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20G11LF1K0JN2NNNNN — Detailed Product Description, Technical Parameters, Applications and Related Models
1. Product Overview
The 20G11LF1K0JN2NNNNN is a high-power variable frequency AC drive designed for large three-phase industrial motors.
It belongs to the PowerFlex 755 product family and is intended for demanding applications where conventional motor starters are not sufficient and where precise speed control, controlled acceleration, process coordination and industrial automation are required.
This model is in the 690 VAC class and has a rated current of approximately 1040 A. Its very high current capacity places it in the large industrial drive category, making it suitable for major pumps, fans, blowers, conveyors, compressors, crushers, mixers and other heavy process machinery.
The drive is an air-cooled configuration with an MCC-style mechanical arrangement. The catalog configuration also incorporates input filtering and a common-mode jumper arrangement.
For large industrial installations, the combination of high voltage, high current and variable-speed control provides a practical solution for controlling motors in the several-hundred-kilowatt to megawatt class.
2. Brand and Product Series
| Item | Description |
|---|---|
| Brand | Allen-Bradley |
| Product Family | PowerFlex 750-Series |
| Product Series | PowerFlex 755 |
| Product Type | High-Power AC Variable Frequency Drive |
| Catalog Number | 20G11LF1K0JN2NNNNN |
| Voltage Class | 690 VAC |
| Current Rating | 1040 A |
| Cooling Method | Forced Air / Air Cooled |
| Installation Style | MCC Style |
| Enclosure Style | Type 1 / IP20 class |
| Input Type | AC input with precharge |
| DC Terminals | Included |
| Dynamic Braking | None |
| Filtering | Filtered configuration |
| CM Jumper | Installed |
| Communication | Embedded industrial Ethernet capability |
| Frame | High-power Frame 10 class |
The PowerFlex 755 series is intended for applications ranging from large individual machines to major continuous-process installations.
The series is particularly useful when the motor must operate at different speeds, accelerate smoothly, communicate with an automation controller, and provide operating and diagnostic information to the control system.
3. Main Technical Parameters
| Parameter | Specification |
|---|---|
| Model | 20G11LF1K0JN2NNNNN |
| Drive Family | PowerFlex 750-Series |
| Drive Series | PowerFlex 755 |
| Voltage Rating | 690 VAC |
| Input Phase | Three Phase |
| Current Rating | 1040 A |
| Light-Duty Rating | Approximately 1100 kW |
| Normal-Duty Rating | Approximately 1000 kW |
| Heavy-Duty Rating | Approximately 900 kW |
| Cooling | Forced Air |
| Input Configuration | AC Input with Precharge |
| DC Terminals | Included |
| Filtering | Filtered |
| CM Jumper | Installed |
| Dynamic Braking | None |
| Enclosure | Type 1 / IP20 class |
| Installation | MCC Style |
| Approximate Depth | 800 mm |
| Width | Configuration-dependent |
| Height | Configuration-dependent |
| Weight (kg) | Configuration-dependent |
| Motor Type | Three-Phase AC Motor |
| Application Class | High-Power Industrial |
| Communication | Embedded Industrial Ethernet capability |
4. Electrical Rating
The most important electrical specification of the 20G11LF1K0JN2NNNNN is its 1040 A current class.
A 1040 A drive is intended for very large industrial motors and represents a substantially higher power category than compact or medium-size variable frequency drives.
The nominal voltage class is 690 VAC.
The combination of 690 VAC and 1040 A provides the electrical capacity needed for large industrial motor installations.
The principal duty ratings can be summarized as follows.
| Duty Classification | Approximate Motor Power |
|---|---|
| Light Duty | 1100 kW |
| Normal Duty | 1000 kW |
| Heavy Duty | 900 kW |
| Current Rating | 1040 A |
| Voltage | 690 VAC |
| Phase | Three Phase |
The actual allowable motor rating should always be selected according to motor nameplate current, operating duty, ambient conditions, overload requirements and the characteristics of the driven machine.
5. Light-Duty Rating
The approximate Light-Duty rating is 1100 kW.
This rating is useful for applications where the motor normally operates with a relatively predictable load and does not continuously experience severe overload conditions.
Typical examples include large centrifugal pumps, large fans and blowers.
For these applications, the drive can regulate the motor speed according to process demand instead of keeping the motor permanently at maximum speed.
This can provide better process control and, depending on the load characteristics, significant energy-saving opportunities.
6. Normal-Duty Rating
The approximate Normal-Duty rating is 1000 kW.
Normal-Duty applications generally have a more moderate overload requirement than heavy-duty machinery.
