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Allen-Bradley 20G1ALD545AN0NNNNN PowerFlex 755 AC Drive

1. Product Introduction

The Allen-Bradley 20G1ALD545AN0NNNNN is a high-power PowerFlex 755 AC drive designed for large industrial motor-control applications.

It is a 480 VAC, three-phase, air-cooled variable-frequency drive with a rated current of 545 A. The drive uses Frame 8 construction and an 800 mm deep MCC-style mechanical configuration.

The model is designed for applications requiring substantial motor power, variable-speed operation, controlled acceleration and deceleration, and integration with an industrial automation system.

The 20G1ALD545AN0NNNNN is configured with embedded EtherNet/IP communication, AC input with precharge, no DC terminals, EMC filtering, no dynamic braking option, and a blank local operator interface configuration.

The drive provides different motor-duty ratings depending on the type of application. Its nominal ratings are 500 HP for Light Duty, 450 HP for Normal Duty, and 350 HP for Heavy Duty.

This makes the model suitable for a wide range of large industrial machines, including pumps, fans, conveyors, blowers, process machinery, material-handling systems, and other large motor-driven equipment.

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2. Brand and Product Series

Item	Information
Brand	Allen-Bradley
Product Series	PowerFlex 755
Product Family	PowerFlex 750-Series
Product Type	AC Variable Frequency Drive
Catalog Number	20G1ALD545AN0NNNNN
Drive Configuration	Air-Cooled PowerFlex 755 AC Drive
Primary Application	Large Industrial Motor Control
Voltage Class	480 VAC
Phase	Three Phase
Frame	Frame 8
Cooling	Forced Air / Air Cooled
Communication	Embedded EtherNet/IP

The PowerFlex 755 series is designed for industrial motor applications where a higher level of power, control flexibility, communication capability, and application functionality is required.

The 20G1ALD545AN0NNNNN represents one of the large-current configurations within the 480 VAC range.

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3. Main Technical Specifications

Parameter	Specification
Model	20G1ALD545AN0NNNNN
Brand	Allen-Bradley
Series	PowerFlex 755
Product Type	AC Drive / Variable Frequency Drive
Input Voltage Class	480 VAC
Phase	3 Phase
Rated Current	545 A
Light-Duty Rating	500 HP
Normal-Duty Rating	450 HP
Heavy-Duty Rating	350 HP
Frame Size	Frame 8
Cooling Method	Forced Air
Input Type	AC Input with Precharge
DC Input Terminals	None
Communication	Embedded EtherNet/IP
Enclosure	Type 1 / IP20
Mechanical Construction	800 mm Deep MCC Style
EMC Configuration	EMC Filter
CM Configuration	CM Jumper Removed
Dynamic Braking	None
HIM Configuration	Blank / No HIM
Local Keypad	Not included in this configuration
Drive Architecture	Industrial AC Variable-Speed Drive
Mounting	Fixed Industrial Installation
Typical Motor Range	Large Industrial Motors
Depth	800 mm
Overall Width	Configuration-dependent
Overall Height	Configuration-dependent
Approximate Planning Weight	About 500–650 kg
Weight Unit	kg

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4. Electrical Rating

The 20G1ALD545AN0NNNNN is designed for a 480 VAC three-phase industrial power system.

Its 545 A current rating places it firmly in the large-drive category.

A drive of this size is normally applied to large industrial motors where compact variable-frequency drives are not capable of supplying the required motor current.

The 480 VAC three-phase configuration is suitable for large industrial electrical systems and motor-control installations.

When selecting the drive, the motor’s actual rated current should be compared with the drive’s applicable duty rating.

Horsepower alone should not be used as the only selection criterion.

Motor voltage, motor full-load current, overload requirements, acceleration requirements, ambient temperature, load characteristics, braking requirements, and installation conditions all need to be considered.

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5. Motor Power Ratings

One of the important characteristics of the 20G1ALD545AN0NNNNN is its multiple-duty rating.

