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

Allen-Bradley 20G11BC910AN0NNNNN — Detailed Product Specification, Introduction, Applications, Advantages and Related Model Guide

1. Product Overview

The 20G11BC910AN0NNNNN is a high-power PowerFlex 755 air-cooled AC drive designed for large industrial motor-control applications.

It is a 400 VAC, three-phase variable frequency drive with an output current rating of approximately 910 A. The model provides approximately 560 kW Light Duty, 500 kW Normal Duty, and 400 kW Heavy Duty capability.

This places the unit in the high-power industrial-drive category, making it suitable for large pumps, fans, blowers, conveyors, material-handling systems, mining equipment, process machinery, cooling systems, and other applications where a conventional small or medium-size VFD would not provide enough current capacity.

The drive uses a Frame 9, IP20 / Type 1, 600 mm deep MCC-style construction and forced-air cooling.

The catalog configuration includes embedded EtherNet/IP, AC input with precharge, DC terminals, filtering, CM jumper removed, no integrated dynamic-braking transistor, and a blank/no-HIM configuration.

---

2. Brand and Product Series

The PowerFlex 755 series is designed for industrial applications that require more than simple motor starting and stopping.

The platform combines variable-speed motor control with communication, process control, diagnostics, feedback options, safety functions, and flexible automation-system integration.

---

3. Main Technical Parameters

---

4. Electrical Rating

The 20G11BC910AN0NNNNN is a 400 VAC high-power drive with a nominal output current of approximately 910 A.

Its three principal duty ratings are:

These three ratings are important when matching the drive to a motor.

The largest published kW value should not automatically be used for every application.

For a centrifugal pump or fan, the 560 kW Light Duty rating may be the relevant figure.

For a conventional industrial machine, the 500 kW Normal Duty rating may be more appropriate.

For a conveyor or another machine requiring higher torque and overload capability, the 400 kW Heavy Duty rating becomes the more important selection point.

The motor’s actual nameplate current, voltage, speed, torque, and overload requirements should always be considered before final selection.

---

5. 910 A Output Current

The 910 A output-current rating is the key electrical characteristic of this model.

A drive capable of supplying approximately 910 A is intended for substantially larger motors than the compact VFDs normally used in small machinery.

This current capacity can be useful for:

• Large water pumps
• Process pumps
• Large cooling pumps
• Industrial fans
• Large blowers
• Conveyors
• Mining equipment
• Material-handling machinery
• Cement-processing equipment
• Mineral-processing equipment
• Heavy industrial machinery
• Large ventilation systems

The high current also means that the associated electrical infrastructure needs to be appropriately sized.

This includes:

• Transformer capacity
• Incoming switchgear
• Circuit protection
• Busbars
• Motor cables
• Grounding
• Cabinet connections
• Cooling and ventilation
• Short-circuit withstand requirements

---

6. Light Duty — 560 kW

The 560 kW Light Duty rating is the highest power rating associated with this model.

Light Duty is generally associated with applications where the motor load has relatively moderate overload requirements.

Typical examples include:

• Centrifugal pumps
• Cooling pumps
• Large fans
• Large ventilation systems
• Blowers
• Water circulation systems

These applications often have a relatively predictable torque profile.

For variable-torque applications, speed control can also provide significant process and energy-management benefits.

---

7. Normal Duty — 500 kW

The 500 kW Normal Duty rating is suitable for many general-purpose industrial applications.

It can be considered for large motors used in:

• Process plants
• Water systems
• Industrial ventilation
• Material handling
• Manufacturing equipment
• Large auxiliary machinery
• Continuous-duty equipment

Normal Duty should be selected based on the actual motor current and load profile rather than simply matching the motor’s kW rating.

---

8. Heavy Duty — 400 kW

The 400 kW Heavy Duty rating is particularly relevant for applications with higher torque or more demanding overload requirements.

Typical applications may include:

• Conveyors
• Material-handling equipment
• High-inertia machinery
• Certain processing machines
• Mining equipment
• Heavy mechanical systems

The Heavy Duty rating becomes especially important where the motor needs to produce substantial torque during acceleration or where the load can temporarily increase.

---

9. Product Introduction

The 20G11BC910AN0NNNNN is designed to regulate the speed and torque of a large AC motor.

