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20G11BF590JN2NNNNN PowerFlex 755 AC Drive — Detailed Product Information, Technical Parameters, Applications, Advantages and Model Recommendations

1. Product Overview

The 20G11BF590JN2NNNNN is a high-power industrial AC variable frequency drive designed for large three-phase motor applications. It belongs to the PowerFlex 755 series and is positioned in the high-capacity section of the PowerFlex product range.

The drive is configured for a 690 VAC three-phase power supply and has a 590 A output-current rating. Its power capability is approximately 630 kW for Light Duty, 560 kW for Normal Duty and 450 kW for Heavy Duty.

This configuration uses a Frame 9 power section and a 600 mm deep MCC-style enclosure. It is an air-cooled drive with forced-air cooling and an IP20 / NEMA Type 1 enclosure arrangement.

A major feature of this particular catalog number is the JN2 configuration. Compared with the JN0 version, the JN2 configuration is equipped with a handheld/local HIM arrangement, providing a practical local interface for commissioning, monitoring, parameter adjustment and troubleshooting.

The drive also provides embedded EtherNet/IP communication, allowing it to communicate with an industrial control system. This makes it suitable for applications where a large motor must be integrated into a larger automated production or process-control system.

The model uses an AC input with precharge and DC terminals, includes the specified filtering arrangement and has the common-mode jumper installed. The configuration does not include an internal dynamic-braking option.

Overall, the 20G11BF590JN2NNNNN is a large industrial motor-control product intended for demanding applications such as large pumps, fans, conveyors, compressors, mining equipment, cement machinery, material-handling systems and other high-power process equipment.

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2. Product Basic Information

Item	Specification
Product Model	20G11BF590JN2NNNNN
Brand	Allen-Bradley
Product Family	PowerFlex
Product Series	PowerFlex 755
Product Type	High-Power AC Variable Frequency Drive
Drive Configuration	Air-Cooled PowerFlex 755
Input Voltage	690 VAC
Input Phase	Three Phase
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 Method	Forced Air / Air Cooled
Enclosure	IP20 / NEMA Type 1
Cabinet 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	Filtered
Common-Mode Jumper	Installed
Dynamic Braking	None
Local Interface	Handheld / Local HIM
HIM Configuration	Enhanced LCD / Full Numeric
Motor Type	Three-Phase AC Motor
Installation	Industrial Cabinet / MCC
Application Level	Large Industrial Motor Control
Typical Power Range	Several Hundred Kilowatts
Main Function	Variable-Speed AC Motor Control

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3. Detailed Technical Parameters

Parameter	Detailed Specification
Catalog Number	20G11BF590JN2NNNNN
Brand	Allen-Bradley
Product Series	PowerFlex 755
Drive Type	AC Variable Frequency Drive
Voltage Class	690 VAC
Input Voltage	690 VAC
Input Phase	3 Phase
Line Frequency	50/60 Hz system dependent
Rated Output Current	590 A
Light Duty Power	630 kW
Normal Duty Power	560 kW
Heavy Duty Power	450 kW
Frame	Frame 9
Cooling	Forced Air
Enclosure Rating	IP20
NEMA / UL Enclosure	Type 1
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
DC Terminals	Included
Communication	Embedded EtherNet/IP
EMC Filtering	Included
Common-Mode Jumper	Installed
Dynamic Braking	None
HIM	Handheld / Local HIM
HIM Display	Enhanced LCD / Full Numeric
Motor Control	Variable-Speed AC Motor Control
Mounting	MCC / Cabinet
Duty Classifications	LD / ND / HD
Primary Application	Large Industrial AC Motors
Cooling Requirement	Adequate Forced-Air Ventilation
Installation Environment	Protected Industrial Electrical Area
Main Control Functions	Speed, torque and process control
Network Functions	Command, monitoring and diagnostics

The dimensions and weight above should be regarded as approximate equipment-selection information. For transportation, lifting, structural calculations and final cabinet layout, the exact mechanical drawing for the ordered configuration should always be used.

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4. Understanding the Model Number

The catalog number 20G11BF590JN2NNNNN is made up of several configuration elements.

