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20G11GC085JA0NNNNN — Detailed Technical Product Profile

Product Introduction, Specifications, Applications, Advantages, Series Information and Model Recommendations

The 20G11GC085JA0NNNNN is a high-power industrial AC variable-frequency drive intended for three-phase motor control applications where reliable speed regulation, network connectivity, controlled acceleration and deceleration, and flexible automation integration are required.

The model belongs to the PowerFlex 755 series and is configured as an air-cooled, 400 VAC, three-phase drive with an 85 A normal-duty output rating. Its rated capacity is 45 kW under normal-duty conditions and 37 kW under heavy-duty conditions.

The configuration includes embedded EtherNet/IP communication, IP54 / NEMA Type 12 protection, forced-air cooling, an internal dynamic-braking transistor, EMC filtering, an installed CM jumper and no local HIM.

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1. Basic Product Information

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2. Product Series and Position

The 20G11GC085JA0NNNNN belongs to the PowerFlex 755 series within the PowerFlex 750-Series platform.

The PowerFlex 755 platform is intended for applications requiring more functionality and flexibility than a basic general-purpose inverter.

It is particularly appropriate for industrial machinery where the drive may need to communicate with a PLC, accept feedback devices, support additional I/O, provide advanced motor-control functions, or participate in a coordinated multi-drive system.

The 85 A / 45 kW normal-duty rating places this model above the 72 A / 37 kW configuration in the same capacity range.

For a machine requiring approximately 45 kW under normal-duty conditions, this model provides a suitable capacity level without immediately moving to a substantially larger drive frame.

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3. Detailed Electrical Parameters

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4. Normal-Duty and Heavy-Duty Ratings

The distinction between normal-duty and heavy-duty operation is important when selecting this drive.

Under normal-duty conditions, the drive is rated at 85 A / 45 kW.

Under heavy-duty conditions, the applicable rating is 72 A / 37 kW.

This distinction allows the same drive platform to be applied to different types of machinery.

For final engineering selection, motor nameplate current, acceleration requirements, overload requirements, ambient conditions and actual machine duty cycle should all be evaluated.

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5. Mechanical Dimensions and Weight

The physical size of the drive is important when designing an electrical cabinet or replacing an existing drive.

The approximate physical envelope is 647 mm × 348 mm × 220.1 mm.

The product weight is approximately 21 kg.

Cabinet designers should allow additional space beyond the basic dimensions for cable entry, airflow, terminal access, maintenance and optional components.

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6. Environmental Specifications

The IP54 / NEMA Type 12 enclosure makes the model appropriate for many industrial cabinet installations.

It should not, however, be treated as unrestricted outdoor equipment or as equipment intended for high-pressure washdown.

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7. Embedded EtherNet/IP Communication

One of the most useful features of the 20G11GC085JA0NNNNN is its integrated EtherNet/IP capability.

A typical automation architecture can be arranged as:

PLC / Controller → EtherNet/IP → Drive → Motor

The drive can exchange control commands, operating information, status information and diagnostic data with the automation controller.

This is particularly useful in production lines containing several motors.

Instead of controlling every drive independently through separate local interfaces, the drives can become part of one coordinated control system.

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8. Dynamic Braking Function

The model includes an internal dynamic-braking transistor.

Dynamic braking becomes particularly valuable when the driven machine has substantial inertia or needs relatively rapid controlled deceleration.

When a motor decelerates, mechanical energy can return to the drive’s DC bus.

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

Typical applications include:

• Large conveyors.
• High-inertia rollers.
• Material-handling machinery.
• Rapid-cycle production equipment.
• Rotating processing equipment.
• Centrifugal equipment.
• Machines requiring controlled stopping.

The internal transistor does not mean that every braking resistor is automatically suitable.

The resistor must be selected according to the required resistance, braking power, energy, duty cycle and thermal characteristics.

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9. EMC Filtering

The catalog configuration includes EMC filtering and an installed CM jumper.

This arrangement helps address electromagnetic compatibility requirements in industrial installations.

Good EMC performance is also dependent on installation practice.

Important considerations include:

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

The integrated filtering therefore forms part of the overall EMC design rather than replacing correct installation practices.

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10. No-HIM Configuration

The model is supplied in a Blank / No HIM configuration.

HIM refers to the local Human Interface Module.

