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

20G11JC1K0JN0NNNNN — Detailed Product Overview, Technical Parameters, Applications, Advantages and Related Models

1. Product Overview

The 20G11JC1K0JN0NNNNN is a high-power air-cooled AC variable-frequency drive in the PowerFlex 755 series.

It is designed for large three-phase motor applications where high output current, high motor power, industrial enclosure protection, networked control and reliable speed regulation are required.

This particular configuration is a 400 VAC, three-phase, 1,040 A, Frame 9 drive. Its rated power capability is approximately 630 kW in light-duty operation, 560 kW in normal-duty operation and 500 kW in heavy-duty operation.

The unit uses an 800 mm deep MCC-style enclosure, forced-air cooling and IP54 / Type 12 protection. It also has embedded EtherNet/IP capability, making it suitable for integration into larger industrial automation and process-control systems.

The model is particularly appropriate for large pumps, fans, blowers, conveyors, compressors, material-handling systems, mining equipment, cement machinery, steel-processing equipment and other high-power rotating machinery.

---

2. Basic Product Identification

The model designation is important because the final characters specify the detailed configuration.

In particular, this model is not simply a generic 755 drive. The complete catalog number identifies the voltage class, frame, enclosure arrangement, input configuration, filtering configuration, braking configuration, display configuration and other options.

---

3. Brand and Series

The PowerFlex 755 series is designed for applications where the variable-frequency drive needs to provide considerably more than basic motor speed control.

It is intended for integration into sophisticated industrial automation systems and supports multiple motor-control strategies, feedback options, I/O configurations, communication options and application-specific functions.

---

4. Product Description

The 20G11JC1K0JN0NNNNN is a large-capacity AC drive designed to regulate the speed, torque and operating characteristics of high-power three-phase AC motors.

Its 1,040 A nominal output-current rating places it in the high-power industrial category.

The drive can be used to control motors in applications where direct-on-line starting would result in excessive starting current, mechanical shock or undesirable process behavior.

Instead of simply applying full voltage to the motor, the drive can regulate the electrical frequency and voltage supplied to the motor.

This makes it possible to control motor speed according to the requirements of the process.

For a large industrial motor, this can provide substantial operational benefits.

For example, a large pump does not always need to operate at full speed.

A large fan may require different airflow levels depending on production requirements.

A conveyor may need controlled acceleration rather than an immediate start.

A process machine may need precise speed regulation throughout different stages of production.

The drive provides the electrical control platform required for these types of applications.

---

5. Main Electrical Ratings

The three power ratings should be understood according to the actual application duty.

The highest rating, 630 kW, is associated with light-duty operation.

The 560 kW rating is the normal-duty rating.

The 500 kW rating is the heavy-duty rating.

For a real motor selection, the motor’s nameplate current and required overload capability are more important than simply comparing motor horsepower or kilowatts.

---

6. Light-Duty Rating — 630 kW

The light-duty rating is approximately:

630 kW

Light-duty operation is normally associated with applications where the load profile is comparatively smooth and does not continuously demand high overload torque.

Typical examples include large variable-torque loads.

Potential applications include:

• Large centrifugal fans.
• Large ventilation systems.
• Large blowers.
• Certain large pumps.
• Cooling-water systems.
• Industrial air-handling systems.
• Process ventilation equipment.

The light-duty rating allows the same physical drive platform to support a larger motor power than would be possible under a more demanding heavy-duty operating profile.

---

7. Normal-Duty Rating — 560 kW

The normal-duty rating is:

560 kW

This is one of the most important specifications for the model.

A motor with a nominal output around 560 kW may be a potential application, provided its rated current, voltage, speed, torque and overload requirements are compatible with the drive.

Normal-duty operation is appropriate for many continuous industrial processes.

Examples include:

• Large pumps.
• Large fans.
• Process machinery.
• Conveyors.
• Material-handling systems.
• Industrial compressors.
• Production equipment.

---

8. Heavy-Duty Rating — 500 kW

The heavy-duty rating is approximately:

500 kW

Heavy-duty operation should be considered when the application has higher starting torque, acceleration requirements or repeated overload conditions.

Potential examples include:

• Heavy conveyors.
• Crushers.
• Mining machinery.
• High-inertia equipment.
• Heavy material-handling systems.
• Large process machines.
• Certain compressor applications.

The 500 kW heavy-duty rating should be used instead of the higher light-duty rating when the actual load profile demands the additional overload capability.

---

9. Mechanical Parameters

The exact final dimensions can vary with the complete cabinet arrangement and accessories.

The 800 mm depth is an important characteristic of this particular MCC-style configuration.

Because this is a floor-mounted high-power drive rather than a small wall-mounted inverter, sufficient installation space must be reserved around the equipment.

