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20G11RD011AA0NNNNN — PowerFlex 755 AC Drive Product Profile

1. Product Overview

The 20G11RD011AA0NNNNN is an industrial AC variable frequency drive designed for three-phase motor speed, torque and process control.

It belongs to the PowerFlex 755 series and is intended for applications where the motor needs more than simple fixed-speed operation. The drive can provide controlled acceleration, controlled deceleration, adjustable operating speed, motor protection, process-control functions, network communication and diagnostic information.

This particular configuration is a 480 VAC-class, three-phase, 11 A drive. Its normal-duty rating is approximately 5.5 kW / 7.5 HP, while its heavy-duty rating is approximately 4 kW / 5 HP.

The unit uses a Frame 1 mechanical configuration, IP20 open-type construction, forced-air cooling, an internal dynamic-braking transistor, EMC filtering and embedded EtherNet/IP communication.

The catalog configuration does not include a keypad/HIM. This makes it particularly suitable for applications where drive operation and monitoring are handled through the machine control system or network rather than through a permanently installed local keypad.

The product is also suitable for a wide range of industrial machinery, including conveyors, pumps, fans, feeders, material-handling systems, process equipment and automated production machinery.

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2. Brand and Series

Item	Specification
Brand	Allen-Bradley
Product family	PowerFlex
Product series	PowerFlex 755
Series platform	PowerFlex 750-Series
Product category	AC Variable Frequency Drive
Product type	Industrial Motor Drive
Main function	Variable-speed AC motor control
Cooling method	Forced air
Enclosure	IP20 Open Type
Frame	Frame 1
Communication	Embedded EtherNet/IP
Dynamic braking	Internal DB transistor
Local keypad	No HIM / blank configuration

The PowerFlex 755 platform is intended for applications where flexibility, network integration and advanced motor-control functions are important.

Compared with a basic compact variable-frequency drive, this series provides a more extensive set of control and integration capabilities.

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3. Complete Basic Specification

Parameter	Specification
Model	20G11RD011AA0NNNNN
Brand	Allen-Bradley
Product series	PowerFlex 755
Product family	PowerFlex 750-Series
Drive type	AC variable frequency drive
Input voltage class	480 VAC
Input voltage range	380–480 VAC class
Input phase	3-phase
Output phase	3-phase
Rated output current	11 A
Normal-duty power	5.5 kW
Normal-duty horsepower	7.5 HP
Heavy-duty power	4 kW
Heavy-duty horsepower	5 HP
Frame size	Frame 1
Enclosure rating	IP20
Enclosure type	Open Type
Cooling	Air cooled / forced air
Input configuration	AC input with precharge
DC terminals	Yes
Dynamic braking transistor	Yes
EMC filtering	Yes
CM capacitor configuration	Jumper removed
Human interface module	No HIM
Network communication	Embedded EtherNet/IP
PID control	Supported
Safety functions	Supported through applicable configuration/options
Integrated motion	Not included in this particular configuration
Approx. height	400 mm
Approx. width	190 mm
Approx. depth	211.1 mm
Approx. dimensions	400 × 190 × 211.1 mm
Approx. weight (kg)	6 kg
Mounting	Vertical cabinet/panel mounting
Typical installation	Industrial control cabinet

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4. Electrical Parameters

The electrical rating is one of the most important characteristics of the 20G11RD011AA0NNNNN.

The drive is intended for a three-phase 480 VAC-class power system and provides an 11 A motor-output rating.

Its normal-duty rating is approximately 5.5 kW, corresponding to approximately 7.5 HP.

For heavy-duty operation, the applicable motor rating is approximately 4 kW, or 5 HP.

