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Allen-Bradley 20G14TD485JN0NNNNN

PowerFlex 755 AC Packaged Drive – Detailed Product Description, Specifications, Applications and Recommended Models

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1. Product Overview

The Allen-Bradley 20G14TD485JN0NNNNN is a high-power industrial AC drive designed for demanding motor-control applications. It belongs to the PowerFlex 755 family and is intended for applications where reliable variable-speed control, high continuous output capability, and flexible integration into industrial automation systems are required.

This model is an air-cooled AC packaged drive configured for high-power operation. Its catalog configuration includes a 480 VAC, three-phase electrical rating, a 485 A drive configuration, and DC input functionality with precharge. The unit is designed for large industrial motors and is suitable for installations where controlled acceleration, deceleration, speed regulation, torque management, and reduced mechanical stress are important.

The 20G14TD485JN0NNNNN is generally associated with high-power motor applications such as pumps, fans, compressors, conveyors, processing machinery, mixers, extruders, and other continuous-duty industrial equipment.

Because this is a configurable high-power drive, some physical and electrical characteristics can depend on the final frame arrangement and installed accessories. The information below describes the standard configuration represented by the catalog number.

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2. Basic Product Identification

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3. Detailed Technical Parameters

Main Electrical and Mechanical Parameters

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Important Note Regarding Dimensions and Weight

The 20G14TD485JN0NNNNN is a large configurable industrial drive. For high-power Frame 8 products, physical dimensions and weight can vary depending on the exact enclosure arrangement, installed options, mounting accessories, cabinet configuration, and transportation configuration.

For engineering purposes, the final height × width × depth and weight in kg should therefore be confirmed against the mechanical drawing for the exact delivered configuration before cabinet fabrication, lifting, transportation, or structural design.

A practical mechanical planning table is shown below:

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4. Product Introduction

The 20G14TD485JN0NNNNN is designed for industrial environments where conventional across-the-line motor starting is not sufficient. Instead of operating a motor at one fixed speed, the drive allows the motor’s operating speed and output behavior to be adjusted according to the requirements of the process.

This is particularly valuable in applications where the required motor speed changes during operation. By regulating motor frequency and voltage through an electronic power conversion process, the drive can provide controlled starting, smoother acceleration, adjustable operating speed, controlled deceleration, and improved process management.

For large motors, uncontrolled starting can create substantial electrical and mechanical stress. A high-power AC drive helps reduce these effects by allowing acceleration and operating conditions to be controlled more precisely.

The PowerFlex 755 platform is also designed for integration into complex automation systems. Depending on the selected control and communication options, a drive installation can be integrated with supervisory control systems, machine control systems, industrial networks, monitoring systems, and plant-level automation architectures.

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5. Product Series Introduction – PowerFlex 755

The PowerFlex 755 series is a high-performance industrial AC drive platform intended for demanding motor-control applications.

The series is particularly suitable for medium- and high-power applications where equipment availability, flexible motor control, scalability, and system integration are important.

PowerFlex 755 drives are commonly selected for applications requiring:

• Large motor capacity.
• Continuous industrial operation.
• Adjustable motor speed.
• High torque capability.
• Controlled acceleration and deceleration.
• Integration with industrial automation systems.
• Advanced diagnostics.
• Flexible communication capability.
• Multiple duty ratings.
• Air-cooled high-power configurations.

One of the advantages of the series is its ability to support different operating duty levels. Depending on the application, a drive may be applied using different current and horsepower ratings under Light Duty, Normal Duty, or Heavy Duty conditions.

This makes the series suitable for a broad range of motor loads.

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6. Product Configuration Analysis

The catalog number 20G14TD485JN0NNNNN identifies a specific configuration within the high-power PowerFlex 755 product range.

The important characteristics of this configuration include:

High-Power Current Capability

The 485 A configuration is suitable for large industrial motors and high-capacity equipment. This makes the model particularly appropriate for installations where motor power requirements exceed the capabilities of standard compact drives.

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480 VAC Voltage Class

The drive is designed around a 480 VAC industrial voltage class, commonly used in large industrial facilities.

The three-phase electrical configuration makes it appropriate for heavy industrial motor systems.

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Air Cooling

Air cooling provides an effective cooling method for industrial installations when the required ventilation conditions are maintained.

