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Allen-Bradley 20G1ALD430AN0NNNNN PowerFlex 755 AC Drive

1. Product Overview

The Allen-Bradley 20G1ALD430AN0NNNNN is a high-power PowerFlex 755 AC Drive designed for industrial motor-speed control applications requiring substantial power capacity, reliable variable-frequency operation, network communication, and integration with automated control systems.

This model is an air-cooled, three-phase, 480 VAC PowerFlex 755 drive with a rated output current of 430 A. It is a large Frame 8 configuration with an 800 mm deep MCC-style construction, making it suitable for floor-standing industrial installations and electrical control rooms.

The drive is configured with embedded EtherNet/IP, AC input with precharge, no DC terminals, filtered input, CM jumper removed, no dynamic braking, and a blank/no-HIM configuration.

The specified model provides power ratings of approximately 400 HP for Low Duty, 350 HP for Normal Duty, and 300 HP for Heavy Duty.

This combination makes the 20G1ALD430AN0NNNNN suitable for large pumps, fans, blowers, conveyors, process equipment, material-handling systems, and other industrial machines requiring a large-capacity variable-frequency drive.

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2. Brand and Product Series

Item	Specification
Brand	Allen-Bradley
Product Series	PowerFlex 755
Product Family	PowerFlex Air Cooled 755 AC Drive
Exact Model	20G1ALD430AN0NNNNN
Product Type	AC Variable Frequency Drive
Drive Construction	Air Cooled
Frame	Frame 8
Input Voltage	480 VAC
Input Phase	3 Phase
Output Current	430 A
Low-Duty Rating	400 HP
Normal-Duty Rating	350 HP
Heavy-Duty Rating	300 HP
Communication	Embedded EtherNet/IP
Enclosure	Type 1 / IP20
Installation Style	800 mm Deep MCC Style
Input Configuration	AC Input with Precharge
DC Terminals	None
EMC Configuration	Filtered
CM Jumper	Removed
Dynamic Braking	None
HIM	Blank / No HIM

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3. Main Technical Parameters

Parameter	Specification
Model	20G1ALD430AN0NNNNN
Brand	Allen-Bradley
Series	PowerFlex 755
Drive Type	Industrial AC Variable Frequency Drive
Input Voltage	480 VAC
Input Phase	3 Phase
Rated Output Current	430 A
Low-Duty Motor Rating	400 HP
Normal-Duty Motor Rating	350 HP
Heavy-Duty Motor Rating	300 HP
Approximate Low-Duty Metric Equivalent	298 kW
Approximate Normal-Duty Metric Equivalent	261 kW
Approximate Heavy-Duty Metric Equivalent	224 kW
Frame Size	Frame 8
Cooling	Forced Air
Enclosure	Type 1 / IP20
Installation Style	800 mm Deep MCC Style
Input	AC Input with Precharge
DC Terminals	None
EMC Filter	Filtered
CM Jumper	Removed
Dynamic Braking	None
Communication	Embedded EtherNet/IP
Local HIM	Blank / No HIM
PID Control	Supported at series level
Installation	Floor Standing
Approximate Width	About 600 mm*
Approximate Height	About 2,000–2,400 mm*
Depth	800 mm
Approximate Weight	About 500–650 kg*

*The width, height, and total installed weight should be regarded as preliminary planning values for this large Frame 8 configuration. The actual mechanical arrangement can vary according to the complete drive configuration, cabinet arrangement, options, power components, and installation accessories. The final mechanical drawing should be used for cabinet fabrication, lifting, transportation, and installation planning.

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4. Electrical Characteristics

The 20G1ALD430AN0NNNNN is designed for a 480 VAC three-phase electrical system.

Its rated output current is 430 A, placing it firmly in the high-power industrial drive category.

The current rating is more important than simply looking at the motor horsepower when selecting the drive.

The motor nameplate current, load characteristics, overload requirements, acceleration time, ambient temperature, and duty cycle should all be considered before final selection.

For a conventional 480 VAC industrial system, this drive provides a practical solution for large motors used in continuous-duty machinery and process equipment.

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5. Motor Power Ratings

The model has three principal duty ratings.

Duty Type	Motor Rating	Approximate Metric Equivalent
Low Duty	400 HP	Approximately 298 kW
Normal Duty	350 HP	Approximately 261 kW
Heavy Duty	300 HP	Approximately 224 kW

These ratings represent different application loading conditions.

The 400 HP Low-Duty rating is intended for applications where the drive is not subjected to severe overload conditions.

The 350 HP Normal-Duty rating is appropriate for many general industrial applications with comparatively stable operating conditions.

The 300 HP Heavy-Duty rating allows the drive to be used with a smaller motor where the application requires greater overload capability.

The Heavy-Duty rating is particularly relevant when the motor must repeatedly accelerate a high-inertia load or deal with temporary increases in torque demand.