Electrical Parameter	Value
Model	20G11RD011AA0NNNNN
Voltage class	480 VAC
Typical input range	380–480 VAC
Number of input phases	3
Number of output phases	3
Output current	11 A
Normal-duty rating	5.5 kW
Normal-duty horsepower	7.5 HP
Heavy-duty rating	4 kW
Heavy-duty horsepower	5 HP
Input frequency	50/60 Hz
DC bus capability	Yes
Input precharge	Yes
Dynamic braking transistor	Yes
EMC filter	Yes
EtherNet/IP	Embedded

The motor should be selected according to its actual rated current and application duty.

A motor’s kW or HP rating alone should not be used as the only selection criterion.

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5. Normal-Duty Rating

The approximately 5.5 kW normal-duty rating makes this model suitable for a broad range of general industrial applications.

Normal-duty applications generally have moderate overload requirements and relatively predictable mechanical loading.

Typical examples include:

• Industrial fans
• Pumps
• Conveyor systems
• Rollers
• Material-handling equipment
• Process machinery
• Production-line equipment
• Industrial ventilation systems
• General rotating machinery

The 11 A output rating gives the drive a useful capacity for medium-sized industrial motors.

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6. Heavy-Duty Rating

The heavy-duty rating is approximately 4 kW / 5 HP.

Heavy-duty operation should be considered when the machine has greater starting torque requirements, frequent acceleration and deceleration, high mechanical inertia or substantial load variations.

Potential applications include:

• Loaded conveyors
• Feeders
• Material-handling machines
• High-inertia equipment
• Repetitive start/stop machinery
• Machines requiring higher acceleration torque

The actual motor current, load profile, acceleration time and overload requirements should always be evaluated before final selection.

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7. Physical Dimensions and Weight

The 20G11RD011AA0NNNNN uses a Frame 1 mechanical configuration.

The approximate physical dimensions are:

400 mm high × 190 mm wide × 211.1 mm deep

The approximate product weight is:

6 kg

These dimensions refer to the drive itself and should not be interpreted as the minimum required cabinet dimensions.

Additional space is normally required for:

• Power wiring
• Motor wiring
• Network cables
• Cable bending radius
• Ventilation
• Maintenance access
• Grounding
• Adjacent components

Mechanical Parameter	Specification
Model	20G11RD011AA0NNNNN
Frame size	Frame 1
Height	Approx. 400 mm
Width	Approx. 190 mm
Depth	Approx. 211.1 mm
Dimensions	Approx. 400 × 190 × 211.1 mm
Height	Approx. 15.75 in
Width	Approx. 7.48 in
Depth	Approx. 8.31 in
Weight (kg)	Approx. 6 kg
Cooling	Forced air
Installation	Vertical
Enclosure	IP20

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8. Product Construction

The drive uses an IP20 open-type enclosure.

This construction is intended for installation inside a suitable electrical enclosure rather than direct outdoor or exposed installation.

The cabinet should protect the drive from:

• Water
• Excessive dust
• Conductive contamination
• Chemical contamination
• Mechanical damage
• Uncontrolled environmental conditions

Adequate ventilation is also important because the drive produces heat during operation.

The forced-air cooling system requires sufficient airflow around the drive.

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9. Embedded EtherNet/IP Communication

One of the major features of this configuration is its embedded EtherNet/IP communication capability.

The drive can communicate directly with the machine-control network.

This allows the drive to exchange operating commands and status information with the controller.

Typical information can include:

Network Information	Purpose
Start command	Starts motor operation
Stop command	Stops motor operation
Speed reference	Sets target motor speed
Direction	Controls motor direction
Actual speed	Reports operating speed
Output current	Indicates motor loading
Drive status	Reports operating condition
Warning status	Indicates potential issues
Fault status	Reports drive faults
Diagnostic information	Supports troubleshooting
Parameter information	Supports configuration
Feedback information	Supports machine monitoring

This type of communication is particularly useful for automated production equipment.

Instead of operating independently, the drive can become part of a larger machine-control system.

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10. Motor Control

The PowerFlex 755 platform is designed for flexible AC motor control.

Depending on the application and configuration, the drive can support different control methods.

