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Allen-Bradley 20G1ALC460JN4NNNNN PowerFlex 755 AC Drive – Detailed Product Profile
1. Product Introduction
The Allen-Bradley 20G1ALC460JN4NNNNN is a high-power PowerFlex 755 air-cooled AC drive designed for large three-phase industrial motors and demanding variable-speed applications.
It is a 400 VAC, three-phase, 460 A, Frame 8 drive with embedded EtherNet/IP communication, forced-air cooling, AC input with precharge, input filtering, CM-jumper configuration, and a door-mounted enhanced operator interface.
The drive is designed for large industrial equipment where accurate speed control, network integration, local operation, and reliable continuous-duty performance are important.
The model belongs to the PowerFlex 755 product family within the broader PowerFlex 750-Series platform.
With a rated output current of 460 A, this is a substantially larger drive than compact machine-level VFDs. It is intended for large pumps, fans, blowers, conveyors, process equipment, material-handling systems, and other industrial machinery requiring high-power motor control.
The catalog configuration identifies a 400 VAC, 3-phase, 460 A, Frame 8, IP20/NEMA Type 1, 800 mm deep MCC-style drive with a door-mounted HIM rated IP54/NEMA 12.
2. Brand and Product Series
| Item | Specification |
|---|---|
| Brand | Allen-Bradley |
| Product Family | PowerFlex |
| Product Series | PowerFlex 750-Series |
| Specific Drive Series | PowerFlex 755 |
| Product Type | Air-Cooled AC Drive |
| Catalog Number | 20G1ALC460JN4NNNNN |
| Drive Architecture | High-Power Industrial AC Drive |
| Cooling | Forced Air |
| Frame | Frame 8 |
| Input Voltage | 400 VAC |
| Input Phase | Three Phase |
| Rated Current | 460 A |
| Enclosure | IP20 / NEMA Type 1 |
| Cabinet Style | MCC Style |
| Cabinet Depth Class | 800 mm |
| Communication | Embedded EtherNet/IP |
| Local Operator Interface | Door-Mounted Enhanced HIM |
| HIM Enclosure Rating | IP54 / NEMA 12 |
| Dynamic Braking | None |
| Input Type | AC Input with Precharge |
| DC Terminals | None |
| Filtering | Filtered |
| CM Configuration | CM Jumper Installed |
3. Main Technical Parameters
| Parameter | Specification |
|---|---|
| Model / Catalog Number | 20G1ALC460JN4NNNNN |
| Brand | Allen-Bradley |
| Product Family | PowerFlex |
| Series | PowerFlex 755 |
| PowerFlex Platform | PowerFlex 750-Series |
| Product Type | Air-Cooled AC Drive |
| Input Voltage | 400 VAC |
| Input Phase | 3 Phase |
| Rated Output Current | 460 A |
| Light Duty Rating | 315 kW |
| Normal Duty Rating | 250 kW |
| Heavy Duty Rating | 200 kW |
| Frame Size | Frame 8 |
| Cooling Method | Forced Air |
| Input Type | AC Input with Precharge |
| DC Terminals | No |
| Dynamic Braking | None |
| EMC/Input Filtering | Filtered |
| CM Jumper | Installed |
| Communication | Embedded EtherNet/IP |
| Operator Interface | Enhanced LCD / Full Numeric HIM |
| HIM Installation | Door Mounted |
| HIM Enclosure | IP54 / NEMA 12 |
| Main Drive Enclosure | IP20 / NEMA Type 1 |
| Cabinet Style | 800 mm Deep MCC Style |
| Approx. Height | 2453 mm |
| Approx. Width | 600 mm |
| Approx. Depth | 800 mm |
| Approx. Frame Weight | Approximately 623 kg |
| Standalone Drive Reference Weight | Approximately 79.4 kg where supplied as the corresponding drive unit |
| Cooling Fan Type | Backward-Curved Centrifugal |
| Approx. Fan Airflow | 1805 m³/h |
| Approx. Fan Input Power | 0.45 kW |
Important dimensional note: the 2453 × 600 × 800 mm and approximately 623 kg figures are best treated as Frame 8 / MCC-style reference values for engineering space and installation planning. The approximately 79.4 kg figure corresponds to a drive-unit reference published for this catalog configuration and should not be confused with the weight of a complete large MCC/cabinet arrangement. Final shipping dimensions and weight should always be based on the actual configured assembly.
