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Allen-Bradley 20G1ALD545AN2NNNNN PowerFlex 755 AC Drive

1. Product Overview

The Allen-Bradley 20G1ALD545AN2NNNNN is a high-power PowerFlex 755 AC variable frequency drive designed for large industrial motor-control applications.

This model belongs to the PowerFlex 755 series and is configured for 480 VAC three-phase operation. It provides a 545 A current class and is intended for large motors and demanding industrial machinery.

The drive uses Frame 8 construction and an 800 mm deep MCC-style mechanical configuration. Its forced-air cooling system is designed for high-power industrial operation, while embedded EtherNet/IP provides a practical way to integrate the drive into a modern automation network.

The model is particularly suitable for applications where a large motor requires adjustable speed, controlled acceleration, controlled deceleration, centralized monitoring, and integration with a plant-level or machine-level automation system.

The 20G1ALD545AN2NNNNN also differs from the no-HIM version by including an enhanced LCD full-numeric HIM configuration. This gives maintenance and commissioning personnel a convenient local interface for setup, monitoring, diagnostics, and parameter access.

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2. Brand and Product Series

Item	Specification
Brand	Allen-Bradley
Product Series	PowerFlex 755
Product Family	PowerFlex 750-Series
Product Type	AC Variable Frequency Drive
Model	20G1ALD545AN2NNNNN
Drive Configuration	Air-Cooled PowerFlex 755
Application Category	Large Industrial Motor Control
Voltage Class	480 VAC
Phase	3 Phase
Frame	Frame 8
Cooling	Forced Air
Communication	Embedded EtherNet/IP
Operator Interface	Enhanced LCD Full Numeric HIM

The PowerFlex 755 series is designed for industrial applications that require more than basic motor speed control.

The platform is suitable for large machinery, process equipment, material-handling systems, pumps, fans, conveyors, compressors, and other high-power motor-driven equipment.

The 20G1ALD545AN2NNNNN represents a high-current configuration within this product family.

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3. Main Technical Parameters

Parameter	Specification
Model	20G1ALD545AN2NNNNN
Brand	Allen-Bradley
Series	PowerFlex 755
Product Type	AC Drive / Variable Frequency Drive
Rated Input Voltage	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 / Air Cooled
Input Configuration	AC Input with Precharge
DC Terminals	None
Communication	Embedded EtherNet/IP
Enclosure	Type 1 / IP20
Mechanical Construction	800 mm Deep MCC Style
EMC Configuration	Filtered
CM Jumper	Removed
Dynamic Braking	None
HIM Configuration	Enhanced LCD Full Numeric
Local Operator Interface	Included
Main Application	Large Industrial Motor Control
Installation	Fixed Industrial Installation
Depth	800 mm
Width	Configuration-dependent
Height	Configuration-dependent
Approximate Planning Weight	Approximately 500–650 kg
Weight Unit	kg

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4. Electrical Characteristics

The 20G1ALD545AN2NNNNN is designed for a 480 VAC three-phase industrial power system.

With a 545 A current rating, this is a large industrial drive rather than a compact machine-level inverter.

The high current capacity allows the drive to control large motors used in industrial equipment where substantial torque and power are required.

The 480 VAC three-phase configuration is well suited to large industrial electrical systems.

For engineering selection, the motor nameplate current should be checked carefully against the drive rating. Motor horsepower is useful as a reference, but current, duty cycle, overload requirement, acceleration profile, and environmental conditions are equally important.

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5. Motor Power Ratings

The model provides different motor horsepower ratings depending on the operating-duty classification.

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

The three ratings reflect the different thermal and overload demands associated with different applications.

A relatively moderate load profile can be evaluated against the Light Duty rating.

A general industrial load can be evaluated against the Normal Duty rating.

A demanding application with significant overload requirements should be evaluated against the Heavy Duty rating.

The actual motor current and load characteristics should always be used for final drive selection.

