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Allen-Bradley 20G1ALD710AN2NNNNN PowerFlex 755 AC Drive

1. Product Overview

The 20G1ALD710AN2NNNNN is a high-power air-cooled AC drive from the PowerFlex 755 family. It is designed for large industrial motor-control applications where high current capacity, reliable speed regulation, network integration, and flexible motor-control functions are required.

This model is rated at 710 A and is intended for demanding three-phase industrial power systems. The drive is particularly suitable for large motors used in pumps, fans, conveyors, compressors, material-handling systems, process machinery, mining equipment, cement plants, and other heavy industrial installations.

The 20G1ALD710AN2NNNNN combines a large-frame power section with embedded industrial networking and a modular architecture. Its air-cooled construction makes it suitable for applications where a conventional forced-air cooling arrangement is preferred over liquid cooling.

The model belongs to the PowerFlex 755 AC Drive series and is configured as an air-cooled, high-power drive with AC input, precharge, no external DC terminals, and an 800 mm deep MCC-style enclosure configuration.

The 710 A current rating places this drive firmly in the large industrial drive category. It is intended for applications where the motor and driven equipment require substantial power capacity rather than compact machine-level motor control.

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2. Brand and Product Series

Item	Description
Brand	Allen-Bradley
Product Family	PowerFlex
Product Series	PowerFlex 755
Product Type	AC Variable Frequency Drive
Model	20G1ALD710AN2NNNNN
Drive Construction	Air-Cooled AC Drive
Application Class	Large Industrial Motor Control
Cooling Method	Forced-Air / Air-Cooled
Current Rating	710 A
Input Configuration	AC Input with Precharge
Communication	Embedded EtherNet/IP
Enclosure Style	Type 1 / IP20, MCC-style
Depth Configuration	800 mm Deep MCC Style
Power Level	High-Power Industrial Drive

The PowerFlex 755 family is designed for applications that require considerably more functionality and power capacity than compact machine drives.

The series is commonly associated with large pumps, fans, conveyors, compressors, mixers, extruders, process machinery, material-handling systems, and other industrial equipment where motor control is a central part of the automation system.

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3. Main Technical Parameters

The following table summarizes the principal configuration and ratings of the 20G1ALD710AN2NNNNN.

Parameter	Specification
Model	20G1ALD710AN2NNNNN
Brand	Allen-Bradley
Series	PowerFlex 755
Product Type	High-Power AC Drive
Drive Rating	710 A
Input Voltage Class	480 VAC Class
Input Phase	3 Phase
Input Frequency	50/60 Hz industrial supply
Cooling	Air-Cooled / Forced-Air
Frame	Frame 8
Light-Duty Rating	650 HP
Normal-Duty Rating	600 HP
Heavy-Duty Rating	450 HP
Approximate LD Power	485 kW
Approximate ND Power	447 kW
Approximate HD Power	336 kW
Input Type	AC Input
Precharge	Included
External DC Terminals	No
Network	Embedded EtherNet/IP
Enclosure Style	Type 1 / IP20
Mechanical Style	800 mm Deep MCC Style
HIM	Blank / No HIM configuration
Dynamic Braking	Not included in this configuration
Filtering	Filtered configuration
Common-Mode Jumper	Configuration dependent; AN2 version uses the corresponding factory configuration
Installation	Industrial cabinet / MCC installation
Cooling Airflow	Forced-air cooling
Intended Motor Type	Three-phase AC motors
Typical Application	Large industrial motor control
Dimensions	Approximately 2453 × 600 × 800 mm*
Approximate Weight	Approximately 620–725 kg*

*The physical dimensions and shipping/installed weight can vary with the exact mechanical configuration and supplied assembly. For final cabinet design, lifting calculations, transportation planning, and foundation work, the actual equipment documentation supplied with the specific unit should be treated as the controlling mechanical reference.

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4. Model Number Identification

The catalog number 20G1ALD710AN2NNNNN contains configuration information that distinguishes this drive from other PowerFlex 755 versions.

