provide severe overload continuously.

Typical examples include:

• Centrifugal pumps
• Fans
• Blowers
• Standard conveyors
• Air-handling equipment
• General process machinery
• Material transfer systems
• Production equipment

For these applications, the approximately 50 HP rating provides a useful capacity range.

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8. Heavy-Duty Applications

Heavy-duty operation places greater demands on the drive.

Applications can involve:

• Higher starting torque
• Repeated acceleration
• High mechanical inertia
• Rapid speed changes
• Frequent starts and stops
• Higher overload requirements
• Variable mechanical loading

The approximate heavy-duty rating for this capacity class is around 40 HP.

The exact application should be evaluated using motor full-load current, overload requirements, acceleration time, load torque, and operating cycle.

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9. Voltage Class

The 20G11NE052AA0NNNNN belongs to the 600 VAC-class group.

This is important when selecting a drive because a 480 VAC-class drive and a 600 VAC-class drive are not automatically interchangeable.

The electrical system should be evaluated for:

• Nominal line voltage
• Actual operating voltage
• Three-phase supply
• Voltage tolerance
• Motor voltage
• Available fault current
• Grounding arrangement
• Installation environment

A correct voltage match is one of the first requirements in drive selection.

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10. Variable-Frequency Motor Control

The drive converts incoming electrical power into controlled variable-frequency output power for the motor.

This allows the motor to operate at different speeds according to the process requirement.

Instead of operating the motor at only one fixed speed, the machine can use different speed references.

For example:

This flexibility is one of the main reasons for using a VFD instead of a simple motor starter.

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11. Controlled Acceleration

The drive can provide controlled motor acceleration.

This is especially valuable for equipment with high inertia.

Without controlled acceleration, a motor can impose a sudden mechanical load on:

• Shafts
• Gearboxes
• Couplings
• Belts
• Chains
• Bearings
• Rollers
• Conveyor structures

Controlled acceleration allows the machine to reach operating speed progressively.

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12. Controlled Deceleration

Controlled deceleration is another important feature.

The motor can be instructed to reduce speed over a defined period instead of stopping abruptly.

This can improve:

• Machine stability
• Product handling
• Mechanical life
• Operator safety
• Process control
• Stopping consistency

For high-inertia loads, the deceleration arrangement must be designed appropriately because the motor can return energy to the drive during braking.

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13. Braking Considerations

Braking requirements depend heavily on the machine.

A slowly rotating fan may require little braking capability.

A heavily loaded conveyor may require substantially more.

Applications with significant regenerative energy may require an appropriate braking arrangement.

Potential applications include:

• High-inertia conveyors
• Rollers
• Material-handling machinery
• Rapid-stop equipment
• Machines with frequent deceleration

The exact braking hardware and resistor arrangement should be selected according to the machine’s actual kinetic energy and stopping cycle.

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14. Forced-Air Cooling

The drive uses forced-air cooling to remove heat from its power electronics.

At approximately 52 A output capacity, thermal management becomes an important part of system design.

The installation should provide adequate:

• Airflow
• Ventilation
• Cabinet space
• Cooling clearance
• Ambient-temperature control
• Heat dissipation

The cabinet should not be designed so that hot exhaust air from the drive is immediately recirculated into its intake.

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15. Mechanical Size and Weight

For preliminary engineering and cabinet planning, the 20G11NE052AA0NNNNN should be treated as a larger frame-class drive than the 32 A and 41 A models.

A practical planning estimate is:

Weight: approximately 30–35 kg

A preliminary mechanical envelope can be treated as approximately:

700 × 350 × 350 mm class

These dimensions and weight figures are planning estimates, not fabrication dimensions.

Exact mounting-hole locations, terminal positions, clearances, and enclosure requirements should be confirmed against the specific hardware configuration before manufacturing a cabinet.

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16. Industrial Applications

The 20G11NE052AA0NNNNN can be used in a broad range of industrial motor-control applications.

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17. Conveyor Applications

Conveyors often require variable speed because production conditions change throughout the manufacturing process.

The drive can be used to provide:

• Controlled startup
• Adjustable running speed
• Smooth acceleration
• Smooth deceleration
• Controlled stopping
• Production-speed adjustment
• Integration with machine sequencing

A conveyor with a high-inertia load can particularly benefit from controlled acceleration because the drive can gradually build motor speed.

