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20G11BF590AN0NNNNN PowerFlex 755 AC Drive — Detailed Product Information, Technical Parameters, Applications, Advantages and Related Models

1. Product Overview

The 20G11BF590AN0NNNNN is a high-power industrial AC variable frequency drive from the Allen-Bradley PowerFlex 755 series. It is designed for demanding three-phase motor-control applications where conventional compact frequency converters are not sufficient.

This model is configured for a 690 VAC, three-phase power system and provides a continuous output current rating of approximately 590 A. Its published power ratings are approximately 630 kW for Light Duty, 560 kW for Normal Duty and 450 kW for Heavy Duty.

The drive uses an air-cooled design, a Frame 9 power architecture and a Type 1 / IP20, 600 mm deep MCC-style construction. It is intended for installation in a suitable industrial electrical environment, particularly applications where a large motor drive is installed as part of a centralized motor-control or electrical distribution system.

The model includes embedded EtherNet/IP communication, allowing it to be integrated into an industrial automation network. This allows operating commands, speed references, status information, fault information and selected drive data to be exchanged with the plant control system.

The model is also configured with an EMC filter, while the common-mode capacitor arrangement is associated with the catalog-number configuration. It does not include an internal dynamic-braking resistor or internal dynamic-braking transistor.

The 20G11BF590AN0NNNNN is therefore best understood as a large industrial variable-speed drive intended for motors in the several-hundred-kilowatt range rather than for small machine motors.

The product is particularly appropriate for applications involving large pumps, fans, conveyors, compressors, process machinery, material-handling equipment, mining machinery and other industrial loads requiring controlled motor speed.

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2. Basic Product Information

Item	Specification
Product Model	20G11BF590AN0NNNNN
Brand	Allen-Bradley
Product Family	PowerFlex
Product Series	PowerFlex 755
Product Type	Air-Cooled AC Variable Frequency Drive
Drive Class	High-Power Industrial AC Drive
Input Voltage	690 VAC
Input Phase	3 Phase
Input Frequency	50/60 Hz system dependent
Rated Output Current	590 A
Light Duty Rating	Approximately 630 kW
Normal Duty Rating	Approximately 560 kW
Heavy Duty Rating	Approximately 450 kW
Frame Size	Frame 9
Cooling	Air Cooled / Forced Air
Enclosure	IP20 / Type 1
Mechanical Construction	600 mm Deep MCC Style
Approx. Height	2,453 mm
Approx. Width	1,200 mm
Approx. Depth	600 mm
Approx. Weight (kg)	Approximately 1,246 kg
Input Configuration	AC Input with Precharge and DC Terminals
Communication	Embedded EtherNet/IP
Filtering	EMC Filter
Common-Mode Configuration	Jumper Removed
Dynamic Braking	None
HIM	Blank / No HIM
Motor Type	Three-Phase AC Motor
Installation	Industrial Electrical Cabinet / MCC
Application Level	Medium-to-High Power Industrial Motor Control
Typical Motor Range	Several hundred kW
Product Architecture	PowerFlex 755
Primary Function	Variable-Speed AC Motor Control

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3. Detailed Technical Parameters

Parameter	Technical Specification
Catalog Number	20G11BF590AN0NNNNN
Brand	Allen-Bradley
Series	PowerFlex 755
Drive Type	AC Variable Frequency Drive
Input Voltage	690 VAC
Input Phase	Three Phase
Input Frequency	50/60 Hz, application dependent
Output Current	590 A
Light Duty Output Rating	630 kW
Normal Duty Output Rating	560 kW
Heavy Duty Output Rating	450 kW
Frame	Frame 9
Cooling	Forced Air
Enclosure Type	Type 1
IP Rating	IP20
Cabinet Style	MCC Style
Cabinet Depth	600 mm
Approx. Height	2,453 mm
Approx. Width	1,200 mm
Approx. Depth	600 mm
Approx. Weight (kg)	1,246 kg
Input Arrangement	AC Input with Precharge and DC Terminals
DC Bus Terminals	Included
Network Interface	Embedded EtherNet/IP
EMC Filter	Included
CM Jumper	Removed
Dynamic Braking Resistor	None
Dynamic Braking Transistor	None
HIM	Blank / No HIM
Mounting	MCC / Cabinet Installation
Motor Control	Variable-Speed AC Motor Control
Intended Load	Large Industrial Motor
Duty Modes	Light Duty / Normal Duty / Heavy Duty
Typical Applications	Pumps, fans, conveyors, compressors, process equipment
Installation Environment	Protected industrial electrical environment
Drive Architecture	High-Power PowerFlex 755
Main Control Purpose	Speed and torque control
Automation Integration	Industrial Ethernet communication
Service Requirement	Industrial maintenance and ventilation required