Model Element	Meaning / Description
20G	PowerFlex 755 family identification
1	Product configuration
A	AC drive configuration
L	480 VAC class / applicable voltage grouping
D	710 A current-frame grouping
710	710 A current rating
A	Air-cooled configuration
N2	Factory configuration option
NNNNN	Additional configuration / option coding

The most important part for selecting the drive is the combination of the PowerFlex 755 family, voltage class, 710 A current rating, cooling arrangement, and remaining factory configuration codes.

When replacing an existing drive, the entire catalog number should be checked rather than selecting a replacement based only on the 710 A rating.

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5. 710 A Current Rating

The most prominent electrical characteristic of this model is its 710 A output-current class.

This high current rating allows the drive to control substantially larger industrial motors than smaller PowerFlex models.

For engineering selection, current rating is often more useful than horsepower alone because motor current changes according to motor efficiency, power factor, voltage, load characteristics, altitude, temperature, and duty cycle.

A 710 A drive therefore provides substantial capacity for large industrial motors, particularly where the motor operates continuously under significant mechanical loading.

The drive can be applied to different duty categories, but the appropriate motor rating must always be selected according to the actual application duty.

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6. Light-Duty, Normal-Duty and Heavy-Duty Ratings

The 710 A PowerFlex 755 configuration is commonly associated with the following approximate horsepower ratings:

Duty Rating	Approximate Horsepower	Approximate kW	Typical Application
Light Duty	650 HP	485 kW	Pumps, fans, conveyors with moderate overload
Normal Duty	600 HP	447 kW	General industrial machinery
Heavy Duty	450 HP	336 kW	High-load and higher-overload applications

These ratings should not be interpreted simply as three different motor sizes that can automatically be connected to the same drive.

The actual selection should consider motor nameplate current, overload requirement, acceleration requirements, ambient temperature, installation altitude, duty cycle, and driven-load characteristics.

For example, a conveyor carrying heavy bulk material may require a lower horsepower motor rating than a pump of similar nominal horsepower because the conveyor can experience higher starting torque and greater transient loading.

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7. 480 VAC Three-Phase Industrial Power

The 20G1ALD710AN2NNNNN belongs to the 480 VAC class of PowerFlex 755 drives.

This voltage class is widely used in large industrial facilities because it provides an efficient method of distributing substantial motor power while keeping operating current manageable compared with lower-voltage systems.

The three-phase input architecture makes the drive appropriate for large industrial motor systems, including process plants, manufacturing facilities, mining operations, water-treatment facilities, material-handling installations, and heavy machinery.

The drive converts incoming AC power into a controlled variable-frequency and variable-voltage output suitable for controlling a three-phase AC motor.

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8. Air-Cooled Construction

The drive uses an air-cooled / forced-air cooling arrangement.

For a high-power drive, heat management is a major part of system design. Semiconductor switching devices, bus components, inductive components, and other power electronics generate heat during operation.

Forced-air cooling transfers this heat away from the power electronics and into the surrounding ventilation system.

For installation planning, sufficient airflow and clearance around the equipment are essential.

The installation environment should be clean enough to prevent excessive accumulation of dust on heat sinks, fans, filters, and ventilation paths.

In applications such as cement plants, mining facilities, steel plants, and aggregate-processing facilities, environmental dust control becomes particularly important.

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9. Frame 8 High-Power Construction

The 20G1ALD710AN2NNNNN is associated with a large Frame 8 power configuration.

Frame size is important because it determines much more than the physical enclosure dimensions.

It is also related to the power semiconductor arrangement, cooling system, internal bus structure, cable-entry requirements, service access, and mechanical installation.

Large-frame drives require considerably more planning than small machine-mounted drives.

Before installation, engineers should verify:

• Cabinet dimensions
• Door and access clearances
• Cable bending radius
• Incoming power-cable routing
• Motor-cable routing
• Grounding arrangement
• Cooling airflow
• Fan maintenance access
• Lifting points
• Floor loading
• Transportation route
• Maintenance access

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10. Embedded EtherNet/IP Communication

One of the important characteristics of the PowerFlex 755 platform is its integration into industrial automation networks.

The specified configuration includes embedded EtherNet/IP capability, allowing the drive to participate in an Ethernet-based industrial control architecture.

This is useful when the drive is connected to a PLC, controller, HMI, supervisory system, or plant-level automation network.

