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Allen-Bradley 20G11BC1K1AN0NNNNN — Detailed Product Specifications, Introduction, Applications, Advantages and Related Model Recommendations

1. Product Overview

The 20G11BC1K1AN0NNNNN is a high-power Allen-Bradley PowerFlex 755 AC drive designed for large industrial motor-control applications.

It is an air-cooled, three-phase AC variable frequency drive in the 400 VAC class, with a rated output current of approximately 1,090 A.

The drive provides approximately 710 kW Low Duty, 630 kW Normal Duty and 500 kW Heavy Duty capability, making it suitable for large industrial motors and demanding process equipment.

The model is a Frame 9, IP20 / NEMA Type 1, 600 mm deep MCC-style configuration.

It includes an AC input with precharge, DC terminals, embedded EtherNet/IP, air cooling and a filtered configuration.

A particularly important detail is the AN0 configuration. The A configuration indicates the filtered version with the CM jumper removed, while the 0 configuration indicates no HIM.

This means the 20G11BC1K1AN0NNNNN is configured primarily for integration into a larger control system rather than for local operation through a factory-installed operator interface.

The model has been discontinued, with the listed direct replacement being 20G11BC1K1JN0NNNNN.

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2. Brand and Product Series

Item	Specification
Brand	Allen-Bradley
Product family	PowerFlex
Series	PowerFlex 755
Product type	High-Power AC Variable Frequency Drive
Catalog number	20G11BC1K1AN0NNNNN
Drive construction	Air cooled
Voltage class	380–480 VAC
Nominal voltage	400 VAC
Input phase	3 phase
Output phase	3 phase
Output current	1,090 A
Low Duty rating	710 kW
Normal Duty rating	630 kW
Heavy Duty rating	500 kW
Frame	Frame 9
Enclosure	IP20 / NEMA Type 1
Cabinet style	600 mm deep MCC style
Cooling	Forced air
Input configuration	AC input with precharge
DC terminals	Yes
Filtering	Filtered
CM jumper	Removed
Dynamic braking	No internal dynamic-braking transistor
HIM	None
Communication	Embedded EtherNet/IP
Lifecycle	Discontinued
Direct replacement	20G11BC1K1JN0NNNNN

The exact product information identifies the model as a PowerFlex Air Cooled 755 AC Drive and lists the product as discontinued, with a direct replacement in the corresponding JN configuration.

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3. Main Technical Parameters

Parameter	Specification
Model	20G11BC1K1AN0NNNNN
Brand	Allen-Bradley
Series	PowerFlex 755
Product category	Industrial AC Variable Frequency Drive
Input voltage	380–480 VAC class
Nominal voltage	400 VAC
DC bus voltage	Approximately 540 VDC class
Input phase	3 phase
Output phase	3 phase
Output current	1,090 A
Low Duty power	710 kW
Normal Duty power	630 kW
Heavy Duty power	500 kW
Frame size	Frame 9
Cooling	Air cooled / forced air
Input type	AC input with precharge
DC terminals	Yes
Main enclosure	IP20 / NEMA Type 1
Cabinet style	MCC style
Cabinet depth	600 mm
EMC filtering	Yes
CM jumper	Removed
Dynamic-braking transistor	None
HIM	None
Network	Embedded EtherNet/IP
Installation	Floor mounted
Approx. dimensions H × W × D	2453 × 1200 × 600 mm
Weight (kg)	Approximately 1,246 kg
Lifecycle status	Discontinued
Direct replacement	20G11BC1K1JN0NNNNN

The 1,090 A rating, 400 VAC class, Frame 9 construction and 630 kW Normal Duty rating are consistent with published product specifications for this exact catalog number.

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4. Dimensions and Weight

The 20G11BC1K1AN0NNNNN belongs to the large Frame 9 cabinet class.

Mechanical Parameter	Specification
Frame	Frame 9
Cabinet style	MCC style
Protection	IP20 / NEMA Type 1
Cabinet depth	600 mm
Height	Approximately 2453 mm
Width	Approximately 1200 mm
Depth	Approximately 600 mm
Dimensions H × W × D	Approximately 2453 × 1200 × 600 mm
Weight (kg)	Approximately 1,246 kg
Cooling	Forced air
Mounting	Floor mounted

A closely corresponding Frame 9 configuration is listed at approximately 1,246.47 kg, which is consistent with the approximately 1,246 kg figure used for this product class.

The dimensions and weight should be treated as installation-planning values.

A complete lineup containing additional cabinets, disconnect equipment, line equipment or other options can have a larger footprint and higher total weight.

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5. Product Introduction

The 20G11BC1K1AN0NNNNN is a high-capacity variable frequency drive intended to regulate large three-phase AC motors.

Its basic operating purpose is to convert incoming three-phase AC power into controlled motor power.

Instead of operating a large motor only at fixed speed, the drive allows motor speed and torque to be adjusted according to the needs of the machine.

