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

Allen-Bradley 20G11BC1K0JN2NNNNN — Detailed Product Specifications, Introduction, Applications, Advantages and Related Model Recommendations

1. Product Overview

The 20G11BC1K0JN2NNNNN is a high-power Allen-Bradley PowerFlex 755 AC drive designed for large industrial motor-control applications.

It is an air-cooled, three-phase variable frequency drive with a 400 VAC input class, 1,040 A output current, and a Frame 9 configuration.

The drive is rated at approximately 630 kW for Low Duty, 560 kW for Normal Duty and 500 kW for Heavy Duty. This places it firmly in the large industrial-drive category and makes it suitable for major pumps, fans, blowers, conveyors, compressors, process machinery, mining equipment and other high-power rotating machinery.

The model is configured as a 600 mm deep MCC-style cabinet, with IP20 / Type 1 protection, forced-air cooling, EMC filtering, an AC input with precharge and DC terminals.

A major feature of this particular catalog number is the JN2 configuration. The J configuration corresponds to filtering with the CM jumper installed, while the 2 identifies the enhanced LCD, full-numeric, handheld/local HIM configuration.

The model also specifies no internal dynamic-braking transistor.

This combination makes the 20G11BC1K0JN2NNNNN a particularly useful configuration when a large motor requires high current capacity, industrial networking and a local operator interface.

---

2. Brand and Product Series

Item	Specification
Brand	Allen-Bradley
Product family	PowerFlex
Product series	PowerFlex 755
Product type	High-Power AC Variable Frequency Drive
Catalog number	20G11BC1K0JN2NNNNN
Drive type	Air-Cooled AC Drive
Input voltage class	400 VAC
Input phase	Three-phase
Output phase	Three-phase
Output current	1,040 A
Low Duty rating	630 kW
Normal Duty rating	560 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 type	AC input with precharge
DC terminals	Included
Filtering	Filtered
CM capacitor configuration	CM jumper installed
Dynamic braking	None / no internal dynamic-braking transistor
HIM	Enhanced LCD, full numeric, handheld/local HIM
Network	Embedded EtherNet/IP
Main application	Large industrial motor control

---

3. Main Technical Parameters

Parameter	Specification
Model	20G11BC1K0JN2NNNNN
Brand	Allen-Bradley
Series	PowerFlex 755
Product category	Industrial AC Variable Frequency Drive
Input voltage	380–480 VAC class
Nominal voltage	400 VAC
Input phase	3 phase
Output phase	3 phase
Output current	1,040 A
Low Duty power	630 kW
Normal Duty power	560 kW
Heavy Duty power	500 kW
Frame size	Frame 9
Cooling	Forced air / air cooled
Input configuration	AC input with precharge
DC terminals	Yes
Enclosure	Type 1
Protection rating	IP20
Cabinet style	MCC style
Cabinet depth	600 mm
EMC filtering	Yes
CM jumper	Installed
Dynamic-braking transistor	None
Operator interface	Enhanced LCD, full numeric, handheld/local HIM
Communication	Embedded EtherNet/IP
Control	Advanced motor-control architecture
Product mounting	Floor-mounted MCC cabinet
Approx. dimensions H × W × D	1200 × 800 × 600 mm
Weight (kg)	Approximately 1,246 kg

The 600 mm deep Frame 9 MCC-style configuration is approximately 1200 mm high × 800 mm wide × 600 mm deep, with an approximate weight of 1,246 kg.

The larger dimensions sometimes associated with Frame 9 PowerFlex 755 equipment refer to configurations that include additional option cabinets. A complete lineup can therefore be substantially larger than the basic drive cabinet itself.

---

4. Product Positioning

The 20G11BC1K0JN2NNNNN belongs to the high-power end of the PowerFlex 755 product family.

It is not intended for small machinery or compact control panels.

Its 1,040 A current capacity and several-hundred-kilowatt power rating place it in applications where the motor itself is a major part of the plant’s production system.

Typical equipment in this category includes:

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

The drive is particularly attractive where the motor must be integrated into a larger automation and control system rather than operated as an isolated motor.

---

5. Electrical Rating

The three principal duty ratings are shown below.

Duty Classification	Power Rating	Typical Load Characteristic
Low Duty	630 kW	Less demanding variable-torque applications
Normal Duty	560 kW	General continuous industrial applications
Heavy Duty	500 kW	More demanding torque and overload applications
Output current	1,040 A	High-power motor applications

The 560 kW Normal Duty rating is particularly important for applications such as large pumps, fans and other relatively stable industrial loads.

The 500 kW Heavy Duty rating is more relevant when the motor has a demanding torque profile or requires greater overload capability.

The 630 kW Low Duty rating provides a higher power capacity where the application does not require the same level of overload performance.

The actual motor selection should always be based on motor nameplate current, duty cycle, torque characteristics and overload requirements rather than simply comparing motor kW with the drive’s published kW rating.