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18. Pump Applications

The drive is suitable for compatible pump applications.

Typical uses include:

• Process-water circulation
• Cooling systems
• Industrial fluid transfer
• Water treatment equipment
• Process supply systems
• Industrial pumping stations

For centrifugal pumps, reducing motor speed can provide a useful method of adjusting process flow.

The correct control strategy depends on the pump characteristics and the process requirements.

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19. Fan and Blower Applications

Fans and blowers frequently operate under changing airflow requirements.

The drive allows the motor speed to be adjusted instead of forcing the motor to operate continuously at maximum speed.

Potential applications include:

• Industrial ventilation
• Exhaust systems
• Cooling systems
• Process ventilation
• Air-handling equipment
• Machine cooling

This makes variable-speed operation useful where airflow demand changes throughout the production cycle.

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20. Material-Handling Applications

The drive can be used on larger material-handling equipment requiring controlled motor operation.

Typical applications include:

• Conveyor systems
• Transfer equipment
• Feed systems
• Rollers
• Material transport machinery
• Automated handling equipment

The drive can help coordinate motor speed with other equipment in the production process.

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21. Process Machinery

Process machinery may require several different operating speeds.

For example:

This flexibility makes the drive useful for process-oriented machinery.

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22. Main Product Advantages

22.1 Higher Current Capacity

The approximately 52 A output rating provides significantly more capacity than smaller 32 A and 41 A models in the same general range.

This makes the drive appropriate for larger motors and heavier industrial equipment.

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22.2 Approximately 50 HP Normal-Duty Capacity

The approximately 50 HP normal-duty range provides a useful capacity for medium-to-large machinery.

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22.3 600 VAC Compatibility

The 600 VAC class allows the drive to be used in compatible industrial electrical systems.

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22.4 PowerFlex 755 Platform

The PowerFlex 755 family is designed for industrial motor-control applications requiring more functionality than a basic compact VFD.

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22.5 Variable-Speed Operation

Motor speed can be adjusted according to the process.

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22.6 Controlled Acceleration

Gradual acceleration can reduce mechanical shock.

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22.7 Controlled Deceleration

Controlled stopping can improve machine behavior.

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22.8 Industrial Automation Integration

The drive is suitable for integration with larger industrial automation systems.

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22.9 Flexible Application Range

One drive platform can be used across many different machine types.

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22.10 Diagnostic Functions

Operating information, alarms, and fault conditions can assist maintenance and troubleshooting.

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23. Advantages for Machine Builders

For machine builders, the drive provides a flexible motor-control solution for equipment requiring adjustable speed.

A typical arrangement can be represented as:

Industrial Controller

↓

Control / Communication Network

↓

20G11NE052AA0NNNNN

↓

Three-Phase Motor

↓

Mechanical Load

This allows motor operation to be incorporated into the overall machine sequence.

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24. Advantages for System Integrators

System integrators can use related drive models throughout a production system.

For example, a larger manufacturing line could use:

• Smaller drives for auxiliary fans
• Medium drives for conveyors
• 32 A drives for medium motors
• 41 A drives for larger auxiliary machinery
• 52 A drives for larger process motors

This provides a relatively consistent architecture while allowing different current capacities.

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25. Advantages for Maintenance

A common drive platform can make maintenance more straightforward when multiple machines use related equipment.

Maintenance personnel can become familiar with:

• Drive parameters
• Motor settings
• Fault codes
• Operating status
• Communication arrangements
• Diagnostic information
• Replacement procedures
• Acceleration and deceleration settings

This can simplify troubleshooting across multiple machines.

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26. Motor Selection

The motor should be selected according to its actual electrical and mechanical requirements.

The motor nameplate current should be given greater importance than horsepower alone.

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27. Recommended Same-Series or Related Models

The following models are useful for comparison around the same PowerFlex 755 family and nearby capacity range.

The above alternatives are intended for capacity comparison.

Exact catalog-number availability and suffix configuration should be verified before treating any one of them as a direct replacement.

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28. Same-Series Capacity Comparison

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29. Five Same-Brand Popular Related Models

For broader product comparison, the following models represent other commonly used drive capacities and families.

These models cover different voltage and capacity ranges and therefore should be regarded as related comparison products rather than automatic substitutes.

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30. Same-Brand Model Comparison

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31. 20G11NE052AA0NNNNN Compared With 20G11NE041AA0NNNNN

These two models are useful alternatives when selecting a drive around the 40–50 HP range.