---

10. Size and Weight

The approximate mechanical envelope can be described as:

Height: approximately 2300 mm

Width: approximately 1300 mm

Depth: approximately 800 mm

Weight: approximately 1,197 kg

The dimensions and weight should be regarded as engineering-level approximate values for the packaged configuration, rather than a substitute for the final mechanical drawing.

For transportation, foundation calculations, lifting equipment and site installation, the exact configuration drawing should always take precedence.

---

11. Enclosure Protection

The drive uses:

IP54 / NEMA Type 12

This provides a significantly more enclosed configuration than an open-frame drive.

It is appropriate for many indoor industrial electrical environments where protection against dust and incidental moisture is necessary.

IP54 should not be interpreted as unlimited protection against water.

High-pressure washdown, corrosive atmospheres, condensation and outdoor exposure require additional engineering consideration.

---

12. Cooling System

The 20G11JC1K0JN0NNNNN uses forced-air cooling.

This is necessary because the power conversion section produces significant heat during normal operation.

At a power level of several hundred kilowatts, thermal management becomes an important part of the overall system design.

The installation should therefore consider:

• Ambient temperature.
• Airflow.
• Cooling-fan operation.
• Cabinet ventilation.
• Air inlet temperature.
• Exhaust-air management.
• Altitude.
• Dust accumulation.
• Continuous current.
• Motor loading.
• Duty cycle.

A high-power drive can perform reliably for long periods when the cooling system is properly maintained.

---

13. Input Configuration

The model uses:

AC Input with Precharge and DC Terminals

The precharge arrangement helps manage the initial charging of the drive’s DC-link capacitors when the equipment is energized.

This is particularly important for a high-power drive because the DC-link energy storage system is considerably larger than that found in a small industrial inverter.

The DC terminals also provide flexibility for certain system architectures.

---

14. Dynamic Braking

The configuration specifies:

Dynamic Braking: None

This is important when evaluating the model for applications involving large rotating inertia.

If the process requires rapid deceleration, the energy returned from the motor during deceleration must be managed appropriately.

Potential system-level solutions may include:

• Controlled deceleration.
• External braking equipment.
• Regenerative arrangements.
• Mechanical braking.
• Process-controlled stopping.
• Extended deceleration time.

For a motor in the 500–630 kW range, the amount of regenerative energy can be considerable.

Consequently, braking should be considered during the initial system design rather than added as an afterthought.

---

15. EMC and Common-Mode Configuration

The model uses a filtered configuration with the common-mode jumper installed.

This arrangement is intended to help manage electromagnetic interference and common-mode electrical effects associated with variable-frequency drive operation.

Correct installation remains essential.

Important installation practices include:

• Proper grounding.
• Correct cabinet bonding.
• Suitable motor-cable routing.
• Appropriate cable shielding.
• Separation of power and control cables.
• Proper communication-cable routing.
• Correct motor-frame grounding.
• Proper termination.

The drive’s filtering arrangement should therefore be considered one part of the overall EMC design.

---

16. EtherNet/IP Integration

The PowerFlex 755 platform is designed for integration with industrial Ethernet systems.

The drive can therefore become part of a larger control architecture instead of operating as an isolated motor controller.

A typical system can be represented as:

Supervisory Control

↓

PLC / Process Controller

↓

Industrial Ethernet

↓

PowerFlex 755 Drive

↓

Large AC Motor

↓

Pump / Fan / Conveyor / Process Equipment

This type of arrangement is useful in large plants containing many motors.

---

17. Typical Information Exchanged with the Control System

This makes the drive useful in automated process environments where operators need access to motor information from a centralized control system.

---

18. Product Applications

Large Pumping Systems

Large pumps are among the most suitable applications for this type of drive.

Potential applications include:

• Water transfer.
• Cooling-water circulation.
• Industrial water systems.
• Process-fluid circulation.
• Wastewater systems.
• Mining-water systems.
• Large-scale pumping stations.

Variable-speed operation allows the pump to adjust its output to the process rather than continuously operating at full speed.

---

Large Fans

Large industrial fans can consume hundreds of kilowatts.

Typical applications include:

• Furnace ventilation.
• Process exhaust.
• Industrial ventilation.
• Cooling systems.
• Dust extraction.
• Air-handling equipment.
• Large combustion-air systems.

Fan applications are often particularly suitable for variable-speed control because airflow can be adjusted according to process demand.

---

Large Blowers

The drive can also be used for large blowers.

Typical applications include:

• Industrial air supply.
• Combustion systems.
• Wastewater aeration.
• Process-air systems.
• Pneumatic material handling.
• Chemical processing.

