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Allen-Bradley 20G1ABF370AN2NNNNN PowerFlex 755 AC Drive

1. Product Introduction

The Allen-Bradley 20G1ABF370AN2NNNNN is a high-power PowerFlex 755 air-cooled AC drive designed for large industrial motor-control applications.

This catalog configuration belongs to the PowerFlex 755 series and is intended for large three-phase motors operating from a 690 VAC supply. It is rated at 370 A and uses a Frame 8 power structure. The drive uses forced-air cooling, AC input with precharge, and has no external DC terminals.

The model is particularly suitable for large pumps, fans, conveyors, blowers, process machinery, material-handling equipment, mining equipment, cement machinery, and other industrial systems where a conventional compact variable-frequency drive would not provide sufficient power capacity.

The principal drive ratings are approximately 400 kW light duty, 355 kW normal duty, and 300 kW heavy duty. These ratings are important because the correct selection depends on the actual motor current and load duty rather than simply matching the motor’s nominal kW value.

A major feature of the AN2 configuration is its operator-interface arrangement. The model is a no-door-HIM configuration with an enhanced LCD full-numeric HIM arrangement, making it different from the AN0 no-HIM version and from the AN4 door-mounted configuration.

The model also incorporates embedded EtherNet/IP, allowing it to be integrated into a larger PLC, HMI, SCADA, or process-control architecture.

One important procurement consideration is that 20G1ABF370AN2NNNNN has been discontinued. The listed direct replacement is 20G1ABF370JN2NNNNN. The discontinued date is June 30, 2024.

For an existing installation, the AN2 catalog number remains important for identification, maintenance, documentation, and replacement planning. For a new installation, the corresponding JN2 configuration should normally be evaluated first.

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2. Brand and Product Series

Item	Specification
Brand	Allen-Bradley
Product Series	PowerFlex 755
Product Family	PowerFlex 750-Series AC Drives
Product Type	Air-Cooled AC Drive
Catalog Number	20G1ABF370AN2NNNNN
Voltage Class	690 VAC
Phase	3 Phase
Rated Current	370 A
Frame	Frame 8
Cooling	Forced Air
Input Type	AC Input with Precharge
DC Terminals	None
Dynamic Braking	None
Communication	Embedded EtherNet/IP
Filtering	Filtered
CM Configuration	CM Jumper Removed
HIM Configuration	Enhanced LCD Full Numeric
Enclosure Style	Type 1 / IP20
MCC Style	600 mm Deep
Product Status	Discontinued
Direct Replacement	20G1ABF370JN2NNNNN

The PowerFlex 755 family is positioned as a high-capacity industrial AC-drive platform for applications where motor power, control flexibility, network integration, and application-specific configuration are important.

The family covers a wide range of industrial motor sizes and includes different voltage classes, current ratings, frame sizes, cooling arrangements, operator-interface configurations, feedback options, and braking arrangements.

The 20G1ABF370AN2NNNNN sits toward the high-power end of the conventional air-cooled PowerFlex 755 range.

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3. Detailed Technical Specifications

Parameter	Specification
Model / Catalog Number	20G1ABF370AN2NNNNN
Brand	Allen-Bradley
Series	PowerFlex 755
Drive Type	Air-Cooled AC Drive
Input Voltage	690 VAC
Input Phase	3 Phase
Rated Output Current	370 A
Light-Duty Power	400 kW
Normal-Duty Power	355 kW
Heavy-Duty Power	300 kW
Frame Size	Frame 8
Cooling Method	Forced Air
Input Configuration	AC Input with Precharge
DC Terminals	None
Dynamic Braking	None
Communication	Embedded EtherNet/IP
Filtering	Filtered
CM Jumper	Removed
HIM	Enhanced LCD Full Numeric
HIM Configuration	Local / Non-Door-Mounted
Enclosure	Type 1 / IP20
MCC Configuration	600 mm Deep MCC Style
Motor Control	Variable-Speed AC Motor Control
Approx. Planning Dimensions	Approx. 2100 × 800 × 600 mm*
Approx. Weight	Approx. 79.4 kg*
Product Status	Discontinued
Direct Replacement	20G1ABF370JN2NNNNN