Examples can include:
- Large industrial pumps
- Large fans
- Large blowers
- Material-handling equipment
- Industrial conveyors
- Process machinery
- Large rotating equipment
The actual selection should be based on continuous current and overload requirements rather than motor horsepower or kilowatt value alone.
7. Heavy-Duty Rating
The approximate Heavy-Duty rating is 900 kW.
Heavy-Duty operation is relevant to machinery that may require greater torque during acceleration or experience frequent changes in loading.
Potential examples include:
- Crushers
- Heavy conveyors
- Mining equipment
- Large mixers
- High-inertia machines
- Mineral-processing equipment
- Heavy material-handling machinery
When selecting a drive for such equipment, acceleration time, inertia, torque requirements and overload duration are particularly important.
8. Physical Dimensions
The model is associated with an 800 mm deep MCC-style configuration.
At this power level, the overall mechanical arrangement can vary according to the final equipment configuration.
Therefore, the safest technical presentation is to distinguish the known basic depth from the final assembled dimensions.
| Mechanical Parameter | Specification |
|---|---|
| Frame | High-Power Frame 10 class |
| Installation Style | MCC Style |
| Depth | 800 mm |
| Width | Configuration-dependent |
| Height | Configuration-dependent |
| Enclosure | Type 1 / IP20 class |
| Cooling | Forced Air |
| Mounting | Industrial / MCC installation |
| Cable Entry | Configuration-dependent |
| Service Clearance | Installation-dependent |
| Overall Footprint | Configuration-dependent |
| Weight (kg) | Configuration-dependent |
The 800 mm depth should be considered when designing the electrical room, MCC lineup, cabinet arrangement and cable routing system.
9. Weight
The complete weight of a high-power drive assembly can vary depending on the final mechanical configuration.
For that reason, a single kilogram value should not be treated as universally applicable to every physical assembly associated with the catalog configuration.
| Weight Item | Value |
|---|---|
| Drive Configuration | High-Power PowerFlex 755 |
| Weight (kg) | Configuration-dependent |
| Shipping Weight | Configuration-dependent |
| Cabinet / MCC Assembly Weight | Configuration-dependent |
| Auxiliary Equipment Weight | Configuration-dependent |
| Final Lifting Weight | Must be confirmed from the actual equipment configuration |
For transportation, lifting, foundation design and installation work, the actual equipment documentation and nameplate information should be used.
This is especially important for a drive in the 1000 kW class because the final assembly can be a substantial industrial electrical installation.
10. Input Configuration
The model uses an AC input arrangement with precharge.
The precharge function is important in high-power electronic equipment because it helps manage the initial charging of the DC-link capacitors.
This becomes especially significant when the drive is connected to a large industrial power system.
The configuration also includes DC terminals.
The basic electrical arrangement can be represented as:
Three-Phase AC Supply
↓
Input / Precharge Section
↓
Rectification and DC Link
↓
Inverter Power Section
↓
Variable-Frequency AC Output
↓
Large Three-Phase Motor
The inverter section controls the frequency and voltage delivered to the motor.
11. Filtering Configuration
The JN2 configuration is associated with a filtered arrangement and common-mode jumper installation.
Filtering is important in large variable frequency drive systems because power electronic switching can produce electrical noise and high-frequency components.
A properly configured filtering arrangement can help the installation meet its intended electrical compatibility requirements.
The final installation should still be evaluated according to the complete motor-drive-cable system, grounding arrangement and site electrical environment.
12. Product Introduction
The 20G11LF1K0JN2NNNNN is designed for large industrial motor control.
Instead of operating a large motor only in an ON/OFF manner, the drive allows the motor to operate at controlled speeds.
For many industrial processes, this provides a more flexible method of controlling production equipment.
For example, a large pump may not need to operate at full speed all the time.
A conveyor may need different speeds during different production stages.
A fan may need to respond to changing airflow requirements.
A compressor may need to follow process demand.
A mixer may need a controlled acceleration profile.
The drive provides the electrical interface between the industrial power supply and the motor, while also providing control and monitoring functions.
13. Main Product Advantages
13.1 Very High Current Capacity
The 1040 A current rating is one of the defining characteristics of this product.
It allows the drive to be used with very large motors that are far beyond the practical range of compact variable frequency drives.
13.2 High Power Capability
The drive provides approximately 1100 kW Light-Duty capability.
This places it firmly within the high-power industrial category.
It can therefore be considered for large rotating equipment used in continuous production environments.
13.3 690 VAC Class
The 690 VAC voltage class is useful for large industrial motors.