---

6. 1,040 A Output Current

The 1,040 A output-current rating is one of the defining characteristics of this model.

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

A high-current drive requires the complete electrical system to be engineered accordingly.

Important areas include:

• Incoming power distribution.
• Motor cable selection.
• Parallel cable arrangements.
• Protective devices.
• Busbar capacity.
• Grounding.
• Short-circuit protection.
• Thermal management.
• Cabinet ventilation.
• Cable termination.
• Maintenance access.

The 1,040 A rating should therefore be considered as part of a complete high-power electrical system rather than as an isolated specification.

---

7. 400 VAC Three-Phase Configuration

The 20G11BC1K0JN2NNNNN is a 400 VAC three-phase drive configuration.

The 400 VAC class is commonly used in industrial power systems.

The drive receives three-phase AC power and converts it into controlled motor power.

The output frequency and voltage can be adjusted according to the operating requirements of the motor.

This allows the motor to operate at different speeds instead of remaining at one fixed operating point.

For example, a pump can operate at a lower speed when less flow is required.

A fan can reduce speed when less airflow is needed.

A conveyor can operate at different speeds according to production requirements.

A process machine can adjust speed according to material flow or production conditions.

---

8. Air-Cooled Construction

The drive uses an air-cooled architecture.

At several hundred kilowatts and more than 1,000 A, the amount of heat produced by the power electronics is substantial.

The forced-air cooling system is therefore an important part of the overall drive design.

The installation should provide:

• Adequate cooling-air circulation.
• Correct cabinet ventilation.
• Clean air.
• Sufficient service clearance.
• Appropriate room temperature.
• Proper fan operation.
• Regular inspection.
• Appropriate environmental control.

If airflow is restricted, the temperature of internal power components can increase.

For a high-power drive, cooling should be treated as a major design consideration rather than simply a maintenance detail.

---

9. Frame 9 Construction

The drive uses a Frame 9 configuration.

Frame 9 is intended for very high-power applications and uses a large floor-mounted cabinet arrangement.

For the 600 mm deep MCC-style configuration, the basic cabinet is approximately:

1200 mm high × 800 mm wide × 600 mm deep

with an approximate weight of:

1,246 kg.

This is substantial equipment.

Transportation, floor loading, lifting, positioning and service access should all be considered during the project design.

---

10. Dimensions and Weight

Mechanical Parameter	Specification
Frame	Frame 9
Cabinet type	MCC style
Enclosure	IP20 / NEMA Type 1
Height	Approximately 1200 mm
Width	Approximately 800 mm
Depth	600 mm
Dimensions H × W × D	Approximately 1200 × 800 × 600 mm
Weight (kg)	Approximately 1,246 kg
Cooling	Forced air
Mounting	Floor mounted
Cabinet depth	600 mm

The approximately 1,246 kg weight is a cabinet-level reference for the Frame 9 configuration.

The complete installation can become considerably heavier when additional option bays, wiring bays, power-distribution equipment or other cabinets are added.

For transportation and lifting, the final configured weight should always be confirmed before installation.

---

11. IP20 / NEMA Type 1 Enclosure

The drive uses an IP20 / NEMA Type 1 enclosure configuration.

This type of protection is intended for a protected industrial electrical environment.

It is not a weatherproof outdoor enclosure.

The installation should therefore be protected from:

• Direct water.
• Excessive moisture.
• Condensation.
• Conductive dust.
• Corrosive gases.
• Oil contamination.
• Excessive vibration.
• Foreign objects.
• Excessive ambient temperature.

A properly controlled electrical room or suitable industrial cabinet area is normally appropriate.

---

12. EMC Filtering

The 20G11BC1K0JN2NNNNN uses a filtered configuration.

The EMC filter helps reduce conducted electromagnetic interference generated by the switching operation of the power electronics.

This can be particularly useful in large plants where the same electrical environment contains:

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

EMC performance still depends on the complete installation.

Correct grounding, motor-cable routing, control-cable separation and cable termination remain important.

---

13. CM Jumper Installed

The J portion of the catalog number is important because it identifies the filtered configuration with the CM jumper installed.

This is a meaningful electrical configuration detail.

The common-mode capacitor arrangement affects the relationship between the drive, the filter and the plant grounding system.

For this reason, another 1,040 A PowerFlex 755 drive with a different filtering code should not automatically be treated as electrically identical.

When replacing an existing drive, the complete catalog number should be checked.

---

14. Dynamic Braking

The model is configured with no internal dynamic-braking transistor.

This is not necessarily a disadvantage.

For many large pumps and fans, rapid regenerative braking is not required.

In these applications, the motor can normally be decelerated over an appropriate time period.

High-inertia applications require more attention.

When a large rotating machine decelerates, mechanical energy can flow back through the motor into the drive’s DC bus.