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6. 545 A Current Capacity

The 545 A rating is one of the most important characteristics of this model.

A drive in this current range is intended for large industrial motors and equipment.

Typical equipment may include:

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

The high current capacity also provides the electrical capacity required for large motor applications where smaller drive platforms would not be appropriate.

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7. 480 VAC Three-Phase Power

The drive is designed around a 480 VAC three-phase power system.

Three-phase 480 VAC distribution is commonly used for large industrial motors.

At this power level, the incoming electrical system must be considered as part of the complete installation.

Important engineering considerations include:

• Incoming feeder capacity
• Branch protection
• Disconnect equipment
• Grounding
• Cable selection
• Cable termination
• Short-circuit characteristics
• Motor requirements
• Cabinet construction
• Heat dissipation

The drive should therefore be selected as part of the complete motor-control system rather than as an isolated component.

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8. AC Input with Precharge

The 20G1ALD545AN2NNNNN uses an AC input with precharge configuration.

Precharge is important in a large variable-frequency drive because the internal DC-link system contains substantial capacitance.

When the drive is energized, the precharge system manages the initial charging process.

This helps control the initial electrical stress associated with energizing the DC-link capacitors.

For a large Frame 8 drive, this is an important part of the overall power-conversion architecture.

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9. No DC Terminals

The specified configuration does not use DC input terminals.

The drive is therefore intended primarily as an AC-input configuration rather than as a drive that receives external DC bus power through dedicated DC input terminals.

This is useful for conventional industrial installations where the drive receives power directly from an AC distribution system.

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10. Frame 8 Construction

The 20G1ALD545AN2NNNNN uses Frame 8 construction.

Frame 8 indicates that the drive is designed for large industrial power levels and requires a substantial installation area.

Compared with smaller variable-frequency drives, this model requires greater consideration of:

• Cabinet dimensions
• Electrical-room layout
• Cable routing
• Cable bending radius
• Cooling airflow
• Service access
• Maintenance space
• Transportation
• Lifting
• Floor loading

The large-frame construction is particularly appropriate for fixed industrial installations.

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11. 800 mm Deep MCC-Style Construction

The model uses an 800 mm deep MCC-style configuration.

The 800 mm depth is an important mechanical specification when planning the installation.

The actual installation footprint should not be based on depth alone.

Additional space may be required for:

• Power cable routing
• Control wiring
• Network cables
• Door movement
• Service access
• Component replacement
• Ventilation
• Maintenance

For cabinet design and electrical-room planning, the final mechanical drawing should be used to confirm the complete width, height, mounting arrangement, and service clearances.

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12. Dimensions and Weight

The 20G1ALD545AN2NNNNN is a large Frame 8 drive, so mechanical planning is important.

Mechanical Parameter	Specification
Model	20G1ALD545AN2NNNNN
Frame	Frame 8
Construction	MCC Style
Depth	800 mm
Width	Configuration-dependent
Height	Configuration-dependent
Cooling	Forced Air
Installation Type	Fixed Industrial Installation
Approximate Planning Weight	500–650 kg
Weight	kg
Final Shipping Weight	Configuration-dependent
Final Installed Weight	Configuration-dependent
Service Clearance	Required
Cable Space	Required
Ventilation Space	Required

The 800 mm depth is the primary mechanical dimension associated with the specified MCC-style configuration.

The final overall width and height should be confirmed against the exact mechanical configuration supplied for the installation.

The 500–650 kg range is intended as a preliminary planning estimate for equipment handling and layout.

It should not be treated as the final certified shipping or lifting weight.

For cranes, lifting devices, floor-loading calculations, transportation, and structural design, the actual supplied equipment weight should be used.

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13. Embedded EtherNet/IP

One of the major advantages of the PowerFlex 755 platform is its integrated EtherNet/IP communication capability.

The 20G1ALD545AN2NNNNN can therefore be incorporated into an industrial Ethernet control architecture.