Instead of connecting the motor directly to a fixed-frequency electrical supply, the drive electronically controls the power delivered to the motor.

This allows the motor to:

• Start gradually
• Accelerate smoothly
• Run at adjustable speeds
• Respond to process requirements
• Decelerate according to a controlled ramp
• Stop with reduced mechanical shock
• Communicate operating conditions to an automation system

For large motors, these functions can be especially valuable because direct starting can produce high current and mechanical stress.

---

10. PowerFlex 755 Architecture

The PowerFlex 755 series is intended for applications where flexible and advanced motor control is required.

The platform supports functions associated with:

• Speed control
• Torque control
• Motor feedback
• Process PID
• Industrial communication
• Diagnostics
• Safety functions
• I/O expansion
• Application-specific control

This makes it suitable for both conventional motor-control applications and more sophisticated automated processes.

---

11. Embedded EtherNet/IP

The drive includes embedded EtherNet/IP communication.

This allows the drive to exchange commands, references, status information, and diagnostic data with a plant automation system.

Typical information may include:

This type of network integration is particularly useful in centralized industrial systems.

---

12. Blank / No-HIM Configuration

The 20G11BC910AN0NNNNN is configured with a blank / no-HIM arrangement.

HIM stands for Human Interface Module.

A local HIM is normally used for:

• Parameter setup
• Local operation
• Fault monitoring
• Drive status
• Basic troubleshooting

The no-HIM arrangement is useful when the drive is intended to be controlled from another location.

For example, operators may use:

• HMI panels
• PLC systems
• SCADA systems
• Central control rooms
• Distributed control systems

This is particularly practical in large industrial facilities where drives are installed inside electrical rooms.

---

13. AC Input With Precharge

The drive uses an AC input with precharge.

A high-power VFD contains significant DC-link capacitance.

When electrical power is initially applied, these capacitors must be charged.

Precharge controls the initial charging process and helps prevent an excessive inrush current.

This becomes increasingly important as the drive’s power level increases.

---

14. DC Terminals

The drive includes DC terminals.

The DC bus is a fundamental part of the drive’s internal power-conversion system.

The DC terminals can also be relevant in certain compatible DC-bus architectures.

Any external DC-bus arrangement should be evaluated as part of the complete system design.

---

15. Filtering

The 20G11BC910AN0NNNNN is configured with filtering.

The high-speed switching used by an AC drive can generate high-frequency electrical components.

Filtering can help control electromagnetic interference.

However, good EMC performance depends on the entire installation.

Important factors include:

• Grounding
• Bonding
• Shielding
• Motor-cable construction
• Cable routing
• Cable length
• Cabinet design
• Network-cable routing

The filter is therefore only one component of the overall EMC strategy.

---

16. CM Jumper Removed

The AN0 configuration uses the CM jumper removed.

This is an important detail within the catalog configuration.

The CM-jumper configuration can affect the drive’s common-mode and grounding behavior.

When replacing an existing unit, the complete catalog number should be compared rather than assuming that two drives with the same voltage and current ratings are electrically identical.

---

17. Dynamic Braking

The 20G11BC910AN0NNNNN does not include an integrated dynamic-braking transistor.

This is important when the connected machine has substantial rotating inertia.

During deceleration, the motor can act as a generator and return energy to the drive’s DC bus.

If the machine needs rapid stopping, this regenerated energy can cause the DC-bus voltage to increase.

Depending on the application, the system designer may need to consider:

• Dynamic braking equipment
• Regenerative braking
• Longer deceleration ramps
• Mechanical braking
• Other energy-management methods

This is particularly relevant to conveyors, high-inertia fans, and heavy rotating machinery.

---

18. Mechanical Parameters

The mechanical arrangement is based on a Frame 9, IP20 / Type 1, 600 mm deep MCC-style configuration.

Important Dimension and Weight Note

For this model, the 600 mm deep MCC-style construction is a useful catalog-level mechanical reference.

However, the complete height, width, and exact equipment mass depend on the physical configuration.

Because this is a large Frame 9 drive, the final dimensions and weight should be taken from the applicable mechanical drawing and actual assembly rather than estimated from a generic product listing.

For transportation, cabinet design, floor loading, lifting, and installation planning, the actual equipment weight in kg should always take priority over a generalized value.