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6. 430 A Output Current

The 430 A output rating is a major characteristic of this drive.

A 430 A drive is designed for large industrial motors and is normally installed as part of a substantial electrical system rather than as a compact machine-mounted inverter.

The large current capacity makes the drive suitable for applications where the motor may draw substantial current during acceleration or during periods of increased load.

This makes the model particularly relevant to:

• Large pumps.
• Industrial fans.
• Blowers.
• Conveyors.
• Process equipment.
• Material-handling machinery.
• Water treatment systems.
• Mining equipment.
• Cement and aggregate machinery.
• Large HVAC and ventilation equipment.

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7. 480 VAC Three-Phase Configuration

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

This voltage class is widely used in industrial facilities and is common in large manufacturing plants, process facilities, water treatment installations, material-handling systems, and heavy industrial equipment.

The three-phase architecture provides the electrical foundation for controlling large three-phase induction motors and compatible AC motors.

The actual facility voltage should be checked before installation.

Voltage compatibility should be considered together with transformer configuration, incoming power distribution, protective equipment, grounding arrangement, and motor nameplate voltage.

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8. Air-Cooled Construction

The 20G1ALD430AN0NNNNN uses a forced-air cooling system.

At this power level, thermal management is extremely important.

The drive generates heat during normal operation, particularly within the power semiconductor section.

Forced-air cooling moves air through the drive to remove this heat.

The electrical room or cabinet therefore needs adequate airflow.

The air inlet and exhaust areas should not be blocked by cables, cabinet structures, filters, or other equipment.

For a large installation, room ventilation and air-conditioning requirements should consider the total heat output of the entire electrical system rather than the drive alone.

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9. Frame 8 Construction

The model uses a Frame 8 configuration.

Frame 8 represents a large physical construction intended for high-power industrial applications.

This is substantially larger than compact drive frames used for small motors.

The Frame 8 construction should be taken into account during:

• Cabinet design.
• Floor planning.
• Cable routing.
• Transportation.
• Lifting.
• Maintenance.
• Ventilation.
• Electrical-room layout.
• Service access.

Because the unit is large and heavy, mechanical installation should be planned before delivery.

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10. 800 mm Deep MCC-Style Installation

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

This is particularly important when preparing an electrical room or motor-control-center layout.

The 800 mm depth should be allowed for during cabinet planning.

Additional space may also be required around the equipment for cable entry, maintenance, ventilation, inspection, and safe working access.

The final cabinet dimensions should not be based solely on the nominal drive depth.

Associated cable compartments, incoming protection, busbar arrangements, disconnecting equipment, and other accessories may increase the total installation footprint.

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11. Type 1 / IP20 Enclosure

The drive uses a Type 1 / IP20 class construction.

This type of enclosure is intended for installation in an appropriate protected electrical environment.

It is not intended to be treated as a sealed outdoor or washdown enclosure.

The installation environment should therefore be controlled with respect to:

• Dust.
• Moisture.
• Condensation.
• Corrosive chemicals.
• Excessive temperature.
• Direct water exposure.
• Conductive contamination.

For harsh environments, the complete cabinet or room design should provide the necessary environmental protection.

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12. Embedded EtherNet/IP

One of the important features of the 20G1ALD430AN0NNNNN is its embedded EtherNet/IP communication capability.

This allows the drive to participate directly in an industrial automation network.

The drive can be integrated into a control system where operating commands, speed references, status information, feedback values, alarms, and diagnostics are exchanged between the drive and the control architecture.

Typical network-based functions can include:

• Start and stop control.
• Speed reference.
• Frequency reference.
• Drive status.
• Motor current feedback.
• Fault indication.
• Alarm indication.
• Diagnostic information.
• Operating condition monitoring.

This is particularly useful in automated plants where many drives are managed from a centralized PLC or supervisory system.

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13. No-HIM Configuration

The 20G1ALD430AN0NNNNN is specified with a blank/no-HIM configuration.

This means the drive is not supplied with a permanent local Human Interface Module as part of this configuration.

This arrangement is useful for centralized automation systems.

For example, the drive may be installed inside an electrical room while operators control the motor through a remote HMI or plant control system.

The absence of a local HIM can also provide a cleaner installation when local manual adjustment is not required.

For applications where operators need to make frequent local changes directly at the drive, a related HIM-equipped configuration can be considered.

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14. AC Input With Precharge

The drive uses an AC input with precharge configuration.

Precharge is an important part of the power-input arrangement of a large AC drive.

The precharge circuit controls the initial charging process of the DC-link capacitors when the drive is energized.

This reduces the uncontrolled inrush current that could otherwise occur when a large bank of capacitors is connected directly to the incoming supply.

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

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15. No DC Terminals

The specified model is configured with no DC terminals.

