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Allen-Bradley 20G14TF370JN0NNNNN PowerFlex 755 AC Drive

1. Product Overview

The Allen-Bradley 20G14TF370JN0NNNNN is a high-power PowerFlex 755 AC Drive designed for large industrial motor-control applications.

It belongs to the PowerFlex 750 Series and is part of the PowerFlex 755 product family. The drive is an air-cooled, open-type, Frame 8 configuration designed for high-power three-phase motor systems.

The catalog configuration provides a 370 A class output rating, with approximately 400 kW Light Duty, 355 kW Normal Duty, and 300 kW Heavy Duty capability. It is designed for 690 VAC-class, three-phase motor applications and uses a DC-input configuration with precharge. The product configuration also includes filtering and the common-mode capacitor jumper installed.

The 20G14TF370JN0NNNNN is intended for applications where the motor power is too large for compact general-purpose variable-frequency drives and where the installation requires a more substantial industrial drive platform.

Typical applications include large conveyors, pumps, fans, blowers, compressors, mining machinery, cement and aggregate equipment, material-handling systems, process machinery, and large manufacturing equipment.

The product is also well suited to automation systems that require drive-level diagnostics, industrial network communication, controlled acceleration and deceleration, and integration with a larger plant control architecture.

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2. Brand and Product Family

Parameter	Specification
Model	20G14TF370JN0NNNNN
Brand	Allen-Bradley
Product Family	PowerFlex 750 Series
Product Series	PowerFlex 755
Product Type	PowerFlex Air-Cooled AC Drive
Drive Construction	Open Type
Frame Size	Frame 8
Cooling Method	Forced Air / Air Cooled
Voltage Class	690 VAC
Phase	3 Phase
Input Type	DC Input with Precharge
Current Class	370 A
Light Duty Rating	400 kW
Normal Duty Rating	355 kW
Heavy Duty Rating	300 kW
Dynamic Braking	None
Filtering	Filtered
CM Capacitor Jumper	Installed
HIM	Blank / No HIM
Communication	Embedded EtherNet/IP
Dimensions	Configuration-dependent
Weight	Configuration-dependent kg

The manufacturer’s product description identifies this exact catalog number as a PowerFlex 755 AC Drive with embedded EtherNet/IP, forced-air cooling, DC input with precharge, open Frame 8 construction, 370 A rating, 400 kW LD, 355 kW ND, 300 kW HD, 690 VAC, three-phase operation, filtering, CM jumper installed, no dynamic braking, and blank/no HIM configuration.

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3. Main Technical Parameters

Parameter	20G14TF370JN0NNNNN
Model	20G14TF370JN0NNNNN
Brand	Allen-Bradley
Series	PowerFlex 755
Family	PowerFlex 750 Series
Product Type	Air-Cooled AC Drive
Rated Current Class	370 A
Light Duty	400 kW
Normal Duty	355 kW
Heavy Duty	300 kW
Voltage Class	690 VAC
Phase	Three Phase
Input Architecture	DC Input with Precharge
Nominal DC Bus Class	932 VDC class common-bus application
Frame Size	Frame 8
Enclosure	Open Type
Cooling	Forced Air
Filtering	Filtered
CM Jumper	Installed
Dynamic Braking	None
HIM	Blank / No HIM
Communication	Embedded EtherNet/IP
Installation	Floor-mounted / cabinet-integrated industrial installation
Dimensions	Configuration-dependent
Weight	Configuration-dependent kg
Typical Motor Application	Large 690 V-class industrial motors
Duty Selection	Light Duty / Normal Duty / Heavy Duty

The JN configuration is important because it identifies the filtering/common-mode capacitor jumper arrangement. The exact product description specifies filtered operation with the CM jumper installed.

The DC-input configuration also distinguishes this model from an equivalent AC-input catalog number. It should therefore not be treated as a conventional 690 VAC line-input drive simply because the motor system is rated in the 690 VAC class.

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4. Rated Current and Power

The 20G14TF370JN0NNNNN is a 370 A class PowerFlex 755 drive.

Its principal published power ratings are:

Duty	Current / Power Classification
Light Duty	400 kW
Normal Duty	355 kW
Heavy Duty	300 kW
Current Class	370 A

These different ratings are important when selecting the drive for a real machine.

