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20G11RC8P7JA0NNNNN — PowerFlex 755 AC Drive

1. Product Overview

The 20G11RC8P7JA0NNNNN is a PowerFlex 755-series industrial AC variable frequency drive designed for three-phase motor speed and torque control in industrial automation equipment.

It is a 400 VAC, three-phase, 8.7 A, Frame 1 drive with a normal-duty rating of approximately 4 kW and a heavy-duty rating of approximately 2.2 kW.

The unit is configured with embedded EtherNet/IP communication, forced-air cooling, IP20 open-type construction, an AC input with precharge and DC terminals, integrated dynamic-braking transistor capability, EMC filtering and no installed HIM keypad.

This configuration is particularly appropriate for machines that require adjustable motor speed, controlled acceleration and deceleration, network-based control, motor protection, diagnostics and integration with a larger industrial automation system.

The model is part of the PowerFlex 755 product family and belongs to the broader PowerFlex 750-Series drive platform.

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2. Basic Product Information

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3. Product Description

The 20G11RC8P7JA0NNNNN is designed to provide controlled electrical power to a three-phase AC motor.

Instead of operating the motor continuously at one fixed speed, the drive changes the output frequency and voltage according to the required operating condition.

This allows the motor to accelerate smoothly, operate at an adjustable speed and decelerate in a controlled manner.

The drive is especially useful where motor speed needs to be coordinated with a machine process.

Typical examples include conveyors, pumps, fans, feeders, material-handling equipment, packaging machinery and other industrial rotating equipment.

The 8.7 A output-current rating provides a useful capacity for motors in the approximately 4 kW normal-duty range.

The drive can also be configured for more demanding heavy-duty applications, where the applicable rating is approximately 2.2 kW.

The difference between normal-duty and heavy-duty operation is important because industrial loads do not all place the same demand on a motor.

A fan may have relatively predictable torque requirements, while a loaded conveyor or machine feeder can require significantly more torque during acceleration.

For this reason, the motor’s actual nameplate current and the machine’s operating cycle should always be considered when selecting the drive.

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4. Brand and Product Series

The PowerFlex 755 series is positioned as an advanced industrial drive platform.

Compared with smaller general-purpose drives, it provides a broader range of control, communication, feedback, diagnostic and application functions.

This makes it appropriate for machines where the drive is not simply being used as a basic speed controller but is an active part of the automation system.

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5. Detailed Technical Specifications

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6. Electrical Performance

The most important electrical rating of this model is its 8.7 A nominal output current.

The drive is designed for a 400 VAC three-phase electrical system and provides a variable-frequency three-phase output for the connected motor.

For normal-duty operation, the drive is rated for approximately 4 kW.

For heavy-duty operation, the applicable rating is approximately 2.2 kW.

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7. Normal-Duty Rating

The approximately 4 kW normal-duty rating makes the drive suitable for many general industrial applications.

Normal-duty loads typically have relatively moderate overload requirements.

Examples include:

• Fans
• Pumps
• Conveyors
• Rollers
• General material handling
• Feed systems
• Packaging machinery
• Industrial ventilation
• Process machinery

For these applications, the drive can regulate motor speed according to the required process conditions.

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8. Heavy-Duty Rating

The heavy-duty rating is approximately 2.2 kW.

Heavy-duty operation becomes important when the machine has high starting torque, frequent acceleration, frequent stopping or significant changes in mechanical load.

Examples include:

• Loaded conveyors
• Feeders
• High-inertia machinery
• Repetitive start/stop applications
• Material-handling equipment
• Machines with demanding acceleration requirements

The final selection should always be based on motor current and actual duty cycle rather than relying only on the motor’s kW rating.

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9. Dimensions and Weight

The drive is a Frame 1 unit.

A practical dimensional reference is approximately:

400.5 mm high × 110 mm wide × 211 mm deep

The approximate physical weight is 6 kg.

The cabinet should not be designed to exactly match the drive’s external dimensions.

Additional space is required for electrical wiring, airflow, service access, cable bending radius and surrounding components.

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10. IP20 Construction

The drive uses an IP20 open-type construction.

This means that it is generally intended to be installed inside an appropriate electrical enclosure.

The enclosure should protect the drive from direct exposure to water, excessive dust, conductive particles and other environmental contaminants.

A properly designed control cabinet should also provide sufficient airflow.

When multiple heat-producing components are installed in the same cabinet, the total thermal load should be considered.