---

Conveyor Systems

Large conveyors can require very high motor torque and substantial acceleration capability.

Potential applications include:

• Mining conveyors.
• Aggregate conveyors.
• Cement conveyors.
• Bulk material systems.
• Port equipment.
• Steel plants.
• Heavy manufacturing.

The drive can provide controlled acceleration and speed regulation.

---

Mining Equipment

High-power variable-frequency drives are frequently applicable to large mining machinery.

Potential uses include:

• Long conveyors.
• Large pumps.
• Ventilation systems.
• Crushers.
• Material-handling systems.
• Processing equipment.

The high current capability of this model makes it particularly relevant to large motor installations.

---

Cement Plants

Potential applications include:

• Large fans.
• Large pumps.
• Conveyors.
• Material handling.
• Process machinery.
• Dust collection systems.
• Auxiliary production equipment.

---

Steel Processing

Potential applications include:

• Large cooling pumps.
• Process fans.
• Conveyors.
• Material handling.
• Auxiliary machinery.
• Large rotating equipment.

---

Pulp and Paper

Potential applications include:

• Large fans.
• Pumps.
• Conveyors.
• Process equipment.
• Material-handling systems.
• Large rotating machinery.

---

19. Application Summary

---

20. Main Product Advantages

20.1 Very High Output Current

The 1,040 A nominal output capability is the defining characteristic of this model.

It allows the drive to operate large industrial motors that would be beyond the practical range of compact variable-frequency drives.

---

20.2 High Motor Power Capacity

The model provides:

• 630 kW light duty
• 560 kW normal duty
• 500 kW heavy duty

This makes it suitable for a wide range of large industrial loads.

---

20.3 Flexible Duty Classification

Different industrial applications have different load profiles.

A fan does not have the same torque requirement as a crusher.

A pump does not have the same acceleration requirement as a conveyor.

By providing different duty ratings, the drive can be matched more appropriately to the actual mechanical load.

---

20.4 Industrial Enclosure

The IP54 / Type 12 configuration gives the equipment a higher degree of environmental protection than an open-frame configuration.

This is useful in industrial electrical rooms and process environments.

---

20.5 Large MCC-Style Construction

The 800 mm deep MCC-style enclosure is suitable for integration into large industrial electrical installations.

It is designed more like a major plant electrical system component than a small standalone inverter.

---

20.6 Network Integration

Embedded EtherNet/IP capability allows the drive to participate in a larger automation network.

This can simplify:

• Monitoring.
• Command control.
• Diagnostics.
• Parameter management.
• Fault collection.
• Production integration.

---

20.7 Multiple Motor-Control Strategies

The PowerFlex 755 platform supports multiple motor-control approaches, making it adaptable to different motor types and application requirements.

Depending on the configuration, the platform can be applied to:

• V/Hz control.
• Sensorless vector control.
• Flux/vector control.
• Permanent-magnet motor applications.
• Feedback-based applications.

The appropriate control method depends on the motor and required application performance.

---

21. Maintenance Advantages

The PowerFlex 755 architecture provides useful diagnostic capabilities for large industrial installations.

Maintenance personnel can monitor conditions such as:

• Drive faults.
• Drive warnings.
• Output current.
• Motor speed.
• Operating frequency.
• Temperature-related conditions.
• Cooling system status.
• Communication status.

This is useful for preventive maintenance.

Instead of waiting for a large motor system to fail, operators can monitor trends and investigate abnormal operating conditions.

---

22. Recommended Same-Series Models

The following models are useful comparison choices around the same high-power range.

The models above are especially useful when comparing different motor-current requirements around the high-power range.

---

23. Same-Series Technical Comparison

---

24. Why the 1,040 A Model Is Important

The 20G11JC1K0JN0NNNNN sits at an important point within the PowerFlex 755 high-power range.

The 910 A model provides lower capacity.

The 1,040 A model increases the capacity to:

630 kW light duty

560 kW normal duty

500 kW heavy duty

The next model increases the output-current capacity further.

Therefore, the 1,040 A configuration can be an attractive choice when a motor is too large for the 910 A model but does not require the capacity of the larger 1,090 A or 1,175 A models.

---

25. Five Related / Same-Series Models

1. 20G11JC910JN0NNNNN

This is the lower-capacity model immediately below the subject model.

Its 910 A rating makes it appropriate for applications around the 500 kW normal-duty range.

It can be considered where the 1,040 A capacity would otherwise provide unnecessary reserve.

---

2. 20G11JC1K1JN0NNNNN

This model increases capacity to approximately 1,090 A.

It is suitable when the application approaches the 630 kW normal-duty range.

---

3. 20G11JC1K2JN0NNNNN

This model increases the capacity further.