A motor application with relatively moderate overload requirements may be evaluated against the Light Duty rating.

A general industrial application with continuous operation and conventional overload requirements can be evaluated against the Normal Duty rating.

A machine requiring higher overload capability, more demanding acceleration, or more severe mechanical loading should be evaluated using the Heavy Duty rating.

The published selection data for the 690 V / 932 V DC-input floor-mount PowerFlex 755 range places the 370 A class model at 400 kW LD, 355 kW ND, and 300 kW HD for the single-drive Frame 8 configuration.

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5. 690 VAC Motor System

The 20G14TF370JN0NNNNN is designed for the 690 VAC class.

This makes it especially useful for large industrial motors where a higher motor voltage helps keep operating current at a manageable level.

At high motor power, current becomes a major engineering consideration.

For the same approximate motor power, a higher motor voltage generally allows a lower current than a lower-voltage motor system.

This can have practical benefits for:

• Motor cable sizing.
• Busbar design.
• Switchgear selection.
• Electrical cabinet design.
• Motor feeder arrangements.
• Thermal management.
• Power distribution.

The 690 V class is therefore particularly attractive for large industrial installations where motors can reach several hundred kilowatts.

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6. DC Input and Common-Bus Architecture

One of the most important characteristics of 20G14TF370JN0NNNNN is its DC-input with precharge configuration.

This means the drive is intended for a DC-bus/common-bus architecture rather than being treated as a basic standalone AC-input drive.

The associated PowerFlex 755 common-bus selection data identifies the 690 V / 932 V DC input configuration as part of the floor-mount PowerFlex 755 architecture.

A common-bus system can be particularly useful when several motor drives operate as part of one coordinated industrial process.

In a properly engineered common-bus system, electrical energy can be managed between drive sections through the shared DC system.

This can be useful in systems where one motor is accelerating while another motor is decelerating.

During deceleration, a motor can operate as a generator and return energy to the DC bus. Depending on the overall system architecture, that energy may be available to other connected drive sections.

This type of architecture can therefore provide system-level advantages that are not available from a collection of completely independent drives.

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7. Precharge Function

The drive uses a DC-input configuration with precharge.

Precharge is particularly important in high-power DC-bus systems because the DC link contains significant capacitance and stored electrical energy.

When the system is energized, the precharge arrangement helps control the initial charging process.

This reduces the electrical stress associated with immediately connecting a large DC-bus capacitor bank to the source.

For a high-power installation, the precharge arrangement should be considered together with the complete DC-bus protection, disconnect, fusing, grounding, isolation, and control system.

The drive should therefore be treated as one part of a larger high-energy electrical system.

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8. Frame 8 Construction

The 20G14TF370JN0NNNNN uses Frame 8 construction.

Frame size is particularly important for large industrial drives because the mechanical installation requirements are considerably different from those of smaller wall-mounted drives.

Frame 8 equipment generally requires careful planning for:

• Cabinet structure.
• Floor loading.
• Drive mounting.
• Power-bus connections.
• Motor cable routing.
• Ventilation.
• Cooling-air flow.
• Maintenance access.
• Lifting and handling.
• Service clearance.
• Electrical isolation.

For Frame 8 through Frame 10 floor-mount PowerFlex 755 installations, suitable mechanical handling equipment is required during installation. The published selection information specifically notes the use of a roll-out cart to assist with power wiring and cabinet mounting.

This is an important practical consideration when planning installation of a high-power drive.

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9. Dimensions and Weight

Because this is a large Frame 8 industrial drive and the final mechanical installation can involve the drive package, mounting arrangement, cooling provisions, cabinet structure, and associated components, the exact overall dimensions and shipping weight should be confirmed against the final mechanical drawing.

For catalog-level product information, the following specification is the safest:

Mechanical Parameter	Specification
Model	20G14TF370JN0NNNNN
Frame	Frame 8
Mounting	Floor-mounted / cabinet-integrated
Enclosure	Open Type
Width	Configuration-dependent
Height	Configuration-dependent
Depth	Configuration-dependent
Overall Dimensions	Configuration-dependent
Weight	Configuration-dependent kg
Cabinet Requirement	Industrial cabinet / suitable enclosure
Cooling Clearance	Installation-dependent
Service Clearance	Installation-dependent
Handling	Heavy industrial equipment handling required

The exact dimension drawing should be used when designing the cabinet or mounting structure. The product listing confirms that standard dimension drawings are associated with this catalog number, but an exact overall packaged dimension or weight should not be invented when the final installation configuration is not specified.