The drive can exchange information such as:

• Run status
• Stop status
• Speed reference
• Frequency reference
• Output current
• Operating condition
• Fault status
• Warning information
• Diagnostic information
• Parameter information

This is especially useful in factories where multiple drives are connected to a central automation system.

Instead of operating as an isolated device, the drive can become an active part of the overall machine or production-line control architecture.

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14. Enhanced LCD Full Numeric HIM

The AN2 configuration includes an enhanced LCD full-numeric HIM.

The HIM provides local access to drive operation and configuration.

This is especially useful during commissioning.

Technicians can use the local interface for activities such as:

• Initial drive setup
• Motor parameter configuration
• Speed reference testing
• Direction testing
• Parameter adjustment
• Fault investigation
• Warning review
• Status monitoring
• Troubleshooting
• Maintenance

The local interface is particularly valuable for large industrial drives because maintenance personnel can work directly at the equipment.

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15. HIM Configuration Advantage

Compared with a no-HIM configuration, the 20G1ALD545AN2NNNNN provides a more convenient local service interface.

This can reduce the need for technicians to rely exclusively on a remote control system during commissioning.

For a large machine, the local HIM can be useful when the control system is not yet fully commissioned.

It can also help during troubleshooting when technicians need to inspect drive parameters directly.

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16. EMC Filter

The drive is configured with EMC filtering.

Electromagnetic compatibility is particularly important in large variable-frequency drive installations.

High-power switching can create electrical noise that may affect nearby:

• Sensors
• Instrumentation
• Controllers
• Communication systems
• Feedback circuits
• Network cables
• Other electronic equipment

The EMC filter should be considered together with proper:

• Grounding
• Shielding
• Cable routing
• Cabinet bonding
• Motor-frame grounding
• Power/control cable separation

Good EMC performance depends on the complete installation rather than on the drive alone.

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17. CM Jumper Removed

The specified configuration includes a removed CM jumper arrangement.

This setting should be evaluated together with the electrical grounding system and motor installation.

Common-mode behavior can depend on:

• Motor construction
• Motor cable type
• Cable length
• Grounding system
• Electrical distribution arrangement
• Cabinet construction
• Installation environment

The CM configuration should therefore be considered as part of the complete drive installation.

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18. Dynamic Braking Configuration

The model is configured without dynamic braking.

This is important when evaluating applications with high inertia or frequent deceleration.

During deceleration, a motor can return energy to the drive’s DC bus.

Applications that require rapid stopping may therefore require a dedicated braking strategy.

Examples include:

• Large high-inertia fans
• Rapid-cycle conveyors
• Certain hoisting systems
• Unwinding machines
• High-speed rotating equipment
• Large centrifuge-type machinery
• Machines requiring short stopping times

The braking requirements should be calculated from the motor power, load inertia, operating speed, deceleration time, and braking frequency.

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19. Forced-Air Cooling

The 20G1ALD545AN2NNNNN uses forced-air cooling.

At 545 A, the drive can generate significant heat during operation.

The cooling system therefore requires adequate airflow.

The installation should prevent excessive heat accumulation around the drive.

Important considerations include:

• Airflow direction
• Ventilation openings
• Cooling fans
• Cabinet temperature
• Ambient temperature
• Dust accumulation
• Air passage cleanliness
• Maintenance access

Regular inspection of the cooling system is important for long-term operation.

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20. Type 1 / IP20 Enclosure

The specified drive configuration uses Type 1 / IP20 protection.

This type of enclosure is intended for controlled industrial electrical environments.

It should not be treated as a sealed outdoor or washdown enclosure.

If the drive is installed in an environment with significant:

• Water
• Humidity
• Dust
• Oil mist
• Chemical contamination
• Corrosive substances

additional environmental protection may be required.

The surrounding electrical enclosure and installation environment should be designed appropriately.

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21. Typical Applications

Large Pumping Systems

The drive is suitable for evaluating large pump applications where variable-speed operation is required.