The 20G designation identifies the PowerFlex 755 drive family.

The following characters define the particular electrical and mechanical configuration.

The B configuration corresponds to the large IP20 / NEMA Type 1, 600 mm deep MCC-style construction.

The F designation corresponds to the 690 VAC voltage class.

The 590 designation identifies the approximately 590 A current class.

The J configuration identifies the factory filtering and common-mode configuration used for this version.

The N section indicates that the drive does not include the internal dynamic-braking option in this catalog configuration.

The 2 section is particularly important because it identifies the handheld/local HIM configuration.

The HIM provides a local interface that can be used during commissioning and maintenance.

The final N-coded positions indicate that no additional options are selected in those catalog positions.

For purchasing and replacement purposes, the complete catalog number should be treated as a single configuration. A model with the same current and voltage but a different HIM, enclosure, filtering or braking option should not automatically be considered electrically or mechanically identical.

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5. Brand and Product Series

Classification	Information
Brand	Allen-Bradley
Product Family	PowerFlex
Series	PowerFlex 755
Product Category	Industrial AC Drives
Drive Type	Variable Frequency AC Drive
Power Class	High Power
Frame	Frame 9
Voltage Class	690 VAC
Current Class	590 A
Cooling	Air Cooled
Enclosure	IP20 / NEMA Type 1
Installation	MCC Style
Communication	Embedded EtherNet/IP
Local Interface	Handheld / Local HIM

The PowerFlex 755 series is intended for applications that need more than basic motor starting and stopping.

It is designed for variable-speed motor control, process coordination, network communication, monitoring and advanced industrial automation.

The 20G11BF590JN2NNNNN represents a large-frame configuration within this family.

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6. Product Introduction

The 20G11BF590JN2NNNNN is designed to control the speed and torque of a large three-phase AC motor.

The basic operating principle of a variable frequency drive is to regulate the electrical output delivered to the motor. By controlling frequency and voltage, the drive can change motor operating speed according to the requirements of the machine.

This is particularly useful when the process does not need the motor to operate continuously at full speed.

For example, a large pump may need lower speed during periods of reduced flow demand.

A large fan may need different speeds depending on ventilation requirements.

A conveyor may need to accelerate gradually and operate at different speeds according to material throughput.

A process machine may require accurate coordination between several motors.

In all of these situations, variable-speed control can provide greater flexibility than fixed-speed motor operation.

The 20G11BF590JN2NNNNN is designed for applications where the motor power is substantial enough to justify a large Frame 9 industrial drive.

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7. Electrical Rating

The drive has a rated output current of approximately 590 A.

Its power ratings are divided into three duty classifications.

Duty Classification	Approximate Power Rating	Application Characteristics
Light Duty	630 kW	Moderate overload / variable-torque applications
Normal Duty	560 kW	General industrial motor applications
Heavy Duty	450 kW	Higher overload and torque requirements
Rated Current	590 A	Main current class

The three power ratings should not be interpreted as three completely separate drive sizes.

They represent the available capacity under different application-duty conditions.

For a pump or fan with a relatively smooth variable-torque load, the Light Duty rating may be applicable.

For a general industrial machine, the Normal Duty rating may be the appropriate reference.

For high-torque equipment, repeated acceleration or demanding overload conditions, the Heavy Duty rating should be evaluated.

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8. Dimensions and Weight

The 20G11BF590JN2NNNNN is a large MCC-style drive.

Its approximate dimensions are:

2,453 mm high × 1,200 mm wide × 600 mm deep

The approximate weight is:

1,246 kg

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

The weight is significant and should be considered during transportation and installation.

The installation area should be checked for floor loading capacity.

The route from the receiving area to the final installation position should also be evaluated.

Door openings, turning space, lifting height and handling equipment capacity can all become important considerations.

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9. Local HIM Configuration

One of the main differences between 20G11BF590JN2NNNNN and similar JN0 configurations is the local operator interface.

The JN2 configuration provides a handheld/local HIM arrangement.