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10. Cooling System

The 20G14TF370JN0NNNNN uses forced-air cooling.

Large power semiconductor devices generate considerable heat, especially when the drive is operating at high current for extended periods.

The forced-air system is designed to move cooling air through the power section and remove heat from the drive.

For reliable operation, the surrounding installation must provide appropriate airflow.

The following factors should be considered:

• Ambient temperature.
• Cabinet ventilation.
• Air inlet and outlet arrangement.
• Cooling fan condition.
• Dust accumulation.
• Altitude.
• Motor loading.
• Switching frequency.
• Continuous current.
• Overload duty.

A large air-cooled drive should not be installed in a sealed cabinet without an appropriately engineered thermal-management system.

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11. Filtering and CM Jumper

The exact catalog configuration specifies:

Filtered, CM Jumper Installed.

This configuration is relevant to the electrical noise and common-mode characteristics of the drive installation.

The common-mode capacitor arrangement should be considered together with the motor, motor cable, grounding system, cabinet construction, and overall electromagnetic-compatibility requirements.

This is especially important for large industrial motors because long motor cables and high-power switching can create significant common-mode and electromagnetic effects.

Proper cable routing, grounding, shielding, and installation practices are therefore important when using this drive.

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12. Embedded EtherNet/IP

The 20G14TF370JN0NNNNN includes embedded EtherNet/IP capability.

This allows the drive to be integrated into a larger industrial automation network.

Typical information exchanged between the drive and control system can include:

• Start command.
• Stop command.
• Speed reference.
• Drive status.
• Output frequency.
• Motor current.
• Fault information.
• Alarm information.
• Operating status.
• Diagnostic information.
• Control parameters.

This type of integration is particularly valuable in large production lines.

Instead of treating the drive as an isolated motor controller, the automation system can monitor and control it as an integrated part of the machine.

The PowerFlex 755 family also supports advanced network-oriented control and drive configuration functions, making the platform suitable for larger automation architectures.

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13. HIM Configuration

The catalog configuration is specified as:

Blank / No HIM.

This means the drive does not include a standard local human-interface module as part of this catalog configuration.

This arrangement can be suitable for systems where the drive is installed inside an electrical cabinet and operated primarily through an automation controller or industrial network.

For large centralized systems, removing the local HIM can also provide a cleaner cabinet arrangement when local keypad operation is not required.

If local commissioning or maintenance access is required, the appropriate interface equipment can be evaluated separately.

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14. Dynamic Braking

The 20G14TF370JN0NNNNN is specified with:

Dynamic Braking: None.

This is an important selection parameter.

The absence of a built-in dynamic-braking arrangement does not mean that the motor cannot decelerate.

Instead, the application engineer needs to determine how regenerative energy will be handled.

For example, a large conveyor with substantial moving mass can produce significant regenerative energy during deceleration.

Other examples include:

• High-inertia fans.
• Large centrifugal machines.
• Hoists.
• Downhill conveyors.
• Large rotating process equipment.
• Material-handling equipment.

If rapid deceleration is required, the complete system should be evaluated for braking resistors, regenerative systems, DC-bus energy management, or another suitable braking method.

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15. Product Introduction

The Allen-Bradley 20G14TF370JN0NNNNN is a high-power industrial variable-frequency drive intended for large three-phase AC motors.

Its combination of high current capacity, 690 V-class motor operation, Frame 8 construction, forced-air cooling, DC-input capability, embedded EtherNet/IP, and common-bus architecture makes it particularly suitable for large automated machinery.

The drive is positioned toward applications where reliability, controllability, system integration, and high motor power are more important than simple low-cost speed control.

It can be incorporated into centralized plant automation systems and can be used for applications where the motor needs controlled starting, controlled acceleration, controlled deceleration, adjustable operating speed, and continuous monitoring.

The PowerFlex 755 platform supports several motor-control strategies, allowing it to be used in applications ranging from relatively simple speed regulation to more demanding industrial motion and process-control requirements.