V/Hz Control

V/Hz control can be appropriate for relatively straightforward applications.

Examples include:

• Fans
• Pumps
• Basic conveyors
• Simple rotating equipment

Sensorless Vector Control

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

It can be useful where better low-speed performance is required.

Vector-Based Control

For more demanding machinery, vector-based control can provide improved torque regulation and speed control.

This makes the platform suitable for applications where the motor needs to respond more precisely to changes in load.

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11. PID Process Control

The drive supports PID-based process control.

This can be useful when motor speed needs to respond automatically to a process variable.

For example, in a pump system:

Pressure below setpoint → motor speed increases

Pressure above setpoint → motor speed decreases

This approach can be useful in:

• Pumping systems
• Pressure-control systems
• Flow-control systems
• Cooling systems
• Ventilation systems
• Process circulation

The drive can therefore perform both motor-speed control and selected process-control functions.

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12. Dynamic Braking

The configuration includes an internal dynamic-braking transistor.

Dynamic braking is useful when the motor must decelerate relatively quickly.

During motor deceleration, mechanical energy can be returned to the drive’s DC bus.

A properly selected external braking resistor can then dissipate this energy as heat.

Dynamic braking can be valuable in applications such as:

• Conveyors
• Rollers
• Material-handling systems
• High-inertia machinery
• Repetitive stopping applications
• Feed mechanisms
• Production equipment requiring controlled stopping

The braking resistor must be selected according to the actual braking energy and duty cycle.

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13. EMC Filtering

The model includes EMC filtering.

This can help control conducted electrical interference associated with the drive and motor system.

EMC considerations are especially important in installations containing:

• PLC systems
• Industrial Ethernet
• Sensors
• Measurement equipment
• Communication equipment
• Motion-control systems
• Multiple variable-frequency drives

Good cable routing, grounding and shielding practices should still be used.

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14. No HIM Configuration

The model is configured without a local Human Interface Module.

This means the drive does not rely on a permanently installed keypad for normal operation.

This configuration can be advantageous when the drive is installed inside a cabinet and controlled primarily through:

• PLC commands
• EtherNet/IP
• Remote operator panels
• Supervisory systems
• Machine-control software

For applications requiring frequent local manual adjustment, an appropriate interface option can be considered separately.

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15. Main Product Applications

15.1 Conveyor Systems

The drive is well suited to conveyor applications.

It can control conveyor speed and provide controlled acceleration and deceleration.

This can reduce mechanical shock to:

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

The drive can also receive speed commands through the industrial network.

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15.2 Pump Systems

Pump applications are another important use case.

Variable-speed operation allows the motor to operate according to process requirements instead of remaining at one fixed speed.

Possible applications include:

• Water pumps
• Cooling pumps
• Process pumps
• Industrial circulation
• Pressure-control systems
• Fluid-transfer equipment

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15.3 Fan and Blower Systems

Fans and blowers often require variable airflow.

The drive can regulate fan speed according to the process requirement.

Applications include:

• Factory ventilation
• Industrial exhaust
• Cooling systems
• Process air
• Blowers
• Air-handling systems

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15.4 Material Handling

Material-handling equipment can benefit from controlled acceleration.

This is particularly useful where products or materials need to move smoothly through a production process.

Possible applications include:

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

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15.5 Packaging Machinery

Packaging equipment frequently requires accurate and repeatable motor-speed control.

The drive can be used for:

• Feed rollers
• Product conveyors
• Transfer mechanisms
• Material rollers
• Auxiliary machine axes
• Packaging-line equipment

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15.6 Feeders

Feeders require controlled and repeatable motor speed.

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

Typical applications include:

• Product feeders
• Material feeders
• Processing feeders
• Packaging feeders
• Production-line feeding systems

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15.7 Process Machinery

The drive can be used in various process machines where adjustable motor speed is required.