---

19. Product Applications

19.1 Large Pumping Systems

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

Potential applications include:

• Water supply
• Industrial water circulation
• Cooling-water systems
• Process-water systems
• Wastewater
• Mining dewatering
• Large irrigation systems
• Utility pumping

The drive can adjust pump speed according to actual process requirements.

This can improve:

• Flow regulation
• Pressure regulation
• Process stability
• Starting performance
• Energy management

---

20. Large Industrial Fans

Industrial fans can consume large amounts of electrical power, especially when they operate continuously.

The drive can be used for:

• Furnace ventilation
• Process ventilation
• Exhaust systems
• Cooling systems
• Combustion-air systems
• Industrial air handling
• Large ventilation systems

Instead of operating at one fixed speed, the fan can be adjusted according to actual process requirements.

---

21. Large Blowers

Large blowers are another suitable application.

The drive can regulate blower speed according to:

• Airflow
• Pressure
• Process demand
• Temperature
• Production requirements

PID control can be useful when the blower needs to maintain a specific pressure or airflow target.

---

22. Conveyor Systems

The model is suitable for large conveyor systems when the motor current and duty requirements fall within its rating.

Conveyors often have significant inertia.

A controlled acceleration ramp can help reduce mechanical shock.

Potential benefits include:

• Smoother starting
• Reduced belt stress
• Reduced gearbox stress
• Reduced coupling stress
• Reduced shaft stress
• Better material flow
• Controlled stopping
• Adjustable conveyor speed

For long conveyors, variable-speed control can also help coordinate several sections of the material-handling process.

---

23. Mining Applications

Mining facilities often require large motors that operate continuously under demanding conditions.

Potential applications include:

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

The 910 A output-current capability provides a substantial amount of motor-control capacity for this type of equipment.

---

24. Cement Applications

Cement facilities use large motors for many different processes.

The drive can be considered for:

• Large process fans
• Cooling fans
• Pumps
• Conveyors
• Material handling
• Ventilation systems
• Process equipment

Variable-speed operation can be useful where process demand changes during production.

---

25. Mineral Processing

Mineral-processing equipment can require continuous operation and substantial motor power.

Potential applications include:

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

The embedded network interface is useful when the drive must be integrated into a centralized automation system.

---

26. Metals and Heavy Industry

Heavy manufacturing can require large AC motors for:

• Cooling systems
• Process fans
• Pumps
• Material handling
• Large rotating equipment
• Auxiliary machinery

The drive provides both high current capacity and industrial communication capability.

---

27. Product Advantages

27.1 High 910 A Current Capability

The 910 A output current makes the drive suitable for large industrial motors.

It provides significantly more capacity than compact VFD products.

---

27.2 560 kW Light Duty Capability

The 560 kW Light Duty rating makes it especially attractive for large variable-torque applications.

Large pumps and fans are good examples.

---

27.3 500 kW Normal Duty Capability

The 500 kW Normal Duty rating gives the model strong continuous industrial capability.

---

27.4 400 kW Heavy Duty Capability

The 400 kW Heavy Duty rating allows it to be considered for more demanding mechanical applications.

---

27.5 Embedded EtherNet/IP

Embedded communication allows the drive to communicate directly with the plant automation system.

This can simplify:

• Remote control
• Monitoring
• Diagnostics
• Data collection
• Process integration

---

27.6 PID Process Control

PID functionality is useful for:

• Pump pressure control
• Flow control
• Blower pressure control
• Fan control
• Process-variable regulation

---

27.7 No-HIM Configuration

The blank configuration is useful for centralized automation systems.

Operators can control the drive from a central HMI or SCADA system instead of a local keypad.

---

27.8 Integrated Filtering

The filtered configuration helps support electromagnetic-compatibility requirements when installed correctly.

---

27.9 Industrial MCC-Style Construction

The 600 mm deep MCC-style construction is designed for industrial electrical-room applications.

It is not a small machine-mounted VFD.

---

27.10 Flexible PowerFlex 755 Architecture

The PowerFlex 755 platform supports a broad range of control, communication, feedback, diagnostic, and safety functions.

This gives system designers considerable flexibility.

---

28. Five Recommended Models From the Same Series

The following five models are useful comparison choices within the same PowerFlex 755 high-power family.

