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

Allen-Bradley 20G11BD1K0AN2NNNNN — Detailed Product Specifications, Product Introduction, Applications, Advantages and Related Models

1. Product Overview

The 20G11BD1K0AN2NNNNN is a high-power PowerFlex 755 air-cooled AC drive designed for large industrial motor-control applications.

It is a 480 VAC, three-phase variable frequency drive with an output current rating of approximately 1045 A. With a Light Duty rating of approximately 1000 HP, it belongs to the high-capacity end of the PowerFlex 755 product range.

The model is designed for large motors used in applications such as pumps, fans, blowers, conveyors, mining equipment, cement machinery, material-handling systems, process equipment, and large industrial ventilation systems.

One of the important differences between this model and the closely related 20G11BD1K0AN0NNNNN configuration is the local operator interface. The AN2 configuration uses a door-mounted HIM, providing a local human-machine interface while maintaining the large MCC-style enclosure arrangement.

The drive uses a Frame 9 construction and is intended for high-power industrial installations where electrical capacity, cooling, mechanical space, network integration, and service accessibility all need to be considered.

---

2. Brand and Product Series

The combination of 1045 A current capacity, 480 VAC operation, Frame 9 construction, and PowerFlex 755 functionality makes this a drive intended for large industrial systems rather than compact machinery.

---

3. Main Technical Parameters

The dimensions and weight correspond to the large Frame 9 MCC-style construction. Actual dimensions can vary depending on cabinet configuration and installed options, so the final mechanical drawing should be used for detailed installation planning.

---

4. Electrical Characteristics

The 20G11BD1K0AN2NNNNN is designed for 480 VAC three-phase industrial power systems.

Its approximately 1045 A output current places it in a very high-power class.

The principal duty ratings are:

The actual motor selection should always be based on the motor’s rated current and the required application duty rather than horsepower alone.

For example, two 900 HP motors can have different current requirements depending on their efficiency, power factor, voltage, design, and operating conditions.

---

5. 1000 HP Light Duty Capability

The 1000 HP Light Duty rating is one of the most significant specifications of this model.

This rating makes the drive suitable for very large variable-torque machinery.

Typical Light Duty applications include:

• Large centrifugal pumps
• Large industrial fans
• Ventilation systems
• Cooling-water systems
• Large blowers
• Process-air equipment

Variable-torque applications are especially suitable because motor power requirements can change substantially with speed.

---

6. 900 HP Normal Duty Capability

The 900 HP Normal Duty rating provides a substantial capacity for general industrial machinery.

Potential applications include:

• Process pumps
• Large fans
• Blowers
• Material-handling machinery
• Large auxiliary equipment
• Industrial rotating machinery

Normal Duty is useful when the motor experiences a moderate overload requirement rather than the more demanding torque profile of a Heavy Duty application.

---

7. 750 HP Heavy Duty Capability

The 750 HP Heavy Duty rating is important when the motor operates under more demanding torque conditions.

Typical examples include:

• Heavy conveyors
• Mining conveyors
• High-inertia equipment
• Material-handling systems
• Heavy process machinery
• Large mechanical systems requiring substantial starting torque

The Heavy Duty rating should be considered carefully whenever the equipment has high inertia or frequent acceleration and deceleration.

---

8. PowerFlex 755 Product Series

The PowerFlex 755 is a high-performance industrial AC drive platform intended for large and sophisticated motor-control applications.

Compared with smaller general-purpose drives, this platform provides a broader range of control and integration capabilities.

Typical capabilities include:

• Adjustable motor speed
• Controlled acceleration
• Controlled deceleration
• Torque control
• Speed regulation
• Feedback control
• PID process control
• Industrial networking
• Diagnostic functions
• Remote monitoring
• Programmable drive parameters

The platform is therefore well suited to machinery that needs to be integrated into a larger plant automation system.

---

9. Door-Mounted HIM Configuration

The most noticeable configuration feature of 20G11BD1K0AN2NNNNN is its door-mounted HIM.

HIM stands for Human Interface Module.