This means the drive is primarily treated as an AC-input drive configuration rather than a system requiring external access to a common DC bus through dedicated DC terminals.

This should be taken into consideration when designing systems involving shared DC-bus architectures or external regenerative equipment.

If a project requires common DC-bus operation, the exact drive configuration and required options should be reviewed before selection.

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16. Filtered EMC Configuration

The model includes a filtered EMC configuration.

Electromagnetic compatibility becomes increasingly important as drive power increases.

Large variable-frequency drives use high-speed semiconductor switching, which produces high-frequency electrical components.

Correct EMC installation therefore depends on more than the drive’s internal filtering.

The complete system should also consider:

• Motor cable construction.
• Cable shielding.
• Grounding.
• Cabinet bonding.
• Cable separation.
• Control wiring.
• Communication wiring.
• Motor grounding.
• Cabinet entry points.

A well-designed EMC installation can help reduce electrical interference with nearby control and communication equipment.

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17. CM Jumper Removed

The CM jumper is removed in the specified configuration.

This is a configuration characteristic that should be considered together with the grounding arrangement and electrical system design.

The configuration should not be changed without considering the applicable installation requirements.

Grounding and common-mode behavior can affect both EMC performance and system compatibility.

For this reason, the CM jumper arrangement should be checked during commissioning and compared with the intended electrical system design.

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18. Dynamic Braking

The specified model has no dynamic braking.

This is an important consideration for applications involving high inertia or rapid deceleration.

When a motor decelerates, stored mechanical energy can be returned to the drive.

Depending on the application, this energy may need to be managed by a suitable braking or regenerative arrangement.

Applications that may require special attention include:

• Large conveyors.
• High-inertia fans.
• Centrifuges.
• Large rotating machines.
• Hoisting equipment.
• Vertical loads.
• Machinery requiring rapid stopping.

If rapid deceleration is required, the braking requirements should be calculated before finalizing the drive configuration.

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19. Product Introduction

The PowerFlex 755 series is designed for industrial applications where a basic variable-frequency drive is not sufficient.

The platform combines motor control with network communication, diagnostics, flexible configuration, and integration capabilities.

The 20G1ALD430AN0NNNNN represents a high-power configuration within this family.

Its 430 A output capacity and Frame 8 construction make it suitable for large industrial machines.

The model is particularly useful where the motor drive is an important part of a larger automation system.

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20. Typical Applications

Large Pumping Systems

The drive can be used with large industrial pumps where adjustable motor speed is required.

Typical applications include:

• Water transfer pumps.
• Booster pumps.
• Cooling-water pumps.
• Process pumps.
• Circulation pumps.
• Industrial pumping stations.

Variable-speed control allows the pump output to be adjusted according to process demand.

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Water and Wastewater

Water and wastewater facilities often use large motors for pumping, ventilation, and process equipment.

The drive can be applied to:

• Raw-water pumps.
• Transfer pumps.
• Booster pumps.
• Treatment pumps.
• Aeration-related equipment.
• Large ventilation systems.

Network communication is particularly useful when multiple drives are integrated into a centralized plant control system.

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Fans and Blowers

Large fans and blowers are another common application.

Examples include:

• Industrial ventilation.
• Exhaust systems.
• Dust collection.
• Furnace ventilation.
• Combustion air systems.
• Process cooling.
• Air-handling systems.

Variable-speed operation allows airflow to be adjusted without continuously operating the motor at full speed.

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Conveyors

Large conveyor systems can require significant motor torque.

The drive can provide controlled acceleration and speed regulation.

This is useful in:

• Mining.
• Cement.
• Aggregate handling.
• Warehousing.
• Ports.
• Manufacturing.
• Bulk material handling.

The actual drive rating should be selected according to the conveyor’s motor current, acceleration requirements, belt tension, incline, and load inertia.

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Mining Equipment

Mining equipment can place substantial demands on motor drives.

Potential applications include:

• Conveyors.
• Pumps.
• Fans.
• Material handling.
• Processing equipment.
• Crushing systems.

The drive’s high current capacity makes it suitable for large motors, although environmental protection and overload requirements must be evaluated carefully.

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Cement and Aggregate

Cement and aggregate processing plants use many high-power motors.

Typical equipment includes:

• Conveyors.
• Fans.
• Pumps.
• Crushers.
• Material handling systems.
• Process equipment.

The drive can be integrated into centralized plant automation systems through industrial communication.

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Pulp and Paper

Large pulp and paper facilities can use variable-speed drives for pumps, fans, rollers, conveyors, and other process machinery.

The PowerFlex 755 architecture is suitable for applications where coordinated control and network monitoring are required.

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Chemical and Process Industries

Process plants often require accurate control of pumps, fans, mixers, and other rotating machinery.

The drive can be integrated into a larger process-control system and monitored through industrial communication.

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21. Product Advantages

High Current Capacity

The 430 A output rating makes this model suitable for large industrial motors.

