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20G1ABD485AN0NNNNN — PowerFlex 755 Air-Cooled AC Drive

1. Product Overview

The 20G1ABD485AN0NNNNN is a high-power industrial AC variable-frequency drive belonging to the PowerFlex 755 series and the broader PowerFlex 750-Series product family.

It is designed for large three-phase motor applications where high current capacity, variable-speed operation, controlled acceleration and deceleration, industrial networking and centralized automation are required.

This model is configured for 480 VAC, three-phase input and provides a 485 A continuous output-current rating.

Its published duty ratings are approximately 450 HP for Light Duty, 400 HP for Normal Duty and 350 HP for Heavy Duty. The Normal Duty rating corresponds to approximately 300 kW, placing the drive in the high-power industrial motor-control category.

The model uses an air-cooled Frame 8 construction, a 600 mm deep MCC-style enclosure, AC input with precharge, no DC input terminals, integrated EtherNet/IP communication, filtering and a blank configuration with no HIM.

The absence of a HIM makes this version particularly suitable for applications where the drive is operated and monitored from a PLC, HMI, SCADA system or centralized plant-control network.

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2. Brand and Product Series

Classification	Specification
Brand	Allen-Bradley
Product Family	PowerFlex 750-Series
Product Series	PowerFlex 755
Product Type	Air-Cooled AC Packaged Drive
Drive Category	High-Power Variable-Frequency AC Drive
Model	20G1ABD485AN0NNNNN
Input Voltage	480 VAC
Input Phase	3 Phase
Output Current	485 A
Frame	Frame 8
Cooling	Forced Air
Communication	Embedded EtherNet/IP
HIM	None / Blank
Enclosure	Type 1 / IP20
Cabinet Style	600 mm Deep MCC Style
Input Arrangement	AC Input with Precharge
DC Input Terminals	None

The PowerFlex 755 series is intended for larger industrial applications where a combination of motor control, networking, diagnostics and application flexibility is required.

The platform is suitable for both discrete machinery and continuous-process installations.

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3. Main Technical Parameters

Parameter	Specification
Model	20G1ABD485AN0NNNNN
Brand	Allen-Bradley
Product Family	PowerFlex 750-Series
Product Series	PowerFlex 755
Product Type	AC Packaged Drive
Input Voltage	480 VAC
Input Phase	3 Phase
Voltage Class	480 VAC / 650 VDC
Output Current	485 A
Light Duty Rating	450 HP
Normal Duty Rating	400 HP
Heavy Duty Rating	350 HP
Approx. Light Duty Power	336 kW
Approx. Normal Duty Power	298 kW
Approx. Heavy Duty Power	261 kW
Frame Size	Frame 8
Cooling	Forced Air / Air Cooled
Input Type	AC Input with Precharge
DC Input Terminals	None
Dynamic Braking	None in standard configuration
Filtering	EMC / Input Filtering
CM Jumper	Removed
Communication	Embedded EtherNet/IP
HIM	None
Enclosure	Type 1 / IP20
Cabinet Style	600 mm Deep MCC Style
Mounting	Floor / Cabinet Installation
Approx. Weight	Approximately 600–623 kg
Approx. Dimensions	Approximately 2100 × 610 × 465 mm class
Frame	Frame 8
Main Application	Large Industrial AC Motor Control

The exact physical dimensions can depend on the final mechanical arrangement, cabinet configuration and installation method.

For transportation and floor-loading calculations, the drive should be treated as a large 600 kg-class industrial assembly.

