Company Information
E-mail		[email protected]
Mobile		+8615980777398
Whatsapp		+8615980777398
WeChat		15980777398

20G11LC1K4AN0NNNNN — Detailed Product Description, Technical Parameters, Applications, Advantages and Related Models

1. Product Overview

Model: 20G11LC1K4AN0NNNNN

Brand: Allen-Bradley

Series: PowerFlex 755

Product Family: PowerFlex 750 Series

Product Type: High-power air-cooled AC packaged variable frequency drive

The 20G11LC1K4AN0NNNNN is a high-power variable frequency drive designed for large three-phase AC motor applications. It belongs to the PowerFlex 755 family and is intended for industrial equipment that requires high motor current, adjustable speed, controlled acceleration and integration with an automation network.

This configuration is a 400 VAC, three-phase drive with a rated output current of 1465 A. Its power ratings are 850 kW for light-duty operation, 800 kW for normal-duty operation and 630 kW for heavy-duty operation.

The drive uses an air-cooled Frame 9 construction, with an 800 mm deep MCC-style enclosure, Type 1 / IP20 protection, embedded EtherNet/IP communication, AC input with precharge and DC terminals, and an EMC filter configuration.

One important point about the exact model suffix is that 20G11LC1K4AN0NNNNN is the A-option configuration. In this configuration, the common-mode capacitor jumper is removed and the HIM selection is blank, meaning there is no factory-installed local HIM in this particular configuration.

---

2. Basic Product Information

---

3. Product Series

The 20G11LC1K4AN0NNNNN belongs to the PowerFlex 755 series.

The PowerFlex 755 is intended for demanding industrial motor-control applications where the drive needs to provide considerably more capacity and functionality than a small machine-mounted inverter.

The series is particularly suitable for:

• Large pumps
• Large fans
• Blowers
• Conveyors
• Compressors
• Mining equipment
• Cement-processing machinery
• Material-handling equipment
• Process machinery
• Large industrial ventilation systems

The K4 power configuration places this particular model toward the high-current end of the 400 VAC PowerFlex 755 range.

---

4. Model Configuration

The model number contains several configuration characteristics.

The most important distinction between this configuration and some other PowerFlex 755 variants is the AN0 configuration.

The model does not include a factory-installed local HIM, which can be advantageous when the drive is intended to be operated primarily from a centralized control system.

---

5. Main Electrical Parameters

The 1465 A output current is the key electrical specification.

This is a very large current rating and makes the drive suitable for large low-voltage industrial motors.

For final selection, the motor’s nameplate current, overload requirements, acceleration requirements and actual load profile should be considered together.

---

6. Power Capacity

The three principal duty ratings are:

The distinction between these ratings is important.

A variable-torque application such as a large centrifugal fan or pump may be able to utilize the higher light-duty rating.

A constant-torque or demanding mechanical application may need to be selected according to the normal-duty or heavy-duty rating.

Therefore, the 850 kW rating should not automatically be interpreted as the maximum motor size for every type of application.

The actual motor current and load duty should be used for final sizing.

---

7. 1465 A High-Current Capability

The 1465 A rating gives this model a significant advantage for large industrial machinery.

Large motors frequently require very high current during acceleration and normal operation.

A high-capacity drive can provide the required current while allowing the motor to operate at a controlled speed.

This makes the model particularly attractive for applications where a lower-current drive would not provide sufficient capacity.

Potential applications include:

• Large process pumps
• Large cooling-water pumps
• Large industrial fans
• High-capacity blowers
• Long conveyors
• Mining conveyors
• Cement equipment
• Material-handling systems
• Large compressors
• Heavy industrial machinery

---

8. Physical Construction

The drive is based on Frame 9 construction.

Frame 9 is intended for high-power industrial installations rather than compact machine-level applications.

Because this is a large packaged drive, the final mechanical drawing should be used for equipment-room planning.

The 800 mm depth is an important dimension when planning cabinet rows, cable routing and maintenance access.

---

9. Dimensions and Weight

The model is associated with an 800 mm deep MCC-style configuration.

However, the complete physical dimensions are not safely determined from the catalog number alone.

For that reason, the following table deliberately separates known configuration information from dimensions that depend on the final mechanical arrangement.

