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20G11GC072JA0NNNNN — Detailed Product Overview, Technical Specifications, Applications, Advantages and Related Model Selection

The 20G11GC072JA0NNNNN is a high-capacity industrial variable-frequency AC drive designed for three-phase motor control in demanding automation and industrial machinery applications.

It is part of the PowerFlex 755 drive family and is positioned within the PowerFlex 750-Series platform. The model is configured for a 400 VAC, three-phase input, with a 72 A normal-duty rating and 60 A heavy-duty rating.

The normal-duty power rating is 37 kW, while the heavy-duty rating is 30 kW. The drive uses Frame 5 construction, forced-air cooling, an IP54 / NEMA Type 12 enclosure, integrated Ethernet/IP communication, EMC filtering and an internal dynamic-braking transistor.

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1. Basic Product Information

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2. Product Introduction

The 20G11GC072JA0NNNNN is intended for industrial applications where conventional fixed-speed motor operation needs to be replaced by adjustable-speed control.

Rather than operating a motor continuously at one fixed speed, an AC drive allows the motor speed to be adjusted according to the actual process requirement.

This provides greater control over machine operation and can also help reduce mechanical shock during starting and stopping.

With a 72 A normal-duty output rating, this model is suitable for relatively large industrial motors and machinery.

Its 37 kW normal-duty rating makes it especially suitable for applications such as large conveyors, industrial pumps, fans, blowers, mixers and other rotating machinery.

For applications with a more demanding overload profile, the applicable heavy-duty rating is 60 A / 30 kW.

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3. Product Series

The product belongs to the PowerFlex 755 series.

The PowerFlex 755 is designed as a higher-performance industrial drive platform within the PowerFlex 750-Series.

Compared with compact drive families intended primarily for smaller machines, the PowerFlex 755 platform is better suited to larger industrial systems where motor control, networking, feedback, expansion, diagnostics and machine integration are important.

The architecture is also designed to support additional control and feedback functions through optional modules.

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4. Detailed Electrical Parameters

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5. Normal-Duty and Heavy-Duty Ratings

One of the most important characteristics of this drive is the difference between its normal-duty and heavy-duty ratings.

The 37 kW normal-duty rating is appropriate when the machine generally operates at a conventional load level.

The 30 kW heavy-duty rating should be considered when the machine requires higher overload capability, higher starting torque or more demanding acceleration cycles.

For actual installation, the motor nameplate current and machine load profile should be used for final sizing rather than relying only on motor horsepower or kilowatt values.

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6. Mechanical Dimensions and Weight

The physical dimensions are particularly important when installing the drive inside an electrical cabinet.

The approximate product envelope is 647 mm high × 348 mm wide × 220.1 mm deep.

The product weight is approximately 21 kg.

When designing a cabinet, additional clearance should be provided around the drive for cooling airflow, power-cable routing, control wiring, network connections and maintenance access.

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7. Environmental Parameters

The IP54 / NEMA Type 12 construction provides substantially more environmental protection than an open-frame drive.

However, IP54 should not be treated as equivalent to unrestricted outdoor installation or high-pressure washdown protection.

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8. Communication Function

The 20G11GC072JA0NNNNN incorporates EtherNet/IP communication.

This is particularly useful for automated production equipment because the drive can be integrated into a larger control architecture.

A typical arrangement can be represented as:

PLC / Controller → EtherNet/IP Network → AC Drive → Motor

Through the network, the control system can exchange information such as:

This makes the drive suitable for systems containing multiple motors that need to be coordinated from a central automation controller.

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9. Dynamic Braking

The model includes an internal dynamic-braking transistor.

Dynamic braking is particularly useful when a machine contains significant rotational inertia or needs controlled deceleration.

During motor deceleration, mechanical energy can return toward the drive’s DC bus.

The braking system can use an appropriately selected external braking resistor to dissipate this energy.

Typical applications include:

• High-inertia conveyors.
• Rapid-cycle machinery.
• Material-handling systems.
• Large rotating equipment.
• Centrifugal machinery.
• Rollers.
• Certain processing machines.

The braking transistor is only one part of the braking system.

The braking resistor must be correctly selected according to resistance, braking power, duty cycle, energy and thermal requirements.

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10. EMC Filtering

The model is configured with an EMC filter and an installed CM jumper.

This arrangement is useful in industrial installations where electromagnetic compatibility is important.

Good EMC performance also depends on the overall installation.

Important factors include:

• Proper grounding.
• Correct cable shielding.
• Motor cable routing.
• Separation of power and control cables.
• Correct cabinet bonding.
• Appropriate communication cable routing.
• Proper termination.
• Motor grounding.