Instead of having no local operator interface, as found on some closely related configurations, this model provides a local interface mounted on the enclosure door.

This is useful when operators or maintenance personnel need direct access to drive information.

The local interface can be useful for:

• Drive status
• Fault information
• Warning information
• Parameter adjustment
• Local diagnostics
• Basic operating information
• Commissioning
• Maintenance

This is particularly valuable in large industrial installations where the drive is installed in a dedicated electrical room.

---

10. Advantages of the Door-Mounted HIM

A door-mounted interface provides a practical balance between centralized automation and local service access.

The main control system can still communicate with the drive over the industrial network.

At the same time, maintenance personnel can inspect the drive locally.

This can reduce the need to connect a temporary service device whenever basic information is required.

For commissioning and troubleshooting, local access can be especially useful.

---

11. IP20 / NEMA Type 1 Construction

The main drive enclosure is IP20 / NEMA Type 1.

This means the drive is intended for installation inside an appropriate industrial electrical environment.

It should not be treated as an outdoor weatherproof enclosure.

The installation environment should protect the drive from:

• Water
• Direct rain
• Excessive dust
• Corrosive contamination
• Conductive particles
• Excessive humidity

The electrical room should also provide appropriate ventilation and temperature control.

---

12. Air-Cooled Construction

The drive uses a forced-air cooling system.

At more than 1000 A, thermal management is an important part of system design.

The cooling system must remove heat generated by:

• Power semiconductors
• DC-link components
• Internal conductors
• Switching components
• Control electronics

The electrical room therefore needs sufficient airflow and heat-removal capacity.

---

13. AC Input With Precharge

The model uses an AC input with precharge configuration.

A large variable frequency drive contains substantial DC-link capacitance.

When the drive is energized, the DC bus needs to charge in a controlled manner.

The precharge function helps limit the initial charging current and provides a controlled startup of the drive’s internal power system.

This is particularly important for a drive of this electrical size.

---

14. DC Terminals

The drive includes DC terminals.

The DC bus forms an important part of the drive’s power-conversion system.

The terminals can provide additional flexibility for properly engineered DC-bus arrangements.

However, external DC connections require careful attention to:

• DC voltage
• Protection
• Isolation
• Precharge
• Grounding
• Fault protection
• Energy flow
• Equipment compatibility

They should therefore be incorporated only into an appropriately engineered system.

---

15. EMC Filtering

The model includes EMC filtering.

The purpose of EMC filtering is to help control conducted electrical interference associated with high-frequency switching.

This is particularly important in large installations where:

• Motor cables are long
• Multiple drives are installed
• Sensitive control electronics are nearby
• Communication networks are extensive
• High switching currents are present

Correct grounding, cable routing, shielding, bonding, and cabinet construction remain essential.

---

16. CM Jumper Configuration

The model uses a removed CM jumper configuration.

This is relevant to the common-mode and grounding behavior of the drive.

When replacing an existing drive, the CM-jumper arrangement should be checked rather than assuming that two drives with the same current rating have identical electrical configurations.

This is particularly important in systems with:

• Grounded power systems
• Ungrounded systems
• High-resistance grounded systems
• EMC filters
• Long motor cables

The final grounding arrangement should follow the applicable installation requirements.

---

17. Dynamic Braking

The 20G11BD1K0AN2NNNNN is configured with no dynamic braking.

There is no integrated dynamic-braking transistor in this configuration.

This is an important point for applications requiring rapid deceleration.

When a motor decelerates, mechanical energy can be returned to the drive’s DC bus.

If the regenerated energy becomes excessive, the DC-bus voltage can rise.

Depending on the machine, the system may require:

• Longer deceleration time
• External braking equipment
• Regenerative equipment
• Mechanical braking
• A different energy-management arrangement

For high-inertia machinery, this should be considered during the initial drive-selection process.

---

18. Mechanical Dimensions

The Frame 9 construction is physically large.

