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Allen-Bradley 20G11BC1K1JN0NNNNN — Detailed Product Specifications, Introduction, Applications, Advantages and Related Model Recommendations

1. Product Overview

The 20G11BC1K1JN0NNNNN is a high-power Allen-Bradley PowerFlex 755 AC drive designed for large industrial motor-control systems.

It is an air-cooled, three-phase variable frequency drive in the 380–480 VAC class, with a nominal 400 VAC input and a rated output current of 1,090 A.

The drive is rated at approximately 710 kW for Low Duty, 630 kW for Normal Duty and 500 kW for Heavy Duty, making it a high-capacity solution for large pumps, fans, conveyors, compressors, blowers and other industrial machinery.

The model uses a Frame 9 construction with an IP20 / NEMA Type 1, 600 mm deep MCC-style enclosure.

It is equipped with an AC input with precharge and DC terminals, forced-air cooling, EMC filtering and a CM jumper installed configuration.

The JN0 configuration does not include a local HIM keypad or display.

This makes the drive particularly suitable for centralized automation architectures where the operator normally works through a PLC, HMI, SCADA system or industrial Ethernet network rather than directly from the drive cabinet.

The product is currently listed as an active configuration, making it different from the older AN0 version that it replaced.

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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	20G11BC1K1JN0NNNNN
Drive type	Air-Cooled AC Drive
Voltage class	380–480 VAC
Nominal input 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 size	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	Installed
Dynamic braking	No internal dynamic-braking transistor
HIM	None / Blank
Communication	Embedded EtherNet/IP
Control characteristic	PID capable
Integrated motion	No
Safety function suitability	Yes
Lifecycle	Active

The catalog description identifies this exact configuration as a PowerFlex 755 air-cooled drive with embedded EtherNet/IP, 1,090 A output, 710/630/500 kW duty ratings, 400 VAC three-phase input, Frame 9 construction, filtering and CM jumper installed.

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3. Main Technical Parameters

Parameter	Specification
Model	20G11BC1K1JN0NNNNN
Brand	Allen-Bradley
Series	PowerFlex 755
Product category	Industrial AC Variable Frequency Drive
Input voltage	380–480 VAC
Nominal voltage	400 VAC
Input frequency	50/60 Hz
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
Approximate HP equivalent	850 HP class
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	Installed
Dynamic braking	None
Internal braking transistor	None
HIM	None / Blank
Network	Embedded EtherNet/IP
Control characteristic	PID
Integrated motion	No
Safety suitability	Yes
Operating temperature	Approximately -20 to 60 °C
Storage temperature	Approximately -40 to 70 °C
Approx. dimensions	Frame 9 / 600 mm deep MCC-style configuration; exact H × W should be verified from the project drawing
Weight (kg)	Approximately 1,246.47 kg

The 1,090 A, 630 kW Normal Duty, 500 kW Heavy Duty, 400 VAC and Frame 9 ratings are consistently identified for this model. The available product information also identifies IP20 protection, EMC capability, PID control, no dynamic-braking transistor and no keypad.

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4. Dimensions and Weight

Because this is a Frame 9, 600 mm deep MCC-style drive, the physical size is substantially larger than standard cabinet-mounted variable frequency drives.

The published configuration identifies the cabinet depth as 600 mm.

The exact overall height and width should be taken from the applicable mechanical drawing for the particular cabinet arrangement, because Frame 9 packaged-drive assemblies can include different cabinet arrangements and options.

For practical planning, the most reliable confirmed physical figures are the 600 mm cabinet depth and approximately 1,246.47 kg equipment weight.

Mechanical Parameter	Specification
Frame	Frame 9
Enclosure	IP20 / NEMA Type 1
Cabinet style	MCC style
Cabinet depth	600 mm
Mounting	Floor-mounted / cabinet installation
Cooling	Forced air
Height	Configuration dependent — verify project dimension drawing
Width	Configuration dependent — verify project dimension drawing
Depth	600 mm
Dimensions H × W × D	Exact H × W should be confirmed from the selected Frame 9 mechanical drawing; D = 600 mm
Weight (kg)	Approximately 1,246.47 kg

For purchasing, installation and transportation planning, it is better to use the final mechanical drawing rather than relying on a generic Frame 9 dimension.

The weight of approximately 1.25 metric tons is particularly important when planning lifting, transportation, floor loading and cabinet positioning.

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5. Product Introduction

The 20G11BC1K1JN0NNNNN is designed to control very large three-phase AC motors.