It provides substantially greater current capacity than compact machine-level drives.

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High Motor Power Capability

The drive supports up to approximately 400 HP in Low-Duty operation.

This places it in the large industrial motor-control category.

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Multiple Duty Ratings

The three duty classifications provide flexibility for different types of loads.

This allows the drive to be selected according to the actual overload characteristics of the machine.

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Embedded EtherNet/IP

The embedded communication capability makes it easier to integrate the drive into an industrial automation network.

This is especially useful when the drive needs to exchange data with a PLC or supervisory control system.

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Large Frame 8 Construction

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

It provides a suitable physical platform for large industrial drive installations.

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Forced-Air Cooling

The forced-air cooling arrangement supports continuous operation at high power when the installation provides appropriate ventilation.

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Flexible Industrial Applications

The drive can be used in a broad range of industries.

It is suitable for pumping, ventilation, material handling, process equipment, water treatment, mining, cement, and other industrial applications.

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Remote Control Capability

The no-HIM configuration works well in centralized control systems.

The drive can be managed through a PLC, HMI, network, or engineering workstation.

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22. Recommended Five Same-Series or Closely Related Models

The following models are closely related PowerFlex 755 configurations and can be considered when comparing power rating, current capacity, voltage class, and local operator-interface requirements.

Model	Series	Voltage	Current	LD Rating	ND Rating	HD Rating	Configuration
20G1ALD430JN0NNNNN	PowerFlex 755	480 VAC	430 A	400 HP	350 HP	300 HP	No HIM
20G1ALD430JN2NNNNN	PowerFlex 755	480 VAC	430 A	400 HP	350 HP	300 HP	HIM
20G1ALD430JN4NNNNN	PowerFlex 755	480 VAC	430 A	400 HP	350 HP	300 HP	Enhanced HIM
20G1ALD485JN0NNNNN	PowerFlex 755	480 VAC	485 A	450 HP	400 HP	350 HP	No HIM
20G1ALD545JN0NNNNN	PowerFlex 755	480 VAC	545 A	500 HP	450 HP	350 HP	No HIM

These models are useful when the application requires a similar PowerFlex 755 platform but different current capacity or local operator-interface functionality.

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23. Related Model: 20G1ALD430JN0NNNNN

The 20G1ALD430JN0NNNNN is a closely related configuration using the same 430 A electrical rating.

Parameter	Specification
Model	20G1ALD430JN0NNNNN
Series	PowerFlex 755
Voltage	480 VAC
Phase	3 Phase
Output Current	430 A
Low-Duty Rating	400 HP
Normal-Duty Rating	350 HP
Heavy-Duty Rating	300 HP
Cooling	Air Cooled
Frame	Frame 8
Enclosure	Type 1 / IP20
Installation	800 mm Deep MCC Style
Communication	Embedded EtherNet/IP
HIM	No HIM
Dynamic Braking	None
Dimensions	Large Frame 8
Weight	Configuration dependent

This is one of the most directly related configurations because the electrical rating remains the same while the ordering/configuration code changes.

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24. Related Model: 20G1ALD430JN2NNNNN

The 20G1ALD430JN2NNNNN retains the 430 A rating and provides a different local interface configuration.

Parameter	Specification
Model	20G1ALD430JN2NNNNN
Series	PowerFlex 755
Voltage	480 VAC
Phase	3 Phase
Output Current	430 A
Low-Duty Rating	400 HP
Normal-Duty Rating	350 HP
Heavy-Duty Rating	300 HP
Cooling	Air Cooled
Frame	Frame 8
Enclosure	Type 1 / IP20
Communication	Embedded EtherNet/IP
HIM	HIM Equipped
Installation	Floor Standing
Depth	800 mm class
Weight	Configuration dependent

This configuration is useful when operators need a local interface for commissioning, monitoring, or maintenance.

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25. Related Model: 20G1ALD430JN4NNNNN

The 20G1ALD430JN4NNNNN is another 430 A configuration with an enhanced operator interface.

Parameter	Specification
Model	20G1ALD430JN4NNNNN
Series	PowerFlex 755
Voltage	480 VAC
Phase	3 Phase
Output Current	430 A
Low-Duty Rating	400 HP
Normal-Duty Rating	350 HP
Heavy-Duty Rating	300 HP
Cooling	Air Cooled
Frame	Frame 8
Enclosure	Type 1 / IP20
Communication	Embedded EtherNet/IP
HIM	Enhanced LCD / Full Numeric
HIM Protection	IP66 / NEMA Type 4X/12 class
Installation	Floor Standing
Depth	800 mm class
Weight	Configuration dependent

This configuration is more suitable when a local enhanced operator interface is required.

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26. Related Model: 20G1ALD485JN0NNNNN

The 20G1ALD485JN0NNNNN increases the output current to approximately 485 A.