The drive’s internal filtering therefore works together with correct cabinet and wiring practices.

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11. No HIM Configuration

The model is configured with Blank / No HIM.

HIM means Human Interface Module.

A drive without a local HIM can be advantageous when the machine already has a separate HMI or when operation is controlled through the automation network.

Typical configurations include:

PLC → EtherNet/IP → Drive

or:

HMI → PLC → Drive

This arrangement keeps the operator interface separate from the drive itself.

For maintenance personnel who require local parameter access, an appropriate compatible interface can be added where required.

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12. Main Product Advantages

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13. Application: Conveyor Systems

The drive is well suited to industrial conveyor systems.

Conveyors frequently require controlled acceleration and deceleration.

Starting a large conveyor directly at full motor speed can generate mechanical stress on:

• Belts.
• Chains.
• Gearboxes.
• Couplings.
• Bearings.
• Shafts.

Variable-speed control allows the acceleration process to be managed more smoothly.

EtherNet/IP communication can also be used when several conveyor sections need to operate together.

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14. Application: Pump Systems

The drive can be used in industrial pumping applications.

Typical examples include:

• Process pumps.
• Cooling-water pumps.
• Circulation pumps.
• Fluid-transfer systems.
• Industrial water systems.
• Pressure-control systems.

Variable-speed operation allows the motor speed to be adjusted according to process demand.

For pump applications, this can be particularly useful when the required flow rate changes throughout the production process.

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15. Application: Fan and Blower Systems

Large fans and blowers are another suitable application.

Examples include:

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

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

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16. Application: Mixers and Agitators

The drive can also be applied to industrial mixing equipment.

Potential applications include:

• Industrial mixers.
• Agitators.
• Processing machinery.
• Material blending systems.
• Production equipment.

Mixer applications can have significant starting torque requirements.

Therefore, the normal-duty and heavy-duty ratings should be compared with the actual motor current and starting conditions.

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17. Application: Material Handling

The drive is appropriate for various industrial material-handling applications.

Examples include:

• Transfer conveyors.
• Production-line conveyors.
• Material transport systems.
• Automated handling equipment.
• Processing-line equipment.
• Large rotating material-handling machinery.

The combination of speed control, network communication and braking capability is useful for coordinated material movement.

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18. Application: Industrial Processing Machinery

The PowerFlex 755 platform can also be applied to more sophisticated industrial machinery.

Possible examples include:

• Process lines.
• Machinery with multiple drive axes.
• Large production equipment.
• Industrial rollers.
• Rotating process equipment.
• High-inertia machinery.
• Automated material-processing systems.

The ability to add feedback and I/O functions makes the platform suitable for applications requiring more than basic speed control.

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19. Recommended Same-Series or Related Models

The following five models are useful comparison choices within the same PowerFlex 755 family or closely related capacity range.

For the models other than 20G11GC072JA0NNNNN, the exact physical dimensions and shipping/product weight depend on the specific frame and catalog configuration.

The 20G11GC072JA0NNNNN is the main reference model in this comparison and has a known approximate physical size of 647 × 348 × 220.1 mm and approximately 21 kg product weight.

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20. Same-Series Capacity Comparison

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21. How to Choose Between the Same-Series Models

20G11GC043JA0NNNNN

This is the smaller capacity choice in the comparison.

It is suitable when the motor requirement is around the 22 kW normal-duty range and the 43 A output rating is sufficient.

It can be a practical choice for smaller industrial conveyors, pumps, fans and similar equipment.

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20G11GC060JA0NNNNN

This model moves into the 30 kW normal-duty class.

It is appropriate when the 22 kW-class model does not provide enough output capacity but a 37 kW-class drive would be unnecessarily large.

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20G11GC072JA0NNNNN

This is the reference model.

With 72 A and 37 kW normal-duty capacity, it provides a significant increase over the 60 A model.

It is especially suitable when the application requires approximately 37 kW normal-duty operation.

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20G11GC085JA0NNNNN

This is the next larger capacity option.

With approximately 85 A / 45 kW normal-duty capacity, it provides additional margin for applications above the 37 kW range.

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20G1AGC104JA0NNNNN

This model provides another step upward in capacity.

Its approximately 104 A / 55 kW normal-duty rating makes it more appropriate for larger motors and heavier industrial machinery.

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22. Five Popular Models from the Same Brand

The following models are useful as broader product-family alternatives.

Because these models belong to different product families and configurations, their physical dimensions and weights should not be assumed to be interchangeable.

The exact enclosure, frame, voltage and option configuration should be checked before using any alternative model as a mechanical replacement.

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23. Broader Product-Family Comparison

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24. Main Technical Advantages

High Output Capacity

The 72 A normal-duty rating gives this model a substantial output capacity for industrial machinery.