The local interface can be useful during:

• Initial commissioning
• Motor setup
• Parameter configuration
• Manual testing
• Troubleshooting
• Fault investigation
• Local speed/reference adjustment
• Maintenance

A local interface is particularly valuable during commissioning because technicians do not always want to depend entirely on the plant control network.

The display can provide operating information and configuration access directly at the drive.

This can make maintenance work more convenient when the automation controller is unavailable or when a technician needs to inspect the drive locally.

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10. Embedded EtherNet/IP Communication

The drive includes embedded EtherNet/IP communication.

This provides a direct way to integrate the drive into an industrial automation network.

Typical information that can be exchanged includes:

Information	Purpose
Start Command	Start motor
Stop Command	Stop motor
Speed Reference	Set motor speed
Actual Speed	Monitor motor speed
Motor Current	Monitor load
Drive Status	Determine operating state
Warning	Identify abnormal conditions
Fault	Identify drive fault
Fault Code	Troubleshooting
Parameter Data	Configuration and monitoring
Control Word	Automated drive control
Status Word	Drive status feedback

For a large industrial installation, this network capability can significantly simplify the integration of the motor drive with the overall automation system.

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11. Main Product Applications

11.1 Large Pumping Systems

Large pumps are an important application for this drive.

Industrial pumping systems frequently experience changing demand.

Instead of operating the motor at full speed continuously, the drive can adjust motor speed according to process requirements.

Potential applications include:

• Industrial water circulation
• Cooling-water systems
• Process water
• Wastewater systems
• Large water-transfer systems
• Industrial fluid circulation
• Chemical process pumping
• Cooling towers
• Large pumping stations

Variable-speed control can also provide smoother acceleration and stopping.

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11.2 Large Industrial Fans

Large fans and blowers can require hundreds of kilowatts of motor power.

The drive can adjust fan speed according to airflow demand.

Potential applications include:

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

Variable-speed control can be especially useful when airflow demand changes throughout the production process.

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11.3 Mining Conveyors

Large conveyors are demanding applications because of their high inertia and mechanical loading.

The drive can provide controlled acceleration.

This can help reduce mechanical shock during startup.

Potential equipment includes:

• Long belt conveyors
• Ore conveyors
• Material feeders
• Transfer conveyors
• Bulk material systems
• Crushing plant conveyors

The drive can also communicate with the larger automation system, allowing conveyor speed to be coordinated with other equipment.

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11.4 Cement and Mineral Processing

Cement and mineral-processing facilities often use large motors.

Potential applications include:

• Process fans
• Conveyors
• Mills
• Material-handling systems
• Large pumps
• Exhaust systems
• Feed systems
• Auxiliary machinery

The 690 VAC electrical class is appropriate for large motor systems used in these environments.

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11.5 Steel and Metals Processing

Large steel and metal-processing equipment may use variable-speed motors for:

• Rollers
• Pumps
• Fans
• Material handling
• Cooling systems
• Process machinery

The drive can be integrated into the production-control system to coordinate motor speed with the production line.

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11.6 Large Material-Handling Equipment

Large material-handling machines can benefit from controlled acceleration and speed regulation.

This includes:

• Bulk-material conveyors
• Feeders
• Elevators
• Transfer systems
• Large process conveyors

Controlled acceleration can reduce mechanical stress on gearboxes, belts, couplings and shafts.

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11.7 Compressor Systems

Large compressors can also be considered for variable-speed drive applications.

However, compressor selection requires careful evaluation of:

• Starting torque
• Speed range
• Compressor type
• Acceleration time
• Operating pressure
• Load profile
• Regenerative behavior

The motor current and duty classification should be verified before selecting the drive.

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12. Product Advantages

12.1 High Current Capability

The 590 A rating is one of the primary advantages of the product.

It allows the drive to control large industrial motors without using a much smaller drive that would be electrically undersized.

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12.2 High Power Capacity

The drive supports approximately:

• 630 kW Light Duty
• 560 kW Normal Duty
• 450 kW Heavy Duty

This places it firmly in the large industrial motor-control category.

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12.3 690 VAC Operation

The 690 VAC class is well suited to high-power motor systems.

At large power levels, using a higher voltage can reduce the current required for a given power compared with lower-voltage systems.