Parameter	Specification
Model	20G1ALD485JN0NNNNN
Series	PowerFlex 755
Voltage	480 VAC
Phase	3 Phase
Output Current	485 A
Low-Duty Rating	450 HP
Normal-Duty Rating	400 HP
Heavy-Duty Rating	350 HP
Cooling	Air Cooled
Frame	Frame 8
Enclosure	Type 1 / IP20
Communication	Embedded EtherNet/IP
HIM	No HIM
Installation	MCC Style
Depth	800 mm class
Weight	Configuration dependent

This model can be considered where the motor requires more current than the 430 A configuration can provide.

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27. Related Model: 20G1ALD545JN0NNNNN

The 20G1ALD545JN0NNNNN provides a higher 545 A output-current rating.

Parameter	Specification
Model	20G1ALD545JN0NNNNN
Series	PowerFlex 755
Voltage	480 VAC
Phase	3 Phase
Output Current	545 A
Low-Duty Rating	500 HP
Normal-Duty Rating	450 HP
Heavy-Duty Rating	350 HP
Cooling	Air Cooled
Frame	Frame 8
Enclosure	Type 1 / IP20
Communication	Embedded EtherNet/IP
HIM	No HIM
Installation	Floor Standing
Depth	800 mm class
Weight	Configuration dependent

This model provides additional current capacity for larger 480 VAC motors.

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28. Five Same-Brand Popular Models for Comparison

The following models represent different segments of the Allen-Bradley PowerFlex family and can be useful for comparing drive size and application range.

Model	Series	Voltage Class	Current / Power Class	Typical Application
25B-D010N104	PowerFlex 525	480 VAC Class	10 A Class	Compact machine control
25C-D010N103	PowerFlex 527	480 VAC Class	10 A Class	Machine automation
20F11NC2P1JA0NNNNN	PowerFlex 753	480 VAC Class	Small/Medium	Industrial motor control
20F11NC8P0JA0NNNNN	PowerFlex 753	480 VAC Class	Medium	Industrial machinery
20G1ALD430AN0NNNNN	PowerFlex 755	480 VAC	430 A	Large industrial motor control

These five models cover a broad range of motor-control applications.

The PowerFlex 525 and PowerFlex 527 are more compact solutions, while the PowerFlex 753 and PowerFlex 755 platforms are intended for larger and more sophisticated industrial applications.

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29. PowerFlex 525 Comparison

The 25B-D010N104 is a compact PowerFlex 525 drive.

It belongs to a much smaller drive class than the 20G1ALD430AN0NNNNN.

Parameter	25B-D010N104	20G1ALD430AN0NNNNN
Series	PowerFlex 525	PowerFlex 755
Application Scale	Compact	Large Industrial
Current Class	Approximately 10 A	430 A
Voltage Class	480 VAC Class	480 VAC
Installation	Compact	Floor Standing
Frame	Small	Frame 8
Cooling	Compact Drive Cooling	Forced Air
Communication	Industrial Network Capable	Embedded EtherNet/IP
Motor Size	Small / Medium	Large
Dimensions	Compact	Large
Weight	Several kg class	Hundreds of kg class for complete installation

The two products address very different motor sizes and installation environments.

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30. PowerFlex 527 Comparison

The 25C-D010N103 belongs to the PowerFlex 527 family.

It is intended primarily for machine-level automation and coordinated motor-control applications.

Parameter	25C-D010N103	20G1ALD430AN0NNNNN
Series	PowerFlex 527	PowerFlex 755
Voltage Class	480 VAC Class	480 VAC
Current Class	Low Current	430 A
Installation	Compact	Floor Standing
Frame	Compact	Frame 8
Application	Machine Automation	Large Industrial
Cooling	Compact	Forced Air
Communication	Networked Control	Embedded EtherNet/IP
HIM	Configuration Dependent	No HIM
Dimensions	Compact	Large
Weight	Low	High

The 20G1ALD430AN0NNNNN is intended for significantly larger motors and industrial installations.

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31. PowerFlex 753 Comparison

The 20F11NC2P1JA0NNNNN belongs to the PowerFlex 753 family.

It provides an intermediate solution between compact machine drives and the large Frame 8 PowerFlex 755 configurations.

Parameter	20F11NC2P1JA0NNNNN	20G1ALD430AN0NNNNN
Series	PowerFlex 753	PowerFlex 755
Voltage Class	480 VAC Class	480 VAC
Current	Lower Current Class	430 A
Installation	Panel / Cabinet	Floor Standing
Frame	Smaller	Frame 8
Cooling	Air Cooled	Forced Air
Communication	Network Options	Embedded EtherNet/IP
Application	Industrial Motor Control	Large Industrial Motor Control
Dimensions	Smaller	Large
Weight	Lower	Approximately hundreds of kg

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32. PowerFlex 753 Higher-Current Comparison

The 20F11NC8P0JA0NNNNN is another PowerFlex 753 configuration that can be considered for industrial motor control.