It is suitable for applications approaching approximately 710 kW normal duty and 800 kW light duty.

---

4. 20G11JC1K4JN0NNNNN

This is another higher-capacity option.

It is intended for applications requiring approximately 1,465 A and up to around 800 kW normal duty.

---

5. 20G11JC1K5JN0NNNNN

This model moves further into the high-power range and can be considered when the motor requirement exceeds the capacity of the 1,465 A configuration.

---

26. Five Popular Models from the Same Brand

For comparison across different capacity levels, the following models are useful examples from the same brand’s drive portfolio.

---

27. Broader Product Comparison

---

28. Main Selection Considerations

When choosing this drive for a real industrial installation, the following parameters should be considered together.

For a drive weighing roughly 1.2 tonnes, mechanical installation and transportation are important engineering considerations.

---

29. Installation Considerations

Because this is a very large floor-mounted drive, the installation should not be treated like the installation of a compact inverter.

Important considerations include:

Floor Loading

The approximate equipment weight is around 1,197 kg.

The floor or foundation should therefore be capable of supporting the equipment safely.

---

Lifting and Transportation

Special lifting and transportation equipment may be required.

The cabinet should be moved according to the mechanical handling provisions of the actual configuration.

---

Ventilation

The drive produces substantial heat.

Adequate ventilation and thermal management are essential.

---

Service Clearance

Sufficient clearance should be provided for:

• Power wiring.
• Control wiring.
• Inspection.
• Fan maintenance.
• Component replacement.
• Troubleshooting.

---

Cable Management

Large motor cables require appropriate bending radius, support and routing.

Power cables should also be separated from sensitive communication and control wiring where required.

---

30. Maintenance Recommendations

For a high-power drive, preventive maintenance can significantly reduce unexpected downtime.

---

31. Operational Benefits

The drive can provide several practical benefits to an industrial process.

Controlled Starting

The motor does not necessarily need to be started at full electrical stress.

The drive can gradually increase motor speed according to the programmed acceleration profile.

---

Controlled Stopping

The drive can control the deceleration process rather than simply removing power.

This can reduce mechanical shock.

---

Variable Speed

Motor speed can be matched to actual production requirements.

This is particularly valuable for pumps and fans.

---

Process Optimization

The motor can operate at the speed required by the process instead of operating continuously at one fixed speed.

---

Centralized Monitoring

Operating information can be transferred through the industrial communication system.

---

Fault Diagnostics

Drive status, alarms and faults can be monitored from the automation system.

---

32. Product Advantages at a Glance

---

33. Complete Technical Parameter Table

---

34. Final Product Assessment

The 20G11JC1K0JN0NNNNN is a high-power PowerFlex 755 AC drive intended for demanding industrial motor-control applications.

Its core specification can be summarized as:

400 VAC

3 Phase

1,040 A

630 kW Light Duty

560 kW Normal Duty

500 kW Heavy Duty

Frame 9

Forced-Air Cooling

IP54 / NEMA Type 12

800 mm Deep MCC Style

Embedded EtherNet/IP

No Dynamic Braking

Approx. 2300 × 1300 × 800 mm

Approx. 1,197 kg

The strongest characteristic of this model is its combination of high current capacity and large motor-power capability.

The 1,040 A output rating allows it to control very large AC motors, while the three duty ratings make it possible to match the drive to different mechanical load profiles.

For a continuous industrial application, the 560 kW normal-duty rating is particularly important.

For variable-torque applications such as large fans and certain pumps, the 630 kW light-duty rating can provide additional motor-power capacity.

For more demanding loads involving high torque or overload requirements, the 500 kW heavy-duty rating should be considered.

The IP54 / Type 12 enclosure provides a suitable level of protection for many industrial environments, while the 800 mm deep MCC-style cabinet makes the product appropriate for centralized industrial electrical installations.

The embedded EtherNet/IP capability is another major advantage because the drive can be integrated into a larger automation system for commands, speed references, status monitoring, alarms and diagnostics.

The most suitable applications are large pumps, industrial fans, blowers, conveyors, mining machinery, cement equipment, steel-processing systems, bulk-material handling and other large process machines.

From a mechanical perspective, this is a substantial piece of industrial equipment. An approximate 2300 × 1300 × 800 mm envelope and approximately 1,197 kg weight should be considered when planning the electrical room, foundation, transportation route, lifting method and maintenance access.

When selecting a replacement or alternative, the most useful same-series comparisons are the 910 A, 1,090 A, 1,175 A and 1,465 A configurations. The correct choice should ultimately be based on the motor nameplate current, duty cycle, torque requirements, overload requirements, braking requirements, ambient conditions and the complete electrical-system design rather than motor kW alone.