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20G11LD800JN2NNNNN — Detailed Product Information, Technical Parameters, Applications, Advantages and Related Models

1. Product Overview

The 20G11LD800JN2NNNNN is a high-power air-cooled AC drive designed for large industrial motor applications. It belongs to the PowerFlex 755 family and is configured as a large floor-standing packaged drive for three-phase 480 VAC systems.

This model is rated at 800 A output current, with power ratings of 800 HP for Light Duty, 700 HP for Normal Duty and 600 HP for Heavy Duty. It uses a Frame 9 construction, an 800 mm deep MCC-style Type 1 / IP20 enclosure, forced-air cooling, AC input with precharge and DC terminals, embedded Ethernet/IP, EMC filtering and an enhanced LCD full-numeric HIM. Dynamic braking is not included in this particular configuration.

The configuration is intended for demanding industrial equipment where a conventional motor starter is not sufficient and the process requires controlled motor speed, controlled acceleration, automation integration and detailed drive monitoring.

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2. Brand, Series and Product Classification

The exact model configuration identifies it as a PowerFlex 755 AC packaged drive with embedded Ethernet/IP, 800 A output, 480 VAC three-phase input, Frame 9 construction and an 800 mm-deep Type 1/IP20 MCC-style enclosure.

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3. Model Number Interpretation

The model number is:

20G11LD800JN2NNNNN

The catalog number contains a number of configuration identifiers. The complete suffix should be treated as a complete factory configuration rather than simply as an arbitrary sequence of letters and numbers.

For practical selection purposes, the most important characteristics represented by this model are:

• PowerFlex 755 family
• Air-cooled packaged construction
• 480 VAC class
• 800 A output
• Large Frame 9 configuration
• 800 mm-deep MCC-style cabinet
• Embedded Ethernet/IP
• AC input with precharge
• Filtered configuration
• CM jumper installed
• No dynamic braking
• Enhanced LCD full-numeric HIM

This is why two PowerFlex 755 drives that look similar externally can have different catalog numbers and different electrical or mechanical configurations.

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4. Main Technical Parameters

The core electrical and enclosure characteristics above are consistent with the specified catalog configuration.

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5. Electrical Capacity

The most important characteristic of this drive is its 800 A output rating.

This places the unit firmly in the large industrial-drive category.

The associated catalog duty ratings are:

The three duty ratings are important because the same motor-control system can have significantly different requirements depending on the application.

A lightly loaded centrifugal fan does not place the same demands on a drive as a heavily loaded conveyor that starts under load.

For that reason, selecting a drive solely according to motor horsepower is not always sufficient.

The following should also be checked:

• Motor full-load current
• Motor voltage
• Motor power
• Starting torque
• Overload requirements
• Acceleration time
• Deceleration time
• Load inertia
• Operating speed range
• Braking requirements
• Ambient temperature

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6. Light-Duty Rating

The Light-Duty rating is 800 HP.

This rating is particularly relevant to applications where the motor load is comparatively smooth and the overload requirements are less demanding.

Typical examples can include suitable:

• Fans
• Blowers
• Centrifugal pumps
• Ventilation systems
• Certain material-handling applications

The exact suitability depends on the motor and machine characteristics.

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7. Normal-Duty Rating

The Normal-Duty rating is 700 HP.

Normal-duty applications generally require more operating margin than a simple light-duty application.

This rating can be useful for larger process machines where the motor is exposed to moderate variations in load.

Examples may include:

• Large process pumps
• Conveyors
• Fans
• Blowers
• Material-handling equipment
• Industrial process machinery

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8. Heavy-Duty Rating

The Heavy-Duty rating is 600 HP.

This is particularly important for machinery with demanding torque requirements.

Potential applications include:

• Heavy conveyors
• Mining machinery
• Aggregate equipment
• High-inertia machinery
• Heavy material handling
• Machinery requiring substantial starting torque

A 600 HP motor operating under heavy-duty conditions should therefore be evaluated against the Heavy-Duty rating rather than the 800 HP Light-Duty number.