The approximate standard mechanical dimensions are:

Height: 2453 mm

Width: 1200 mm

Depth: 600 or 800 mm

The approximate standard weight is:

1246 kg

For a larger drive/options cabinet arrangement, the overall mechanical size can increase to approximately:

2453 × 1800 × 800 mm

with an approximate weight of:

2290 kg.

---

19. Mechanical Parameter Table

---

20. Product Introduction

The 20G11BD1K0AN2NNNNN is essentially a large-scale industrial motor-control system packaged as a high-power variable frequency drive.

Its purpose is not simply to start and stop a motor.

It can regulate motor speed and torque while communicating operating information with a larger automation system.

This makes it suitable for processes where motor speed needs to change according to actual production requirements.

For example, a large pump does not necessarily need to run at full speed continuously.

A large fan may need different airflow at different stages of production.

A conveyor may need different speeds depending on material flow.

A process blower may need to respond to pressure feedback.

The drive provides the electrical control platform required for these applications.

---

21. Large Pump Applications

Large pumps are one of the strongest application areas for this model.

Typical applications include:

• Water-treatment pumping
• Cooling-water circulation
• Industrial water systems
• Wastewater pumping
• Process-water circulation
• Mining dewatering
• Large utility pumps
• Industrial circulation systems

The drive can adjust motor speed according to actual demand.

This provides more flexible operation than simply running a motor at a fixed speed.

---

22. Process Pump Applications

The built-in PID capability is particularly useful for process pumps.

A typical system can be organized as:

Pressure Sensor → PID Control → Drive → Motor → Pump → Process

If pressure falls below the target, the drive can increase motor speed.

If pressure rises above the target, the drive can reduce motor speed.

This provides an automatic method of maintaining a process setpoint.

Potential controlled variables include:

• Pressure
• Flow
• Differential pressure
• Level
• Vacuum

Other process variables can also be incorporated depending on the control architecture.

---

23. Large Fan Applications

Large industrial fans can require hundreds of horsepower.

This drive is suitable for applications such as:

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

Variable-speed control allows airflow to be adjusted according to the process.

This can improve process control and can also reduce unnecessary energy use when the system does not require maximum airflow.

---

24. Large Blower Applications

Large blowers are another natural application.

Potential uses include:

• Wastewater aeration
• Process-air systems
• Industrial ventilation
• Pneumatic material handling
• Combustion systems
• Manufacturing processes

The drive can respond to process feedback and adjust blower speed accordingly.

---

25. Conveyor Applications

Large conveyors can have significant mechanical inertia.

Starting a heavily loaded conveyor directly can place substantial stress on:

• Motor
• Gearbox
• Coupling
• Conveyor belt
• Bearings
• Shafts
• Pulleys

Variable-speed acceleration provides a smoother transition from zero speed to operating speed.

The drive can also provide adjustable conveyor speed.

This is particularly useful in:

• Mining
• Cement production
• Bulk-material handling
• Mineral processing
• Ports
• Large manufacturing plants

---

26. Mining Applications

Mining operations frequently use very large motors.

The 1045 A output rating gives this model sufficient electrical capacity for many large mining machines.

Potential applications include:

• Ore conveyors
• Bulk-material conveyors
• Dewatering pumps
• Mine ventilation fans
• Material-transfer equipment
• Mineral-processing machinery
• Large auxiliary systems

In a mining environment, remote diagnostics can also be valuable because some equipment can be difficult to access.

---

27. Cement Industry Applications

Large cement facilities use high-power motors throughout their production processes.

Potential applications include:

• Process fans
• Cooling fans
• Conveyors
• Material-handling equipment
• Large pumps
• Ventilation systems
• Process machinery

Variable-speed control allows equipment to respond more closely to production requirements.

---

28. Mineral Processing Applications

Mineral-processing plants commonly use high-power motor systems.

Typical applications include:

• Slurry pumps
• Process-water pumps
• Conveyors
• Large fans
• Blowers
• Material-transfer systems
• Ventilation equipment

The drive’s high-current capability and network integration make it suitable for large process installations.

---

29. Heavy Industrial Machinery

The model can be considered for many types of heavy industrial rotating equipment.