Parameter	20F11NC8P0JA0NNNNN	20G1ALD430AN0NNNNN
Series	PowerFlex 753	PowerFlex 755
Voltage Class	480 VAC Class	480 VAC
Current Class	Medium	430 A
Application	Industrial	Large Industrial
Installation	Panel / Cabinet	Floor Standing
Cooling	Air Cooled	Forced Air
Communication	Network Options	Embedded EtherNet/IP
Local Interface	Configuration Dependent	No HIM
Dimensions	Smaller	Large Frame 8
Weight	Lower	High

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33. Model Comparison Within the 480 VAC PowerFlex 755 Family

Model	Voltage	Current	LD Rating	ND Rating	HD Rating	HIM Configuration
20G1ALD430AN0NNNNN	480 VAC	430 A	400 HP	350 HP	300 HP	No HIM
20G1ALD430JN0NNNNN	480 VAC	430 A	400 HP	350 HP	300 HP	No HIM
20G1ALD485JN0NNNNN	480 VAC	485 A	450 HP	400 HP	350 HP	No HIM
20G1ALD545JN0NNNNN	480 VAC	545 A	500 HP	450 HP	350 HP	No HIM
20G1ALD617JN0NNNNN	480 VAC	617 A	600 HP	500 HP	400 HP	No HIM
20G1ALD710JN0NNNNN	480 VAC	710 A	650 HP	600 HP	450 HP	No HIM
20G1ALD740JN0NNNNN	480 VAC	740 A	Higher Power Class	Higher Power Class	Higher Power Class	No HIM

This progression illustrates how the PowerFlex 755 family can cover increasingly large motor loads while retaining the same general high-power architecture.

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34. Dimensions and Weight

The 20G1ALD430AN0NNNNN is a large Frame 8 drive.

For preliminary equipment layout, the following values can be used as planning estimates:

Mechanical Parameter	Approximate Value
Model	20G1ALD430AN0NNNNN
Frame	Frame 8
Installation Type	Floor Standing
Cabinet Style	MCC Style
Width	Approximately 600 mm
Height	Approximately 2,000–2,400 mm
Depth	800 mm
Approximate Weight	Approximately 500–650 kg
Cooling	Forced Air
Enclosure	Type 1 / IP20

These values should not be treated as fabrication dimensions.

A complete high-power drive assembly can include additional structures, power components, disconnects, busbars, cable compartments, mounting hardware, and other options.

Consequently, the final overall dimensions and weight can differ from the preliminary planning values.

For transportation, lifting, floor-loading calculations, cabinet construction, and installation work, the final configuration-specific mechanical documentation should always control.

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35. Installation Requirements

The installation of a 430 A Frame 8 drive requires considerably more planning than the installation of a compact drive.

The following items should be considered:

• Incoming power protection.
• Input cable sizing.
• Motor cable sizing.
• Grounding.
• EMC requirements.
• Cabinet ventilation.
• Electrical-room temperature.
• Cable bending radius.
• Cable entry.
• Maintenance clearance.
• Lifting arrangements.
• Floor loading.
• Network cabling.
• Control wiring.
• Motor compatibility.
• Braking requirements.

The equipment should also be installed where it is protected from direct water exposure and excessive contamination.

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36. Cable Selection

Cable selection should be based on the actual operating current, installation method, ambient temperature, allowable temperature rise, voltage drop, applicable electrical regulations, and motor requirements.

For a drive of this size, cable termination quality is particularly important.

Loose or improperly installed high-current connections can produce significant heat.

Motor cables should also be routed carefully to reduce electromagnetic interference.

Control and communication wiring should preferably be separated from high-power motor cables.

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37. Grounding and EMC

Correct grounding is essential for reliable drive operation.

The drive cabinet, motor frame, protective earth, and associated electrical equipment should be bonded correctly.

The EMC design should include both the drive and the complete motor installation.

Important considerations include:

• Motor cable shielding.
• Grounding points.
• Cabinet bonding.
• Cable routing.
• Control cable separation.
• Communication cable routing.
• Motor frame grounding.
• Input filter configuration.
• CM jumper configuration.

The specified model has the CM jumper removed, so this characteristic should be retained in the final electrical design unless the application requires another approved configuration.

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38. Motor Compatibility

Before installing the drive, the motor nameplate should be checked.

Important motor information includes:

• Rated voltage.
• Rated current.
• Rated frequency.
• Rated speed.
• Motor power.
• Service factor.
• Insulation system.
• Motor construction.
• Encoder requirements.
• Load type.

The motor’s full-load current should be compared with the drive’s applicable duty rating.

The drive should not be selected based solely on the nominal HP value.