Examples include:

• Mixers
• Processing equipment
• Rotating machinery
• Industrial production machines
• Auxiliary process equipment

For high-torque mixers or machines with severe starting conditions, the actual torque requirements should be checked carefully.

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16. Product Advantages

16.1 11 A Output Current

The 11 A output rating provides a useful capacity for medium-sized industrial motors.

It gives the drive more output capability than lower-current Frame 1 models.

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16.2 5.5 kW Normal-Duty Capacity

The approximately 5.5 kW normal-duty rating makes the model suitable for a wide range of industrial equipment.

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16.3 4 kW Heavy-Duty Capability

The heavy-duty rating provides flexibility for applications with more demanding torque and acceleration requirements.

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16.4 Embedded EtherNet/IP

Integrated network communication allows the drive to become part of an automated control architecture.

This can simplify machine integration and centralized monitoring.

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16.5 Dynamic Braking

The integrated braking transistor gives the machine designer the option of adding dynamic braking where rapid or controlled deceleration is needed.

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16.6 Flexible Control

The PowerFlex 755 platform supports multiple control approaches.

This allows one drive family to be used for different machine requirements.

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16.7 PID Capability

Built-in PID functionality can reduce the need for additional control hardware in suitable process applications.

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16.8 Diagnostic Functions

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

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16.9 Compact Frame 1 Design

Despite its advanced functionality, the drive remains within a Frame 1 mechanical platform.

This can simplify cabinet design for applications in this power range.

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16.10 Industrial Automation Compatibility

The drive is well suited to automated machinery where motor control must be coordinated with other equipment.

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17. Technical Parameter Table

Category	Parameter	Specification
Identification	Model	20G11RD011AA0NNNNN
Identification	Brand	Allen-Bradley
Identification	Series	PowerFlex 755
Identification	Platform	PowerFlex 750-Series
Electrical	Voltage	480 VAC class
Electrical	Input range	380–480 VAC class
Electrical	Input phase	3-phase
Electrical	Output phase	3-phase
Electrical	Output current	11 A
Electrical	Normal-duty	5.5 kW
Electrical	Normal-duty HP	7.5 HP
Electrical	Heavy-duty	4 kW
Electrical	Heavy-duty HP	5 HP
Construction	Frame	1
Construction	Enclosure	IP20
Construction	Type	Open Type
Construction	Cooling	Forced air
Communication	EtherNet/IP	Embedded
Communication	Integrated motion	No
Braking	Dynamic braking transistor	Yes
Filtering	EMC filter	Yes
Filtering	CM jumper	Removed
Interface	HIM	No HIM
Control	PID	Yes
Safety	Safety capability	Supported through applicable configuration
Mechanical	Height	Approx. 400 mm
Mechanical	Width	Approx. 190 mm
Mechanical	Depth	Approx. 211.1 mm
Mechanical	Dimensions	Approx. 400 × 190 × 211.1 mm
Mechanical	Weight (kg)	Approx. 6 kg
Installation	Mounting	Vertical
Application	Motor control	Variable-speed AC motor control
Application	Typical loads	Pumps, fans, conveyors, feeders
Environment	Installation	Protected control cabinet

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18. Five Same-Series or Closely Related Models

The following models are useful comparison choices within the same PowerFlex 755 family.

Exact suffix options can change the configuration of filtering, braking, communication, interface and other features, so the complete catalog number should be checked before treating a model as a direct replacement.

