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20G1F4C585LNANNNNN – PowerFlex 755 585A AC Drive

1. Product Overview

The 20G1F4C585LNANNNNN is a high-power AC variable frequency drive from the PowerFlex 755 series. It is designed for large three-phase industrial motors where precise speed control, stable torque production, dependable operation, and integration with an industrial automation system are required.

This model belongs to the high-capacity section of the PowerFlex 755 family and is intended for demanding applications such as large pumps, fans, blowers, conveyors, compressors, process machinery, material-handling systems, and other heavy industrial equipment.

The 585-class configuration is particularly suitable for installations where a standard medium-power drive is not sufficient and a larger frame and higher current capacity are required.

The model uses a three-phase 400 VAC class power system and is associated with a 585 A-class normal-duty rating. The 585 A rating corresponds to approximately 315 kW in the 400 V configuration, making this drive suitable for large industrial motor applications.

The enclosure and floor-mounted construction make the product appropriate for industrial electrical rooms, motor control areas, process plants, utility facilities, and centralized drive cabinets.

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2. Basic Product Information

Parameter	Specification
Brand	Allen-Bradley
Product Series	PowerFlex 755
Product Type	AC Variable Frequency Drive
Model	20G1F4C585LNANNNNN
Drive Family	PowerFlex 750-Series
Application Type	Industrial AC motor control
Input System	Three-phase AC
Nominal Voltage Class	400 VAC
Normal-Duty Current Class	585 A
Approximate Normal-Duty Power	315 kW class
Enclosure Configuration	IP54 / UL Type 12 class
Mounting	Floor mount
Cooling	Forced-air / cabinet cooling
Frame	Frame 8 class
Motor Type	Three-phase AC induction and compatible high-performance motor applications
Control Function	Variable-frequency motor control
Installation Environment	Industrial electrical room / control cabinet area
Typical Application Level	Medium- to high-power industrial machinery

The catalog number contains several configuration characters that define the drive’s voltage class, enclosure arrangement, current rating, mounting configuration, and other factory-selected options. Because the complete suffix is important when replacing or matching a drive, the entire catalog number should be retained when specifying this product.

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3. Main Technical Parameters

Parameter	Specification
Model	20G1F4C585LNANNNNN
Series	PowerFlex 755
Rated Voltage	400 VAC class
Input Phase	3 Phase
Normal-Duty Output Current	585 A class
Normal-Duty Motor Power	Approximately 315 kW class
Frequency	Variable output frequency
Motor Control	High-performance AC motor control
Enclosure	IP54 / UL Type 12 class
Mounting Method	Floor mount
Frame Size	Frame 8
Cooling Method	Forced-air cooled
Installation	Indoor industrial installation
Control Platform	PowerFlex 755 control architecture
Communication	Network and optional industrial communication interfaces depending on configuration
Feedback	Compatible with drive feedback options
Dynamic Control	Speed and torque control functions
Protection	Drive and motor protection functions
Application Range	Pumps, fans, conveyors, compressors, process machinery, material handling
Approximate Cabinet Height	2453 mm class*
Approximate Cabinet Width	600–1200 mm class*
Approximate Cabinet Depth	600–800 mm class*
Approximate Weight	623 kg class for a basic Frame 8 cabinet configuration*

*Frame 8 dimensions and weight can vary according to cabinet arrangement, drive/option cabinet configuration, disconnect equipment, incoming-line equipment, and other selected options. The values above are intended for equipment planning rather than final mechanical installation drawings.

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4. Electrical Characteristics

The 20G1F4C585LNANNNNN is designed around a 400 VAC three-phase industrial power system.

Its 585 A-class normal-duty rating places it in the high-power range of the PowerFlex 755 family. At this current level, the drive is intended for substantial motor loads rather than compact machinery.

The approximately 315 kW normal-duty power class makes it suitable for large rotating equipment. The actual usable motor power depends on motor efficiency, operating duty, ambient temperature, overload requirements, switching frequency, installation conditions, and the specific drive rating table being applied.

For applications with frequent overloads, high starting torque, high inertia, or repeated acceleration and deceleration, the drive should be selected according to the applicable duty rating rather than simply matching the motor nameplate power.