*Dimensions and weight should be regarded as preliminary planning values. Frame 8 installations can vary according to mounting arrangement, option configuration, cabinet structure, and associated equipment. The actual dimensional drawing for the exact configuration should be used for final cabinet fabrication, transportation, lifting, and floor-loading calculations. The current related Frame 8 configuration is identified with a 600 mm size/depth designation in the product documentation.

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4. Electrical Characteristics

The most important electrical characteristic of the 20G1ABF370AN2NNNNN is its combination of 690 VAC, three-phase input and 370 A output capability.

A 690 VAC drive is intended for high-power industrial motor systems.

As motor power increases, the motor current also becomes substantial. Using a higher motor voltage can reduce the current required to transmit the same approximate power, which can have practical benefits for motor cables, switchgear, distribution equipment, and overall plant electrical design.

The 370 A rating places this drive substantially above the capacity of compact machine drives.

It is intended for large motors where high current capability and industrial drive functionality are required.

The actual motor should always be checked against the drive’s current rating under the selected duty classification.

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5. Power Ratings

The three primary duty ratings are:

Duty Classification	Rated Power
Light Duty	400 kW
Normal Duty	355 kW
Heavy Duty	300 kW

These ratings allow the drive to be applied to different types of industrial loads.

A centrifugal pump or large fan generally has a different torque characteristic from a conveyor, crusher, mixer, or other constant-torque machine.

For this reason, a 400 kW motor should not automatically be paired with the drive simply because the drive is listed as 400 kW light duty.

The actual motor current and application duty need to be evaluated.

For a demanding constant-torque machine, the 300 kW heavy-duty rating may be the more appropriate selection reference.

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6. Understanding the AN2 Configuration

The AN2 portion of the catalog number is important because it identifies the operator-interface arrangement.

Compared with a blank/no-HIM configuration, the AN2 configuration provides a local enhanced LCD full-numeric interface without the same door-mounted arrangement used by the JN4/AN4 type configurations.

This can be useful during:

• Commissioning.
• Parameter setup.
• Drive diagnostics.
• Fault investigation.
• Motor tuning.
• Maintenance.
• Local operating checks.

A local interface is especially useful when the drive is located in a motor-control room or electrical room and technicians need access to drive information without connecting a separate programming device.

At the same time, the embedded EtherNet/IP interface allows the drive to remain integrated with the plant’s central automation system.

This gives the drive two practical levels of interaction: local maintenance access and remote automation control.

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7. Embedded EtherNet/IP

The 20G1ABF370AN2NNNNN includes embedded EtherNet/IP.

For a large industrial drive, this is an important feature because the motor is normally part of a larger process rather than an isolated machine.

The drive can be integrated into an automation architecture containing:

• PLC systems.
• HMI systems.
• SCADA systems.
• Process-control systems.
• Remote I/O.
• Production-management systems.

Typical information exchanged through the network can include:

• Start command.
• Stop command.
• Speed reference.
• Output frequency.
• Motor current.
• Drive status.
• Fault status.
• Alarm status.
• Diagnostic information.
• Operating values.
• Reset commands.

Networked control can reduce the amount of hardwired signaling required between the drive and central control equipment.

For large plants with many drives, this can make the overall system architecture easier to standardize.

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8. Input Configuration

The drive uses AC input with precharge and no DC terminals.

The precharge arrangement is important because the drive’s DC bus contains significant stored electrical energy.

When the drive is energized, the DC bus must be charged in a controlled manner.

The absence of external DC terminals means this particular configuration is intended primarily as an AC-input drive rather than as a configuration selected specifically for external common-DC-bus operation.