Duty	Motor Rating
Light Duty	500 HP
Normal Duty	450 HP
Heavy Duty	350 HP

These three ratings allow the same drive platform to be evaluated against different mechanical load conditions.

The Light Duty rating is associated with applications where the required overload capability is relatively moderate.

The Normal Duty rating is suitable for many general industrial applications where the motor operates under a typical industrial load profile.

The Heavy Duty rating is lower in horsepower because heavy-duty applications generally require greater current and overload capability from the drive.

For final selection, the motor nameplate current and actual mechanical load should always take priority over a simple horsepower comparison.

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6. 545 A Output Capability

The 545 A rating is one of the defining features of this model.

A 545 A industrial drive is intended for large motors and substantial mechanical loads.

Typical equipment may include:

• Large pumps
• Large centrifugal fans
• Industrial blowers
• Heavy conveyors
• Process machinery
• Large compressors
• Material-handling systems
• Large mixers
• Industrial production machinery
• Large rotating equipment

The high-current design also makes the model useful where a machine requires substantial starting torque, controlled acceleration, or variable-speed operation.

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7. 480 VAC Three-Phase Operation

The drive is designed for 480 VAC three-phase power.

Three-phase AC power is widely used for large industrial motor systems because it provides an efficient means of supplying substantial motor power.

The 20G1ALD545AN0NNNNN is therefore well suited to industrial facilities with 480 VAC motor-control distribution.

The power system should be properly coordinated with the drive’s current requirements, branch protection, disconnect equipment, grounding system, conductor arrangement, and motor characteristics.

Because this is a high-power drive, electrical installation should be treated as a complete system-design task rather than a simple drive replacement.

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8. AC Input with Precharge

The drive uses an AC input with precharge configuration.

Precharge is an important function in high-power variable-frequency drives.

When a large drive is energized, its internal DC-link capacitors require controlled charging.

The precharge arrangement helps manage the initial charging process and reduces the stress associated with energizing the drive’s DC-link system.

This is particularly relevant for large Frame 8 equipment because the energy storage system is significantly larger than that found in compact drives.

The specified model does not use DC input terminals.

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9. Frame 8 Construction

The 20G1ALD545AN0NNNNN uses Frame 8 construction.

Frame 8 is intended for large industrial drive applications.

The physical size of this type of drive requires more planning than a compact wall-mounted inverter.

Important mechanical considerations include:

• Cabinet dimensions
• Electrical-room space
• Service access
• Cable entry
• Cable bending radius
• Airflow
• Heat dissipation
• Lifting equipment
• Floor loading
• Transportation
• Maintenance clearance

Frame 8 construction is particularly suitable for large fixed industrial installations.

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10. 800 mm Deep MCC-Style Construction

The specified configuration uses an 800 mm deep MCC-style enclosure arrangement.

The 800 mm depth should be incorporated into the mechanical layout at the beginning of the project.

The actual space required for installation will normally be greater than the enclosure depth alone because engineers also need to allow for:

• Cable entry
• Cable bending
• Door operation
• Service access
• Ventilation
• Component replacement
• Maintenance activities
• Adjacent equipment

The 800 mm depth is therefore an important equipment-room planning dimension.

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11. Dimensions and Weight

Because the 20G1ALD545AN0NNNNN is a large Frame 8 configuration, its physical size and weight are substantially greater than compact PowerFlex drives.

Mechanical Parameter	Specification
Model	20G1ALD545AN0NNNNN
Frame	Frame 8
Enclosure Style	MCC Style
Depth	800 mm
Width	Configuration-dependent
Height	Configuration-dependent
Installation Type	Fixed Industrial Installation
Approximate Planning Weight	500–650 kg
Weight	kg
Final Shipping Weight	Configuration-dependent
Final Installed Weight	Configuration-dependent
Cabinet Space	Large Industrial Electrical Installation
Service Clearance	Required
Ventilation Clearance	Required

The 800 mm depth is the important mechanical characteristic associated with this MCC-style configuration.

The exact overall width and height should be taken from the final mechanical configuration supplied for the project.