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4. Electrical Specifications

Electrical Parameter	Specification
Model	20G1ABD485AN0NNNNN
Input Voltage	480 VAC
Input Phase	3 Phase
DC Voltage Class	650 VDC
Continuous Output Current	485 A
Light Duty Current Class	485 A class
Normal Duty Current Class	430 A class
Heavy Duty Current Class	370 A class
Light Duty Power	450 HP
Normal Duty Power	400 HP
Heavy Duty Power	350 HP
Light Duty Power	Approximately 336 kW
Normal Duty Power	Approximately 298 kW
Heavy Duty Power	Approximately 261 kW
Input Frequency	50/60 Hz class
Input Configuration	AC Input with Precharge
DC Input Terminals	None
Cooling	Forced Air
Filtering	Installed
CM Jumper	Removed
Dynamic Braking	None
Communication	Embedded EtherNet/IP
Frame	Frame 8
Enclosure	IP20 / NEMA Type 1

The 485 A rating makes this model one of the larger standard Frame 8 PowerFlex 755 configurations.

When selecting a drive for an actual motor, the motor’s full-load current should be checked against the drive current rating rather than relying solely on the motor horsepower.

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5. Duty Ratings

The drive supports three major duty classifications.

Duty Classification	Power Rating	Approx. Metric Equivalent	Typical Load
Light Duty	450 HP	~336 kW	Variable-torque applications
Normal Duty	400 HP	~298 kW	General industrial loads
Heavy Duty	350 HP	~261 kW	High-torque applications

The difference between these ratings is important when selecting a drive.

A large centrifugal fan may require less overload capability than a conveyor or mixer.

A conveyor may experience high acceleration torque, while a fan may operate primarily at a relatively stable load.

Therefore, the appropriate drive rating should be selected according to the complete load profile.

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6. Product Configuration

The catalog number 20G1ABD485AN0NNNNN represents a particular combination of electrical, mechanical and interface options.

Configuration Item	Specification
Model	20G1ABD485AN0NNNNN
Product Series	PowerFlex 755
Voltage	480 VAC
Phase	3 Phase
Output Current	485 A
Frame	Frame 8
Cooling	Air Cooled
Input	AC Input with Precharge
DC Input	None
Enclosure	Type 1 / IP20
Cabinet Depth	600 mm
Filtering	EMC Filter
CM Jumper	Removed
Dynamic Braking	None
HIM	None
Communication	Embedded EtherNet/IP
Installation	Industrial Cabinet / MCC

The AN0 configuration is particularly useful when local operation through a HIM is not required.

In this arrangement, normal operation can be controlled from the plant automation system.

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7. No-HIM Configuration

The absence of a HIM is one of the defining characteristics of this model.

The drive is therefore well suited to centralized automation architectures.

A typical arrangement can be:

PLC → EtherNet/IP → PowerFlex 755 → Motor

The PLC or supervisory system can provide:

• Start and stop commands
• Speed reference
• Direction control
• Operating status
• Fault monitoring
• Alarm monitoring
• Parameter management
• Process feedback

This configuration can be particularly useful when the drive is installed inside a larger electrical cabinet or MCC and is not intended to be operated locally by production personnel.

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8. Product Introduction

The 20G1ABD485AN0NNNNN is designed to control large three-phase AC motors at variable speeds.

Instead of operating a motor at one fixed speed, the drive can adjust the motor’s operating speed according to process requirements.

This can provide much better control of large mechanical equipment.

For example, a pump does not necessarily need to operate at full speed at all times.

A fan may only need a portion of its maximum airflow during certain production conditions.

A conveyor may require different speeds depending on material flow.

A process machine may require controlled acceleration and deceleration.

The drive provides the electrical interface between the plant power system and the motor while also connecting the motor-control system to the plant automation network.

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9. High-Power 480 VAC Architecture

The 480 VAC, three-phase configuration is intended for substantial industrial motor systems.

The high current rating makes this model suitable for motors requiring significant electrical capacity.

The drive is particularly appropriate for installations where a large motor is controlled as part of a larger automation system.

Typical facilities may include:

• Manufacturing plants
• Water-treatment facilities
• Process plants
• Mining facilities
• Cement plants
• Steel facilities
• Material-handling systems
• Large HVAC installations
• Industrial utility systems

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10. Main Product Advantages

10.1 485 A Output Capacity

The 485 A output rating provides considerable motor-control capacity.