For a conventional standalone motor application, this provides a straightforward drive architecture.

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9. Cooling System

The 20G1ABF370AN2NNNNN is a forced-air-cooled drive.

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

The drive produces heat during operation, and the electrical room or cabinet must be capable of removing that heat.

The installation should therefore consider:

• Ambient temperature.
• Airflow.
• Cabinet ventilation.
• Heat dissipation.
• Cooling-fan condition.
• Air passages.
• Cabinet arrangement.
• Service clearance.
• Temperature rise.

Large drives should not be treated like small wall-mounted drives.

The thermal load from the drive should be included in the overall electrical-room heat calculation.

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10. Filtering and CM Jumper Configuration

The AN2 configuration is identified as filtered with the CM jumper removed.

The CM-jumper arrangement is an important part of the drive’s electrical configuration.

It should be considered together with the plant’s grounding system and EMC design.

Relevant factors include:

• Facility grounding.
• Motor grounding.
• Motor-cable shielding.
• Motor-cable length.
• Cabinet bonding.
• Input transformer configuration.
• Common-mode behavior.
• EMC requirements.
• Installation environment.

The CM configuration should be selected according to the actual electrical system rather than changed simply to match another drive configuration.

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11. Dynamic Braking

The standard configuration does not include dynamic braking.

This matters particularly when the motor drives a high-inertia machine.

When a large rotating machine decelerates, mechanical energy can be returned to the drive’s DC bus.

Applications that require fast stopping or frequent deceleration should therefore be evaluated for regenerative energy.

Potentially demanding applications include:

• Large conveyors.
• High-inertia fans.
• Centrifuges.
• Hoisting equipment.
• Large rotating process machinery.
• Certain crushers.
• Machines with frequent stop/start cycles.

The absence of standard dynamic braking does not make the drive unsuitable for these applications, but it means the braking strategy should be considered during system engineering.

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12. Enclosure and Installation Style

The catalog configuration is a Type 1 / IP20, 600 mm deep MCC-style arrangement.

This is primarily intended for installation inside a suitable industrial electrical environment.

The drive itself should not be treated as an outdoor weatherproof enclosure.

If the installation environment contains:

• Water.
• Condensation.
• Oil mist.
• Conductive dust.
• Corrosive gases.
• Heavy contamination.

additional environmental protection may be necessary.

The electrical room or MCC enclosure should therefore provide a suitable environment for the drive.

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13. Dimensions and Weight

The physical size of the 20G1ABF370AN2NNNNN is substantial because it is a Frame 8 high-power drive.

For preliminary equipment-layout planning, an approximate overall envelope of:

Height: approximately 2100 mm

Width: approximately 800 mm

Depth: approximately 600 mm

can be used as a planning reference for a large Frame 8 arrangement.

The approximate drive-unit reference weight can be taken as around 79.4 kg, but the actual equipment weight may differ depending on configuration and installation assembly.

For final engineering, the exact mechanical drawing should be used.

The installation designer should also allow sufficient room for:

• Power cables.
• Control wiring.
• Network cables.
• Cable bending radius.
• Ventilation.
• Service work.
• Component replacement.
• Lifting equipment.
• Safe isolation.
• Removal of the drive if replacement is required.

For a high-power drive, service access should be considered during the original cabinet-layout design rather than added later.

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14. Product Applications

14.1 Large Water Pumps

Large water pumps are one of the strongest application areas for the 20G1ABF370AN2NNNNN.

Possible applications include:

• Water-transfer stations.
• Industrial water circulation.
• Cooling-water systems.
• Wastewater pumping.
• Process-water systems.
• Booster pumps.
• Irrigation systems.
• Large-scale fluid-transfer systems.

Variable-speed control can allow the pump to respond to actual system demand.

This can provide more flexible flow and pressure control than operating a motor continuously at a fixed speed.

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15. Large Cooling Pumps

Industrial facilities frequently use large cooling-water pumps.