This is particularly valuable in industrial processes where the required production rate changes during operation.

For example, a large pump may need maximum flow during one production period and considerably less flow during another.

A large fan may need different airflow levels depending on process temperature.

A conveyor may need to operate at different speeds depending on production throughput.

The drive allows the motor to respond to those changing requirements.

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6. Product Positioning

The 20G11BC1K1AN0NNNNN is positioned toward the high-power end of the PowerFlex 755 family.

Its approximately 1,090 A output-current capability is intended for very large industrial motors.

The 630 kW Normal Duty rating places it well above the size range normally associated with compact machine drives.

Typical applications include:

• Large water pumps.
• Process pumps.
• Cooling-water pumps.
• Large industrial fans.
• Furnace fans.
• Blowers.
• Large conveyors.
• Crushers.
• Compressors.
• Mining equipment.
• Cement-processing machinery.
• Material-handling equipment.
• Industrial ventilation.
• Large HVAC equipment.
• Heavy process machinery.

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7. Duty Ratings

One of the most important characteristics of this model is its multiple duty rating.

Duty Classification	Power Rating	Typical Load
Low Duty	710 kW	Variable-torque and less demanding applications
Normal Duty	630 kW	General continuous industrial applications
Heavy Duty	500 kW	Higher torque and overload applications
Output current	1,090 A	Large motor applications

The 710 kW Low Duty rating provides the highest power rating when the load does not require the same overload capability as a demanding constant-torque machine.

The 630 kW Normal Duty rating is particularly important for large general-purpose industrial equipment.

The 500 kW Heavy Duty rating is more appropriate when the machine requires greater torque or overload performance.

The actual duty classification should always be selected from the motor nameplate, load characteristics and operating cycle.

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8. 1,090 A Output Current

The 1,090 A output-current rating is one of the defining characteristics of the 20G11BC1K1AN0NNNNN.

This current capacity makes the drive suitable for very large motors.

When selecting a drive for a large motor, the motor’s actual nameplate current is more useful than motor kW alone.

Two motors with similar power ratings can have different current requirements because of differences in:

• Motor efficiency.
• Power factor.
• Rated voltage.
• Rated speed.
• Motor construction.
• Operating conditions.
• Duty cycle.

Therefore, the motor full-load current should be compared carefully with the drive rating.

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9. 400 VAC Three-Phase Configuration

The drive is designed for the 380–480 VAC class, with 400 VAC as the nominal system voltage.

This is a common industrial voltage class.

The three-phase input is converted into controlled electrical output for the motor.

This provides adjustable motor speed and controlled acceleration and deceleration.

The result is a more flexible motor-control system than a conventional fixed-speed starter.

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10. Frame 9 Construction

The drive uses a Frame 9 mechanical configuration.

This is a large floor-mounted industrial cabinet.

The large physical format provides the space required for:

• High-current power connections.
• Power semiconductor assemblies.
• DC-bus components.
• Cooling equipment.
• Control electronics.
• Protection components.
• High-current terminals.
• Service access.

The approximate dimensions are:

2453 mm high × 1200 mm wide × 600 mm deep

with an approximate weight of:

1,246 kg.

This is substantial industrial equipment and requires careful mechanical planning.

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11. IP20 / NEMA Type 1 Protection

The main cabinet uses IP20 / NEMA Type 1 protection.

This configuration is intended for installation inside a protected industrial environment.

It is not intended to be treated as a weatherproof outdoor enclosure.

The installation should therefore protect the equipment from:

• Direct water.
• Rain.
• Condensation.
• Conductive dust.
• Corrosive gases.
• Excessive oil contamination.
• Foreign objects.
• Excessive vibration.
• Excessive temperature.

A dedicated electrical room or appropriately controlled industrial area is generally more suitable.

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12. Air-Cooled Construction

The drive uses forced-air cooling.

At more than 1,000 A and several hundred kilowatts, the power electronics can generate significant heat.

The cooling system therefore plays an important role in the overall reliability of the installation.

The surrounding electrical room should provide:

• Adequate ventilation.
• Clean cooling air.
• Unrestricted airflow.
• Correct cabinet clearances.
• Proper fan operation.
• Suitable ambient conditions.
• Regular maintenance.

Blocked air passages or failed cooling fans can lead to increased internal temperature.

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13. Filtering and CM Jumper Configuration

The 20G11BC1K1AN0NNNNN is a filtered configuration.

The A configuration indicates that the CM jumper is removed.

This is an important distinction when comparing the model with similar PowerFlex 755 catalog numbers.

For example, a similar JN0 configuration has the corresponding CM jumper installed.

This difference should not be ignored when replacing or comparing drives.

The common-mode configuration affects the electrical relationship between the drive, filtering system and grounding arrangement.

For replacement projects, the entire catalog number should therefore be checked.

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14. No Internal Dynamic-Braking Transistor

The model does not include an internal dynamic-braking transistor.