Typical examples include:

• Process pumps
• Water circulation pumps
• Cooling-water pumps
• Industrial fluid-transfer pumps
• Large utility pumps

Variable-speed control can allow the motor to operate at different speeds according to process demand.

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Large Fans

Large fans often require high motor power.

The drive can control motor speed according to airflow requirements.

Typical applications include:

• Industrial ventilation
• Cooling systems
• Process exhaust
• Large air-handling systems
• Industrial combustion-air systems

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Large Blowers

Large blowers can require substantial motor current.

The 545 A configuration is suitable for evaluating high-power blower systems where adjustable speed is required.

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Conveyors

Large conveyors can benefit from controlled acceleration and deceleration.

The drive can provide variable speed and controlled motor starting.

This can be useful for:

• Bulk-material handling
• Manufacturing systems
• Heavy production lines
• Logistics equipment
• Industrial conveyors

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Process Machinery

Large process machines often require coordinated motor control.

The drive can become part of an automated system in which motor speed, operating status, faults, and other information are managed centrally.

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Material Handling

Large material-handling equipment can require substantial motor power and controlled acceleration.

The drive’s current capacity and network communication capabilities make it suitable for consideration in these systems.

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Large Compressors

The model can be evaluated for large compressor applications where variable-speed operation is compatible with the compressor design.

The compressor’s actual load profile and motor current should be checked before final selection.

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22. Major Product Advantages

High Current Capability

The 545 A current rating gives the drive the capacity required for large industrial motors.

This places the model well above the current range of compact general-purpose drives.

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High Horsepower Capability

The 500 HP Light Duty rating and 450 HP Normal Duty rating allow the drive to be used with substantial industrial motors.

The 350 HP Heavy Duty rating provides a lower horsepower reference for applications with greater overload requirements.

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Flexible Duty Classification

The multiple duty ratings allow engineers to match the drive to different mechanical load characteristics.

This makes the drive more flexible than a product intended for only one operating-duty category.

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Embedded EtherNet/IP

The integrated network interface supports connection to an industrial automation architecture.

This is useful for:

• Remote monitoring
• Centralized control
• Diagnostics
• Production data
• Drive status
• Fault management

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Enhanced Local HIM

The enhanced LCD full-numeric HIM provides convenient local access to drive parameters and diagnostic information.

This can simplify commissioning and maintenance.

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Large Industrial Construction

Frame 8 construction makes the model suitable for high-power industrial installations.

The MCC-style configuration is well suited to large electrical equipment layouts.

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Air-Cooled Design

Forced-air cooling provides a practical method for managing heat in a large industrial drive.

Proper airflow and maintenance remain essential.

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Industrial Network Integration

The drive can be incorporated into centralized automation architectures rather than being operated only as a standalone variable-speed controller.

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23. Five Same-Series or Closely Related Models

The following models are suitable for comparison with the 20G1ALD545AN2NNNNN.

Model	Series	Voltage	Current	LD Rating	ND Rating	HD Rating	Frame	Cooling	Depth	HIM
20G1ALD545AN0NNNNN	PowerFlex 755	480 VAC	545 A	500 HP	450 HP	350 HP	8	Air Cooled	800 mm	No HIM
20G1ALD545AN2NNNNN	PowerFlex 755	480 VAC	545 A	500 HP	450 HP	350 HP	8	Air Cooled	800 mm	Enhanced LCD HIM
20G1ALD545JN0NNNNN	PowerFlex 755	480 VAC	545 A	500 HP	450 HP	350 HP	8	Air Cooled	800 mm	No HIM
20G1ALD545JN4NNNNN	PowerFlex 755	480 VAC	545 A	500 HP	450 HP	350 HP	8	Air Cooled	800 mm	Enhanced HIM
20G1ALD617AN0NNNNN	PowerFlex 755	480 VAC	617 A	600 HP	500 HP	400 HP	8	Air Cooled	800 mm	No HIM

These models are closely related because they remain within the same PowerFlex 755 family and use large-frame 480 VAC configurations.

