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Allen-Bradley 20G14NF082JA0NNNNN — PowerFlex 755 AC Drive Detailed Product Guide

The 20G14NF082JA0NNNNN is a high-power industrial AC variable frequency drive in the Allen-Bradley PowerFlex 755 series. It is designed for demanding three-phase motor-control applications and is particularly suitable for large pumps, fans, conveyors, compressors, mixers, process machinery, material-handling systems, and other industrial equipment requiring controlled motor speed and torque.

The model is rated for 690 VAC, with an 82 A Normal Duty output rating, approximately 75 kW Normal Duty, and 55 kW Heavy Duty. It uses an air-cooled Frame 6 construction and is configured for DC input with precharge.

The JA0 configuration is associated with an integrated communication-oriented configuration, including embedded EtherNet/IP, while the drive is specified with filtering, a common-mode jumper, a dynamic-braking transistor, and a blank/no-HIM arrangement.

For engineering, purchasing, and replacement purposes, the complete catalog number 20G14NF082JA0NNNNN should be retained because the individual characters identify important electrical and configuration details.

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1. Product Identification

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2. Product Overview

The 20G14NF082JA0NNNNN is designed for industrial motor applications where a conventional motor starter is not sufficient.

Instead of simply switching a motor on or off, the drive regulates motor operation by controlling the frequency and voltage supplied to the motor. This allows the motor to accelerate gradually, operate at different speeds, decelerate under controlled conditions, and respond to changing process requirements.

With an 82 A Normal Duty rating and 75 kW Normal Duty capacity, this model is suitable for relatively large industrial motors.

For applications with more demanding torque or overload requirements, the Heavy Duty rating is approximately 61 A and 55 kW. This distinction is important when selecting the drive for conveyors, mixers, compressors, and other constant-torque or high-load machines.

The 690 VAC voltage class makes the unit particularly suitable for industrial facilities using higher-voltage motor systems.

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3. Product Series

The product belongs to the:

PowerFlex 755 Series

The PowerFlex 755 series is an industrial AC drive platform designed for applications ranging from general motor control to more advanced automation systems.

Compared with smaller compact-drive families, the PowerFlex 755 architecture is intended for larger motors and applications where flexibility, communications, feedback, coordinated control, and system integration are important.

The 20G14NF082JA0NNNNN is one of the 690 VAC air-cooled PowerFlex 755 configurations.

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4. Detailed Model Information

The catalog number is:

20G14NF082JA0NNNNN

The model identifies a specific combination of voltage class, current rating, construction, filtering, communication configuration, and options.

The most important selection characteristics are the 690 VAC rating, 82 A Normal Duty current, 75 kW Normal Duty rating, 61 A Heavy Duty current, 55 kW Heavy Duty rating, Frame 6 construction, air cooling, DC input with precharge, filtering, CM jumper, DB transistor, and embedded EtherNet/IP.

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5. Main Technical Parameters

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6. Normal Duty Rating

The 75 kW Normal Duty rating is one of the key specifications of this model.

Normal Duty applications generally have a comparatively moderate overload requirement and are often associated with variable-torque loads.

Typical examples include:

• Centrifugal pumps
• Large fans
• Blowers
• Some conveyors
• Water circulation systems
• Ventilation systems
• Certain process machines

For these applications, the 82 A output capacity provides a substantial amount of motor-control capability.

The actual motor nameplate current should still be checked before selecting the drive. A motor with a nominal 75 kW rating does not necessarily have the same full-load current under every motor design and operating condition.

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7. Heavy Duty Rating

The Heavy Duty rating of the model is approximately:

61 A / 55 kW

This is important because many industrial machines do not behave like centrifugal pumps or fans.

Machines such as mixers, heavy conveyors, crushers, certain compressors, and other constant-torque equipment can demand significantly more torque during acceleration or under changing loads.

For these applications, the 55 kW Heavy Duty rating should be used as the primary reference rather than the 75 kW Normal Duty rating.

A simple way to understand the difference is:

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8. Voltage Rating

The drive is designed for a 690 VAC three-phase industrial system.

This is an important characteristic because it places the model in a higher-voltage motor-control category.

For large motors, higher operating voltage can help keep current at a manageable level for a given power output.

For example, large industrial facilities may use 690 VAC motor systems for:

• Pumps
• Fans
• Compressors
• Conveyors
• Large process machinery
• Mining equipment
• Marine-related industrial equipment
• Large material-handling systems

The motor voltage and the complete electrical system should always be checked before installation.

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9. Input Type

The model uses:

DC Input with Precharge

This is different from simply selecting a conventional AC-input drive.