The approximately 500–650 kg weight range should be regarded as a preliminary engineering estimate for space and handling planning rather than a final lifting specification.

For crane selection, floor loading, transportation, foundation design, or cabinet structural calculations, the actual equipment-specific weight should be used.

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12. Embedded EtherNet/IP

The 20G1ALD545AN0NNNNN includes embedded EtherNet/IP communication.

This allows the drive to participate directly in an industrial Ethernet control architecture.

A networked drive can exchange information with a control system, including:

• Start commands
• Stop commands
• Speed references
• Frequency references
• Drive status
• Motor current
• Operating conditions
• Fault information
• Warning information
• Diagnostic information
• Parameter information

EtherNet/IP integration is especially useful when several large drives are installed across the same production system.

Instead of treating the drive as an independent device, the drive can become part of a centralized control architecture.

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13. Blank / No HIM Configuration

The AN0 configuration is specified with a blank display arrangement, meaning that a standard local HIM is not included in this particular catalog configuration.

This configuration is useful when the drive is intended to be controlled primarily through an automation system or when a local operator interface is not required.

A no-HIM configuration can also be appropriate when the drive is installed inside a larger control system where operation, monitoring, and parameter management are handled from a central control station.

However, during commissioning and maintenance, engineers should consider how local parameter access and troubleshooting will be performed.

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14. EMC Filter Configuration

The drive includes an EMC filter configuration.

EMC performance is particularly important for high-power variable-frequency drives.

The switching operation of an AC drive can produce high-frequency electrical components that may interact with nearby control wiring, instrumentation, communication systems, or other electrical equipment.

A properly designed installation should consider:

• Grounding
• Shielding
• Cabinet bonding
• Motor cable construction
• Cable routing
• Separation of power and control cables
• Communication cable routing
• Motor-frame grounding
• Electrical-room layout

The EMC filter is therefore only one part of the complete EMC design.

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15. CM Jumper Removed

The specified configuration uses a removed CM jumper arrangement.

This configuration should be evaluated together with the overall grounding system and motor installation.

The correct common-mode and grounding arrangement can depend on the motor, cable system, electrical distribution system, cabinet construction, and application environment.

For large industrial installations, grounding and EMC design should be completed as part of the overall electrical engineering process.

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16. Dynamic Braking

The 20G1ALD545AN0NNNNN is configured without dynamic braking.

This is an important consideration for applications with high inertia or frequent deceleration.

When a motor decelerates, mechanical energy can be transferred back into the electrical system.

Applications with significant regenerative energy may require a dedicated braking strategy.

Examples include:

• High-inertia fans
• Large conveyors
• Certain hoisting systems
• Unwinding machinery
• Rapid cycling equipment
• Large rotating machines
• Machinery requiring very short stopping times

The required braking arrangement should be determined from the motor, load inertia, operating speed, deceleration time, and number of braking cycles.

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17. Air-Cooled Construction

The 20G1ALD545AN0NNNNN uses forced-air cooling.

A large 545 A drive produces significant heat during operation.

Adequate ventilation is therefore essential.

The installation should maintain a suitable airflow path and prevent excessive heat accumulation.

Important maintenance items include:

• Cooling fans
• Air passages
• Filters where applicable
• Cabinet ventilation
• Dust accumulation
• Ambient temperature
• Heat transfer
• Service access

A dirty or restricted cooling path can increase internal temperature and may reduce operating reliability.

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18. Type 1 / IP20 Enclosure

The drive uses a Type 1 / IP20 enclosure configuration.

This enclosure classification is intended for controlled industrial electrical environments.

It is not a sealed enclosure designed for direct exposure to water or washdown conditions.

If the drive is installed in an environment containing excessive moisture, dust, oil mist, corrosive chemicals, or frequent washdown operations, additional enclosure and environmental protection may be necessary.

The surrounding installation should be designed to provide the environmental conditions required by the equipment.

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19. Typical Applications

Large Industrial Pumps

The drive can be used for large pumping systems where motor speed needs to be adjusted according to process demand.

