Allen-Bradley 20G1ABE355AN0NNNNN PowerFlex 755 AC Drive

1. Product Overview

The Allen-Bradley 20G1ABE355AN0NNNNN is a PowerFlex 755 AC drive designed for high-power industrial motor control applications where reliable speed regulation, controlled acceleration and deceleration, process coordination, and flexible motor control are required.

This model belongs to the PowerFlex 755 family within the PowerFlex 750-Series architecture. It is a large-frame, air-cooled AC drive intended for demanding industrial installations, particularly applications involving large motors, substantial mechanical loads, and continuous process operation.

The 20G1ABE355AN0NNNNN is configured for a 600 VAC, three-phase supply and provides a nominal output current rating of 355 A. Depending on the selected duty classification, it is rated for approximately 400 HP in Light Duty operation, 350 HP in Normal Duty operation, and 300 HP in Heavy Duty operation.

The drive uses a Frame 8 power structure and a Type 1, IP20 enclosure with a 600 mm deep MCC-style construction. This makes it substantially larger than compact machine-level drives and more suitable for centralized motor-control rooms, electrical rooms, MCC lineups, and large industrial control cabinets.

The model is also configured as an air-cooled unit with forced-air thermal management. The power section is designed to handle significant continuous electrical loading while maintaining the thermal performance required for high-power motor applications.

An important point when selecting this exact catalog number is its lifecycle status. The 20G1ABE355AN0NNNNN has been discontinued, with a listed discontinuation date of June 30, 2024. Its direct replacement is 20G1ABE355JN0NNNNN.

The newer JN0 configuration retains the basic 355 A, 600 VAC, Frame 8, 600 mm deep architecture and no-HIM configuration, while using the newer CM-jumper configuration. Therefore, for a new installation, the replacement catalog number should normally be evaluated rather than assuming the older AN0 version is still the preferred procurement choice.

2. Brand and Series

The product family is intended for applications where a conventional compact VFD is not sufficient and where the system requires higher power, greater control flexibility, networking capability, and a more extensive industrial drive architecture.

3. Detailed Technical Parameters

The following table summarizes the principal characteristics of the 20G1ABE355AN0NNNNN.

The dimensional and weight values should be regarded as engineering-level approximate values for the large Frame 8 configuration. Final cabinet layout should always be based on the applicable mechanical drawing for the exact drive configuration, accessories, wiring bay, and installation arrangement.

The 355 A rating is particularly important because this catalog number sits in the middle of the 600 V Frame 8 power range. The corresponding 600 V PowerFlex 755 selection data places the 355 A model at 400 HP Light Duty, 350 HP Normal Duty, and 300 HP Heavy Duty.

4. Understanding the 355 A Duty Ratings

One of the important characteristics of this drive is that the same basic power structure can be applied to different motor-duty requirements.

For the 20G1ABE355AN0NNNNN, the principal ratings are:

The difference between these ratings is not simply a matter of motor horsepower. It reflects the amount of thermal and overload capability required by the application.

Light Duty is appropriate for applications where the motor generally operates at a relatively stable load and the required overload capability is comparatively moderate.

Normal Duty is more appropriate for general industrial machinery where the load varies during operation and the drive needs a higher level of operating margin.

Heavy Duty is intended for applications where the motor can experience greater torque demand, acceleration loading, or repeated overload conditions, such as conveyors, crushers, mixers, and other mechanically demanding machinery.

The published selection data shows the 355 A family position at 400 HP LD, 350 HP ND, and 300 HP HD.

5. Input and Power Architecture

The 20G1ABE355AN0NNNNN uses a 600 VAC three-phase input architecture and an AC input with precharge.

The precharge arrangement is important in a high-power drive because the DC-link capacitors represent a substantial electrical load when the drive is initially energized. Controlled precharging helps manage the initial charging current and provides a more controlled startup of the drive’s power section.

The catalog configuration does not provide external DC input terminals as part of its standard configuration.

The drive also includes EMC filtering. In the AN0 configuration, the CM jumper is removed. This is one of the configuration details that differentiates the older AN0 catalog number from the newer JN0 replacement.

The newer 20G1ABE355JN0NNNNN is specified with the CM jumper installed, described as the preferred configuration.

6. Cooling System

The 20G1ABE355AN0NNNNN uses forced-air cooling.