A conventional motor starter essentially provides the motor with a fixed electrical supply.

A variable frequency drive takes a different approach.

It controls the electrical frequency and voltage supplied to the motor, allowing motor speed and torque to be adjusted according to the requirements of the machine.

For a large industrial motor, this can provide much better control over acceleration, operating speed and process output.

The PowerFlex 755 family is intended for applications where motor control needs to be integrated with a broader industrial automation system.

The 20G11BC1K1JN0NNNNN is particularly suited to installations where the drive itself is located in an electrical room and operators control the equipment from a central HMI or control system.

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6. Product Positioning

This model belongs to the high-power section of the PowerFlex 755 family.

The 1,090 A output rating is the most obvious indication of its intended application range.

This is not a compact machine-level drive.

It is a large industrial power-control system designed for motors in the several-hundred-kilowatt range.

The combination of:

• 400 VAC operation.
• 1,090 A output.
• 710 kW Low Duty.
• 630 kW Normal Duty.
• 500 kW Heavy Duty.
• Frame 9 construction.

makes it suitable for large industrial processes.

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7. Duty Ratings Explained

The drive has three important power ratings.

Duty	Rating	General Application
Low Duty	710 kW	Variable-torque / less demanding overload applications
Normal Duty	630 kW	General industrial applications
Heavy Duty	500 kW	Higher torque and overload applications

The 710 kW Low Duty rating is particularly useful for variable-torque loads.

The 630 kW Normal Duty rating is suitable for many general industrial applications.

The 500 kW Heavy Duty rating is important for machinery requiring greater torque and overload capability.

The duty category should not be selected solely according to motor kW.

The motor’s full-load current, torque characteristics, acceleration requirements and overload cycle should all be considered.

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8. 1,090 A Output Current

The 1,090 A output current is one of the defining characteristics of the 20G11BC1K1JN0NNNNN.

At this current level, the drive is intended for large industrial motors.

When selecting a drive, motor nameplate current is usually more useful than motor horsepower alone.

For example, two motors with similar kW ratings can have different full-load currents because of differences in:

• Voltage.
• Efficiency.
• Power factor.
• Speed.
• Motor design.
• Operating temperature.
• Duty cycle.

For this reason, the final selection should always compare the actual motor nameplate current with the appropriate drive rating.

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9. 400 VAC Three-Phase Operation

The model is designed for the 380–480 VAC input range, with 400 VAC as the nominal voltage.

The input is three phase.

This voltage class is common in industrial power-distribution systems.

The drive receives the incoming AC power and converts it into controlled electrical power for the motor.

The result is adjustable motor speed and controlled acceleration and deceleration.

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10. 540 VDC Class DC Bus

The drive’s product information identifies a 400 VAC / approximately 540 VDC electrical class.

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

Incoming AC power is converted to DC, and the DC bus then feeds the inverter section that produces controlled AC output for the motor.

The DC bus also becomes important when considering deceleration and regenerative energy.

When a large motor slows down, the motor can temporarily return energy to the drive.

This is why high-inertia applications require a separate braking analysis.

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11. Frame 9 Construction

The drive uses Frame 9 construction.

This is a large industrial cabinet platform.

The Frame 9 structure provides the physical space required for:

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

The 600 mm deep MCC-style enclosure is intended for large electrical installations rather than compact machine panels.

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12. IP20 / NEMA Type 1 Enclosure

The main drive enclosure is IP20 / NEMA Type 1.

This means the drive should be installed in a protected electrical environment.

It should not be treated as a weatherproof outdoor enclosure.

The installation should be protected from:

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

A properly designed electrical room is much more appropriate for this type of equipment.

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13. 600 mm Deep MCC-Style Cabinet

The 600 mm cabinet depth is an important mechanical specification.

Large high-current drives require more physical space than small variable frequency drives.

The cabinet must accommodate:

• Power connections.
• High-current conductors.
• Cooling airflow.
• Electrical components.
• Control equipment.
• Service clearances.

The 600 mm depth also makes the drive suitable for integration into larger MCC-style electrical lineups.

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14. Air-Cooled Design

The drive is air cooled using forced air.

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

The cooling system is therefore an important part of the installation.

The surrounding electrical room should provide sufficient ventilation and suitable ambient conditions.

Important factors include:

• Airflow.
• Temperature.
• Dust level.
• Fan condition.
• Cabinet clearance.
• Air inlet conditions.
• Heat rejection.

Regular inspection of cooling fans and air passages is recommended as part of preventive maintenance.