Typical information exchanged over the industrial network can include:

• Start and stop commands
• Speed references
• Torque references
• Drive status
• Fault information
• Warning conditions
• Motor current
• Output frequency
• Output voltage
• Operating status
• Diagnostic information
• Parameter values
• Production-related operating data

This network integration can reduce the need for extensive hardwired control circuits.

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11. AC Input with Precharge

The 20G1ALD710AN2NNNNN is configured with AC input with precharge.

Precharge is an important function in large power-electronic equipment because the DC bus contains substantial energy-storage components.

When a large drive is energized, the DC bus capacitors cannot simply be connected to the AC supply without appropriate current-limiting and charging control.

The precharge system allows the DC bus to reach the appropriate operating condition in a controlled manner.

For large industrial installations, this contributes to a more controlled power-up sequence and helps manage the electrical stress associated with energizing a high-power drive.

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12. No External DC Terminals

This configuration is specified without external DC terminals.

This is relevant when engineers are designing common-DC-bus systems or considering external DC-link connections.

A drive configuration without external DC terminals should not be treated as interchangeable with a configuration specifically designed for external DC-bus integration.

For replacement projects, the existing electrical architecture should therefore be checked before selecting a replacement unit.

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13. Type 1 / IP20 MCC-Style Construction

The 20G1ALD710AN2NNNNN is associated with a Type 1 / IP20, 800 mm deep MCC-style configuration.

This construction is intended for installation inside a suitable industrial electrical environment rather than direct outdoor exposure.

IP20 protection provides protection against contact with hazardous internal electrical parts but does not provide the environmental sealing associated with higher IP-rated enclosures.

For installations in dusty, humid, corrosive, outdoor, or washdown environments, additional enclosure and environmental protection may be necessary.

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14. Dimensions and Weight

Because this is a large-frame industrial drive, physical planning is extremely important.

Mechanical Parameter	Approximate Value
Model	20G1ALD710AN2NNNNN
Height	Approximately 2453 mm
Width	Approximately 600 mm
Depth	Approximately 800 mm
Weight	Approximately 620–725 kg
Installation Style	MCC / Industrial Cabinet
Cooling	Forced-Air
Frame	Frame 8

The dimensions above should be regarded as planning-level values rather than fabrication dimensions.

Large PowerFlex assemblies can vary in mechanical arrangement depending on configuration, options, cabinet construction, and installation package.

For cabinet fabrication, transportation, crane selection, floor loading, and final installation, the actual mechanical drawing for the supplied configuration should always be checked.

The weight is substantial enough that normal manual handling is not appropriate.

A suitable lifting and transportation method should be planned before the equipment arrives at the installation site.

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15. Installation Requirements

The installation of a 710 A industrial drive requires considerably more preparation than the installation of a small variable-frequency drive.

The electrical room or MCC area should provide adequate space for:

• Power cables
• Control cables
• Network cables
• Cooling airflow
• Maintenance access
• Door opening
• Electrical isolation
• Testing equipment
• Lifting equipment
• Heat dissipation
• Inspection

The drive should be installed on a suitable structural support capable of carrying its considerable weight.

The floor, mounting structure, cabinet frame, and lifting arrangement should all be checked before installation.

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16. Electrical Installation

A high-power drive such as the 20G1ALD710AN2NNNNN requires careful electrical engineering.

The input power system should be selected based on:

• Supply voltage
• Available short-circuit current
• Protective-device coordination
• Cable ampacity
• Installation temperature
• Cable length
• Grounding system
• Motor characteristics
• Local electrical regulations
• Harmonic requirements

The motor-side wiring is equally important.

Long motor cables can create additional electrical stress, reflected-wave effects, electromagnetic interference, and bearing-current concerns depending on motor construction and installation conditions.

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17. Motor Selection

The motor should not be selected only by horsepower.

A proper motor selection should consider:

Selection Factor	Importance
Motor Voltage	Must match the drive output/application
Motor Current	Must remain within drive capability
Motor Power	Must match duty rating
Motor Speed	Determines operating frequency range
Motor Frequency	Important for speed control
Motor Torque	Critical for load selection
Starting Torque	Important for conveyors and compressors
Overload Requirement	Determines duty category
Motor Insulation	Important for inverter-fed operation
Cable Length	Can affect output waveform and motor insulation stress
Environment	Temperature, dust, humidity and altitude must be considered

A 600 HP motor, for example, does not automatically mean that every 600 HP application can use the same drive configuration.