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5. Voltage and Power Class

Item	Specification
Input Voltage Class	400 VAC
Input Configuration	Three-phase
Current Class	585 A
Approximate Motor Power	315 kW
Industrial Frequency	Typically 50/60 Hz supply environment
Output	Variable voltage / variable frequency
Motor Speed Control	Adjustable
Motor Acceleration	Programmable
Motor Deceleration	Programmable
Overload Handling	Application and duty dependent
Suitable Motor Size	Large industrial motor class

The 400 V configuration is particularly relevant to industrial installations using 380–415 V class distribution systems.

For engineering projects, the actual incoming voltage range, short-circuit current, transformer capacity, cable size, protective device rating, and motor operating current should be checked before final installation.

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6. Product Introduction

The PowerFlex 755 platform is intended for applications where conventional basic variable-frequency control is not enough.

The 20G1F4C585LNANNNNN provides a combination of high current capacity, advanced motor control, industrial networking capability, diagnostic functions, and configurable control architecture.

At 585 A, the drive is physically much larger than the small-frame PowerFlex products. The cabinet arrangement is designed for large industrial installations where the drive is normally integrated into a dedicated electrical room or motor-control area.

The floor-mounted construction is especially useful for large drive systems because the equipment can be installed as part of a larger lineup containing disconnects, input equipment, control equipment, communication equipment, bypass arrangements, and other electrical components.

The drive can be applied to both constant-torque and variable-torque machinery, provided that the motor and application duty are correctly matched to the drive rating.

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7. Construction and Installation

The 20G1F4C585LNANNNNN uses a large-frame industrial construction rather than a compact wall-mounted drive.

This is important when planning an installation because the equipment requires substantially more floor space, ventilation, cable access, and service clearance than smaller variable-frequency drives.

The IP54 / UL Type 12 class enclosure arrangement provides a substantially higher level of environmental protection than an open-frame drive. This makes the configuration appropriate for controlled industrial environments where protection from dust and incidental moisture is required.

The actual installation location should still be selected carefully. A protected electrical room with controlled temperature, adequate ventilation, low humidity, and limited airborne contamination is preferable for long-term operation.

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8. Dimensions and Weight

The physical size of this model is strongly influenced by its Frame 8 cabinet configuration.

Mechanical Parameter	Approximate Value
Height	2453 mm
Width	600 mm class
Depth	600–800 mm class
Weight	Approximately 623 kg
Mounting	Floor mounted
Cabinet Type	Industrial MCC-style cabinet
Service Access	Front service access required
Ventilation	Required
Cable Entry	Configuration dependent

For a cabinet incorporating both the drive and additional option equipment, the width and overall weight can increase significantly. Some configurations use a wider cabinet arrangement, particularly when input equipment, option sections, or additional control sections are included.

For this reason, the dimensions shown above should be treated as planning values. Final mechanical drawings should always be checked against the exact supplied configuration before preparing the foundation, cable trench, lifting arrangement, or enclosure lineup.

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9. Cooling System

At this power level, heat management is an important part of the installation.

The drive uses forced-air cooling to remove heat generated by the power semiconductors and other internal components.

Proper airflow is essential. The cabinet should not be installed in a location where hot exhaust air can circulate directly back into the drive intake.

A large drive installation should normally consider:

• Room temperature
• Airflow direction
• Cabinet ventilation
• Exhaust heat
• Filter condition
• Fan operation
• Ambient dust
• Clearance around ventilation openings
• Electrical-room HVAC capacity

Regular inspection of cooling fans and ventilation paths is particularly important in dusty manufacturing environments.

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10. Main Product Features

Feature	Description
High Current Capacity	585 A-class output for large industrial motors
400 V Class	Suitable for 400 VAC three-phase industrial power systems
Large Frame	Frame 8 construction for high-power applications
Floor Mounting	Suitable for large electrical rooms and MCC installations
IP54 / Type 12 Class	Enhanced enclosure protection for industrial environments
Advanced Motor Control	Suitable for applications requiring controlled acceleration, speed, and torque
Industrial Communication	Supports integration with automation systems through compatible communication options
Diagnostic Functions	Provides drive and motor operating information for maintenance and troubleshooting
Configurable Architecture	Allows the drive to be adapted to different machine requirements
High-Power Applications	Suitable for pumps, fans, conveyors, compressors, and process machinery
Feedback Capability	Can support feedback-based control where required
Large Motor Compatibility	Designed for large industrial AC motor systems

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11. Product Applications

The 20G1F4C585LNANNNNN is best suited to applications where the motor load is large enough to require a high-power drive and where controlled motor operation provides a practical operating advantage.