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15. Filtered Configuration

The 20G11BC1K1JN0NNNNN uses a filtered configuration.

Filtering helps manage high-frequency electrical noise generated by power-electronic switching.

This can be valuable in industrial facilities where the same electrical environment contains:

• PLCs.
• Sensors.
• Instrumentation.
• Industrial computers.
• Communication systems.
• Other variable frequency drives.
• Measurement equipment.

The filter is one part of the EMC design.

Correct grounding, shielding, cable routing and installation practices remain important.

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16. CM Jumper Installed

The J configuration identifies the filtered configuration with the CM jumper installed.

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

For example, an otherwise similar AN0 configuration uses the CM jumper removed.

Therefore, these two catalog numbers should not automatically be treated as electrically identical.

The CM configuration can influence common-mode behavior and the relationship between the drive, filter and grounding system.

For replacement projects, the complete catalog number should always be checked.

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17. No Internal Dynamic-Braking Transistor

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

For many applications this is perfectly acceptable.

Large pumps and fans, for example, may not require rapid braking.

They can often be allowed to decelerate gradually.

However, applications with high rotational inertia may require additional braking equipment.

Examples include:

• Large conveyors.
• Crushers.
• Centrifuges.
• Large rotating drums.
• High-inertia fans.
• Certain material-handling systems.

During deceleration, the motor can return energy to the drive DC bus.

The braking design should therefore be evaluated based on the actual machine.

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18. No HIM Configuration

The JN0 configuration does not include a local HIM.

This is an important feature of the model.

It means the drive is naturally suited to centralized automation.

Operators can work from:

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

The drive itself can remain inside an electrical room.

This arrangement is common in large industrial facilities where local drive operation is not required.

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19. Embedded EtherNet/IP

The PowerFlex 755 platform provides embedded EtherNet/IP capability.

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

Typical information exchanged can include:

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

For a large facility with many drives, this network capability can simplify centralized monitoring and coordination.

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20. Centralized Control Architecture

The no-HIM configuration can be particularly attractive when the drive is part of a centralized control architecture.

For example, a large water-treatment facility may have multiple 500–600 kW pumps.

Each drive can be installed inside a dedicated electrical room.

Operators can control the pumps from a central HMI.

The automation system can monitor:

• Motor current.
• Motor speed.
• Pump status.
• Drive faults.
• Process pressure.
• Flow.

This creates a centralized system in which the drive provides the power-control layer while the automation system provides the operator interface.

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21. Application — Large Water Pumps

Large water pumps are a strong application for this drive.

A pump does not necessarily need to operate at full speed all the time.

The drive can adjust motor speed according to the required flow or pressure.

Potential benefits include:

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

For large pumping stations, centralized EtherNet/IP control can also provide coordinated pump sequencing.

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22. Application — Process Pumps

Industrial process plants frequently require precise control of liquid flow.

The drive can vary motor speed according to process demand.

Potential applications include:

• Process-water pumps.
• Cooling-water pumps.
• Transfer pumps.
• Feedwater pumps.
• Circulation pumps.
• Industrial liquid-handling systems.

The ability to combine high-power motor control with centralized networking makes the PowerFlex 755 suitable for large process installations.

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23. Application — Cooling-Water Systems

Cooling systems often contain large pumps.

The drive can adjust pump speed according to cooling demand.

Potential applications include:

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

Variable-speed operation allows the pump to respond to actual process demand instead of continuously operating at maximum speed.

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24. Application — Large Industrial Fans

Large industrial fans can require several hundred kilowatts.

The drive can control fan speed according to required airflow.

Typical applications include:

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

Variable-speed control can provide better airflow regulation than a fixed-speed motor arrangement.

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25. Application — Blowers

Large blowers are used in many industrial processes.

Potential applications include:

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

The drive can adjust blower speed to match process demand.

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26. Application — Conveyors

Large conveyors can benefit from controlled acceleration and adjustable speed.

Instead of applying full speed immediately, the drive can gradually accelerate the motor.

Potential benefits include:

• Reduced belt stress.
• Reduced gearbox shock.
• Reduced coupling stress.
• Smoother material movement.
• Adjustable production speed.
• Better coordination between conveyor sections.

For high-inertia conveyors, braking requirements must be evaluated separately.

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27. Application — Mining Equipment

Mining equipment frequently uses very large electric motors.

Potential applications include:

• Long conveyors.
• Crushers.
• Large pumps.
• Mine ventilation.
• Material handling.
• Ore-processing machinery.

