Allen-Bradley 20G1ALC567JN2NNNNN – PowerFlex 755 AC Drive

1. Product Overview

The 20G1ALC567JN2NNNNN is a high-power air-cooled AC drive from the PowerFlex 755 family. It is designed for demanding industrial motor-control applications where relatively high motor power, stable speed regulation, flexible control, and industrial communication are required.

The unit is a 400 VAC, three-phase drive with a rated output current of 567 A. Its published ratings are approximately 355 kW for Light Duty (LD), 315 kW for Normal Duty (ND), and 250 kW for Heavy Duty (HD). It uses a large Frame 8 construction and an 800 mm deep MCC-style enclosure configuration.

The model incorporates an embedded EtherNet/IP communication interface, forced-air cooling, AC input with precharge, and no DC terminals. The enclosure classification is Type 1 / IP20, with filtering and a CM jumper installed. The specified configuration also includes an enhanced LCD, full numeric keypad, and handheld/local HIM arrangement.

This combination makes the 20G1ALC567JN2NNNNN a large industrial variable-frequency drive intended for centralized motor control systems, large rotating equipment, production machinery, material-handling systems, process equipment, and other applications where conventional small-frame drives are not sufficient.

2. Brand and Product Series

The product belongs to the PowerFlex 755 section of the PowerFlex 750-Series. The 750-Series is designed as a modular industrial drive platform, with different drive sizes, power ratings, feedback options, communication options, safety functions, and installation configurations available across the family.

For this particular catalog number, the product description identifies it as an air-cooled PowerFlex 755 drive with embedded EtherNet/IP, 400 VAC three-phase input, 567 A current rating, Frame 8 construction, and an 800 mm deep MCC-style configuration.

3. Detailed Technical Parameters

The following table summarizes the principal parameters of 20G1ALC567JN2NNNNN.

The 567 A current rating and three power ratings are important because the usable motor capacity depends on the duty classification. A motor application with continuous high loading, frequent overloads, or demanding acceleration should not be selected solely from the Light Duty figure. The Normal Duty and Heavy Duty values need to be considered according to the actual load profile.

For the IP20 Frame 8 MCC-style configuration, published dimensional information is approximately 2453 mm high × 600 mm wide × 800 mm deep, with an approximate weight of 623 kg. These dimensions and weight are cabinet-level approximate values and should be treated as installation-planning figures rather than a substitute for the exact mechanical drawing of a specific assembled configuration.

4. Model Number Interpretation

The catalog number contains configuration information rather than being simply a random product identifier.

The complete catalog number must be considered when ordering or replacing the drive. Two PowerFlex 755 drives can have the same basic current rating but differ in enclosure arrangement, HIM configuration, input arrangement, communication options, filtering, braking configuration, or other factory-selected options.

For replacement work, matching only the 567 A rating is therefore not sufficient. The complete catalog number should be checked against the existing installation.

5. Product Description

The 20G1ALC567JN2NNNNN is essentially a large industrial motor-control platform built around the PowerFlex 755 architecture.

Its job is to take incoming three-phase AC electrical power and control the frequency and voltage delivered to an AC motor. By adjusting the output frequency and voltage, the drive can control motor speed, acceleration, deceleration, and other operating characteristics.

At this size, the drive is intended for substantially larger motors than compact machine-level variable-frequency drives. The 567 A rating places it in the large-drive category, making it suitable for heavy industrial equipment and high-power rotating machinery.

The forced-air cooling system is particularly important because high-current power electronics generate considerable heat during operation. The large Frame 8 enclosure provides the physical space necessary for the power-conversion components, cooling system, control electronics, connection hardware, and associated components.

The embedded EtherNet/IP interface is another important part of the configuration. It allows the drive to be incorporated into an industrial automation network, where operating commands, status information, parameters, alarms, and diagnostic information can be exchanged with an appropriate control system.

6. Main Product Features

High-Power 400 VAC Operation

The drive is designed for a 400 VAC three-phase supply and provides a 567 A current class. This puts it in a range appropriate for large industrial motors and high-power mechanical systems.

The published power ratings are:

• 355 kW Light Duty
• 315 kW Normal Duty
• 250 kW Heavy Duty

The correct rating should always be selected according to the motor nameplate and the actual load duty rather than simply choosing the largest numerical kW value.

Embedded EtherNet/IP

The embedded EtherNet/IP capability allows the drive to communicate directly with compatible industrial control systems without necessarily requiring a separate communication adapter for basic network integration.

This can simplify the architecture of an automation system and makes it easier to exchange drive commands, speed references, operating status, fault information, and other control data.

For a large production line, this can be useful because the drive becomes part of the overall control architecture instead of operating as an isolated motor controller.

Forced-Air Cooling

The 20G1ALC567JN2NNNNN uses forced-air cooling.

Large drives generate significant thermal losses, particularly under high-current operation. The cooling system moves air through the drive assembly and removes heat from the power components.