This allows the drive to be used with large motors without dividing the application among multiple smaller drives.

For large process equipment, this can simplify the electrical architecture.

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10.2 400 HP Normal Duty Rating

The approximately 400 HP Normal Duty rating makes the drive appropriate for large continuous industrial loads.

It is suitable for applications where the motor operates for extended periods and the load profile does not require the higher overload conditions associated with Heavy Duty applications.

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10.3 350 HP Heavy Duty Rating

The approximately 350 HP Heavy Duty capability makes the drive appropriate for more demanding applications.

Examples include:

• Heavy conveyors
• Large mixers
• High-inertia equipment
• Material-handling systems
• Process machinery
• Large mechanical loads

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10.4 450 HP Light Duty Rating

The approximately 450 HP Light Duty rating provides additional capacity for appropriate variable-torque applications.

This can be useful for large centrifugal fans and pumps when the actual load characteristics are compatible with the Light Duty rating.

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10.5 Embedded EtherNet/IP

Integrated EtherNet/IP provides a convenient way to connect the drive to a plant automation network.

This can reduce the need for separate communication hardware and makes the drive easier to integrate into centralized control systems.

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10.6 No-HIM Configuration

For highly automated plants, a local operator interface may not be necessary.

The AN0 configuration allows the drive to be controlled from a central PLC, HMI or SCADA system.

This can be useful when the drive is installed in a dedicated electrical room and local production operators are not expected to operate it directly.

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10.7 Frame 8 High-Power Construction

The Frame 8 design provides the physical capacity required for high-power industrial motor control.

The drive is intended for substantial industrial installations rather than compact machine-control cabinets.

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11. Applications

11.1 Large Water Pumps

Large water pumps can require several hundred horsepower.

The drive can vary motor speed according to:

• Water demand
• Flow requirement
• Pressure requirement
• Process conditions
• Cooling requirements

Typical applications include:

• Water treatment
• Wastewater
• Industrial water circulation
• Cooling-water systems
• Process-water systems
• Pumping stations

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12. Large Fans

Large fans are another suitable application.

Fan speed can be adjusted according to actual airflow requirements.

Typical applications include:

• Furnace ventilation
• Industrial exhaust
• Cooling systems
• Process ventilation
• Dust collection
• Large air-handling systems

Variable-speed operation can provide better process control than simply switching a full-speed motor on and off.

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13. Industrial Blowers

Industrial blowers often require significant motor power.

The drive can regulate blower speed according to process requirements.

Potential applications include:

• Wastewater aeration
• Combustion air
• Pneumatic conveying
• Process-air systems
• Industrial ventilation
• Material processing

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14. Conveyors

The high current capacity makes the drive suitable for large conveyor systems.

Conveyors may have substantial mechanical inertia, particularly when carrying heavy materials.

Controlled acceleration and deceleration can reduce mechanical shock.

Typical applications include:

• Mining
• Cement
• Aggregate
• Steel
• Bulk material handling
• Ports
• Industrial production lines

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15. Compressors

Large compressors can also benefit from variable-speed motor control.

The drive can provide controlled motor acceleration and operating-speed adjustment while exchanging operating information with the plant automation system.

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16. Mixers and Process Machinery

Large mixers can experience changing mechanical loads.

The drive can adjust motor speed according to the production process.

This is useful for:

• Chemical processing
• Material mixing
• Food processing
• Industrial production
• Bulk material preparation
• Manufacturing systems

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17. Application Suitability

Application	Suitability	Main Benefit
Large Water Pump	Excellent	High-current variable-speed control
Cooling Pump	Excellent	Process flow regulation
Large Fan	Excellent	Airflow control
Industrial Blower	Excellent	Variable-speed process control
Conveyor	Excellent	Controlled acceleration
Mining Conveyor	Excellent	Large motor capacity
Compressor	Good	Speed control
Mixer	Good	Speed and torque control
Process Machinery	Excellent	Centralized automation
Large HVAC	Excellent	Variable airflow
Small Pump	Oversized	Lower-power drive normally preferable
Small Fan	Oversized	Lower-power drive normally preferable
Small Machine	Oversized	Excessive power capacity

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18. Communication and Automation

The embedded EtherNet/IP interface is an important feature for modern industrial installations.