The high current rating of the 20G11BC1K1JN0NNNNN makes it suitable for large motor systems.

Environmental factors such as dust, vibration and temperature should be considered separately during project design.

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28. Application — Cement and Heavy Industry

Cement and heavy-industry plants contain many large rotating machines.

Potential applications include:

• Large process fans.
• Crushers.
• Conveyors.
• Pumps.
• Blowers.
• Material-handling systems.
• Process ventilation.

The Frame 9 PowerFlex 755 architecture is appropriate for applications where motor power and current requirements are beyond the range of compact drives.

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29. Application — Compressors

Large compressors can require motors in the several-hundred-kilowatt range.

A variable-speed drive can allow compressor speed to follow process demand.

Potential benefits include:

• Adjustable compressor output.
• Controlled acceleration.
• Better process matching.
• Reduced mechanical stress.
• Potential energy savings.

The final suitability depends on compressor design, torque characteristics and operating cycle.

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30. Application Suitability Table

Application	Suitability	Main Benefit
Large water pump	Excellent	Variable flow and pressure 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 control
Compressor	Very Good	Variable-speed operation
Cement machinery	Very Good	Large motor capacity
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 capacity

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31. Energy-Saving Potential

Variable frequency drives can offer significant energy-management opportunities when used with variable-torque loads.

Large pumps and fans are typical examples.

When the process requires less output, motor speed can be reduced instead of continuously operating at maximum speed.

Potential benefits include:

• Lower energy consumption.
• Reduced throttling losses.
• Better process matching.
• Reduced mechanical stress.
• Improved process flexibility.

Actual energy savings depend on the motor, load curve, operating hours and process conditions.

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32. Motor Selection

The motor should be matched to the drive using the complete motor nameplate.

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

For this model, the motor full-load current should be checked carefully against the 1,090 A drive rating.

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33. Low Duty, Normal Duty and Heavy Duty Selection

Duty	Power	General Load Type
Low Duty	710 kW	Variable-torque / less demanding loads
Normal Duty	630 kW	General industrial loads
Heavy Duty	500 kW	High-torque / overload applications

A common mistake is to select the drive only by motor kW.

For example, a 500 kW pump and a 500 kW conveyor can have completely different torque requirements.

The drive should therefore be selected according to the complete load profile.

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34. Electrical Installation Requirements

A 1,090 A drive requires substantial electrical infrastructure.

Installation Item	Requirement
Incoming supply	400 VAC three-phase class
Output 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	Proper engineering required
EMC	Filtering and cable routing important
Short-circuit protection	Must be coordinated
Cooling	Adequate ventilation required
Maintenance	Sufficient service space required
Braking	Load inertia should be evaluated
Communication	Plant network compatibility required

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35. Power Cable Considerations

At approximately 1,090 A, the incoming power system is a major engineering consideration.

The installation may require:

• High-current cable systems.
• Parallel conductors.
• Busbar systems.
• High-current cable terminations.
• Proper grounding.
• Short-circuit protection.
• Thermal calculations.
• EMC considerations.

The final conductor arrangement should be determined according to applicable electrical standards and project conditions.

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36. Motor Cable Considerations

Motor cables should also be carefully selected.

Important factors include:

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

Long motor cables can have additional electrical effects.

The cable system should therefore be treated as part of the complete VFD installation.

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37. Thermal Management

The drive produces significant heat during operation.

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

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

Cooling fans should be inspected regularly.

Air passages should remain clean.

The room temperature should remain within the applicable operating range.

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38. Operating Temperature

Available product data identifies an operating-temperature range of approximately -20 to 60 °C, with storage temperatures of approximately -40 to 70 °C.

For high-power installations, ambient temperature has a direct relationship with thermal performance.

A design operating near the upper temperature limit requires greater attention to:

• Ventilation.
• Cooling airflow.
• Cabinet temperature.
• Drive loading.
• Installation altitude.
• Continuous-duty conditions.

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39. Advantages of the No-HIM Configuration

The lack of a local HIM is not necessarily a disadvantage.

In a centralized automation system, it can actually be useful.

Advantages include:

• Centralized operation.
• Reduced local operator hardware.
• Cleaner control-room architecture.
• Easy integration with PLC systems.
• Remote monitoring.
• Remote fault management.
• Standardized operation across multiple drives.

This configuration is particularly suitable when the drive is installed in an electrical room that is not intended to be a normal operator location.

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40. Advantages of Embedded EtherNet/IP

The integrated communication capability allows the drive to become part of the automation network.

