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20G11BF960AN0NNNNN — Detailed Product Introduction, Technical Parameters, Applications, Advantages and Related Models

The 20G11BF960AN0NNNNN is a high-power industrial variable-frequency AC drive in the PowerFlex 755 product family.

It is designed for large three-phase motor applications where high current capacity, adjustable motor speed, controlled acceleration and deceleration, and integration with industrial automation systems are required.

This model is positioned at a very high power level, with a 960 A current class and 690 VAC input class, making it suitable for large motors used in heavy industrial machinery, material handling, pumps, fans, process equipment and other demanding applications.

The information below is written as a practical product-description and selection document. Since you specifically requested that no internet research be used, the mechanical figures marked as approximate should be treated as engineering planning values rather than final installation dimensions. For an actual purchase or replacement project, the final mechanical drawing and nameplate should be checked before fabrication or installation.

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1. Basic Product Information

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2. Product Overview

The 20G11BF960AN0NNNNN is a large-frame AC drive intended to regulate the speed and torque of high-power electric motors.

Its main purpose is to take incoming three-phase AC electrical power and convert it into a controlled variable-frequency output for the motor.

A conventional fixed-speed motor system generally operates the motor close to its nominal speed whenever the motor is energized.

A variable-frequency drive provides considerably more flexibility.

The drive can control motor speed according to the actual process requirement, allowing machinery to operate at different speeds during starting, normal production, adjustment and shutdown.

A simplified operating structure is:

690 VAC Three-Phase Supply

↓

Input and Precharge Section

↓

DC Bus

↓

Power Conversion Section

↓

Variable-Frequency AC Output

↓

Large Three-Phase Motor

↓

Industrial Machine

This arrangement is especially useful for large machinery where starting current, mechanical stress, speed regulation and process control need to be managed carefully.

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3. Product Series

The model belongs to the PowerFlex 755 series within the broader PowerFlex 750-Series platform.

The PowerFlex 755 platform is intended for industrial applications requiring more capability than a basic compact variable-frequency drive.

The platform is particularly suitable for large machines where the drive may need to communicate with a plant control system and where the motor requires controlled speed and torque.

Typical applications include:

• Large conveyors.
• Mining machinery.
• Material-handling systems.
• Large pumps.
• Large fans.
• Blowers.
• Cement machinery.
• Metals processing equipment.
• Heavy process machinery.
• Industrial production lines.
• Large rotating equipment.
• Bulk material transportation systems.

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4. Main Electrical Specifications

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5. 960 A Current Capacity

The most important electrical characteristic of the 20G11BF960AN0NNNNN is its approximately 960 A current rating.

A 960 A drive is intended for very large motor systems.

This current level places the product considerably above the current range normally associated with compact machine drives.

It is more appropriate for equipment such as:

• Large mining conveyors.
• Large process pumps.
• Large ventilation fans.
• Heavy material-handling systems.
• Large industrial blowers.
• Cement plant machinery.
• Heavy manufacturing equipment.
• Large rotating process equipment.

When selecting the drive, motor nameplate current should be treated as one of the most important selection parameters.

Motor horsepower alone should not be used as the only selection criterion.

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6. 690 VAC Voltage Class

The model is designed around the 690 VAC industrial voltage class.

This voltage level is commonly associated with high-power motor systems.

For large motors, higher motor voltage can help manage the current required by the motor compared with a lower-voltage equivalent.

The complete electrical system should nevertheless be evaluated as a whole.

Important factors include:

• Motor rated voltage.
• Motor rated current.
• Motor power factor.
• Motor efficiency.
• Transformer configuration.
• Short-circuit capacity.
• Cable sizing.
• Grounding arrangement.
• Protective devices.
• Motor insulation system.

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7. Approximate Power Class

The exact usable horsepower or kilowatt rating depends on the duty classification and application conditions.

For preliminary comparison, the 960 A / 690 VAC configuration should be considered a very-high-power industrial drive class.

A rough engineering comparison can place it around the 700 kW class or higher, depending on the applicable duty and motor operating conditions.

The important point is that the drive is designed for motors substantially larger than those normally handled by small and medium industrial drives.

The motor nameplate current and required duty should always take priority over a simple kW or HP comparison.

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8. Physical Dimensions

The 20G11BF960AN0NNNNN is a large Frame 9 industrial drive.

Because of its high-power electrical section, it should be considered floor-standing equipment rather than a small wall-mounted VFD.

For preliminary layout planning, a large Frame 9 configuration may be considered approximately within the following range:

These figures are intended for preliminary planning only.

The actual dimensions can depend on the exact catalog configuration, cabinet arrangement and production revision.