Potential solutions can include:

• Longer deceleration time.
• External dynamic braking.
• Regenerative equipment.
• Mechanical braking.
• Controlled coast-down.
• Process-specific braking strategies.

This should be evaluated carefully for conveyors, centrifuges, crushers, lifting equipment and other high-inertia machines.

---

15. Enhanced LCD Full-Numeric HIM

The 2 in the catalog number identifies an enhanced LCD, full-numeric, handheld/local HIM configuration.

This is one of the most useful features distinguishing this model from a no-HIM configuration.

The operator interface can provide access to important operating and diagnostic information.

Typical information includes:

• Drive status.
• Motor speed.
• Output frequency.
• Output current.
• Fault information.
• Alarm information.
• Parameter values.
• Diagnostic information.
• Operating conditions.

For a large Frame 9 drive, local access can be valuable during commissioning and maintenance.

---

16. Handheld / Local Operator Interface

The handheld/local HIM configuration is particularly useful when engineers need to work directly with the drive.

During commissioning, personnel may need to:

• Verify parameters.
• Check motor rotation.
• Confirm current.
• Check output frequency.
• Review fault conditions.
• Adjust control parameters.
• Monitor motor speed.
• Test acceleration and deceleration.

The local interface can therefore reduce dependence on the central automation system during commissioning and maintenance.

---

17. Embedded EtherNet/IP

The PowerFlex 755 architecture includes embedded EtherNet/IP communication.

This allows the drive to be integrated into an industrial automation network.

Typical control information includes:

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

This is especially useful in plants with many large motors.

Instead of controlling each drive independently, the automation system can coordinate several drives as part of one process.

---

18. Advanced Industrial Control

The PowerFlex 755 platform is designed for more than basic speed control.

Depending on the application and configuration, it can support sophisticated motor-control strategies and process-control functions.

These capabilities can be useful for:

• Speed regulation.
• Torque control.
• Process PID.
• Pump pressure control.
• Fan airflow control.
• Conveyor speed control.
• Production-line coordination.
• Motor protection.
• Fault monitoring.

This makes the drive suitable for applications where motor control is an important part of the overall production process.

---

19. PID Process Control

PID control is especially useful in process applications.

For example, consider a large water pump.

The plant may require the pump to maintain a specific pressure.

A pressure sensor measures the actual pressure.

The control system compares the actual pressure with the target value.

The drive then changes motor speed.

If pressure is too low, motor speed can increase.

If pressure is too high, motor speed can decrease.

This creates a continuously adjustable pumping system.

Similar concepts can be used for:

• Flow.
• Pressure.
• Level.
• Airflow.
• Process temperature.

---

20. Main Product Advantages

20.1 High Power Capacity

The first major advantage is the high power capability.

The drive can support:

630 kW Low Duty

560 kW Normal Duty

500 kW Heavy Duty

This makes it suitable for large motors that are beyond the practical range of compact industrial drives.

---

20.2 1,040 A Current Capacity

The 1,040 A output rating provides considerable capacity for large industrial motors.

This makes the drive suitable for major equipment where motor current is the primary sizing criterion.

---

20.3 Advanced Industrial Networking

Embedded EtherNet/IP allows the drive to become part of an industrial automation network.

This is particularly useful for centralized control systems.

---

20.4 Local HIM

The enhanced LCD/full-numeric HIM gives maintenance and commissioning personnel direct access to the drive.

This can make troubleshooting and parameter verification easier.

---

20.5 EMC Filtering

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

This can be valuable in plants with sensitive control and instrumentation equipment.

---

20.6 High-Power MCC Construction

The Frame 9 MCC-style design provides a practical format for centralized industrial electrical installations.

---

20.7 Flexible Application Range

The drive can be used across many industrial applications.

Its strongest application areas include:

• Pumps.
• Fans.
• Blowers.
• Conveyors.
• Compressors.
• Mining machinery.
• Process equipment.
• Material handling.
• Cement equipment.
• Cooling systems.

---

21. Application: Large Water Pumps

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

A pump may not need maximum flow continuously.

With fixed-speed operation, a valve may be used to reduce flow.

With variable-speed operation, the motor itself can be slowed down.

This can provide:

• Better flow control.
• Better pressure regulation.
• Reduced throttling losses.
• Lower mechanical stress.
• Potential energy savings.
• Better response to changing process conditions.

The drive’s process-control capabilities can also be useful when pressure or flow must be maintained automatically.

---

22. Application: Cooling-Water Pumps

Industrial plants often use large pumps for cooling systems.

Examples include:

• Power-generation cooling systems.
• Manufacturing cooling loops.
• Process-water circulation.
• Furnace cooling.
• Heat-exchanger systems.

The required flow can change depending on production conditions.

The drive allows the pump speed to follow the actual cooling requirement.

This can improve process flexibility and reduce unnecessary operation at maximum speed.