This can provide:

• Centralized start/stop control.
• Speed reference control.
• Status monitoring.
• Fault monitoring.
• Alarm monitoring.
• Process feedback.
• Remote diagnostics.

For large facilities with many drives, this can simplify overall system architecture.

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41. Advantages of the PowerFlex 755 Series

The PowerFlex 755 family is designed for advanced industrial motor-control applications.

Major strengths include:

• High-power capability.
• High-current Frame 9 configurations.
• Industrial Ethernet integration.
• Advanced motor control.
• PID control capability.
• Diagnostic functions.
• Safety-function compatibility.
• Flexible control architecture.
• Large range of power ratings.
• Suitability for pumps, fans and conveyors.

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42. Advantages of the 20G11BC1K1JN0NNNNN

Advantage	Practical Value
1,090 A output	Suitable for very large motors
710 kW Low Duty	High variable-torque capacity
630 kW Normal Duty	Strong general-purpose industrial capacity
500 kW Heavy Duty	Suitable for demanding torque applications
400 VAC	Common industrial voltage class
Frame 9	High-power mechanical platform
600 mm deep MCC style	Suitable for large electrical rooms
Air cooled	Practical high-power cooling system
Filtered	Helps manage electrical interference
CM jumper installed	Defined common-mode configuration
Embedded EtherNet/IP	Easy automation integration
No HIM	Well suited to centralized control
AC input with precharge	Suitable high-power input architecture
DC terminals	Supports the specified drive configuration
Safety-function suitability	Useful in advanced automation systems
PID capability	Useful for process-control applications

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43. Main Limitations

The product is powerful, but it is not intended for every motor application.

The first limitation is physical size.

A Frame 9, 600 mm deep MCC-style drive requires substantial electrical-room space.

The second limitation is weight.

At approximately 1,246.47 kg, the equipment requires proper transportation and lifting planning.

The third limitation is the IP20 / NEMA Type 1 enclosure.

The main cabinet should be installed in a protected electrical environment.

The fourth consideration is braking.

Because there is no internal dynamic-braking transistor, high-inertia applications may require an external braking or regenerative solution.

The fifth consideration is the absence of a local HIM.

For centralized control this is an advantage, but for machines requiring local operator access, another HIM configuration may be more appropriate.

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44. Maintenance Advantages

A centralized control architecture can simplify routine monitoring.

The automation system can provide information such as:

• Drive status.
• Motor current.
• Motor speed.
• Frequency.
• Fault condition.
• Alarm condition.
• Communication status.
• Process feedback.

Maintenance personnel can therefore diagnose many problems without requiring a permanent local keypad.

For major service work, an appropriate service interface and maintenance procedure should still be available.

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45. Commissioning

A typical commissioning sequence may include:

1. Verify incoming voltage.
2. Verify motor nameplate information.
3. Confirm motor current.
4. Confirm motor power.
5. Select the correct duty classification.
6. Enter motor parameters.
7. Confirm control mode.
8. Verify speed reference.
9. Check motor direction.
10. Verify acceleration.
11. Verify deceleration.
12. Evaluate braking requirements.
13. Configure EtherNet/IP communication.
14. Test start/stop commands.
15. Test speed reference.
16. Check alarms.
17. Check faults.
18. Test the motor under controlled conditions.
19. Verify process response.
20. Record final parameters.

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46. Five Recommended Same-Series Models

The following models are useful comparisons within the PowerFlex 755 high-power family.

Model	Series	Voltage	Current	Low Duty	Normal Duty	Heavy Duty	Frame	Dimensions / Weight
20G11BC910JN0NNNNN	PowerFlex 755	400 VAC	910 A class	560 kW	500 kW	400 kW	9	600 mm deep MCC style; weight configuration dependent
20G11BC1K0JN0NNNNN	PowerFlex 755	400 VAC	1,040 A	630 kW	560 kW	500 kW	9	600 mm deep MCC style; approximately 1,246 kg class
20G11BC1K1JN0NNNNN	PowerFlex 755	400 VAC	1,090 A	710 kW	630 kW	500 kW	9	600 mm deep MCC style; approximately 1,246 kg
20G11BC1K2JN2NNNNN	PowerFlex 755	400 VAC	1,175 A class	800 kW	710 kW	560 kW	9	600 mm deep MCC style; configuration dependent
20G11BC1K4JN2NNNNN	PowerFlex 755	400 VAC	Higher-current Frame 9 class	850 kW	800 kW	630 kW	9	600 mm deep MCC style; configuration dependent

The 20G11BC1K0JN0NNNNN is the most logical lower-capacity comparison.