Typical applications include:

• Water circulation
• Process pumping
• Cooling systems
• Industrial fluid transfer
• Large irrigation systems
• Industrial utilities

Variable-speed control can provide better process flexibility than fixed-speed operation.

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Large Fans and Blowers

Large fans and blowers are common applications for high-power AC drives.

The drive can adjust motor speed according to actual airflow requirements.

Potential applications include:

• Industrial ventilation
• Process exhaust
• Cooling systems
• Air-handling equipment
• Large combustion-air systems
• Industrial dust collection

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Heavy Conveyors

Large conveyors often require controlled acceleration and deceleration.

The drive can provide adjustable speed and controlled starting.

This can help reduce mechanical shock in large conveyor systems.

Applications may include:

• Bulk material handling
• Manufacturing lines
• Mining-related equipment
• Warehouse systems
• Industrial logistics
• Heavy production machinery

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Large Compressors

The 545 A current capacity makes the model suitable for evaluation in large compressor applications where variable-speed motor control is appropriate.

The compressor manufacturer’s operating requirements should be considered carefully because compressor loads can vary significantly by design.

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Process Machinery

Large industrial process machines often require coordinated speed control.

The PowerFlex 755 platform can be integrated into centralized automation systems to provide motor control together with process monitoring.

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Material-Handling Equipment

Large material-handling systems can benefit from controlled motor acceleration, adjustable operating speed, and network communication.

The drive can be used as part of a larger automated material-handling architecture.

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20. Main Product Advantages

High Current Capacity

The 545 A output capability makes the model suitable for large industrial motors.

It is designed for applications that require substantially more current than compact industrial drives can provide.

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High Motor Power Capability

The 500 HP Light Duty rating and 450 HP Normal Duty rating allow the drive to serve large motor applications.

The Heavy Duty rating of 350 HP provides a reference for more demanding load conditions requiring higher overload capability.

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Multiple Duty Ratings

The three duty categories make the drive adaptable to different load profiles.

This provides greater flexibility during motor and application selection.

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Embedded EtherNet/IP

Integrated EtherNet/IP communication allows the drive to be connected directly to an industrial Ethernet architecture.

This is useful for centralized monitoring, control, diagnostics, and data collection.

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Large Frame 8 Construction

The Frame 8 design is intended for large industrial installations.

It provides a physical and electrical platform suitable for high-current motor-control applications.

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800 mm MCC-Style Construction

The MCC-style arrangement makes the drive suitable for large electrical rooms and industrial motor-control installations.

It can be incorporated into larger electrical equipment layouts where mechanical organization and service access are important.

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Air Cooling

Forced-air cooling is a practical approach for large drive installations.

The design allows the drive’s heat to be managed through controlled airflow.

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Local-Control-Free Configuration

The no-HIM configuration can be advantageous in centralized automation systems where operators normally interact with the drive through a supervisory control interface.

This can help keep the local drive configuration simpler.

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EMC Filter

The EMC-filtered configuration supports installations where electromagnetic compatibility needs to be considered carefully.

This is particularly relevant in industrial facilities containing instrumentation, networked controllers, sensors, and communication systems.

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21. Five Recommended Same-Series or Closely Related Models

The following five models are closely related PowerFlex 755 configurations and are useful for comparison with the 20G1ALD545AN0NNNNN.

Model	Series	Voltage	Current	LD Rating	ND Rating	HD Rating	Frame	Cooling	Depth	HIM
20G1ALD545AN2NNNNN	PowerFlex 755	480 VAC	545 A	500 HP	450 HP	350 HP	8	Air Cooled	800 mm	Enhanced LCD HIM
20G1ALD545AN4NNNNN	PowerFlex 755	480 VAC	545 A	500 HP	450 HP	350 HP	8	Air Cooled	800 mm	HIM configuration
20G1ALD545JN0NNNNN	PowerFlex 755	480 VAC	545 A	500 HP	450 HP	350 HP	8	Air Cooled	800 mm	No-HIM configuration
20G1ALD617AN0NNNNN	PowerFlex 755	480 VAC	617 A	600 HP	500 HP	400 HP	8	Air Cooled	800 mm	No HIM
20G1ALD710AN0NNNNN	PowerFlex 755	480 VAC	710 A	650 HP	600 HP	450 HP	8	Air Cooled	800 mm	No HIM

These models provide several practical alternatives.