---

23. Application: Large Fans

Large industrial fans can consume substantial electrical power.

The 20G11BC1K0JN2NNNNN can adjust motor speed according to the required airflow.

Typical applications include:

• Furnace fans.
• Exhaust fans.
• Mine ventilation.
• Cooling fans.
• Process ventilation.
• Dust collection.
• Industrial air handling.

Fans are particularly suitable for variable-speed operation because airflow demand often changes throughout the production process.

---

24. Application: Large Blowers

Large blowers are commonly used in process industries.

Examples include:

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

The drive can regulate blower speed to match actual process demand.

This can provide better control than operating the blower continuously at a fixed maximum speed.

---

25. Application: Conveyors

Large conveyors can benefit from controlled motor acceleration.

Instead of applying maximum torque immediately, the drive can ramp the motor smoothly.

Potential benefits include:

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

For conveyors with heavy loads, braking requirements should be analyzed carefully because the drive does not contain an internal dynamic-braking transistor.

---

26. Application: Mining Equipment

Mining applications often use large motors.

Possible applications include:

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

The high current capacity of the drive makes it suitable for many large mining motors.

However, mining installations often have special requirements related to dust, vibration, temperature and maintenance.

The electrical installation must therefore be designed according to the actual site environment.

---

27. Application: Cement Plants

Cement production contains many large rotating machines.

Possible applications include:

• Kiln fans.
• Exhaust fans.
• Crushers.
• Conveyors.
• Large pumps.
• Blowers.
• Material-handling systems.

The high-power capability of the PowerFlex 755 makes the 20G11BC1K0JN2NNNNN suitable for many of these applications.

---

28. Application: Compressors

Large compressors can require several hundred kilowatts of motor power.

Variable-speed operation can allow the compressor to respond to process demand.

Potential advantages include:

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

Compressor suitability depends on compressor type and torque characteristics.

---

29. Application Suitability Table

Application	Suitability	Main Reason
Large water pump	Excellent	High power and variable-speed control
Process pump	Excellent	PID and speed control
Cooling-water pump	Excellent	Adjustable flow
Large fan	Excellent	Variable airflow
Large blower	Excellent	Adjustable process output
Conveyor	Excellent	Controlled acceleration and speed
Mining conveyor	Excellent	High-current motor control
Crusher	Very Good	Large motor capacity
Compressor	Very Good	Variable-speed operation
Cement machinery	Very Good	High-power industrial control
Cooling-tower fan	Excellent	Variable-speed airflow
Chilled-water pump	Excellent	Process matching
Hoist	Requires detailed evaluation	Braking and safety requirements
Crane	Requires detailed evaluation	Regenerative energy
Centrifuge	Requires detailed evaluation	High-inertia deceleration
Small machine	Poor	Excessive drive capacity

---

30. Energy Management Advantages

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

Pumps and fans are good examples.

If a process requires less output, the motor speed can be reduced rather than continuously operating at full speed.

Potential benefits include:

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

Actual savings depend on the application.

A variable frequency drive should therefore be evaluated using the actual load profile rather than assuming a fixed energy-saving percentage.

---

31. Motor Selection Considerations

The motor should be selected using both electrical and mechanical characteristics.

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
Rated speed	Determines speed-control requirements
Torque	Determines load suitability
Overload	Determines duty classification
Starting torque	Important for heavy loads
Deceleration	Important for braking
Regenerative energy	Important for high-inertia machines
Cable length	May affect installation requirements
Motor insulation	Important for VFD operation
Duty cycle	Important for thermal loading

The motor’s full-load current should be compared with the drive’s 1,040 A output rating.

---

32. Low Duty, Normal Duty and Heavy Duty

The three duty ratings provide flexibility for different types of machines.

Duty	Rating	Typical Application
Low Duty	630 kW	Variable-torque loads
Normal Duty	560 kW	Pumps, fans and stable industrial loads
Heavy Duty	500 kW	Higher torque and overload applications

For a large centrifugal pump, Normal Duty or Low Duty may often be appropriate depending on the motor and process.

For a heavy conveyor, crusher or similar machine, Heavy Duty may be more appropriate.

The actual application must always be evaluated before final drive selection.

---

33. Electrical Installation Requirements

A 1,040 A drive requires substantial electrical infrastructure.

Important considerations include:

Installation Item	Requirement
Input supply	400 VAC three-phase class
Motor current	Must remain within drive capability
Protective device	Properly coordinated
Power conductors	Sized for actual current
Busbars	Suitable for high current
Grounding	Properly engineered
EMC	Correct filtering and cable routing
Short-circuit rating	Must be coordinated
Cooling	Adequate airflow
Maintenance	Sufficient working space
Braking	Evaluate regenerative energy
Communication	Match plant automation architecture

---

34. Physical Installation

The basic 600 mm deep cabinet is approximately:

1200 mm × 800 mm × 600 mm

The approximate weight is:

1,246 kg

This means that installation planning is important.