For a real installation, the final equipment drawing should be used for:

• Foundation design.
• Cabinet placement.
• Cable entry.
• Lifting calculations.
• Transportation.
• Maintenance clearance.

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9. Weight and Transportation

A unit in this power class can weigh approximately 1246 kg, so transportation and installation need to be planned carefully.

This is significantly heavier than compact or medium-size VFD products.

Before installation, the following should be considered:

The weight is also important when replacing older equipment.

A replacement drive may have a similar electrical rating but a different cabinet arrangement, so the existing foundation should not automatically be assumed to be suitable.

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10. Cooling System

The product uses an air-cooled configuration.

High-power semiconductor switching devices generate considerable heat during operation.

The cooling system therefore needs to move heat away from the power section and into the surrounding environment.

Good thermal management is important for long-term reliability.

Important considerations include:

• Clean air supply.
• Adequate airflow.
• Correct room temperature.
• Proper cabinet ventilation.
• Regular inspection of cooling fans.
• Prevention of blocked air passages.
• Appropriate electrical-room HVAC capacity.

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11. Industrial Enclosure

The product is associated with an IP20 / NEMA Type 1 class configuration.

This type of enclosure is intended primarily for indoor industrial electrical environments.

It should not be treated as a weatherproof outdoor enclosure.

For installation in areas exposed to:

• Water.
• Condensation.
• Heavy dust.
• Corrosive chemicals.
• Excessive humidity.
• Outdoor weather.

additional environmental protection may be required.

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12. Filtered Configuration

The model is configured with filtering intended to help manage electrical interference associated with high-power switching equipment.

A variable-frequency drive switches power semiconductor devices at high speed.

This switching action is necessary for motor control but can also produce electrical noise.

The overall installation should therefore consider:

• Grounding.
• Bonding.
• Motor cable construction.
• Cable routing.
• Shielding.
• Control-cable separation.
• Cabinet layout.
• Input and output cable separation.

The internal filter is only one element of the complete EMC installation strategy.

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13. Common-Mode Capacitor Configuration

The catalog configuration includes a common-mode capacitor jumper arrangement.

This is relevant to the electrical relationship between the drive, ground and the incoming power system.

It becomes particularly important when the drive is being used as a replacement for another unit.

A replacement should not be selected solely by matching:

960 A + 690 VAC

The complete catalog number should be compared because configuration details can affect installation and system compatibility.

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14. Dynamic Braking

The specified configuration does not include dynamic braking.

This is an important consideration for high-inertia machinery.

When a motor decelerates, the rotating mechanical system can return energy through the motor into the drive’s DC bus.

If the application requires extremely rapid deceleration, this energy must be handled appropriately.

Applications that deserve particular attention include:

• High-inertia conveyors.
• Large fans.
• Large centrifuges.
• Heavy rotating machinery.
• Hoisting-related equipment.
• Rapid cycling machinery.
• Large material-handling systems.

The braking requirements should therefore be evaluated during the drive-selection process.

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15. Operator Interface

The AN0 configuration should be distinguished from configurations that specifically include a door-mounted enhanced LCD HIM.

The catalog-number suffix determines the exact interface and option configuration.

Therefore, the 20G11BF960AN0NNNNN should not automatically be assumed to have exactly the same local operator-interface configuration as a JN2 version.

For installations where local keypad operation is important, the exact HIM configuration should be checked before ordering.

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16. Product Applications

16.1 Large Conveyor Systems

Large conveyors are one of the most suitable applications for a high-current variable-frequency drive.

A conveyor can have substantial inertia, particularly when it is:

• Long.
• Heavily loaded.
• Carrying bulk material.
• Operating continuously.
• Driven through a large gearbox.

A variable-frequency drive can provide controlled acceleration instead of applying full motor torque immediately.

This can reduce mechanical shock to:

• Conveyor belts.
• Gearboxes.
• Couplings.
• Shafts.
• Bearings.

The ability to vary speed also allows the production process to respond to changing material flow.

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17. Mining Applications

The high-current capacity makes this type of drive suitable for large mining machinery.

Potential applications include:

• Long-distance conveyors.
• Ore transportation systems.
• Material transfer equipment.
• Large ventilation systems.
• Large pumps.
• Processing machinery.

Mining facilities often operate continuously, so drive reliability and thermal management are important.

The electrical room should be designed to keep the drive within its specified environmental limits.

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18. Large Pump Applications

Large pumps often need to operate at different flow rates.

Running a pump continuously at maximum speed may not always be necessary.

Variable-speed control allows the motor to adjust according to process demand.

Potential applications include:

• Water transfer.
• Cooling-water circulation.
• Industrial process pumping.
• Mining dewatering.
• Wastewater pumping.
• Large circulation systems.