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16. Main Product Advantages

16.1 High Power Capability

The primary advantage of the 20G14TF370JN0NNNNN is its ability to control large industrial motors.

With a 370 A class rating and 400 kW Light Duty capability, the drive is positioned for large machines rather than conventional small and medium motor applications.

This makes it suitable for large industrial installations where motor power can reach several hundred kilowatts.

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16.2 690 V-Class Operation

The 690 V class is another major advantage.

Large motors operating at higher voltage can achieve high power without requiring the extremely high currents that would be necessary at lower motor voltages.

This can simplify certain aspects of large motor power distribution and cable design.

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16.3 Common-Bus Capability

The DC-input configuration makes the model particularly suitable for common-bus systems.

This is useful when multiple drives operate together and the system designer wants to manage energy through a shared DC bus.

A well-designed common-bus system can improve the utilization of regenerative energy and provide a coordinated architecture for multiple large drives.

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16.4 Flexible Duty Ratings

The drive supports three important duty categories:

• Light Duty: 400 kW.
• Normal Duty: 355 kW.
• Heavy Duty: 300 kW.

This allows engineers to select the appropriate capacity according to the actual mechanical load.

The motor should therefore be selected based on current and duty requirements rather than simply comparing nominal motor kW.

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16.5 Industrial Network Integration

Embedded EtherNet/IP makes it easier to integrate the drive with an industrial control system.

This can reduce the need for extensive hardwired status and command signals and can provide better visibility into drive operating conditions.

For modern automated factories, this is a significant practical advantage.

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16.6 Strong Platform Scalability

The PowerFlex 755 family covers a wide range of current and power ratings.

This allows an industrial facility to use a similar drive platform for multiple machine sizes.

A smaller machine can use a lower-current PowerFlex 755 configuration while a much larger machine can use a Frame 8 high-power configuration such as the 20G14TF370JN0NNNNN.

This can simplify engineering standards and maintenance training.

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16.7 Suitable for Large Industrial Loads

The product is well suited to applications where motors operate continuously and mechanical loads are substantial.

Typical examples include large pumps, conveyors, fans, compressors, mining machinery, material-processing equipment, and heavy manufacturing equipment.

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17. Typical Applications

Large Conveyor Systems

Large conveyors are one of the most suitable application areas for this type of drive.

A conveyor can contain a large amount of mechanical inertia, particularly when transporting heavy material over long distances.

Variable-speed control allows the conveyor to accelerate and decelerate in a controlled manner.

This can reduce mechanical shock to:

• Belts.
• Gearboxes.
• Couplings.
• Shafts.
• Bearings.
• Drive pulleys.

The drive can also allow conveyor speed to be adjusted according to the production process.

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Mining Equipment

Mining operations frequently require high-power motors.

Applications can include:

• Ore conveyors.
• Crushers.
• Large pumps.
• Ventilation fans.
• Material feeders.
• Processing equipment.
• Bulk material systems.

The high current capability and 690 V-class operation make the PowerFlex 755 platform suitable for many large mining motor systems when environmental and mechanical requirements are properly addressed.

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Cement Plants

Cement and aggregate facilities contain many high-power motor applications.

Examples include:

• Crushers.
• Conveyors.
• Fans.
• Blowers.
• Mills.
• Feeders.
• Pumps.
• Material-handling systems.

The drive can provide variable-speed control while communicating operating information to the plant automation system.

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Large Pumps

Large pumps are commonly operated with variable-speed drives when process flow or pressure needs to be controlled.

The 20G14TF370JN0NNNNN can be used for high-power pumping applications where the motor current and voltage are within the drive’s rated range.

Variable-speed operation can also allow the pumping system to respond more closely to actual process demand.

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Large Fans and Blowers

Large fans can consume substantial electrical power.

A variable-speed drive allows airflow to be adjusted without requiring the motor to run continuously at maximum speed.

Potential applications include:

• Industrial ventilation.
• Process cooling.
• Combustion air.
• Exhaust systems.
• Furnace systems.
• Mine ventilation.
• Cement-process ventilation.

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Compressors

Large compressors often require careful control of acceleration, operating speed, and deceleration.