The first three are especially close because they maintain the 545 A electrical class while changing the operator-interface or configuration arrangement.

The 617 A and 710 A models move into higher current capacities and are more appropriate when the motor or application requires additional current capability.

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22. Related Model Comparison

Model	Main Difference	Current	LD	ND	HD	Frame	Depth	Approx. Planning Weight
20G1ALD545AN0NNNNN	Base no-HIM configuration	545 A	500 HP	450 HP	350 HP	8	800 mm	500–650 kg
20G1ALD545AN2NNNNN	Enhanced LCD HIM	545 A	500 HP	450 HP	350 HP	8	800 mm	500–650 kg
20G1ALD545AN4NNNNN	Alternative HIM configuration	545 A	500 HP	450 HP	350 HP	8	800 mm	500–650 kg
20G1ALD545JN0NNNNN	Alternative configuration, no HIM	545 A	500 HP	450 HP	350 HP	8	800 mm	500–650 kg
20G1ALD617AN0NNNNN	Higher current capacity	617 A	600 HP	500 HP	400 HP	8	800 mm	Configuration-dependent
20G1ALD710AN0NNNNN	Higher current capacity	710 A	650 HP	600 HP	450 HP	8	800 mm	Configuration-dependent

The approximate weight values are intended for preliminary planning only.

The final equipment configuration should be used for lifting, shipping, floor-loading, and structural calculations.

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23. Five Same-Brand Popular Models

The following models represent other commonly encountered Allen-Bradley PowerFlex drive configurations across different product series.

Model	Series	Voltage Class	Approximate Application Range	Main Application	Size Category
25B-D010N104	PowerFlex 525	480 VAC Class	Small motor applications	General machinery, pumps, fans, conveyors	Compact
25C-D010N103	PowerFlex 527	480 VAC Class	Small/medium machine applications	Machine automation and integrated control	Compact
20F11NC2P1JA0NNNNN	PowerFlex 753	480 VAC Class	Industrial motor control	Pumps, fans, conveyors, machinery	Industrial
20F11NC8P0JA0NNNNN	PowerFlex 753	480 VAC Class	Higher-power industrial applications	Large machinery and process systems	Industrial
20G1ALD545AN0NNNNN	PowerFlex 755	480 VAC	545 A / large motor range	Large industrial motor control	Frame 8

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24. PowerFlex 525 Comparison

The PowerFlex 525 is a much smaller drive platform compared with the 20G1ALD545AN0NNNNN.

It is generally more appropriate for compact machines and smaller motor applications.

Typical uses include:

• Small conveyors
• Pumps
• Fans
• Packaging machines
• Machine tools
• Small material-handling systems

The 20G1ALD545AN0NNNNN is intended for a completely different power range and physical installation category.

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25. PowerFlex 527 Comparison

The PowerFlex 527 is designed for machine-control applications where close integration between the drive and automation controller is important.

It is typically considered for machine-level applications rather than very large Frame 8 industrial motor installations.

The 20G1ALD545AN0NNNNN provides substantially greater current capacity and is intended for large industrial motor systems.

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26. PowerFlex 753 Comparison

The PowerFlex 753 is a flexible industrial AC drive platform used in many general industrial applications.

It can be considered for applications such as:

• Pumps
• Fans
• Conveyors
• Process machinery
• Material handling
• Industrial production systems

The PowerFlex 755 family is positioned for more advanced and larger-scale applications, with the 20G1ALD545AN0NNNNN representing a high-current Frame 8 configuration.

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27. PowerFlex 755 Family

The PowerFlex 755 family provides a broad range of industrial AC drive configurations.