This is not necessarily a disadvantage.

For many variable-torque applications, such as pumps and fans, rapid regenerative braking is not normally required.

The machine can often be allowed to decelerate gradually.

However, high-inertia applications need additional evaluation.

Examples include:

• Large conveyors.
• Centrifuges.
• Large rotating drums.
• Heavy crushers.
• Certain fans.
• Lifting equipment.

When a high-inertia machine slows down, mechanical energy can be returned to the drive’s DC bus.

The braking strategy should therefore be evaluated separately.

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15. No HIM Configuration

The AN0 configuration does not include a factory-installed HIM.

This is an important characteristic of the product.

The drive is therefore well suited to installations where:

• The PLC provides the primary control.
• An HMI provides operator control.
• EtherNet/IP provides communication.
• The drive is installed inside a controlled electrical room.
• Local operator access is not required.

A no-HIM configuration can also simplify a centralized automation architecture where operators are expected to work from a control station rather than directly at the drive.

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16. Embedded EtherNet/IP

The PowerFlex 755 platform supports embedded EtherNet/IP communication.

This allows the drive to communicate with the plant automation system.

Typical information can include:

• Start command.
• Stop command.
• Speed reference.
• Actual speed.
• Output frequency.
• Output current.
• Drive status.
• Alarm status.
• Fault status.
• Diagnostic information.

This is especially useful in large facilities containing many motor drives.

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17. Centralized Control

The absence of a HIM is not necessarily a limitation when the drive is part of a centralized control system.

In a modern industrial installation, operators may work from:

• PLC systems.
• HMIs.
• SCADA systems.
• Control-room workstations.
• Industrial Ethernet networks.

The drive can remain inside an electrical room while the operator controls the motor remotely.

This is particularly appropriate for large pumping stations, conveyor systems and process plants.

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18. Application — Large Water Pumps

Large water pumps are one of the strongest applications for a drive of this size.

A large pump does not necessarily need maximum flow continuously.

The drive can reduce motor speed when less flow is required.

Potential benefits include:

• Adjustable flow.
• Adjustable pressure.
• Reduced throttling.
• Smoother operation.
• Lower mechanical stress.
• Potential energy savings.

The drive can also be integrated with pressure and flow control systems.

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19. Application — Process Pumps

Process pumps are often required to operate at different flow rates.

A variable frequency drive can regulate pump speed according to process demand.

Potential applications include:

• Process-water circulation.
• Cooling-water circulation.
• Feedwater systems.
• Transfer pumps.
• Industrial liquid handling.
• Chemical process systems.

The centralized network architecture of the 20G11BC1K1AN0NNNNN can be particularly useful when multiple pumps must be coordinated.

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20. Application — Cooling Systems

Large industrial cooling systems often contain high-power pumps and fans.

The drive can adjust motor speed according to the actual cooling requirement.

Possible applications include:

• Cooling-water pumps.
• Cooling towers.
• Heat-exchanger systems.
• Furnace cooling.
• Industrial HVAC.
• Process cooling.

Variable-speed operation can help avoid unnecessary operation at maximum speed.

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21. Application — Large Fans

Large fans can require several hundred kilowatts of motor power.

The drive can regulate fan speed according to required airflow.

Possible applications include:

• Furnace fans.
• Mine ventilation.
• Process exhaust.
• Cooling fans.
• Dust-collection systems.
• Industrial ventilation.

Variable-speed control can provide more flexible airflow control than fixed-speed operation.

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22. Application — Blowers

Large blowers are used in many process industries.

Potential applications include:

• Wastewater aeration.
• Combustion air.
• Pneumatic conveying.
• Process drying.
• Furnace systems.
• Industrial air supply.

The drive can adjust blower speed according to the process requirement.

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23. Application — Large Conveyors

Large conveyors often require controlled acceleration.

A drive can gradually increase motor speed instead of applying full speed immediately.

Potential benefits include:

• Reduced belt shock.
• Reduced gearbox stress.
• Reduced coupling stress.
• Smoother material movement.
• Adjustable production speed.
• Better synchronization.

For high-inertia conveyors, braking requirements should be analyzed separately because this model does not contain an internal dynamic-braking transistor.

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24. Application — Mining Equipment

Mining operations frequently use very large motors.

The 20G11BC1K1AN0NNNNN can be considered for applications such as:

• Long conveyors.
• Crushers.
• Large pumps.
• Mine ventilation.
• Material handling.
• Processing equipment.

The high-current Frame 9 architecture is particularly suitable for large mining motors.

However, environmental conditions such as dust, vibration and temperature must be evaluated separately.

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25. Application — Cement Industry

Cement plants use many large rotating machines.

Possible applications include:

• Kiln fans.
• Exhaust fans.
• Crushers.
• Large conveyors.
• Pumps.
• Blowers.
• Material-handling equipment.

The high power and current capacity of the PowerFlex 755 make it appropriate for many of these systems.