Important: A precise weight in kilograms should not be guessed for this high-power Frame 9 package. The mechanical weight can vary according to the packaged configuration, cabinet arrangement and accessories. For engineering, transportation or floor-loading calculations, the final equipment drawing should be treated as the controlling document.

---

10. Enclosure

The product is configured as Type 1 / IP20.

This enclosure arrangement is intended for installation in a suitable industrial electrical environment.

The drive should not be treated as a sealed outdoor product.

If the installation location has excessive dust, water, corrosive chemicals, condensation or other severe environmental conditions, additional environmental measures may be necessary.

---

11. Cooling System

The 20G11LC1K4AN0NNNNN uses forced-air cooling.

This is particularly important because the drive operates at a very high current level.

Adequate airflow should be provided around the equipment.

The installation should prevent hot exhaust air from being recirculated into the cooling intake.

The ventilation system should also be inspected as part of routine maintenance.

Typical maintenance considerations include:

• Fan operation
• Airflow
• Air filters where applicable
• Cabinet temperature
• Dust accumulation
• Ventilation openings
• Abnormal fan noise

---

12. AC Input with Precharge

The model uses an AC input with precharge arrangement.

The precharge system is important in a high-power drive because the DC-link capacitors require controlled charging when the equipment is energized.

This reduces the initial electrical stress associated with charging the DC bus.

The installation should therefore include appropriately designed:

• Incoming protection
• Disconnecting equipment
• Grounding
• Power cables
• Short-circuit protection
• Maintenance isolation
• Electrical safety provisions

---

13. DC Terminals

This model configuration includes DC terminals.

This characteristic can be useful in systems where the DC bus needs to be considered as part of the overall electrical architecture.

High-power DC connections require particular attention to:

• Insulation
• Cable sizing
• Short-circuit protection
• Isolation
• Grounding
• Stored electrical energy
• Maintenance procedures

---

14. EMC Filter

The model includes an EMC filter.

The purpose of EMC filtering is to help control conducted electromagnetic interference.

However, proper installation remains essential.

The overall EMC performance can also depend on:

• Grounding
• Motor cable construction
• Cable routing
• Shielding
• Cabinet bonding
• Separation between power and control cables
• Motor cable length
• Installation layout

The EMC filter should therefore be viewed as one component of the overall electromagnetic-compatibility design.

---

15. CM Jumper Removed

The AN0 configuration specifies the common-mode capacitor jumper as removed.

This is an important configuration detail.

It distinguishes this model from configurations with the jumper installed.

The correct configuration should be maintained according to the intended electrical system and installation requirements.

This parameter should not be changed casually because common-mode capacitance can influence the electrical behavior of the drive and motor system.

---

16. No Factory-Installed HIM

The 20G11LC1K4AN0NNNNN configuration has a blank HIM selection.

In practical terms, this means the drive does not come with the enhanced local LCD HIM that is included in some other configurations.

This can be useful when the drive is intended to be controlled from:

• PLC systems
• Distributed control systems
• SCADA systems
• Remote HMIs
• Industrial Ethernet networks

A separate local interface can be considered when local commissioning or maintenance access is required.

---

17. Embedded EtherNet/IP

The drive provides embedded EtherNet/IP communication.

This is one of the most useful features for industrial automation.

A centralized control system can exchange information with the drive, including:

This arrangement allows the drive to become part of a larger automated production system.

---

18. Product Applications

Large Pump Systems

Large industrial pumps are one of the most suitable applications for this type of high-capacity drive.

Potential applications include:

• Water circulation
• Cooling water
• Industrial water supply
• Wastewater systems
• Process water
• Pumping stations
• Utility systems
• Mining water systems

Variable-speed operation can allow the pump to operate closer to the required process condition instead of continuously operating at a fixed speed.

---

19. Cooling-Water Applications

Large industrial plants often use high-capacity cooling-water pumps.

The drive can be applied to:

• Cooling towers
• Heat-exchanger systems
• Central cooling systems
• Process cooling
• Equipment cooling
• Industrial circulation systems

The ability to change motor speed allows the pumping system to respond to changing process requirements.

---

20. Large Industrial Fans

The model can be used for large industrial fan applications.

Typical examples include:

• Furnace fans
• Exhaust fans
• Combustion-air fans
• Process ventilation
• Cooling fans
• Dust-control systems
• Industrial air-handling systems

Large fans can require hundreds of kilowatts of motor power, making the 850 kW light-duty capacity particularly relevant for appropriate variable-torque applications.