The motor may run for long periods and may need to respond to changing process loads.

The 20G1ABF370AN2NNNNN provides the current capacity and voltage class required for many large pump systems, assuming the motor’s actual current and duty remain within the drive’s rating.

Applications may include:

• Industrial cooling loops.
• Steel-process cooling.
• Cement-plant cooling.
• Large machinery cooling.
• Central process-water systems.

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16. Large Fans and Blowers

Large fans are another strong application.

Typical examples include:

• Combustion-air fans.
• Exhaust fans.
• Process-air blowers.
• Cooling fans.
• Dust-collection fans.
• Tunnel ventilation.
• Industrial ventilation.
• Large air-handling systems.

Fan loads can benefit from variable-speed control because required airflow can change with production conditions.

The light-duty rating is particularly relevant to suitable variable-torque fan applications.

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17. Conveyor Systems

The drive is also well suited to large conveyor applications when the motor and mechanical load fall within the applicable rating.

Typical applications include:

• Mining conveyors.
• Cement conveyors.
• Aggregate conveyors.
• Bulk-material handling.
• Ore conveyors.
• Coal-handling systems.
• Port material handling.

A large conveyor can have significant inertia.

Controlled acceleration can reduce mechanical shock on belts, couplings, gearboxes, shafts, bearings, and drive pulleys.

For conveyors requiring rapid stopping, however, the braking requirements should be evaluated carefully.

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18. Mining Applications

The 690 VAC and 370 A characteristics make this drive relevant to large mining installations.

Potential applications include:

• Ore conveyors.
• Transfer conveyors.
• Large dewatering pumps.
• Ventilation fans.
• Processing equipment.
• Material-handling machinery.
• Auxiliary process systems.

Mining environments can also introduce additional considerations such as dust, ambient temperature, cable length, grounding, and maintenance access.

The drive’s environmental installation should therefore be designed around the actual mining facility.

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19. Cement and Aggregate Applications

Cement and aggregate plants commonly use high-power motors.

Potential applications include:

• Large conveyors.
• Crushers.
• Process fans.
• Dust collectors.
• Material feeders.
• Pumps.
• Screening equipment.
• Material-handling machinery.

The 300 kW heavy-duty rating is particularly relevant when evaluating machinery with higher torque demand.

For crushers and similar machines, the application should be checked carefully because actual torque requirements can vary considerably.

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20. Steel and Metals Processing

Large steel and metal-processing plants often require high-power motors for:

• Cooling pumps.
• Process fans.
• Conveyors.
• Material handling.
• Ventilation.
• Auxiliary process machinery.

The PowerFlex 755 platform can be useful where variable-speed control and automation integration are required.

The actual acceleration, deceleration, torque, and overload characteristics should be evaluated for each machine.

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21. Process Manufacturing

The 20G1ABF370AN2NNNNN can also be applied to large process-manufacturing systems.

Examples include:

• Large circulation pumps.
• Process fans.
• Blowers.
• Material conveyors.
• Large rotating equipment.
• Process auxiliaries.
• Utility systems.

The embedded EtherNet/IP interface makes the drive suitable for integration into centralized plant automation.

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22. Main Product Advantages

22.1 High 690 VAC Voltage Class

The 690 VAC configuration is a major advantage for high-power industrial motors.

It allows large motors to operate at a relatively high voltage, which can help manage current levels throughout the motor-power system.

This is particularly useful in plants with many high-power motors.

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22.2 370 A Current Capacity

The 370 A rating gives the drive substantial output capability.

It provides a practical solution for motors that exceed the current capacity of smaller PowerFlex configurations.

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22.3 400 kW Light-Duty Capability

The 400 kW light-duty rating is useful for suitable variable-torque applications.

Large fans and pumps are common examples where the load characteristic can allow the higher light-duty rating to be used.