The physical dimensions and weight should be regarded as approximate equipment-selection values. Final cabinet drawings, shipping dimensions and lifting weight should be checked against the exact equipment configuration before transportation or installation planning.

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4. Product Model Number Explanation

The catalog number 20G11BF590AN0NNNNN contains information describing the basic configuration of the drive.

The 20G prefix identifies the PowerFlex 755 family.

The B enclosure designation is associated with the IP20 / Type 1, 600 mm deep MCC-style configuration.

The F identifies the 690 VAC voltage class.

The 590 portion corresponds to the approximately 590 A current class.

The A configuration identifies the filtering and common-mode capacitor arrangement used by this catalog number. In this configuration, the EMC filtering is provided while the common-mode jumper is removed.

The N dynamic-braking designation means that this configuration does not include an internal dynamic-braking resistor or internal dynamic-braking transistor.

The remaining N-coded positions indicate that the corresponding optional features are not selected in those catalog positions.

For engineering selection, it is important to treat the catalog number as a complete configuration. Changing only one character can change the enclosure, filtering, braking, voltage, current or other characteristics.

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5. Product Series

The 20G11BF590AN0NNNNN belongs to the:

Classification	Product
Brand	Allen-Bradley
Product Category	Industrial AC Drives
Product Family	PowerFlex
Series	PowerFlex 755
Model Class	High-Power AC Drive
Frame	Frame 9
Voltage Class	690 VAC
Current Class	590 A
Installation Style	MCC Style
Cooling	Air Cooled
Network	Embedded EtherNet/IP

The PowerFlex 755 series is intended for industrial applications where motor control, process coordination, diagnostics and automation-network integration are important.

Compared with compact drives designed for simple machine applications, the PowerFlex 755 architecture is better suited to larger motors and more sophisticated industrial systems.

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6. Product Introduction

The 20G11BF590AN0NNNNN is designed to control large three-phase AC motors by continuously adjusting the electrical output supplied to the motor.

Instead of allowing the motor to operate only at a fixed line frequency, the drive provides controlled frequency and voltage.

This allows motor speed to be adjusted according to the requirements of the production process.

For industrial equipment such as pumps and fans, this can be particularly useful because the process demand may change throughout the operating cycle.

For conveyors and material-handling machinery, variable-speed control can provide smoother starting and stopping.

For large process machines, the drive can provide coordinated speed control while communicating operating information to a central automation system.

The combination of 690 VAC input, 590 A output current and up to approximately 630 kW Light Duty power makes this model suitable for substantial industrial machinery.

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7. Electrical Performance

The most important electrical parameter is the 590 A output current rating.

This current capacity allows the drive to control a large three-phase AC motor.

The drive has three primary duty classifications:

Duty Classification	Approx. Power Rating	Typical Application
Light Duty	630 kW	Variable-torque or moderate-overload applications
Normal Duty	560 kW	General industrial process applications
Heavy Duty	450 kW	High-torque or demanding overload applications
Output Current	590 A	Maximum continuous current class

The difference between the three power ratings is important.

A motor should not be selected only according to the largest Light Duty rating.

If the application requires high starting torque, frequent acceleration, repeated overload or continuous operation under demanding mechanical conditions, the Heavy Duty rating may be the more appropriate reference.