The mechanical load profile is equally important.

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18. Main Product Applications

The 20G1ALD710AN2NNNNN is primarily intended for large industrial motor-control applications.

Typical applications include:

1. Large water pumps
2. Cooling-water pumps
3. Process pumps
4. Large centrifugal fans
5. Industrial blowers
6. Belt conveyors
7. Bulk-material conveyors
8. Mining machinery
9. Crushers and processing equipment
10. Cement-production machinery
11. Aggregate-processing equipment
12. Large compressors
13. Process machinery
14. Material-handling systems
15. Industrial mixers
16. Large ventilation systems
17. Wastewater equipment
18. Heavy manufacturing machinery
19. Large production-line motors
20. Industrial auxiliary equipment

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19. Pump Applications

Large pumps are one of the most practical applications for this type of drive.

A variable-speed drive allows the pump motor speed to be adjusted according to process demand rather than operating continuously at full speed.

For water systems, cooling systems, process plants, and wastewater facilities, speed control can help match pump output to changing process requirements.

The PowerFlex 755 architecture also provides the control and communication functions required for integration into a larger automation system.

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20. Fan and Blower Applications

Large fans and blowers are another important application.

Fan systems frequently operate at variable process demand.

A drive can control motor speed to match airflow requirements.

This is useful in:

• Industrial ventilation
• Furnace systems
• Cooling towers
• Dust collection
• Process ventilation
• Mine ventilation
• Factory air-handling systems
• Cement plants
• Steel-processing facilities

Because fan and pump loads can change significantly with speed, variable-speed control can also be useful for reducing unnecessary motor operation at full speed.

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21. Conveyor Applications

The 710 A drive can be used in large conveyor systems where the motor must provide substantial torque.

Examples include:

• Mining conveyors
• Ore conveyors
• Coal conveyors
• Aggregate conveyors
• Cement conveyors
• Bulk-material conveyors
• Warehouse material systems
• Port loading equipment

Conveyor applications can place significant demands on acceleration and torque control.

The drive therefore needs to be selected based on the actual load profile rather than simply the conveyor motor nameplate horsepower.

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22. Mining Applications

Large-frame AC drives are particularly useful in mining and mineral-processing facilities.

Potential applications include:

• Belt conveyors
• Crushers
• Fans
• Pumps
• Hoisting-related machinery
• Material-processing equipment
• Ventilation systems
• Slurry pumps

Mining environments can be demanding because of dust, vibration, temperature variations, and continuous operation.

For this reason, the installation enclosure and environmental protection must be carefully engineered around the drive.

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23. Cement and Aggregate Applications

Cement and aggregate plants contain many large motors.

The drive can be applied to equipment such as:

• Raw-material conveyors
• Process fans
• Dust-collection fans
• Large pumps
• Crushers
• Material-handling systems
• Cooling equipment
• Process blowers

The ability to integrate motor control into a plant automation network can simplify centralized monitoring and control.

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24. Compressor Applications

Large industrial compressors can require high starting torque and substantial continuous power.

The drive can provide variable-speed control when the compressor design permits VFD operation.

Typical considerations include:

• Compressor type
• Required starting torque
• Minimum operating speed
• Maximum operating speed
• Acceleration time
• Process pressure
• Motor thermal capability
• Mechanical resonance
• Control-system integration

A detailed application study is recommended for compressor systems because compressor loads can differ considerably from centrifugal pump or fan loads.

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25. Process Machinery

The PowerFlex 755 platform can also be used in large process machinery.

Examples include:

• Mixers
• Extrusion equipment
• Processing lines
• Material handling
• Large production machinery
• Industrial mixers
• Large machine tools
• Continuous-process equipment

In these applications, accurate speed control and communication with the plant controller can be important.

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26. Product Advantages

High Current Capacity

The 710 A rating gives the drive substantial motor-control capacity for large industrial equipment.