Model	Series	Voltage Class	Current Class	Approx. Power Class	Frame	Approx. Dimensions	Weight (kg)
20G11RD011JA0NNNNN	PowerFlex 755	480 VAC	11 A	5.5 kW ND / 4 kW HD	1	Approx. 400 × 190 × 211 mm	Approx. 6 kg
20G11RD8P0AA0NNNNN	PowerFlex 755	480 VAC class	8.0 A class	Approx. 4 kW class	1	Approx. 400 × 190 × 211 mm	Approx. 6 kg
20G11RD2P1AA0NNNNN	PowerFlex 755	480 VAC class	2.1 A class	Approx. 1.5 kW class	1	Approx. 400 × 190 × 211 mm	Approx. 6 kg
20G11ND3P4AA0NNNNN	PowerFlex 755	480 VAC class	3.4 A class	Approx. 2.2 kW class	1	Approx. 400 × 190 × 211 mm	Approx. 6 kg
20G11ND2P1AA0NNNNN	PowerFlex 755	480 VAC class	2.1 A class	Approx. 1.5 kW class	1	Approx. 400 × 190 × 211 mm	Approx. 6 kg

These models are best viewed as selection alternatives within the same drive platform, rather than automatic substitutes.

The target model has a comparatively high current capacity within the smaller Frame 1 range.

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19. Same-Series Comparison

Specification	20G11RD2P1AA0NNNNN	20G11ND2P1AA0NNNNN	20G11ND3P4AA0NNNNN	20G11RD8P0AA0NNNNN	20G11RD011JA0NNNNN
Series	PowerFlex 755	PowerFlex 755	PowerFlex 755	PowerFlex 755	PowerFlex 755
Voltage class	480 VAC	480 VAC	480 VAC	480 VAC	480 VAC
Current class	2.1 A	2.1 A	3.4 A	8.0 A	11 A
Approx. power class	1.5 kW	1.5 kW	2.2 kW	4 kW	5.5 kW
Frame	1	1	1	1	1
Cooling	Forced air	Forced air	Forced air	Forced air	Forced air
Enclosure	IP20	IP20	IP20	IP20	IP20
Network	EtherNet/IP configuration dependent	EtherNet/IP configuration dependent	EtherNet/IP configuration dependent	EtherNet/IP configuration dependent	EtherNet/IP
Approx. height	400 mm	400 mm	400 mm	400 mm	400 mm
Approx. width	190 mm	190 mm	190 mm	190 mm	190 mm
Approx. depth	211 mm	211 mm	211 mm	211 mm	211 mm
Weight (kg)	Approx. 6 kg	Approx. 6 kg	Approx. 6 kg	Approx. 6 kg	Approx. 6 kg

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20. Five Popular Models from the Same Brand

For broader selection, the following models represent other commonly used drive families from the same brand.

They cover smaller and more compact applications than the PowerFlex 755.

Model	Product Series	Voltage Class	Approx. Current Class	Typical Power Class	Typical Application	Approx. Dimensions	Weight (kg)
25B-D2P3N104	PowerFlex 525	400 VAC class	2.3 A	Approx. 0.75 kW	Small machines, fans, pumps	Approx. 200 × 90 × 180 mm	Approx. 2 kg
25B-D4P0N104	PowerFlex 525	400 VAC class	4.0 A	Approx. 1.5 kW	Pumps, fans, conveyors	Approx. 200 × 90 × 180 mm	Approx. 2–3 kg
25B-D6P0N104	PowerFlex 525	400 VAC class	6.0 A	Approx. 2.2 kW	General machinery	Approx. 200 × 90 × 180 mm	Approx. 2–3 kg
25C-D2P3N104	PowerFlex 523	400 VAC class	2.3 A	Approx. 0.75 kW	Basic motor control	Approx. 200 × 90 × 180 mm	Approx. 2 kg
25C-D4P0N104	PowerFlex 523	400 VAC class	4.0 A	Approx. 1.5 kW	Compact machinery	Approx. 200 × 90 × 180 mm	Approx. 2–3 kg

These smaller drive families are generally better suited to applications where the motor size and control requirements are below the range of the PowerFlex 755.

