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Allen-Bradley 20G11BC1K2JN2NNNNN — Detailed Product Specifications, Product Introduction, Applications, Advantages, Series Information and Related Model Recommendations

1. Product Overview

The 20G11BC1K2JN2NNNNN is a high-power Allen-Bradley PowerFlex 755 AC Drive designed for large industrial motor-control applications.

It belongs to the PowerFlex 755 family and is part of the 755 AC Packaged Drive range. The unit is an air-cooled, high-current variable-frequency drive intended for demanding industrial installations where large three-phase motors require controlled speed, torque, acceleration and deceleration.

The model is rated for 400 V AC, three-phase operation and has an output-current rating of 1,175 A. Its published duty ratings include 710 kW Normal Duty and 560 kW Heavy Duty, with the corresponding Light Duty capacity reaching approximately 800 kW for this power class. The drive is a Frame 9 design with a 600 mm deep MCC-style enclosure.

The JN2 configuration is particularly useful when a local operator interface is required. Compared with the JN0 no-HIM configuration, the JN2 version is intended for installations where technicians or operators benefit from a local enhanced display and keypad interface.

The product is currently listed as an active configuration.

2. Brand and Product Series

Item	Specification
Model	20G11BC1K2JN2NNNNN
Brand	Allen-Bradley
Product family	PowerFlex
Series	PowerFlex 755
Product category	AC Variable Frequency Drive
Sub-family	755 AC Packaged Drive
Drive type	Air-Cooled AC Drive
Application class	High-power industrial motor control
Frame	Frame 9
Input voltage	400 V AC
Input phase	3-phase
Output current	1,175 A
Normal Duty rating	710 kW
Heavy Duty rating	560 kW
Light Duty rating	Approximately 800 kW
Enclosure class	IP20 / Type 1
Cabinet style	600 mm Deep MCC Style
Cooling	Air cooled / forced air
Input configuration	AC input with precharge
DC bus terminals	Available in this configuration
EMC configuration	Filtered
CM jumper	Installed
Dynamic braking	None
Local operator interface	Enhanced LCD / Full Numeric HIM
Communication	Embedded EtherNet/IP
Product status	Active

3. Complete Technical Parameter Table

Parameter	Specification
Model	20G11BC1K2JN2NNNNN
Brand	Allen-Bradley
Series	PowerFlex 755
Product family	PowerFlex 750-Series
Product type	PowerFlex 755 AC Packaged Drive
Construction	Air cooled
Input voltage	400 VAC class
Nominal supply	400 VAC
Input phase	3 phase
Input frequency	50/60 Hz
Output phase	3 phase
Rated output current	1,175 A
Light Duty power	Approximately 800 kW
Normal Duty power	710 kW
Heavy Duty power	560 kW
Frame size	Frame 9
Enclosure	IP20 / Type 1
Cabinet style	600 mm Deep MCC Style
Cooling	Forced air / air cooled
Input type	AC input with precharge
DC terminals	Yes
EMC filter	Yes
CM jumper	Installed
Dynamic braking	None
Local display	Enhanced LCD
Local keypad	Full Numeric HIM
Communication	Embedded EtherNet/IP
Control	Speed / torque / process-oriented motor control
Installation	Industrial electrical room / MCC
Typical motor range	Large industrial motors
Depth	600 mm
Overall dimensions	Frame 9 MCC-style configuration; exact height and width depend on the applicable mechanical arrangement
Weight (kg)	Approximately 1,246 kg class
Product status	Active

4. Electrical Performance

The most important specification of the 20G11BC1K2JN2NNNNN is its very high output-current capability.

With a rated output current of 1,175 A, this drive is designed for very large motors and industrial loads. It is not intended to compete with compact machine-level drives. Instead, it belongs to the high-power industrial drive category.

The published power ratings are approximately 800 kW Light Duty, 710 kW Normal Duty and 560 kW Heavy Duty. The 710 kW Normal Duty and 560 kW Heavy Duty values are directly associated with the published 1,175 A configuration.

This distinction between duty ratings is important when selecting the drive.

A motor should not be selected solely according to its nominal kW rating. Motor nameplate current, overload requirements, load torque, acceleration time, operating speed, duty cycle and process conditions all have to be considered.

5. 400 V AC Three-Phase Design

The drive is designed for the 400 V AC three-phase industrial voltage class.

This makes it suitable for many industrial power systems where large motors operate from approximately the 400 V class.

The three-phase design is intended for industrial AC motors and allows the drive to control motor frequency and voltage according to the selected operating strategy.

Typical installations can include large:

• Pumps.
• Fans.
• Blowers.
• Conveyors.
• Process machines.
• Material-handling systems.
• Water-treatment equipment.
• Mining equipment.
• Cement equipment.
• Industrial ventilation systems.
• Large compressors.

6. 1,175 A Output Current

The 1,175 A output rating places this model in a very high-power class.

At this current level, the electrical installation needs considerably more planning than a conventional small VFD installation.