The absence of a local HIM is useful when the machine already has a centralized operator interface.

A typical arrangement could be:

HMI → PLC → EtherNet/IP → Drive

This approach allows the operator to control the machine from a central HMI rather than interacting directly with the drive.

It can also produce a cleaner machine-panel layout when several drives are installed in the same cabinet.

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11. Main Product Advantages

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12. Product Application — Conveyor Systems

The 20G11GC085JA0NNNNN is well suited to large industrial conveyor systems.

Conveyor motors frequently require controlled acceleration because sudden starting can create mechanical stress.

Controlled acceleration can reduce shock on:

• Conveyor belts.
• Chains.
• Gearboxes.
• Couplings.
• Shafts.
• Bearings.
• Mechanical drive systems.

Controlled deceleration can also help prevent sudden load transfer.

When several conveyor sections operate together, EtherNet/IP communication can be used to coordinate speed references and operating status.

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13. Product Application — Pumps

The drive can be used for industrial pump systems requiring variable-speed control.

Typical examples include:

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

Variable-speed operation allows the motor to operate at different speeds according to process demand.

This can be useful when flow or pressure requirements vary during production.

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14. Product Application — Fans and Blowers

Large fans and blowers are another important application area.

Examples include:

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

Variable-speed control allows the fan or blower motor to operate according to actual airflow requirements.

This can provide better process control than continuously operating the motor at a fixed speed.

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15. Product Application — Mixers and Agitators

Industrial mixers can require considerable torque, particularly during startup.

The drive can be used for:

• Industrial mixers.
• Agitators.
• Material blending equipment.
• Process machinery.
• Production equipment.

The appropriate normal-duty or heavy-duty classification should be determined according to the actual starting torque and operating cycle.

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16. Product Application — Material Handling

Material-handling equipment can benefit from the drive’s combination of variable speed, communication and braking capability.

Typical applications include:

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

The drive can be integrated into a larger machine-control system where speed and operating status are managed centrally.

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17. Product Application — Industrial Processing Equipment

The PowerFlex 755 architecture is suitable for machinery where the drive is more than simply a speed controller.

Potential applications include:

• Process production lines.
• Large rotating equipment.
• Industrial rollers.
• Material-processing machines.
• Automated production machinery.
• High-inertia machinery.
• Multi-drive production systems.

The expandable architecture can be useful when feedback, additional I/O or safety functions are required.

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18. Product Application — Large Industrial Machinery

The 45 kW normal-duty rating places this model in a range suitable for relatively large machines.

It can be considered where the motor requires substantial current capacity but a much larger drive is unnecessary.

Examples include:

• Large pumps.
• Large fans.
• Blowers.
• Conveyors.
• Processing machinery.
• Material-handling systems.
• Industrial rotating machinery.

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19. Control and Motor-Performance Characteristics

The PowerFlex 755 platform is designed to support more advanced motor-control requirements than a basic scalar inverter.

Depending on the selected configuration and motor type, the platform can support different control approaches.

These may include:

• Sensorless vector control.
• Vector control with feedback.
• V/Hz control.
• Closed-loop speed control.
• Torque-oriented control.
• Permanent-magnet motor applications with suitable configuration.

This makes the series suitable for applications where speed accuracy and torque response are more important.

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20. Expansion Capability

One advantage of the PowerFlex 755 architecture is its modular approach.

Depending on the system requirements, additional functions can be incorporated through compatible options.

Possible expansion areas include:

This flexibility makes the drive suitable for machines that may evolve over time.

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21. Mechanical Installation

The approximate dimensions are:

647 mm × 348 mm × 220.1 mm

The approximate weight is:

21 kg

A cabinet should provide more space than the physical dimensions alone.

Additional room should be considered for:

• Power-cable bending radius.
• Motor-cable routing.
• Control wiring.
• Network cabling.
• Grounding.
• Cooling airflow.
• Fan access.
• Maintenance.
• Optional modules.
• Terminal access.

The drive should generally be installed in the intended vertical orientation.

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22. Cooling Requirements

The model uses forced-air cooling.

At the 45 kW power level, thermal management becomes an important part of system design.

The cabinet design should consider:

• Ambient temperature.
• Cabinet temperature.
• Drive heat generation.
• Other equipment installed nearby.
• Fan airflow.
• Air inlet and outlet paths.
• Installation altitude.
• Continuous load.
• Overload cycle.