Correct enclosure ventilation, air temperature, airflow, filter maintenance, and cabinet design are therefore important when installing this type of drive.

AC Input with Precharge

The specified configuration uses AC input with precharge and does not use DC terminals.

Precharge is used to manage the charging process of the drive’s DC-link capacitors during startup. This is especially important in a large drive because uncontrolled capacitor charging can produce a substantial initial current.

IP20 / Type 1 Construction

The catalog configuration is specified as Type 1 / IP20.

This type of construction is intended for installation in an appropriate industrial environment and cabinet arrangement rather than direct exposure to outdoor weather, water spray, or severe contamination.

The IP20 classification means the installation should provide the environmental protection required by the application.

7. Product Applications

The 20G1ALC567JN2NNNNN is intended for large industrial motor applications where precise and controlled AC motor operation is required.

Typical application areas include the following.

Pumps

Large process pumps, water-treatment pumps, cooling-water systems, circulation pumps, and industrial pumping systems can use high-power AC drives to regulate flow by controlling motor speed.

Compared with operating a pump continuously at full speed and controlling flow only through mechanical throttling, variable-speed operation can provide a different operating strategy and may reduce unnecessary motor speed during lower-demand periods.

Fans and Blowers

Large ventilation systems, industrial exhaust systems, combustion-air systems, process fans, and large blowers can require substantial motor power.

A variable-frequency drive allows the fan or blower speed to be adjusted according to the required process condition.

Conveyors

Large conveyors in mining, material handling, manufacturing, ports, warehouses, and bulk-material processing can require high-power motors.

A large PowerFlex 755 drive can be used to provide controlled starting, stopping, acceleration, deceleration, and operating speed.

This can be especially useful for conveyors where abrupt motor starting would otherwise create significant mechanical stress.

Industrial Processing Machinery

Large process machines often need a motor to operate at different speeds during different stages of production.

The drive can provide adjustable motor speed while communicating operating conditions to a plant automation system.

Crushers and Heavy Material Equipment

Large material-processing equipment can have demanding motor loads.

In such applications, the drive’s current capacity and duty rating become important because the motor may experience substantial load variation.

The correct Heavy Duty rating must be considered where the application involves repeated overloads or high torque requirements.

Large Material-Handling Systems

Large hoisting-related auxiliary systems, conveyors, feeders, and other material-handling machinery may use high-power AC drives.

The actual suitability depends on the mechanical arrangement, braking requirements, load profile, safety architecture, and required torque characteristics.

Industrial Water and Wastewater Systems

Large pumping stations and treatment plants can use variable-speed drives for high-power pumps.

The network communication capability is particularly useful in centralized facilities where the drive needs to exchange operating information with a supervisory or PLC-based control system.

8. Product Advantages

8.1 High Current Capacity

The 567 A rating allows the drive to control substantially larger motors than compact variable-frequency drives.

This makes it appropriate for large industrial machinery where motor power can reach hundreds of kilowatts.

8.2 Multiple Duty Ratings

The drive provides different power ratings for different operating-duty classifications.

The stated ratings are 355 kW LD, 315 kW ND, and 250 kW HD. This gives the system designer a way to match the drive to the actual motor load rather than relying on one universal power rating.

8.3 Industrial Network Integration

The embedded EtherNet/IP interface is useful in plants that already use networked industrial automation.

It can reduce the need for additional communication hardware for basic network connectivity and allows drive information to become part of the larger control system.

8.4 Suitable for Large Centralized Systems

The Frame 8 MCC-style construction is appropriate for large electrical rooms, MCC areas, drive cabinets, and centralized motor-control installations.

Its physical size is substantial, so it is not intended as a small machine-mounted drive.

8.5 Local Operator Interface

The specified configuration includes an enhanced LCD full-numeric HIM arrangement.

This gives operators and maintenance personnel a local interface for drive setup, parameter access, operating information, and troubleshooting.

8.6 Flexible Industrial Application

The PowerFlex 755 architecture is intended for applications where motor control, communications, feedback, safety, and drive configuration can need to be combined into one industrial control platform.

This makes the family adaptable to a wide range of industrial equipment.

9. Installation and Engineering Considerations

The 20G1ALC567JN2NNNNN is not a compact component.

At approximately 2453 mm high × 600 mm wide × 800 mm deep and approximately 623 kg, the Frame 8 MCC-style configuration requires proper mechanical support, lifting arrangements, cabinet planning, cable routing, ventilation, and service access.

The 800 mm cabinet depth is particularly important when designing an electrical room or MCC lineup.

Adequate clearance should be provided around the equipment according to the applicable installation documentation and local electrical requirements.

The ventilation system also needs to be considered carefully. A high-power air-cooled drive depends on sufficient airflow, and restricted airflow or excessive ambient temperature can affect operating capability and component life.