Proper installation clearance and airflow are important because high-power electronic equipment generates significant heat during operation.

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DC Input with Precharge

The DC input with precharge configuration supports applications that use common DC bus architectures or other compatible DC supply arrangements.

Precharge functionality helps manage the charging process of the drive’s internal DC bus capacitors during energization.

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Filtered Configuration

The filtered configuration helps support electromagnetic compatibility and electrical system performance.

The exact filtering requirements of an installation should always be evaluated according to the complete electrical system, cable lengths, motor characteristics, grounding arrangement, and applicable industrial standards.

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7. Main Applications

7.1 Industrial Pump Systems

The drive can be used for controlling large industrial pumps.

Typical applications include:

• Water transfer pumps.
• Process pumps.
• Cooling-water systems.
• Circulation pumps.
• Irrigation pumping systems.
• Pressure-control systems.
• Industrial wastewater systems.
• Chemical transfer systems.

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

Instead of running a pump continuously at maximum speed and regulating flow using mechanical throttling, the motor speed can be adjusted electronically.

This can improve process control and may reduce unnecessary mechanical losses.

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7.2 Fan and Blower Systems

Large industrial fans and blowers are another major application area.

Typical uses include:

• Ventilation systems.
• Exhaust systems.
• Combustion air systems.
• Process air systems.
• Industrial drying systems.
• Cooling systems.
• Dust collection equipment.
• Air handling equipment.

The drive can regulate fan speed according to airflow, pressure, temperature, or process requirements.

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7.3 Conveyor Systems

The 20G14TD485JN0NNNNN can be applied to large conveyor systems requiring controlled acceleration and adjustable speed.

Examples include:

• Bulk material conveyors.
• Mining conveyors.
• Manufacturing lines.
• Packaging conveyors.
• Warehouse transport systems.
• Process material handling systems.

Controlled acceleration can help reduce mechanical shock on belts, gearboxes, couplings, and other drive components.

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7.4 Compressor Applications

Variable-speed compressor systems can benefit from precise motor-speed control.

Potential applications include:

• Industrial air compressors.
• Process gas compressors.
• Refrigeration compressors.
• Large pumping and compression systems.

Speed control allows compressor output to better match system demand.

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7.5 Mixers and Agitators

Industrial mixing applications often require variable operating speeds depending on material characteristics.

The drive can support applications such as:

• Chemical mixers.
• Food-processing mixers.
• Water-treatment agitators.
• Pharmaceutical process equipment.
• Industrial blending systems.

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7.6 Extrusion and Process Machinery

High-power variable-speed control is important in extrusion and continuous-processing applications.

Potential applications include:

• Plastic extrusion.
• Rubber processing.
• Continuous production lines.
• Material processing systems.
• Heavy industrial machinery.

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7.7 Material Handling

The product can be used in large-scale material-handling systems requiring reliable and adjustable motor control.

Applications may include:

• Bulk handling.
• Heavy conveyors.
• Industrial transport equipment.
• Automated production systems.

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8. Main Product Advantages

8.1 High-Power Motor Control

The major advantage of this model is its suitability for high-power motor applications.

With a 485 A configuration and high-duty horsepower capability, the drive can be used for industrial equipment beyond the range normally handled by compact variable-frequency drives.

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8.2 Variable-Speed Operation

The drive allows motor speed to be adjusted according to the needs of the process.

This provides greater flexibility compared with fixed-speed motor operation.

In many industrial systems, speed control can improve:

• Process consistency.
• Production flexibility.
• Mechanical control.
• Energy management.
• Equipment operating efficiency.

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8.3 Multiple Duty Ratings

The product platform supports different duty categories.

The approximate ratings associated with this configuration include:

This flexibility allows engineers to select an appropriate operating rating based on load characteristics.

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8.4 Controlled Starting

Direct motor starting can produce high inrush current and significant mechanical stress.

The drive provides controlled acceleration, allowing the motor to gradually reach the required operating speed.

This can help reduce stress on:

• Motors.
• Couplings.
• Gearboxes.
• Belts.
• Pumps.
• Conveyor systems.
• Process machinery.

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8.5 Process Optimization

Because motor speed can be adjusted continuously, industrial processes can operate closer to their actual demand.

This is useful where process requirements vary during operation.

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8.6 Suitable for Large Industrial Systems

The high-power design makes this model suitable for demanding industrial installations.