The 545 A models are especially useful when comparing different HIM and configuration options.

The 617 A model provides additional current capacity when the motor application requires a larger drive.

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24. Related Model Parameter Comparison

Model	Current	LD	ND	HD	Frame	Depth	Approx. Planning Weight
20G1ALD545AN0NNNNN	545 A	500 HP	450 HP	350 HP	8	800 mm	500–650 kg
20G1ALD545AN2NNNNN	545 A	500 HP	450 HP	350 HP	8	800 mm	500–650 kg
20G1ALD545JN0NNNNN	545 A	500 HP	450 HP	350 HP	8	800 mm	500–650 kg
20G1ALD545JN4NNNNN	545 A	500 HP	450 HP	350 HP	8	800 mm	500–650 kg
20G1ALD617AN0NNNNN	617 A	600 HP	500 HP	400 HP	8	800 mm	Configuration-dependent

The planning weights shown here are intended for preliminary layout and handling estimates.

The final physical configuration should be checked before transportation, lifting, floor-loading calculations, or structural design.

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25. Five Same-Brand Popular Models

The following models provide examples from other Allen-Bradley PowerFlex series and can be considered when the application has different power or control requirements.

Model	Series	Voltage Class	Application Range	Main Application	Physical Category
25B-D010N104	PowerFlex 525	480 VAC Class	Small motor range	Pumps, fans, conveyors, general machinery	Compact
25C-D010N103	PowerFlex 527	480 VAC Class	Small/medium machine range	Machine automation	Compact
20F11NC2P1JA0NNNNN	PowerFlex 753	480 VAC Class	Industrial motor range	Pumps, fans, conveyors, process machinery	Industrial
20F11NC8P0JA0NNNNN	PowerFlex 753	480 VAC Class	Higher industrial range	Large machinery and process equipment	Industrial
20G1ALD545AN2NNNNN	PowerFlex 755	480 VAC	545 A / large motor range	Large industrial motor control	Frame 8

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26. Comparison with PowerFlex 525

The PowerFlex 525 is intended primarily for smaller machine applications.

Compared with the 20G1ALD545AN2NNNNN, it has a much smaller physical and electrical scale.

Typical PowerFlex 525 applications include:

• Small conveyors
• Small pumps
• Fans
• Packaging equipment
• Machine tools
• Small production machines

The PowerFlex 755 configuration is intended for much larger industrial equipment.

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27. Comparison with PowerFlex 527

The PowerFlex 527 is aimed at machine automation applications where integration between the drive and control system is important.

It is generally used for a much smaller power range than the 545 A Frame 8 PowerFlex 755.

The two products therefore address different machine sizes and electrical requirements.

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28. Comparison with PowerFlex 753

The PowerFlex 753 is a general industrial AC drive platform.

It can be used for:

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

The PowerFlex 755 provides a larger and more flexible platform for demanding applications, including the large Frame 8 configuration represented by the 20G1ALD545AN2NNNNN.

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29. PowerFlex 755 Family Expansion Options

The PowerFlex 755 family includes different current capacities.

Examples include configurations around:

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

The purpose of having multiple current classes is to allow the drive to be matched more closely to the motor’s electrical requirements.

A motor should not automatically be matched solely by horsepower.

The actual current, load characteristics, overload requirement, operating environment, and duty classification should be considered.