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22.4 355 kW Normal-Duty Capability

The 355 kW normal-duty rating makes the drive appropriate for many large continuous industrial loads.

This is an important rating for initial motor matching.

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22.5 300 kW Heavy-Duty Capability

The 300 kW heavy-duty rating provides additional capability for more demanding constant-torque applications.

This can be relevant to conveyors, material handling, and certain process machines.

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22.6 Local LCD Interface

The AN2 configuration provides a local enhanced LCD full-numeric interface.

This is useful during commissioning and maintenance.

A technician can access drive information directly instead of relying entirely on a remote control system.

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22.7 Embedded EtherNet/IP

The drive can operate as part of a modern industrial network.

This is valuable for plants using centralized PLC and HMI architectures.

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22.8 Flexible Industrial Application

The PowerFlex 755 architecture is suitable for a broad range of industrial equipment.

This makes it useful for standardized plant-drive designs.

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23. Advantages for Maintenance

The local operator interface is particularly useful during maintenance.

A technician may need to determine:

• Whether the drive is running.
• What speed reference is active.
• Whether the motor is drawing abnormal current.
• Whether a fault has occurred.
• What operating condition preceded the fault.
• Whether a parameter requires adjustment.

With a local LCD interface, these tasks can be performed more conveniently at the drive.

This can reduce dependence on a remote engineering workstation during routine troubleshooting.

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24. Advantages for Centralized Automation

The drive can simultaneously support local maintenance interaction and centralized network control.

A typical architecture might use:

PLC → EtherNet/IP → PowerFlex 755 → Motor

while the local operator interface remains available for commissioning and maintenance.

This arrangement is useful in large factories because the central automation system remains responsible for process control while the drive retains local diagnostic capability.

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25. Installation Considerations

Before installing the drive, the following points should be reviewed.

Electrical Installation

Check:

• 690 VAC supply.
• Three-phase input.
• Short-circuit current.
• Input protection.
• Grounding.
• Transformer capacity.
• Motor-cable sizing.
• Motor insulation.
• Protective-device coordination.

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Mechanical Installation

Check:

• Cabinet dimensions.
• Floor loading.
• Lifting method.
• Cable entry.
• Cable bending radius.
• Service access.
• Ventilation.
• Heat dissipation.
• Maintenance clearance.

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Motor Compatibility

Check:

• Motor voltage.
• Full-load current.
• Motor kW.
• Rated frequency.
• Rated speed.
• Speed range.
• Insulation system.
• Motor cable length.
• Feedback requirements.
• Load torque.

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Application Duty

Determine whether the machine is:

• Variable torque.
• Constant torque.
• Heavy duty.
• High inertia.
• High starting torque.
• Frequently accelerating.
• Frequently decelerating.
• Regenerative.

These factors determine whether the 400 kW, 355 kW, or 300 kW rating should be used.

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26. Related PowerFlex 755 Models

The following models are useful comparisons within the same PowerFlex 755 family.

Model	Voltage	Current	LD / ND / HD Power	Frame	HIM Configuration	Application Position
20G1ABF330AN2NNNNN	690 VAC	330 A	355 / 315 / 250 kW	Frame 8	LCD HIM	Lower-capacity alternative
20G1ABF370JN2NNNNN	690 VAC	370 A	400 / 355 / 300 kW	Frame 8	LCD HIM	Direct replacement
20G1ABF370AN4NNNNN	690 VAC	370 A	400 / 355 / 300 kW	Frame 8	Door-mounted LCD HIM	Door-interface alternative
20G1ABF415AN2NNNNN	690 VAC	415 A	450 / 400 / 355 kW	Frame 8	LCD HIM	Higher-capacity alternative
20G1ABF460AN2NNNNN	690 VAC	460 A	500 / 450 / 375 kW	Frame 8	LCD HIM	Higher-power alternative

The most important alternative is 20G1ABF370JN2NNNNN, because it is the direct replacement for the discontinued AN2 model.