The project should consider:

• Transportation route.
• Doorway dimensions.
• Floor loading.
• Lifting equipment.
• Crane capacity.
• Cabinet positioning.
• Service access.
• Cable entry.
• Ventilation.
• Adjacent cabinet spacing.

The final installation can become larger if option cabinets are added.

---

35. Cabinet Ventilation

The high power of the drive means that thermal management is critical.

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

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

The cooling system should be inspected regularly.

Air passages should not be blocked.

Cooling fans should be included in the preventive-maintenance plan.

---

36. Power Cable Considerations

At 1,040 A, the power-distribution system must be carefully designed.

Possible considerations include:

• Parallel conductors.
• Busbar arrangements.
• Cable ampacity.
• Cable temperature.
• Cable termination.
• Grounding.
• Short-circuit withstand capability.
• Cable routing.
• EMC separation.

The exact cable arrangement depends on the installation standard and project design.

---

37. Motor Cable Considerations

The motor cable is also an important part of the drive system.

Consider:

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

Long motor cables can have additional electrical effects and should be evaluated according to the drive and motor installation requirements.

---

38. Operator Interface Advantages

The enhanced LCD full-numeric HIM is especially valuable during commissioning.

A technician can use the local interface to observe:

• Motor speed.
• Output frequency.
• Current.
• Drive status.
• Faults.
• Alarms.
• Parameters.

This can make commissioning easier.

It can also provide a convenient backup method when the main control network is temporarily unavailable.

---

39. Communication Advantages

Embedded EtherNet/IP makes the drive suitable for integration into centralized industrial control systems.

The drive can exchange operating data with:

• PLC systems.
• HMI systems.
• SCADA systems.
• Production-management systems.
• Other networked drives.

This allows the motor-control system to become part of the broader production process.

---

40. Maintenance Advantages

High-power drives are important pieces of plant infrastructure.

If a drive controls a major production pump or conveyor, a drive fault can affect a substantial portion of the production process.

The 20G11BC1K0JN2NNNNN provides useful local and networked diagnostic capabilities.

Potential benefits include:

• Faster troubleshooting.
• Easier fault identification.
• Better operating visibility.
• Easier parameter checking.
• Reduced diagnostic time.
• Better preventive-maintenance planning.

---

41. Five Recommended Models from the Same Series

The following models are useful PowerFlex 755 comparisons around the same high-power range.

Model	Series	Voltage	Current	Low Duty	Normal Duty	Heavy Duty	Frame	Dimensions / Weight
20G11BC910JN2NNNNN	PowerFlex 755	400 VAC	910 A	560 kW	500 kW	400 kW	9	Approx. 1200 × 800 × 600 mm; approx. 1,246 kg
20G11BC1K0JN0NNNNN	PowerFlex 755	400 VAC	1,040 A	630 kW	560 kW	500 kW	9	Approx. 1200 × 800 × 600 mm; approx. 1,246 kg
20G11BC1K0JN2NNNNN	PowerFlex 755	400 VAC	1,040 A	630 kW	560 kW	500 kW	9	Approx. 1200 × 800 × 600 mm; approx. 1,246 kg
20G11BC1K1JN2NNNNN	PowerFlex 755	400 VAC	1,175 A class	710 kW	630 kW	500 kW	9	Frame 9 MCC style; approx. 1,246 kg class
20G11BC1K2JN2NNNNN	PowerFlex 755	400 VAC	1,465 A class	800 kW	710 kW	560 kW	9	Frame 9 MCC style; configuration dependent

The 20G11BC1K0JN0NNNNN is particularly close to the subject model.

Both have the same fundamental current and power class, while the operator-interface configuration differs.

The JN2 version adds the enhanced LCD full-numeric handheld/local HIM.

The 910 A version is useful where the motor current requirement is lower.

The higher-current Frame 9 versions are appropriate for larger motor requirements. The high-power rating relationships for the 1,040 A, 1,090/1,175 A and 1,465 A classes follow the PowerFlex 755 rating structure.

---

42. Five Related Popular Allen-Bradley Models

Model	Series	Voltage Class	Current / Power	Frame	Main Application	Dimensions / Weight
20F1ANF263JN0NNNNN	PowerFlex 753	690 VAC	263 A / 250 kW ND / 200 kW HD	7	Large pumps, fans and conveyors	Approx. 881.5 × 430 × 349.6 mm; approx. 48 kg
20G11BC910JN0NNNNN	PowerFlex 755	400 VAC	910 A class	9	Large industrial motor control	Approx. 1200 × 800 × 600 mm; approx. 1,246 kg
20G11BF590JN0NNNNN	PowerFlex 755	690 VAC	590 A class	9	High-voltage large motors	Frame 9; dimensions configuration dependent
20G11BC1K0JN0NNNNN	PowerFlex 755	400 VAC	1,040 A / 560 kW ND / 500 kW HD	9	Large pumps, fans and process machinery	Approx. 1200 × 800 × 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 cover very different parts of the product range.