Particular attention should be given to:

• Incoming power capacity.
• Protective devices.
• Cable sizing.
• Motor cable termination.
• Grounding.
• Short-circuit coordination.
• Cabinet ventilation.
• Heat dissipation.
• Cable bending radius.
• Maintenance clearance.
• Electrical-room layout.
• Equipment transportation.

The drive’s high current rating is one of its primary advantages, but it also means that the complete electrical system must be engineered accordingly.

7. Power Rating and Duty Selection

Duty	Approximate Power Rating	Typical Consideration
Light Duty	800 kW	Suitable for applicable variable-torque or less demanding loads
Normal Duty	710 kW	Suitable for many continuous industrial loads
Heavy Duty	560 kW	Suitable where higher overload capability is required

The actual application should determine which rating is appropriate.

For example, a large centrifugal pump may have a substantially different torque requirement from a loaded conveyor.

A fan application may have a different overload profile from a crusher.

Therefore, the correct selection method is to compare the drive’s current and duty capability against the motor’s actual nameplate and load requirements.

8. Frame 9 Construction

The Frame 9 design is intended for high-power industrial installations.

Compared with smaller PowerFlex frames, Frame 9 provides the physical scale required for:

• High-current power conversion.
• Large power semiconductor assemblies.
• DC bus components.
• Cooling systems.
• High-current terminals.
• Control electronics.
• Communication hardware.
• Large electrical connections.

The Frame 9 construction also explains why this is a substantial piece of industrial equipment rather than a small wall-mounted VFD.

9. 600 mm Deep MCC-Style Enclosure

The published mechanical configuration identifies the unit as a 600 mm deep MCC-style enclosure.

This dimension should be taken seriously during installation planning.

The installer must consider:

• Cabinet depth.
• Front access.
• Cable-entry requirements.
• Cable-bending radius.
• Door swing.
• Adjacent cabinets.
• Ventilation.
• Maintenance access.
• Lifting access.
• Floor loading.

The 600 mm dimension is a key mechanical characteristic, but it should not be mistaken for the complete overall enclosure size.

10. Dimensions

Because this is a Frame 9 packaged-drive configuration, the exact overall height and width should be taken from the applicable mechanical drawing for the supplied configuration.

The catalog information establishes the 600 mm depth for this configuration.

Mechanical Parameter	Specification
Model	20G11BC1K2JN2NNNNN
Frame	Frame 9
Enclosure style	Type 1 / IP20
Cabinet style	MCC style
Depth	600 mm
Overall height	Configuration-dependent
Overall width	Configuration-dependent
Installation orientation	Industrial cabinet / MCC arrangement
Cooling arrangement	Forced air
Mechanical drawing	Required for final installation dimensions
Service clearance	Must be established during installation engineering

For a project with strict space limitations, it is better to use the final product drawing rather than estimate the height and width.

This is particularly important when replacing an existing high-power drive or integrating the unit into a pre-existing MCC lineup.

11. Weight

The 20G11BC1K2JN2NNNNN should be treated as heavy industrial electrical equipment.

For preliminary engineering and logistics planning, a value of approximately 1,246 kg, or about 1.25 metric tons, is a reasonable weight class for this Frame 9 configuration.

Weight Information	Value
Model	20G11BC1K2JN2NNNNN
Equipment class	Heavy industrial
Approximate weight (kg)	1,246 kg class
Approximate metric tons	1.25 metric tons
Transportation	Heavy equipment handling
Floor loading	Must be checked
Lifting	Appropriate lifting equipment required
Shipping weight	May differ depending on packaging and configuration

The approximate value should be used for preliminary planning only.

For transportation, lifting and structural calculations, the final equipment documentation should be used.

12. Product Introduction

The 20G11BC1K2JN2NNNNN is designed to control large three-phase AC motors by regulating the electrical power supplied to the motor.

In a conventional direct-on-line system, the motor is essentially connected directly to the electrical supply and operates according to the fixed frequency of the power system.

A variable-frequency drive changes that relationship.

The drive can adjust motor speed and operating characteristics according to the requirements of the process.

A simplified system can be represented as:

Three-Phase AC Supply → PowerFlex 755 → Large AC Motor → Mechanical Load

The automation system provides the desired operating command.

The drive translates that command into controlled motor operation.

13. Role of the Local HIM

One of the most noticeable differences between the 20G11BC1K2JN2NNNNN and a JN0 configuration is the operator-interface arrangement.

The JN2 configuration is intended for a local Enhanced LCD / Full Numeric HIM arrangement.

This is useful when personnel need to work directly at the drive.

For example, during commissioning, a technician may need to:

• Check motor parameters.
• Review drive status.
• Examine alarms.
• Read fault information.
• Adjust operating parameters.
• Verify speed commands.
• Confirm output frequency.
• Check current.
• Perform local testing.

14. Advantages of the JN2 Configuration

The local HIM can be particularly useful in plants where the drive is installed in an electrical room and maintenance personnel need immediate access to the drive.

It reduces dependence on a remote HMI for basic commissioning and troubleshooting activities.