11.1 Pumps

Large water pumps, process pumps, cooling-water pumps, wastewater pumps, and industrial circulation systems can benefit from variable-speed operation.

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

This can help reduce unnecessary mechanical stress and improve process control.

Typical applications include:

Pump Application	Typical Requirement
Water Supply Pump	Variable flow
Wastewater Pump	Variable process demand
Cooling Water Pump	Flow control
Process Pump	Pressure / flow regulation
Industrial Circulation Pump	Continuous speed adjustment
Large Centrifugal Pump	Energy-oriented speed control

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11.2 Fans and Blowers

Large fans and blowers are another important application.

Ventilation systems, industrial exhaust systems, combustion-air systems, cooling towers, process-air systems, and mine ventilation equipment often require variable airflow.

The drive allows motor speed to be adjusted rather than relying entirely on mechanical throttling.

Typical applications include:

• Industrial ventilation
• Large exhaust fans
• Cooling fans
• Process blowers
• Combustion-air fans
• Mine ventilation
• Dust collection systems
• HVAC air-handling equipment

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11.3 Conveyors

Large conveyors often have significant starting inertia and require controlled acceleration.

The drive can provide a gradual speed ramp, reducing sudden mechanical loading on gearboxes, couplings, belts, chains, and other transmission components.

Applications include:

• Mining conveyors
• Aggregate conveyors
• Cement conveyors
• Bulk-material handling
• Warehouse material systems
• Process conveyors
• Long-distance belt conveyors

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11.4 Compressors

Large industrial compressors can require precise speed control and substantial starting torque.

A properly sized high-power drive can provide controlled acceleration and allow the compressor operating point to be adjusted to the process requirement.

Potential applications include:

• Process compressors
• Industrial air systems
• Gas-related machinery
• Cooling and refrigeration machinery
• Plant utility compressors

The exact suitability depends on compressor type, load profile, starting requirements, and the manufacturer’s motor-control recommendations.

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11.5 Process Machinery

The drive can also be used on large process machines where motor speed needs to follow a production recipe or process condition.

Examples include:

• Mixers
• Agitators
• Extrusion equipment
• Large processing machines
• Material-handling equipment
• Industrial production lines
• Large machine tools
• Continuous-process machinery

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12. Application Advantages

Application	Main Benefit
Large Pumps	Adjustable flow and pressure control
Large Fans	Adjustable airflow
Blowers	Controlled process airflow
Conveyors	Smooth acceleration and deceleration
Compressors	Adjustable operating speed
Mixers	Controlled process speed
Material Handling	Improved starting and stopping control
Process Machinery	Flexible speed regulation
Water Treatment	Variable pumping control
Manufacturing	Centralized motor control and diagnostics

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13. Main Advantages

13.1 High-Power Motor Control

The biggest advantage of this model is its ability to control large industrial motors.

A 585 A-class drive provides considerably more capacity than the smaller models in the same family, making it suitable for large rotating machinery and high-throughput industrial processes.

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13.2 Smooth Motor Starting

Large motors can create substantial mechanical and electrical stress when started directly across the line.

Variable-frequency starting allows the motor to accelerate progressively.

This can reduce mechanical shock to:

• Shafts
• Couplings
• Gearboxes
• Belts
• Chains
• Pumps
• Fans
• Conveyors

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13.3 Adjustable Operating Speed

The drive allows motor speed to be changed according to process requirements.

This is especially useful for pumps and fans, where the required operating point can vary significantly during normal plant operation.

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13.4 Better Process Control

Speed can be integrated with pressure, flow, temperature, level, or production requirements.

This makes the drive useful not only as a motor starter but also as part of a larger process-control system.