Communication Function	Capability
Model	20G1ABD485AN0NNNNN
Embedded EtherNet/IP	Yes
PLC Integration	Supported
HMI Integration	Supported
SCADA Integration	Supported
Remote Start / Stop	Supported
Speed Reference	Supported
Frequency Reference	Supported
Drive Status	Supported
Fault Information	Supported
Alarm Information	Supported
Diagnostic Data	Supported
Parameter Access	Supported
Remote Monitoring	Supported

A plant can therefore monitor the drive without requiring an operator to stand next to the electrical cabinet.

This is especially useful when the drive is installed in a centralized motor-control area.

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19. Control Capability

The PowerFlex 755 architecture supports different motor-control approaches.

Depending on the application configuration, the drive can be used for:

• V/Hz control
• Sensorless vector control
• Closed-loop vector control
• Speed regulation
• Torque regulation
• Process PID control
• Motor acceleration
• Motor deceleration

The appropriate control mode depends on the motor type and application requirements.

For simple fan applications, a relatively straightforward control strategy may be adequate.

For applications requiring accurate torque or speed regulation, a more advanced control strategy may be selected.

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20. Physical Dimensions and Weight

Because this is a Frame 8 high-power drive, the physical installation requirements are substantial.

Mechanical Parameter	Specification
Model	20G1ABD485AN0NNNNN
Frame	Frame 8
Enclosure	Type 1 / IP20
Cabinet Style	600 mm Deep MCC Style
Approx. Height	~2100 mm class
Approx. Width	~610 mm class
Approx. Depth	~465 mm drive-envelope class
Approx. Dimensions	~2100 × 610 × 465 mm
Approx. Weight	Approximately 600–623 kg
Cooling	Forced Air
Mounting	Floor / Cabinet
Installation Orientation	Upright
HIM	None
Service Access	Front Access

The exact physical dimensions should be checked against the mechanical drawing for the specific installation.

The complete MCC arrangement may require more space than the drive body itself because of:

• Power cables
• Control wiring
• Ethernet connections
• Cooling airflow
• Service access
• Door movement
• Lifting equipment

The weight is substantial enough that transportation and lifting arrangements should be planned before installation.

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21. Weight Considerations

The drive is approximately in the 600–623 kg weight range depending on the exact physical configuration and how the unit is measured.

Weight Parameter	Approximate Value
Model	20G1ABD485AN0NNNNN
Product Weight	Approximately 600–623 kg
Alternative Listed Weight	Approximately 623 kg
Approx. Imperial Equivalent	~1,320–1,375 lb
Installation Class	Heavy Industrial Equipment

The shipping package may weigh more than the bare equipment.

For floor design and transportation, the packaged weight should be verified separately.

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22. Cooling System

The drive is air cooled.

The cooling fans remove heat generated by the power electronics during operation.

Adequate airflow is therefore important.

Cooling Item	Consideration
Model	20G1ABD485AN0NNNNN
Cooling Type	Forced Air
Cooling Fans	Required
Airflow	Must remain unobstructed
Cabinet Ventilation	Required
Dust	Should be minimized
Fan Condition	Inspect periodically
Thermal Condition	Monitor during service
Hot-Air Recirculation	Should be avoided
Cabinet Temperature	Must remain within operating limits

An electrical room containing multiple high-power drives should also be designed to prevent excessive accumulation of heat.