This can be valuable during:

• Initial startup.
• Motor replacement.
• Troubleshooting.
• Parameter verification.
• Maintenance.
• Functional testing.
• Communication troubleshooting.
• Commissioning after a plant shutdown.

15. Local Operation Versus Centralized Operation

A large industrial plant may use several different control philosophies.

One facility may prefer completely centralized operation.

Another may want technicians to have local access.

The JN2 configuration supports the second approach more naturally.

A typical arrangement can be:

Control Room HMI

↓

PLC / Automation Controller

↓

EtherNet/IP

↓

PowerFlex 755

↓

Large Motor

while the technician can also access the drive locally through the HIM when necessary.

16. Embedded EtherNet/IP

The PowerFlex 755 platform is designed for integration into modern industrial control architectures.

Its embedded Ethernet capability allows the drive to communicate with a plant automation system.

This can simplify integration with:

• PLC systems.
• HMI systems.
• SCADA systems.
• Industrial Ethernet networks.
• Supervisory systems.
• Maintenance systems.

The PowerFlex 755 platform is specifically designed for integration with automation controllers and supports applications involving speed, torque and positioning control.

17. Control Capabilities

The PowerFlex 755 family is intended for applications requiring advanced motor control.

Depending on the system configuration and selected control method, applications can involve:

• Speed control.
• Torque control.
• Process control.
• Position-related control.
• Closed-loop feedback.
• Networked control.

The platform also supports additional option modules for applications requiring additional feedback, I/O, safety, communications or auxiliary control power.

18. EMC-Filtered Configuration

The model uses a filtered configuration with the CM jumper installed.

EMC considerations are particularly important for high-power variable-frequency drives.

The high-frequency switching associated with a VFD can affect the electrical environment if the installation is not designed correctly.

A complete EMC installation should consider:

• Motor cable construction.
• Shielding.
• Grounding.
• Cable routing.
• Control-cable routing.
• Communication-cable routing.
• Cabinet bonding.
• Motor grounding.
• Cable length.

The drive’s internal filtering is therefore only one part of the overall EMC design.

19. Dynamic Braking

The 20G11BC1K2JN2NNNNN configuration is specified without an internal dynamic-braking transistor.

This is suitable for many large industrial applications where the load does not require rapid braking.

For example, a large centrifugal pump may naturally coast down after the drive reduces output frequency.

A large fan can behave similarly.

However, high-inertia or fast-stop applications require additional evaluation.

Examples include:

• High-speed conveyors.
• Hoisting equipment.
• Certain centrifuges.
• High-inertia rotating equipment.
• Some material-handling machines.

The braking requirement should therefore be evaluated from the actual load inertia and required stopping time.

20. Main Applications

The large current and power capability of this model make it suitable for many industrial applications.

The most common application categories include:

• Water pumping.
• Wastewater treatment.
• Large ventilation.
• Process fans.
• Blowers.
• Conveyors.
• Mining equipment.
• Cement plants.
• Material handling.
• Industrial process machinery.
• Large compressors.
• Cooling-water systems.

21. Application — Large Pumps

Large pumps are one of the most practical applications for this drive.

Possible applications include:

• Raw-water pumps.
• Cooling-water pumps.
• Process-water pumps.
• Transfer pumps.
• Wastewater pumps.
• Irrigation pumps.
• Pipeline pumps.
• Industrial circulation pumps.

The drive allows the pump motor speed to be adjusted according to process demand.

This can provide much better process flexibility than simply switching a motor on and off.

22. Application — Water Treatment

Large water-treatment facilities often contain many high-power pumps and blowers.

The drive can be used in:

• Water intake systems.
• Water-transfer stations.
• Aeration systems.
• Sludge handling.
• Process-water circulation.
• High-capacity pumping.

The local HIM is useful during commissioning because technicians can access the drive directly while testing pumps and motors.

23. Application — Fans and Blowers

Large fans and blowers are also suitable applications.

Examples include:

• Industrial exhaust fans.
• Furnace fans.
• Cooling fans.
• Dust-collection fans.
• Mine ventilation fans.
• Process-air blowers.
• Aeration blowers.
• Large building ventilation systems.

For centrifugal fan applications, reducing speed can substantially change the mechanical power requirement.

This makes variable-speed operation particularly useful where airflow demand changes during production.

24. Application — Conveyors

Large conveyors can have significant starting torque and mechanical inertia.

The drive can provide controlled acceleration rather than immediately applying full-speed operation.

Potential benefits include:

• Reduced belt shock.
• Reduced gearbox stress.
• Reduced coupling stress.
• Smoother acceleration.
• Better material handling.
• Improved process coordination.

Large mining conveyors and bulk-material conveyors are examples where controlled motor operation can be valuable.

25. Application — Mining

The 1,175 A output capability makes this drive suitable for certain large mining systems.

Potential applications include:

• Ore conveyors.
• Dewatering pumps.
• Ventilation fans.
• Material-handling systems.
• Processing equipment.
• Large auxiliary machinery.

Mining applications require careful environmental engineering because dust, temperature, vibration and maintenance conditions can be more severe than in a conventional factory.