This makes it suitable for applications that are beyond the normal operating range of smaller machine-oriented drives.

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Large Industrial Power Range

The approximate 650 HP light-duty rating, 600 HP normal-duty rating, and 450 HP heavy-duty rating allow the same drive family to address different application requirements.

The exact selection must be based on the required duty and motor current.

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Embedded Industrial Networking

Embedded EtherNet/IP capability provides a practical connection between the drive and a modern industrial automation system.

This can reduce hardwired signals and provide greater access to operating information.

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Air-Cooled Architecture

Air cooling avoids the complexity of liquid-cooling infrastructure.

For facilities already designed around forced-air industrial equipment, this can simplify integration.

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Modular PowerFlex Architecture

The PowerFlex 755 platform is designed around a modular architecture.

This makes it suitable for sophisticated industrial automation systems where the drive may need to communicate with PLCs, HMIs, supervisory systems, and other automation equipment.

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Suitable for Large Motors

The 710 A current class allows the drive to be used with motors that require considerably more current than compact VFDs can supply.

This makes it suitable for large pumps, fans, conveyors, and process equipment.

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27. Maintenance Advantages

Maintenance planning is particularly important for high-power drives.

The air-cooled design means that cooling components should be inspected periodically.

Typical maintenance considerations include:

• Cooling fans
• Airflow passages
• Heat sinks
• Electrical connections
• Power terminals
• Ground connections
• Control wiring
• Network connections
• Cabinet ventilation
• Dust accumulation
• Signs of overheating
• Capacitor condition
• Fault history

A clean cooling system is essential for maintaining reliable operation.

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28. Energy Management Applications

Variable-speed control can provide energy-management benefits in applications where motor speed can be adjusted according to actual process demand.

This is especially relevant to centrifugal pump and fan systems.

Instead of running the motor continuously at maximum speed, the drive can adjust the motor operating point according to process requirements.

The actual energy savings depend on the load profile, motor efficiency, process requirements, system pressure, mechanical design, and operating schedule.

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29. Communication and Automation Architecture

A typical control architecture can be organized as follows:

PLC / Controller → Industrial Ethernet → PowerFlex 755 → Motor → Mechanical Load

The drive can serve as an intelligent motor-control node within the overall automation architecture.

The controller can send commands and references while receiving drive status and diagnostic information.

This is useful for centralized monitoring of large motor systems.

For example, a plant controller can monitor:

• Drive running status
• Motor speed
• Output frequency
• Current
• Fault status
• Warning status
• Operating conditions

This information can then be displayed on an HMI or supervisory system.

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30. Mechanical Planning

Planning Item	Recommendation
Model	20G1ALD710AN2NNNNN
Approximate Height	2453 mm
Approximate Width	600 mm
Approximate Depth	800 mm
Approximate Weight	620–725 kg
Installation	MCC / Electrical Room
Cooling	Forced Air
Service Space	Must be provided
Lifting	Mechanical lifting equipment recommended
Floor Loading	Must be checked
Cable Access	Must be planned
Ventilation	Required
Environmental Protection	Required according to installation location

The approximate physical size means this is not a compact cabinet component.

It should be treated as major electrical equipment during transportation and installation planning.

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31. Recommended Related PowerFlex 755 Models

The following five models are closely related and can be considered when comparing current capacity, application requirements, or replacement options.

Model	Current	Approx. LD Rating	Approx. ND Rating	Approx. HD Rating	Configuration
20G1ALD545AN0NNNNN	545 A	500 HP	450 HP	350 HP	Air-Cooled PowerFlex 755
20G1ALD617AN2NNNNN	617 A	600 HP	500 HP	400 HP	Air-Cooled PowerFlex 755
20G1ALD617AN4NNNNN	617 A	600 HP	500 HP	400 HP	Air-Cooled PowerFlex 755
20G1ALD710AN0NNNNN	710 A	650 HP	600 HP	450 HP	Air-Cooled PowerFlex 755
20G1ALD740AN2NNNNN	740 A	700 HP	650 HP	500 HP	Air-Cooled PowerFlex 755

These models are useful for comparing the same general PowerFlex 755 high-power platform while changing the current rating or factory configuration.