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13.5 Industrial Automation Integration

The PowerFlex 755 platform is designed for integration into industrial control systems.

Depending on the installed communication options, the drive can exchange commands, operating status, speed references, faults, and diagnostic information with higher-level automation equipment.

This is valuable in large plants where many drives are monitored from a central control system.

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13.6 Diagnostic Capability

Drive diagnostics can help maintenance personnel identify operating conditions and potential problems.

Typical information available from an advanced drive system can include:

• Output current
• Motor speed
• Frequency
• Drive status
• Fault conditions
• Warning conditions
• Temperature information
• Operating hours
• Communication status

These functions can reduce troubleshooting time and make preventive maintenance more practical.

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14. Benefits for Large Industrial Plants

Large industrial facilities often operate continuously, which means motor reliability and predictable operation are important.

The 20G1F4C585LNANNNNN is suited to centralized drive installations where several high-power motor systems operate as part of one production process.

Its large-frame construction also allows the drive to be incorporated into a larger electrical lineup.

This can simplify the organization of:

• Main incoming power
• Drive equipment
• Motor feeders
• Control circuits
• Communication networks
• Maintenance access
• Protection equipment

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15. Recommended Motor Applications

Motor Application	Suitability
Large Centrifugal Pump	High
Large Water Pump	High
Wastewater Pump	High
Large Cooling Fan	High
Industrial Blower	High
Large Conveyor	High
Mining Conveyor	High
Material Handling	High
Process Machinery	High
Large Compressor	Application dependent
Mixer / Agitator	Application dependent
High-Inertia Machinery	Requires detailed application review
Crusher	Requires detailed application review

High-inertia loads deserve particular attention because acceleration time, motor thermal capacity, braking requirements, and drive duty can become more demanding than the motor’s basic horsepower rating suggests.

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16. Recommended Same-Series or Closely Related Models

The following models are useful comparison choices within the PowerFlex 755 family.

Model	Series	Voltage Class	Current Class	Approx. Power Class	Frame / Construction	Dimensions	Weight
20G1F4C540LNANNNNN	PowerFlex 755	400 VAC	540 A	315 kW class	Frame 8	Large floor-mounted cabinet	Configuration dependent
20G1F4C585LNANNNNN	PowerFlex 755	400 VAC	585 A	315 kW class	Frame 8	2453 × 600–1200 × 600–800 mm class	Approx. 623 kg class
20G1F4C650LNANNNNN	PowerFlex 755	400 VAC	650 A	355 kW class	Frame 8	Large floor-mounted cabinet	Configuration dependent
20G1F4C750LNANNNNN	PowerFlex 755	400 VAC	750 A	400 kW class	Frame 8	Large floor-mounted cabinet	Configuration dependent
20G1F4C770LNANNNNN	PowerFlex 755	400 VAC	770 A	400 kW class	Frame 8	Large floor-mounted cabinet	Configuration dependent

The models above are close enough in the product family to be useful when comparing current capacity and motor power requirements.

The 540 A model represents a lower-current option, while the 650 A, 750 A, and 770 A models provide progressively greater current capacity.

The complete catalog number should always be compared when selecting a replacement because enclosure, filtering, control, braking, communication, and other configuration details can differ even when two models have similar current ratings.

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17. Five Popular Models Under the Same Brand

Model	Product Series	Voltage / Application Class	Current / Power Class	Typical Application	Dimensions	Weight
20G1F4C540LNANNNNN	PowerFlex 755	400 VAC	540 A / 315 kW class	Large pumps, fans, conveyors	Large Frame 8 cabinet	Configuration dependent
20G1F4C650LNANNNNN	PowerFlex 755	400 VAC	650 A / 355 kW class	Large industrial machinery	Large Frame 8 cabinet	Configuration dependent
20G1F4C750LNANNNNN	PowerFlex 755	400 VAC	750 A / 400 kW class	Large pumps and process equipment	Large Frame 8 cabinet	Configuration dependent
20G1F4C920LNANNNNN	PowerFlex 755	400 VAC	920 A / 500 kW class	Very large industrial motors	Large-frame cabinet	Configuration dependent
20G11TC750JN0NNNNN	PowerFlex 755	480 VAC class	750 A class	Large industrial automation systems	Large cabinet	Configuration dependent

These models cover a broad section of the high-power PowerFlex product range.