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9. Power Conversion Principle

The drive essentially operates through a controlled power-conversion process.

A simplified arrangement is:

480 VAC Three-Phase Supply

↓

Input / Precharge Section

↓

DC Bus

↓

Inverter Section

↓

Variable-Frequency AC Output

↓

Large Industrial Motor

The inverter regulates the electrical output supplied to the motor.

This allows the motor to operate at different speeds instead of being restricted to the fixed operating speed associated with direct connection to the supply.

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10. Variable-Speed Control

One of the main reasons to use a high-power AC drive is the ability to control motor speed.

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

This is valuable in:

• Pumping systems
• Ventilation
• Fans
• Conveyors
• Blowers
• Process equipment
• Material handling

Variable-speed operation can also improve process control.

For example, a pump may need different flow rates at different times. Adjusting motor speed can provide a more direct way of controlling the process than continuously running the motor at full speed and restricting the flow mechanically.

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11. Controlled Acceleration

Large motors can draw significant current and generate substantial mechanical stress during starting.

A controlled drive can gradually accelerate the motor.

This can help reduce mechanical shock on:

• Couplings
• Gearboxes
• Shafts
• Bearings
• Belts
• Conveyor structures
• Pump assemblies

For large conveyors and high-inertia machines, controlled acceleration can be particularly valuable.

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12. Controlled Deceleration

The drive can also control the motor’s deceleration.

This can make stopping more predictable and reduce sudden mechanical forces.

However, this model is specified with:

Dynamic Braking: None

Therefore, applications requiring rapid stopping or substantial regeneration should be reviewed carefully and the appropriate braking strategy should be engineered separately.

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13. Ethernet/IP Communication

The model includes embedded Ethernet/IP.

This makes it suitable for integration into an industrial automation network.

A typical architecture can be represented as:

Controller

↓

Ethernet/IP Network

↓

PowerFlex 755 Drive

↓

Motor

↓

Machine

The drive can therefore become part of a larger automated production system rather than functioning only as an independent motor controller.

Typical information exchanged in an automation system can include:

• Start command
• Stop command
• Speed reference
• Direction
• Drive status
• Fault status
• Alarm status
• Operating information
• Process-related control information

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14. Local Operator Interface

The specified configuration includes an enhanced LCD full-numeric HIM.

This is useful for local operation and maintenance.

During commissioning, technicians can use the local interface for activities such as:

• Parameter adjustment
• Drive setup
• Status checking
• Fault investigation
• Local control
• Diagnostic work
• Maintenance

For large floor-standing drives, convenient access to the operator interface can significantly simplify field work.

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15. Enclosure and Protection

The model uses a:

Type 1 / IP20 / 800 mm Deep MCC Style

configuration.

This means that the drive should be installed in an appropriately controlled industrial environment.

It should not be considered a weatherproof outdoor enclosure.

The installation should be protected from conditions such as:

• Direct water exposure
• Rain
• Water spray
• Condensation
• Excessive dust
• Conductive contamination
• Corrosive atmosphere

For harsh industrial environments, the electrical room or surrounding enclosure should be designed accordingly.

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16. Mechanical Dimensions

The specified packaged configuration has an 800 mm cabinet depth.

Because this is a large Frame 9 packaged drive, the physical installation requirements are substantially greater than those of a compact wall-mounted VFD.

It would be inappropriate to invent a single height, width or weight figure when the precise packaged mechanical arrangement has not been specified.

For installation planning, lifting, transportation and floor loading, the mechanical drawing for the actual unit should be used.

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17. Weight

The weight in kg is an important engineering parameter for this type of equipment.

However, the exact complete packaged-unit weight is configuration dependent.

The catalog information identifies the electrical and mechanical configuration but does not provide a universally applicable single net-weight value for every possible packaged arrangement.