The PowerFlex 755 architecture can provide a suitable control platform for large compressor motors when the motor, compressor, and drive are properly matched.

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Material Processing Equipment

Large material-processing machinery can contain multiple high-power motors.

The common-bus architecture is particularly interesting for systems where several motors operate together and where regenerative energy may be present.

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18. Industrial Automation Applications

The 20G14TF370JN0NNNNN is not limited to standalone motor control.

It can be integrated into a larger automation system.

For example, a large production line can use a programmable controller to manage:

• Motor start and stop.
• Speed references.
• Process sequencing.
• Fault monitoring.
• Alarm management.
• Production speed.
• Interlocks.
• Emergency shutdown logic.
• Drive diagnostics.

The drive’s network integration capability makes it easier to exchange this information with the supervisory control system.

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19. Installation Considerations

Because this is a high-power Frame 8 drive, installation planning is especially important.

The cabinet must be mechanically strong enough to support the equipment.

The electrical design must account for:

• DC-bus voltage.
• High current.
• Short-circuit protection.
• Grounding.
• Isolation.
• Motor cable routing.
• Control wiring.
• Network communication.
• Thermal management.
• Service access.

The installation should also provide adequate clearance for maintenance and cooling.

For a large floor-mount drive, the mechanical handling method should be determined before installation begins.

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20. Maintenance Considerations

The air-cooling system should be kept clean and unobstructed.

Periodic maintenance should include inspection of:

• Cooling fans.
• Air passages.
• Electrical terminals.
• Cabinet ventilation.
• Grounding connections.
• Motor cable connections.
• DC-bus connections.
• Network connections.
• Signs of overheating.
• Dust and contamination.

In a harsh industrial environment, dust accumulation can become a significant thermal problem.

Preventive maintenance is therefore particularly important for large air-cooled drives.

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21. Five Same-Series / Closely Related Models

The following models are closely related to the 20G14TF370JN0NNNNN and are useful when selecting a higher- or lower-capacity PowerFlex 755 drive.

Model	Current Class	Light Duty	Normal Duty	Heavy Duty	Frame
20G14TF265JN0NNNNN	265 A	315 kW	250 kW	200 kW	Frame 8
20G14TF330JN0NNNNN	330 A	355 kW	315 kW	250 kW	Frame 8
20G14TF370JN0NNNNN	370 A	400 kW	355 kW	300 kW	Frame 8
20G14TF415JN0NNNNN	415 A	450 kW	400 kW	355 kW	Frame 8
20G14TF460JN0NNNNN	460 A	500 kW	450 kW	375 kW	Frame 8

These ratings represent the single-unit Frame 8 configuration. The same catalog families can also appear in multiple-unit Frame 9 and Frame 10 common-bus arrangements, where the combined system capacity is significantly higher.

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22. Same-Series Model Comparison

Model	Current	LD	ND	HD	Voltage Class	Cooling
20G14TF265JN0NNNNN	265 A	315 kW	250 kW	200 kW	690 VAC	Air Cooled
20G14TF330JN0NNNNN	330 A	355 kW	315 kW	250 kW	690 VAC	Air Cooled
20G14TF370JN0NNNNN	370 A	400 kW	355 kW	300 kW	690 VAC	Air Cooled
20G14TF415JN0NNNNN	415 A	450 kW	400 kW	355 kW	690 VAC	Air Cooled
20G14TF460JN0NNNNN	460 A	500 kW	450 kW	375 kW	690 VAC	Air Cooled

The 20G14TF370JN0NNNNN sits in the middle of this group.

The 265 A model is useful when a lower motor current is sufficient.

The 330 A model provides a smaller step below the 370 A class.

The 415 A model provides additional capacity where the motor current approaches or exceeds the 370 A range.

The 460 A model provides another step upward for larger motor applications.

This progression makes the PowerFlex 755 family convenient for plant-wide standardization.