Examples include:

• Large process machines
• Cooling systems
• High-capacity pumps
• Large ventilation equipment
• Blowers
• Conveyors
• Material-handling systems
• Large auxiliary machinery

The final selection should always be based on the actual motor current, torque requirements, duty cycle, acceleration profile, and environmental conditions.

---

30. Main Product Advantages

30.1 Very High Current Capacity

The approximately 1045 A output current is one of the most important advantages.

It allows the drive to control very large AC motors.

---

30.2 1000 HP Light Duty Capacity

The 1000 HP Light Duty rating provides a large operating range for variable-torque equipment.

---

30.3 900 HP Normal Duty Capacity

The 900 HP Normal Duty rating makes the drive suitable for a wide range of large industrial machinery.

---

30.4 750 HP Heavy Duty Capacity

The Heavy Duty rating provides a substantial capacity for demanding mechanical applications.

---

30.5 Door-Mounted HIM

The door-mounted HIM provides local access to drive information.

This is particularly useful for:

• Commissioning
• Maintenance
• Troubleshooting
• Parameter checking
• Local status monitoring

---

30.6 Embedded EtherNet/IP

The integrated communication capability makes the drive suitable for centralized automation systems.

---

30.7 PID Control

PID functionality makes the drive particularly useful for pressure, flow, airflow, and other process-control applications.

---

30.8 Frame 9 High-Power Construction

The Frame 9 design provides the physical and electrical capacity required for large industrial motors.

---

30.9 MCC-Style Installation

The 600 mm deep MCC-style construction is suitable for large industrial electrical rooms.

---

30.10 Air Cooling

Forced-air cooling provides a practical thermal-management method for a drive of this size.

---

31. Local HIM vs. No-HIM Configuration

The difference between the AN2 and AN0 configurations is especially relevant when selecting a replacement.

For an installation where local operator access is important, the AN2 configuration is generally more convenient.

---

32. Five Same-Series or Closely Related Models

The following models are closely related PowerFlex 755 configurations and provide useful alternatives around the target model.

The 800 A and 960 A versions are useful when the required motor current is lower.

The 1135 A and 1420 A versions provide additional capacity when the motor’s current demand is higher.

---

33. Same-Series Comparison

---

34. Five Same-Brand Related Models

The following models provide useful comparisons across different voltage classes and power ranges.

The first four are particularly useful when the application requires a different voltage class or a slightly different current range.

The 690 VAC configuration is more specialized and should be selected based on the actual motor voltage and plant power system.

---

35. Large Pump Selection Guide

The target model is best used where the motor is genuinely large enough to justify a 1045 A-class drive.

---

36. Fan and Blower Selection

---

37. Conveyor Selection

For large conveyors, the main benefit is controlled acceleration.

The drive can gradually increase motor speed rather than applying full electrical power immediately.

This can reduce mechanical stress on the conveyor system.

The application should still be evaluated for:

• Starting torque
• Full-load current
• Belt inertia
• Gearbox ratio
• Acceleration time
• Deceleration time
• Regenerative energy
• Mechanical braking requirements

The absence of integrated dynamic braking is particularly relevant to systems requiring rapid stops.

---

38. Mining and Bulk Material Handling

The drive can be useful in large bulk-material systems where high-power motors are required.

Potential applications include:

• Ore conveyors
• Coal conveyors
• Aggregate conveyors
• Transfer conveyors
• Mine ventilation
• Dewatering
• Material-transfer systems
• Mineral-processing equipment

The door-mounted HIM is particularly useful in installations where maintenance personnel need local access to drive information.

---

39. Cement and Aggregate Processing

Cement and aggregate plants commonly operate large motors for long periods.

The drive can be applied to:

• Large process fans
• Conveyors
• Pumps
• Blowers
• Ventilation systems
• Material handling
• Process machinery

Its large current rating provides sufficient capacity for many high-power motors.

---

40. Industrial Process Control

The combination of high-power motor control and PID functionality makes this drive suitable for process applications.