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23. Installation Requirements

Installation Factor	Requirement / Consideration
Input Power	480 VAC, three phase
Floor Loading	Must support approximately 600+ kg
Mounting	Secure industrial mounting
Orientation	Upright
Ventilation	Adequate
Cooling Air	Keep unobstructed
Cable Routing	Provide sufficient space
Grounding	Proper industrial grounding
Environment	Suitable industrial environment
Dust	Avoid excessive contamination
Moisture	Avoid unsuitable exposure
Service Access	Adequate access required
Lifting	Heavy-duty lifting equipment may be necessary

The electrical installation should also provide suitable overcurrent protection, disconnecting arrangements, grounding and motor-cable sizing according to the project design.

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24. Maintenance

A high-power drive should be included in a planned preventive-maintenance program.

Maintenance Item	Recommended Inspection
Cooling Fans	Check operation
Fan Noise	Check for abnormal changes
Airflow	Keep unobstructed
Cabinet Interior	Inspect for dust
Power Terminals	Check for overheating
Motor Cable	Inspect insulation and termination
Grounding	Check periodically
Control Wiring	Inspect connections
Ethernet Network	Check communication stability
Fault History	Review repeated faults
Cabinet Ventilation	Check airflow
Mechanical Load	Check for abnormal vibration
Motor	Check operating condition

Repeated drive faults should be investigated rather than simply reset.

For high-power equipment, an electrical fault can sometimes be the result of a mechanical problem, motor problem or process overload.

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25. Major Advantages in Industrial Plants

The 20G1ABD485AN0NNNNN is particularly suitable for large centralized industrial systems.

Its high current rating allows substantial motors to be controlled from a single drive.

Its network interface allows the drive to communicate with the plant automation system.

Its no-HIM configuration simplifies installations where local operator control is unnecessary.

Its Frame 8 construction provides the physical capacity required for large industrial applications.

Its flexible motor-control architecture allows the drive to be adapted to different mechanical loads.

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26. Five Recommended Models from the Same Series or Related Models

The following models are useful alternatives within the PowerFlex 755 high-power range.

Model	Series	Voltage	Current	Light Duty	Normal Duty	Heavy Duty	HIM	Frame	Approx. Weight kg
20G1ABD430AN0NNNNN	PowerFlex 755	480 VAC	430 A	400 HP	350 HP	300 HP	None	8	~620–635
20G1ABD430AN2NNNNN	PowerFlex 755	480 VAC	430 A	400 HP	350 HP	300 HP	Enhanced LCD	8	~620–635
20G1ABD430AN4NNNNN	PowerFlex 755	480 VAC	430 A	400 HP	350 HP	300 HP	Door Mounted	8	~620–635
20G1ABD485AN2NNNNN	PowerFlex 755	480 VAC	485 A	450 HP	400 HP	350 HP	Enhanced LCD	8	~600–623
20G1ABD545AN0NNNNN	PowerFlex 755	480 VAC	545 A	500 HP	450 HP	350 HP	None	8	Configuration dependent

The 20G1ABD430AN0NNNNN is a lower-current alternative, while the 20G1ABD485AN2NNNNN provides the same basic voltage class with higher current capacity and local operator access.

The 545 A configuration is appropriate when the motor requires additional current capacity.

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27. Related Model Comparison

Parameter	20G1ABD430AN0NNNNN	20G1ABD430AN2NNNNN	20G1ABD430AN4NNNNN	20G1ABD485AN2NNNNN	20G1ABD545AN0NNNNN
Series	PowerFlex 755	PowerFlex 755	PowerFlex 755	PowerFlex 755	PowerFlex 755
Input	480 VAC	480 VAC	480 VAC	480 VAC	480 VAC
Phase	3 Phase	3 Phase	3 Phase	3 Phase	3 Phase
Current	430 A	430 A	430 A	485 A	545 A
Light Duty	400 HP	400 HP	400 HP	450 HP	500 HP
Normal Duty	350 HP	350 HP	350 HP	400 HP	450 HP
Heavy Duty	300 HP	300 HP	300 HP	350 HP	350 HP
Frame	8	8	8	8	8
Cooling	Air Cooled	Air Cooled	Air Cooled	Air Cooled	Air Cooled
EtherNet/IP	Yes	Yes	Yes	Yes	Yes
HIM	None	Enhanced LCD	Door Mounted	Enhanced LCD	None
Enclosure	IP20 / Type 1	IP20 / Type 1	IP20 / Type 1	IP20 / Type 1	IP20 / Type 1
Approx. Dimensions	Large Frame	Large Frame	Large Frame	Large Frame	Large Frame
Approx. Weight kg	~620–635	~620–635	~620–635	~600–623	Configuration dependent
Main Advantage	Centralized operation	Local maintenance	Door-mounted access	Higher current + HIM	Higher current