The drive’s DC bus contains capacitive energy storage. When power is applied, the capacitors need to be charged in a controlled manner.

The precharge arrangement limits the initial charging current and allows the DC bus to reach an appropriate operating condition.

This configuration is especially relevant in systems involving:

• Common DC buses
• Multiple drives
• Regenerative systems
• Shared DC power systems
• Specialized industrial power architectures

When replacing an existing drive, the existing DC-bus architecture should therefore be examined carefully.

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10. Cooling System

The 20G14NF082JA0NNNNN uses forced-air cooling.

At 75 kW, thermal management becomes an important part of system design.

The drive should not be treated as an isolated electrical component. The cabinet, ventilation system, ambient temperature, airflow, and surrounding equipment all influence operating temperature.

Regular inspection of the cooling path is particularly important in dusty industrial environments.

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11. Dimensions and Weight

The physical size and weight should be considered carefully when designing an electrical cabinet.

The 38.6 kg figure should be treated as an approximate drive-unit weight.

The final cabinet assembly will normally weigh more because of:

• Mounting hardware
• Power cables
• Motor cables
• Control wiring
• Communication modules or accessories
• Circuit protection
• Contactors
• Terminal assemblies
• Cabinet structure
• Cooling equipment

The actual cabinet dimensions should therefore be larger than the physical dimensions of the drive itself.

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12. Enclosure Configuration

The drive is an open-type configuration.

This means the drive is normally installed inside a suitable electrical enclosure rather than being exposed directly to the surrounding industrial environment.

The cabinet should provide appropriate protection against:

• Dust
• Moisture
• Accidental contact
• Conductive contamination
• Excessive heat
• Mechanical damage

The cabinet must also maintain the airflow required by the drive’s cooling system.

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13. Embedded EtherNet/IP

One of the notable characteristics of the JA0 configuration is its embedded EtherNet/IP communication capability.

This can simplify integration into a modern industrial control system.

The drive can be incorporated into an automation architecture involving:

• PLC control
• HMI operation
• Supervisory systems
• Production monitoring
• Drive diagnostics
• Remote parameter management
• Process control
• Status monitoring

This can reduce the need for separate communication hardware in applications where the embedded interface provides the required functionality.

For a factory using Ethernet-based automation, this is a significant practical advantage.

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14. Filtering and CM Jumper

The model is configured as:

Filtered, CM Jumper Installed

The filtering arrangement is useful for managing electromagnetic noise associated with high-frequency switching.

A variable-frequency drive generates high-frequency electrical switching signals as part of normal operation. Proper filtering, grounding, shielding, and cable routing can help reduce unwanted electrical interference.

The common-mode configuration is also relevant to the overall grounding and EMC design.

For this reason, installation should consider:

• Motor cable length
• Cable shielding
• Grounding
• Cabinet bonding
• Control-cable routing
• Communication cable routing
• Filter configuration

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15. Dynamic Braking

The model includes a:

DB Transistor

Dynamic braking can be useful in applications where the motor needs to decelerate more quickly or where the mechanical system contains significant stored rotational energy.

Potential applications include:

• Conveyors
• Centrifuges
• High-inertia fans
• Material handling
• Machine tools
• Certain process machines

The braking transistor itself should not be confused with a complete braking resistor system. The overall braking arrangement needs to be designed according to the machine’s regenerative energy and stopping requirements.

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16. HIM Configuration

The model is configured as:

Blank / No HIM

HIM means Human Interface Module.

A drive without a local HIM can be appropriate where the unit is installed inside a control cabinet and operators interact with the machine through:

• HMI
• PLC
• SCADA
• Industrial Ethernet
• External control panel

This arrangement can provide a cleaner cabinet design and is especially practical when the drive is part of a centralized automation system.

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17. Product Applications

17.1 Large Pumps

The 20G14NF082JA0NNNNN is well suited to large pump applications where variable flow is required.

Instead of operating the motor continuously at full speed, the drive can adjust motor speed according to process requirements.

Typical applications include:

• Water treatment
• Cooling-water circulation
• Industrial process pumps
• Utility systems
• Chemical process systems
• Large circulation pumps

For centrifugal pumps, variable-speed operation can also provide substantial energy-saving potential when the process does not require full flow continuously.

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18. Large Fans and Blowers

Large fans and blowers are another strong application.

The motor can operate at a speed appropriate to the actual ventilation requirement.

Typical applications include:

• Factory ventilation
• Dust extraction
• Furnace exhaust
• Process-air systems
• Industrial cooling
• Large air-handling systems

The drive can reduce the need for mechanical throttling and provide smoother speed adjustment.

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19. Conveyor Systems

Conveyors are particularly suitable where controlled acceleration and adjustable speed are required.