At this power level, thermal management is a major part of the drive design. The drive’s power semiconductor devices, DC bus components, capacitors, bus structures, and associated electronics generate significant heat during operation.

The Frame 8 architecture therefore uses a dedicated airflow path and forced-air cooling system to move heat away from the power components.

For installation planning, sufficient cabinet ventilation and clearance around the drive are essential. The cooling system should not be treated as an accessory feature; it is an integral part of the drive’s reliable operation.

In applications with high ambient temperature, dusty environments, corrosive atmospheres, or restricted cabinet airflow, the thermal design of the entire electrical room or enclosure should be reviewed together with the drive.

7. No-HIM Configuration

The final “0” configuration in the catalog number identifies the no-HIM arrangement.

The 20G1ABE355AN0NNNNN is therefore supplied with a blank configuration rather than a local enhanced LCD operator interface.

This configuration is particularly useful in centralized automation systems where the drive is controlled through PLC commands, an HMI system, or an industrial communication network rather than by operators directly using the drive’s front panel.

For example, a large production line may contain several high-power drives installed inside an electrical room. Operators can control motor speed, start/stop commands, status information, alarms, and process parameters from a central control system.

This reduces the need for a local operator interface on every drive and can provide a cleaner electrical-room installation.

8. Embedded EtherNet/IP

The PowerFlex 755 platform is designed around a networked industrial automation architecture, and this configuration supports embedded EtherNet/IP.

This is particularly useful when the drive is integrated into a PLC-based automation system.

Through network integration, the control system can typically exchange operating commands, speed references, status information, diagnostic information, and other drive parameters with the drive.

For a large process plant, this can significantly simplify the control architecture because the drive does not need to operate as an isolated speed controller.

Instead, it becomes part of the larger automation system.

This is one of the major advantages of using a PowerFlex 755 architecture in comparison with a basic standalone variable-frequency drive.

9. Product Construction

The 20G1ABE355AN0NNNNN is a Frame 8 drive.

Frame 8 is intended for considerably higher power applications than compact frame sizes used in small machines.

The 600 mm deep MCC-style construction provides additional internal space for power components, bus structures, cooling arrangements, control electronics, and associated drive hardware.

The Type 1 / IP20 construction is intended primarily for installation inside a suitable industrial electrical environment rather than direct outdoor exposure.

Consequently, enclosure location, environmental protection, airflow, electrical clearance, cable routing, and maintenance access should all be considered during installation planning.

10. Main Product Advantages

High-Power 600 V Motor Control

The 355 A output rating provides a substantial power-control capability for large industrial motors.

With ratings reaching 400 HP in Light Duty operation, the drive is suitable for applications where a smaller machine-level drive would not provide adequate current or power capacity.

The 600 V class also makes the drive appropriate for industrial electrical systems where 600 V three-phase power distribution is standard.

Flexible Duty Selection

The 400 HP LD / 350 HP ND / 300 HP HD rating structure provides flexibility.

Rather than choosing a drive based only on motor horsepower, engineers can select the appropriate duty classification based on the actual mechanical load profile.

This is particularly valuable for applications where acceleration torque, overload requirements, or cyclic loading can vary considerably.

Industrial-Scale Frame 8 Architecture

The Frame 8 construction provides a substantial power platform for large machinery.

It is appropriate for large electrical rooms, MCC-style installations, centralized drive rooms, and industrial control cabinets where physical space is available for a high-power drive system.

Integrated Network Capability

Embedded EtherNet/IP makes the drive well suited to PLC-based automation.

The drive can become part of the machine or plant control network instead of functioning only as a local speed controller.

This simplifies integration of drive status, speed reference, operating commands, diagnostics, and process information.

No-HIM Configuration for Centralized Control

The no-HIM configuration is useful where local operator control is not required.

In a large automated facility, the drive may be installed inside an electrical room while operators interact with the process through a supervisory HMI or control-room system.

This arrangement can reduce unnecessary local controls and produce a more standardized electrical installation.

Forced-Air Thermal Management

The air-cooled design provides a practical cooling method for high-power installations.

Compared with liquid-cooled architectures, forced-air cooling can simplify maintenance and infrastructure requirements when the electrical room and cabinet ventilation system are appropriately designed.