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32. 545 A Related Model

The 20G1ALD545AN0NNNNN provides a lower current level than the 710 A model.

It can be considered for applications where the motor does not require the full capacity of the 710 A configuration.

This may allow the overall drive system to be more closely matched to the motor’s actual current requirement.

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33. 617 A Related Models

The 20G1ALD617AN2NNNNN and 20G1ALD617AN4NNNNN are useful comparison models because they remain in the same large-frame PowerFlex 755 family while providing a lower 617 A current rating.

They can be considered where the required motor current falls below the 710 A range.

The final choice between configuration variants should be based on the complete catalog number and required factory options.

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34. 740 A Related Model

The 20G1ALD740AN2NNNNN provides a higher 740 A current rating.

It is therefore useful when the application approaches or exceeds the practical current range of the 710 A configuration.

For high-load applications, this additional current capacity can provide a different motor-sizing option, subject to the specific duty category and installation requirements.

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35. Five Same-Brand Popular Models

The following five models are useful for comparing different drive sizes and product families under the same brand.

Model	Series	General Rating / Class	Typical Application	Main Characteristic
25B-D010N104	PowerFlex 525	Small/Medium Motor Control	Machines, pumps, fans, conveyors	Compact general-purpose VFD
25C-D010N103	PowerFlex 527	Small/Medium Motor Control	Networked machines	Compact network-oriented drive
20F11NC2P1JA0NNNNN	PowerFlex 753	Medium/Large Industrial	Pumps, fans, conveyors, machinery	Flexible industrial architecture
20F11NC8P0JA0NNNNN	PowerFlex 753	Large Industrial	Large machinery and process equipment	Higher-capacity industrial platform
20G1ALD710AN2NNNNN	PowerFlex 755	710 A High-Power	Large industrial systems	High-power, high-functionality drive

The five models above cover a broad range of industrial motor-control requirements.

The smaller PowerFlex models are more appropriate for compact machines and moderate-power applications, while the PowerFlex 753 and PowerFlex 755 families are intended for more demanding industrial systems.

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36. Same-Brand Product Comparison

Model	Series	Application Scale	Typical Equipment	Control Architecture
25B-D010N104	PowerFlex 525	Small to Medium	Pumps, fans, conveyors, machines	Compact drive control
25C-D010N103	PowerFlex 527	Small to Medium	Networked machines	Machine automation
20F11NC2P1JA0NNNNN	PowerFlex 753	Medium to Large	Industrial machinery	Flexible industrial control
20F11NC8P0JA0NNNNN	PowerFlex 753	Large	Process equipment	Advanced industrial drive
20G1ALD710AN2NNNNN	PowerFlex 755	Very Large	Large pumps, fans, conveyors, process systems	High-power industrial automation

The 20G1ALD710AN2NNNNN is positioned at the high-power end of this comparison.

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37. Application Selection Table

Application	Suitability of 20G1ALD710AN2NNNNN	Important Considerations
Large Pump	Excellent application class	Check pump curve and motor current
Large Fan	Excellent application class	Verify airflow and minimum speed
Cooling Water Pump	Suitable	Continuous-duty thermal conditions
Mining Conveyor	Suitable	Starting torque and overload
Cement Conveyor	Suitable	Dust and environmental protection
Large Blower	Suitable	Airflow and process requirements
Industrial Compressor	Suitable with application review	Starting and operating torque
Process Machinery	Suitable	Speed and torque profile
Crusher	Application-dependent	High mechanical shock and overload
Mixer	Application-dependent	Torque requirements must be evaluated
Wastewater Equipment	Suitable	Environmental enclosure considerations
Material Handling	Suitable	Acceleration/deceleration profile

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38. Difference Between the 617 A, 710 A and 740 A Versions

The current rating is the major difference when comparing these three closely related configurations.

Model	Current Rating	LD Rating	ND Rating	HD Rating
20G1ALD617AN2NNNNN	617 A	600 HP	500 HP	400 HP
20G1ALD710AN2NNNNN	710 A	650 HP	600 HP	450 HP
20G1ALD740AN2NNNNN	740 A	700 HP	650 HP	500 HP

The 710 A model therefore sits between the 617 A and 740 A configurations.