For example, a machine with a nominal motor power close to 500 kW could potentially be suitable under one duty classification while exceeding the appropriate rating under another.

Motor current and application duty should therefore be evaluated together.

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8. Dimensions and Weight

The 20G11BF590AN0NNNNN is a Frame 9 MCC-style industrial drive rather than a compact wall-mounted inverter.

Its approximate physical dimensions are:

Height: 2,453 mm

Width: 1,200 mm

Depth: 600 mm

The approximate equipment weight is:

1,246 kg

Mechanical Parameter	Specification
Frame	Frame 9
Height	Approx. 2,453 mm
Width	Approx. 1,200 mm
Depth	Approx. 600 mm
Cabinet Depth	600 mm
Enclosure	IP20 / Type 1
Construction	MCC Style
Cooling	Forced Air
Approx. Weight (kg)	1,246 kg
Installation Type	Cabinet / MCC
Equipment Class	Large industrial electrical equipment

The weight is significant enough that transportation and installation should be planned as a dedicated engineering activity.

Suitable lifting equipment may be required.

The installation location should also be evaluated for floor loading, access width, cabinet service clearance and cable-entry requirements.

The stated dimensions should not be used as a replacement for the final mechanical drawing when designing the foundation or electrical-room layout.

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9. Cooling System

The drive uses an air-cooled / forced-air cooling system.

A drive in the 590 A class produces considerable heat during operation.

Therefore, the electrical room or cabinet installation must provide adequate ventilation.

The cooling system should have sufficient airflow and should not be obstructed by nearby equipment.

Dust accumulation can also affect the performance of cooling components over time.

For industrial installations, regular inspection of fans, air paths and cabinet cleanliness is important.

A suitable room temperature and ventilation arrangement should be maintained according to the installation requirements.

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10. Product Applications

10.1 Large Pump Systems

Large pumps are one of the most suitable applications for this drive.

A pump does not necessarily need to operate at full speed throughout the entire production cycle.

Variable-speed control allows the motor speed to follow the required flow or pressure.

Typical applications include:

• Industrial water circulation
• Cooling-water systems
• Process-water systems
• Water treatment
• Large pumping stations
• Industrial fluid transfer
• Cooling systems
• Process plants

For centrifugal pump applications, reducing speed can also provide significant energy benefits when the process permits lower flow operation.

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10.2 Large Fans and Blowers

Large industrial fans can require hundreds of kilowatts of motor power.

The drive can adjust fan speed according to airflow demand.

Potential applications include:

• Industrial ventilation
• Process exhaust
• Combustion air
• Cooling systems
• Dust extraction
• Furnace ventilation
• Large building ventilation
• Industrial air-handling systems

Variable-speed control can provide more precise process control than fixed-speed operation.

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10.3 Mining Conveyors

Mining conveyors often operate with large motors and substantial mechanical inertia.

Controlled acceleration can help reduce sudden mechanical stress.

The drive can provide controlled motor speed while communicating with the larger automation system.

Potential benefits include smoother starting, controlled stopping and better coordination with upstream and downstream material-handling equipment.

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10.4 Cement and Mineral Processing

Cement plants use many large motors.

Potential applications include:

• Process fans
• Large conveyors
• Mills
• Crushers
• Pumps
• Material-handling equipment
• Exhaust systems

The drive’s 690 VAC input and 590 A current capacity make it appropriate for substantial motor systems in this field.

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10.5 Steel and Metals Processing

Large metal-processing systems may use high-power motors for rollers, fans, pumps and material-handling machinery.

Variable-speed control can be used to coordinate motor operation with production requirements.

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10.6 Large Material-Handling Systems

Large conveyors, feeders and material-handling equipment can benefit from controlled acceleration and deceleration.

This can reduce mechanical shock and provide better control over material flow.

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10.7 Large Compressor Applications

Some compressor systems can use variable-speed motor control.

However, compressor selection must consider compressor type, torque requirements, operating speed range, acceleration requirements and process control.

The drive should therefore be selected based on the complete compressor duty rather than only the motor horsepower.