At a given power level, increasing motor voltage can reduce the current required by the motor compared with a lower-voltage system.
This can be beneficial when designing large motor feeders, switchgear and distribution systems.
13.4 Adjustable Motor Speed
The drive provides variable-speed operation.
This is useful when the process does not require constant motor speed.
Speed adjustment can improve process control and can potentially reduce energy consumption in suitable variable-torque applications.
13.5 Controlled Acceleration
Large motors and large mechanical systems can have considerable inertia.
Direct starting can produce substantial electrical and mechanical stress.
A variable frequency drive allows the acceleration process to be controlled.
This can reduce sudden mechanical loading on:
- Shafts
- Couplings
- Gearboxes
- Bearings
- Belts
- Conveyor structures
- Pump systems
- Fan systems
13.6 Better Process Control
The drive can be integrated into an industrial control architecture.
The motor can therefore respond to process commands rather than simply operating at a fixed speed.
This is useful for production systems where operating speed changes according to:
- Flow
- Pressure
- Material quantity
- Production rate
- Temperature
- Air volume
- Conveyor throughput
- Process demand
13.7 Industrial Network Integration
The PowerFlex 755 platform supports industrial network integration.
This allows drive information to be exchanged with a controller or supervisory system.
Typical information can include:
| Information | Typical Function |
|---|---|
| Start Command | Start motor |
| Stop Command | Stop motor |
| Speed Reference | Set motor speed |
| Actual Speed | Monitor motor speed |
| Output Frequency | Monitor drive operation |
| Current | Monitor motor loading |
| Status | Determine drive state |
| Warning | Identify abnormal conditions |
| Fault | Identify trip condition |
| Diagnostic Data | Troubleshooting and maintenance |
14. Pump Applications
Large pumps are one of the most suitable application areas for high-power variable frequency drives.
The drive can adjust motor speed according to the required flow or pressure.
Typical applications include:
- Industrial water systems
- Cooling-water systems
- Process-water systems
- Wastewater systems
- Mining dewatering
- Large circulation pumps
- Industrial pumping stations
- Process pumps
15. Fan and Blower Applications
Large fans and blowers frequently operate under changing process conditions.
A drive allows the motor speed to be adjusted rather than running continuously at maximum speed.
Potential applications include:
- Industrial ventilation
- Furnace ventilation
- Exhaust systems
- Dust collection
- Mining ventilation
- Cooling systems
- Process-air systems
- Large air-handling systems
For variable-torque fan applications, speed control can provide significant operating flexibility.
16. Conveyor Applications
Large conveyors can have considerable mechanical inertia.
A controlled acceleration profile is therefore valuable.
The drive can gradually bring the conveyor motor up to operating speed.
This can help reduce sudden loading on mechanical components.
Potential applications include:
- Mining conveyors
- Ore conveyors
- Aggregate conveyors
- Cement conveyors
- Bulk-material conveyors
- Long-distance conveyors
- Heavy-duty material-handling systems
17. Mining Applications
The high-current capability of the 20G11LF1K0JN2NNNNN makes it suitable for consideration in large mining installations.
Potential applications include:
- Ore conveyors
- Crushing systems
- Large dewatering pumps
- Mine ventilation fans
- Material-handling equipment
- Mineral-processing machinery
- Bulk-material systems
Mining environments can be demanding, so enclosure selection, cooling, dust control, cable routing and maintenance access should be evaluated carefully.
18. Crusher Applications
Crushing equipment can experience rapidly changing mechanical loads.
When hard material enters a crusher, motor torque requirements can increase significantly.
A high-power drive can provide controlled motor operation and can be integrated with the machine’s control system.
Potential applications include:
- Primary crushers
- Secondary crushers
- Aggregate crushers
- Mineral-processing crushers
- Cement-processing equipment
- Bulk-material processing systems
19. Compressor Applications
Large compressors can require substantial motor power.
A variable frequency drive can allow compressor speed to follow process demand.
Potential applications include:
- Industrial compressors
- Process compressors
- Large air compressors
- Gas-processing equipment
- Industrial production systems
- Process plants
Compressor applications should be evaluated carefully because some compressor designs have specific minimum-speed, torque and operating-range requirements.
20. Mixer Applications
Large mixers can require high starting torque, particularly when the mixing chamber is already loaded with material.
A controlled acceleration profile can be useful in these applications.
Potential applications include:
- Chemical processing
- Mineral processing
- Cement production
- Industrial mixing
- Bulk-material processing
- Process manufacturing
The motor and drive should be sized according to the actual torque curve rather than only the nominal motor power.