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39. Load-Type Selection

The load type has a major effect on drive selection.

Variable-Torque Loads

Typical examples include:

• Pumps.
• Fans.
• Blowers.

These applications often have relatively favorable torque characteristics.

Constant-Torque Loads

Typical examples include:

• Conveyors.
• Mixers.
• Material handling.
• Process machines.

These applications can require more substantial torque during acceleration and operation.

High-Inertia Loads

Typical examples include:

• Large fans.
• Centrifuges.
• Large rotating equipment.

These applications require special attention to acceleration and deceleration.

Regenerative Loads

Applications where the motor frequently returns energy to the drive require additional consideration.

The specified configuration has no dynamic braking, so regenerative energy management must be evaluated at the system-design stage.

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40. Maintenance Considerations

Regular maintenance is important for a high-power air-cooled drive.

Recommended maintenance activities can include:

• Checking ventilation paths.
• Inspecting cooling fans.
• Removing accumulated dust.
• Checking electrical connections.
• Inspecting cable terminations.
• Reviewing fault history.
• Reviewing alarm history.
• Checking cabinet temperature.
• Inspecting grounding connections.
• Checking network connections.
• Inspecting signs of overheating.

The cooling system deserves particular attention.

Dust buildup can restrict airflow and reduce cooling performance.

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41. Commissioning Procedure

A typical commissioning process should include:

1. Confirm the exact drive model.
2. Confirm the incoming voltage.
3. Confirm the motor nameplate data.
4. Verify protective equipment.
5. Check grounding.
6. Inspect power wiring.
7. Inspect motor wiring.
8. Check control wiring.
9. Verify network communication.
10. Confirm cooling airflow.
11. Configure motor parameters.
12. Configure acceleration and deceleration.
13. Confirm minimum and maximum speed.
14. Check motor rotation.
15. Test start and stop commands.
16. Verify fault response.
17. Test network control.
18. Confirm process feedback.
19. Record final parameters.

For a drive of this size, commissioning should be performed by appropriately qualified personnel.

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42. No-HIM Versus HIM Options

The related configurations provide several different local-interface choices.

Feature	20G1ALD430AN0NNNNN	20G1ALD430JN2NNNNN	20G1ALD430JN4NNNNN
Voltage	480 VAC	480 VAC	480 VAC
Output Current	430 A	430 A	430 A
Low Duty	400 HP	400 HP	400 HP
Normal Duty	350 HP	350 HP	350 HP
Heavy Duty	300 HP	300 HP	300 HP
Frame	8	8	8
EtherNet/IP	Yes	Yes	Yes
Local HIM	None	HIM	Enhanced HIM
Installation	Floor Standing	Floor Standing	Floor Standing
Depth	800 mm class	800 mm class	800 mm class
Weight	Configuration dependent	Configuration dependent	Configuration dependent

The no-HIM configuration is particularly appropriate for centralized control.

The HIM-equipped versions provide more convenient local access for commissioning and maintenance.

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43. Advantages for Centralized Automation

The no-HIM design can be particularly effective in modern automated plants.

A centralized PLC or supervisory system can provide the operator interface while the drive remains inside the electrical room.

This can reduce the need for local operator hardware at every individual drive.

Through the industrial network, the control system can monitor:

• Drive status.
• Motor current.
• Speed.
• Frequency.
• Fault conditions.
• Alarm conditions.
• Operating state.

This approach can be useful when many large drives are installed throughout a plant.

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44. Advantages for Large Industrial Equipment

The 20G1ALD430AN0NNNNN is designed around a high-power industrial architecture.

Its 430 A current capacity allows it to control motors significantly larger than those handled by compact machine drives.

The large Frame 8 structure also provides the physical capacity needed for high-power components and associated cooling requirements.

The result is a drive suited to substantial industrial equipment rather than small standalone machinery.

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45. Recommended Application Matching

Application	Recommended Consideration
Large Pump	Very suitable when current and duty ratings match
Large Fan	Suitable for continuous variable-speed operation
Blower	Suitable with appropriate process and thermal design
Conveyor	Suitable when torque and acceleration requirements are within rating
Water Treatment	Suitable for large pumping equipment
Wastewater	Suitable for pumps and large ventilation systems
Mining	Suitable with appropriate environmental protection
Cement	Suitable for large process equipment
Aggregate	Suitable for conveyors and process machinery
Pulp and Paper	Suitable for large process motors
Chemical Processing	Suitable for large pumps and process equipment
High-Inertia Machine	Requires detailed braking analysis
Hoisting	Requires detailed braking and safety analysis

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46. Product Selection Checklist