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27. Direct Replacement: 20G1ABF370JN2NNNNN

The 20G1ABF370JN2NNNNN is the direct replacement configuration identified for the 20G1ABF370AN2NNNNN.

The replacement remains within the PowerFlex 755 air-cooled platform and retains the important 690 VAC and 370 A characteristics.

The current configuration is identified as active, while the AN2 catalog number is discontinued.

This distinction is important for procurement.

For an existing machine, the old AN2 number should remain in the equipment records.

For new projects, the JN2 replacement should normally be considered instead.

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28. AN2 Versus JN2

Parameter	20G1ABF370AN2NNNNN	20G1ABF370JN2NNNNN
Product Series	PowerFlex 755	PowerFlex 755
Voltage	690 VAC	690 VAC
Current	370 A	370 A
Light Duty	400 kW	400 kW
Normal Duty	355 kW	355 kW
Heavy Duty	300 kW	300 kW
Frame	Frame 8	Frame 8
Cooling	Air Cooled	Air Cooled
Input	AC with Precharge	AC with Precharge
DC Terminals	None	None
Dynamic Braking	None	None
EtherNet/IP	Embedded	Embedded
Filtering	Filtered	Filtered
HIM	Enhanced LCD Full Numeric	Enhanced LCD Full Numeric
CM Jumper	Removed	Installed
Status	Discontinued	Active
Role	Existing/legacy equipment	Replacement configuration

The principal configuration difference to pay attention to is the CM jumper configuration.

The AN2 version uses the older configuration with the jumper removed, while the JN2 replacement uses the installed-jumper configuration.

For replacement work, the grounding and EMC design should therefore be reviewed rather than assuming that every installation detail is unchanged.

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29. Five Recommended Same-Series or Related Models

29.1 20G1ABF330AN2NNNNN

This is the lower-current 330 A version of the same general 690 VAC PowerFlex 755 configuration.

Its approximate ratings are:

• 355 kW light duty.
• 315 kW normal duty.
• 250 kW heavy duty.

It is appropriate when the motor current is lower than the 370 A requirement.

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29.2 20G1ABF370JN2NNNNN

This is the most important recommendation because it is the direct replacement for the original AN2 configuration.

It retains the 370 A, 690 VAC, Frame 8 PowerFlex 755 architecture and the corresponding LCD HIM configuration.

For new procurement, this should be the first alternative considered.

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29.3 20G1ABF370AN4NNNNN

This model is useful when the same 370 A electrical capacity is required but the installation benefits from a door-mounted operator interface.

The main difference is the physical/operator-interface configuration rather than the fundamental drive power class.

It is useful for applications where operators or maintenance technicians need front-door access to the drive interface.

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29.4 20G1ABF415AN2NNNNN

The 415 A version provides additional output capacity.

Its approximate duty ratings are:

• 450 kW light duty.
• 400 kW normal duty.
• 355 kW heavy duty.

It is a logical choice when the motor current is too high for the 370 A version.

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29.5 20G1ABF460AN2NNNNN

The 460 A version increases capacity further.

Its approximate duty ratings are:

• 500 kW light duty.
• 450 kW normal duty.
• 375 kW heavy duty.

This model is appropriate when the motor or machine requires a higher current class.

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30. Five Popular Allen-Bradley Models for Comparison

Model	Series	Voltage Class	Current Class	Typical Application	Interface
25B-D030N114	PowerFlex 525	480 VAC class	30 A class	General machinery	Integrated keypad
25C-D030N114	PowerFlex 523	480 VAC class	30 A class	Compact machine control	Integrated keypad
20G1ABC302JN4NNNNN	PowerFlex 755	480 VAC class	302 A class	Large industrial motors	Door-mounted LCD
20G1ABC460JN4NNNNN	PowerFlex 755	480 VAC class	460 A class	High-power machinery	Door-mounted LCD
20G1ABC650JN4NNNNN	PowerFlex 755	480 VAC class	650 A class	Very high-power motors	Door-mounted LCD

The first two models are considerably smaller drive classes and are more appropriate for compact industrial machinery.