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11. Product Advantages

11.1 High Power Capacity

The first major advantage is the high power capacity.

The drive provides approximately:

630 kW Light Duty

560 kW Normal Duty

450 kW Heavy Duty

This places the product in a substantially higher power category than compact general-purpose drives.

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11.2 690 VAC Input

The 690 VAC voltage class is well suited to large industrial motors.

At high power levels, higher motor-system voltage can reduce current compared with an equivalent lower-voltage power system.

This can be beneficial for large industrial electrical distribution systems.

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11.3 590 A Current Rating

The 590 A current rating provides enough capacity for large industrial motors.

This makes the drive suitable for substantial process machinery rather than small standalone equipment.

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11.4 Embedded EtherNet/IP

Embedded EtherNet/IP is one of the major advantages for industrial automation.

The drive can communicate with a compatible controller and provide useful information such as:

• Speed reference
• Actual speed
• Drive status
• Motor current
• Warning status
• Fault status
• Diagnostic information
• Operating commands
• Parameter information

This reduces the need to treat the drive as an isolated motor-control device.

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11.5 Controlled Motor Starting

Large motors can draw significant current and produce substantial mechanical torque during startup.

A variable frequency drive can control the acceleration process.

This can help reduce mechanical shock and provide smoother machine startup.

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11.6 Variable-Speed Operation

The motor can operate at different speeds according to process requirements.

This is particularly valuable for pumps, fans and conveyors.

Instead of maintaining maximum speed continuously, the drive can respond to changing production requirements.

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11.7 Industrial-Scale Construction

The Frame 9 MCC-style configuration is designed for large industrial electrical installations.

This makes it more appropriate for centralized motor-control rooms and large industrial electrical systems than compact machine-mounted drives.

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11.8 Integrated Diagnostics

The networked drive can provide status and fault information to the control system.

This can make troubleshooting easier and reduce the amount of time required to identify operating problems.

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12. Filtering and EMC Characteristics

The specified 20G11BF590AN0NNNNN configuration includes an EMC filter.

The catalog configuration also specifies the common-mode capacitor jumper as removed.

This arrangement is relevant to the electrical installation because filtering and common-mode configuration can influence electromagnetic compatibility and grounding behavior.

The appropriate configuration should always be selected according to the motor, cable system, grounding arrangement and installation environment.

The filter configuration should not be changed casually after installation.

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13. Dynamic Braking

This model does not include an internal dynamic-braking resistor or internal dynamic-braking transistor.

This is important when selecting the drive for high-inertia machinery.

Some applications require rapid deceleration.

When the motor decelerates, energy can flow back toward the drive’s DC bus.

If the application produces substantial regenerative energy, the braking solution must be evaluated separately.

Potential solutions may involve an external braking arrangement or a different system architecture depending on the actual application.

For machines that naturally decelerate slowly, internal dynamic braking may not be required.

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14. Automation and Control Applications

The embedded communication capability makes the drive suitable for automated production systems.

A typical control architecture may include a central controller, operator interface, industrial network and multiple motor drives.

The drive can receive commands from the control system while transmitting operating information back to the controller.

Information	Typical Purpose
Start / Stop	Motor operation
Speed Reference	Process-speed control
Actual Speed	Process monitoring
Output Current	Load monitoring
Drive Status	Operating-state confirmation
Warning	Early fault indication
Fault	Failure detection
Diagnostic Data	Troubleshooting
Parameter Data	Configuration and monitoring
Network Status	Communication monitoring

This type of integration is useful for large plants where many motors need to be controlled from a central automation system.

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15. Energy-Saving Potential

Variable-speed control can provide energy-saving opportunities when the mechanical load does not require full speed continuously.

This is especially relevant for centrifugal pumps and fans.

For example, if a pump only needs reduced flow for part of the production cycle, reducing motor speed can be more efficient than continuously running the motor at full speed and restricting flow through a valve.

Similarly, a fan can operate at reduced speed when the required airflow is lower.

The actual energy savings depend on the complete system.