This makes it more appropriate for larger motors than smaller compact drives.

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37 kW Normal-Duty Capability

The 37 kW normal-duty rating is one of the key reasons to select this model.

It fits a broad range of medium-to-large industrial machinery.

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30 kW Heavy-Duty Capability

For applications requiring heavy-duty operation, the drive provides a 60 A / 30 kW rating.

This makes the drive useful for machinery with more demanding load characteristics.

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Embedded EtherNet/IP

Integrated network communication reduces the need for additional communication hardware in many automation architectures.

It is especially useful when the drive is controlled by a networked PLC.

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Dynamic Braking

The internal braking transistor provides additional flexibility for high-inertia machinery and applications requiring controlled deceleration.

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IP54 / NEMA Type 12 Enclosure

The enclosed construction provides additional protection compared with an open-frame configuration.

This makes the drive suitable for protected industrial installations where dust and moisture protection are required within the specified environmental limits.

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Expandable Architecture

The PowerFlex 755 platform supports optional modules for functions such as:

• Encoder feedback.
• Dual encoder feedback.
• Universal feedback.
• Additional I/O.
• Communication.
• Safety functions.

This makes the platform adaptable to different machine requirements.

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25. Typical Machine Architecture

A typical installation can be organized as follows:

Industrial Controller

↓

EtherNet/IP Network

↓

20G11GC072JA0NNNNN

↓

Three-Phase AC Motor

↓

Mechanical Load

The controller can provide speed references and operating commands while receiving status and diagnostic information from the drive.

For machines with several motors, multiple drives can be integrated into the same automation system.

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26. Motor Selection Considerations

The drive should be matched to the motor using more than just the motor’s kW rating.

The motor nameplate current should always be compared with the applicable drive current rating.

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27. Cabinet Design Considerations

The approximate physical size of the drive is:

647 mm × 348 mm × 220.1 mm

The approximate product weight is:

21 kg

The cabinet should not be designed using these dimensions as the only clearance requirement.

Additional space may be required for:

• Power terminals.
• Motor cables.
• Control cables.
• Network cables.
• Grounding connections.
• Cooling airflow.
• Maintenance access.
• Fan replacement.
• Optional modules.
• Braking connections.

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28. Cooling Considerations

The drive uses forced-air cooling.

Because the unit operates in the 37 kW class, heat management is important.

The cabinet design should account for:

• Ambient temperature.
• Internal cabinet temperature.
• Other heat-generating components.
• Cooling fan operation.
• Airflow direction.
• Ventilation.
• Installation altitude.
• Continuous load.
• Drive spacing.

When several drives are installed together, the heat generated by all drives should be included in the cabinet thermal calculation.

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29. Typical Industrial Applications

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30. Maintenance Considerations

For long-term operation, maintenance should focus on both the electrical and cooling systems.

Recommended inspection areas include:

• Cooling fan condition.
• Air passages.
• Cabinet temperature.
• Power connections.
• Motor terminals.
• Ground connections.
• Network connections.
• Dust accumulation.
• Alarm history.
• Fault history.
• Mechanical vibration.
• Environmental conditions.

The cooling system is particularly important.

A drive that operates continuously in a hot cabinet with restricted airflow may require derating even when the electrical load appears to be within the nominal rating.

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31. Selection Summary

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32. Complete Parameter Summary

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33. Final Product Assessment

The 20G11GC072JA0NNNNN is a substantial industrial AC drive intended for applications where a compact general-purpose inverter is no longer sufficient.

Its 72 A normal-duty output and 37 kW normal-duty capacity provide a useful combination for medium-to-large industrial motors.

The 60 A / 30 kW heavy-duty rating gives the same drive a different application range when the machine requires greater overload capability.

Its 400 VAC three-phase input, Frame 5 construction, forced-air cooling, IP54 / NEMA Type 12 enclosure, embedded EtherNet/IP, EMC filtering and internal dynamic-braking transistor make it particularly suitable for integrated industrial automation systems.

The physical dimensions of approximately 647 × 348 × 220.1 mm and a product weight of approximately 21 kg should be considered carefully when designing the electrical cabinet.

The strongest application areas are large conveyors, pumps, fans, blowers, material-handling systems, mixers, process equipment and other industrial rotating machinery.

For a smaller application, the 43 A or 60 A PowerFlex 755 configurations may be more economical.

For a larger motor, the 85 A or 104 A configurations provide additional capacity.

Overall, the 20G11GC072JA0NNNNN is best viewed as a 37 kW-class industrial variable-speed drive with integrated network capability and a strong emphasis on flexible machine integration, motor control and industrial-duty operation.