The 540 A and 650 A models are useful where the motor load is somewhat lower than the 585 A configuration, while the 750 A and 920 A versions provide additional capacity for larger motors.

The 480 V-class 750 A configuration is useful as a comparison when an installation operates from a different industrial voltage system.

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18. Comparison With the 540 A Model

The 20G1F4C540LNANNNNN is one of the closest models to the 585 A configuration.

Parameter	20G1F4C540LNANNNNN	20G1F4C585LNANNNNN
Series	PowerFlex 755	PowerFlex 755
Voltage	400 VAC class	400 VAC class
Current Class	540 A	585 A
Power Class	315 kW class	315 kW class
Frame	Large Frame 8 class	Large Frame 8 class
Mounting	Floor mount	Floor mount
Enclosure	IP54 / Type 12 class	IP54 / Type 12 class
Main Difference	Lower current configuration	Higher current configuration

Although the nominal motor power class can overlap, current rating remains an important selection parameter.

The actual selection should therefore be based on motor full-load current, overload requirement, duty cycle, ambient conditions, switching frequency, and the expected operating profile.

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19. Comparison With the 650 A Model

The 20G1F4C650LNANNNNN provides additional current capacity compared with the 585 A model.

This can be useful when the motor has a higher rated current, when operating conditions create additional thermal requirements, or when the application has a demanding duty cycle.

However, selecting a larger drive solely because it has a higher current rating is not always necessary. The drive should be matched to the actual motor and load requirements.

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20. Maintenance Advantages

Large industrial drives require planned maintenance because the equipment normally operates for long periods under substantial electrical and thermal loads.

Important maintenance areas include:

Maintenance Item	Recommended Attention
Cooling Fans	Check noise, airflow, and operation
Air Filters	Clean or replace when contaminated
Cabinet Ventilation	Keep air paths unobstructed
Power Connections	Inspect for overheating or looseness
DC Bus	Monitor abnormal operating conditions
Motor Cable	Inspect insulation and termination
Grounding	Check grounding connections
Control Wiring	Inspect terminals and connectors
Communication	Check network status and diagnostics
Fault History	Review recurring alarms and trips
Cabinet Interior	Keep free from excessive dust
Temperature	Check for abnormal thermal conditions

Maintenance intervals should be adjusted to the actual plant environment.

A clean electrical room generally requires less frequent cleaning than a cement plant, mining facility, aggregate plant, or other environment with heavy airborne dust.

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21. Installation Considerations

Before installing the 20G1F4C585LNANNNNN, the following points should be considered.

Electrical Capacity

The incoming electrical system must be capable of supplying the required current without unacceptable voltage drop.

Transformer capacity, upstream protection, cable sizing, and short-circuit conditions should be reviewed during engineering.

Motor Compatibility

The motor’s rated voltage, current, frequency, power, insulation system, and operating speed must be compatible with the drive application.

Mechanical Space

The Frame 8 cabinet requires considerably more floor space than compact drive models.

Adequate front access and ventilation space should be included in the electrical-room layout.

Heat Dissipation

The drive produces heat during operation, and the electrical room must be able to remove that heat.

Cable Routing

Motor cables should be routed in accordance with the installation requirements of the drive and plant electrical standards.

Grounding

A properly designed grounding system is important for both safety and reliable drive operation.

Communication

If the drive is connected to a PLC, DCS, SCADA system, or plant network, the communication architecture should be planned before installation.

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22. Motor Selection Guidance

For a large drive such as the 20G1F4C585LNANNNNN, motor selection should not be based only on horsepower.

The following motor data should be checked:

1. Motor rated voltage
2. Motor full-load current
3. Motor rated frequency
4. Motor rated speed
5. Motor power
6. Starting torque requirement
7. Maximum operating speed
8. Minimum operating speed
9. Cooling method
10. Load inertia
11. Acceleration time
12. Deceleration time
13. Duty cycle
14. Overload requirement
15. Motor cable length

The motor full-load current is particularly important because two motors with identical horsepower ratings can have different current requirements.