The PowerFlex 753 is a strong alternative for general industrial applications where a slightly different control architecture is appropriate.

The PowerFlex 755 is better suited to large and advanced industrial motor-control systems.

The PowerFlex 525 is much smaller and is intended for compact machine applications rather than 500–600 kW motors.

---

43. PowerFlex 753 vs PowerFlex 755

Feature	PowerFlex 753	PowerFlex 755
Product positioning	Industrial AC drive	Advanced industrial AC drive
Large motors	Yes	Yes
High-power Frame 9	Limited	Yes
Industrial networking	Available	Extensive
Advanced control	Good	Excellent
Process control	Very Good	Excellent
Large MCC installations	Available	Strong
Complex automation	Good	Excellent
Large conveyor applications	Good	Excellent
High-power process applications	Very Good	Excellent

The subject 20G11BC1K0JN2NNNNN is positioned toward the high-power and advanced-control end of the PowerFlex product family.

---

44. Comparison with the No-HIM Version

One of the most useful comparisons is between the subject model and the similar 20G11BC1K0JN0NNNNN.

Feature	20G11BC1K0JN0NNNNN	20G11BC1K0JN2NNNNN
Series	PowerFlex 755	PowerFlex 755
Input voltage	400 VAC	400 VAC
Output current	1,040 A	1,040 A
Low Duty	630 kW	630 kW
Normal Duty	560 kW	560 kW
Heavy Duty	500 kW	500 kW
Frame	9	9
Cabinet depth	600 mm	600 mm
Filtering	Filtered	Filtered
CM jumper	Installed	Installed
Dynamic braking	None	None
HIM	No HIM	Enhanced LCD full-numeric handheld/local HIM
Approx. weight	1,246 kg	1,246 kg

The main practical difference is the operator-interface configuration.

The JN0 version is appropriate when the drive does not require the specified local HIM.

The JN2 version is better suited to applications where local commissioning, diagnostics and parameter access are important.

---

45. Why the JN2 Configuration Can Be Attractive

The JN2 configuration combines several useful features:

• 1,040 A output.
• 560 kW Normal Duty.
• 500 kW Heavy Duty.
• 630 kW Low Duty.
• 400 VAC three-phase operation.
• Frame 9 construction.
• EMC filtering.
• CM jumper installed.
• Embedded EtherNet/IP.
• Enhanced LCD HIM.
• Air-cooled architecture.

This combination makes it suitable for a large industrial motor that needs both centralized automation and local access.

---

46. Pump Control Advantages

For a large pump, the JN2 configuration can provide both network control and local access.

The automation system can control the pump during normal production.

The local HIM can then be used by technicians during maintenance and commissioning.

This provides two levels of access:

Centralized control during production

and

Local control and diagnostics during service work

This combination is useful in large industrial plants.

---

47. Fan Control Advantages

For large fans, speed control can be used to match airflow with actual process requirements.

The drive can receive a speed reference through the industrial control network.

Maintenance personnel can still access the drive locally when necessary.

This can be particularly useful for:

• Furnace systems.
• Cooling systems.
• Mine ventilation.
• Process exhaust.
• Large industrial ventilation.

---

48. Conveyor Control Advantages

For a large conveyor, controlled acceleration can reduce mechanical stress.

The drive can gradually increase motor speed.

The automation system can monitor conveyor status.

The local HIM can provide maintenance personnel with direct access to drive information.

This combination can simplify commissioning and troubleshooting.

The braking system still needs to be evaluated carefully for high-inertia conveyors.

---

49. High-Inertia Load Considerations

The absence of an internal dynamic-braking transistor should be considered before using the drive on high-inertia equipment.

Potential high-inertia applications include:

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

During deceleration, the mechanical system may return energy to the drive.

The project should determine whether:

• Deceleration can be made longer.
• External braking is required.
• Regenerative equipment is required.
• Mechanical braking should be used.

---

50. Environmental Requirements

The IP20 / NEMA Type 1 configuration is intended for protected installation.

The surrounding environment should be controlled.

Important factors include:

Environmental Factor	Consideration
Temperature	Must remain within applicable operating limits
Humidity	Avoid condensation
Dust	Avoid conductive dust
Water	Protect from direct water
Corrosive atmosphere	Avoid corrosive chemicals
Vibration	Minimize excessive vibration
Cooling air	Keep clean and unobstructed
Altitude	Apply applicable derating
Maintenance	Keep cooling system clean

---

51. Mechanical Advantages and Limitations

Item	Assessment
Power capacity	Excellent
Current capacity	Excellent
Cabinet construction	Excellent for large industrial systems
Local HIM	Excellent for commissioning
Network integration	Excellent
Pump applications	Excellent
Fan applications	Excellent
Conveyor applications	Excellent
Physical size	Large
Weight	Very high
Small-machine applications	Not suitable
Transportation	Requires planning
Floor loading	Must be checked
Internal dynamic braking	Not included

---

52. Maintenance Planning

A high-power drive should be included in the plant’s preventive-maintenance program.