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21. Comparison Between the Target Model and Smaller Drives

Requirement	20G11RD011AA0NNNNN	25B-D2P3N104	25B-D4P0N104	25B-D6P0N104
Product class	Advanced industrial drive	Compact drive	Compact drive	Compact drive
Series	PowerFlex 755	PowerFlex 525	PowerFlex 525	PowerFlex 525
Typical motor size	Up to approx. 5.5 kW ND	Approx. 0.75 kW class	Approx. 1.5 kW class	Approx. 2.2 kW class
Current	11 A	2.3 A	4.0 A	6.0 A
Frame	1	Compact frame	Compact frame	Compact frame
IP rating	IP20	IP20 class	IP20 class	IP20 class
Network capability	Embedded EtherNet/IP	Ethernet-capable	Ethernet-capable	Ethernet-capable
PID	Yes	Yes	Yes	Yes
Dynamic braking	Available through appropriate configuration	Application dependent	Application dependent	Application dependent
Approx. weight (kg)	Approx. 6 kg	Approx. 2 kg	Approx. 2–3 kg	Approx. 2–3 kg
Best suited for	Advanced industrial machinery	Small machines	Small/medium machines	Medium-small machines

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22. Recommended Applications by Model

Application	Recommended Model Class	Reason
Small fan	25B-D2P3N104	Compact and suitable for smaller motors
Small pump	25B-D4P0N104	Suitable for small pump systems
1.5 kW conveyor	25B-D4P0N104	Compact conveyor solution
2.2 kW machine	25B-D6P0N104	Higher compact-drive capacity
2.2 kW industrial application	20G11ND3P4AA0NNNNN	PowerFlex 755 platform
4 kW machine	20G11RD8P0AA0NNNNN	Higher PowerFlex 755 capacity
5.5 kW normal-duty machine	20G11RD011AA0NNNNN	11 A / 5.5 kW class
High-inertia 4 kW application	20G11RD011AA0NNNNN	Heavy-duty capability
Automated conveyor	20G11RD011AA0NNNNN	Network integration and advanced control
Process pump	20G11RD011AA0NNNNN	PID and variable-speed control

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23. Why Choose the 20G11RD011AA0NNNNN?

The main reason to select the 20G11RD011AA0NNNNN is its combination of motor capacity and advanced drive functionality.

The 11 A output rating gives it enough capacity for a significant range of industrial motors.

The 5.5 kW normal-duty rating makes it appropriate for many conveyors, pumps, fans and general-purpose machines.

The 4 kW heavy-duty rating provides additional flexibility for applications with more demanding load characteristics.

The embedded EtherNet/IP interface is another major advantage.

For an automated machine, the drive can exchange information directly with the control system.

This reduces the need for separate communication hardware and makes centralized monitoring easier.

The dynamic-braking transistor is useful where the machine requires controlled deceleration.

The IP20 Frame 1 design is also practical for cabinet-based industrial installations.

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24. Advantages for Conveyor Systems

For conveyor applications, the drive can provide:

• Adjustable conveyor speed
• Controlled acceleration
• Controlled deceleration
• Motor overload protection
• Network-based start/stop commands
• Remote speed adjustment
• Drive-status monitoring
• Fault information
• Process integration

A conveyor can therefore operate at different speeds depending on the production requirement.

For example, a production line may use a low speed during setup and a higher speed during normal production.

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25. Advantages for Pump Systems

For pumps, variable-speed operation allows the motor to respond to process demand.

Instead of maintaining a constant motor speed, the drive can adjust the motor according to the required operating point.

This can be especially useful for:

• Pressure systems
• Water circulation
• Cooling loops
• Industrial fluid handling
• Process pumping
• Transfer pumps

The integrated PID capability can also be useful for maintaining a process variable.

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26. Advantages for Fan Systems

Industrial fans frequently operate under changing airflow requirements.

The drive can regulate fan speed according to the required process condition.

Applications can include:

• Factory exhaust
• Ventilation
• Cooling
• Process-air systems
• Blowers
• Air-handling equipment

The ability to control motor speed also provides greater flexibility than a simple fixed-speed motor arrangement.