These models are useful when the motor is larger than the target 910 A class.

The 20G11BC1K4, 20G11BC1K5, and 20G11BC1K6 models provide progressively greater current and power capacity.

---

29. Same-Series Comparison

The 20G11BC910AN0NNNNN is the smallest-current model in this comparison.

The 20G11BC2K1AN0NNNNN is the largest.

This progression provides a useful way to select the drive according to the actual motor current.

---

30. Closest Higher-Capacity Alternative

The 20G11BC1K4AN0NNNNN is a useful higher-capacity alternative.

The 1K4 model provides a substantial increase in current capability.

It can be considered when the motor is larger than the 910 A class but does not require the even higher capacity of the 1K5, 1K6, or 2K1 models.

---

31. Five Same-Brand Popular / Related Models

For broader selection, the following models are useful related products from the same brand and industrial drive family.

The first four are especially close to the target because they use the same 400 VAC high-power architecture.

The 480 VAC model becomes relevant when the motor and plant distribution voltage are different.

---

32. Application Selection Table

---

33. Pump-System Benefits

Large pumps are particularly well suited to variable-speed control.

A fixed-speed pump can deliver more flow than the process requires.

A variable frequency drive can reduce the motor speed.

The result can be:

• Better pressure control
• Better flow control
• Reduced throttling
• Smoother starting
• Reduced mechanical stress
• Potential energy savings

The PID function can allow the drive to respond automatically to a pressure or flow feedback signal.

---

34. Fan-System Benefits

Large industrial fans can operate at different speeds depending on the process.

A VFD allows airflow to follow actual demand.

Potential benefits include:

• Better airflow control
• Reduced unnecessary power consumption
• Smooth starting
• Reduced mechanical shock
• Better process stability
• Remote monitoring

This can be particularly valuable for continuously operating ventilation systems.

---

35. Conveyor-System Benefits

For conveyors, the main advantage is not necessarily energy savings.

Mechanical control is often more important.

A controlled acceleration profile can reduce sudden torque transmission through:

• Motors
• Gearboxes
• Couplings
• Shafts
• Belts
• Pulleys

This can help improve system smoothness and potentially reduce mechanical wear.

---

36. Mining-System Benefits

Mining systems can operate under harsh and variable mechanical loads.

The drive’s high current capability allows it to control large motors.

Network communication also allows information to be sent to the plant control system.

Operators can monitor:

• Motor current
• Speed
• Drive status
• Faults
• Warnings
• Process information

This is useful for centralized supervision of large equipment.

---

37. Process-Control Benefits

The integrated PID capability can be particularly useful for process applications.

A typical pressure-control arrangement can be represented as:

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

If pressure decreases, the drive can increase motor speed.

If pressure increases, the drive can reduce motor speed.

This provides continuous control instead of simple on/off operation.

Similar concepts can be applied to:

• Flow
• Air pressure
• Vacuum
• Temperature-related systems
• Other process variables

---

38. Energy Management

For suitable variable-torque applications, variable-speed control can offer substantial energy-management benefits.

This is especially relevant to centrifugal pumps and fans.

The important principle is that the motor does not have to operate continuously at maximum speed when the process does not require maximum output.

Reducing speed can reduce the mechanical power required by the load.

The actual savings depend on:

• Load type
• Operating schedule
• Speed range
• System resistance
• Process requirements
• Motor efficiency
• Drive efficiency

Therefore, energy savings should be calculated for the actual application rather than assumed from the drive rating alone.

---

39. Cooling Requirements

The 20G11BC910AN0NNNNN uses forced-air cooling.

At a power level of approximately 560 kW Light Duty, the drive can generate significant heat.

The electrical room should provide adequate ventilation and heat removal.

Important factors include:

• Room temperature
• Airflow
• Cooling-fan condition
• Dust accumulation
• Cabinet ventilation
• Air-filter condition
• Service clearance
• Installation altitude

The cooling system should be kept clean and maintained properly.

---

40. Environmental Considerations

The IP20 / Type 1 construction means that the drive should normally be installed in a suitable controlled electrical environment.

It should not be treated as a weatherproof outdoor device.

If the installation area has conductive dust, excessive moisture, corrosive gases, or water exposure, additional environmental protection may be required.

---

41. Installation Considerations

The 600 mm deep MCC-style configuration is an important part of the mechanical design.