This makes it an important selection point for large motors where 617 A may not provide enough capacity but the additional capacity of the 740 A model may not be necessary.

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39. Why the 710 A Configuration Is Important

The 710 A rating provides a useful balance within the large PowerFlex 755 range.

It offers more current capacity than the 617 A models while remaining below the 740 A configuration.

For system designers, this provides another option when selecting a drive according to motor nameplate current and application duty.

The actual selection should always be based on motor current rather than simply selecting the largest available drive.

Oversizing a drive can affect cost, physical dimensions, electrical infrastructure, and protection requirements.

Undersizing a drive can create overload, thermal, and reliability problems.

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40. Practical Replacement Considerations

When replacing an existing PowerFlex 755 drive, the complete catalog number should be compared.

Important items include:

• Voltage class
• Current rating
• Duty rating
• Frame size
• Cooling method
• Network configuration
• HIM configuration
• Dynamic-braking configuration
• Filter configuration
• Common-mode configuration
• DC-terminal configuration
• Enclosure style
• Mechanical depth
• Input arrangement
• Output requirements
• Existing motor
• Existing control system

A replacement that looks similar physically may not have identical electrical or control functionality.

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41. Maintenance Considerations

For long-term industrial operation, preventive maintenance should include regular inspection of the cooling system.

The following areas deserve particular attention:

Cooling Fans

Fans are critical components in large air-cooled drives.

Fan wear can increase temperature and eventually lead to drive thermal faults.

Air Passages

Dust and debris should not be allowed to accumulate around ventilation openings.

Electrical Connections

High-current connections should be inspected according to the applicable maintenance procedure.

Control Wiring

Control and network connections should be checked for mechanical security and environmental damage.

Fault History

The drive’s diagnostic and fault information can be useful for identifying developing problems before they become major failures.

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42. Environmental Considerations

Although the drive is designed for industrial use, the installation environment remains important.

The following conditions should be considered:

• Ambient temperature
• Humidity
• Dust
• Corrosive gases
• Altitude
• Vibration
• Ventilation
• Electrical noise
• Cabinet temperature
• Cooling airflow

Heavy industrial environments may require additional environmental protection.

A standard Type 1 / IP20 configuration should generally be installed within an appropriate electrical enclosure or protected electrical environment.

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43. Advantages for Large Industrial Systems

The 20G1ALD710AN2NNNNN offers several practical advantages for large motor-control installations.

1. High Current Capacity

The 710 A rating supports large industrial motors and equipment.

2. High Horsepower Capability

The approximate 650 HP LD rating places the drive in the large-motor category.

3. Industrial Ethernet Integration

Embedded EtherNet/IP simplifies integration with Ethernet-based industrial control systems.

4. Air-Cooled Design

Forced-air cooling provides a familiar solution for industrial electrical rooms and MCC installations.

5. Large-Frame Architecture

The Frame 8 construction is intended for high-power applications.

6. Flexible Application Range

The same general platform can be applied to pumps, fans, conveyors, compressors, and process machinery.

7. Industrial Diagnostics

Drive status and fault information can be incorporated into a plant control system.

8. Suitable for Continuous Industrial Operation

With correct application, cooling, maintenance, and environmental control, the drive is designed for demanding industrial service.

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44. Final Recommended Related-Model Table

Model	Current	LD	ND	HD	Main Reason to Consider
20G1ALD545AN0NNNNN	545 A	500 HP	450 HP	350 HP	Lower-capacity alternative
20G1ALD617AN2NNNNN	617 A	600 HP	500 HP	400 HP	Medium high-power option
20G1ALD617AN4NNNNN	617 A	600 HP	500 HP	400 HP	Alternative factory configuration
20G1ALD710AN0NNNNN	710 A	650 HP	600 HP	450 HP	Closely related 710 A configuration
20G1ALD740AN2NNNNN	740 A	700 HP	650 HP	500 HP	Higher-capacity alternative

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45. Final Same-Brand Comparison