Important maintenance items include:

• Cooling fans.
• Airflow paths.
• Cabinet cleanliness.
• Electrical connections.
• Grounding.
• Motor cables.
• Control wiring.
• Communication connections.
• Fault history.
• Operating temperature.
• Drive parameters.

The local HIM can be useful during these activities because technicians can access drive information directly.

---

53. Commissioning Considerations

Commissioning a 1,040 A drive should be approached carefully.

Typical commissioning steps include:

1. Verify the incoming voltage.
2. Verify the motor nameplate.
3. Enter the motor parameters.
4. Confirm the motor current.
5. Verify the control mode.
6. Verify the speed reference.
7. Check the motor direction.
8. Confirm acceleration time.
9. Confirm deceleration time.
10. Check braking requirements.
11. Verify network communication.
12. Test alarms and faults.
13. Verify the local HIM.
14. Test the machine under controlled conditions.
15. Record final parameters.

This is particularly important when the drive controls a major production machine.

---

54. Replacement Selection Strategy

If an existing drive must be replaced, the complete catalog number should be compared.

Important parameters include:

Parameter	Check
Input voltage	400 VAC class
Output current	1,040 A
Duty rating	630 / 560 / 500 kW
Frame	Frame 9
Cabinet depth	600 mm
Filtering	Filtered
CM jumper	Installed
Dynamic braking	None
HIM	Enhanced LCD full-numeric
Communication	Embedded EtherNet/IP
DC terminals	Included
Dimensions	Approx. 1200 × 800 × 600 mm
Weight	Approx. 1,246 kg

The complete catalog number is more reliable than comparing only the kW rating.

---

55. Product Advantages at a Glance

Advantage	Practical Benefit
1,040 A output	Supports very large motors
630 kW Low Duty	High capacity for variable-torque loads
560 kW Normal Duty	Suitable for large continuous applications
500 kW Heavy Duty	Supports demanding load conditions
400 VAC	Common industrial voltage class
Frame 9	Designed for high-power applications
600 mm MCC cabinet	Suitable for centralized electrical installations
EMC filtering	Helps manage electrical interference
CM jumper installed	Defined common-mode configuration
Enhanced LCD HIM	Local commissioning and diagnostics
EtherNet/IP	Industrial automation integration
Air cooled	Suitable thermal-management architecture
DC terminals	Supports the specified AC-input/DC-bus configuration
No internal braking transistor	Suitable for applications without rapid regenerative braking

---

56. Five Same-Series Recommendations

Model	Voltage	Current	LD	ND	HD	Frame	Dimensions / Weight
20G11BC910JN2NNNNN	400 VAC	910 A	560 kW	500 kW	400 kW	9	Approx. 1200 × 800 × 600 mm; approx. 1,246 kg
20G11BC1K0JN0NNNNN	400 VAC	1,040 A	630 kW	560 kW	500 kW	9	Approx. 1200 × 800 × 600 mm; approx. 1,246 kg
20G11BC1K0JN2NNNNN	400 VAC	1,040 A	630 kW	560 kW	500 kW	9	Approx. 1200 × 800 × 600 mm; approx. 1,246 kg
20G11BC1K1JN2NNNNN	400 VAC	1,175 A class	710 kW	630 kW	500 kW	9	Frame 9; approximately 1,246 kg class
20G11BC1K2JN2NNNNN	400 VAC	1,465 A class	800 kW	710 kW	560 kW	9	Frame 9; configuration dependent

The closest alternative is the 20G11BC1K0JN0NNNNN.

It shares the same basic electrical rating and cabinet architecture but does not use the JN2 local HIM configuration.

The 20G11BC910JN2NNNNN is a lower-current alternative.

The larger-current versions are intended for motors requiring additional current capacity.

---

57. Five Same-Brand Popular Recommendations

Model	Series	Voltage	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. 1200 × 800 × 600 mm; approx. 1,246 kg
20G11BF590JN0NNNNN	PowerFlex 755	690 VAC	590 A class	9	High-voltage large motor systems	Frame 9; configuration dependent
20G11BC1K0JN0NNNNN	PowerFlex 755	400 VAC	1,040 A / 560 kW ND / 500 kW HD	9	Large process machinery	Approx. 1200 × 800 × 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 cover a wide range of industrial motor applications.

The PowerFlex 753 is useful when a high-power general industrial drive is required.

The PowerFlex 755 is more appropriate for large, advanced and network-integrated industrial motor systems.

The PowerFlex 525 belongs to a much smaller class and is better suited to machine-level applications.