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30. Application Selection Table

Application	Recommended Configuration	Main Reason
Large industrial pump	20G1ALD545AN2NNNNN	High current and variable-speed operation
Large fan	20G1ALD545AN2NNNNN	High-power speed control
Large blower	20G1ALD545AN2NNNNN	Large motor capacity
Heavy conveyor	20G1ALD545AN2NNNNN	Controlled acceleration and speed
Large process machine	20G1ALD545AN2NNNNN	Networked industrial motor control
Large compressor	20G1ALD545AN2NNNNN	High-current variable-speed capability
Higher motor current	20G1ALD617AN0NNNNN	Higher current class
No local HIM required	20G1ALD545AN0NNNNN	No-HIM configuration
Local LCD interface required	20G1ALD545AN2NNNNN	Enhanced LCD full-numeric HIM
Smaller machine	25B-D010N104	Compact drive platform

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31. Installation Requirements

The installation of a 545 A Frame 8 drive requires careful planning.

The electrical system should be designed around the drive’s voltage and current requirements.

The following areas deserve particular attention.

Incoming Power

The incoming electrical distribution must be appropriate for the drive.

Protection and disconnect equipment should be selected according to the complete installation.

Motor Connection

The motor cable and termination arrangement must be suitable for the motor current and application.

Grounding

The drive, motor, cabinet, and associated electrical equipment should be properly grounded.

EMC

Power wiring and sensitive control wiring should be arranged to reduce unwanted electrical interference.

Ventilation

The forced-air cooling system requires sufficient airflow.

Mechanical Installation

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

Additional service and cable space should also be provided.

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32. Maintenance

Regular maintenance is important for a large industrial drive.

Typical maintenance activities include:

• Inspecting cooling fans
• Cleaning air passages
• Checking for dust accumulation
• Inspecting power connections
• Checking grounding connections
• Inspecting motor cables
• Checking communication connections
• Reviewing fault history
• Monitoring unusual operating conditions
• Inspecting the electrical cabinet
• Checking ventilation

The enhanced LCD HIM is particularly useful for local maintenance because technicians can inspect drive information directly from the equipment.

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33. Local HIM Advantages

The enhanced LCD full-numeric HIM gives the 20G1ALD545AN2NNNNN an important service advantage.

During commissioning, technicians can work directly with the drive.

Typical activities include:

• Entering motor information
• Adjusting parameters
• Checking status
• Testing motor rotation
• Monitoring current
• Reviewing faults
• Reviewing warnings
• Checking operating conditions

This can make commissioning more convenient when the central automation system is still under development.

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34. Network-Control Advantages

The embedded EtherNet/IP capability allows the drive to be integrated into a centralized automation architecture.

A control system can monitor drive status and operating information while sending speed or operating commands.

This arrangement can be particularly useful when multiple drives operate together.

For example, a production line may contain several large motors that need to coordinate their operation.

A networked architecture can make it easier to manage those drives from a central control system.

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35. Large Industrial Motor Applications

The 20G1ALD545AN2NNNNN is particularly appropriate for applications where the motor is too large for compact drive platforms.

Examples include:

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

The 545 A current rating gives the drive the electrical capacity needed for these large motor systems.

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36. Advantages Summary

Feature	Practical Advantage
545 A Output	Supports large industrial motor loads
500 HP Light Duty	High-power variable-speed applications
450 HP Normal Duty	General large industrial loads
350 HP Heavy Duty	Applications requiring greater overload capability
480 VAC	Suitable for large industrial power distribution
Frame 8	High-power industrial construction
800 mm Deep MCC Style	Suitable for large electrical installations
Embedded EtherNet/IP	Easy integration into industrial automation
Enhanced LCD HIM	Local setup and troubleshooting
Forced-Air Cooling	Practical thermal management
AC Precharge	Appropriate for high-power AC input architecture
EMC Filtering	Supports system-level EMC planning
No DC Terminals	Conventional AC-input arrangement
No Dynamic Braking	Suitable where dedicated braking is not required

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37. Detailed Mechanical Parameters

Item	Specification
Model	20G1ALD545AN2NNNNN
Frame	8
Mechanical Style	MCC Style
Depth	800 mm
Width	Configuration-dependent
Height	Configuration-dependent
Approximate Weight	500–650 kg
Weight Unit	kg
Cooling	Forced Air
Enclosure	Type 1 / IP20
Mounting	Fixed Industrial
Service Area	Required
Cable Entry Area	Required
Ventilation Area	Required

The exact overall dimensions should be confirmed for the final drive configuration before fabricating a cabinet or electrical-room structure.