The three PowerFlex 755 models provide more useful comparisons when the application involves large motors and higher power levels.

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31. Application Comparison

Application	Suitability	Main Reason
Large Water Pump	Excellent	High-power variable-speed control
Cooling-Water Pump	Excellent	Continuous high-power operation
Large Industrial Fan	Excellent	Variable-torque operation
Large Blower	Excellent	High-capacity motor control
Mining Conveyor	Very Good	High current and controlled acceleration
Cement Conveyor	Very Good	Large motor and industrial network integration
Aggregate Conveyor	Very Good	High-power variable-speed operation
Crusher	Good	Heavy-duty requirements must be checked
Dust Collection Fan	Excellent	Large variable-speed fan application
Process Pump	Excellent	High-power process control
Material Handling	Very Good	High-power motor control
Steel Process Equipment	Very Good	Large motor and network integration
General Process Machinery	Very Good	Flexible PowerFlex 755 platform

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32. Advantages in Pump Applications

For large pumping systems, the 20G1ABF370AN2NNNNN provides several useful characteristics.

The 690 VAC rating is suitable for large motors.

The 370 A output capacity allows the drive to control substantial motor loads.

The 400 kW light-duty rating is particularly relevant to suitable variable-torque applications.

EtherNet/IP allows the drive to communicate with a central control system.

The local LCD interface provides a practical way for maintenance personnel to inspect and configure the drive.

This combination is well suited to automated pump stations and large process-water systems.

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33. Advantages in Fan Applications

Large industrial fans often operate under variable process requirements.

The required airflow may change according to:

• Production rate.
• Temperature.
• Pressure.
• Ventilation demand.
• Combustion requirements.
• Dust loading.

Variable-speed control allows the motor speed to be adjusted rather than keeping the fan continuously at maximum speed.

The 400 kW light-duty rating can be especially useful for large variable-torque fan applications.

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34. Advantages in Conveyor Applications

Conveyors can require careful control of acceleration.

A sudden application of full torque can create mechanical stress.

Variable-speed operation allows acceleration to be managed more gradually.

This can help reduce stress on:

• Conveyor belts.
• Gearboxes.
• Couplings.
• Bearings.
• Drive pulleys.
• Shafts.
• Mechanical structures.

For large conveyor systems, the drive should also be evaluated for stopping behavior and regenerative energy.

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35. Advantages in Mining and Cement

Mining and cement equipment often operates continuously under demanding conditions.

The PowerFlex 755 platform provides a high-power drive architecture that can be integrated into centralized industrial automation.

The 690 VAC voltage class is suitable for large motors.

The 370 A output class is suitable for substantial motor loads.

The local LCD interface can simplify field maintenance.

EtherNet/IP can connect the drive to a larger process-control system.

These characteristics make the model particularly relevant to large fixed industrial installations.

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36. Maintenance and Service

For a high-power drive of this size, maintenance should include regular inspection of the cooling system and electrical connections.

Important maintenance areas include:

• Cooling fans.
• Airflow paths.
• Electrical terminals.
• Grounding connections.
• Motor cables.
• Cabinet ventilation.
• Network connections.
• Signs of overheating.
• Drive fault history.
• Environmental contamination.

The electrical room should also be kept clean and appropriately ventilated.

High-power electronic equipment is sensitive to excessive heat and contamination.