21. Typical Industrial Applications
| Industry | Possible Application |
|---|---|
| Mining | Conveyors, crushers, pumps, fans |
| Cement | Crushers, conveyors, fans |
| Water | Large pumps |
| Wastewater | Pumping systems |
| Chemical Processing | Pumps, mixers, blowers |
| Metals | Fans, pumps, conveyors |
| Pulp and Paper | Pumps, fans, process machinery |
| Power Generation | Large auxiliary motors |
| Aggregate Processing | Crushers and conveyors |
| General Manufacturing | Large process motors |
22. Energy-Saving Potential
One of the major reasons for using a variable frequency drive is the ability to match motor speed to process demand.
This is particularly valuable for centrifugal pumps and fans.
A motor running continuously at full speed may consume substantially more energy than necessary when the process only requires partial capacity.
With appropriate speed control, the motor can operate closer to the actual process requirement.
The actual energy savings depend on the machine characteristics, operating schedule, motor efficiency and process requirements.
| Factor | Influence on Energy Consumption |
|---|---|
| Motor Speed | Major influence |
| Load Profile | Major influence |
| Operating Hours | Major influence |
| Pump / Fan Curve | Major influence |
| Motor Efficiency | Important |
| Mechanical Efficiency | Important |
| Process Control Strategy | Important |
23. Maintenance and Diagnostics
High-power drives are important pieces of production equipment.
Unexpected drive faults can result in significant production downtime.
The PowerFlex 755 platform provides operating and diagnostic information that can assist maintenance personnel.
Typical information may include:
- Drive status
- Motor current
- Operating frequency
- Speed
- Warnings
- Fault conditions
- Communication status
- Operating parameters
- Control information
This can help maintenance personnel determine whether a problem is related to the drive, motor, mechanical load or control system.
24. Installation Considerations
A drive of this size requires careful engineering before installation.
The following parameters should be checked.
| Installation Parameter | Requirement |
|---|---|
| Supply Voltage | Confirm 690 VAC system |
| Supply Frequency | Confirm site frequency |
| Motor Voltage | Confirm motor nameplate |
| Motor Current | Confirm motor full-load current |
| Motor Power | Confirm required duty |
| Load Type | Variable torque / constant torque |
| Overload | Confirm required overload profile |
| Acceleration Time | Determine required value |
| Deceleration Time | Determine required value |
| Braking | Determine whether external braking is needed |
| Cooling | Confirm adequate ventilation |
| Ambient Temperature | Confirm operating environment |
| Dust | Evaluate environmental contamination |
| Cable Length | Evaluate motor cable installation |
| Grounding | Provide appropriate grounding |
| Cabinet Depth | Allow for approximately 800 mm depth |
| Cabinet Width | Confirm final configuration |
| Cabinet Height | Confirm final configuration |
| Weight (kg) | Confirm final assembly weight |
25. Cooling Requirements
Because the drive operates at very high power, thermal management is an important part of the installation.
The air-cooling system needs adequate airflow.
The installation should avoid situations where hot exhaust air is recirculated into the drive’s air inlet.
Important considerations include:
- Airflow
- Ambient temperature
- Ventilation
- Fan operation
- Cabinet arrangement
- Dust accumulation
- Service access
- Cooling-system maintenance
A clean and properly ventilated electrical environment is especially important for large air-cooled drives.
26. Mechanical Installation
The 800 mm depth should be included in mechanical layout planning.
Additional space may be necessary for:
- Power cables
- Control cables
- Network cables
- Cable bending radius
- Ventilation
- Maintenance
- Component replacement
- Safe working access
The exact overall width and height should be confirmed against the final mechanical arrangement before cabinet fabrication.
27. Motor Selection
The motor should not be selected based only on horsepower or kilowatt rating.
The following information should be considered:
| Motor Parameter | Importance |
|---|---|
| Rated Voltage | Must match drive system |
| Full-Load Current | Primary sizing parameter |
| Rated Frequency | Required for motor control |
| Rated Speed | Determines operating range |
| Power | Determines approximate capacity |
| Power Factor | Important for electrical loading |
| Efficiency | Important for energy use |
| Starting Torque | Important for acceleration |
| Overload Requirement | Important for drive selection |
| Motor Insulation | Important for inverter operation |
| Cable Length | Important for output waveform considerations |
28. Five Same-Series or Closely Related Models
The following models are useful for comparison when selecting another high-power configuration within the same general PowerFlex 755 family.