Important factors include:

• Motor efficiency
• Load characteristics
• Operating hours
• Required flow
• Required pressure
• Process schedule
• Mechanical transmission efficiency
• Drive efficiency

Therefore, the drive provides the capability for energy optimization, but the actual energy benefit depends on how the process uses the motor.

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16. Mechanical Advantages

Large mechanical systems can benefit significantly from controlled acceleration.

A conveyor containing a long belt and heavy material load can have considerable mechanical inertia.

Starting the motor too aggressively can place high stress on:

• Gearboxes
• Couplings
• Shafts
• Bearings
• Conveyor belts
• Rollers
• Mechanical brakes

Variable-frequency control provides a way to manage the acceleration profile.

This can produce smoother machine operation and potentially reduce mechanical shock.

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17. Installation Considerations

The physical size of the drive means that installation should be planned before the equipment arrives.

The approximate dimensions are:

Installation Parameter	Approximate Value
Height	2,453 mm
Width	1,200 mm
Depth	600 mm
Weight	1,246 kg
Cabinet Type	IP20 / Type 1
Installation Style	MCC
Cooling	Forced Air

The electrical room must have enough clearance for installation and maintenance.

Cable routing is also important.

Large power cables require adequate bending radius and termination space.

The room must also provide sufficient ventilation for heat generated by the drive.

Because the approximate equipment weight exceeds one metric ton, transportation routes should be checked for:

• Door dimensions
• Floor loading
• Turning radius
• Lifting height
• Crane access
• Forklift capacity
• Equipment handling clearance

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18. Maintenance Considerations

Regular inspection is important for a high-power drive.

Cooling fans should be checked for abnormal noise, vibration or reduced airflow.

The ventilation path should be kept clean.

Electrical connections should be inspected according to the applicable maintenance procedure.

The cabinet should be protected from excessive dust, moisture and conductive contamination.

Network communication should also be checked when the drive forms part of a centralized automation system.

Fault history can provide useful information when diagnosing intermittent problems.

Maintenance intervals should be adjusted according to the actual operating environment.

A clean, cool electrical room generally provides better operating conditions than a hot or heavily contaminated environment.

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19. Five Recommended Models from the Same Series or Closely Related Models

The following models are useful comparison candidates within the PowerFlex 755 high-power family.

Model	Series	Voltage	Current	Light Duty	Normal Duty	Heavy Duty	Dimensions	Weight (kg)
20G11BF590AN0NNNNN	PowerFlex 755	690 VAC	590 A	630 kW	560 kW	450 kW	Approx. 2453 × 1200 × 600 mm	Approx. 1,246
20G11BF590JN0NNNNN	PowerFlex 755	690 VAC	590 A	630 kW	560 kW	450 kW	Approx. 2453 × 1200 × 600 mm	Approx. 1,246
20G11BF650AN0NNNNN	PowerFlex 755	690 VAC	650 A	710 kW	630 kW	500 kW	Frame 9, 600 mm cabinet class	Approx. 1,246+
20G11BF710AN0NNNNN	PowerFlex 755	690 VAC	710 A	800 kW	710 kW	590 kW	Frame 9, 600 mm cabinet class	Approx. 1,246+
20G11BF1K0AN0NNNNN	PowerFlex 755	690 VAC	1,040 A	1,100 kW	1,000 kW	900 kW	Frame 10, 600 mm cabinet class	Approx. 1,869+
20G11BF1K4AN0NNNNN	PowerFlex 755	690 VAC	1,400 A	1,500 kW	1,400 kW	1,120 kW	Frame 10, 600 mm cabinet class	Approx. 1,869+

The 20G11BF590JN0NNNNN is especially relevant as a same-rating alternative because it maintains the same 590 A, 690 VAC electrical class while changing the filtering/common-mode configuration.

The 20G11BF650AN0NNNNN and 20G11BF710AN0NNNNN are useful when the motor power requirement is higher than the 590 A model but remains within the Frame 9 range.