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11. Cooling System

The drive uses forced-air cooling.

The internal power electronics generate heat during operation.

The cooling system moves air through the drive to remove this heat.

Proper ventilation is therefore important.

The following conditions should be avoided:

• Blocked ventilation openings
• Excessive cabinet temperature
• Dust accumulation
• Poor airflow
• Installation close to major heat sources
• Incorrect cabinet ventilation

Regular inspection of the cooling system is recommended in demanding industrial environments.

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12. Embedded EtherNet/IP Communication

A major feature of this configuration is its embedded EtherNet/IP communication capability.

The drive can communicate with an industrial automation controller through the network.

This allows the controller to send operating commands and receive information from the drive.

Typical data includes:

This is particularly useful for automated production machinery.

The drive can become an integrated part of the machine-control architecture rather than operating as an isolated motor controller.

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13. Motor Control Functions

The PowerFlex 755 platform is designed for a wide range of motor-control applications.

The drive can support different control approaches depending on the motor and machine requirements.

V/Hz Control

V/Hz control is appropriate for relatively simple applications.

Typical examples include:

• Fans
• Pumps
• Basic conveyors
• Simple rotating machinery

Sensorless Vector Control

Sensorless vector control can provide improved torque and speed characteristics compared with basic V/Hz control.

It is useful for applications requiring better low-speed performance.

Advanced Vector Control

Advanced vector control can be used for applications requiring improved torque regulation and speed control.

This is particularly useful in demanding machinery.

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14. PID Process Control

The drive also provides PID functionality.

This allows it to participate directly in certain process-control applications.

For example, a pump may need to maintain a specific pressure.

A pressure sensor measures the actual pressure.

The drive compares the measured value with the desired setpoint.

The motor speed can then be adjusted accordingly.

Potential applications include:

• Pressure control
• Flow control
• Cooling-water systems
• Pump systems
• Airflow systems
• Process circulation

This can reduce the need for separate speed-control hardware in some applications.

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15. Dynamic Braking

The model includes a dynamic braking transistor.

Dynamic braking can be useful when the motor needs to decelerate rapidly.

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

A suitable external braking resistor can be used to dissipate this energy as heat.

This is useful in applications with significant inertia.

Typical examples include:

• Conveyors
• Rollers
• Material-handling machinery
• High-inertia rotating equipment
• Repetitive stopping applications
• Feed mechanisms

The braking resistor must be correctly sized for the application’s braking energy and duty cycle.

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16. Product Applications

Conveyor Systems

Conveyors are one of the most common applications for variable frequency drives.

The drive can provide controlled acceleration and deceleration.

This can reduce mechanical shock on belts, rollers, gearboxes and couplings.

The conveyor speed can also be changed according to production requirements.

Typical benefits include:

• Adjustable speed
• Smooth starting
• Smooth stopping
• Reduced mechanical stress
• Network monitoring
• Fault diagnostics

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Pump Systems

The drive can regulate pump speed according to process demand.

A pump does not necessarily need to operate continuously at maximum speed.

Variable-speed operation can be useful for:

• Water circulation
• Cooling systems
• Industrial fluid transfer
• Pressure systems
• Process pumping
• Utility systems

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Fan Systems

Industrial fans and blowers often require adjustable airflow.

The drive can change fan speed according to the required airflow.

Typical applications include:

• Factory ventilation
• Exhaust systems
• Cooling systems
• Industrial air handling
• Process ventilation

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Packaging Machinery

Packaging machinery often requires controlled motor speed.

The drive can be used for:

• Conveyor motors
• Feed rollers
• Product handling
• Material rollers
• Auxiliary rotating machinery

Network communication can allow the machine controller to coordinate drive operation with other parts of the production system.

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Material Handling

Material-handling equipment can benefit from controlled acceleration and deceleration.

The drive can provide a smoother movement profile.

Typical applications include:

• Transfer conveyors
• Roller conveyors
• Feed mechanisms
• Production-line transport
• Sorting systems
• Material-transfer equipment

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Feeder Systems

Feeders often require controlled and repeatable speed.

The drive can receive a speed reference from the machine controller and regulate motor operation.

This can be useful in:

• Product feeders
• Material feeders
• Packaging feeders
• Processing equipment
• Production-line feed systems

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Mixers

The drive can also be used for selected mixer applications.

However, mixer loads can have high starting torque.