This can influence conductor sizing and the overall design of the motor power-distribution system.

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12.4 Handheld / Local HIM

The JN2 configuration has an important practical advantage over a basic no-HIM configuration.

The local HIM provides a convenient interface for technicians.

It can be useful for:

• Commissioning
• Parameter setup
• Local testing
• Fault diagnosis
• Maintenance
• Status monitoring

This can save time during startup and troubleshooting.

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12.5 Embedded EtherNet/IP

The integrated network interface allows the drive to communicate with the automation system.

This makes it possible to monitor the motor and drive without relying exclusively on local controls.

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12.6 Controlled Acceleration

Large industrial motors can create substantial mechanical stress when started abruptly.

The variable frequency drive can control acceleration.

This can result in smoother startup behavior and reduce sudden loading of mechanical components.

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12.7 Variable-Speed Control

The drive can adjust motor speed according to process requirements.

This is particularly useful for variable-flow pumps and fans.

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12.8 Industrial MCC Construction

The large MCC-style construction is intended for centralized industrial electrical installations.

It is suitable for environments where large motor drives are installed in dedicated electrical rooms or motor-control areas.

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12.9 Integrated Monitoring and Diagnostics

The combination of local HIM and network communication provides two useful methods of accessing drive information.

A technician can work locally through the HIM.

The control system can monitor the drive remotely through the industrial network.

This combination is particularly useful for large plants.

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13. Filtering and Common-Mode Configuration

The 20G11BF590JN2NNNNN uses the filtered configuration and has the common-mode jumper installed.

This configuration can be important in installations where electromagnetic compatibility and common-mode electrical behavior need to be considered.

Filtering can help manage high-frequency electrical noise associated with variable frequency drive operation.

The common-mode configuration is also relevant to the interaction between the drive, motor cable, motor and grounding system.

For large industrial systems, cable length, grounding method, motor construction and installation layout should all be considered together.

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14. Dynamic Braking

The specified configuration does not include an internal dynamic-braking option.

This does not mean that the drive cannot be used with loads that decelerate.

It means that the catalog configuration does not provide the internal dynamic-braking hardware as part of the standard drive configuration.

If a machine needs rapid stopping, the application should be evaluated for regenerative energy.

This is particularly important for:

• High-inertia fans
• Large conveyors
• Centrifuges
• Hoists
• Large rotating machinery
• Rapid-stop process equipment

If the DC bus receives significant regenerated energy during deceleration, an appropriate braking or regeneration solution may be required.

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15. Cooling and Thermal Management

The drive is air cooled and relies on forced airflow to remove heat.

For a 590 A high-power drive, thermal management is an important part of system design.

The electrical room or cabinet should provide sufficient airflow.

The air path should remain unobstructed.

The installation should avoid excessive dust accumulation.

The cooling system should also be maintained according to the actual operating conditions.

A hot electrical room can place additional thermal stress on power electronics.

Therefore, ventilation and ambient-temperature management should be treated as part of the drive installation rather than as an afterthought.

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16. Energy-Saving Applications

Variable-speed drives can provide significant energy-saving opportunities in the right applications.

The most favorable applications are generally variable-torque loads.

For example, centrifugal pumps and fans often follow a load relationship where a reduction in speed can produce a much larger reduction in required power.

A fixed-speed system may continue running the motor at full speed and regulate the process mechanically.

A variable-speed system can instead reduce motor speed to match the actual demand.

The actual energy savings depend on:

Factor	Importance
Motor Efficiency	Determines electrical input efficiency
Load Type	Variable torque can provide strong savings potential
Operating Hours	Longer operation increases savings opportunity
Speed Range	Greater usable speed reduction can increase savings
Process Demand	Determines how often reduced speed is possible
Mechanical Efficiency	Affects total system efficiency
Drive Efficiency	Affects electrical losses

The drive should therefore be considered an enabling technology for energy optimization rather than an automatic guarantee of energy savings.

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17. Mechanical Benefits

Large motors can generate significant mechanical torque.

A controlled acceleration profile can reduce the shock applied to the machine.