Therefore:

This distinction is important because a large packaged drive can require specialized handling equipment.

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18. Cooling System

The drive uses forced-air cooling.

An 800 A drive can generate significant internal heat during operation.

The cooling system therefore needs to receive proper attention during installation and maintenance.

Important factors include:

• Airflow
• Fan condition
• Cabinet ventilation
• Ambient temperature
• Electrical-room temperature
• Air inlet cleanliness
• Air outlet clearance
• Dust accumulation

Blocked ventilation can increase internal temperatures and may lead to thermal protection or shortened component life.

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19. EMC Filtering

The specified model has a filtered EMC configuration with the CM jumper installed.

This is useful when electromagnetic compatibility is an important consideration.

Large variable-frequency drives use high-speed switching devices, so the complete installation needs to be considered from an EMC perspective.

Good installation practices include:

• Proper grounding
• Appropriate cable routing
• Correct motor cable selection
• Separation between control and power cables
• Proper shielding where applicable
• Correct termination practices
• Proper network cable installation

The EMC performance of the overall system depends not only on the drive but also on how the complete installation is designed.

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20. Input Configuration

The specified model uses an AC input with precharge and DC terminals configuration.

This needs to be considered when planning the power-distribution system.

Relevant design areas include:

• Incoming power
• Protection
• Precharge
• DC connections
• Cabinet wiring
• Power distribution
• Grounding

The actual electrical installation should follow the applicable engineering documentation for the configured unit.

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21. Dynamic Braking

This model is specified as:

Dynamic Braking: None

This is an important selection consideration.

Machines with high inertia may require a separate braking strategy.

Examples include:

• Large conveyors
• Rollers
• Centrifuges
• Winders
• Unwinders
• Large fans
• Heavy rotating machinery

If the process requires rapid stopping, the braking requirements should be calculated before selecting the final drive arrangement.

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22. Main Applications

Large Conveyor Systems

The drive is well suited to large conveyor applications.

Large conveyors can contain considerable mechanical inertia, especially when carrying heavy material over long distances.

Controlled speed and acceleration can help reduce stress on:

• Gearboxes
• Couplings
• Shafts
• Bearings
• Belts
• Pulleys

Potential applications include:

• Mining conveyors
• Quarry conveyors
• Cement conveyors
• Bulk-material conveyors
• Port material handling
• Aggregate conveyors

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Mining

Large mining systems often use high-power motors for:

• Ore conveyors
• Material transfer
• Dewatering pumps
• Ventilation fans
• Processing equipment
• Bulk-material handling

The 800 A capacity makes this class of drive appropriate for large motor systems.

The electrical equipment should normally be installed in a controlled electrical environment suitable for the surrounding mining conditions.

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Cement Plants

Potential cement-industry applications include:

• Raw-material conveyors
• Cement conveyors
• Large fans
• Blowers
• Pumps
• Dust extraction systems
• Process machinery

Variable-speed operation allows the motor to respond to changing production requirements.

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Aggregate and Quarry Equipment

Possible applications include:

• Conveyors
• Feeders
• Large screens
• Crushers
• Pumps
• Fans
• Material handling

The motor current and mechanical load should always be checked before final selection.

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Large Pumps

Large industrial pumps can benefit from variable-speed control.

Potential advantages include:

• Flow control
• Pressure control
• Smooth starting
• Reduced mechanical shock
• Reduced throttling requirements
• Better process control

The strongest energy-saving opportunities are often found in variable-flow centrifugal pumping systems.

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Fans and Blowers

Large industrial fans and blowers can also benefit from variable-speed operation.

Potential applications include:

• Mine ventilation
• Furnace ventilation
• Process exhaust
• Cooling systems
• Dust collection
• Combustion-air systems

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23. Product Advantages

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24. Comparison with a Conventional Motor Starter

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25. Five Same-Series or Closely Related Models

The following models are useful comparison candidates when selecting a large PowerFlex 755 drive. Exact suffixes should always be checked against the required electrical and mechanical configuration before substitution.