The drive can gradually accelerate the motor rather than applying full-speed operation immediately.

This can help reduce mechanical shock on:

• Conveyor belts
• Gearboxes
• Couplings
• Shafts
• Bearings
• Mechanical structures

For heavy conveyors, however, the Heavy Duty rating should be evaluated carefully.

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20. Compressors

The drive can also be used in certain industrial compressor applications.

The exact suitability depends on compressor type and load profile.

Before selecting the drive, engineers should consider:

• Compressor starting torque
• Motor current
• Minimum speed
• Maximum speed
• Acceleration requirements
• Overload requirements
• Process pressure
• Mechanical inertia

Where the compressor requires high starting torque, the Heavy Duty rating becomes particularly important.

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21. Mixers and Agitators

Industrial mixers frequently require high torque during startup.

The drive can provide controlled acceleration and adjustable operating speed.

Typical applications include:

• Chemical mixing
• Food processing
• Slurry processing
• Material mixing
• Industrial production
• Batch-processing equipment

For high-torque mixers, the motor’s actual current and the drive’s Heavy Duty capability should be checked carefully.

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22. Process Machinery

The PowerFlex 755 platform is suitable for machines where motor speed forms part of the production process.

Potential applications include:

• Extrusion
• Material processing
• Production lines
• Large machine tools
• Manufacturing equipment
• Continuous-process machinery

The embedded communication capability is particularly useful when motor operation needs to be coordinated with other parts of the production system.

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23. Material Handling

Large material-handling systems can benefit from controlled acceleration, deceleration, and variable speed.

Potential applications include:

• Bulk-material handling
• Industrial conveying
• Warehouse systems
• Mining-related material handling
• Production transfer systems

The drive’s high current capability makes it appropriate for substantial motor loads.

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24. Main Product Advantages

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25. Advantage of the 75 kW Normal Duty Rating

The 75 kW Normal Duty rating provides a useful capacity range for large industrial machines.

Compared with smaller drive models, this model can control significantly larger motors without moving immediately into an extremely large physical frame.

It is particularly useful when the load is primarily variable torque.

Typical examples are large centrifugal pumps and fans.

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26. Advantage of the 55 kW Heavy Duty Rating

The 55 kW Heavy Duty rating is useful for machines that experience higher torque demand.

For example, a conveyor may require considerable torque when loaded.

A mixer may require high torque when starting with material already inside the vessel.

A compressor can also have demanding acceleration requirements.

In such cases, the Heavy Duty rating should be considered instead of using the 75 kW Normal Duty number as the only selection criterion.

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27. Advantage of Embedded Communication

The integrated communication capability is particularly useful in automated production systems.

A typical architecture could include:

PLC → Industrial Ethernet → PowerFlex 755 → Motor

This allows the drive to become part of the machine-control system rather than operating as an isolated motor controller.

Possible information exchanged with the control system can include:

• Speed command
• Start/stop command
• Actual speed
• Output current
• Drive status
• Fault information
• Alarm information
• Operating parameters

The exact data available depends on the control configuration and programming.

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28. Five Recommended Models From the Same Series

The following models are good comparison choices within the PowerFlex 755, 690 VAC air-cooled range.

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29. 20G14NF061JA0NNNNN

The 20G14NF061JA0NNNNN is the lower-current model immediately below the target 82 A configuration.

It is particularly useful when the motor requires around the 55 kW Normal Duty range.

This is one of the most logical alternatives when the 82 A capacity is more than the application requires.

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30. 20G14NF098JA0NNNNN

The 20G14NF098JA0NNNNN provides more current capacity than the target model.

The 98 A model is particularly relevant when the motor is larger than the 75 kW Normal Duty range.

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31. 20G14NF119JA0NNNNN

The 20G14NF119JA0NNNNN moves further into the high-power range.

This model is useful for larger pumps, fans, conveyors and process machines.

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32. 20G14NF142JA0NNNNN

The 20G14NF142JA0NNNNN is a higher-current option for large motor systems.

This model is appropriate when the motor current is considerably higher than the 82 A target model.

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33. 20G14NF050JA0NNNNN

The 20G14NF050JA0NNNNN is a lower-capacity model in the same general 690 VAC family.

This model makes sense where the 82 A capacity of the target model would be unnecessarily large.

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34. Same-Series Comparison Table

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35. Five Popular Models From the Same Brand

The following models are useful when comparing the target drive with other popular products under the same Allen-Bradley brand.

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36. 25B-D017N114

The 25B-D017N114 is from the PowerFlex 525 family and is designed for substantially smaller motor applications than the 20G14NF082JA0NNNNN.