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26. Application — Compressors

Large compressors can require motors in the hundreds-of-kilowatts range.

A variable frequency drive allows compressor speed to follow actual process requirements.

Potential benefits include:

• Adjustable output.
• Controlled acceleration.
• Process matching.
• Reduced mechanical stress.
• Potential energy savings.

The actual suitability depends on compressor design and torque characteristics.

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27. Application Suitability

Application	Suitability	Main Reason
Large water pump	Excellent	High current and variable-speed control
Process pump	Excellent	Process regulation
Cooling-water pump	Excellent	Adjustable flow
Large fan	Excellent	Variable airflow
Large blower	Excellent	Adjustable process output
Large conveyor	Excellent	Controlled acceleration
Mining conveyor	Excellent	High-power motor control
Crusher	Very Good	High-current motor capacity
Compressor	Very Good	Variable-speed operation
Cement machinery	Very Good	High-power industrial control
Cooling-tower fan	Excellent	Adjustable airflow
Industrial HVAC	Very Good	Variable-speed operation
Hoist	Requires detailed evaluation	Braking requirements
Crane	Requires detailed evaluation	Regenerative energy
Centrifuge	Requires detailed evaluation	High-inertia deceleration
Small machine	Not recommended	Excessive drive capacity

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28. Energy-Management Advantages

Variable-speed drives can provide energy-management benefits, particularly with variable-torque loads.

For example, a pump may operate at lower speed when the required flow decreases.

A fan may reduce speed when less airflow is required.

This can provide:

• Better process matching.
• Reduced throttling.
• Potential energy savings.
• Reduced mechanical stress.
• Improved process flexibility.

Actual energy savings depend on the load profile, operating hours, motor efficiency and process requirements.

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29. Motor Selection Requirements

The drive should be selected using the complete motor nameplate.

Motor Parameter	Importance
Motor voltage	Must match drive voltage class
Motor current	Critical for drive sizing
Motor power	Must fit applicable duty rating
Motor frequency	Must be compatible
Motor speed	Important for operating range
Motor torque	Important for load suitability
Overload requirement	Determines duty selection
Starting torque	Important for heavy loads
Deceleration	Important for braking
Regenerative energy	Important for high-inertia loads
Motor cable length	Important for installation
Motor insulation	Important for VFD operation
Duty cycle	Important for thermal loading

For this model, the 1,090 A output-current capability should be compared directly with the motor’s full-load current.

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30. Low Duty vs Normal Duty vs Heavy Duty

Duty	Rating	Suitable Load Type
Low Duty	710 kW	Variable-torque applications
Normal Duty	630 kW	General industrial applications
Heavy Duty	500 kW	Higher torque and overload applications

The 710 kW Low Duty rating should not automatically be used for a 710 kW constant-torque machine.

Duty classification exists because the thermal and overload requirements can vary significantly between applications.

For a heavy conveyor, for example, the Heavy Duty rating may be more relevant than the higher Low Duty kW figure.

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31. Electrical Installation Requirements

A 1,090 A drive requires substantial electrical infrastructure.

Installation Item	Consideration
Incoming power	400 VAC three-phase class
Drive current	1,090 A
Motor current	Must remain within applicable rating
Protective devices	Proper coordination required
Power conductors	High-current sizing required
Busbars	High-current capacity required
Grounding	Properly engineered
EMC	Filter and cable routing important
Short-circuit protection	Must be coordinated
Cooling	Adequate ventilation required
Maintenance	Adequate service clearance
Braking	Load inertia must be evaluated
Communication	Match plant automation architecture

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32. Power Cable Considerations

At more than 1,000 A, the incoming and motor power systems require careful engineering.

Important factors include:

• Conductor ampacity.
• Parallel cable arrangements.
• Busbar capacity.
• Cable temperature.
• Cable termination.
• Grounding.
• Short-circuit withstand capability.
• Cable routing.
• EMC considerations.

The exact installation should be designed according to the applicable electrical standards and site requirements.

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33. Motor Cable Considerations

The motor cable system should also be evaluated carefully.

Important parameters include:

• Motor current.
• Cable length.
• Motor insulation.
• Grounding.
• Installation method.
• Ambient temperature.
• Cable grouping.
• EMC requirements.

Long motor cables can introduce additional electrical effects, so the final motor-cable design should be considered as part of the complete drive system.

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34. Cooling and Thermal Management

The Frame 9 drive produces considerable heat.

The electrical room should provide adequate ventilation to remove heat generated by:

• Power electronics.
• DC-bus components.
• Cooling fans.
• Control electronics.
• Other equipment installed nearby.

The cooling system should be included in preventive maintenance.

Air passages should remain clean and unobstructed.

Cooling fans should be inspected periodically.

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35. Advantages of the No-HIM Configuration

Although the lack of a HIM can appear to be a limitation, it can actually be an advantage in some installations.