AC Input with Precharge

The precharge arrangement provides controlled energization of the drive’s DC-link circuitry.

This is an important characteristic for a high-power AC drive and contributes to a more controlled power-up sequence.

EMC Filtering

The EMC filter configuration supports installations where conducted electromagnetic interference needs to be managed as part of the overall electrical system design.

For industrial plants containing sensitive instrumentation, PLC equipment, communications equipment, and multiple variable-frequency drives, EMC considerations can be important for overall system reliability.

11. Typical Applications

Large Conveyor Systems

The 20G1ABE355AN0NNNNN is well suited to large conveyor systems used in mining, aggregate processing, material handling, bulk handling, and manufacturing.

Conveyors can require substantial torque during startup, especially when heavily loaded.

The PowerFlex 755 architecture allows the drive to control acceleration and speed while coordinating with the overall automation system.

Mining Equipment

Mining applications often involve large motors and mechanically demanding loads.

Examples include:

• Belt conveyors
• Crushers
• Material feeders
• Large fans
• Pumps
• Grinding-related equipment
• Bulk material handling systems

The 600 V, Frame 8 architecture provides the current and power capacity required for many large mining installations.

Pumps

Large process pumps and water-handling systems can benefit from variable-speed control.

Adjusting pump speed rather than simply throttling flow can provide better process control and can reduce unnecessary mechanical losses.

The drive’s network capability also makes it suitable for integration into pump-station automation systems.

Large Fans and Blowers

Large fans and blowers frequently operate for long periods and can consume substantial electrical power.

Variable-speed operation allows the process to adjust airflow according to demand.

Typical applications include industrial ventilation, combustion air, process exhaust, dust collection, and large HVAC-related industrial systems.

Crushers and Heavy Machinery

Crushers represent a demanding drive application because the mechanical load can change rapidly.

The drive’s higher-current architecture and heavy-duty rating capability make this class of drive suitable for applications where substantial motor torque is required.

Cement and Aggregate Processing

Cement plants and aggregate facilities often use large motors for conveyors, crushers, fans, pumps, mixers, and material-handling equipment.

The PowerFlex 755 platform is well suited to this type of centralized industrial drive architecture.

Process Machinery

Large mixers, process pumps, fans, extruders, material-handling machines, and other continuous-process equipment can use this type of drive when precise speed control and integration into a plant-wide automation system are required.

12. Installation Considerations

Because this is a large Frame 8 drive, installation planning is significantly more important than with a compact VFD.

The approximate overall dimensions are around 2100 mm high, 610 mm wide, and 600 mm deep for the 600 mm MCC-style configuration.

The approximate drive weight is around 540 kg.

The actual installation weight can change depending on configuration, packaging, option assemblies, wiring arrangements, and associated cabinet equipment.

The electrical room should therefore be designed for mechanical handling as well as normal maintenance.

A suitable lifting and positioning method should be considered before the drive arrives at the installation site.

Adequate front access should also be provided for inspection and maintenance.

The airflow path must remain unobstructed, and the surrounding environment should be controlled to avoid excessive dust, moisture, corrosive contaminants, or other conditions that can reduce the service life of the power electronics.

13. Lifecycle and Replacement Information

The 20G1ABE355AN0NNNNN is an older catalog configuration.

Its lifecycle status is discontinued, with the listed discontinuation date being June 30, 2024.

The direct replacement is 20G1ABE355JN0NNNNN.

The replacement retains the essential electrical configuration:

• 600 VAC
• Three-phase
• 355 A
• 400 HP Light Duty
• 350 HP Normal Duty
• 300 HP Heavy Duty
• Frame 8
• 600 mm deep MCC style
• Air cooled
• AC input with precharge
• No DC terminals
• No HIM
• No dynamic braking
• Filtered configuration

The primary catalog-level distinction of particular interest is the CM-jumper configuration. The older AN0 version is specified with the CM jumper removed, while the JN0 replacement is specified with the CM jumper installed as the preferred configuration.

For replacement projects, engineers should therefore verify the grounding, EMC, motor-cable, cabinet, and system requirements before treating the newer JN0 as a simple one-for-one physical substitution.

14. Five Recommended Models from the Same Series or Closely Related Range

The following models are closely related to the 20G1ABE355AN0NNNNN and are useful when selecting a replacement, neighboring power rating, or alternative operator-interface configuration.