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28. Five Popular Models from the Same Brand

For broader applications, the following models provide useful references across different drive sizes and product families.

Model	Product Family	Voltage Class	Current / Power Class	Typical Application	Approx. Dimensions	Approx. Weight kg
25B-D030N114	PowerFlex 525	480 V class	~30 A class	General Machinery	Compact	Configuration dependent
25C-D030N114	PowerFlex 527	480 V class	~30 A class	Automated Machinery	Compact	Configuration dependent
20G1ABD430AN0NNNNN	PowerFlex 755	480 VAC	430 A	Large Pumps / Fans	Large Frame	~620–635
20G1ABD485AN0NNNNN	PowerFlex 755	480 VAC	485 A	Large Industrial Motors	Large Frame	~600–623
20G1ABD545AN0NNNNN	PowerFlex 755	480 VAC	545 A	Heavy Industrial Motors	Large Frame	Configuration dependent

The PowerFlex 525 and PowerFlex 527 models are intended for considerably smaller applications.

The PowerFlex 755 models are the more appropriate choices when the motor power moves into the several-hundred-horsepower range.

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29. Same-Brand Model Comparison

Parameter	25B-D030N114	25C-D030N114	20G1ABD430AN0NNNNN	20G1ABD485AN0NNNNN	20G1ABD545AN0NNNNN
Product Family	PowerFlex 525	PowerFlex 527	PowerFlex 755	PowerFlex 755	PowerFlex 755
Voltage Class	480 V	480 V	480 V	480 V	480 V
Phase	3 Phase	3 Phase	3 Phase	3 Phase	3 Phase
Current Class	~30 A	~30 A	430 A	485 A	545 A
Application Scale	Small / Medium	Small / Medium	Large	Large	Very Large
Frame	Compact	Compact	Frame 8	Frame 8	Frame 8
Cooling	Air Cooled	Air Cooled	Air Cooled	Air Cooled	Air Cooled
Network	Ethernet / EtherNet/IP class	EtherNet/IP	Embedded EtherNet/IP	Embedded EtherNet/IP	Embedded EtherNet/IP
Typical Use	Machine Control	Automated Machinery	Large Pumps / Fans	Large Industrial Motors	Heavy Industrial Motors
Approx. Dimensions	Compact	Compact	Large Frame	Large Frame	Large Frame
Approx. Weight kg	Configuration dependent	Configuration dependent	~620–635	~600–623	Configuration dependent

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30. 430 A vs. 485 A Comparison

The 430 A and 485 A configurations are closely related but should not be treated as interchangeable without checking the motor requirements.

Parameter	20G1ABD430AN0NNNNN	20G1ABD485AN0NNNNN
Input Voltage	480 VAC	480 VAC
Phase	3 Phase	3 Phase
Output Current	430 A	485 A
Light Duty	400 HP	450 HP
Normal Duty	350 HP	400 HP
Heavy Duty	300 HP	350 HP
Frame	Frame 8	Frame 8
Cooling	Air Cooled	Air Cooled
EtherNet/IP	Yes	Yes
HIM	None	None
Enclosure	IP20 / Type 1	IP20 / Type 1
Cabinet Style	600 mm MCC Style	600 mm MCC Style
Approx. Weight	~620–635 kg	~600–623 kg
Main Difference	Lower current capacity	Higher current capacity

The 485 A version provides additional motor capacity and is therefore suitable when the 430 A version is too close to the motor’s operating-current requirement.