The 52 A model is appropriate when the 41 A class does not provide enough current capacity.

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32. 20G11NE052AA0NNNNN Compared With 20G11NE032AA0NNNNN

The 52 A model provides substantially more current capacity, but it also requires more cabinet space and greater attention to heat dissipation.

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33. Application Selection Guide

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34. Cabinet Design Considerations

Because the 52 A model is physically and thermally larger than smaller drives, cabinet design becomes increasingly important.

The cabinet should provide sufficient space for:

• Drive mounting
• Power cables
• Motor cables
• Control wiring
• Communication cables
• Cooling airflow
• Service access
• Terminal access
• Maintenance clearance
• Heat dissipation

The approximate 700 × 350 × 350 mm class envelope can be used for early planning, but should not be used as the final fabrication dimension.

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35. Weight Considerations

The estimated product weight is:

Approximately 30–35 kg

This should be considered when designing the mounting structure.

Cabinet panels should be capable of supporting the drive without excessive vibration or deformation.

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36. Advantages in Production Systems

A variable-speed drive can provide more flexible machine operation than fixed-speed motor control.

For example, a production line may operate at:

Low Speed → Setup

Medium Speed → Normal Production

High Speed → Maximum Production

The drive can therefore become part of the machine’s process-control strategy rather than simply acting as a motor starter.

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37. Advantages for Energy Management

In suitable applications, particularly centrifugal pumps and fans, reducing motor speed can reduce the power required by the machine.

This can make variable-speed operation useful when the process does not require full motor speed continuously.

The actual energy benefit depends on:

• Load profile
• Motor efficiency
• Pump or fan characteristics
• Operating hours
• Speed range
• Process requirements

Therefore, energy savings should be calculated for the actual machine rather than assumed solely from the presence of a VFD.

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38. Advantages for Mechanical Protection

Controlled acceleration and deceleration can help reduce mechanical shock.

Potential benefits include reduced stress on:

• Gearboxes
• Couplings
• Bearings
• Belts
• Chains
• Shafts
• Conveyor structures
• Rollers

This can be especially valuable for machines that operate continuously or experience frequent starts and stops.

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39. Advantages for Process Control

The ability to change motor speed allows the process to respond to changing production requirements.

For example:

This flexibility is a major advantage of the PowerFlex 755 platform.

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40. Installation Checklist

Before installation, the following should be checked:

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41. Product Parameter Summary

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42. Five Recommended Same-Series Models

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43. Five Recommended Same-Brand Models

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44. Recommended Model by Motor Requirement

This is a preliminary selection guide. Motor full-load current remains the key electrical selection value.

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45. Overall Product Advantages

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46. Final Product Assessment

The 20G11NE052AA0NNNNN is a high-capacity member of the PowerFlex 755 industrial AC drive family, intended for applications requiring approximately 52 A of output current in a 600 VAC-class system.

Its approximately 50 HP normal-duty capacity makes it suitable for medium-to-large industrial motor applications.

It is particularly attractive when a 32 A or 41 A model is no longer sufficient but a substantially larger drive would provide unnecessary additional capacity.

The drive can be used for conveyors, pumps, fans, blowers, feeders, mixers, production machinery, material-handling systems, packaging equipment, and process machinery.

Its principal advantages are adjustable motor speed, controlled acceleration, controlled deceleration, industrial automation integration, diagnostic capability, and the additional current capacity available from the 52 A class.

From a mechanical-planning perspective, it should be considered a larger frame-class drive. A preliminary planning estimate of approximately 30–35 kg and approximately 700 × 350 × 350 mm should be allowed for cabinet and equipment-layout calculations.

These mechanical values are approximate planning figures rather than final fabrication dimensions.

For final engineering, the motor nameplate current, motor voltage, load characteristics, duty cycle, overload requirements, braking requirements, ambient temperature, cabinet cooling, installation clearances, and exact hardware configuration should all be checked.

Among the closely related capacity choices, 20G11NE041AA0NNNNN is the natural lower-capacity comparison, while 20G11NE062AA0NNNNN and 20G11NE077AA0NNNNN represent higher-capacity alternatives.

For an application requiring approximately 50 HP normal-duty operation and 52 A output capacity in the 600 VAC class, the 20G11NE052AA0NNNNN is the appropriate capacity class to evaluate.