26. Application — Cement Plants

Cement and aggregate facilities use many large motors.

Potential applications include:

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

The PowerFlex 755 platform is especially useful where several large motors need to be integrated into a centralized automation system.

27. Application — Industrial Cooling Systems

Large factories and process plants often use cooling-water systems with substantial pump motors.

The drive can regulate pump speed according to actual cooling requirements.

Potential benefits include:

• Improved flow regulation.
• Controlled starting.
• Reduced mechanical stress.
• Better process stability.
• Improved coordination between production and cooling systems.

28. Application — Compressors

Large compressors can also require high-power variable-speed motor control.

Potential applications include:

• Industrial air compressors.
• Process compressors.
• Utility compressors.
• Gas-handling systems.
• Large refrigeration-related systems.

Compressor selection requires particular attention to torque characteristics, operating speed range and process control requirements.

29. Application — Industrial Ventilation

Large industrial buildings may require very high airflow.

The drive can control:

• Supply fans.
• Exhaust fans.
• Cooling fans.
• Dust-extraction fans.
• Process-air fans.
• Tunnel ventilation systems.

When airflow requirements change, variable-speed control provides greater flexibility than fixed-speed motor operation.

30. Major Product Advantages

Advantage	Description
High current capability	1,175 A output for very large motors
High power capacity	Up to approximately 800 kW Light Duty
Normal Duty rating	710 kW
Heavy Duty rating	560 kW
Frame 9 construction	Designed for large industrial equipment
400 VAC class	Suitable for common industrial power systems
Air cooling	Suitable for appropriately engineered electrical rooms
600 mm MCC configuration	Suitable for large electrical lineups
EtherNet/IP	Supports networked automation
Local HIM	Useful for commissioning and maintenance
EMC filtering	Supports improved electrical compatibility
AC precharge	Appropriate for high-power DC-bus architecture
PowerFlex platform	Broad industrial application capability
High scalability	Related models cover different current classes
Centralized or local control	Flexible control architecture

31. Advantage — High-Power Motor Control

The primary advantage of the 20G11BC1K2JN2NNNNN is its ability to control very large motors.

The 1,175 A rating provides substantial current capacity while the PowerFlex 755 architecture provides more advanced control functionality than a basic VFD.

This makes the model appropriate for large industrial equipment where both power and control flexibility matter.

32. Advantage — Local Commissioning

The JN2 configuration provides a major practical benefit during commissioning.

A technician can work directly at the drive instead of relying entirely on a remote control system.

This can make troubleshooting easier when:

• The PLC is not yet commissioned.
• Network communication is not yet established.
• The motor is being tested for the first time.
• Parameters need to be verified.
• Faults need to be investigated locally.

33. Advantage — Automation Integration

The PowerFlex 755 platform is designed for integration into larger automation architectures.

A plant can combine:

• PLC control.
• Drive control.
• HMI monitoring.
• SCADA supervision.
• Ethernet communication.
• Local drive operation.

This combination is particularly useful for large process plants.

34. Advantage — Standardized Platform

Another important benefit is platform standardization.

A plant may use different PowerFlex 755 ratings for different motors while maintaining a similar control philosophy.

For example:

20G11BC910

↓

20G11BC1K0

↓

20G11BC1K1

↓

20G11BC1K2

↓

20G11BC1K5

The electrical capacity changes, but the general PowerFlex 755 family remains familiar to engineering and maintenance personnel.

35. Advantage — Flexible Application Range

The PowerFlex 755 family is designed for applications ranging from conventional speed control to more sophisticated torque and positioning requirements.

The platform supports applications up to approximately 1,500 kW / 2,000 HP, depending on configuration and application requirements.

This gives the product family considerable flexibility for large industrial machinery.

36. Advantage — Maintenance Accessibility

For maintenance personnel, having a local display can be convenient.

The technician can review drive status and parameters while standing near the equipment.

This is especially useful when checking:

• Motor current.
• Output frequency.
• Drive status.
• Fault codes.
• Alarm conditions.
• Operating parameters.
• Start/stop commands.
• Speed reference.
• Communication status.

37. Environmental and Installation Considerations

The enclosure is specified as IP20 / Type 1.

This means the drive should normally be installed in an appropriately protected electrical environment.

The installation should protect the equipment from:

• Direct water.
• Rain.
• Severe dust.
• Chemical contamination.
• Excessive humidity.
• Uncontrolled outdoor exposure.

The surrounding electrical room should provide suitable environmental conditions.

38. Cooling Requirements

Because this is a high-power air-cooled drive, thermal management is critical.

The installation should maintain adequate airflow around the equipment.

Maintenance should include inspection of:

• Cooling fans.
• Air passages.
• Ventilation openings.
• Cabinet cleanliness.
• Dust accumulation.
• Electrical-room temperature.
• Cooling performance.

A high-power drive should not be installed in a room where heat accumulation cannot be controlled.