A no-HIM configuration can be appropriate when:

• The drive is controlled entirely through EtherNet/IP.
• Operators work from a central control room.
• The drive is installed in a restricted-access electrical room.
• Local operator access is not required.
• A standardized cabinet design is preferred.
• The plant uses centralized diagnostics.

The configuration therefore fits well into highly automated facilities.

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36. Advantages of the Filtered Configuration

The filtered configuration can help manage electromagnetic interference within the industrial electrical system.

This is useful where the same electrical environment contains:

• PLC systems.
• Industrial communication equipment.
• Sensors.
• Instrumentation.
• Measurement equipment.
• Other drives.

Correct cable routing and grounding are still required.

Filtering should be considered part of the overall EMC strategy.

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37. Advantages of the PowerFlex 755 Series

The PowerFlex 755 family is designed for applications that require more than simple fixed-speed motor operation.

Major advantages include:

• High-power motor control.
• High-current capacity.
• Industrial networking.
• Process control.
• Flexible control architecture.
• Diagnostic capability.
• Multiple duty ratings.
• Large-frame configurations.
• Integration into automation systems.

This makes the series suitable for large industrial facilities.

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38. Advantages of the 20G11BC1K1AN0NNNNN

Advantage	Practical Benefit
1,090 A output	Supports very large motors
710 kW Low Duty	High capacity for variable-torque loads
630 kW Normal Duty	Suitable for large continuous industrial loads
500 kW Heavy Duty	Supports demanding torque applications
400 VAC class	Common industrial voltage
Frame 9	High-power mechanical platform
600 mm MCC style	Suitable for centralized electrical rooms
Air cooling	Practical thermal architecture
EMC filtering	Helps manage electrical interference
CM jumper removed	Specific grounding/filter configuration
EtherNet/IP	Industrial network integration
No HIM	Suitable for centralized control architectures
DC terminals	Supports the specified input architecture
Large current capacity	Suitable for heavy industrial motors

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39. Main Limitations

The product also has several limitations that should be considered.

First, it is physically large.

A cabinet approximately 2.45 meters high, 1.2 meters wide and 0.6 meters deep requires substantial installation space.

Second, the approximate weight of 1,246 kg requires proper transportation and lifting arrangements.

Third, the main cabinet is IP20 / NEMA Type 1 and therefore requires a protected installation environment.

Fourth, the model does not contain an internal dynamic-braking transistor.

Finally, the model does not include a HIM.

This last point is not necessarily negative, but it means that local operator-interface requirements should be evaluated before selection.

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40. Maintenance Considerations

A high-power drive should be included in a structured preventive-maintenance program.

Important maintenance items include:

• Cooling fans.
• Air passages.
• Cabinet cleanliness.
• Electrical connections.
• Grounding.
• Motor cables.
• Control wiring.
• Network connections.
• Fault history.
• Drive parameters.
• Operating temperature.
• Ventilation.
• Cabinet condition.

Because there is no factory-installed HIM in the AN0 configuration, maintenance personnel may rely more heavily on the plant automation system or an appropriate service interface for local diagnostics.

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41. Commissioning Considerations

Typical commissioning activities include:

1. Verify incoming voltage.
2. Verify motor nameplate information.
3. Enter motor parameters.
4. Confirm motor current.
5. Confirm duty classification.
6. Confirm control mode.
7. Verify speed reference.
8. Check motor direction.
9. Verify acceleration time.
10. Verify deceleration time.
11. Evaluate braking requirements.
12. Verify EtherNet/IP communication.
13. Check alarms.
14. Check fault handling.
15. Test the machine under controlled conditions.
16. Record final operating parameters.

Because this is a large high-power drive, commissioning should be performed by qualified personnel using the applicable installation procedures.

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42. Five Recommended Models from the Same Series

The following models are closely related PowerFlex 755 configurations.

Model	Series	Voltage	Current	Low Duty	Normal Duty	Heavy Duty	Frame	Dimensions / Weight
20G11BC910AN0NNNNN	PowerFlex 755	400 VAC	910 A class	560 kW	500 kW	400 kW	9	Approx. 2453 × 1200 × 600 mm; approx. 1,246 kg
20G11BC1K0AN0NNNNN	PowerFlex 755	400 VAC	1,040 A	630 kW	560 kW	500 kW	9	Approx. 2453 × 1200 × 600 mm; approx. 1,246 kg
20G11BC1K1JN0NNNNN	PowerFlex 755	400 VAC	1,090 A	710 kW	630 kW	500 kW	9	Approx. 2453 × 1200 × 600 mm; approx. 1,246 kg
20G11BC1K2AN0NNNNN	PowerFlex 755	400 VAC	1,175 A class	800 kW	710 kW	560 kW	9	Frame 9; approximately 1,246 kg class
20G11BC1K4AN0NNNNN	PowerFlex 755	400 VAC	Higher-current Frame 9 class	850 kW	800 kW	630 kW	9	Frame 9; configuration dependent

The 20G11BC1K0AN0NNNNN is a natural lower-capacity comparison.