---

21. Large Blowers

Industrial blowers can also benefit from variable-speed control.

Potential applications include:

• Process air
• Combustion air
• Ventilation
• Aeration
• Dust collection
• Industrial air supply

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

---

22. Conveyor Systems

Large conveyors are another major application area.

This is especially relevant in:

• Mining
• Cement
• Aggregate
• Ports
• Bulk material handling
• Heavy manufacturing

Controlled acceleration can help reduce sudden mechanical loading on the conveyor system.

This may reduce stress on:

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

---

23. Mining Applications

The high current capacity makes this model suitable for consideration in large mining systems.

Possible applications include:

• Long conveyors
• Dewatering pumps
• Ventilation systems
• Processing equipment
• Material-handling equipment
• Large auxiliary machinery

Mining environments can be demanding, so environmental protection, cooling and enclosure requirements should be evaluated separately.

---

24. Cement Industry

Cement plants commonly operate large motors for continuous production processes.

Potential applications include:

• Large fans
• Conveyors
• Pumps
• Material handling
• Dust collection
• Cooling systems
• Process equipment

The drive’s high power capability makes it suitable for large motor applications in this industry.

---

25. Material Handling

Large material-handling systems can use high-power variable frequency drives for controlled motor operation.

Potential equipment includes:

• Bulk conveyors
• Heavy material transport
• Production equipment
• Large transfer systems
• Process material-handling machinery

The exact braking requirements should be evaluated where the equipment has significant inertia.

---

26. Compressor Applications

Large industrial compressors can also be considered.

Potential benefits include:

• Adjustable speed
• Controlled acceleration
• Flexible process operation
• Centralized monitoring
• Reduced mechanical shock during starting

Compressor applications should be checked carefully because compressor load characteristics can vary considerably.

---

27. Heavy Industrial Machinery

The drive can be applied to many large rotating machines.

Potential applications include:

• Large pumps
• Fans
• Blowers
• Conveyors
• Compressors
• Process machinery
• Cooling equipment
• Material-handling equipment

The primary selection criteria should remain motor current and actual load duty.

---

28. Main Product Advantages

High 1465 A Current Rating

The most obvious advantage is the 1465 A output-current capacity.

This allows the model to control very large motors without moving immediately into a higher-voltage motor-drive architecture.

---

High Power Rating

The model provides:

850 kW light duty

800 kW normal duty

630 kW heavy duty

This makes it suitable for a broad range of large industrial applications.

---

400 VAC Three-Phase Operation

The 400 VAC three-phase configuration is widely applicable to large industrial low-voltage electrical systems.

---

High-Power Frame 9 Construction

The Frame 9 construction provides a platform designed for large motor applications.

---

Forced-Air Cooling

Forced-air cooling is appropriate for a high-power drive where substantial heat must be removed continuously.

---

Embedded EtherNet/IP

The embedded network interface supports centralized automation and monitoring.

---

EMC Filtering

The EMC filter helps address electromagnetic compatibility requirements within the overall system design.

---

AC Input with Precharge

The precharge arrangement is appropriate for managing the initial energization of the high-power DC-link system.

---

DC Terminals

The availability of DC terminals provides additional flexibility for applicable system architectures.

---

No Unnecessary Local HIM

For systems that are controlled almost entirely through a central automation system, the blank-HIM configuration can be a practical choice.

---

29. Advantages for Pump Applications

For large centrifugal pumps, variable-speed control can provide:

• Adjustable flow
• Adjustable pressure
• Controlled starting
• Process flexibility
• Centralized monitoring
• Reduced mechanical shock

The actual energy savings depend on the pump curve, system curve and operating profile.

---

30. Advantages for Fan Applications

For large fans, the drive provides:

• Adjustable airflow
• Controlled startup
• Process adjustment
• Centralized control
• Flexible operating speed

This is particularly useful in industrial ventilation and cooling systems.

---

31. Advantages for Conveyor Applications

For large conveyors, the drive’s controlled acceleration capability can help reduce sudden loading.

Potential benefits include:

• Reduced belt stress
• Reduced gearbox shock
• Smoother startup
• Adjustable speed
• Centralized monitoring
• Improved process flexibility

For high-inertia applications, the stopping and braking requirements should be checked separately because this specific configuration has no dynamic braking.