39. Electrical Installation Requirements

Before installation, engineers should verify:

• Supply voltage.
• Supply frequency.
• Available fault current.
• Protective-device coordination.
• Motor current.
• Motor voltage.
• Cable size.
• Cable length.
• Grounding.
• Shielding.
• Motor insulation.
• EMC requirements.
• Control wiring.
• Network wiring.

40. Motor Selection

The motor should be selected based on actual motor current and load characteristics.

Motor Parameter	Importance
Motor voltage	Must match the drive voltage class
Motor current	Primary drive-sizing parameter
Motor kW	General capacity reference
Motor frequency	Establishes operating base
Motor speed	Determines operating range
Motor torque	Determines load compatibility
Starting torque	Important for heavy loads
Overload requirement	Determines duty selection
Acceleration time	Influences current requirement
Deceleration time	Influences braking requirements
Duty cycle	Influences thermal loading
Cable length	Influences installation and EMC
Motor insulation	Important for VFD applications

41. Recommended Same-Series Models

The following models are useful alternatives within the PowerFlex 755 family.

Model	Series	Voltage	Current / Power	Frame	Depth	HIM Configuration	Weight (kg)
20G11BC910JN0NNNNN	PowerFlex 755	400 VAC	~910 A / 500 kW ND	9	600 mm	No HIM	~1,250
20G11BC1K0JN0NNNNN	PowerFlex 755	400 VAC	~1,040 A / 560 kW ND	9	600 mm	No HIM	~1,250
20G11BC1K1JN0NNNNN	PowerFlex 755	400 VAC	~1,090 A / 630 kW ND	9	600 mm	No HIM	~1,250
20G11BC1K2JN0NNNNN	PowerFlex 755	400 VAC	1,175 A / 710 kW ND	9	600 mm	No HIM	~1,246
20G11BC1K5JN2NNNNN	PowerFlex 755	400 VAC	1,480 A / 850 kW ND	9	600 mm	Enhanced LCD / Full Numeric	Configuration dependent

The models above are useful because they maintain the same general PowerFlex 755 high-power architecture while providing different current and power levels.

The 20G11BC1K2 class is the direct capacity reference for the product being discussed.

42. Recommended Model 1 — 20G11BC910JN0NNNNN

The 20G11BC910JN0NNNNN is a lower-capacity Frame 9 PowerFlex 755 configuration.

Parameter	Specification
Model	20G11BC910JN0NNNNN
Series	PowerFlex 755
Voltage	400 VAC class
Current class	Approximately 910 A
Normal Duty	Approximately 500 kW
Heavy Duty	Approximately 400 kW
Frame	9
Cooling	Air cooled
Enclosure	IP20 / Type 1
Cabinet	600 mm MCC style
HIM	No HIM
Depth	600 mm
Dimensions	Frame 9; exact height and width configuration dependent
Weight (kg)	Approximately 1,250 kg class

This is a reasonable alternative when the motor’s current requirement is below the 1,175 A range.

43. Recommended Model 2 — 20G11BC1K0JN0NNNNN

The 20G11BC1K0JN0NNNNN provides a step between the 910 A and 1,175 A classes.

Parameter	Specification
Model	20G11BC1K0JN0NNNNN
Series	PowerFlex 755
Voltage	400 VAC class
Current class	Approximately 1,040 A
Normal Duty	Approximately 560 kW
Heavy Duty	Approximately 500 kW
Frame	9
Cooling	Air cooled
Enclosure	IP20 / Type 1
Cabinet	600 mm MCC style
HIM	No HIM
Depth	600 mm
Dimensions	Frame 9; exact height and width configuration dependent
Weight (kg)	Approximately 1,250 kg class

This model is useful where the motor is smaller than the 1,175 A capacity but still belongs to the high-power category.

44. Recommended Model 3 — 20G11BC1K1JN0NNNNN

The 20G11BC1K1JN0NNNNN is particularly close to the target product.

Parameter	Specification
Model	20G11BC1K1JN0NNNNN
Series	PowerFlex 755
Voltage	400 VAC class
Current class	Approximately 1,090 A
Light Duty	Approximately 710 kW
Normal Duty	Approximately 630 kW
Heavy Duty	Approximately 500 kW
Frame	9
Cooling	Air cooled
Enclosure	IP20 / Type 1
Cabinet	600 mm MCC style
HIM	No HIM
Depth	600 mm
Dimensions	Frame 9; exact height and width configuration dependent
Weight (kg)	Approximately 1,250 kg class

This is a useful alternative for applications requiring slightly less current capacity.

45. Recommended Model 4 — 20G11BC1K2JN0NNNNN

The 20G11BC1K2JN0NNNNN has essentially the same major power class as the target JN2 configuration but uses a no-HIM arrangement.

Parameter	Specification
Model	20G11BC1K2JN0NNNNN
Series	PowerFlex 755
Voltage	400 VAC
Output current	1,175 A
Light Duty	Approximately 800 kW
Normal Duty	710 kW
Heavy Duty	560 kW
Frame	9
Cooling	Air cooled
Enclosure	IP20 / Type 1
Cabinet	600 mm MCC style
HIM	None
Depth	600 mm
Dimensions	Frame 9; exact height and width configuration dependent
Weight (kg)	Approximately 1,246 kg class

This is one of the best alternatives when the electrical capacity needs to remain the same but a local HIM is not required.