The 20G1ALD545AN0NNNNN is a 480 VAC, 545 A, Frame 8 configuration.

The same family includes closely related current ratings such as:

• 430 A
• 485 A
• 545 A
• 617 A
• 710 A
• 740 A

These different current levels allow engineers to match drive capacity more closely to motor and load requirements.

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28. Application Selection Guide

Application Requirement	Recommended Consideration
Large pump	20G1ALD545AN0NNNNN
Large industrial fan	20G1ALD545AN0NNNNN
Heavy conveyor	20G1ALD545AN0NNNNN
Large blower	20G1ALD545AN0NNNNN
Large compressor	20G1ALD545AN0NNNNN, subject to compressor requirements
Higher motor current requirement	20G1ALD617AN0NNNNN
Even higher current requirement	20G1ALD710AN0NNNNN
Local LCD operator interface required	20G1ALD545AN2NNNNN
No local HIM required	20G1ALD545AN0NNNNN
Smaller machine	25B-D010N104
General industrial drive	20F11NC2P1JA0NNNNN

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29. Installation Considerations

Because the 20G1ALD545AN0NNNNN is a large Frame 8 drive, the installation should be planned from both the electrical and mechanical perspectives.

The following items should be considered before installation:

Electrical Distribution

The incoming power system must be suitable for the drive’s voltage and current requirements.

Branch protection and disconnect equipment should be selected as part of the complete electrical system.

Motor Cable

The motor cable should be selected according to the motor current, installation method, cable length, environmental conditions, and applicable electrical requirements.

Grounding

A properly engineered grounding system is essential.

EMC

Power cables, control wiring, and network cables should be routed in a manner that minimizes unnecessary electrical interference.

Cooling

The electrical room or cabinet must provide sufficient airflow for the forced-air cooling system.

Mechanical Space

The 800 mm deep configuration must be incorporated into the cabinet or MCC layout.

Additional clearance may be required for cable routing and maintenance.

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30. Maintenance Considerations

Large industrial drives require regular maintenance planning.

Typical maintenance activities include:

• Checking cooling fans
• Inspecting air passages
• Cleaning accumulated dust
• Checking electrical connections
• Inspecting grounding connections
• Checking motor cables
• Checking communication connections
• Reviewing drive fault history
• Monitoring abnormal operating conditions
• Inspecting the cabinet environment

Because the drive is configured without a standard local HIM, maintenance personnel should also have an appropriate method for accessing drive status and parameters through the overall control architecture or suitable service interface.

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31. Benefits of a No-HIM Configuration

The no-HIM configuration can be useful in centralized automation systems.

For example, a production line may have a central operator station that controls several drives.

In such an installation, operators may not need to access each individual drive locally.

The drive can remain inside the electrical enclosure while commands and monitoring functions are handled through the automation network.

This configuration can provide a clean and centralized machine-control architecture.

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32. Benefits of Embedded Networking

A network-connected drive can provide more than simple start and stop control.

Depending on the control architecture, the automation system can monitor:

• Drive running status
• Motor current
• Speed
• Frequency
• Fault conditions
• Warning conditions
• Operating parameters
• Diagnostic information

This can make maintenance easier because operating information can be made available at a central operator or maintenance station.

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33. Large-Motor Application Advantages

For a large motor application, the 20G1ALD545AN0NNNNN offers several useful characteristics in one configuration:

• 545 A current capacity
• 480 VAC operation
• Three-phase power
• Frame 8 construction
• 500 HP Light Duty capability
• 450 HP Normal Duty capability
• 350 HP Heavy Duty capability
• Embedded EtherNet/IP
• Forced-air cooling
• AC input with precharge
• EMC filtering
• MCC-style construction

These characteristics make it suitable for demanding industrial motor-control systems.