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31. Local HIM vs. No-HIM Configuration

Feature	20G1ABD485AN0NNNNN	20G1ABD485AN2NNNNN
Current	485 A	485 A
Voltage	480 VAC	480 VAC
Series	PowerFlex 755	PowerFlex 755
Local HIM	No	Enhanced LCD
Local Parameter Access	External / network-based	Direct local access
Commissioning	Centralized	Local + centralized
Maintenance	Requires external access method	Easier local access
Network Control	Yes	Yes
Typical Installation	Automated cabinet	Automated cabinet with local service access

The AN0 configuration is attractive when the drive is normally controlled from a central system.

The AN2 configuration is more convenient when maintenance technicians need regular direct access.

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32. Installation Environment

The standard enclosure is IP20 / NEMA Type 1, which means the drive is intended for installation in a suitable protected industrial environment.

It should not be treated as a weatherproof outdoor drive.

The installation should protect the equipment from:

• Excessive moisture
• Condensation
• Conductive dust
• Corrosive contaminants
• Excessive vibration
• Excessive ambient heat
• Foreign material

For harsh industrial environments, the overall cabinet and room design becomes especially important.

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33. Maintenance and Troubleshooting Advantages

The networked architecture provides several useful diagnostic possibilities.

The control system can monitor:

• Drive status
• Output current
• Speed
• Frequency
• Fault status
• Alarm conditions
• Operating state
• Process variables

This makes it possible to diagnose many drive conditions from a central control station.

However, the no-HIM configuration means that direct local operation is more limited than with a drive equipped with a local interface.

For installations where frequent local maintenance is expected, an AN2 or AN4 configuration may therefore be preferable.

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34. Engineering Selection Checklist

Before selecting the 20G1ABD485AN0NNNNN for a new application, the following points should be checked.

Selection Item	Required Check
Motor Voltage	480 VAC class
Motor Current	Within 485 A drive capability
Motor HP	Within selected duty rating
Load Type	Variable torque / constant torque
Duty Cycle	Normal or Heavy Duty
Starting Torque	Evaluate
Acceleration Time	Evaluate
Deceleration Time	Evaluate
Braking Energy	Determine whether external braking is required
Network	EtherNet/IP compatibility
Local HIM	Determine whether required
Cooling	Verify ventilation
Cabinet Space	Verify dimensions
Floor Loading	Verify approximately 600+ kg equipment
Cable Size	Engineer according to current and installation
Grounding	Verify system configuration
Ambient Temperature	Verify operating range
Maintenance	Provide adequate access

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35. Lifecycle and Replacement

The original 20G1ABD485AN0NNNNN is a discontinued catalog configuration.

The direct replacement reference is 20G1ABD485JN0NNNNN.

This is particularly important when the catalog number is being used for spare-parts identification or replacement planning.

For existing machinery, the original model remains an important reference because the installed system may have been designed around its original electrical and mechanical characteristics.

For a new installation, the replacement configuration should be evaluated against the original specifications.

Important comparison points include:

• Input voltage
• Output current
• Duty rating
• Frame
• Enclosure
• Filtering
• Grounding configuration
• HIM
• Communication
• Braking
• Physical dimensions
• Weight
• Motor-control requirements

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36. Recommended Application Categories

Industry	Typical Equipment	Suitability
Water Treatment	Pumps / Blowers	Excellent
Wastewater	Pumps / Aeration Blowers	Excellent
Mining	Conveyors / Pumps	Excellent
Cement	Fans / Conveyors	Excellent
Steel	Fans / Pumps / Process Machinery	Excellent
Manufacturing	Large Production Machines	Excellent
HVAC	Large Fans / Pumps	Excellent
Material Handling	Conveyors	Excellent
Chemical Processing	Pumps / Mixers	Excellent
General Process Industry	Large Motors	Excellent
Small Machinery	Small Motors	Not Recommended
Residential Equipment	Small Motors	Not Suitable