If several drives are installed in one cabinet, their combined heat generation should be included in the cabinet thermal calculation.

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23. Motor Selection

The motor should not be selected solely by comparing kilowatt ratings.

The following parameters should be checked.

The motor nameplate current is one of the most important values to check before selecting the drive.

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24. Cabinet and Panel Design

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25. Recommended Same-Series / Related Models

The following models are useful for comparison because they occupy nearby positions in the PowerFlex 755 capacity range.

The 20G11GC085JA0NNNNN is particularly useful when the 72 A / 37 kW normal-duty model is no longer sufficient.

It provides a step up to 85 A / 45 kW normal-duty capacity while remaining in the same general Frame 5 configuration.

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26. Same-Series Capacity Comparison

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27. Five Same-Brand Popular Models

The following models can be considered broader alternatives within the same brand portfolio.

These models are not direct mechanical replacements for one another.

They represent different drive families, capacity ranges and application positions.

For an actual replacement, voltage, current, power, frame, enclosure, communication, braking and dimensions should all be compared.

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28. Same-Brand Comparison

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29. Application Selection Guide

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30. Main Benefits for Machine Builders

For machine builders, the 20G11GC085JA0NNNNN provides a combination of substantial motor capacity and industrial communication capability.

The integrated EtherNet/IP interface makes it suitable for centralized machine-control architectures.

The no-HIM configuration is useful when the machine already uses an external operator interface.

The IP54 / NEMA Type 12 enclosure provides a protected installation arrangement.

The internal dynamic-braking transistor adds flexibility for machines requiring controlled deceleration.

The modular architecture allows additional functions to be incorporated when required.

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31. Main Benefits for System Integrators

For system integrators, the drive can be incorporated into a multi-drive automation system.

A typical system may look like:

Controller

↓

Industrial Ethernet Network

↓

Drive 1 — Drive 2 — Drive 3 — Drive 4

↓

Multiple Motors

This architecture is useful for coordinated production lines.

The control system can manage:

• Start and stop.
• Speed references.
• Acceleration.
• Deceleration.
• Drive status.
• Fault conditions.
• Process sequencing.
• Production synchronization.
• Diagnostic information.

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32. Maintenance Considerations

Proper maintenance is important for maintaining reliable operation.

Recommended inspection areas include:

• Cooling fans.
• Airflow passages.
• Cabinet temperature.
• Power terminals.
• Motor connections.
• Grounding connections.
• Network connections.
• Dust accumulation.
• Fault history.
• Alarm history.
• Mechanical vibration.
• Environmental conditions.

The cooling system should receive particular attention because insufficient airflow can increase the temperature of the drive’s power components.

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33. Replacement Considerations

When replacing an existing drive, the complete catalog configuration should be compared.

A replacement should not be selected merely because its kW rating matches the motor.

The complete electrical, mechanical, communication and environmental configuration should be checked.

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34. Complete Technical Parameter Table

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35. Overall Product Evaluation

The 20G11GC085JA0NNNNN is a high-capacity industrial variable-frequency drive positioned in the 45 kW normal-duty class.

Its most important electrical characteristics are 85 A normal-duty output current, 45 kW normal-duty capacity, 72 A heavy-duty output current and 37 kW heavy-duty capacity.

The combination of 400 VAC three-phase input, Frame 5 construction, forced-air cooling, IP54 / NEMA Type 12 protection, embedded EtherNet/IP, EMC filtering and internal dynamic braking makes it well suited to demanding industrial automation applications.

The approximate physical dimensions of 647 × 348 × 220.1 mm and approximate weight of 21 kg should be taken into account when designing or modifying an electrical cabinet.

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

Compared with the 20G11GC072JA0NNNNN, the key advantage is the increase from 72 A / 37 kW normal duty to 85 A / 45 kW normal duty.

Compared with smaller configurations, the 20G11GC085JA0NNNNN provides additional current and power capacity without moving immediately into a much larger physical class.

For machines around the 45 kW normal-duty range, it provides a strong balance between motor capacity, industrial networking, braking capability, enclosure protection and expansion flexibility.

Before final engineering selection, the most important items to verify are motor rated current, motor voltage, duty classification, overload profile, acceleration and deceleration requirements, braking energy, ambient temperature, cabinet ventilation, installation space, communication requirements and safety requirements.