Model	Series	Approximate Application Level	Typical Use
25B-D010N104	PowerFlex 525	Small / Medium	Compact machines, pumps, fans
25C-D010N103	PowerFlex 527	Small / Medium	Networked machine applications
20F11NC2P1JA0NNNNN	PowerFlex 753	Medium / Large	Industrial machinery
20F11NC8P0JA0NNNNN	PowerFlex 753	Large	Process and heavy industrial systems
20G1ALD710AN2NNNNN	PowerFlex 755	Very Large	High-power industrial motor systems

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46. Product Selection Checklist

Before selecting the 20G1ALD710AN2NNNNN, engineers should confirm the following:

Check Item	Required
Motor Voltage	Yes
Motor Nameplate Current	Yes
Motor Horsepower	Yes
Duty Classification	Yes
Starting Torque	Yes
Maximum Speed	Yes
Minimum Speed	Yes
Acceleration Time	Yes
Deceleration Time	Yes
Input Voltage	Yes
Short-Circuit Rating	Yes
Cooling Requirements	Yes
Ambient Temperature	Yes
Altitude	Yes
Cabinet Dimensions	Yes
Weight / Floor Loading	Yes
Cable Size	Yes
Motor Cable Length	Yes
Grounding	Yes
Network Requirements	Yes
Existing PLC Architecture	Yes
Maintenance Access	Yes

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47. Technical Summary

Category	Specification
Product	High-Power AC Variable Frequency Drive
Model	20G1ALD710AN2NNNNN
Brand	Allen-Bradley
Series	PowerFlex 755
Current	710 A
Voltage Class	480 VAC
Phase	3 Phase
Cooling	Air-Cooled
Frame	Frame 8
LD Rating	650 HP
ND Rating	600 HP
HD Rating	450 HP
Communication	Embedded EtherNet/IP
Input	AC Input with Precharge
DC Terminals	No External DC Terminals
Enclosure Style	Type 1 / IP20
Mechanical Style	800 mm Deep MCC Style
HIM	Blank / No HIM
Dynamic Braking	Not included in this configuration
Dimensions	Approx. 2453 × 600 × 800 mm
Weight	Approx. 620–725 kg
Primary Market	Industrial Motor Control
Typical Equipment	Pumps, Fans, Conveyors, Compressors, Process Machinery
Installation	Industrial Electrical Room / MCC

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48. Final Product Description

The Allen-Bradley 20G1ALD710AN2NNNNN is a high-capacity PowerFlex 755 air-cooled AC drive designed for large industrial motor-control applications.

With a 710 A current rating, approximately 650 HP light-duty, 600 HP normal-duty, and 450 HP heavy-duty capability, this drive is intended for large three-phase motors used in demanding industrial environments.

Its 480 VAC three-phase configuration, Frame 8 construction, forced-air cooling, AC input with precharge, absence of external DC terminals, and 800 mm deep MCC-style construction make it particularly suitable for large electrical-room and MCC installations.

The embedded EtherNet/IP capability allows the drive to be integrated into modern industrial automation systems, providing communication between the drive, PLC, HMI, and supervisory control architecture.

From a practical engineering perspective, the 20G1ALD710AN2NNNNN is best suited to applications where motor power, current capacity, network integration, and industrial reliability are more important than compact equipment size.

Typical applications include large pumps, cooling-water systems, industrial fans, blowers, conveyors, mining equipment, cement and aggregate machinery, compressors, material-handling systems, wastewater equipment, and other large process motors.

Because the drive is a large Frame 8 unit, installation planning is an important part of the overall system design. The approximate 2453 × 600 × 800 mm mechanical envelope and 620–725 kg planning weight mean that transportation, lifting, floor loading, cabinet arrangement, cooling airflow, cable routing, and maintenance access should all be considered before installation.

For motor selection, the most important parameters are not horsepower alone. Motor nameplate current, operating voltage, overload requirements, load characteristics, acceleration requirements, ambient conditions, altitude, motor-cable length, and duty cycle should all be evaluated.

When comparing related PowerFlex 755 models, the 617 A, 710 A, and 740 A versions provide useful alternatives for different motor-current requirements.

Overall, the 20G1ALD710AN2NNNNN represents a large industrial variable-frequency drive configuration intended for substantial motor loads and sophisticated automation environments, particularly where a high-current air-cooled PowerFlex 755 platform is required.