The 20G11BF1K0AN0NNNNN and 20G11BF1K4AN0NNNNN are suitable comparison models when the required motor power moves into the approximately 1 MW and 1.4 MW range.

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20. Same-Series Comparison

Model	Voltage	Current	LD	ND	HD	Frame	Main Difference
20G11BF590AN0NNNNN	690 VAC	590 A	630 kW	560 kW	450 kW	9	Reference model
20G11BF590JN0NNNNN	690 VAC	590 A	630 kW	560 kW	450 kW	9	Different CM/filter configuration
20G11BF650AN0NNNNN	690 VAC	650 A	710 kW	630 kW	500 kW	9	Higher current
20G11BF710AN0NNNNN	690 VAC	710 A	800 kW	710 kW	590 kW	9	Higher power
20G11BF1K0AN0NNNNN	690 VAC	1,040 A	1,100 kW	1,000 kW	900 kW	10	Megawatt-class Frame 10
20G11BF1K4AN0NNNNN	690 VAC	1,400 A	1,500 kW	1,400 kW	1,120 kW	10	Very high-power configuration

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21. Five Popular Models from the Same Brand

The following models represent useful products from the same brand across different drive categories and power levels.

Model	Product Family	Voltage Class	Current / Power	Application	Construction	Approx. Dimensions	Weight (kg)
20G11BF590AN0NNNNN	PowerFlex 755	690 VAC	590 A / 560 kW ND	Large industrial machinery	Frame 9 MCC	Approx. 2453 × 1200 × 600 mm	Approx. 1,246
20G11BF650AN0NNNNN	PowerFlex 755	690 VAC	650 A / 630 kW ND	Large pumps, fans and conveyors	Frame 9 MCC	Approx. 2453 × 1200 × 600 mm class	Approx. 1,246+
20G11BF1K0AN0NNNNN	PowerFlex 755	690 VAC	1,040 A / 1,000 kW ND	Megawatt-class machinery	Frame 10 MCC	Approx. 2453 × 1800 × 600 mm class	Approx. 1,869+
25B-D017N104	PowerFlex 525	480 VAC class	Small / medium power	General machinery	Compact	Model-dependent	Model-dependent
1756-EN2T	ControlLogix	24 VDC system	Ethernet communication module	Industrial automation networking	Chassis module	Compact chassis module	Model-dependent

The final model is a communication module rather than an AC drive, but it is a widely used component in industrial automation architectures and can be relevant when designing a complete control system around high-power drives.

The PowerFlex 525 models are considerably smaller than the 20G11BF590AN0NNNNN and are not direct replacements.

They become relevant when the motor power requirement is substantially lower.

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22. Application Selection Table

Application	Recommended Model Direction	Reason
400–450 kW Heavy Duty motor	20G11BF590AN0NNNNN	450 kW HD capability
500–560 kW Normal Duty motor	20G11BF590AN0NNNNN	560 kW ND capability
Around 630 kW Light Duty motor	20G11BF590AN0NNNNN	630 kW LD capability
Around 630 kW Normal Duty motor	20G11BF650AN0NNNNN	Higher current and 630 kW ND
Around 710 kW Normal Duty motor	20G11BF710AN0NNNNN	710 kW ND capability
Around 1 MW Normal Duty motor	20G11BF1K0AN0NNNNN	1,000 kW ND capability
Around 1.4 MW Normal Duty motor	20G11BF1K4AN0NNNNN	1,400 kW ND capability
Small industrial motor	PowerFlex 525 family	More compact and appropriately sized
Medium industrial motor	PowerFlex 753 family	More suitable intermediate power range

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23. Why 20G11BF590AN0NNNNN Is Suitable for Large Industrial Systems

The model’s combination of 590 A current capacity and 690 VAC operation gives it a strong position for large industrial motor systems.

It is large enough to control motors in the several-hundred-kilowatt range while remaining within the Frame 9 PowerFlex 755 architecture.

The MCC-style construction also allows the equipment to be installed as part of a centralized electrical system.

This is useful in industrial facilities where multiple motor drives are grouped into electrical rooms or motor-control areas.

