Company Information
E-mail		[email protected]
Mobile		+8615980777398
Whatsapp		+8615980777398
WeChat		15980777398

20G1ALC650AN2NNNNN PowerFlex 755 AC Drive — Detailed Product Information, Technical Parameters, Applications and Related Models

The 20G1ALC650AN2NNNNN is a high-power air-cooled AC variable-frequency drive in the PowerFlex 755 series. It is designed for large industrial motor applications where high current capacity, variable-speed operation, industrial networking and centralized control are required.

This model is part of the 400 V AC / three-phase / Frame 8 class. Its principal rating is 650 A, with published power ratings of 400 kW Light Duty, 355 kW Normal Duty and 315 kW Heavy Duty.

The model uses a large MCC-style construction with forced-air cooling and an 800 mm deep enclosure arrangement. It is intended for substantial industrial installations rather than small machine-control panels.

---

1. Basic Product Information

The 650 A rating is the key electrical characteristic of this model. Depending on the required duty, the same drive has different usable motor-power ratings.

---

2. Brand and Product Series

Brand

The brand is Allen-Bradley.

Allen-Bradley products are widely used in industrial automation, motor control, machine control and process-control systems.

For this particular product, the relevant product family is PowerFlex.

---

Product Family

The model belongs to the PowerFlex 750-Series.

The PowerFlex 750-Series is a modular industrial AC-drive platform covering different drive ratings, frames, voltage classes and application requirements.

---

Product Series

The specific series is PowerFlex 755.

The PowerFlex 755 is intended for higher-performance and higher-power industrial motor-control applications.

Compared with compact drives, the PowerFlex 755 platform is designed for larger motors and more demanding industrial installations.

---

3. Product Model

20G1ALC650AN2NNNNN

The complete catalog number should always be considered when identifying this drive.

The model number contains configuration information covering the drive family, voltage class, input arrangement, current class, enclosure configuration, filtering/common-mode configuration and operator-interface configuration.

This is important because there are several PowerFlex 755 models with very similar current and power ratings.

For example, a 650 A model with one HIM configuration should not automatically be considered identical to another 650 A model with a different HIM or common-mode configuration.

---

4. Main Technical Parameters

---

5. Power Rating

The drive has three principal duty ratings.

The distinction between these ratings is important when selecting the drive.

A motor’s nameplate power alone does not determine whether the drive is suitable.

For example, a conveyor can have the same motor power as a large fan, but its starting torque and overload requirements can be considerably different.

Similarly, a large pump may operate with a relatively smooth load profile, while a material-handling machine may require repeated acceleration and higher torque.

Therefore, the drive should be selected according to the motor current, duty cycle, overload requirements and actual mechanical load.

---

6. Electrical Configuration

The 20G1ALC650AN2NNNNN is a 400 VAC three-phase drive.

Its high current rating makes it suitable for large industrial motors.

The drive uses an AC input with precharge and does not provide DC terminals in this configuration.

The precharge arrangement is important in high-power drives because the internal DC-link capacitors require controlled charging when the drive is energized.

The configuration also includes filtering.

---

7. Physical Dimensions and Weight

Physical size is particularly important for this model.

The approximate dimensions are therefore:

2453 mm H × 600 mm W × 800 mm D

The approximate weight is:

623 kg

This is a very large industrial drive.

It requires suitable transportation equipment, lifting arrangements, floor loading capacity, installation space and maintenance access.

The final mechanical dimensions and shipping weight should be checked against the actual equipment drawing when preparing a project installation.

---

8. Product Introduction

The 20G1ALC650AN2NNNNN is a high-power AC drive designed to regulate the operation of large three-phase AC motors.

Its basic function is to convert incoming electrical power into controlled motor power.

Instead of allowing the motor to operate continuously at a fixed speed, the drive can vary motor frequency and voltage to control motor speed.

This provides a practical way to coordinate motor operation with the requirements of an industrial process.

For example, a pump may not need to run at maximum speed all the time.

A fan may need different airflow during different production periods.

A conveyor may require controlled acceleration before reaching its operating speed.

A process machine may require different speeds during different stages of production.

In these applications, variable-frequency control provides a way to adjust motor operation according to the actual process requirement.

---

9. Product Construction

The model uses a Frame 8 construction.

Frame 8 is associated with the larger PowerFlex 755 drive ratings.

The large frame provides the physical space required for high-current power components, cooling equipment, electrical connections and control hardware.

The drive uses forced-air cooling.

This cooling method is necessary because high-power semiconductor components generate substantial heat during operation.

The enclosure is specified as Type 1 / IP20, meaning the installation should provide the environmental protection required for the particular industrial environment.

---

10. Embedded EtherNet/IP

One of the important characteristics of the PowerFlex 755 platform is industrial communication capability.

The 20G1ALC650AN2NNNNN includes embedded EtherNet/IP.

This allows the drive to become part of a larger automation network.