The actual installation area needs more room than the drive’s physical depth alone.

Space should be considered for:

• Incoming cables
• Motor cables
• Cable bending radius
• Control wiring
• Network wiring
• Ventilation
• Maintenance
• Component replacement
• Inspection
• Grounding

The final cabinet layout should be based on the actual mechanical drawings.

---

42. Maintenance Considerations

Large industrial drives benefit from planned preventive maintenance.

Important maintenance areas include:

• Cooling fans
• Air passages
• Electrical connections
• Grounding
• Network connections
• Cabinet cleanliness
• Environmental conditions
• Fault history
• Parameter settings
• Cooling performance

Dust and contamination can reduce cooling performance.

Loose electrical connections can increase resistance and heat generation.

Monitoring drive status and fault information can help identify developing problems before they become serious production failures.

---

43. Transportation and Weight

Because the unit is a large Frame 9 industrial drive, transportation should be planned carefully.

The exact weight depends on the physical configuration.

The exact weight should be taken from the physical assembly and shipping documentation.

This is especially important for floor-loading calculations and lifting plans.

---

44. Complete Parameter Summary

---

45. Advantages at a Glance

---

46. Recommended Model Selection Strategy

When selecting between the related PowerFlex 755 models, the first parameter to check should be the motor full-load current.

For example, if the motor requires approximately 800–900 A, the 20G11BC910AN0NNNNN may be a logical choice.

If the motor approaches or exceeds the 910 A range, moving to a larger model such as the 20G11BC1K4AN0NNNNN may provide additional operating margin.

For substantially larger motors, the 20G11BC1K5, 20G11BC1K6, and 20G11BC2K1 models provide progressively higher current capacity.

The second major consideration is the duty classification.

A motor application that appears acceptable from a Light Duty kW perspective may not be acceptable when the actual application requires Heavy Duty torque.

The third consideration is braking.

If the machine has high inertia and needs rapid deceleration, the absence of an integrated dynamic-braking transistor becomes an important system-design consideration.

The fourth consideration is physical installation.

Frame 9 MCC-style equipment requires significantly more space than compact VFD products.

---

47. Overall Product Assessment

The 20G11BC910AN0NNNNN is a high-power industrial AC drive designed for large motors and demanding industrial processes.

Its 910 A output current, combined with 560 kW Light Duty, 500 kW Normal Duty, and 400 kW Heavy Duty ratings, gives it a strong position for large industrial motor-control applications.

The PowerFlex 755 platform provides considerably more functionality than a basic variable-speed controller.

The embedded EtherNet/IP communication is particularly valuable for plants that use centralized automation.

The PID capability makes the drive a good fit for process-oriented applications such as pumps, fans, and blowers.

The blank/no-HIM configuration is convenient for installations where operators control the drive through an HMI, PLC, SCADA system, or central control room.

The 600 mm deep MCC-style Frame 9 construction is appropriate for industrial electrical installations and provides a substantial mechanical platform for this power level.

The drive is particularly well suited to large pumps, industrial fans, blowers, conveyors, mining equipment, cement-processing systems, mineral-processing equipment, cooling systems, and other large continuous-duty machinery.

For pump and fan applications, variable-speed operation can improve process control and may reduce energy consumption when the process does not require maximum flow or airflow.

For conveyor and material-handling applications, controlled acceleration and deceleration can reduce mechanical shock and provide smoother operation.

For mining and heavy industry, the high current capacity provides enough electrical capability for large motors while the network interface makes centralized monitoring practical.

The most important selection criteria remain motor voltage, motor full-load current, duty rating, overload requirement, torque profile, acceleration requirements, braking requirements, ambient conditions, cooling, installation space, cable sizing, and electrical protection.

One point that deserves special attention is the mechanical data.

The 600 mm MCC-style depth is a useful catalog-level reference, but the complete height, width, and equipment weight can vary with the actual mechanical configuration.

For this reason, the exact weight in kg should be confirmed from the physical assembly and applicable mechanical documentation before transportation, floor-loading calculations, or cabinet installation.

Overall, the 20G11BC910AN0NNNNN is a strong choice for large-scale industrial motor control where high current, variable-speed operation, process control, industrial networking, diagnostics, and robust MCC-style construction are required.