The embedded network capability further supports integration into plant automation.

For example, a central controller can provide a speed reference to the drive while receiving actual speed, motor current, status and fault information.

This creates a more coordinated control environment.

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24. Product Advantages Compared with Fixed-Speed Motor Operation

A conventional fixed-speed motor system generally operates at the frequency of the incoming electrical supply.

The 20G11BF590AN0NNNNN allows motor speed to be controlled.

This can provide several practical benefits.

The first is process flexibility.

The motor can operate at the speed required by the process rather than being restricted to one fixed speed.

The second is controlled starting.

The motor can accelerate progressively rather than applying the full mechanical load immediately.

The third is controlled stopping.

The machine can use a defined deceleration profile.

The fourth is automation integration.

The drive can receive commands and send operating information through the industrial network.

The fifth is potential energy optimization in variable-load applications.

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25. Product Advantages Compared with Smaller Drives

For a 560 kW-class industrial motor, using multiple small drives is generally not the same as using a properly sized high-power drive.

A large industrial drive provides a power section designed specifically for the required current level.

The Frame 9 architecture also provides an installation format appropriate for centralized industrial electrical systems.

This can simplify the overall architecture when a single large motor needs to be controlled.

However, the final selection should always consider redundancy requirements.

For a critical production process, two smaller motors and drives may sometimes be preferable to one very large motor and one very large drive.

The appropriate solution depends on process design.

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26. Important Selection Factors

When selecting the 20G11BF590AN0NNNNN, the following parameters should be checked carefully:

Selection Factor	What to Check
Motor Voltage	Confirm compatibility with 690 VAC system
Motor Current	Confirm current is within selected duty rating
Motor Power	Compare against LD, ND and HD ratings
Overload	Check actual overload requirements
Acceleration	Check acceleration time and load inertia
Deceleration	Check regenerative energy
Braking	Determine whether external braking is necessary
Enclosure	Confirm IP20 / Type 1 is suitable
Installation	Confirm MCC-style cabinet space
Cooling	Confirm sufficient airflow
Network	Confirm EtherNet/IP requirements
EMC	Confirm filtering requirements
Cable Length	Check motor-cable characteristics
Motor Type	Confirm motor compatibility
Ambient Conditions	Check temperature, humidity and contamination
Weight	Allow for approximately 1,246 kg
Dimensions	Allow approximately 2453 × 1200 × 600 mm
Maintenance	Provide sufficient service access

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27. Recommended Engineering Approach

For a new installation, the first step should be to identify the motor nameplate information.

Important motor data includes:

• Rated voltage
• Rated current
• Rated power
• Rated frequency
• Rated speed
• Power factor
• Efficiency
• Motor type
• Starting requirements
• Overload requirements

The second step is to identify the mechanical load.

The load may be:

• Constant torque
• Variable torque
• High inertia
• High starting torque
• Regenerative
• Rapid acceleration
• Rapid deceleration

The third step is to select the appropriate duty rating.

The fourth step is to verify the electrical installation.

The fifth step is to verify mechanical dimensions and weight.

The sixth step is to verify the control-network architecture.

This approach is more reliable than selecting a drive only by matching motor horsepower.

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28. Product Advantages Summary

Advantage	Practical Benefit
690 VAC	Suitable for large industrial motor systems
590 A	High-current motor control
630 kW LD	Supports large variable-speed loads
560 kW ND	Strong general industrial capability
450 kW HD	Suitable for demanding motor loads
Frame 9	Industrial high-power construction
MCC Style	Suitable for centralized electrical installations
IP20 / Type 1	Appropriate for protected electrical rooms
Forced Air Cooling	Suitable for high-power heat dissipation
Embedded EtherNet/IP	Automation-system integration
EMC Filter	Supports electrical-noise management
Variable Speed	Flexible process operation
Controlled Acceleration	Reduced mechanical starting shock
Diagnostic Capability	Easier system monitoring and troubleshooting

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29. Overall Technical Assessment

The 20G11BF590AN0NNNNN is a substantial industrial AC drive designed for large three-phase motors.