The 355 A, 395 A, and 435 A models form a useful progression when the motor load is close to the boundary between drive sizes. The published 600 V selection data identifies the 395 A model at 450 HP LD / 400 HP ND / 350 HP HD and the 435 A model at 500 HP LD / 450 HP ND / 350 HP HD.

The JN0, JN2, and JN4 versions are particularly useful for comparing operator-interface requirements.

JN0 is the no-HIM configuration.

JN2 is the local/handheld enhanced LCD configuration.

JN4 is the door-mounted enhanced LCD configuration.

This makes the catalog family relatively straightforward to select according to the way operators and maintenance personnel need to interact with the drive.

15. Detailed Parameters of the Five Related Models

The dimensions and weights in this comparison should be used for preliminary engineering and space planning rather than as fabrication dimensions. The actual mechanical drawing should be used when designing the final enclosure, MCC lineup, lifting arrangement, or cable-entry system.

16. Five Popular Allen-Bradley Models

The following five models are commonly encountered Allen-Bradley drive models and provide a useful comparison across different PowerFlex product levels.

These models cover a broad range of applications, from compact machine drives to large industrial motor-control systems.

For a project centered around the 20G1ABE355AN0NNNNN, the most relevant comparison is generally with other PowerFlex 755 models rather than the smaller compact drive families.

17. Selection Guidance

When selecting a replacement or alternative for 20G1ABE355AN0NNNNN, the first item to verify is the motor’s actual full-load current.

The drive should not be selected solely by horsepower.

Motor voltage, motor current, duty cycle, acceleration requirements, ambient temperature, overload requirements, braking requirements, cable length, and installation environment all affect the correct drive selection.

For a motor that operates at approximately 350 HP under normal industrial loading, the 355 A PowerFlex 755 configuration is a logical starting point.

If the application has particularly severe starting torque or cyclic overload requirements, the Heavy Duty rating should be examined rather than using the Light Duty rating as the primary selection criterion.

If the motor load is close to the 355 A boundary, moving to the 395 A or 435 A model may provide additional operating margin.

18. Advantages Compared with a Basic General-Purpose VFD

The major advantage of the PowerFlex 755 architecture is not simply its output current.

Its value comes from the combination of high power, industrial networking, configurable control architecture, multiple feedback options, flexible drive control, and a scalable hardware platform.

A basic VFD can often provide simple speed control.

A PowerFlex 755 installation can become a much more integrated component of the automation system.

This distinction becomes particularly important in large manufacturing plants, mining systems, process plants, water facilities, cement plants, and material-handling installations where the drive is expected to exchange information continuously with the plant control system.

19. Engineering Summary

The 20G1ABE355AN0NNNNN is a high-power 600 V PowerFlex 755 AC drive designed for demanding industrial motor-control applications.

Its principal electrical rating is 355 A, with approximately 400 HP Light Duty, 350 HP Normal Duty, and 300 HP Heavy Duty capability.

The drive uses a Frame 8 architecture, 600 mm deep MCC-style Type 1/IP20 construction, forced-air cooling, AC input with precharge, EMC filtering, no dynamic braking, and a no-HIM configuration.

Its embedded EtherNet/IP capability makes it especially suitable for centralized PLC-based automation systems.

The no-HIM configuration is appropriate where local drive operation is not required and the machine or process is controlled from a central HMI, PLC, or supervisory system.

The large Frame 8 construction makes it suitable for major industrial installations, but it also means that mechanical handling, cabinet dimensions, ventilation, cable routing, and maintenance access must be planned carefully.

The original 20G1ABE355AN0NNNNN is discontinued, and 20G1ABE355JN0NNNNN is the direct replacement configuration. The replacement maintains the same basic 355 A / 600 V / Frame 8 power class while changing the CM-jumper configuration to the newer preferred arrangement.

For existing equipment maintenance, the AN0 catalog number remains important because the exact installed configuration matters when matching replacement components.

For new projects, the JN0 configuration is generally the more relevant model to evaluate.

In practical terms, the 20G1ABE355AN0NNNNN is best understood as a large industrial PowerFlex 755 drive for high-power 600 V motor applications where high current capacity, flexible duty ratings, network integration, centralized control, and industrial-grade construction are more important than compact physical size.