The actual energy-saving benefit depends on the pump system, piping arrangement and operating profile.

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19. Large Fan and Blower Applications

Large fans and blowers are another important application.

Industrial facilities can use large motors for:

• Furnace ventilation.
• Exhaust systems.
• Process ventilation.
• Dust collection.
• Combustion air.
• Industrial cooling.
• Air movement.

A variable-frequency drive can adjust fan speed according to actual airflow demand.

This can improve process flexibility and, in suitable systems, reduce energy consumption.

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20. Cement Industry Applications

Large cement and mineral-processing facilities use many high-power motors.

Possible applications include:

• Large process fans.
• Material conveyors.
• Blowers.
• Pumps.
• Material-handling systems.
• Auxiliary process equipment.

The 960 A drive class is particularly relevant where motor current is too high for smaller PowerFlex configurations.

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21. Metals and Heavy Manufacturing

Heavy manufacturing facilities can require very large motors for:

• Material transport.
• Cooling systems.
• Fans.
• Pumps.
• Process lines.
• Large rotating machinery.

The ability to regulate motor speed provides greater process flexibility compared with fixed-speed motor operation.

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22. Process Industry Applications

The drive can also be considered for large process equipment.

Typical examples include:

• Process pumps.
• Large fans.
• Blowers.
• Material-handling equipment.
• Circulation systems.
• Large mechanical production equipment.

For each application, the motor’s actual duty cycle and load characteristics should be evaluated.

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23. Major Product Advantages

23.1 Very High Current Capacity

The 960 A current rating makes this model suitable for very large motors.

It is substantially more powerful than the smaller drive configurations in the same family.

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23.2 690 VAC Industrial Voltage

The 690 VAC class is appropriate for large industrial motor systems.

It allows the drive to serve high-power equipment without relying on the lower-voltage motor classes commonly used for smaller machinery.

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23.3 Large Frame 9 Construction

Frame 9 provides the physical space required for high-current power components, cooling systems and associated electrical equipment.

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23.4 Variable-Speed Operation

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

This can provide:

• Better process control.
• Controlled acceleration.
• Controlled deceleration.
• Reduced mechanical shock.
• Flexible production rates.

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23.5 Industrial Automation Integration

The PowerFlex 755 platform is designed to operate as part of an industrial automation system.

This makes it suitable for applications where the motor drive needs to exchange information with controllers and other plant equipment.

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23.6 Air-Cooled Design

Air cooling provides a familiar installation approach for industrial electrical rooms.

Proper ventilation and thermal management are nevertheless essential.

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23.7 High-Power Application Flexibility

The drive can be used in a wide range of large industrial machines.

Its application range is broader than a drive designed for a single dedicated machine type.

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24. Technical Parameter Table

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25. Five Recommended Same-Series or Related Models

The following models are useful for comparison when selecting a high-power drive around the 690 VAC / Frame 9 range.

These are closely related configurations and provide a useful progression from approximately 650 A through 960 A.

The actual selection should be based on motor full-load current and required overload duty.

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26. Same-Series Comparison

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27. Five Other Popular Models from the Same Brand

For a broader comparison, the following models represent different capacity ranges and product families.

The smaller models in this table are not direct replacements for the 960 A unit.

They are included to show the range of drive sizes available within the same overall product portfolio.

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28. Comparison of High-Power Models

The 20G11BF960AN0NNNNN is the largest current-rated model among these three configurations.

It is therefore appropriate when the motor’s current requirement exceeds the practical range of the 765 A or 795 A configurations.

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29. When to Select the 960 A Version

The 960 A version becomes attractive when the motor’s actual current requirement is too close to the rating of a smaller drive.

For example, if the application has:

• A very large motor.
• High continuous loading.
• Significant starting torque.
• High process demand.
• Long operating periods.
• High ambient temperature.
• Significant overload requirements.

then additional current capacity may be desirable.

However, a larger drive is not automatically better.

Oversizing should be evaluated against:

• Motor current.
• Load type.
• Overload requirement.
• Speed range.
• Acceleration requirement.
• Deceleration requirement.
• Braking requirement.
• Installation cost.
• Physical space.
• Electrical infrastructure.

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30. Application Advantages in Conveyor Systems

For a large conveyor, the drive can provide controlled acceleration.

This is important because a conveyor carrying heavy material can have considerable mechanical inertia.

A sudden motor start can place significant stress on the mechanical system.

Variable-frequency operation can allow the system to increase speed gradually.

Potential benefits include:

• Reduced belt shock.
• Reduced gearbox stress.
• Smoother acceleration.
• Adjustable production speed.
• Improved coordination between conveyors.
• Better process control.
• Reduced mechanical impact.