The weight should likewise be confirmed before transportation or lifting.

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38. Complete Technical Specification

Category	Specification
Model	20G1ALD545AN2NNNNN
Brand	Allen-Bradley
Product Series	PowerFlex 755
Product Family	PowerFlex 750-Series
Product Type	AC Variable Frequency Drive
Voltage	480 VAC
Phase	3 Phase
Rated Current	545 A
Light-Duty Motor Rating	500 HP
Normal-Duty Motor Rating	450 HP
Heavy-Duty Motor Rating	350 HP
Frame	Frame 8
Cooling	Forced Air
Input	AC Input with Precharge
DC Terminals	None
Communication	Embedded EtherNet/IP
Enclosure	Type 1 / IP20
Mechanical Style	800 mm Deep MCC Style
EMC	Filtered
CM Jumper	Removed
Dynamic Braking	None
HIM	Enhanced LCD Full Numeric
Local Operator Interface	Included
Depth	800 mm
Width	Configuration-dependent
Height	Configuration-dependent
Approximate Planning Weight	500–650 kg
Weight	kg
Main Application	Large Industrial Motor Control
Typical Loads	Pumps, Fans, Blowers, Conveyors, Compressors, Process Machinery
Installation	Fixed Industrial Installation

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39. Product Positioning

The 20G1ALD545AN2NNNNN is positioned as a high-capacity industrial drive rather than a compact machine inverter.

Its combination of high current capacity and large-frame construction makes it suitable for large motors.

Its embedded EtherNet/IP capability makes it appropriate for automated industrial environments.

The enhanced LCD HIM makes the model particularly practical when local commissioning and maintenance access are important.

The 800 mm MCC-style configuration also makes it suitable for installations where the drive is incorporated into a larger electrical control system.

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40. Final Product Description

The Allen-Bradley 20G1ALD545AN2NNNNN is a high-power PowerFlex 755 AC variable frequency drive designed for large industrial motor-control applications.

The drive operates in the 480 VAC three-phase class and provides a 545 A current rating.

Its motor-duty ratings are 500 HP for Light Duty, 450 HP for Normal Duty, and 350 HP for Heavy Duty.

The model uses Frame 8 construction with an 800 mm deep MCC-style configuration and forced-air cooling.

Embedded EtherNet/IP allows the drive to be integrated into modern industrial automation networks, making it suitable for centralized control, monitoring, diagnostics, and production-system integration.

The enhanced LCD full-numeric HIM provides convenient local access to parameters and diagnostic information.

This is particularly useful during installation, commissioning, troubleshooting, and maintenance.

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

The filtered EMC configuration and removed CM jumper should be considered together with the complete grounding, motor-cable, cabinet, and electrical-system design.

The drive is well suited to large industrial pumps, fans, blowers, conveyors, compressors, process machinery, material-handling systems, and other large motor-driven equipment.

Its major advantages include high current capacity, substantial motor-power capability, multiple duty classifications, embedded industrial networking, local LCD control, large-frame construction, and practical forced-air cooling.

The physical installation requires careful planning because the drive is a large Frame 8 unit. The 800 mm depth should be incorporated into the electrical-room or MCC layout, while additional room should be provided for cable routing, ventilation, maintenance, and service access.

For preliminary planning, a weight range of approximately 500–650 kg can be used as a general equipment-handling estimate. The final equipment-specific weight should be used for lifting, transportation, floor-loading, and structural calculations.

In practical terms, the 20G1ALD545AN2NNNNN is a large, high-current PowerFlex 755 configuration intended for demanding industrial motor applications where high power, reliable variable-speed operation, network communication, and convenient local diagnostics are required.