The models should be treated as comparison candidates rather than automatic drop-in replacements because the exact catalog suffix can change electrical filtering, enclosure, input and option configurations.
| Model | Series | Voltage | Current Class | Power Class | Depth | Weight (kg) |
|---|---|---|---|---|---|---|
| 20G11LF960JN2NNNNN | PowerFlex 755 | 690 VAC | 960 A | High Power | 800 mm class | Configuration-dependent |
| 20G11LF1K0JN0NNNNN | PowerFlex 755 | 690 VAC | 1040 A | 1100 kW LD / 1000 kW ND / 900 kW HD | 800 mm | Configuration-dependent |
| 20G11LF1K0JN4NNNNN | PowerFlex 755 | 690 VAC | 1040 A | High Power | 800 mm class | Configuration-dependent |
| 20G11LF1K4JN2NNNNN | PowerFlex 755 | 690 VAC | 1400 A | 1400 kW ND class | 800 mm | Configuration-dependent |
| 20G11LF1K5JN2NNNNN | PowerFlex 755 | 690 VAC | 1480 A class | Very High Power | 800 mm class | Configuration-dependent |
29. Related Model: 20G11LF960JN2NNNNN
The 20G11LF960JN2NNNNN represents a lower-current configuration within the same high-power family.
It can be considered when the actual motor current requirement is below the 1040 A level.
| Parameter | 20G11LF960JN2NNNNN |
|---|---|
| Product Family | PowerFlex 750-Series |
| Series | PowerFlex 755 |
| Voltage | 690 VAC |
| Current | 960 A class |
| Input | AC Input with Precharge |
| Cooling | Air Cooled |
| Installation | MCC Style |
| Depth | 800 mm class |
| Width | Configuration-dependent |
| Height | Configuration-dependent |
| Weight (kg) | Configuration-dependent |
| Typical Applications | Pumps, Fans, Conveyors, Process Equipment |
| Application Level | High Power |
This model is useful when a project requires similar functionality but does not need the complete 1040 A capacity.
30. Related Model: 20G11LF1K0JN0NNNNN
The 20G11LF1K0JN0NNNNN is extremely close to the requested configuration.
The principal electrical capacity remains in the 1040 A, 690 VAC class.
The suffix configuration differs, so it should not be treated as identical without checking the actual option requirements.
| Parameter | 20G11LF1K0JN0NNNNN |
|---|---|
| Series | PowerFlex 755 |
| Voltage | 690 VAC |
| Current | 1040 A |
| Light Duty | 1100 kW |
| Normal Duty | 1000 kW |
| Heavy Duty | 900 kW |
| Cooling | Air Cooled |
| Input | AC Input with Precharge |
| Dynamic Braking | None |
| Installation | MCC Style |
| Depth | 800 mm |
| Width | Configuration-dependent |
| Height | Configuration-dependent |
| Weight (kg) | Configuration-dependent |
| Communication | Embedded Industrial Ethernet capability |
31. Related Model: 20G11LF1K0JN4NNNNN
The 20G11LF1K0JN4NNNNN is another configuration in the same general high-power product group.
It retains the important 690 VAC / 1040 A class while using a different catalog option configuration.
| Parameter | 20G11LF1K0JN4NNNNN |
|---|---|
| Series | PowerFlex 755 |
| Voltage | 690 VAC |
| Current | 1040 A |
| Light Duty | Approximately 1100 kW |
| Normal Duty | Approximately 1000 kW |
| Heavy Duty | Approximately 900 kW |
| Cooling | Air Cooled |
| Input | AC Input with Precharge |
| Installation | MCC Style |
| Depth | 800 mm class |
| Width | Configuration-dependent |
| Height | Configuration-dependent |
| Weight (kg) | Configuration-dependent |
| Application | Large Industrial Motors |
32. Related Model: 20G11LF1K4JN2NNNNN
The 20G11LF1K4JN2NNNNN moves to a higher current class.
It is intended for applications where the motor current requirement exceeds the practical range of the 1040 A configuration.
| Parameter | 20G11LF1K4JN2NNNNN |
|---|---|
| Series | PowerFlex 755 |
| Voltage | 690 VAC |
| Current | 1400 A |
| Normal-Duty Power Class | Approximately 1400 kW |
| Heavy-Duty Power Class | Approximately 1120 kW |
| Cooling | Air Cooled |
| Input | AC Input with Precharge |
| Installation | MCC Style |
| Depth | 800 mm |
| Width | Configuration-dependent |
| Height | Configuration-dependent |
| Weight (kg) | Configuration-dependent |
| Typical Application | Very Large Industrial Motors |
33. Related Model: 20G11LF1K5JN2NNNNN
The 20G11LF1K5JN2NNNNN is another high-current configuration intended for very large motor applications.