A process system may use:

Flow Sensor → Controller / PID → Drive → Motor → Pump

or:

Pressure Sensor → PID → Drive → Blower → Process

The drive can continuously adjust motor speed according to the process feedback.

This can improve process stability compared with fixed-speed operation.

---

41. Energy Efficiency Advantages

A variable frequency drive can provide energy-saving potential in applications where the process does not continuously require full motor speed.

This is especially relevant to centrifugal pumps and fans.

When the required flow or airflow decreases, the drive can reduce motor speed.

Potential benefits include:

• Lower operating speed
• Reduced throttling
• Better process matching
• Reduced mechanical stress
• Potential energy savings

Actual energy savings depend on the specific machine and operating profile.

---

42. Communication and Automation Advantages

The embedded industrial communication capability allows the drive to become part of a larger automation system.

A control system can monitor:

• Motor speed
• Output current
• Frequency
• Drive status
• Faults
• Warnings
• Process variables
• Operating conditions

This is especially useful when a plant has many large drives distributed across different areas.

---

43. Maintenance Advantages of Door-Mounted HIM

The door-mounted HIM provides a convenient local interface.

A technician can obtain important information without necessarily opening the main enclosure.

This can make routine inspection more convenient.

Potential uses include:

• Checking drive status
• Reviewing faults
• Reviewing warnings
• Adjusting parameters
• Verifying operating values
• Supporting commissioning
• Troubleshooting

For large industrial equipment, convenient local access can reduce maintenance time.

---

44. Mechanical Installation Considerations

The drive is physically large enough that installation planning should begin before the equipment arrives.

Important considerations include:

• Electrical-room dimensions
• Door clearance
• Floor loading
• Cable routing
• Cable bending radius
• Ventilation
• Heat removal
• Maintenance access
• Transportation route
• Lifting equipment
• Service access

A drive weighing approximately 1246 kg cannot be treated like a conventional small VFD.

---

45. Transportation and Lifting

The final shipping arrangement should be checked before moving the equipment into the electrical room.

---

46. Environmental Considerations

The IP20 / NEMA Type 1 enclosure requires an appropriate installation environment.

The drive should be protected from direct exposure to:

• Rain
• Water spray
• Excessive dust
• Conductive contamination
• Corrosive chemicals
• Excessive humidity

The electrical room should maintain appropriate temperature and ventilation conditions.

---

47. Cooling Considerations

A drive of this size generates significant heat.

The forced-air cooling system therefore needs adequate airflow.

The installation should consider:

• Ambient temperature
• Airflow
• Ventilation
• Fan condition
• Dust accumulation
• Filter condition where applicable
• Heat generated by other equipment
• Room HVAC capacity

Poor thermal management can reduce the reliability and service life of power electronics.

---

48. Replacement Selection Considerations

When selecting a replacement for 20G11BD1K0AN2NNNNN, it is important to compare the complete configuration rather than only the horsepower.

Important parameters include:

A replacement with the same horsepower but a different HIM, enclosure, filtering, braking, or frame configuration may not be a direct mechanical or electrical replacement.

---

49. Closest Smaller Model

20G11BD960AN2NNNNN

This model is a natural smaller alternative.

It provides approximately 960 A and is rated around:

• 900 HP Light Duty
• 800 HP Normal Duty
• 700 HP Heavy Duty

It remains a Frame 9, 480 VAC PowerFlex 755 configuration with a door-mounted HIM.

It can be considered when the motor current requirement is comfortably below the 1045 A capacity of the target model.

---

50. Closest Larger Model

20G11BD1K2AN2NNNNN

This model provides approximately 1135 A.

Its approximate ratings are:

• 1100 HP Light Duty
• 1000 HP Normal Duty
• 800 HP Heavy Duty

It is a logical choice when the target 1045 A capacity is too close to the motor’s actual current requirement.

---

51. Higher-Capacity Model

20G11BD1K4AN2NNNNN

The approximately 1420 A version provides substantially more capacity.

Its approximate ratings are:

• 1350 HP Light Duty
• 1250 HP Normal Duty
• 1000 HP Heavy Duty

It remains within the large Frame 9 class.