Typical control and monitoring information can include:

• Start command
• Stop command
• Speed reference
• Frequency reference
• Drive status
• Output current
• Operating frequency
• Fault information
• Warning information
• Diagnostic information
• Parameter information

This arrangement is especially useful in large factories where the motor drive needs to communicate with a PLC, HMI or supervisory control system.

---

11. HIM Configuration

The AN2 configuration distinguishes this model from similar PowerFlex 755 models using other HIM arrangements.

HIM means Human Interface Module.

The HIM provides a local interface for drive operation, parameter access, configuration and diagnostic information.

For this catalog configuration, the exact supplied interface arrangement should be confirmed against the equipment label and purchasing configuration before installation, particularly when comparing AN0, AN2 and AN4 versions.

The important point is that the final two configuration sections of the catalog number can affect the operator-interface arrangement.

---

12. Cooling System

The drive uses forced-air cooling.

A large drive operating at hundreds of amperes produces considerable heat.

The cooling system transfers this heat away from the power components.

For this reason, installation design should include:

• Adequate airflow
• Appropriate ambient temperature
• Clear ventilation paths
• Correct cabinet arrangement
• Proper service access
• Periodic cooling-system maintenance

The cooling system should not be treated as a secondary consideration.

Poor airflow can result in increased operating temperature and can affect the drive’s ability to operate continuously at its rated capacity.

---

13. Filtering and Electrical Noise

The model uses a filtered configuration.

Variable-frequency drives use high-speed power switching, which can produce electrical noise and high-frequency components.

Filtering, grounding, cable selection and installation practices therefore become important in industrial environments.

Proper motor-cable routing is also important.

Power cables should be arranged in accordance with the installation requirements of the overall electrical system, especially where sensitive control or communication wiring is installed close to high-power motor cables.

---

14. Main Product Advantages

High-Power Motor Control

The 650 A class provides enough capacity for very large industrial motors.

With a Light Duty rating of approximately 400 kW, the drive is intended for applications far beyond the range of typical compact machine drives.

---

Multiple Duty Ratings

The drive provides different ratings for Light Duty, Normal Duty and Heavy Duty applications.

This gives engineers greater flexibility when matching the drive to the actual mechanical load.

---

Industrial Network Integration

Embedded EtherNet/IP makes it easier to integrate the drive into a networked automation system.

This is useful when a production line contains many motors and the control system needs to monitor and control them centrally.

---

Large Industrial Frame

Frame 8 construction provides the physical capacity required for high-power electrical components.

It is appropriate for large MCC and electrical-room installations.

---

Controlled Acceleration

The drive can provide controlled acceleration instead of simply connecting the motor directly to the power supply.

This is particularly useful for large conveyors, pumps and machines with significant rotating inertia.

---

Controlled Deceleration

The motor can also be brought down from operating speed in a controlled manner.

This can be useful where uncontrolled stopping could cause mechanical stress or process problems.

---

Centralized Diagnostics

Networked operation makes it possible to bring drive status and diagnostic information into a central automation system.

This can make troubleshooting easier in large plants.

---

15. Product Applications

15.1 Large Water Pumps

The drive can be used with large water pumps in industrial facilities.

Pump speed can be adjusted according to the required flow and pressure.

This makes the drive suitable for water-transfer systems, circulation systems, cooling-water systems and industrial pumping installations.

---

15.2 Process Pumps

Large process plants frequently use pumps with motors rated in the hundreds of kilowatts.

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

This can be useful where process flow needs to change throughout the production cycle.

---

15.3 Large Fans

Industrial ventilation systems can require large motors.

The drive can control fan speed according to required airflow.

This can be useful in factories, processing facilities, large buildings and industrial ventilation systems.

---

15.4 Blowers

Large blowers can require substantial motor power.

Variable-speed operation allows the blower to be operated at different speeds according to process demand.

---

15.5 Conveyors

Large belt conveyors can require high motor torque, especially during acceleration.

The drive can control acceleration and deceleration.

This can help reduce sudden mechanical loading on the conveyor system.

---

15.6 Material Handling

Large material-handling systems often use high-power motors.

Examples include:

• Bulk-material conveyors
• Feeders
• Transfer systems
• Industrial transport equipment
• Large production-line conveyors

---

15.7 Process Machinery

The drive can be used with large process machines that require adjustable motor speed.

This can include equipment used in manufacturing, processing and material production.

---

16. Application and Selection Table

---

17. Five Related Models in the Same Series

The following models are closely related to the 20G1ALC650AN2NNNNN and can be considered when comparing PowerFlex 755 configurations.

The 567 A, 650 A, 750 A and 770 A models are especially close in terms of the 400 V-class high-power application range.

The 710 A model belongs to a different voltage class, so it should be considered a related model rather than a direct electrical replacement.

---

18. Physical Comparison of Related Models

For the 400 V Frame 8 MCC-style versions, the overall mechanical envelope can be similar.

However, the actual finished assembly, shipping weight and installation arrangement can vary depending on the complete configuration.