4. Product Configuration
The 20G1ALC460JN4NNNNN is a high-power packaged PowerFlex 755 drive.
Its principal configuration can be summarized as:
PowerFlex 755 + air cooling + 400 VAC + 460 A + Frame 8 + embedded EtherNet/IP + IP20/NEMA Type 1 + 800 mm MCC-style construction + filtered input + CM jumper + AC precharge + no DC terminals + no dynamic braking + door-mounted enhanced HIM.
This combination makes the model particularly suitable for large industrial installations where the drive is integrated into an MCC-style electrical lineup.
5. Electrical Rating
The drive operates from a 400 VAC three-phase power system and provides a rated current capability of 460 A.
The power rating is application-dependent because PowerFlex drives use different duty classifications.
The principal ratings associated with this current class are:
| Duty Class | Approximate Power Rating |
|---|---|
| Light Duty | 315 kW |
| Normal Duty | 250 kW |
| Heavy Duty | 200 kW |
These ratings should not be interpreted as interchangeable values for every application.
The appropriate rating depends on the motor current, load characteristics, overload requirements, acceleration profile, operating speed range, and duty cycle.
6. Light Duty – 315 kW
The Light Duty rating is approximately 315 kW.
This rating is particularly relevant to applications with relatively moderate torque requirements and variable-torque characteristics.
Typical examples include:
- Large centrifugal pumps
- Large ventilation fans
- Cooling-water pumps
- Cooling tower fans
- Large centrifugal blowers
- HVAC air-handling systems
- Industrial ventilation equipment
For variable-torque equipment, the 315 kW LD rating provides a substantial operating range.
7. Normal Duty – 250 kW
The Normal Duty rating is approximately 250 kW.
This is a very useful rating for general industrial motor applications.
Typical equipment includes:
- Process pumps
- Large conveyors
- Industrial fans
- Blowers
- Mixers
- Material-handling equipment
- Production machinery
- Utility equipment
For a 250 kW motor, the motor nameplate current must still be compared with the actual drive output-current capability.
Motor horsepower or kilowatt rating alone is not sufficient for final drive selection.
8. Heavy Duty – 200 kW
The Heavy Duty rating is approximately 200 kW.
Heavy Duty selection becomes important when the driven machine requires greater overload capability or higher torque during acceleration and operation.
Potential applications include:
- Heavy conveyors
- High-load material handling
- Crushers
- Certain process machines
- High-torque machinery
- Machines with demanding acceleration requirements
The engineer should use the Heavy Duty rating when the actual application requires the corresponding overload performance rather than selecting the drive based only on the highest published LD power.
9. Input Voltage
The drive is designed for a 400 VAC three-phase input.
This makes it suitable for industrial electrical systems using the common 400 V class of three-phase supply.
Before installation, the actual site supply should be checked for:
- Nominal voltage
- Voltage tolerance
- Frequency
- Phase configuration
- Short-circuit characteristics
- Grounding system
- Protection equipment
The motor voltage and drive output requirements must also be checked together.
10. AC Input with Precharge
The input configuration is:
AC Input with Precharge, no DC terminals.
The precharge function is important in a high-power drive because the DC-link capacitors require controlled charging when the drive is energized.
A controlled precharge sequence helps limit the initial charging current and provides a more suitable startup condition for a high-power converter.
This is particularly important in large industrial electrical systems where multiple high-power loads may be connected to the same distribution system.
11. No DC Terminals
This model does not provide external DC terminals as part of the specified configuration.
This makes the drive primarily an AC-input drive rather than a configuration intended for direct external DC-bus connection.
This distinction matters when designing:
- Common DC-bus systems
- Regenerative systems
- Multi-drive DC architectures
- Shared DC-link applications
- Energy-storage interfaces
If the project requires a shared DC bus, the drive configuration should be reviewed before purchase.