Important: The 20G11LD800JN2NNNNN is the confirmed model in this list. The other catalog numbers are presented as related selection examples, but their exact configuration should not be assumed to be interchangeable with the target model merely because the basic series and current range are similar.

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26. Five Related PowerFlex Models for Different Motor Sizes

These examples illustrate the major advantage of the PowerFlex 755 family: the same general product family can cover a very broad range of industrial motor sizes.

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27. Five Popular Models from the Same Brand

These five models cover different points within the product range, from compact drives to high-power floor-standing systems.

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28. Application Suitability

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29. Installation Considerations

A drive of this size requires considerably more planning than a compact VFD.

The following should be evaluated before installation:

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30. Maintenance Considerations

For a high-current industrial drive, preventive maintenance can be especially important.

Dust accumulation, poor ventilation and loose electrical connections can increase thermal stress and reduce reliability.

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31. Key Advantages for Industrial Users

The main strength of the 20G11LD800JN2NNNNN is not simply its horsepower rating.

Its value comes from combining high electrical capacity with industrial automation capabilities.

The drive can provide:

High Current Capacity

The 800 A output rating allows the drive to control very large motors.

Flexible Motor Speed

The motor can operate at different speeds according to the production requirement.

Controlled Starting

Acceleration can be controlled rather than applying the full operating condition immediately.

Process Integration

Embedded Ethernet/IP allows the drive to participate in an appropriate industrial automation network.

Local Maintenance

The enhanced LCD full-numeric HIM provides a convenient local interface.

Large Industrial Construction

The Frame 9 floor-standing package is intended for large installations.

EMC-Oriented Configuration

The filtered configuration and installed CM jumper are useful characteristics when EMC considerations are part of the system design.

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32. Product Advantages in Practical Terms

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33. Detailed Parameter Summary

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34. Selection Notes

When choosing this drive for a new machine, the first parameter to compare should normally be the motor’s actual rated current.

For example, if a motor is labeled as 600 HP, that does not automatically mean that every 600 HP-rated drive is equivalent.

The following should be matched:

Motor Voltage → Drive Voltage

Motor Current → Drive Current

Motor Duty → Drive Duty Rating

Starting Torque → Drive Torque Capability

Load Inertia → Acceleration / Deceleration Capability

Stopping Requirement → Braking Configuration

Control Architecture → Communication Capability

This approach provides a much more reliable selection process than using horsepower alone.

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35. Overall Evaluation

The 20G11LD800JN2NNNNN is a high-capacity industrial AC drive intended for large motor applications.

Its defining specifications are:

480 VAC

3 Phase

800 A

800 HP Light Duty

700 HP Normal Duty

600 HP Heavy Duty

Frame 9

Forced-Air Cooling

Type 1 / IP20

800 mm Deep MCC Style

Embedded Ethernet/IP

Filtered EMC Configuration

Enhanced LCD Full-Numeric HIM

No Dynamic Braking

The drive is particularly well suited to large conveyors, mining systems, cement plants, aggregate equipment, large pumps, fans, blowers and other heavy industrial machinery.

The biggest advantage is the combination of very high motor-control capacity and industrial automation functionality. The drive can handle the electrical requirements of large motors while also providing variable-speed operation and network-based control.

For mechanical installation, the 800 mm cabinet depth is a confirmed key dimension. The exact width, height and complete packaged weight in kg should be treated as configuration-dependent rather than estimated, especially when the equipment will be transported, lifted or installed on a raised floor.

For applications with significant inertia or rapid stopping requirements, the absence of integrated dynamic braking in this configuration deserves particular attention.

Overall, the 20G11LD800JN2NNNNN is best regarded as a large, floor-standing, high-current industrial drive for demanding motor-control applications where capacity, controlled speed, process integration and robust industrial construction are important.