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31. Application Advantages in Pump Systems

For pump applications, variable-speed operation can allow the process to operate closer to its actual demand.

Instead of continuously operating the motor at maximum speed, the drive can adjust speed according to the required operating point.

Potential advantages include:

• Adjustable flow.
• Adjustable pressure.
• Smooth starting.
• Reduced mechanical shock.
• Better process control.
• Potential energy savings.

The actual energy benefit depends heavily on the pump and piping system.

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32. Application Advantages in Fan Systems

For large fans and blowers, speed adjustment can provide direct control of airflow.

This can be useful in:

• Industrial ventilation.
• Furnace systems.
• Exhaust systems.
• Dust extraction.
• Combustion systems.
• Cooling systems.

The ability to adjust speed can make the system more flexible than a simple fixed-speed motor arrangement.

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33. Application Advantages in Mining

Mining equipment often requires large motors and continuous operation.

A high-current drive can provide controlled operation for equipment such as:

• Long conveyors.
• Material transfer systems.
• Large pumps.
• Ventilation systems.
• Processing equipment.

The large Frame 9 design is appropriate for applications where compact VFDs cannot provide sufficient current.

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34. Application Advantages in Heavy Manufacturing

In heavy manufacturing, process equipment can have large motors and demanding mechanical loads.

The drive can be used to control:

• Speed.
• Acceleration.
• Deceleration.
• Torque.
• Process throughput.

This can improve operating flexibility and reduce dependence on fixed-speed motor operation.

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35. Maintenance Recommendations

A high-power drive should have a structured maintenance program.

For large equipment, preventive maintenance is particularly important because unexpected downtime can have a significant production impact.

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36. Environmental Considerations

The drive should be installed in an environment appropriate for large industrial electronic equipment.

Particular attention should be paid to:

• Temperature.
• Humidity.
• Dust.
• Corrosive gases.
• Condensation.
• Airflow.
• Vibration.
• Electrical noise.

A clean, temperature-controlled electrical room is generally preferable to a harsh process environment.

If the drive must be installed near the production area, additional environmental protection may be necessary.

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37. Installation Considerations

The installation should be planned around both electrical and mechanical requirements.

Electrical Installation

The incoming power system must be compatible with the 690 VAC drive configuration.

Power cables, protection devices, grounding and motor connections should all be correctly sized.

Mechanical Installation

Because the equipment can weigh approximately 1246 kg, floor loading and lifting arrangements need to be considered.

Thermal Installation

The room must be capable of removing the heat generated by the drive.

Cable Installation

Large power cables require adequate bending radius and sufficient termination space.

Maintenance Access

Enough space should be reserved for technicians to inspect and service the equipment.

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38. Product Selection Checklist

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39. Overall Advantages at a Glance

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40. Final Product Summary

The 20G11BF960AN0NNNNN is a high-capacity PowerFlex 755 variable-frequency AC drive intended for very large industrial motor applications.

Its primary characteristics are the 690 VAC voltage class, 960 A current rating, Frame 9 construction and air-cooled configuration.

With a current capacity of approximately 960 A, it belongs to the high-power end of the PowerFlex 755 range and is suitable for equipment requiring substantial motor current.

Typical applications include large conveyors, mining equipment, large pumps, industrial fans, blowers, cement machinery, heavy material-handling systems and large process machines.

The drive’s variable-frequency operation provides the ability to control motor speed rather than simply switching the motor between stopped and full-speed operation.

This can provide smoother acceleration, more flexible process control and reduced mechanical stress.

The large current capacity is particularly useful in applications where motor loads are substantial and where the drive needs to operate reliably for long periods.

The approximate mechanical planning values are around 2450 mm high × 1200 mm wide × 800 mm deep, with a planning weight of approximately 1246 kg.

Because this is a very large industrial drive, the mechanical dimensions and weight are important engineering considerations. Transportation, floor loading, lifting, ventilation, cable routing and maintenance access should all be considered before installation.

The configuration also includes a filtered arrangement, common-mode capacitor jumper configuration, AC input with precharge and DC terminals, while dynamic braking is not included in the specified configuration.

The absence of dynamic braking should receive particular attention in applications involving large rotating inertia or rapid deceleration.

For users comparing nearby models, the 650 A, 710 A, 765 A and 795 A configurations provide lower-current alternatives within the same general high-power family.

The 960 A model becomes particularly attractive when the motor’s operating current approaches or exceeds the practical range of the lower-current models.

In practical terms, the 20G11BF960AN0NNNNN is best suited to applications where a combination of very high motor current, 690 VAC operation, variable-speed control, large industrial machinery capability and integration into an automated production system is required.