---

52. Larger Frame Option

20G11BD1K5AN2NNNNN

The 20G11BD1K5AN2NNNNN is a larger-capacity configuration.

Its approximate current rating is 1525 A, with approximately:

• 1500 HP Light Duty
• 1350 HP Normal Duty
• 1100 HP Heavy Duty

This moves into the larger Frame 10 class, so the physical installation requirements become more demanding.

---

53. Very Large Capacity Option

20G11BD2K0AN2NNNNN

The 20G11BD2K0AN2NNNNN is an even higher-capacity PowerFlex 755 configuration.

It is approximately:

• 2070 A
• 2000 HP Light Duty
• 1750 HP Normal Duty
• 1650 HP Heavy Duty

This is intended for extremely large industrial motors and should only be considered where the application genuinely requires this level of current capacity.

---

54. Detailed Same-Series Recommendation Table

---

55. Same-Brand Model Comparison

For exact replacement work, the voltage class should be treated as a primary selection criterion.

A 400 VAC, 480 VAC, 600 VAC, and 690 VAC drive should not be considered interchangeable simply because their horsepower ratings appear similar.

---

56. Product Strengths at a Glance

---

57. Overall Technical Evaluation

The 20G11BD1K0AN2NNNNN is a high-capacity industrial variable frequency drive designed for very large motor systems.

Its most important electrical characteristics are the 480 VAC three-phase input, approximately 1045 A output current, and 1000 HP Light Duty / 900 HP Normal Duty / 750 HP Heavy Duty capability.

Its PowerFlex 755 platform gives it a broad range of industrial motor-control functions.

The drive is particularly appropriate for large pumps, fans, blowers, conveyors, mining machinery, cement equipment, material-handling systems, and process equipment.

The door-mounted HIM is a major practical advantage of the AN2 configuration.

It provides local access to drive information while still allowing the drive to be incorporated into a centralized automation system.

This makes the model especially attractive for installations where both remote control and local maintenance access are required.

The embedded EtherNet/IP capability allows the drive to exchange operating and diagnostic information with the larger automation architecture.

PID functionality makes the drive useful in applications where motor speed needs to respond automatically to pressure, flow, airflow, or another process variable.

The air-cooled Frame 9 construction is intended for large industrial electrical installations.

At approximately 2453 × 1200 × 600/800 mm and approximately 1246 kg, the equipment requires careful consideration of transportation, floor loading, ventilation, cable access, lifting, and maintenance space.

The absence of integrated dynamic braking should also be taken seriously when the drive is being considered for high-inertia machinery.

Applications requiring rapid deceleration may require a different braking or regenerative-energy solution.

---

58. Final Parameter Summary

---

59. Final Product Description

The 20G11BD1K0AN2NNNNN can be described as a 480 VAC, three-phase, 1045 A, Frame 9, air-cooled PowerFlex 755 high-power AC drive with 1000 HP Light Duty, 900 HP Normal Duty, and 750 HP Heavy Duty capability.

Its configuration combines a large electrical capacity with industrial automation functionality.

The door-mounted HIM makes the model particularly convenient for commissioning, inspection, troubleshooting, and local maintenance.

The embedded EtherNet/IP capability allows the drive to participate in a centralized industrial control system, while PID functionality supports process-control applications such as pump pressure regulation, flow control, blower pressure control, and ventilation management.

The approximately 1246 kg equipment weight and large Frame 9 dimensions make this a serious industrial installation rather than a compact machine-mounted VFD.

Its strongest application areas are large pumps, large fans, blowers, conveyors, mining systems, cement equipment, material-handling machinery, and high-power process systems.

For applications where a 1045 A drive is appropriately sized, this configuration offers a strong combination of high electrical capacity, local operator access, network integration, process control, and large-motor handling capability.

The most important point when selecting or replacing this model is to match the complete configuration, not just the horsepower rating. Voltage, current, duty class, frame size, enclosure, HIM arrangement, braking configuration, EMC configuration, grounding arrangement, dimensions, and weight should all be checked together.