The drive should also be protected from environmental conditions outside its specified installation requirements. IP20 does not mean the drive is suitable for direct exposure to dust, water, or outdoor weather.

10. Parameters at a Glance

11. Five Related Models from the Same PowerFlex 755 Series

The following models are closely related PowerFlex 755 configurations. They are useful when comparing current capacity, power rating, and operator-interface configuration.

The 650 A configuration, for example, is specified at 400 kW LD, 355 kW ND, and 315 kW HD, while the 750 A configuration is specified at 450 kW LD, 400 kW ND, and 315 kW HD. The 770 A version increases the Heavy Duty rating to approximately 355 kW.

These models are not interchangeable simply because they belong to the same series. Current rating, power rating, cabinet arrangement, HIM configuration, and application duty must all be checked before substitution.

12. Dimensions and Weight Comparison for Related Frame 8 Models

Because these high-current models use the same general Frame 8 / MCC-style mechanical platform, the overall cabinet envelope can be similar even when the electrical rating changes.

The dimensions and weight above should be treated as approximate Frame 8 IP20 MCC-style installation figures rather than guaranteed shipping weights for every individual catalog configuration. Options, cabinet assemblies, filters, accessories, and installation arrangements can change the actual mechanical envelope and mass.

13. Five Related Models from the Same Brand

The following are representative Allen-Bradley drive models from other commonly used drive families. They are intended for comparison with the PowerFlex 755 rather than as direct one-for-one replacements.

The PowerFlex 525 and 527 are physically and electrically much smaller classes of drives than the PowerFlex 755 Frame 8. They are therefore better viewed as products for smaller motor-control applications rather than direct replacements.

The PowerFlex 753 is structurally closer to the PowerFlex 755 family in terms of industrial drive architecture, but exact selection depends heavily on required power, feedback, motion requirements, safety functions, communication, and load characteristics.

14. Same-Brand Model Comparison

The key point is that these products occupy different parts of the drive-power spectrum. A smaller model may be more suitable for a compact machine, while a Frame 8 PowerFlex 755 is designed around much larger motors and electrical installations.

15. Practical Advantages of the PowerFlex 755 Series

The PowerFlex 755 platform is particularly suited to applications where the drive is expected to be more than a simple speed controller.

A large industrial installation may require the drive to communicate with a PLC, provide detailed operating information, accept different speed references, support feedback devices, participate in a safety architecture, and provide diagnostic information to maintenance personnel.

The PowerFlex 755 architecture is designed around this type of industrial environment.

Another important characteristic is scalability. Different current ratings and physical frames allow the same general drive family to be used across different motor sizes.

For engineering departments, this can simplify standardization because related drives can share a common control philosophy and similar operating concepts.

16. Why the 20G1ALC567JN2NNNNN Is Used for Large Equipment

The most obvious reason for choosing this model is its current capacity.

A 567 A output rating is intended for substantially larger motors than the compact drives commonly installed on individual small machines.

The 355 kW LD rating also places the product firmly in the high-power industrial category.

The Frame 8 MCC-style construction is another indication of the intended installation environment. This is equipment designed to be installed as part of a substantial electrical system rather than simply attached to a small control panel.

The integrated EtherNet/IP capability further supports centralized control and monitoring.

Together, these characteristics make the product suitable for large pumps, fans, conveyors, process machinery, and other high-power rotating equipment.

17. Selection Notes Before Replacement

When replacing an existing drive with 20G1ALC567JN2NNNNN, the following information should be checked:

This is particularly important because a drive replacement should not be based solely on voltage and kW.

For a high-power Frame 8 installation, mechanical compatibility can be just as important as electrical compatibility.

18. Summary

The 20G1ALC567JN2NNNNN is a high-power Allen-Bradley PowerFlex 755 AC drive belonging to the PowerFlex 750-Series.

Its principal electrical characteristics are 400 VAC, three-phase input, 567 A current capacity, 355 kW Light Duty, 315 kW Normal Duty, and 250 kW Heavy Duty. It uses a Frame 8, forced-air-cooled construction with IP20 / Type 1 protection, an 800 mm deep MCC-style cabinet, and embedded EtherNet/IP communication.

The specified configuration includes an enhanced LCD full-numeric HIM, AC input with precharge, no DC terminals, filtered input configuration, CM jumper installation, and no dynamic braking.

For installation planning, the approximate Frame 8 IP20 MCC-style dimensions are 2453 mm × 600 mm × 800 mm, with an approximate weight of 623 kg. Because this is a large industrial assembly, actual installed dimensions and shipping weight should be checked against the exact mechanical configuration before purchasing, transporting, or installing the equipment.

The product is best suited to large industrial motor applications such as pumps, fans, blowers, conveyors, process machinery, material-handling equipment, and other systems requiring controlled operation of high-power AC motors.

Its main technical advantages are its high current capacity, multiple duty ratings, industrial network integration, large-drive architecture, local operator interface, and compatibility with the broader PowerFlex 755 platform.