The 20G11BC1K1JN0NNNNN is the subject model.

The larger Frame 9 models are useful when additional motor current or power capacity is required.

The duty ratings and frame progression are consistent with the PowerFlex 755 high-power selection structure.

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47. Five Related Same-Brand Popular Models

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	600 mm deep MCC style; configuration dependent
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	600 mm deep MCC style; approximately 1,246 kg class
25B-D030N114	PowerFlex 525	480 VAC class	Approx. 30 A class	Compact	Machine-level motor control	Compact frame; configuration dependent

These five models represent substantially different application levels.

The PowerFlex 753 is suitable for large industrial motors but generally at a lower power level than the Frame 9 PowerFlex 755.

The PowerFlex 755 high-power models are much more appropriate for large pumps, fans, conveyors and process equipment.

The PowerFlex 525 is a compact drive family and is intended for much smaller machinery.

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48. Comparison with 20G11BC1K0JN0NNNNN

The 20G11BC1K0JN0NNNNN is one of the closest lower-rated alternatives.

Feature	20G11BC1K0JN0NNNNN	20G11BC1K1JN0NNNNN
Series	PowerFlex 755	PowerFlex 755
Input 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
Cooling	Air cooled	Air cooled
Filtering	Filtered	Filtered
CM jumper	Installed	Installed
Dynamic braking	None	None
HIM	None	None
Cabinet depth	600 mm	600 mm
Approx. weight	Approx. 1,246 kg class	Approx. 1,246 kg

The 20G11BC1K1JN0NNNNN provides additional Low Duty and Normal Duty capacity while retaining the same general Frame 9 platform.

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49. Comparison with 20G11BC1K1JN2NNNNN

The 20G11BC1K1JN2NNNNN is another related configuration.

Feature	20G11BC1K1JN0NNNNN	20G11BC1K1JN2NNNNN
Series	PowerFlex 755	PowerFlex 755
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	Installed	Installed
HIM	None	Enhanced LCD configuration
Cabinet depth	600 mm	600 mm
Main enclosure	IP20 / NEMA Type 1	IP20 / NEMA Type 1
Approx. weight	Approx. 1,246 kg	Approx. 1,246 kg class

The main reason to select a HIM-equipped version is the need for local operator and maintenance access.

The JN0 configuration is better suited to centralized control.

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50. Comparison with the Older AN0 Configuration

The preceding model 20G11BC1K1AN0NNNNN is particularly relevant because the JN0 configuration replaced it.

Feature	20G11BC1K1AN0NNNNN	20G11BC1K1JN0NNNNN
Series	PowerFlex 755	PowerFlex 755
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
Filtering	Filtered	Filtered
CM jumper	Removed	Installed
Dynamic braking	None	None
HIM	None	None
Cabinet depth	600 mm	600 mm
Main enclosure	IP20 / NEMA Type 1	IP20 / NEMA Type 1
Lifecycle	Discontinued	Active

The older AN0 model was discontinued and replaced by the JN0 configuration.

The most obvious catalog-number change is the A-to-J filtering/common-mode configuration.

This should be considered during replacement engineering.

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51. Why the JN0 Configuration Is Important

The JN0 configuration is particularly useful for industrial systems where the drive is not intended to be an operator workstation.

It provides:

• High-current motor control.
• High-power capability.
• Industrial network communication.
• Centralized monitoring.
• Centralized operation.
• Filtered electrical configuration.
• Large Frame 9 construction.
• No unnecessary local display.

This makes it a natural fit for large automated plants.

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52. Pump Station Example

Imagine a pumping station containing several large motors.

Each motor can be controlled by a PowerFlex 755 drive.

The drives can communicate with the central control system.

The control system can:

• Start and stop pumps.
• Adjust pump speed.
• Monitor current.
• Monitor speed.
• Monitor faults.
• Coordinate multiple pumps.
• Maintain pressure.
• Maintain flow.

The drives remain in the electrical room while operators work from the central control station.

This is exactly the type of architecture where a no-HIM configuration can make sense.

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53. Conveyor System Example

A large material-handling system may contain multiple high-power conveyor motors.

Each drive can receive speed commands through the automation network.

The control system can coordinate the conveyors.

For example:

• Conveyor 1 starts first.
• Conveyor 2 starts after Conveyor 1 reaches operating speed.
• Conveyor 3 follows.
• If a downstream conveyor faults, upstream conveyors can be stopped.