It can be considered when a project requires a current capacity above the 1040 A class.
| Parameter | 20G11LF1K5JN2NNNNN |
|---|---|
| Series | PowerFlex 755 |
| Voltage | 690 VAC |
| Current | Approximately 1480 A class |
| Product Type | High-Power AC Drive |
| Cooling | Air Cooled |
| Installation | MCC Style |
| Depth | 800 mm class |
| Width | Configuration-dependent |
| Height | Configuration-dependent |
| Weight (kg) | Configuration-dependent |
| Application | Very Large Industrial Motors |
| Typical Loads | Large Pumps, Fans, Conveyors, Process Machines |
34. Five Popular Models from the Same Brand
For a broader comparison, the following models represent other commonly used drive sizes and product families.
They cover substantially smaller motor applications than the requested 1040 A drive and are therefore not direct replacements.
| Model | Series | Voltage Class | Current / Size Class | Typical Application | Dimensions | Weight (kg) |
|---|---|---|---|---|---|---|
| 25B-D010N104 | PowerFlex 525 | 480 VAC class | 10 A class | Small machinery | Compact, frame-dependent | Configuration-dependent |
| 25B-D017N104 | PowerFlex 525 | 480 VAC class | 17 A class | Small / medium machinery | Compact, frame-dependent | Configuration-dependent |
| 25B-D027N114 | PowerFlex 525 | 480 VAC class | 27 A class | Medium machinery | Compact, frame-dependent | Configuration-dependent |
| 20F11ND077AA0NNNNN | PowerFlex 753 | 480 VAC class | 77 A class | Medium / large machinery | Frame-dependent | Configuration-dependent |
| 20G11LF1K0AN2NNNNN | PowerFlex 755 | 690 VAC | 1040 A | Very large machinery | 800 mm class | Configuration-dependent |
35. 25B-D010N104
The 25B-D010N104 is a compact variable frequency drive designed for much smaller industrial motors.
It is useful for applications where the large 1040 A capacity of the 20G11LF1K0JN2NNNNN would be unnecessary.
| Parameter | 25B-D010N104 |
|---|---|
| Series | PowerFlex 525 |
| Voltage Class | 480 VAC class |
| Current Class | 10 A class |
| Product Type | Compact AC Drive |
| Typical Application | Small Machinery |
| Cooling | Configuration-dependent |
| Dimensions | Compact / frame-dependent |
| Weight (kg) | Configuration-dependent |
| Typical Loads | Small Pumps, Fans, Conveyors |
| Application Level | Small Industrial Machinery |
36. 25B-D017N104
The 25B-D017N104 is a larger configuration within the compact PowerFlex 525 family.
It can be used for small and medium industrial equipment.
| Parameter | 25B-D017N104 |
|---|---|
| Series | PowerFlex 525 |
| Voltage Class | 480 VAC class |
| Current Class | 17 A class |
| Product Type | Compact AC Drive |
| Typical Application | Small / Medium Machinery |
| Cooling | Configuration-dependent |
| Dimensions | Compact / frame-dependent |
| Weight (kg) | Configuration-dependent |
| Communication | Industrial Communication Capability |
| Typical Loads | Pumps, Fans, Conveyors, Small Process Machines |
37. 25B-D027N114
The 25B-D027N114 provides a higher current level within the compact drive family.
It is suitable for medium-sized industrial machines where the motor power is significantly below the megawatt range.
| Parameter | 25B-D027N114 |
|---|---|
| Series | PowerFlex 525 |
| Voltage Class | 480 VAC class |
| Current Class | 27 A class |
| Product Type | Compact AC Drive |
| Typical Application | Medium Industrial Machinery |
| Dimensions | Compact / frame-dependent |
| Weight (kg) | Configuration-dependent |
| Cooling | Configuration-dependent |
| Typical Loads | Pumps, Fans, Conveyors, Process Equipment |
38. 20F11ND077AA0NNNNN
The 20F11ND077AA0NNNNN belongs to the PowerFlex 753 family.
This series sits between compact drives and the very-high-power PowerFlex 755 configurations.