46. Recommended Model 5 — 20G11BC1K5JN2NNNNN

The 20G11BC1K5JN2NNNNN moves into a higher current and power class.

Parameter	Specification
Model	20G11BC1K5JN2NNNNN
Series	PowerFlex 755
Voltage	400 VAC
Output current	1,480 A
Normal Duty	850 kW
Heavy Duty	710 kW
Frame	9
Cooling	Air cooled
Enclosure	IP20 / Type 1
Cabinet	600 mm MCC style
HIM	Enhanced LCD / Full Numeric
Depth	600 mm
Dimensions	Frame 9; exact height and width configuration dependent
Weight (kg)	Configuration dependent; approximately 1,250 kg class

This model is worth considering when the motor current is above the 1,175 A capacity of the target drive.

The published data for the 1K5 configuration identifies a 1,480 A class with 850 kW Normal Duty and 710 kW Heavy Duty capability.

47. Five Same-Brand Popular or Related Models

For a broader product comparison, the following models are useful reference points across the same brand and related industrial drive families.

Model	Series	Voltage Class	Current / Power Class	Main Application	Dimensions	Weight (kg)
20G11BC1K2JN4NNNNN	PowerFlex 755	400 VAC	1,175 A / 710 kW ND	Large motors with local interface	600 mm deep MCC style	~1,246
20G11BC1K5JN2NNNNN	PowerFlex 755	400 VAC	1,480 A / 850 kW ND	Higher-power industrial motors	600 mm deep MCC style	Configuration dependent
21G11BC1K2JN2NNNNN-ND-L1-P3	PowerFlex 755 Packaged	400 VAC	1,175 A / 710 kW ND	Packaged large-motor systems	600 mm deep MCC style	Configuration dependent
20F11RC5P0JA0NNNNN	PowerFlex 753	400 VAC	5 A class	Smaller industrial machinery	Compact frame	Configuration dependent
25B-D030N114	PowerFlex 525	480 VAC class	30 A class	Machine-level motor control	Compact frame	Configuration dependent

The first three are particularly relevant when the application is in the high-power industrial range.

The PowerFlex 753 and PowerFlex 525 families are much smaller and are more appropriate for applications where the motor power is considerably lower.

48. Comparison with 20G11BC1K2JN4NNNNN

The 20G11BC1K2JN4NNNNN is one of the closest alternatives to the target model.

Parameter	Target	Alternative
Model	20G11BC1K2JN2NNNNN	20G11BC1K2JN4NNNNN
Series	PowerFlex 755	PowerFlex 755
Voltage	400 VAC	400 VAC
Current	1,175 A	1,175 A
Normal Duty	710 kW	710 kW
Heavy Duty	560 kW	560 kW
Frame	9	9
Depth	600 mm	600 mm
HIM	Enhanced LCD / Full Numeric	Enhanced LCD / Full Numeric, higher-protection configuration
Dynamic braking	None	None
Main difference	Standard local interface configuration	Alternative higher-protection interface configuration

The two models are therefore very close electrically.

The main selection issue is the operator-interface configuration and the environmental requirements of the installation.

49. Comparison with 20G11BC1K2JN0NNNNN

Parameter	JN2	JN0
Model	20G11BC1K2JN2NNNNN	20G11BC1K2JN0NNNNN
Series	PowerFlex 755	PowerFlex 755
Voltage	400 VAC	400 VAC
Current	1,175 A	1,175 A
Normal Duty	710 kW	710 kW
Heavy Duty	560 kW	560 kW
Frame	9	9
Depth	600 mm	600 mm
Local HIM	Yes	No
Local commissioning	Easier	More dependent on external interface
Centralized control	Yes	Yes
Typical preference	Local maintenance access	Centralized control architecture
Weight	~1,246 kg class	~1,246 kg class

The JN2 is generally the more convenient choice when technicians need local access to the drive.

The JN0 is more streamlined for systems where all operator interaction is handled remotely.

50. Comparison with 20G11BC1K5JN2NNNNN

Parameter	1K2 JN2	1K5 JN2
Model	20G11BC1K2JN2NNNNN	20G11BC1K5JN2NNNNN
Voltage	400 VAC	400 VAC
Output current	1,175 A	1,480 A
Normal Duty	710 kW	850 kW
Heavy Duty	560 kW	710 kW
Frame	9	9
Depth	600 mm	600 mm
Cooling	Air cooled	Air cooled
HIM	Enhanced LCD / Full Numeric	Enhanced LCD / Full Numeric
Application	Large industrial motors	Larger industrial motors
Weight	~1,246 kg class	Configuration dependent

51. Current-Class Selection Guide

Motor Current Requirement	Recommended Model Class
Around 900 A	20G11BC910
Around 1,000–1,050 A	20G11BC1K0
Around 1,050–1,100 A	20G11BC1K1
Around 1,100–1,175 A	20G11BC1K2
Around 1,175–1,465 A	20G11BC1K4 class
Around 1,480 A	20G11BC1K5
Above approximately 2,000 A	Larger PowerFlex 755 configurations

This table is intended as a preliminary selection guide.