For this reason, the motor’s actual current and torque requirement should be checked carefully before selecting the drive.

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17. Main Product Advantages

17.1 8.7 A Output Capacity

The 8.7 A output rating provides more capacity than smaller drive variants in the same general family.

This makes the model suitable for approximately 4 kW normal-duty applications.

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17.2 4 kW Normal-Duty Capability

The 4 kW normal-duty rating covers a broad range of industrial motor applications.

It is particularly suitable for medium-small industrial machinery.

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17.3 Compact Frame 1 Construction

The Frame 1 design helps keep the drive physically compact.

This is useful where cabinet space is limited.

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17.4 Embedded EtherNet/IP

Embedded network communication simplifies integration with automated machinery.

The drive can exchange commands, status information and diagnostic data with the control system.

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17.5 Dynamic Braking Transistor

The built-in braking transistor provides additional flexibility for applications requiring controlled stopping.

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17.6 Flexible Motor Control

The drive can support several motor-control approaches.

This allows it to be used in a wide range of industrial applications.

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17.7 PID Control

Built-in PID capability makes the drive suitable for selected process-control applications.

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17.8 Diagnostic Capability

Drive status and fault information can help maintenance personnel identify operating problems.

This can reduce troubleshooting time.

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17.9 Programmable Acceleration and Deceleration

Acceleration and deceleration ramps can be adjusted to suit the machine.

This helps reduce sudden mechanical loading.

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17.10 Industrial Automation Integration

The drive is designed to operate as part of an integrated automation system.

This is especially valuable for machines containing multiple drives, controllers, sensors and production components.

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18. Recommended Same-Series or Closely Related Models

The following models are useful for comparison when selecting another PowerFlex 755 drive with a similar voltage class or frame/rating range.

The 20G11RC8P7AA0NNNNN is particularly close to the target model in electrical characteristics.

The major distinction between the AA and JA configuration should be checked against the specific machine design and required catalog configuration before using one as a replacement for the other.

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19. Same-Series Electrical Comparison

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20. Five Popular Models from the Same Brand

The following models represent other commonly used products from the same brand portfolio and provide alternatives for different machine sizes and control requirements.

They should not automatically be treated as direct replacements for the target model.

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21. Same-Brand Model Selection Comparison

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22. Application Selection Guide

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23. Conveyor Application Advantages

When used on a conveyor, the drive can provide controlled acceleration and deceleration.

This is useful because a conveyor often has mechanical components that should not be subjected to sudden changes in torque.

Controlled starting can reduce mechanical shock.

Controlled stopping can also reduce stress on:

• Belts
• Rollers
• Gearboxes
• Couplings
• Bearings
• Shafts

The speed can also be adjusted to match the production rate.

For automated production lines, the embedded communication interface can allow the controller to coordinate conveyor speed with upstream and downstream equipment.

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24. Pump Application Advantages

A variable-speed pump can operate according to process demand.

The drive can receive a speed reference from the control system.

Alternatively, PID control can be used for selected process-control applications.

For example:

Pressure decreases → motor speed increases

Pressure increases → motor speed decreases

This provides a flexible control method for many industrial fluid systems.

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25. Fan Application Advantages

Fan applications often do not require maximum speed all the time.

The drive can reduce motor speed when the required airflow decreases.

The operating speed can be increased when airflow demand increases.

This provides better control of the ventilation process and allows the machine designer to avoid unnecessary fixed-speed operation.

Typical applications include:

• Factory exhaust
• Cooling fans
• Process ventilation
• Industrial air circulation
• Blowers

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26. Packaging Machine Advantages

Packaging machinery frequently requires repeatable and adjustable motor speeds.

The drive can be integrated into the machine’s control architecture.

Possible uses include:

• Product conveyors
• Feed rollers
• Material handling
• Film rollers
• Auxiliary drives
• Transfer mechanisms

The ability to monitor drive status and faults through the network can also simplify machine diagnostics.

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27. Material Handling Advantages

Material-handling machinery can benefit from controlled motor acceleration.

When a conveyor is loaded, the starting torque requirement can be higher than the steady-state requirement.

A properly configured drive can provide controlled acceleration rather than applying an abrupt speed command.

This can reduce mechanical shock and improve overall machine operation.

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28. Cabinet Installation

Because the drive has an IP20 open-type construction, it should normally be installed inside a suitable control cabinet.