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27. Advantages for Material Handling

Material-handling equipment benefits from smooth motor control.

Abrupt acceleration can cause unnecessary mechanical stress.

The drive can provide programmable acceleration and deceleration profiles.

This can help improve the movement of:

• Boxes
• Containers
• Raw materials
• Production components
• Packaged products
• Bulk materials

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28. Advantages for Automated Machinery

The drive is particularly useful when the machine contains a central controller.

The controller can send commands to the drive through the network.

The drive can then return status and diagnostic information.

This creates a two-way communication relationship between the machine controller and the motor drive.

Typical information includes:

Controller → Drive

• Start
• Stop
• Speed reference
• Direction
• Reset
• Control commands

Drive → Controller

• Running status
• Actual speed
• Current
• Warning
• Fault
• Drive status
• Diagnostic information

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29. Installation Considerations

The drive should be mounted in an appropriate electrical enclosure.

Because it uses IP20 construction, it is not intended to be treated as a fully sealed field enclosure.

The cabinet should provide:

• Adequate ventilation
• Correct cable routing
• Appropriate grounding
• Sufficient maintenance clearance
• Suitable environmental protection
• Adequate heat dissipation
• Separation between power and sensitive signal wiring where necessary

The approximate drive dimensions are:

400 × 190 × 211.1 mm

The approximate weight is:

6 kg

The cabinet should be sized with additional clearance rather than simply matching these external dimensions.

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30. Maintenance Recommendations

Regular inspection can help maintain reliable operation.

Recommended inspection points include:

Maintenance Item	Recommended Check
Cooling fan	Check operation and unusual noise
Airflow	Ensure ventilation is not blocked
Cabinet	Check for excessive dust
Power terminals	Check connection condition
Motor cables	Check insulation and connections
Grounding	Verify grounding integrity
Network cable	Check physical condition
Drive temperature	Monitor for abnormal heating
Fault history	Review recurring faults
Mechanical load	Check for abnormal motor loading
Braking system	Inspect when dynamic braking is used

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31. Troubleshooting Guide

Symptom	Areas to Check
Motor will not start	Enable command, start command and fault status
Motor trips during acceleration	Acceleration time, load and motor current
Motor runs too slowly	Speed reference and frequency limits
Motor overheats	Motor load and cooling
Drive overheats	Cabinet temperature and airflow
Overcurrent fault	Motor, mechanical load and acceleration
Overvoltage during stopping	Deceleration time and braking system
Network communication failure	Network wiring and configuration
Unexpected stopping	Fault history and control commands
Process variable unstable	PID settings and feedback signal

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32. Selection Checklist

Before using the 20G11RD011AA0NNNNN, the following points should be checked.

Motor Voltage

Confirm that the motor voltage is compatible with the drive output.

Motor Current

Confirm the motor full-load current.

The 11 A drive rating should be compared with the actual motor current.

Motor Power

Confirm whether the application should be treated as normal-duty or heavy-duty.

Load Type

Determine whether the machine is a variable-torque, constant-torque or demanding high-inertia application.

Acceleration

Determine the required acceleration time.

Deceleration

Determine whether rapid stopping is required.

Braking

If rapid stopping is required, evaluate the braking resistor and braking duty.

Communication

Confirm the required network architecture.

Cabinet

Confirm that there is enough room for the drive, wiring and airflow.

Environment

Confirm temperature, humidity, dust and contamination conditions.

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33. Overall Product Advantages

Advantage	Practical Benefit
11 A output	Supports medium industrial motors
5.5 kW normal-duty	Suitable for many general industrial machines
4 kW heavy-duty	Suitable for demanding applications within the rating
EtherNet/IP	Easy integration into automated systems
PID	Useful for process-control applications
Dynamic braking transistor	Supports controlled stopping
EMC filtering	Helps manage electrical interference
Frame 1	Compact industrial drive platform
IP20	Suitable for protected cabinet installation
Forced-air cooling	Supports thermal management
Diagnostics	Easier maintenance and troubleshooting
Programmable ramps	Smoother acceleration and deceleration
Flexible motor control	Suitable for different machine types
No HIM	Suitable for network-controlled cabinets

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34. Important Note About the Model Status

The 20G11RD011AA0NNNNN is an older PowerFlex 755 catalog configuration.