It is not a direct replacement for the 20G14NF082JA0NNNNN. It is more suitable for smaller machines.

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37. 25B-D024N114

The 25B-D024N114 is another PowerFlex 525 configuration.

Its main advantage is its compact form factor for lower-power machinery.

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38. 25B-D030N114

The 25B-D030N114 belongs to the same compact PowerFlex 525 family.

This model is more appropriate for medium-size machinery than for a 75 kW, 690 VAC motor.

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39. 20G11NC072JA0NNNNN

The 20G11NC072JA0NNNNN remains within the PowerFlex 755 family but belongs to a different voltage configuration.

This is a useful comparison when a facility operates 480 VAC rather than 690 VAC motors.

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40. 20G11NC5P0JA0NNNNN

The 20G11NC5P0JA0NNNNN is another PowerFlex 755 configuration intended for large industrial motor control.

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41. Same-Brand Model Comparison

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42. 20G14NF082JA0NNNNN vs. 20G14NF061JA0NNNNN

These two models are particularly close and are worth comparing directly.

The 20G14NF082JA0NNNNN is the better choice when the motor requires more current or when a 75 kW Normal Duty rating is needed.

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43. 20G14NF082JA0NNNNN vs. 20G14NF098JA0NNNNN

The 98 A model becomes attractive when the motor current approaches the upper limit of the 82 A configuration.

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44. Application Selection Table

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45. Installation Recommendations

The physical dimensions of the drive are approximately:

665.5 mm × 308 mm × 346.4 mm

The approximate weight is:

38.6 kg

These values are important when planning the cabinet.

However, the cabinet should not be designed to exactly match the drive dimensions.

Additional space is required for:

• Incoming power connections
• Motor output cables
• Grounding conductors
• Communication cables
• Control wiring
• Ventilation
• Maintenance
• Terminal access
• Cooling airflow

The drive should normally be mounted vertically and positioned so that cooling air can flow through the unit without obstruction.

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46. Cabinet Thermal Design

For a 75 kW drive, cabinet thermal management should be considered during the initial engineering stage.

The following factors should be evaluated:

If several drives are installed in the same cabinet, their combined heat generation should be considered.

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47. Maintenance Considerations

Regular maintenance can significantly improve the reliability of a high-power AC drive.

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

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48. Selection Checklist

Before purchasing the 20G14NF082JA0NNNNN, the following information should be checked.

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49. Key Advantages Summary

The 20G14NF082JA0NNNNN stands out because it combines several important characteristics in one industrial drive configuration.

Its 82 A Normal Duty output provides capacity for motors around the 75 kW range, while the 61 A Heavy Duty rating allows the same platform to be considered for demanding 55 kW applications.

The 690 VAC voltage class makes it suitable for higher-voltage industrial motor systems.

The Frame 6 air-cooled construction provides a practical solution for cabinet installations, while the DC input with precharge supports specialized industrial power architectures.

The embedded EtherNet/IP capability is also valuable for modern automation systems where the drive needs to exchange commands, status information, diagnostic information, and operating data with the main control system.

The combination of filtering, common-mode configuration, dynamic-braking transistor, and flexible PowerFlex 755 architecture makes the model suitable for a wide range of industrial motor-control applications.

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50. Final Technical Summary

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51. Overall Evaluation

The 20G14NF082JA0NNNNN is a high-capacity PowerFlex 755 AC drive intended for large industrial motor applications.

Its 75 kW Normal Duty rating makes it particularly attractive for variable-torque applications such as large pumps, fans and blowers.

Its 55 kW Heavy Duty rating makes it suitable for consideration in more demanding constant-torque applications, provided the motor current and overload requirements remain within the drive’s limits.

The 82 A output rating is the most important electrical specification for selecting the model. Motor nameplate current should always be checked against the drive rating rather than relying only on the motor’s kW value.

The 690 VAC three-phase configuration makes this model suitable for industrial facilities using higher-voltage motor systems, while the Frame 6 air-cooled design provides a practical cabinet-mounted solution.

The embedded EtherNet/IP capability is another major advantage for automated factories because the drive can be incorporated into an Ethernet-based control architecture.

For applications below the 75 kW range, the 20G14NF061JA0NNNNN is a natural lower-capacity comparison. For larger applications, the 20G14NF098JA0NNNNN, 20G14NF119JA0NNNNN, and 20G14NF142JA0NNNNN provide progressively greater current and power capacity.

Overall, the 20G14NF082JA0NNNNN is best viewed as a high-power, 690 VAC industrial drive for applications where motor capacity, variable-speed control, automation integration, cabinet installation, and flexible industrial operation are all important.