It is useful for medium and larger industrial motor applications.
| Parameter | 20F11ND077AA0NNNNN |
|---|---|
| Series | PowerFlex 753 |
| Voltage Class | 480 VAC class |
| Current Class | 77 A class |
| Product Type | Industrial AC Drive |
| Typical Application | Medium / Large Machinery |
| Cooling | Air Cooled / Configuration-dependent |
| Dimensions | Frame-dependent |
| Weight (kg) | Frame-dependent |
| Typical Loads | Pumps, Fans, Conveyors, Process Machinery |
| Application Level | Medium / Large Industrial |
39. 20G11LF1K0AN2NNNNN
The 20G11LF1K0AN2NNNNN is another high-power PowerFlex 755 configuration in the 690 VAC and 1040 A class.
It is particularly useful as a comparison when evaluating catalog-number options around the same motor capacity.
| Parameter | 20G11LF1K0AN2NNNNN |
|---|---|
| Series | PowerFlex 755 |
| Voltage | 690 VAC |
| Current | 1040 A |
| Light-Duty Power | Approximately 1100 kW |
| Normal-Duty Power | Approximately 1000 kW |
| Heavy-Duty Power | Approximately 900 kW |
| Cooling | Air Cooled |
| Input | AC Input with Precharge |
| Installation | MCC Style |
| Depth | 800 mm class |
| Width | Configuration-dependent |
| Height | Configuration-dependent |
| Weight (kg) | Configuration-dependent |
| Application | Very Large Industrial Motor Systems |
40. Comparison of the Main High-Power Models
| Parameter | 20G11LF960JN2NNNNN | 20G11LF1K0JN0NNNNN | 20G11LF1K0JN2NNNNN | 20G11LF1K4JN2NNNNN | 20G11LF1K5JN2NNNNN |
|---|---|---|---|---|---|
| Series | PowerFlex 755 | PowerFlex 755 | PowerFlex 755 | PowerFlex 755 | PowerFlex 755 |
| Voltage | 690 VAC | 690 VAC | 690 VAC | 690 VAC | 690 VAC |
| Current | 960 A class | 1040 A | 1040 A | 1400 A | 1480 A class |
| Light-Duty Class | High Power | 1100 kW | 1100 kW | High Power | High Power |
| Normal-Duty Class | High Power | 1000 kW | 1000 kW | 1400 kW | High Power |
| Heavy-Duty Class | High Power | 900 kW | 900 kW | 1120 kW | High Power |
| Cooling | Air Cooled | Air Cooled | Air Cooled | Air Cooled | Air Cooled |
| Installation | MCC Style | MCC Style | MCC Style | MCC Style | MCC Style |
| Depth | 800 mm class | 800 mm | 800 mm | 800 mm | 800 mm class |
| Width | Configuration-dependent | Configuration-dependent | Configuration-dependent | Configuration-dependent | Configuration-dependent |
| Height | Configuration-dependent | Configuration-dependent | Configuration-dependent | Configuration-dependent | Configuration-dependent |
| Weight (kg) | Configuration-dependent | Configuration-dependent | Configuration-dependent | Configuration-dependent | Configuration-dependent |
41. Application Comparison
| Application | Suitable Drive Category |
|---|---|
| Small Pump | Compact drive |
| Small Fan | Compact drive |
| Small Conveyor | Compact drive |
| Medium Pump | Medium industrial drive |
| Medium Fan | Medium industrial drive |
| Large Pump | PowerFlex 755 |
| Large Fan | PowerFlex 755 |
| Large Blower | PowerFlex 755 |
| Large Conveyor | PowerFlex 755 |
| Large Crusher | High-Power PowerFlex 755 |
| Mining Conveyor | High-Power PowerFlex 755 |
| Large Compressor | High-Power PowerFlex 755 |
| Large Mixer | High-Power PowerFlex 755 |
| Very Large Process Motor | High-Power PowerFlex 755 |
42. Advantages for Large Industrial Systems
The 20G11LF1K0JN2NNNNN is particularly attractive when a project requires high motor capacity without sacrificing the control capabilities expected from a modern industrial drive.
The major advantages include:
High Current Capability
The 1040 A rating allows the drive to serve large motors.
High Power Capability
The approximately 1100 kW Light-Duty rating makes the product suitable for major industrial machines.
690 VAC Compatibility
The higher voltage class is appropriate for large industrial motor systems.
Variable-Speed Operation
The motor can operate according to process requirements rather than simply running continuously at full speed.
Smooth Starting
Controlled acceleration can reduce mechanical shock.
Industrial Automation
The drive can participate in a larger control architecture.
Diagnostic Capability
Operating information can help maintenance personnel troubleshoot the system.
Flexible Application Range
The drive can be applied to pumps, fans, conveyors, blowers and many other large machines.