For new equipment designs, a later configuration or direct replacement should be evaluated where appropriate.

A commonly associated direct-replacement configuration is 20G11RD011JA0NNNNN.

However, a replacement should not be selected solely because the current rating is similar.

The complete catalog configuration should be compared, including:

• Input configuration
• Output current
• Normal-duty rating
• Heavy-duty rating
• Filtering
• CM capacitor configuration
• Dynamic braking
• Network communication
• Safety functions
• HIM configuration
• Firmware compatibility
• Physical dimensions
• Installation requirements

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35. Product Positioning

The 20G11RD011AA0NNNNN can be considered a medium-capacity industrial drive within the PowerFlex 755 platform.

It is more advanced than a basic compact variable-frequency drive and is particularly appropriate when the machine requires integrated industrial networking and advanced motor-control functions.

For a small pump or fan, a smaller compact drive can often be more economical.

For a medium-sized automated conveyor, feeder or process machine, the PowerFlex 755 platform can provide greater flexibility.

For applications above the 5.5 kW class, a larger current-rated drive should be selected.

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36. Final Product Summary

Category	Final Specification
Model	20G11RD011AA0NNNNN
Brand	Allen-Bradley
Series	PowerFlex 755
Family	PowerFlex 750-Series
Product type	Industrial AC Variable Frequency Drive
Voltage	480 VAC class
Input	3-phase
Output	3-phase
Output current	11 A
Normal-duty rating	5.5 kW
Normal-duty horsepower	7.5 HP
Heavy-duty rating	4 kW
Heavy-duty horsepower	5 HP
Frame	Frame 1
Enclosure	IP20
Construction	Open Type
Cooling	Forced air
Communication	Embedded EtherNet/IP
Dynamic braking	DB transistor
EMC filtering	Yes
CM jumper	Removed
HIM	No HIM
PID	Yes
Integrated motion	No
Approx. height	400 mm
Approx. width	190 mm
Approx. depth	211.1 mm
Approx. dimensions	400 × 190 × 211.1 mm
Approx. weight (kg)	6 kg
Main applications	Pumps, fans, conveyors, feeders, material handling
Main strengths	Network integration, motor control, diagnostics, braking capability
Installation	Industrial control cabinet

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37. Conclusion

The 20G11RD011AA0NNNNN is a capable industrial AC drive for three-phase 480 VAC motor applications.

Its 11 A output current, 5.5 kW normal-duty rating, 4 kW heavy-duty rating, Frame 1 construction, IP20 enclosure, embedded EtherNet/IP, dynamic-braking transistor, EMC filtering, PID capability and advanced motor-control functions make it suitable for a broad range of industrial automation equipment.

The drive is particularly attractive for machines where the motor needs to be integrated into a larger control system.

Conveyors, pumps, fans, feeders and material-handling systems can all benefit from adjustable motor speed, controlled acceleration and deceleration, network communication and diagnostic functions.

Its approximate dimensions are 400 × 190 × 211.1 mm, with an approximate weight of 6 kg.

For smaller machines, compact drive families can reduce physical size and overall system complexity.

For applications requiring a similar PowerFlex 755 architecture but different motor capacity, the 2.1 A, 3.4 A and 8.0 A classes can be considered.

For applications close to the upper end of this Frame 1 range, the 11 A configuration provides the higher current capacity required for approximately 5.5 kW normal-duty operation.

When selecting a replacement or alternative, however, the complete catalog configuration should always be matched rather than selecting by model family or horsepower alone.