Its 690 VAC voltage class makes it particularly suitable for large industrial electrical systems.

Its 590 A output current rating supports motors in the several-hundred-kilowatt range.

The 630 kW Light Duty, 560 kW Normal Duty and 450 kW Heavy Duty ratings provide different selection points depending on the application’s mechanical and overload requirements.

The Frame 9 architecture provides a large industrial installation format.

The 600 mm deep MCC-style construction is appropriate for centralized electrical rooms and industrial motor-control installations.

The approximately 2,453 mm × 1,200 mm × 600 mm dimensions and approximately 1,246 kg weight demonstrate that this is major electrical equipment rather than a compact machine-level inverter.

The embedded EtherNet/IP capability is another important characteristic because it enables the drive to participate in an integrated industrial automation system.

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30. Final Product Parameter Table

Category	Detailed Specification
Model	20G11BF590AN0NNNNN
Brand	Allen-Bradley
Series	PowerFlex 755
Product Type	Air-Cooled AC Variable Frequency Drive
Application	Large Industrial Motor Control
Input Voltage	690 VAC
Phase	Three Phase
Rated Current	590 A
Light Duty	630 kW
Normal Duty	560 kW
Heavy Duty	450 kW
Frame	Frame 9
Enclosure	IP20 / Type 1
Cabinet Style	MCC Style
Height	Approx. 2,453 mm
Width	Approx. 1,200 mm
Depth	Approx. 600 mm
Weight (kg)	Approx. 1,246 kg
Cooling	Forced Air
Input Configuration	AC Input with Precharge and DC Terminals
Communication	Embedded EtherNet/IP
Filtering	EMC Filter
CM Jumper	Removed
Dynamic Braking	None
HIM	Blank / No HIM
Motor Type	Three-Phase AC Motor
Main Applications	Pumps, fans, conveyors, mining, cement, metals, compressors and process machinery
Main Advantage	High-power variable-speed control with industrial automation integration

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31. Conclusion

The 20G11BF590AN0NNNNN is a high-capacity PowerFlex 755 AC variable frequency drive intended for large industrial motor applications.

Its main electrical characteristics are 690 VAC, three-phase input, 590 A output current, 630 kW Light Duty, 560 kW Normal Duty and 450 kW Heavy Duty.

Its Frame 9 construction and MCC-style cabinet make it suitable for centralized industrial electrical installations.

The approximate physical dimensions of 2,453 mm × 1,200 mm × 600 mm and approximate weight of 1,246 kg should be considered when planning transportation, lifting, cabinet installation, floor loading, ventilation and maintenance access.

The product is especially well suited to large pumps, fans, conveyors, mining equipment, cement machinery, material-handling equipment, large process machinery and selected compressor applications.

Its major strengths are the 690 VAC voltage class, 590 A current capacity, high power rating, controlled motor operation, embedded EtherNet/IP communication, industrial-scale construction and suitability for integration into automated production systems.

For an application around 560 kW Normal Duty, this model provides a strong fit within the PowerFlex 755 family.

When higher motor power is required, the 20G11BF650AN0NNNNN, 20G11BF710AN0NNNNN, 20G11BF1K0AN0NNNNN and 20G11BF1K4AN0NNNNN provide useful higher-capacity comparison points.

When the application is much smaller, a compact drive family is generally more appropriate because the Frame 9 PowerFlex 755 is physically large and electrically oversized for small motors.

The most important point when selecting this model is to evaluate the complete application rather than relying on the motor’s nominal kW alone. Motor current, duty classification, overload requirements, acceleration and deceleration characteristics, braking requirements, enclosure conditions, cooling, communication and physical installation requirements should all be considered together.

Overall, the 20G11BF590AN0NNNNN can be described as a 690 VAC, 590 A, 630 kW Light Duty / 560 kW Normal Duty / 450 kW Heavy Duty, Frame 9, air-cooled PowerFlex 755 industrial AC drive designed for large-scale variable-speed motor control and automated industrial process applications.