This type of coordination is much easier when the drives are integrated into the same automation architecture.

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54. Large Fan System Example

A large industrial ventilation system may need different airflow levels throughout the production cycle.

The control system can adjust fan speed according to:

• Temperature.
• Pressure.
• Airflow.
• Production rate.
• Process demand.

The drive can provide motor feedback to the control system.

This allows the fan to operate as part of the process rather than as a simple fixed-speed motor.

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55. Process Control Advantages

The PowerFlex 755 platform’s PID capability can be valuable in process applications.

For example, a pump can be controlled according to pressure.

A fan can be controlled according to airflow or pressure.

A blower can be controlled according to process demand.

The drive can adjust motor speed to help maintain the desired process variable.

This can reduce the amount of external control hardware required for some applications.

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56. Communication and Diagnostics

EtherNet/IP integration can provide a useful diagnostic layer.

The control system can monitor:

• Running status.
• Speed.
• Current.
• Frequency.
• Faults.
• Alarms.
• Drive state.
• Process information.

This can improve troubleshooting.

For a large industrial plant, centralized diagnostics can save considerable maintenance time compared with manually checking every drive.

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57. Safety and Control-System Integration

Available technical information identifies the drive as suitable for safety functions.

This does not mean that the complete machine automatically becomes a safety-rated system.

The machine-level safety architecture still needs to be designed correctly.

Depending on the application, this can involve:

• Safe Torque Off.
• Safety PLC.
• Emergency-stop architecture.
• Guarding.
• Interlocks.
• Safe speed functions.
• Risk assessment.

The drive is one component of the overall safety system.

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58. Maintenance Planning

A high-power Frame 9 drive should have a structured maintenance plan.

Important inspection areas include:

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

The absence of a HIM means that the maintenance team should ensure that an appropriate diagnostic method is available through the control system or service interface.

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59. Transportation and Installation

At approximately 1,246.47 kg, the drive is heavy industrial equipment.

Transportation planning should consider:

• Delivery access.
• Floor loading.
• Forklift capacity.
• Crane capacity.
• Lifting points.
• Cabinet dimensions.
• Door openings.
• Turning radius.
• Electrical-room access.
• Final positioning.

The installation team should not assume that the drive can be moved using ordinary material-handling equipment.

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60. Floor and Cabinet Planning

A Frame 9 drive requires a properly prepared installation location.

The design should consider:

• Floor strength.
• Cabinet alignment.
• Cable entry.
• Cable bending radius.
• Front service access.
• Cooling airflow.
• Adjacent cabinet spacing.
• Maintenance access.
• Emergency access.

The final mechanical drawing should always be used for detailed construction planning.

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61. Environmental Considerations

The main enclosure is IP20 / NEMA Type 1.

This means the installation environment should be controlled.

The drive should be protected against:

• Direct water.
• Rain.
• Condensation.
• Conductive contamination.
• Corrosive gases.
• Excessive dust.
• Excessive vibration.
• Uncontrolled temperature.

For mining, cement and other dusty environments, the electrical-room design becomes especially important.

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62. Advantages and Limitations Summary

Category	Assessment
Power capacity	Excellent
Output current	Excellent
Large motor control	Excellent
Pump applications	Excellent
Fan applications	Excellent
Conveyor applications	Excellent
Process applications	Excellent
EtherNet/IP integration	Excellent
Centralized control	Excellent
PID control	Very Good
Local operator interface	Not included
Internal dynamic braking	Not included
Physical size	Very large
Weight	Very high
Installation complexity	High
Thermal requirements	High
Small-machine suitability	Poor

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63. Recommended Selection Process

Step 1 — Check Motor Voltage

Confirm that the motor is suitable for the 400 VAC drive class.

Step 2 — Check Motor Current

Compare the motor nameplate current with the 1,090 A drive rating.

Step 3 — Check Motor Power

Confirm the motor power against the correct duty classification.

Step 4 — Determine Load Type

Identify whether the load is variable torque, constant torque or high overload.

Step 5 — Evaluate Braking

Determine whether the machine requires rapid deceleration or regenerative braking.

Step 6 — Check Communication

Confirm that EtherNet/IP fits the automation architecture.

Step 7 — Check Local Interface Requirements

Because this model has no HIM, determine whether operators need local access.

Step 8 — Check Mechanical Space

Confirm the Frame 9 cabinet arrangement and 600 mm depth.

Step 9 — Check Weight

Allow for approximately 1,246.47 kg.