Potentially affected components include:

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

For a large conveyor, for example, gradual acceleration can help bring the belt and material load up to speed progressively.

For a pump, controlled acceleration can help reduce sudden hydraulic transients.

For a fan, controlled acceleration can help reduce sudden mechanical loading.

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18. Installation Requirements

The approximate physical envelope is:

Installation Parameter	Approximate Value
Height	2,453 mm
Width	1,200 mm
Depth	600 mm
Weight (kg)	1,246 kg
Frame	Frame 9
Enclosure	IP20 / NEMA Type 1
Cabinet Style	MCC
Cooling	Forced Air

Because the equipment weighs more than one metric ton, the installation should include a proper transportation and lifting plan.

The following items should be checked before installation:

• Access doors
• Floor loading
• Lifting equipment
• Forklift capacity
• Crane access
• Cabinet positioning
• Cable-entry space
• Maintenance clearance
• Ventilation
• Ambient temperature

The stated dimensions are suitable for preliminary planning, but the final installation should use the mechanical documentation associated with the exact configuration.

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19. Maintenance

Maintenance of a high-power drive should focus on cooling, electrical connections, environmental conditions and diagnostic information.

Cooling fans should be inspected regularly.

Air passages should remain clean.

The cabinet should be kept free from excessive dust and conductive contamination.

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

The local HIM can be particularly useful for maintenance personnel because it provides direct access to drive status and configuration information.

The network connection also allows the control system to monitor drive status remotely.

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20. Five Recommended Models from the Same Series or Closely Related Configurations

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

Model	Series	Voltage	Current	LD Rating	ND Rating	HD Rating	Dimensions	Weight (kg)
20G11BF590JN2NNNNN	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
20G11BF590JN4NNNNN	PowerFlex 755	690 VAC	590 A	630 kW	560 kW	450 kW	Approx. 2453 × 1200 × 600 mm class	Approx. 1,246+
20G11BF650JN2NNNNN	PowerFlex 755	690 VAC	650 A	710 kW	630 kW	500 kW	Frame 9, 600 mm MCC class	Approx. 1,250+
20G11BF710JN2NNNNN	PowerFlex 755	690 VAC	710 A	800 kW	710 kW	590 kW	Frame 9, 600 mm MCC class	Approx. 1,250+
20G11BF765JN2NNNNN	PowerFlex 755	690 VAC	765 A	850 kW	750 kW	630 kW	Frame 9, 600 mm MCC class	Approx. 1,250+

These models are related because they use the same PowerFlex 755 architecture and similar 690 VAC high-power configurations.

The 20G11BF590JN0NNNNN is particularly close electrically. Its principal difference is the local interface configuration.

The 20G11BF590JN4NNNNN is another 590 A configuration with a different local-interface arrangement.

The 20G11BF650JN2NNNNN, 20G11BF710JN2NNNNN and 20G11BF765JN2NNNNN provide progressively greater current and power capability.

The weight values for related configurations are approximate because exact mechanical weight can vary according to the final cabinet arrangement and installed options.

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21. Five Related Model Comparison

Model	Rated Voltage	Rated Current	Light Duty	Normal Duty	Heavy Duty	Frame	Local Interface	Weight (kg)
20G11BF590JN2NNNNN	690 VAC	590 A	630 kW	560 kW	450 kW	9	Handheld / Local HIM	Approx. 1,246
20G11BF590JN0NNNNN	690 VAC	590 A	630 kW	560 kW	450 kW	9	No local HIM configuration	Approx. 1,246
20G11BF590JN4NNNNN	690 VAC	590 A	630 kW	560 kW	450 kW	9	Door-mounted HIM configuration	Approx. 1,246+
20G11BF650JN2NNNNN	690 VAC	650 A	710 kW	630 kW	500 kW	9	Handheld / Local HIM	Approx. 1,250+
20G11BF710JN2NNNNN	690 VAC	710 A	800 kW	710 kW	590 kW	9	Handheld / Local HIM	Approx. 1,250+
20G11BF765JN2NNNNN	690 VAC	765 A	850 kW	750 kW	630 kW	9	Handheld / Local HIM	Approx. 1,250+

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22. Five Popular Models from the Same Brand

The following models provide a broader selection of products from the same brand, covering different power levels and product categories.