The 20G11BC1K1JN0NNNNN is the closest direct replacement for the subject model.

The larger-current Frame 9 variants are appropriate when the motor requires additional current capacity.

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43. Direct Replacement Recommendation

The most important related model for the 20G11BC1K1AN0NNNNN is:

20G11BC1K1JN0NNNNN

The listed product information identifies this model as the direct replacement for the discontinued AN0 configuration.

The basic relationship is:

Feature	20G11BC1K1AN0NNNNN	20G11BC1K1JN0NNNNN
Series	PowerFlex 755	PowerFlex 755
Voltage	400 VAC	400 VAC
Current	1,090 A	1,090 A
Low Duty	710 kW	710 kW
Normal Duty	630 kW	630 kW
Heavy Duty	500 kW	500 kW
Frame	9	9
Cooling	Air cooled	Air cooled
Main enclosure	IP20 / NEMA Type 1	IP20 / NEMA Type 1
Cabinet depth	600 mm	600 mm
Filtering	Filtered	Filtered
CM jumper	Removed	Installed
Dynamic braking	None	None
HIM	None	None
Approx. weight	1,246 kg	1,246 kg class
Lifecycle	Discontinued	Replacement configuration

The important point is that the replacement is not simply a change in the last character.

The CM-jumper configuration changes from removed to installed, so replacement engineering should verify the grounding and EMC requirements of the complete installation.

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44. Five Same-Series Recommendation Table

Model	Voltage	Current	Low Duty	Normal Duty	Heavy Duty	Frame	Dimensions / Weight
20G11BC910AN0NNNNN	400 VAC	910 A class	560 kW	500 kW	400 kW	9	Approx. 2453 × 1200 × 600 mm; approx. 1,246 kg
20G11BC1K0AN0NNNNN	400 VAC	1,040 A	630 kW	560 kW	500 kW	9	Approx. 2453 × 1200 × 600 mm; approx. 1,246 kg
20G11BC1K1JN0NNNNN	400 VAC	1,090 A	710 kW	630 kW	500 kW	9	Approx. 2453 × 1200 × 600 mm; approx. 1,246 kg
20G11BC1K2AN0NNNNN	400 VAC	1,175 A class	800 kW	710 kW	560 kW	9	Frame 9; approx. 1,246 kg class
20G11BC1K4AN0NNNNN	400 VAC	Higher-current class	850 kW	800 kW	630 kW	9	Frame 9; configuration dependent

These models form a useful progression around the same high-power Frame 9 family.

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45. Five Related Popular Models from the Same Brand

Model	Series	Voltage Class	Current / Power	Frame	Typical Application	Dimensions / Weight
20F1ANF263JN0NNNNN	PowerFlex 753	690 VAC	263 A / 250 kW ND / 200 kW HD	7	Large industrial motor control	Approx. 881.5 × 430 × 349.6 mm; approx. 48 kg
20G11BC910JN0NNNNN	PowerFlex 755	400 VAC	910 A class	9	Large pumps, fans and conveyors	Approx. 2453 × 1200 × 600 mm; approx. 1,246 kg
20G11BF590JN0NNNNN	PowerFlex 755	690 VAC	590 A class	9	Large 690 VAC motors	Frame 9; configuration dependent
20G11BC1K0JN0NNNNN	PowerFlex 755	400 VAC	1,040 A / 630/560/500 kW	9	Large process machinery	Approx. 2453 × 1200 × 600 mm; approx. 1,246 kg
25B-D030N114	PowerFlex 525	480 VAC class	Approx. 30 A class	Compact	Machine-level motor control	Compact frame; configuration dependent

These models represent different levels of the Allen-Bradley PowerFlex range.

The PowerFlex 753 is more appropriate for large industrial applications at a lower power level.

The PowerFlex 755 is the stronger choice for high-power, networked and advanced motor-control applications.

The PowerFlex 525 is a much smaller drive family and is intended for compact machine applications rather than several-hundred-kilowatt motors.

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46. Comparison with 20G11BC1K0AN0NNNNN

The 20G11BC1K0AN0NNNNN is a very close lower-capacity alternative.

Feature	20G11BC1K0AN0NNNNN	20G11BC1K1AN0NNNNN
Series	PowerFlex 755	PowerFlex 755
Voltage	400 VAC	400 VAC
Output current	1,040 A	1,090 A
Low Duty	630 kW	710 kW
Normal Duty	560 kW	630 kW
Heavy Duty	500 kW	500 kW
Frame	9	9
Cabinet depth	600 mm	600 mm
Filtering	Filtered	Filtered
CM jumper	Removed	Removed
Dynamic braking	None	None
HIM	None	None
Approx. weight	1,246 kg	1,246 kg

The key difference is the increased current and Low/Normal Duty capacity of the 20G11BC1K1AN0NNNNN.