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23. Same-Series Mechanical and Functional Comparison

Model	Model	Frame	Voltage Class	Input	Cooling	Dimensions	Weight
—	20G14TF265JN0NNNNN	Frame 8	690 VAC	DC Input with Precharge	Forced Air	Configuration-dependent	Configuration-dependent kg
—	20G14TF330JN0NNNNN	Frame 8	690 VAC	DC Input with Precharge	Forced Air	Configuration-dependent	Configuration-dependent kg
—	20G14TF370JN0NNNNN	Frame 8	690 VAC	DC Input with Precharge	Forced Air	Configuration-dependent	Configuration-dependent kg
—	20G14TF415JN0NNNNN	Frame 8	690 VAC	DC Input with Precharge	Forced Air	Configuration-dependent	Configuration-dependent kg
—	20G14TF460JN0NNNNN	Frame 8	690 VAC	DC Input with Precharge	Forced Air	Configuration-dependent	Configuration-dependent kg

The dimensions and weight are intentionally identified as configuration-dependent rather than using an approximate number that could be misleading in a procurement or engineering document.

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24. Five Popular Allen-Bradley Models for Comparison

The following five models provide useful comparisons across the same broad Allen-Bradley PowerFlex drive platform.

Model	Product Family	Voltage Class	Current / Capacity	Typical Position
20G11GD034AA0NNNNN	PowerFlex 755	480 VAC class	34 A class	Medium industrial applications
20G11GD052AA0NNNNN	PowerFlex 755	480 VAC class	52 A class	Pumps, fans, conveyors
20G11GD077AA0NNNNN	PowerFlex 755	480 VAC class	77 A class	Medium/high-power machinery
20G14TE510JN0NNNNN	PowerFlex 755	600 VAC class	510 A class	Large industrial motor systems
20G14TD740JN0NNNNN	PowerFlex 755	High-power configuration	740 A class	Very high-power applications

These models are not direct drop-in replacements for the 20G14TF370JN0NNNNN.

The differences in voltage class, input architecture, current rating, frame arrangement, and catalog options must be checked before selecting one as an alternative.

They are useful primarily as comparison points when evaluating the broader Allen-Bradley PowerFlex product range.

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25. Five Popular Models – Detailed Comparison

Model	Series	Approximate Application Level	Voltage Class	Typical Use
20G11GD034AA0NNNNN	PowerFlex 755	Medium power	480 VAC class	Pumps, fans, conveyors, machinery
20G11GD052AA0NNNNN	PowerFlex 755	Medium power	480 VAC class	Industrial process equipment
20G11GD077AA0NNNNN	PowerFlex 755	Medium/high power	480 VAC class	Larger industrial motors
20G14TE510JN0NNNNN	PowerFlex 755	High power	600 VAC class	Large industrial motor systems
20G14TD740JN0NNNNN	PowerFlex 755	Very high power	High-power configuration	Large process and material-handling equipment

The purpose of this table is to show the range of available PowerFlex 755 configurations rather than to imply that all five models have the same electrical characteristics.

For replacement applications, the original catalog number should always be compared character-by-character with the proposed replacement.

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26. Why the 20G14TF370JN0NNNNN Is a Strong Choice

The 20G14TF370JN0NNNNN is particularly attractive when an industrial project has several of the following characteristics:

• Large motor power.
• 690 V-class motor system.
• High continuous current.
• Common DC-bus architecture.
• Large conveyor or process machinery.
• Requirement for controlled acceleration.
• Requirement for controlled speed.
• Industrial Ethernet integration.
• Centralized automation.
• High mechanical inertia.
• Large production equipment.
• Need for a scalable drive family.

Its combination of high power and industrial communication makes it suitable for sophisticated production environments.

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27. Advantages for Large Conveyors

For large conveyor systems, controlled acceleration is often as important as steady-state speed control.

A sudden application of torque can create mechanical stress throughout the conveyor system.

A properly configured variable-frequency drive can gradually increase motor speed and torque.

This can help reduce stress on the belt, gearbox, coupling, pulley, and supporting mechanical structure.

During controlled stopping, the drive can also manage deceleration according to the process requirements.

If the conveyor has substantial regenerative energy, however, the complete braking and energy-management system must be designed separately because this particular catalog configuration does not include dynamic braking.

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28. Advantages for Pump Systems

Pump applications can benefit from variable-speed operation because flow and pressure requirements often change during the production process.

The drive can allow the motor to operate at different speeds rather than continuously operating at full speed.

For large pumps, this can provide better process control and potentially reduce unnecessary energy consumption.