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37. Overall Product Advantages

Advantage	Practical Result
485 A Output	Large motor compatibility
450 HP Light Duty	High-capacity variable-torque applications
400 HP Normal Duty	Large continuous industrial loads
350 HP Heavy Duty	Demanding mechanical loads
480 VAC	Suitable for industrial 480 V systems
Frame 8	High-power construction
Air Cooling	Practical high-power thermal management
EtherNet/IP	Automation-system integration
No HIM	Good for centralized control
AC Precharge	Suitable high-power input arrangement
EMC Filtering	Improved electrical-system compatibility
IP20 / Type 1	Protected industrial installation
MCC Style	Suitable for large electrical rooms
Flexible Motor Control	Adaptable to different motor applications

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38. Final Technical Summary

Item	20G1ABD485AN0NNNNN
Brand	Allen-Bradley
Product Family	PowerFlex 750-Series
Product Series	PowerFlex 755
Product Type	Air-Cooled AC Packaged Drive
Input Voltage	480 VAC
Input Phase	3 Phase
DC Voltage Class	650 VDC
Output Current	485 A
Light Duty	450 HP
Normal Duty	400 HP
Heavy Duty	350 HP
Approx. Light Duty Power	336 kW
Approx. Normal Duty Power	298 kW
Approx. Heavy Duty Power	261 kW
Frame	Frame 8
Cooling	Forced Air
Input	AC Input with Precharge
DC Input Terminals	None
Dynamic Braking	None
Filtering	EMC Filter
CM Jumper	Removed
Communication	Embedded EtherNet/IP
HIM	None
Enclosure	IP20 / NEMA Type 1
Cabinet Style	600 mm Deep MCC Style
Approx. Height	~2100 mm class
Approx. Width	~610 mm class
Approx. Depth	~465 mm drive-envelope class
Approx. Dimensions	~2100 × 610 × 465 mm
Approx. Weight	~600–623 kg
Main Applications	Pumps, fans, blowers, conveyors, compressors, mixers, process machinery
Main Advantage	High-power centralized motor control
Lifecycle	Discontinued
Direct Replacement Reference	20G1ABD485JN0NNNNN

39. Overall Product Assessment

The 20G1ABD485AN0NNNNN is a high-power PowerFlex 755 AC drive designed for large industrial motor applications.

Its 480 VAC three-phase input, 485 A output rating and Frame 8 construction make it appropriate for motors in the several-hundred-horsepower range.

The drive provides approximately 450 HP Light Duty, 400 HP Normal Duty and 350 HP Heavy Duty ratings, giving it flexibility across different industrial load conditions.

The embedded EtherNet/IP interface is particularly valuable in modern automation systems.

It allows the drive to operate as part of a centralized architecture in which a PLC, HMI or SCADA system controls and monitors the motor.

The AN0 no-HIM configuration is well suited to automated installations where local operator access is not necessary.

For applications such as large pumps, fans, blowers and conveyors, this configuration provides a practical combination of high current capacity and centralized network control.

The physical size should be considered carefully.

The drive belongs to the large Frame 8 category, with an approximate 2100 × 610 × 465 mm drive-envelope class and approximately 600–623 kg equipment weight.

Proper floor loading, transportation, lifting, ventilation, cable routing and service access are therefore essential parts of the installation design.

For applications requiring local maintenance access, a related configuration with an Enhanced LCD HIM may be more convenient.

For motors requiring more current than 485 A, a higher-current PowerFlex 755 configuration should be considered.

Overall, the 20G1ABD485AN0NNNNN is best characterized as a large-frame, air-cooled, 480 VAC PowerFlex 755 AC drive rated at 485 A, with embedded EtherNet/IP, 600 mm MCC-style construction, AC input with precharge and no local HIM.

It is particularly appropriate for large industrial motor systems where centralized automation, high power, variable-speed operation and reliable network communication are more important than local front-panel operation.