Model	Product Family	Voltage Class	Current / Power Class	Main Application	Construction	Approx. Dimensions	Weight (kg)
20G11BF590JN2NNNNN	PowerFlex 755	690 VAC	590 A / 560 kW ND	Large industrial machinery	Frame 9 MCC	Approx. 2453 × 1200 × 600 mm	Approx. 1,246
20G11BF650JN2NNNNN	PowerFlex 755	690 VAC	650 A / 630 kW ND	Large pumps, fans and conveyors	Frame 9 MCC	Approx. 2453 × 1200 × 600 mm class	Approx. 1,250+
20G11BF1K0JN2NNNNN	PowerFlex 755	690 VAC	1,040 A / 1,000 kW ND	Megawatt-class process equipment	Frame 10 MCC	Approx. 2453 × 1800 × 600 mm class	Approx. 1,850+
25B-D017N104	PowerFlex 525	480 VAC class	Small / medium motor range	General machinery	Compact	Model dependent	Model dependent
20F Series	PowerFlex 753	Low-voltage AC	Medium / high power	Industrial machinery and process control	Modular industrial drive	Model dependent	Model dependent

The first three models are high-power PowerFlex 755 products and are the most relevant when the application requires large motors.

The PowerFlex 525 category is more appropriate for smaller machines where a Frame 9 cabinet would be excessive.

The PowerFlex 753 category provides an intermediate industrial-drive solution for applications that need more capability than a compact general-purpose drive but do not require the largest PowerFlex 755 configuration.

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23. Comparison by Application

Application	Recommended Model	Main Reason
450 kW Heavy Duty motor	20G11BF590JN2NNNNN	450 kW HD rating
500 kW Normal Duty motor	20G11BF590JN2NNNNN	560 kW ND capacity
560 kW Normal Duty motor	20G11BF590JN2NNNNN	Matches ND power class
630 kW Normal Duty motor	20G11BF650JN2NNNNN	630 kW ND capacity
710 kW Normal Duty motor	20G11BF710JN2NNNNN	710 kW ND capacity
750 kW Normal Duty motor	20G11BF765JN2NNNNN	750 kW ND capacity
1 MW Normal Duty motor	20G11BF1K0JN2NNNNN	1,000 kW ND capacity
Smaller industrial motor	PowerFlex 525 family	More compact power class
Medium industrial motor	PowerFlex 753 family	Intermediate industrial-drive range

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24. Difference Between JN0, JN2 and JN4 Configurations

When comparing models with otherwise similar catalog numbers, the final option coding is important.

For the 590 A, 690 VAC configuration, the following comparison is useful:

Model	Current	Voltage	Main Interface Difference	Power Class
20G11BF590JN0NNNNN	590 A	690 VAC	No local HIM configuration	630 / 560 / 450 kW
20G11BF590JN2NNNNN	590 A	690 VAC	Handheld / Local HIM	630 / 560 / 450 kW
20G11BF590JN4NNNNN	590 A	690 VAC	Door-mounted HIM	630 / 560 / 450 kW

This comparison illustrates why the complete catalog number matters.

The basic electrical rating can remain the same while the operator-interface arrangement changes.

For maintenance-intensive installations, the JN2 configuration can be attractive because technicians have a local interface available without requiring the control system to be fully operational.

For installations where a visible operator interface on the cabinet door is preferred, the JN4 configuration can be considered.

For installations where local HIM functionality is not required, the JN0 configuration may be appropriate.

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25. Benefits of the Handheld / Local HIM

The local HIM is particularly useful during commissioning.

A technician can access the drive directly and perform setup tasks without relying entirely on remote network communication.

Typical tasks include:

• Checking drive status
• Reviewing fault conditions
• Adjusting parameters
• Checking motor data
• Monitoring current
• Monitoring speed
• Performing local tests
• Verifying configuration
• Troubleshooting communication problems

For large industrial machinery, this can reduce commissioning time.

It can also make maintenance more convenient because technicians can work directly at the equipment.