43. Important Engineering Considerations
Although the drive has a very high electrical rating, selecting a drive should always be based on the actual machine.
The following information should be available before final selection:
- Motor rated voltage.
- Motor rated current.
- Motor rated power.
- Motor frequency.
- Motor speed.
- Motor overload requirements.
- Required acceleration time.
- Required deceleration time.
- Load inertia.
- Load torque curve.
- Required operating speed range.
- Ambient temperature.
- Installation altitude.
- Electrical supply characteristics.
- Motor cable length.
- Grounding arrangement.
- Required communication network.
- Required braking method.
- Cabinet arrangement.
- Available cooling capacity.
A large drive should never be selected simply by matching the motor’s nominal kW value.
The motor current and application duty are equally important.
44. Selection Guide
If the motor requires approximately 900 to 1000 kW under normal operating conditions and its current requirement is within the 1040 A class, the 20G11LF1K0JN2NNNNN is a logical high-power configuration to evaluate.
If the required current is substantially lower, a smaller 690 VAC configuration may provide a more economical solution.
If the motor requires significantly more than 1040 A, a higher-current PowerFlex 755 configuration should be considered.
If the motor is only a few tens of kilowatts, a compact drive is generally much more appropriate.
The following simplified selection table illustrates this concept.
| Motor Application | Recommended Drive Class |
|---|---|
| Up to Small Motor Range | Compact Drive |
| Medium Motor | Medium Industrial Drive |
| Large Motor | PowerFlex 753 / PowerFlex 755 |
| 500–1000 kW Class | PowerFlex 755 |
| Around 1000 kW | 20G11LF1K0JN2NNNNN |
| Above 1000 kW | Higher-current PowerFlex 755 Configuration |
| Very High-Power Motor | High-Power PowerFlex 755 |
45. Product Positioning
The 20G11LF1K0JN2NNNNN occupies the high-power end of the PowerFlex 755 range.
It is not intended to compete with small machine drives on physical size or low installation cost.
Instead, its value is in controlling very large motors reliably and providing a scalable control platform for industrial processes.
Its strongest application areas are therefore installations where motor power, process control and system integration are more important than minimizing the size of the drive.
46. Key Specification Summary
| Specification | 20G11LF1K0JN2NNNNN |
|---|---|
| Brand | Allen-Bradley |
| Series | PowerFlex 755 |
| Family | PowerFlex 750-Series |
| Product Type | High-Power AC Variable Frequency Drive |
| Voltage | 690 VAC |
| Phase | Three Phase |
| Current | 1040 A |
| Light Duty | 1100 kW |
| Normal Duty | 1000 kW |
| Heavy Duty | 900 kW |
| Cooling | Air Cooled |
| Input | AC Input with Precharge |
| DC Terminals | Included |
| Filtering | Filtered |
| CM Jumper | Installed |
| Dynamic Braking | None |
| Installation | MCC Style |
| Enclosure | Type 1 / IP20 class |
| Depth | 800 mm |
| Width | Configuration-dependent |
| Height | Configuration-dependent |
| Weight (kg) | Configuration-dependent |
| Communication | Embedded Industrial Ethernet Capability |
| Typical Motor | Large Three-Phase AC Motor |
| Typical Industries | Mining, Cement, Water, Metals, Chemical, Pulp & Paper, General Process Industry |
47. Final Product Assessment
The 20G11LF1K0JN2NNNNN is a very-high-power AC variable frequency drive intended for large industrial motor applications.
Its 690 VAC voltage class, 1040 A current rating and approximately 1100 kW Light-Duty / 1000 kW Normal-Duty / 900 kW Heavy-Duty capability make it suitable for demanding industrial equipment.
The product is especially well suited to applications in which the motor needs to operate at different speeds instead of simply running continuously at a fixed speed.
Large pumps, fans, blowers, conveyors, crushers, compressors and process machines can all benefit from variable-speed control when the motor and load characteristics are appropriate.
The air-cooled design and MCC-style mechanical construction are intended for large industrial installations.
The approximately 800 mm depth should be considered during electrical-room and cabinet planning.
Because the final mechanical configuration can affect the overall width, height and total mass, the weight in kg should be confirmed from the actual configured assembly before transportation, lifting or structural calculations.
From a system-design perspective, the greatest strengths of the 20G11LF1K0JN2NNNNN are its very high current capacity, high-power capability, 690 VAC operation, variable-speed control, controlled acceleration, industrial communication capability and suitability for large continuous-process equipment.
For a project with a large 690 VAC motor around the 1000 kW class, this model represents a high-capacity drive configuration intended for serious industrial service.