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47. Comparison with 20G11BC1K1JN0NNNNN

The 20G11BC1K1JN0NNNNN is the most important comparison because it is the listed direct replacement.

Feature	20G11BC1K1AN0NNNNN	20G11BC1K1JN0NNNNN
Product family	PowerFlex 755	PowerFlex 755
Input voltage	400 VAC	400 VAC
Output current	1,090 A	1,090 A
Low Duty	710 kW	710 kW
Normal Duty	630 kW	630 kW
Heavy Duty	500 kW	500 kW
Frame	9	9
Cooling	Air cooled	Air cooled
Filtering	Yes	Yes
CM jumper	Removed	Installed
Dynamic braking	None	None
HIM	None	None
Cabinet depth	600 mm	600 mm
Approx. weight	1,246 kg	1,246 kg class
Status	Discontinued	Direct replacement

The electrical rating is essentially the same, but the CM-jumper configuration changes.

Therefore, the replacement should be evaluated as a complete electrical configuration rather than simply as a current-equivalent part.

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48. Comparison with 20G11BC1K1JN2NNNNN

Another related configuration is the 20G11BC1K1JN2NNNNN.

Feature	20G11BC1K1AN0NNNNN	20G11BC1K1JN2NNNNN
Voltage	400 VAC	400 VAC
Current	1,090 A	1,090 A class
Low Duty	710 kW	710 kW
Normal Duty	630 kW	630 kW
Heavy Duty	500 kW	500 kW
Frame	9	9
Filtering	Filtered	Filtered
CM jumper	Removed	Installed
HIM	None	Enhanced LCD full-numeric
Main cabinet	IP20 / NEMA Type 1	IP20 / NEMA Type 1
Approx. weight	1,246 kg	1,246 kg class

This model is more appropriate when local operator access is required.

The subject AN0 model is better suited to a centralized control architecture.

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49. Centralized Automation Applications

The no-HIM configuration is particularly suitable for installations where operators do not need to access the drive directly.

For example, a large water-treatment plant may have multiple pumps.

Each drive can be installed in an electrical room.

Operators can control the pumps from a central HMI.

The drive can exchange data with the control system through EtherNet/IP.

This provides a clean separation between:

power equipment

and

operator interface equipment.

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50. Pump Station Example

Consider a large pumping station with several 500–600 kW motors.

Each pump can have its own PowerFlex 755 drive.

The automation system can coordinate the pumps.

When water demand increases, additional pumps can start.

When demand falls, the system can reduce pump speed.

The drives can provide operating data back to the control system.

This architecture can provide:

• Automatic flow control.
• Pressure control.
• Pump sequencing.
• Fault monitoring.
• Centralized diagnostics.
• Adjustable motor speed.

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51. Conveyor System Example

A large conveyor system may contain several high-power motors.

The drives can be networked together.

The automation system can coordinate:

• Start sequence.
• Speed reference.
• Stop sequence.
• Fault response.
• Production speed.
• Conveyor synchronization.

This can be particularly valuable in mining and bulk-material handling.

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52. Fan System Example

Large ventilation systems can also benefit from centralized control.

For example, a large industrial ventilation system may require different airflow levels throughout the day.

The control system can adjust fan speed.

The drive provides motor feedback.

The operator can monitor the system from a central workstation.

This avoids the need for every motor to have a local operator station.

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53. Maintenance Strategy for a No-HIM Drive

Because the model does not include a factory-installed HIM, maintenance planning should take the control architecture into account.

The maintenance team should have access to an appropriate service interface or control-system diagnostic method.

Important information should include:

• Fault history.
• Current.
• Speed.
• Frequency.
• Drive status.
• Motor parameters.
• Communication status.
• Alarm information.

A centralized plant may already provide most of this information through the automation system.

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54. Physical Installation Requirements

The approximately 2453 × 1200 × 600 mm cabinet requires substantial space.

The installation should consider:

• Floor loading.
• Cabinet clearance.
• Door access.
• Transportation route.
• Lifting equipment.
• Cable entry.
• Cable bending radius.
• Ventilation.
• Service access.
• Adjacent equipment.

The approximately 1,246 kg weight also means that lifting and transportation should be planned before delivery.

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55. Environmental Installation

The main cabinet is IP20 / NEMA Type 1.

The installation should therefore be protected from:

• Water.
• Rain.
• Condensation.
• Conductive dust.
• Corrosive materials.
• Excessive oil.
• Excessive vibration.
• Uncontrolled temperature.

The equipment should be installed in an environment appropriate for high-power electrical equipment.

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56. Mechanical and Electrical Advantages

Category	Assessment
High-current capacity	Excellent
High-power capacity	Excellent
Large motor control	Excellent
Pump applications	Excellent
Fan applications	Excellent
Conveyor applications	Excellent
Network integration	Excellent
Centralized control	Excellent
Physical compactness	Poor
Installation simplicity	Moderate to difficult
Transportation	Requires planning
Local HIM	Not included
Internal dynamic braking	Not included
Thermal requirements	High

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57. Product Selection Recommendations

For a motor around 500 kW, the Heavy Duty rating of this drive may be appropriate depending on the load.