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26. Advantages in Industrial Automation

The combination of local HIM and embedded EtherNet/IP gives this model two different levels of access.

The HIM provides local access.

The industrial network provides remote access and system-level control.

This can be particularly useful in large facilities.

For example, an operator may control the production process from a centralized control room while a maintenance technician can inspect the drive locally.

This separation between operator control and maintenance access is practical in many industrial installations.

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27. Advantages for Pump and Fan Applications

For variable-torque applications, the drive can provide a flexible method of matching motor speed to process demand.

A pump may operate at 100% speed during peak demand but only 70–80% speed during lower-demand periods.

A fan can similarly reduce speed when less airflow is required.

The advantage is not simply speed control.

The drive can also provide:

• Smooth starting
• Smooth stopping
• Controlled acceleration
• Remote monitoring
• Fault reporting
• Process coordination
• Network control

This makes it more useful than a simple fixed-speed motor starter.

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28. Advantages for Conveyor Applications

Conveyor systems can benefit from controlled acceleration.

The drive can gradually increase motor speed.

This can reduce sudden loading on the mechanical drive train.

It can also make the material flow more predictable.

In a long conveyor, this can be especially important because the belt and material load may have considerable inertia.

The drive can also communicate speed and operating status to the control system.

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29. Advantages for Process Plants

Process plants often contain many motors operating as part of one integrated production system.

A networked variable frequency drive can provide a common control structure.

The control system can monitor:

• Motor speed
• Current
• Drive status
• Faults
• Warnings
• Operating conditions

The drive can also receive commands from the plant control system.

This allows the motor to become part of the process rather than operating as an isolated machine.

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30. Purchasing and Replacement Considerations

When purchasing 20G11BF590JN2NNNNN, the entire catalog number should be checked.

The following characteristics are particularly important:

Purchasing Item	Required Check
Voltage	690 VAC
Current	590 A
Light Duty	630 kW
Normal Duty	560 kW
Heavy Duty	450 kW
Frame	Frame 9
Enclosure	IP20 / NEMA Type 1
Cabinet Depth	600 mm
Cooling	Forced Air
Communication	Embedded EtherNet/IP
Filtering	Filtered
CM Configuration	Jumper Installed
Braking	No internal dynamic braking
Local Interface	Handheld / Local HIM
Dimensions	Approx. 2453 × 1200 × 600 mm
Weight	Approx. 1,246 kg
Installation	MCC / Cabinet
Motor Current	Must be checked against duty
Motor Power	Must be checked against LD / ND / HD

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31. Engineering Selection Example

Suppose a plant has a 690 VAC motor with a nominal power requirement of approximately 500 kW.

The first step is to check the motor’s rated current.

If the motor current is within the drive’s allowable current rating and the operating conditions fit the Normal Duty classification, the 20G11BF590JN2NNNNN may be a suitable candidate.

If the application requires frequent overload or high starting torque, the Heavy Duty rating must be considered.

If the motor requires approximately 600–630 kW under Normal Duty, the next larger current class may be more appropriate.

This illustrates why selecting a drive based solely on horsepower can be misleading.

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32. Technical Advantages Summary

Feature	Practical Advantage
690 VAC	Suitable for large industrial power systems
590 A	High motor-current capability
630 kW LD	Large variable-torque application capability
560 kW ND	Strong general industrial rating
450 kW HD	High-torque application capability
Frame 9	High-power industrial construction
600 mm MCC	Suitable for centralized electrical installations
IP20 / Type 1	Suitable for protected electrical rooms
Forced Air	Appropriate thermal-management architecture
Embedded EtherNet/IP	Easy automation integration
Local HIM	Convenient commissioning and maintenance
EMC Filter	Supports electrical-noise management
CM Jumper Installed	Specific common-mode configuration
No Internal Dynamic Braking	Allows braking solution to be designed separately
Variable Speed	Flexible process operation
Controlled Acceleration	Reduces mechanical starting shock
Diagnostic Capability	Improves troubleshooting

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33. Final Detailed Parameter Table