For project engineering, the final mechanical drawing should always take priority over a nominal frame-level dimension.

---

19. Five Related Models from the Same Brand

The following models represent other commonly encountered products within the same brand’s variable-frequency-drive portfolio.

These models cover very different application ranges.

The compact models are generally intended for smaller machines, while the PowerFlex 753 and PowerFlex 755 families extend into considerably larger industrial equipment.

---

20. Same-Brand Model Comparison

The 20G1ALC650AN2NNNNN is substantially larger than compact drive models.

It is designed for installations where the motor itself can require hundreds of kilowatts and hundreds of amperes.

---

21. Dimensions and Weight Comparison

The 20G1ALC650AN2NNNNN is clearly intended for a large electrical installation.

Its physical requirements should be included during the initial equipment-layout stage rather than after the electrical design has already been completed.

---

22. Installation Considerations

Electrical Supply

The drive is designed for a 400 VAC three-phase system.

The incoming electrical system should therefore be compatible with the drive’s voltage class and installation requirements.

---

Motor Compatibility

The motor’s nameplate current is one of the most important selection factors.

The motor current should be checked against the applicable drive rating.

The motor’s kW rating should also be considered together with its overload and starting requirements.

---

Cabinet Space

The approximately 800 mm depth is an important installation parameter.

The cabinet and electrical-room layout should allow sufficient room for:

• Power cables
• Control cables
• Network cables
• Ventilation
• Maintenance
• Inspection
• Removal of service components

---

Floor Loading

At approximately 623 kg, the equipment requires appropriate structural support.

Transportation and lifting should be planned before the equipment arrives at the site.

---

Ventilation

Because the drive is forced-air cooled, adequate airflow is essential.

The installation should not obstruct the air inlet or outlet.

---

23. Maintenance

Regular maintenance is important for a high-power drive.

The cooling system should be inspected regularly.

The following items are particularly relevant:

Large drives can operate for long periods under heavy load, so preventive maintenance is preferable to waiting for a component failure.

---

24. Application Advantages

The use of the 20G1ALC650AN2NNNNN can provide several practical benefits to a large industrial system.

Adjustable Motor Speed

Motor speed can be changed according to process demand.

Controlled Starting

The motor can accelerate progressively instead of immediately reaching full speed.

Controlled Stopping

The motor can decelerate according to programmed requirements.

Centralized Control

The drive can communicate with a larger automation system.

High-Power Capability

The drive is capable of controlling very large motors.

Process Flexibility

Different motor speeds can be used for different operating conditions.

Diagnostic Information

Drive operating conditions and faults can be monitored through the control architecture.

---

25. Suitable Industries

The product can be considered for applications in industries such as:

The actual suitability depends on motor specifications, load characteristics, environmental conditions and the complete drive configuration.

---

26. Recommended Selection Checklist

Before purchasing or replacing the drive, the following parameters should be checked.

---

27. Comparison of the Five Closely Related PowerFlex 755 Models

The 650 A model sits between the lower-current 567 A configuration and the higher-current 750/770 A configurations.

This makes it particularly useful for applications where a 567 A rating is insufficient but a 750 A or 770 A drive would provide more capacity than necessary.

---

28. Overall Technical Summary

---

29. Final Product Overview

The 20G1ALC650AN2NNNNN is a large-frame PowerFlex 755 AC drive designed for high-power industrial motor control.

Its 400 VAC three-phase input, 650 A current class, and 400 kW Light Duty / 355 kW Normal Duty / 315 kW Heavy Duty ratings make it suitable for large motors used in industrial production and process equipment.

The Frame 8 construction gives the drive the physical capacity required for high-current power conversion.

The forced-air cooling system is designed to remove the heat generated by the high-power switching components.

The Type 1 / IP20, 800 mm deep MCC-style configuration is intended for an appropriate industrial electrical environment rather than direct exposure to outdoor conditions.

The approximate physical dimensions are 2453 mm high × 600 mm wide × 800 mm deep, and the approximate weight is 623 kg.

Because of its size and weight, installation requires careful planning for transportation, lifting, structural support, ventilation, cable routing and maintenance access.

The embedded EtherNet/IP capability is particularly useful in modern industrial automation systems because the drive can be incorporated into a networked control structure.

The drive can receive commands and operating references from a central control system while returning status, current, operating conditions, warnings and fault information.

The model is suitable for large pumps, fans, blowers, conveyors, feeders, material-handling systems and other process machinery.

When selecting this drive, the most important factors are the actual motor current, motor voltage, motor power, duty cycle, overload requirements, starting torque, braking requirements, environmental conditions and communication requirements.

The 20G1ALC650AN2NNNNN should therefore be viewed as a complete high-power drive configuration rather than simply as a 650 A VFD.

Its combination of high current capacity, large Frame 8 construction, variable-speed motor control, industrial communication, forced-air cooling and multiple duty ratings makes it suitable for substantial industrial motor-control installations.