Typical operating environments include:

• Manufacturing plants.
• Process facilities.
• Water-treatment systems.
• Material-handling facilities.
• Heavy industrial production lines.

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8.7 Flexible Automation Integration

The PowerFlex 755 platform is designed for integration into larger automation architectures.

Depending on the installed options and control configuration, the drive can support communication and control integration with industrial systems.

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9. Recommended Models from the Same or Closely Related Series

The following models are closely related to 20G14TD485JN0NNNNN and belong to the same high-power product family or configuration range.

Same-Series / Closely Related Models

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Recommended Model 1 – 20G14TD430JN0NNNNN

20G14TD430JN0NNNNN is a lower-capacity alternative within the same configuration family.

It is suitable for applications that require similar drive architecture but have lower motor power requirements.

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Recommended Model 2 – 20G14TD545JN0NNNNN

20G14TD545JN0NNNNN is a higher-current alternative for applications requiring greater output capacity.

It is suitable for larger motors or applications where a higher drive rating is required.

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Recommended Model 3 – 20G14TD617JN0NNNNN

20G14TD617JN0NNNNN is suitable for applications requiring approximately 500 HP under Normal Duty conditions.

It provides a higher output capacity than the 485 A configuration.

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Recommended Model 4 – 20G14TD710JN0NNNNN

20G14TD710JN0NNNNN is intended for larger industrial motor applications requiring significantly higher current and horsepower capacity.

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Recommended Model 5 – 20G14TD740JN0NNNNN

20G14TD740JN0NNNNN is a higher-capacity model suitable for major industrial installations requiring approximately 650 HP under Normal Duty conditions.

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10. Five Popular Recommended Models from the Same Brand

The following models are popular choices from the same industrial automation brand and cover different application ranges.

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Popular Model 1 – 20F11ND077JA0NNNNN

20F11ND077JA0NNNNN is a PowerFlex 753-series AC drive suitable for industrial applications requiring a lower power range than the 20G14TD485JN0NNNNN.

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Popular Model 2 – 20F11ND034JA0NNNNN

20F11ND034JA0NNNNN is suitable for medium-power industrial motor applications.

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Popular Model 3 – 20G11ND052AA0NNNNN

20G11ND052AA0NNNNN is a PowerFlex 755 model intended for applications requiring high-performance AC motor control.

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Popular Model 4 – 20G11ND027AA0NNNNN

20G11ND027AA0NNNNN is suitable for medium-power industrial applications where variable-speed control and automation integration are required.

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Popular Model 5 – 20G14TD485JN0NNNNN

20G14TD485JN0NNNNN remains the recommended choice among the listed high-power products when the application requires approximately 400 HP under Normal Duty operation.

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11. Product Selection Summary

The 20G14TD485JN0NNNNN is most suitable when the application requires a large-capacity industrial drive with approximately 400 HP Normal Duty capability and a 485 A configuration.

It is particularly appropriate for:

• Large industrial pumps.
• High-capacity fans.
• Blowers.
• Compressors.
• Heavy conveyor systems.
• Process machinery.
• Material-handling equipment.
• Large mixing systems.
• Continuous production equipment.

For lower power requirements, 20G14TD430JN0NNNNN may be considered.

For increased capacity, 20G14TD545JN0NNNNN, 20G14TD617JN0NNNNN, 20G14TD710JN0NNNNN, and 20G14TD740JN0NNNNN provide progressively higher output ratings within the closely related product range.

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12. Final Conclusion

The Allen-Bradley 20G14TD485JN0NNNNN is a high-power PowerFlex 755 AC drive designed for demanding industrial motor-control applications. Its approximately 485 A Normal Duty configuration, 480 VAC three-phase voltage class, air-cooled design, and Frame 8 high-power architecture make it suitable for large industrial equipment requiring reliable variable-speed operation.

The product offers advantages in motor speed regulation, controlled starting, process optimization, mechanical stress reduction, and high-power industrial application capability.

When selecting this product, particular attention should be given to the actual motor load, required duty classification, installation environment, cooling requirements, electrical protection, cable arrangement, and the final mechanical dimensions and weight in kg for the exact delivered configuration.

For cabinet design, transportation, lifting, or structural engineering, the exact dimensions and weight (kg) should be confirmed according to the specific final product configuration rather than estimated from the catalog number alone.