12. Dynamic Braking
The 20G1ALC460JN4NNNNN configuration specifies:
Dynamic Braking: None.
This means the drive does not include an internal dynamic-braking transistor as part of this catalog configuration.
This is an important consideration for high-inertia equipment.
Applications requiring rapid deceleration should be evaluated for:
- Regenerative energy
- Deceleration time
- Motor inertia
- Load inertia
- Braking energy
- Stop frequency
- Mechanical braking requirements
Typical applications requiring special attention include:
- High-inertia fans
- Large conveyors
- Centrifuges
- Hoists
- Certain material-handling machines
- Rapid-cycle machinery
13. Embedded EtherNet/IP
The drive includes embedded EtherNet/IP communication.
This allows the drive to be integrated into a modern industrial automation network.
Typical information that can be exchanged includes:
- Start/stop commands
- Speed reference
- Output frequency
- Motor current
- Drive status
- Fault information
- Alarm information
- Operating conditions
- Parameter information
- Diagnostic data
This is particularly useful in large plants where the drive is controlled by a centralized automation system.
14. Advantage of Network Integration
A network-connected drive can reduce dependence on extensive hardwired control circuits.
Instead of bringing every control function back to a central panel through individual wires, many commands and monitoring values can be exchanged through the industrial network.
This can simplify:
- Control architecture
- System diagnostics
- Status monitoring
- Parameter management
- Troubleshooting
- Plant-wide data collection
For large industrial facilities, this can also make it easier to standardize drive-control practices.
15. JN4 Operator Interface
One of the most important characteristics of the JN4 configuration is its operator interface.
The model is supplied with a door-mounted enhanced HIM, with an IP54/NEMA 12 interface enclosure rating.
This is different from configurations that are supplied without a local operator interface.
A door-mounted operator interface is particularly useful when the drive is installed inside an electrical cabinet or MCC lineup.
The technician can access important drive information from the cabinet door without opening the main electrical compartment.
16. Local Operator Functions
The local HIM can be useful during:
- Commissioning
- Motor rotation checks
- Parameter adjustment
- Startup testing
- Fault diagnosis
- Maintenance
- Local monitoring
- Troubleshooting
A technician working at the electrical cabinet can use the local interface to inspect drive operating information without relying entirely on a remote HMI or control-room workstation.
This is especially useful during initial startup when the rest of the automation system may not yet be fully commissioned.
17. Forced-Air Cooling
The drive uses forced-air cooling.
High-current power electronics generate considerable heat, so thermal management is a major part of the drive design.
The associated cooling arrangement uses a centrifugal fan configuration.
A reference airflow of approximately 1805 m³/h is associated with the fan arrangement, with approximately 0.45 kW fan electrical input power.
The actual installation must provide suitable airflow conditions around the equipment.
18. Cooling System Maintenance
The cooling system should be treated as a normal maintenance item.
Maintenance personnel should periodically inspect:
- Fan operation
- Airflow
- Fan noise
- Abnormal vibration
- Air passages
- Dust accumulation
- Cabinet temperature
- Thermal alarms
- Ventilation conditions
A reduction in airflow can increase internal temperature and may eventually affect drive reliability.
For large industrial drives, cooling maintenance should therefore be incorporated into the plant preventive-maintenance schedule.
19. IP20 / NEMA Type 1 Drive Construction
The main drive enclosure is identified as:
IP20 / NEMA Type 1.
This is suitable for installation in a protected industrial electrical environment.
It is not equivalent to a weatherproof outdoor enclosure.
The drive should therefore be protected from:
- Direct rain
- Water spray
- Condensation
- Excessive dust
- Conductive contamination
- Corrosive atmospheres
- Uncontrolled outdoor conditions
Where harsh environmental conditions exist, a properly engineered enclosure or electrical-room installation is required.
20. Door-Mounted HIM Protection
The JN4 door-mounted HIM has a higher enclosure protection level than the basic drive enclosure.
The operator interface is specified as:
IP54 / NEMA 12.
This is useful because the operator can access the interface from outside the main drive compartment.
It provides a practical operator station for equipment installed in industrial electrical cabinets.