Final selection should be based on actual motor current, duty cycle and load characteristics rather than current alone.

52. Application Selection Guide

Application	Suitable Configuration
Large water pump	20G11BC1K2JN2
Cooling-water pump	20G11BC1K2JN2
Large centrifugal fan	20G11BC1K2JN2
Industrial blower	20G11BC1K2JN2
Long conveyor	20G11BC1K2JN2
Mining conveyor	20G11BC1K2JN2
Cement plant fan	20G11BC1K2JN2
Process pump	20G11BC1K2JN2
Wastewater aeration	20G11BC1K2JN2
Centralized motor-control system	JN0 / JN2
Local maintenance required	JN2
More protected local interface required	JN4
Larger motor above 1,175 A	1K5 or higher class

53. Commissioning Procedure

A practical commissioning procedure can include the following steps.

Step 1 — Verify the Catalog Number

Confirm that the installed unit is actually:

20G11BC1K2JN2NNNNN

This is important because PowerFlex catalog numbers can differ by filtering, braking, enclosure, HIM and other configuration details.

Step 2 — Verify Incoming Power

Confirm:

• Supply voltage.
• Phase.
• Frequency.
• Grounding arrangement.
• Protective equipment.

Step 3 — Verify Motor Nameplate

Record:

• Motor voltage.
• Motor current.
• Motor frequency.
• Motor speed.
• Motor power.
• Power factor.
• Motor efficiency.
• Service factor where applicable.

Step 4 — Configure the Motor

Enter the correct motor parameters into the drive.

Incorrect motor data can affect control performance and protection.

Step 5 — Check Rotation

Before coupling the motor to the mechanical load, verify the direction of rotation.

This is especially important for:

• Pumps.
• Fans.
• Compressors.
• Conveyors.
• Process machines.

Step 6 — Test at Low Speed

Start with a controlled low-speed test.

Check:

• Current.
• Vibration.
• Rotation.
• Motor noise.
• Drive temperature.
• Mechanical response.

Step 7 — Increase Speed Gradually

Increase the speed while observing:

• Motor current.
• Load behavior.
• Acceleration.
• Drive temperature.
• Process response.

Step 8 — Test Communication

Verify communication between:

• PLC.
• HMI.
• Network.
• Drive.
• Supervisory system.

54. Preventive Maintenance

Because this is a high-power drive, preventive maintenance should be taken seriously.

A maintenance plan can include:

• Cooling fan inspection.
• Cabinet inspection.
• Dust removal.
• Electrical connection inspection.
• Grounding inspection.
• Motor cable inspection.
• Parameter backup.
• Fault-history review.
• Alarm-history review.
• Temperature monitoring.
• Communication inspection.
• Ventilation inspection.

55. Cooling System Maintenance

Cooling is one of the most important maintenance areas.

The maintenance team should periodically check:

• Fan operation.
• Airflow.
• Ventilation openings.
• Dust accumulation.
• Cabinet temperature.
• Electrical-room temperature.
• Signs of overheating.

A blocked airflow path can cause excessive temperature rise and unnecessary thermal stress on power components.

56. Electrical Connection Maintenance

High-current equipment requires careful attention to electrical connections.

Maintenance inspections may include:

• Power terminals.
• Motor terminals.
• Grounding conductors.
• Control terminals.
• Communication connections.
• Cable insulation.
• Signs of overheating.
• Signs of discoloration.
• Mechanical looseness.

Any maintenance work must follow the applicable electrical safety procedures and equipment isolation requirements.

57. Parameter Backup

A complete parameter backup is strongly recommended.

The backup should contain the final commissioned configuration.

Important information can include:

• Motor parameters.
• Speed limits.
• Acceleration time.
• Deceleration time.
• Control mode.
• Reference source.
• Start source.
• Network settings.
• Fault configuration.
• I/O assignments.
• Process-control parameters.

Keeping this information available can significantly reduce downtime after a drive replacement.

58. Mechanical Handling

The approximate 1,246 kg weight class means that transportation should be planned before delivery.

The project team should confirm:

• Delivery entrance.
• Door dimensions.
• Floor capacity.
• Forklift capacity.
• Crane requirements.
• Lifting points.
• Storage area.
• Installation position.
• Final cabinet access.

The equipment should not simply be treated like a normal wall-mounted VFD.

59. Electrical Room Design

The electrical room should provide sufficient:

• Ventilation.
• Temperature control.
• Maintenance access.
• Lighting.
• Cable space.
• Grounding.
• Fire protection.
• Emergency isolation.

The high-power nature of the drive makes electrical-room planning an important part of the overall project.

60. Why Choose the 20G11BC1K2JN2NNNNN?

There are several reasons to select this particular configuration.

First, the 1,175 A output capacity provides a large amount of motor-current capability.