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37. Engineering Selection Checklist

Before selecting this drive for a new application, verify:

Selection Item	Required Check
Supply Voltage	690 VAC
Supply Phase	Three Phase
Motor Current	Within applicable 370 A duty rating
Motor Power	Check against LD/ND/HD rating
Motor Frequency	Verify motor nameplate
Motor Speed	Verify required speed range
Load Type	Variable torque / constant torque
Starting Torque	Confirm requirement
Acceleration	Confirm required acceleration time
Deceleration	Confirm braking requirement
Regeneration	Determine whether regenerative energy exists
Motor Cable	Check size and length
Grounding	Verify system grounding
EMC	Verify installation arrangement
Cooling	Confirm adequate airflow
Cabinet	Confirm physical fit
Weight	Verify lifting and mounting
Network	Confirm EtherNet/IP requirements
HIM	Confirm local interface requirement
Product Status	Use current replacement for new procurement

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38. Product Status and Replacement Consideration

The 20G1ABF370AN2NNNNN is discontinued, with the listed discontinuation date of June 30, 2024.

The direct replacement is 20G1ABF370JN2NNNNN.

This does not make the original catalog number irrelevant.

For equipment already installed in a plant, the original catalog number is still the correct reference for:

• Maintenance records.
• Existing-machine documentation.
• Spare-parts identification.
• Historical drawings.
• Equipment audits.
• Replacement planning.

For a new project, however, the active replacement configuration should be evaluated.

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39. Quick Reference Table

Parameter	20G1ABF370AN2NNNNN
Brand	Allen-Bradley
Series	PowerFlex 755
Drive Type	Air-Cooled AC Drive
Voltage	690 VAC
Phase	3 Phase
Output Current	370 A
Light-Duty Rating	400 kW
Normal-Duty Rating	355 kW
Heavy-Duty Rating	300 kW
Frame	Frame 8
Cooling	Forced Air
Input	AC Input with Precharge
DC Terminals	None
Dynamic Braking	None
EtherNet/IP	Embedded
Filtering	Filtered
CM Jumper	Removed
HIM	Enhanced LCD Full Numeric
Enclosure	Type 1 / IP20
MCC Style	600 mm Deep
Approx. Dimensions	2100 × 800 × 600 mm
Approx. Weight	79.4 kg*
Typical Applications	Pumps, Fans, Conveyors, Blowers, Mining, Cement, Process Machinery
Product Status	Discontinued
Direct Replacement	20G1ABF370JN2NNNNN

*Approximate engineering/reference value. Final mechanical design should use the exact dimensional drawing and actual equipment documentation.

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40. Final Product Assessment

The Allen-Bradley 20G1ABF370AN2NNNNN is a high-power PowerFlex 755 air-cooled AC drive designed for large industrial motor applications.

Its key characteristics are the 690 VAC three-phase rating, 370 A output capability, 400 kW light-duty rating, 355 kW normal-duty rating, 300 kW heavy-duty rating, Frame 8 construction, forced-air cooling, embedded EtherNet/IP, filtered configuration, and enhanced LCD full-numeric operator interface.

The model is particularly well suited to large pumps, fans, blowers, conveyors, mining machinery, cement equipment, material-handling systems, and other large industrial machines.

The local LCD interface is a useful advantage where technicians need access to the drive during commissioning and maintenance.

At the same time, the embedded EtherNet/IP interface allows the drive to participate in a centralized plant-control architecture.

The no-door-mounted-HIM configuration makes it different from configurations designed specifically for a door-mounted operator interface.

The CM jumper removed configuration is also an important electrical characteristic that should be considered during grounding and EMC design.

The absence of standard dynamic braking means applications with significant regenerative energy should be reviewed during the initial engineering stage.

From a procurement standpoint, the most important point is that 20G1ABF370AN2NNNNN is a discontinued catalog number, while 20G1ABF370JN2NNNNN is the direct replacement configuration.

For an existing installation, the AN2 model remains an important identification number.

For a new project, the JN2 replacement should normally be evaluated.

In terms of overall capability, the 370 A / 690 VAC / Frame 8 combination places this drive firmly in the large industrial motor-control category.

It is best suited to permanent industrial installations where high motor power, centralized automation, local maintenance access, and robust variable-speed control are required.