Category	Specification
Model	20G11BF590JN2NNNNN
Brand	Allen-Bradley
Product Family	PowerFlex
Product Series	PowerFlex 755
Product Type	High-Power AC Variable Frequency Drive
Voltage	690 VAC
Phase	Three Phase
Rated Current	590 A
Light Duty Rating	630 kW
Normal Duty Rating	560 kW
Heavy Duty Rating	450 kW
Frame	Frame 9
Cooling	Forced Air
Enclosure	IP20 / NEMA Type 1
Cabinet Construction	600 mm Deep MCC Style
Height	Approx. 2,453 mm
Width	Approx. 1,200 mm
Depth	Approx. 600 mm
Weight (kg)	Approx. 1,246 kg
Input Type	AC Input with Precharge
DC Terminals	Included
Communication	Embedded EtherNet/IP
Filtering	Filtered
Common-Mode Jumper	Installed
Dynamic Braking	None
Local Interface	Handheld / Local HIM
HIM Display	Enhanced LCD / Full Numeric
Motor Type	Three-Phase AC Motor
Main Applications	Pumps, fans, conveyors, mining, cement, metals, material handling and process equipment
Installation	Industrial MCC / Electrical Cabinet
Main Advantage	High-power motor control with local commissioning interface and network integration

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34. Overall Evaluation

The 20G11BF590JN2NNNNN is a high-power industrial variable frequency drive designed for large AC motor applications.

Its principal electrical rating is 590 A at 690 VAC, with approximately 630 kW Light Duty, 560 kW Normal Duty and 450 kW Heavy Duty capability.

The Frame 9 construction and 600 mm MCC-style cabinet make it suitable for centralized industrial electrical installations.

The approximately 2,453 mm × 1,200 mm × 600 mm physical size and approximately 1,246 kg weight place it firmly in the category of large industrial electrical equipment.

One of its most useful characteristics is the handheld/local HIM configuration.

This provides technicians with a direct interface for commissioning, monitoring, parameter adjustment and troubleshooting.

The embedded EtherNet/IP interface provides a second control path for integration into the plant automation system.

This combination is particularly practical in large industrial plants because the drive can be controlled remotely while maintenance personnel retain local access.

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

The main technical strengths are its high current capability, 690 VAC voltage class, large power rating, industrial Frame 9 construction, forced-air cooling, embedded network communication and local HIM functionality.

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35. Conclusion

The 20G11BF590JN2NNNNN is a high-capacity PowerFlex 755 AC variable frequency drive intended for large industrial motor-control applications.

Its electrical configuration is centered around 690 VAC three-phase input, 590 A current, 630 kW Light Duty, 560 kW Normal Duty and 450 kW Heavy Duty.

Its mechanical construction is based on a Frame 9, 600 mm deep MCC-style enclosure, with approximate dimensions of 2,453 mm × 1,200 mm × 600 mm and an approximate weight of 1,246 kg.

The product’s major functional advantages include variable-speed motor control, controlled acceleration and deceleration, embedded EtherNet/IP communication, industrial-scale construction and a handheld/local HIM for commissioning and maintenance.

Compared with the JN0 configuration, the JN2 version is especially attractive when a local operator and maintenance interface is required.

Compared with the JN4 configuration, the JN2 configuration is more oriented toward a handheld/local interface rather than a permanently door-mounted operator interface.

For applications around 450 kW Heavy Duty, 560 kW Normal Duty or 630 kW Light Duty, this 590 A configuration provides a strong starting point for drive selection.

For higher-power applications, the 20G11BF650JN2NNNNN, 20G11BF710JN2NNNNN and 20G11BF765JN2NNNNN are useful higher-capacity candidates.

For smaller motor systems, a smaller drive family is generally more economical and easier to install.

When selecting this product for an actual project, motor voltage, motor current, motor power, duty classification, overload requirements, acceleration profile, deceleration requirements, braking, cable arrangement, cooling, enclosure environment, network architecture, physical dimensions and lifting weight should all be evaluated together.

Overall, the 20G11BF590JN2NNNNN can be summarized 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 with embedded EtherNet/IP and handheld/local HIM functionality, intended for large-scale variable-speed motor control and demanding industrial process applications.