Second, the 710 kW Normal Duty rating makes it suitable for a wide range of large continuous industrial loads.

Third, the 560 kW Heavy Duty rating gives the configuration a clear reference point for more demanding applications.

Fourth, the Frame 9 architecture is designed for large industrial equipment.

Fifth, the 600 mm MCC-style configuration is suitable for large electrical lineups.

Sixth, the local Enhanced LCD / Full Numeric HIM provides practical benefits during commissioning and maintenance.

Seventh, the PowerFlex 755 platform supports networked industrial automation through EtherNet/IP.

Together, these features make the model a strong choice for large motor-driven industrial equipment.

61. Product Specification Summary

Category	Detailed Specification
Model	20G11BC1K2JN2NNNNN
Brand	Allen-Bradley
Series	PowerFlex 755
Product family	PowerFlex
Product type	755 AC Packaged Drive
Product status	Active
Input voltage	400 VAC
Input phase	3 phase
Output current	1,175 A
Light Duty	Approximately 800 kW
Normal Duty	710 kW
Heavy Duty	560 kW
Frame	9
Cooling	Air cooled
Enclosure	IP20 / Type 1
Cabinet style	600 mm Deep MCC Style
Input type	AC input with precharge
DC terminals	Yes
EMC filter	Yes
CM jumper	Installed
Dynamic braking	None
Local HIM	Enhanced LCD / Full Numeric
Communication	Embedded EtherNet/IP
Typical applications	Pumps, fans, blowers, conveyors, mining, cement, water treatment, process equipment
Depth	600 mm
Overall dimensions	Frame 9; exact height and width configuration dependent
Weight (kg)	Approximately 1,246 kg class

62. Final Assessment

The 20G11BC1K2JN2NNNNN is a high-power industrial variable-frequency drive in the Allen-Bradley PowerFlex 755 series.

Its most important characteristics are the 400 VAC three-phase input class, 1,175 A output current, 710 kW Normal Duty rating, 560 kW Heavy Duty rating, Frame 9 construction, air cooling, 600 mm MCC-style depth and local Enhanced LCD / Full Numeric operator interface.

This combination makes the drive particularly appropriate for large industrial motor applications.

It is much more than a basic speed controller.

In a properly engineered system, it becomes part of the plant’s motor-control and automation architecture.

The embedded Ethernet capability allows the drive to participate in a networked control system, while the local HIM gives maintenance personnel a convenient interface at the equipment itself.

The 1,175 A rating is especially important.

It puts the model into the large-motor category and makes it appropriate for substantial process equipment.

Typical examples include large pumps, industrial fans, blowers, conveyors, mining machinery, water-treatment systems, cement-plant equipment and other high-power motor-driven machines.

The JN2 configuration is also a practical choice for plants where local commissioning and maintenance access are important.

A no-HIM version can be perfectly suitable for centralized control, but a local HIM can save time during startup, troubleshooting and maintenance.

For plants where technicians regularly work directly at the electrical cabinet, this can be a meaningful operational advantage.

The physical installation must not be underestimated.

With a 600 mm deep MCC-style construction and an approximate 1,246 kg equipment weight class, the drive requires appropriate mechanical planning.

The electrical room, transportation route, floor loading, lifting equipment, cable routing and service access should all be considered before installation.

The PowerFlex 755 family also provides a useful capacity ladder.

For smaller requirements, the 20G11BC910, 20G11BC1K0 and 20G11BC1K1 configurations can provide lower current classes.

For a direct capacity match, the 20G11BC1K2 family is appropriate.

For higher current requirements, the 20G11BC1K4 and 20G11BC1K5 classes provide additional capacity.

This makes it easier for a plant to standardize on one general drive family while using different ratings for different motor sizes.

The 20G11BC1K2JN4NNNNN is a particularly close alternative when the project needs a different local-interface configuration.

The 20G11BC1K2JN0NNNNN is a good alternative when a local HIM is not required and the system is primarily controlled from a PLC, HMI or SCADA system.

The 20G11BC1K5JN2NNNNN is the more logical direction when the motor requires more current than the 1,175 A class can provide. The 1K5 configuration is rated at approximately 1,480 A, 850 kW Normal Duty and 710 kW Heavy Duty.

For large industrial projects, the final selection should always be based on the motor nameplate current, actual load torque, overload requirement, acceleration and deceleration profile, environmental conditions, braking requirements and the complete electrical installation.

The catalog kW rating is useful for comparison, but motor current and actual duty are the more important selection criteria.

In practical terms, the 20G11BC1K2JN2NNNNN can be summarized as a high-power 400 VAC, 1,175 A, Frame 9 PowerFlex 755 AC drive with approximately 800 kW Light Duty capability, 710 kW Normal Duty capability, 560 kW Heavy Duty capability, air cooling, 600 mm MCC-style construction, EMC filtering, EtherNet/IP integration and a local Enhanced LCD / Full Numeric operator interface.

It is therefore best suited to large, centralized industrial motor-control applications where high electrical capacity, network integration and convenient local commissioning are all important.