The actual energy savings depend on the pump type, system curve, operating point, control strategy, and process requirements.

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29. Advantages for Fan Systems

Large industrial fans often operate for long periods.

If the required airflow changes, a variable-speed drive can adjust motor speed accordingly.

This is useful in:

• Factory ventilation.
• Mine ventilation.
• Furnace systems.
• Process exhaust.
• Cooling systems.
• Cement plants.
• Industrial combustion systems.

The 690 V class is particularly relevant for large fan motors where power levels can be substantial.

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30. Advantages for Mining and Heavy Industry

Heavy industries often require high-power motors and robust drive systems.

Mining, cement, steel-related processing, bulk material handling, and large manufacturing operations can all contain motor loads in the several-hundred-kilowatt range.

The 20G14TF370JN0NNNNN provides the current capacity and system architecture necessary for these types of applications.

Its Frame 8 construction also reflects its intended use as a large industrial installation rather than a compact machine-level inverter.

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31. Engineering Selection Checklist

Before purchasing or replacing the 20G14TF370JN0NNNNN, the following information should be checked.

Selection Item	What to Verify
Motor Voltage	Confirm compatibility with 690 V-class motor system
Motor Current	Confirm motor full-load current is within the selected duty rating
Motor Power	Compare against LD / ND / HD rating
Motor Frequency	Confirm required operating frequency
Motor Speed	Confirm operating speed range
Load Type	Pump, fan, conveyor, compressor, hoist, process machinery, etc.
Overload	Determine required overload capability
Acceleration	Check required acceleration time
Deceleration	Check required deceleration time
Regeneration	Determine whether regenerative energy is present
Braking	Determine external braking requirements
DC Bus	Verify common-bus voltage and protection arrangement
Cabinet	Verify Frame 8 mechanical requirements
Cooling	Verify airflow and thermal capacity
Ambient	Verify temperature and environmental conditions
Motor Cable	Check cable size and length
Grounding	Verify grounding and common-mode arrangement
Communication	Confirm EtherNet/IP requirements
Local Interface	Determine whether a HIM is required
Dimensions	Confirm exact mechanical drawing
Weight	Confirm final equipment / shipping weight

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32. Product Summary

Category	Specification
Model	20G14TF370JN0NNNNN
Brand	Allen-Bradley
Product Family	PowerFlex 750 Series
Product Series	PowerFlex 755
Product Type	Air-Cooled AC Drive
Current	370 A class
Light Duty	400 kW
Normal Duty	355 kW
Heavy Duty	300 kW
Voltage Class	690 VAC
Phase	3 Phase
Input	DC Input with Precharge
DC Bus Class	932 VDC class
Frame	Frame 8
Cooling	Forced Air
Enclosure	Open Type
Filtering	Filtered
CM Jumper	Installed
Dynamic Braking	None
HIM	Blank / No HIM
Communication	Embedded EtherNet/IP
Dimensions	Configuration-dependent
Weight	Configuration-dependent kg
Main Applications	Conveyors, pumps, fans, compressors, mining, cement, material handling, process machinery
Application Level	High-power industrial motor control

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33. Final Product Evaluation

The Allen-Bradley 20G14TF370JN0NNNNN is a high-power PowerFlex 755 drive intended for demanding industrial motor-control applications.

Its 370 A class capacity, 400 kW Light Duty rating, 355 kW Normal Duty rating, and 300 kW Heavy Duty rating provide substantial motor-control capability for large industrial machinery.

The 690 VAC class, Frame 8 construction, forced-air cooling, DC input with precharge, filtered configuration, CM jumper installed, and embedded EtherNet/IP make it particularly suitable for large-scale industrial automation systems.

Its strongest application areas include large conveyors, mining equipment, cement machinery, pumps, fans, compressors, material-processing equipment, and large manufacturing machines.

The DC-input/common-bus architecture is especially useful for multi-drive systems where electrical energy needs to be managed through a shared DC bus.

From an engineering perspective, the most important point is to select the drive according to the motor’s actual current, duty cycle, overload requirement, mechanical load, braking requirement, and electrical architecture.

The 20G14TF370JN0NNNNN is therefore best viewed as a high-power industrial drive platform for large, integrated motor-control systems rather than simply as a high-kilowatt frequency converter.