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23. Typical Industrial Applications

Industry	Example Equipment
Water Treatment	Large pumps and blowers
Wastewater	Lift pumps and process pumps
Mining	Conveyors and ventilation systems
Cement	Fans, conveyors, process machinery
Steel	Large process motors
Chemical Processing	Pumps, mixers, compressors
Manufacturing	Production-line machinery
Power Utilities	Pumps and auxiliary equipment
HVAC	Large fans and pumps
Material Handling	Conveyors and lifting systems
Aggregate	Crushers, conveyors, feeders
General Industry	Large AC motor systems

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24. Why the 585 A Configuration Is Useful

The 585 A configuration occupies an important position in the high-power drive range.

It provides more current capability than the 540 A class while remaining below the larger 650 A, 750 A, and 920 A configurations.

For engineering teams, this makes it useful when the motor current falls close to the upper end of the 540 A configuration or when additional current capacity is required without moving immediately to a much larger drive class.

The correct choice should always be based on the complete application rather than current rating alone.

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25. Product Advantages Summary

Advantage	Description
High Power	Designed for large industrial motors
585 A Current Class	Suitable for substantial motor loads
400 V System	Appropriate for 400 VAC industrial installations
Advanced Control	Provides controlled motor speed and torque
Floor-Mounted Construction	Suitable for large electrical rooms
IP54 / Type 12 Class	Improved environmental protection
Frame 8	Supports high-power industrial applications
Industrial Networking	Suitable for automation integration
Diagnostic Functions	Helps with commissioning and maintenance
Flexible Application	Suitable for pumps, fans, conveyors, compressors and process machinery
Smooth Acceleration	Reduces mechanical shock
Variable Speed	Allows motor speed to follow process requirements
Large-Motor Support	Designed for high-current industrial equipment

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26. Final Technical Specification

Category	Specification
Model	20G1F4C585LNANNNNN
Brand	Allen-Bradley
Series	PowerFlex 755
Product Type	High-Power AC Drive
Voltage	400 VAC class
Phase	Three Phase
Current	585 A class
Power	Approximately 315 kW class
Frame	Frame 8
Enclosure	IP54 / UL Type 12 class
Mounting	Floor mount
Cooling	Forced-air
Application	Large industrial AC motors
Typical Motors	Pumps, fans, blowers, conveyors, compressors, process motors
Approx. Height	2453 mm class
Approx. Width	600–1200 mm class
Approx. Depth	600–800 mm class
Approx. Weight	623 kg class for basic Frame 8 cabinet configuration
Installation	Industrial electrical room / MCC area
Control	Variable-frequency AC motor control
Communication	Configuration dependent
Feedback	Configuration dependent
Environmental Protection	IP54 / Type 12 class
Recommended Use	High-power industrial motor applications

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27. Overall Product Description

The 20G1F4C585LNANNNNN is a large-frame PowerFlex 755 AC drive intended for demanding industrial motor-control applications.

Its 400 VAC three-phase configuration and 585 A current class place it in the high-power range, with an approximately 315 kW motor power class.

The drive is particularly suitable for large pumps, fans, blowers, conveyors, compressors, material-handling equipment, and process machinery where controlled motor speed, controlled acceleration, and reliable automation integration are important.

Its floor-mounted Frame 8 construction makes it suitable for centralized industrial electrical installations rather than compact machine-mounted applications.

The IP54 / UL Type 12 class enclosure arrangement provides additional protection for industrial environments, while the forced-air cooling system supports operation at high power levels.

For engineering and replacement work, the complete catalog number 20G1F4C585LNANNNNN should be retained. The suffix contains configuration information that can affect enclosure construction, options, electrical characteristics, communication functions, and interchangeability.

From a system-design perspective, the most important selection factors are the motor full-load current, motor voltage, required power, duty cycle, overload requirements, acceleration and deceleration characteristics, environmental conditions, cooling requirements, and available electrical infrastructure.

When these parameters are correctly matched, the 20G1F4C585LNANNNNN provides a practical high-power variable-speed control solution for large industrial AC motors and centralized motor-control systems.