Selection Item	Specification
Brand	Allen-Bradley
Series	PowerFlex 755
Exact Model	20G1ALD430AN0NNNNN
Input Voltage	480 VAC
Input Phase	3 Phase
Output Current	430 A
Low-Duty Rating	400 HP
Normal-Duty Rating	350 HP
Heavy-Duty Rating	300 HP
Cooling	Forced Air
Frame	Frame 8
Enclosure	Type 1 / IP20
Installation	Floor Standing
MCC Depth	800 mm
Communication	Embedded EtherNet/IP
HIM	No HIM
EMC	Filtered
CM Jumper	Removed
Dynamic Braking	None
DC Terminals	None
Input	AC Input with Precharge
Approximate Width	600 mm
Approximate Height	2,000–2,400 mm
Depth	800 mm
Approximate Weight	500–650 kg
Main Applications	Pumps, Fans, Blowers, Conveyors, Process Equipment

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47. Overall Product Advantages

The Allen-Bradley 20G1ALD430AN0NNNNN combines high current capacity, industrial communication, large-frame construction, and flexible motor-control functionality in one high-power drive platform.

Its 430 A output rating makes it appropriate for large industrial motors.

Its 400 HP Low-Duty rating provides substantial motor capacity for variable-speed industrial equipment.

The 480 VAC three-phase configuration makes it suitable for many large industrial electrical systems.

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

The Frame 8, 800 mm deep MCC-style construction provides a practical physical platform for high-power installations.

The forced-air cooling system is designed for high-power operation when the installation provides adequate ventilation.

The no-HIM configuration is particularly useful for centralized control systems where local drive interaction is not required.

The filtered EMC arrangement also supports integration into industrial electrical systems where electromagnetic compatibility is an important design consideration.

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48. Final Technical Specification

Category	Specification
Brand	Allen-Bradley
Product Series	PowerFlex 755
Model	20G1ALD430AN0NNNNN
Product Type	High-Power AC Variable Frequency Drive
Input Voltage	480 VAC
Input Phase	3 Phase
Output Current	430 A
Low-Duty Rating	400 HP
Normal-Duty Rating	350 HP
Heavy-Duty Rating	300 HP
Low-Duty Equivalent	Approximately 298 kW
Normal-Duty Equivalent	Approximately 261 kW
Heavy-Duty Equivalent	Approximately 224 kW
Cooling	Forced Air
Frame	Frame 8
Enclosure	Type 1 / IP20
Installation	Floor Standing
MCC Style	800 mm Deep
Communication	Embedded EtherNet/IP
HIM	Blank / No HIM
Input	AC Input with Precharge
DC Terminals	None
EMC	Filtered
CM Jumper	Removed
Dynamic Braking	None
Approximate Width	About 600 mm
Approximate Height	About 2,000–2,400 mm
Depth	800 mm
Approximate Weight	About 500–650 kg
Typical Applications	Pumps, Fans, Blowers, Conveyors, Process Equipment, Mining, Water Treatment, Cement
Installation Environment	Protected Industrial Electrical Area

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49. Final Product Description

The Allen-Bradley 20G1ALD430AN0NNNNN PowerFlex 755 AC Drive is a high-power industrial variable-frequency drive intended for large three-phase motor applications.

With a 480 VAC three-phase input configuration, 430 A output current rating, 400 HP Low-Duty rating, 350 HP Normal-Duty rating, and 300 HP Heavy-Duty rating, it is designed for substantial industrial motor-control requirements.

Its Frame 8, forced-air-cooled, 800 mm deep MCC-style construction makes it suitable for floor-standing electrical installations and large industrial control systems.

The drive’s embedded EtherNet/IP communication allows it to become part of a larger automation architecture rather than operating as an isolated motor controller.

The blank/no-HIM configuration makes the model particularly suitable for centralized automation systems in which drive operation and monitoring are handled through a PLC, HMI, supervisory system, or engineering workstation.

The model can be used for large pumps, fans, blowers, conveyors, water-treatment equipment, wastewater systems, mining machinery, cement equipment, process machinery, and other large industrial rotating equipment.

The filtered EMC configuration and CM jumper removed arrangement should be considered as part of the overall electrical-system design, particularly where multiple drives, sensitive control equipment, and industrial communication networks share the same facility.

Because the unit is a large Frame 8 drive, mechanical planning is important. The 800 mm depth should be considered when preparing the MCC or electrical-room layout. Preliminary planning values of approximately 600 mm width, 2,000–2,400 mm height, 800 mm depth, and 500–650 kg weight can be used for early layout work, but the final configuration-specific mechanical information should be used for fabrication, transportation, lifting, and installation.

The drive’s actual suitability should ultimately be determined from the motor nameplate current, duty cycle, load characteristics, acceleration requirements, braking requirements, ambient conditions, cable system, grounding arrangement, and communication architecture.

For applications requiring a high-capacity 480 VAC variable-speed drive with a large industrial frame, network integration, and centralized control capability, the 20G1ALD430AN0NNNNN represents a substantial PowerFlex 755 configuration intended for demanding industrial motor-control systems.