---

58. Recommended Selection by Application

Application Requirement	Recommended Model Direction
500–560 kW motor at 400 VAC	20G11BC1K0JN2NNNNN
Same power but no local HIM	20G11BC1K0JN0NNNNN
Around 400–500 kW and lower current	20G11BC910JN2NNNNN
More than 1,040 A required	Higher-current Frame 9 configuration
690 VAC large motor	PowerFlex 755 690 VAC configuration
Around 200–250 kW industrial motor	PowerFlex 753
Small machine motor	PowerFlex 525
Large pump	PowerFlex 755
Large fan	PowerFlex 755
Large conveyor	PowerFlex 755
High-inertia machine	PowerFlex 755 with separate braking analysis

---

59. Overall Product Assessment

The 20G11BC1K0JN2NNNNN is a high-capacity industrial AC drive designed for large three-phase motors.

Its principal electrical characteristics are:

• 400 VAC nominal input.
• Three-phase operation.
• 1,040 A output current.
• 630 kW Low Duty.
• 560 kW Normal Duty.
• 500 kW Heavy Duty.
• Frame 9.

Its configuration also includes:

• Air cooling.
• IP20 / NEMA Type 1 protection.
• 600 mm deep MCC-style cabinet.
• EMC filtering.
• CM jumper installed.
• No internal dynamic-braking transistor.
• Embedded EtherNet/IP.
• Enhanced LCD full-numeric handheld/local HIM.

These features make the model especially suitable for large industrial installations where the motor must be controlled from both a centralized automation system and a local service interface.

---

60. Final Technical Summary

Key Parameter	Specification
Model	20G11BC1K0JN2NNNNN
Brand	Allen-Bradley
Series	PowerFlex 755
Product type	High-Power AC Variable Frequency Drive
Input voltage	380–480 VAC class
Nominal input	400 VAC
Input phase	3 phase
Output phase	3 phase
Output current	1,040 A
Low Duty	630 kW
Normal Duty	560 kW
Heavy Duty	500 kW
Frame	Frame 9
Cooling	Air cooled / forced air
Enclosure	IP20 / NEMA Type 1
Cabinet style	600 mm deep MCC style
EMC filter	Yes
CM jumper	Installed
Dynamic braking	None
Input type	AC input with precharge
DC terminals	Yes
Network	Embedded EtherNet/IP
HIM	Enhanced LCD, full numeric, handheld/local
Control	Advanced motor control / process control
Dimensions H × W × D	Approximately 1200 × 800 × 600 mm
Weight (kg)	Approximately 1,246 kg

---

61. Final Conclusion

The 20G11BC1K0JN2NNNNN is an Allen-Bradley PowerFlex 755 high-power air-cooled AC drive designed for large industrial motor applications.

Its 1,040 A output capacity, 560 kW Normal Duty rating, 500 kW Heavy Duty rating and 630 kW Low Duty rating make it appropriate for motors operating at several hundred kilowatts.

The Frame 9, 600 mm deep MCC-style cabinet provides a practical format for centralized industrial electrical installations.

Its basic cabinet dimensions are approximately 1200 × 800 × 600 mm, while the approximate equipment weight is 1,246 kg.

The EMC filtered configuration with CM jumper installed is an important part of the electrical configuration.

The enhanced LCD full-numeric handheld/local HIM is one of the strongest practical advantages of the JN2 configuration.

It provides maintenance and commissioning personnel with direct access to drive information without relying exclusively on the plant control system.

The embedded EtherNet/IP capability makes the drive well suited to centralized automation systems.

This combination is particularly valuable in large factories where the drive must simultaneously support:

centralized automation + local commissioning + high-power motor control + process regulation + industrial networking.

The model is especially suitable for large pumps, fans, blowers, conveyors, compressors, mining equipment, cement machinery, cooling systems, process equipment and other large industrial rotating machines.

For pumps and fans, the variable-speed capability can improve process control and may provide significant energy-management benefits when the load varies.

For conveyors, crushers and other high-inertia machinery, the absence of an internal dynamic-braking transistor means that the braking strategy should be evaluated separately.

For replacement projects, the complete catalog number should be compared rather than relying only on the 1,040 A rating.

The most important selection parameters are:

motor voltage, motor full-load current, motor power, duty classification, torque requirements, overload requirements, acceleration, deceleration, regenerative energy, braking requirements, grounding configuration, EMC configuration, cabinet dimensions, weight, communication requirements and operator-interface requirements.

Overall, the 20G11BC1K0JN2NNNNN can be regarded as a large-capacity Frame 9 PowerFlex 755 AC drive for high-power industrial motor control, with the additional advantage of a local enhanced LCD operator interface.

For a 400 VAC industrial motor system in the approximately 500–560 kW Normal Duty range, this model represents a particularly strong fit when local HIM access and industrial network integration are both important.