---

32. Advantages for Automated Plants

The embedded EtherNet/IP capability allows the drive to become part of a larger automation architecture.

A central controller can monitor:

• Motor speed
• Current
• Drive status
• Faults
• Warnings
• Operating frequency
• Speed references

This is particularly useful in plants where many drives are managed from a central control room.

---

33. Technical Parameter Table

---

34. Five Recommended Same-Series or Related Models

The following models are close alternatives within the same high-power PowerFlex 755 family.

The 20G11LC1K4JN0NNNNN is particularly relevant as a closely related configuration because it maintains the same basic voltage, current and power class while changing the configuration suffix.

---

35. Comparison of Related Models

---

36. Five Popular Models from the Same Brand

For a broader product selection, the following models are useful comparison points within the same manufacturer’s industrial-drive portfolio.

These models provide a useful progression when selecting a drive based on motor current and duty requirement.

---

37. Model Selection by Motor Capacity

The final selection should always be based on the motor’s actual rated current and the application’s duty requirements.

---

38. Application Comparison

---

39. Maintenance Considerations

Because this model does not have a factory-installed HIM, maintenance teams may rely more heavily on the connected automation system or an appropriate service interface for diagnostics and parameter access.

---

40. Important Difference Between AN0 and Other Configurations

The AN0 suffix is important when comparing this model with similar configurations.

This configuration is associated with:

• EMC filtering
• CM jumper removed
• No factory-installed HIM
• Embedded EtherNet/IP

This makes it particularly suitable for applications where the drive is integrated into a larger automation system and local display hardware is not required.

A related configuration with a different suffix may have a different common-mode capacitor-jumper arrangement or local interface option.

Therefore, two models that look almost identical in their electrical ratings can still have meaningful installation differences.

---

41. Why This Model Can Be a Good Choice

The 20G11LC1K4AN0NNNNN is particularly attractive when a project requires a large amount of motor current but still operates within a 400 VAC three-phase architecture.

Its main strengths are:

1. 1465 A output capacity
2. 850 kW light-duty rating
3. 800 kW normal-duty rating
4. 630 kW heavy-duty rating
5. Frame 9 high-power construction
6. 800 mm deep MCC-style cabinet
7. Forced-air cooling
8. Embedded EtherNet/IP
9. AC input with precharge
10. DC terminals
11. EMC filtering
12. No unnecessary factory-installed HIM for centralized-control applications

---

42. Complete Product Summary

---

43. Final Assessment

The 20G11LC1K4AN0NNNNN is a high-capacity PowerFlex 755 AC drive intended for large industrial motors.

Its 1465 A current rating makes it considerably more capable than the K0, K1 and K2 configurations in the same 400 VAC range.

The 850 kW light-duty, 800 kW normal-duty and 630 kW heavy-duty ratings provide a wide range of application possibilities, but the correct rating should always be selected according to the actual load characteristics.

For centrifugal pumps and large fans, the light-duty rating can be particularly useful.

For conveyors and other constant-torque machinery, the normal-duty or heavy-duty rating may be more appropriate.

The 800 mm deep MCC-style Frame 9 construction makes the product suitable for centralized electrical installations, while the forced-air cooling system supports high-power operation.

The embedded EtherNet/IP capability makes it suitable for automated plants where the drive is managed from a PLC, HMI, SCADA or other centralized control architecture.

The AN0 configuration is also significant because it provides a blank/no-HIM arrangement and a removed CM capacitor jumper, distinguishing it from otherwise similar configurations.

For applications that require local operator control directly at the drive, a related HIM-equipped configuration would generally be more convenient.

For applications where centralized automation is the primary operating method, the blank-HIM arrangement can be perfectly practical.

The main applications for this model include large water pumps, cooling-water systems, industrial fans, blowers, conveyors, mining equipment, cement equipment, material-handling systems, compressors and large process machinery.

One important engineering point is the physical weight.

Because this is a large Frame 9 packaged drive, a precise weight should not be estimated simply from the catalog number. The correct kg value should be taken from the mechanical drawing or final equipment configuration before transportation, lifting or floor-loading calculations are performed.

Overall, this model is best viewed as a very-high-current, 400 VAC, 3-phase industrial variable frequency drive for large motors, with strong suitability for centralized automated plants and demanding continuous-duty industrial applications.