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34. Product Advantages Summary

Advantage	Practical Benefit
545 A Current Capacity	Suitable for large industrial motors
500 HP LD Rating	Supports high-power Light Duty applications
450 HP ND Rating	Suitable for substantial Normal Duty loads
350 HP HD Rating	Provides a Heavy Duty application reference
480 VAC Three Phase	Suitable for large industrial power systems
Frame 8	Designed for high-power industrial installations
800 mm MCC Style	Suitable for large electrical-room layouts
Embedded EtherNet/IP	Direct industrial network integration
Air Cooling	Practical thermal management for high-power equipment
AC Precharge	Suitable for large AC-input drive architecture
EMC Filter	Supports electromagnetic compatibility design
No HIM	Suitable for centralized automation architectures
No Dynamic Braking	Simple configuration where regenerative braking is not required

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35. Detailed Physical Specification

Physical Item	Specification
Model	20G1ALD545AN0NNNNN
Frame Size	Frame 8
Enclosure Type	Type 1 / IP20
Construction	800 mm Deep MCC Style
Cooling	Forced Air
Depth	800 mm
Width	Final configuration dependent
Height	Final configuration dependent
Approximate Planning Weight	500–650 kg
Weight	kg
Installation Orientation	Fixed industrial installation
Cabinet Integration	Suitable for large MCC/electrical-room installation
Service Space	Required
Cable Space	Required
Airflow Space	Required

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36. Technical Parameter Summary

Category	Specification
Catalog Number	20G1ALD545AN0NNNNN
Brand	Allen-Bradley
Series	PowerFlex 755
Product	PowerFlex Air-Cooled 755 AC Drive
Input Voltage	480 VAC
Phase	3 Phase
Rated Current	545 A
Light Duty	500 HP
Normal Duty	450 HP
Heavy Duty	350 HP
Frame	8
Cooling	Air Cooled
Input Configuration	AC Input with Precharge
DC Terminals	None
Communication	Embedded EtherNet/IP
Enclosure	Type 1 / IP20
Mechanical Style	800 mm Deep MCC Style
EMC	EMC Filter
CM Jumper	Removed
Dynamic Braking	None
HIM	Blank / No HIM
Depth	800 mm
Width	Configuration-dependent
Height	Configuration-dependent
Approx. Planning Weight	500–650 kg
Weight Unit	kg
Main Application	Large Industrial AC Motor Control

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37. Final Product Description

The Allen-Bradley 20G1ALD545AN0NNNNN is a high-current PowerFlex 755 AC drive designed for large industrial motor-control applications.

With a 545 A rating and 480 VAC three-phase configuration, it is intended for substantial motor loads where precise speed control, controlled acceleration, industrial networking, and high-power electrical performance are required.

The drive provides 500 HP Light Duty, 450 HP Normal Duty, and 350 HP Heavy Duty motor ratings, allowing it to be evaluated across different load conditions.

Its Frame 8 construction and 800 mm deep MCC-style design make it suitable for large industrial electrical installations.

The embedded EtherNet/IP interface is useful for integration into centralized automation systems, while the no-HIM configuration is well suited to installations where operators and maintenance personnel interact with the drive primarily through a central control system.

The air-cooled construction provides a practical cooling arrangement for a high-power drive, while the EMC-filtered configuration supports system-level electrical compatibility planning.

The 20G1ALD545AN0NNNNN is particularly suitable for large pumps, industrial fans, blowers, conveyors, process machinery, material-handling equipment, compressors, and other high-power rotating machinery.

Its principal strengths are its high current capacity, large motor-power capability, industrial Frame 8 construction, embedded network communication, flexible duty ratings, and suitability for centralized automation.

For final engineering, the motor’s actual nameplate current, load profile, overload requirement, acceleration and deceleration characteristics, regenerative energy, environmental conditions, electrical distribution, grounding system, cable arrangement, cabinet dimensions, and final equipment weight should all be evaluated together.

The 800 mm depth and preliminary 500–650 kg weight range are useful for initial planning, but the final mechanical configuration should be used for equipment transportation, lifting, structural calculations, and installation work.

In summary, the 20G1ALD545AN0NNNNN is a large-frame, 545 A PowerFlex 755 AC drive intended for demanding industrial motor-control systems where high power, reliable speed control, network integration, and centralized automation are important.