The cabinet should allow sufficient room for:

• Power wiring
• Motor wiring
• Network wiring
• Cooling airflow
• Maintenance access
• Cable bending
• Grounding connections
• Adjacent components

The drive’s approximate physical size is:

400.5 mm × 110 mm × 211 mm

The approximate weight is:

6 kg

The actual enclosure should be larger than the drive itself.

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29. Environmental Considerations

A clean and adequately ventilated cabinet is important for long-term drive reliability.

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30. Maintenance

Routine maintenance should include inspection of the drive’s physical and electrical condition.

Important items include:

• Cooling fan condition
• Airflow
• Ventilation openings
• Electrical connections
• Grounding
• Motor cables
• Network connections
• Cabinet cleanliness
• Drive temperature
• Fault history
• Unusual vibration
• Unusual electrical noise

Dust accumulation should be minimized.

Poor airflow can increase the operating temperature of the power electronics.

Loose electrical connections can create additional heating and may cause unreliable operation.

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31. Troubleshooting Reference

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32. Important Selection Points

When purchasing, replacing or engineering around the 20G11RC8P7JA0NNNNN, several points should be checked.

Motor Voltage

The motor voltage must match the drive’s output voltage capability.

Motor Current

Motor current is one of the most important selection criteria.

Motor Power

The motor’s kW rating should be checked against the appropriate normal-duty or heavy-duty drive rating.

Load Type

A fan, pump and conveyor do not necessarily have the same torque characteristics.

Acceleration

The required acceleration time should be considered.

Deceleration

The required stopping time should be evaluated.

Braking

If rapid stopping is required, the braking system should be appropriately designed.

Communication

If the machine requires network integration, the communication architecture should be checked.

Cabinet

The cabinet should provide adequate physical clearance and airflow.

Environment

Temperature, dust, humidity and contamination should be considered.

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33. Recommended Model by Power Requirement

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34. Main Advantages Compared with Smaller Drives

The 20G11RC8P7JA0NNNNN has several advantages when compared with lower-current models in the same general range.

First, its 8.7 A output capability gives it a higher motor-capacity range.

Second, its 4 kW normal-duty rating allows it to handle a broader selection of industrial machinery.

Third, the PowerFlex 755 platform provides advanced functionality for applications where a simple speed controller may not be sufficient.

Fourth, the embedded EtherNet/IP capability makes the drive suitable for integrated automation systems.

Fifth, dynamic braking capability gives the machine designer additional flexibility for applications involving controlled stopping.

Sixth, its Frame 1 construction provides a relatively compact physical package for the available functionality.

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35. Product Advantages in Practical Use

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36. Overall Product Evaluation

The 20G11RC8P7JA0NNNNN is a strong choice for industrial motor-control applications requiring more than basic variable-speed operation.

Its combination of 400 VAC three-phase input, 8.7 A output current, 4 kW normal-duty capacity, 2.2 kW heavy-duty capacity, Frame 1 construction, forced-air cooling, IP20 protection, embedded EtherNet/IP communication and dynamic braking capability makes it suitable for a wide range of industrial machinery.

It is particularly appropriate for conveyors, pumps, fans, feeders, material-handling systems, packaging machinery and other automated rotating equipment.

For a smaller motor, the 3.5 A and 5.0 A PowerFlex 755 variants can provide a better capacity match.

For a larger motor, an 11.5 A-class PowerFlex 755 model can provide additional current capacity.

For applications where physical size, cost and basic functionality are more important than the advanced capabilities of the PowerFlex 755 platform, compact drive families can be considered.

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37. Final Technical Summary

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38. Short Product Description for a Catalog

20G11RC8P7JA0NNNNN is a PowerFlex 755 industrial AC variable frequency drive designed for three-phase 400 VAC motor-control applications. The drive provides an 8.7 A output rating, approximately 4 kW normal-duty capacity and 2.2 kW heavy-duty capacity. It uses a compact Frame 1 construction with forced-air cooling and IP20 open-type protection. The configuration includes embedded EtherNet/IP communication, AC input with precharge and DC terminals, EMC filtering, CM jumper configuration, dynamic-braking transistor capability and a blank/no-HIM arrangement. With programmable acceleration and deceleration, flexible motor-control functions, process-control capability and industrial diagnostics, the drive is suitable for conveyors, pumps, fans, feeders, packaging equipment, material-handling systems and other automated machinery. Approximate dimensions are 400.5 × 110 × 211 mm and approximate product weight is 6 kg.