For a motor around 630 kW, the Normal Duty rating becomes particularly relevant.

For variable-torque applications where the duty requirements are less demanding, the 710 kW Low Duty rating provides additional capacity.

However, the correct selection should always be based on the motor current and load duty rather than simply selecting a drive based on the highest published kW number.

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58. Key Parameters at a Glance

Parameter	Value
Model	20G11BC1K1AN0NNNNN
Brand	Allen-Bradley
Series	PowerFlex 755
Drive type	Air-Cooled AC Drive
Input	380–480 VAC class
Nominal voltage	400 VAC
Phase	3 phase
Output current	1,090 A
Low Duty	710 kW
Normal Duty	630 kW
Heavy Duty	500 kW
Frame	9
Enclosure	IP20 / NEMA Type 1
Cabinet	600 mm deep MCC style
Cooling	Forced air
Filtering	Yes
CM jumper	Removed
Dynamic braking	No internal transistor
HIM	None
Communication	Embedded EtherNet/IP
Input	AC with precharge
DC terminals	Yes
Dimensions H × W × D	Approx. 2453 × 1200 × 600 mm
Weight (kg)	Approx. 1,246 kg
Lifecycle	Discontinued
Direct replacement	20G11BC1K1JN0NNNNN

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59. Final Product Assessment

The 20G11BC1K1AN0NNNNN is a high-power PowerFlex 755 AC drive designed for large industrial motors.

Its 1,090 A output current, 710 kW Low Duty, 630 kW Normal Duty and 500 kW Heavy Duty ratings place it firmly in the large industrial-drive category.

Its Frame 9 construction provides the physical capacity required for this power range.

The approximately 2453 × 1200 × 600 mm cabinet dimensions and approximately 1,246 kg weight should be considered major installation parameters.

The model’s AN0 configuration is particularly suited to centralized automation systems.

It has no factory-installed HIM, so the drive can be controlled through the plant’s automation architecture rather than requiring a local operator interface.

The filtered configuration with the CM jumper removed is another important characteristic.

This means that the product should not be treated as electrically identical to a similar JN configuration without checking the complete installation requirements.

The embedded EtherNet/IP capability is useful for modern industrial control systems.

Large pumps, fans, conveyors, compressors and process machines can be coordinated from a central control system while the drive remains installed in a protected electrical room.

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60. Final Conclusion

The 20G11BC1K1AN0NNNNN is a large-frame Allen-Bradley PowerFlex 755 AC variable frequency drive intended for high-power industrial motor control.

Its principal electrical characteristics are:

400 VAC

Three-phase

1,090 A

710 kW Low Duty

630 kW Normal Duty

500 kW Heavy Duty

Frame 9

The mechanical configuration is:

IP20 / NEMA Type 1

600 mm deep MCC style

Approximately 2453 × 1200 × 600 mm

Approximately 1,246 kg

The drive is air cooled and uses a filtered configuration with the CM jumper removed.

It also includes an AC input with precharge, DC terminals and embedded EtherNet/IP.

The absence of a HIM makes this configuration particularly suitable for centralized automation systems.

It can be controlled and monitored through a PLC, HMI, SCADA system or industrial Ethernet architecture.

This is especially practical for large plants where the drives are located in dedicated electrical rooms and operators work from a centralized control station.

The model is particularly suitable for:

large water pumps

process pumps

cooling-water systems

large industrial fans

blowers

large conveyors

mining machinery

cement equipment

compressors

industrial ventilation

material-handling equipment

large process machinery

For pumps and fans, variable-speed operation can provide better process matching and potential energy benefits.

For conveyors, crushers and other high-inertia loads, braking requirements need to be evaluated separately because the model does not contain an internal dynamic-braking transistor.

One of the most important points for this specific catalog number is its lifecycle status.

The 20G11BC1K1AN0NNNNN has been discontinued, and the listed direct replacement is 20G11BC1K1JN0NNNNN.

When replacing the older AN0 configuration, the difference in CM-jumper configuration should be carefully reviewed.

The AN0 version has the CM jumper removed, while the corresponding JN0 replacement configuration has the jumper installed.

Therefore, replacement should be treated as an electrical-configuration review rather than simply a part-number substitution.

Overall, the 20G11BC1K1AN0NNNNN is best understood as a high-current, high-power Frame 9 PowerFlex 755 drive for large industrial motor systems, particularly installations using centralized automation and remote operator control.

For applications around the 630 kW Normal Duty range at 400 VAC, where high current capacity and industrial network integration are required, it represents a substantial high-power drive solution.

For new projects, the corresponding replacement configuration should be considered rather than designing around the discontinued AN0 catalog number.