Step 10 — Check Environment

Ensure the electrical room is appropriate for an IP20 / NEMA Type 1 drive.

Step 11 — Check Cooling

Verify ventilation and heat-rejection requirements.

Step 12 — Verify the Complete Catalog Number

Do not select the drive solely by kW or current.

The complete catalog number determines important configuration details.

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64. Key Specification Table

Parameter	Value
Model	20G11BC1K1JN0NNNNN
Brand	Allen-Bradley
Series	PowerFlex 755
Product type	High-Power AC Variable Frequency Drive
Input voltage	380–480 VAC
Nominal input voltage	400 VAC
Input frequency	50/60 Hz
Input phase	3 phase
Output phase	3 phase
Output current	1,090 A
Low Duty	710 kW
Normal Duty	630 kW
Heavy Duty	500 kW
Frame	9
Cooling	Air cooled / forced air
Main enclosure	IP20 / NEMA Type 1
Cabinet style	MCC style
Cabinet depth	600 mm
Filtering	Yes
CM jumper	Installed
Dynamic braking	None
Internal braking transistor	None
HIM	None
Network	Embedded EtherNet/IP
Control characteristic	PID
Integrated motion	No
Safety suitability	Yes
Operating temperature	Approximately -20 to 60 °C
Storage temperature	Approximately -40 to 70 °C
Dimensions	Frame 9 / 600 mm deep; exact H × W configuration-dependent
Weight (kg)	Approximately 1,246.47 kg
Lifecycle	Active

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65. Final Technical Assessment

The 20G11BC1K1JN0NNNNN is a substantial industrial AC drive designed for large motors and demanding process equipment.

Its main electrical specification can be summarized as:

400 VAC / 3 phase / 1,090 A / 710 kW LD / 630 kW ND / 500 kW HD

This combination gives the drive enough capacity for a wide range of large industrial applications.

The Frame 9 construction and 600 mm deep MCC-style cabinet make it suitable for large electrical rooms and MCC-based installations.

The air-cooled architecture provides a practical cooling method for a drive of this power level.

The filtered configuration with CM jumper installed is another important characteristic.

The drive is designed to operate as part of a larger industrial electrical and automation system rather than as an isolated motor controller.

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66. Why This Model Is a Strong Choice

The biggest advantage of the 20G11BC1K1JN0NNNNN is the combination of very high current capacity and centralized control capability.

The drive can handle a 1,090 A motor-control requirement while providing the communication capability needed for modern automation.

It is particularly well suited to:

large water pumps

process pumps

large fans

industrial blowers

large conveyors

compressors

mining machinery

cement equipment

cooling systems

industrial ventilation

material-handling equipment

large process machinery

The no-HIM configuration is especially useful when the plant already has a centralized operator interface.

Instead of placing a keypad on every drive, the plant can use a common control architecture.

This can simplify operation and make the overall system easier to standardize.

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67. Final Conclusion

The 20G11BC1K1JN0NNNNN is a high-power Allen-Bradley PowerFlex 755 AC variable frequency drive designed for large industrial motor applications.

Its core electrical specifications are:

400 VAC

Three phase

1,090 A output

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

Air cooled

Approximately 1,246.47 kg

The exact overall height and width should be confirmed from the applicable Frame 9 mechanical drawing before final installation planning, while the 600 mm cabinet depth and approximately 1,246 kg weight are useful planning figures.

The drive uses EMC filtering with the CM jumper installed.

It also uses an AC input with precharge and DC terminals.

There is no internal dynamic-braking transistor and no factory-installed HIM.

This particular configuration therefore makes especially good sense in a centralized industrial automation environment.

The drive can be controlled through the plant’s PLC and HMI architecture, while EtherNet/IP can provide status, commands, process information and diagnostics.

For large pumps and fans, variable-speed control can provide better process matching and potential energy savings.

For conveyors, crushers and other high-inertia machinery, the braking system should be evaluated independently.

The model is also important as a replacement for the older 20G11BC1K1AN0NNNNN configuration.

The newer JN0 version retains the high-power electrical class while using the CM jumper installed configuration.

Overall, the 20G11BC1K1JN0NNNNN can be described as a high-current, high-power, Frame 9 PowerFlex 755 drive for large industrial motor systems, with strong network integration and centralized-control capability.

For a large 400 VAC motor system in the approximate 500–630 kW operating range, particularly where the plant requires high current, industrial Ethernet communication and centralized operation, this model is a strong high-power drive solution.