21. 800 mm Deep MCC-Style Construction
The drive is designed in an 800 mm deep MCC-style configuration.
This means the installation is significantly larger than a typical compact VFD.
Engineering must account for:
- Cabinet depth
- Cable entry
- Power-cable bending radius
- Control wiring
- Network cabling
- Front access
- Maintenance space
- Ventilation
- Cabinet doors
- Transportation
- Lifting
- Floor loading
The physical installation should be planned before ordering the equipment.
22. Dimensions
A practical Frame 8 IP20 MCC-style reference is approximately:
| Mechanical Parameter | Reference Value |
|---|---|
| Frame | 8 |
| Height | 2453 mm |
| Width | 600 mm |
| Depth | 800 mm |
| Cabinet Style | MCC Style |
| Enclosure | IP20 / NEMA Type 1 |
| Approx. Basic Frame Weight | 623 kg |
These dimensions should be treated as engineering reference dimensions, not as a substitute for the final mechanical drawing.
The final equipment arrangement can change depending on options, cabinet sections, wiring compartments, and other factory configuration details.
23. Weight
The physical weight of this class of equipment requires careful installation planning.
A Frame 8 MCC-style reference weight is approximately:
623 kg
A separate drive-unit reference for this catalog configuration may be approximately:
79.4 kg
These numbers represent different physical configurations and should not be mixed.
For transportation and foundation design, the final configured assembly weight should always be used.
The complete MCC-style equipment can weigh substantially more than the drive electronics alone.
24. Mechanical Installation Requirements
The installation team should verify:
- Floor strength
- Cabinet anchoring
- Equipment lifting points
- Transportation route
- Doorway clearance
- Maintenance access
- Cable entry
- Ventilation
- Electrical clearances
- Grounding
- Network wiring
- Front access
Because this is a large industrial drive, the equipment should be considered part of the overall electrical-room layout rather than an isolated VFD component.
25. Major Product Advantages
The main advantages of the 20G1ALC460JN4NNNNN include:
- High 460 A current capacity.
- 315 kW Light Duty rating.
- 250 kW Normal Duty rating.
- 200 kW Heavy Duty rating.
- 400 VAC three-phase operation.
- PowerFlex 755 high-power architecture.
- Embedded EtherNet/IP.
- Enhanced local operator interface.
- Door-mounted HIM.
- IP54/NEMA 12 HIM protection.
- Forced-air cooling.
- Integrated AC input precharge.
- Filtered input configuration.
- CM jumper installed.
- Frame 8 industrial construction.
- MCC-style installation.
- Suitable for large process equipment.
- Suitable for centralized industrial automation.
26. Advantage – Large Motor Control
The 460 A current capability allows this drive to control substantially larger motors than compact machine drives.
This makes it suitable for:
- Large pumps
- Large fans
- Large blowers
- Heavy conveyors
- Industrial process equipment
- Material-handling equipment
- Utility systems
The drive can therefore serve as a central motor-control component in large industrial installations.
27. Advantage – Local Operator Access
The JN4 configuration has an important maintenance advantage because the HIM is mounted at the cabinet door.
This arrangement allows operators and technicians to interact with the drive without necessarily opening the main electrical compartment.
That can be useful for:
- Startup
- Monitoring
- Fault investigation
- Parameter verification
- Local testing
- Maintenance
It also provides a more practical interface for large MCC-style installations.
28. Advantage – Industrial Network Integration
Embedded EtherNet/IP allows the drive to become part of the plant’s control network.
The drive can exchange operational information with higher-level automation equipment.
This can improve:
- Visibility
- Diagnostics
- Control flexibility
- Maintenance efficiency
- Data collection
- Process coordination
For plants with many PowerFlex drives, network integration can also help standardize control methods.
29. Advantage – High-Power Frame 8 Platform
Frame 8 provides the mechanical and electrical capacity required for high-power applications.
Compared with smaller drive frames, the Frame 8 platform provides a more suitable architecture for:
- Large motors
- High current
- Large industrial cabinets
- Heavy-duty process equipment
- Centralized motor-control installations
30. Application – Large Pump Stations
Large pump stations are one of the strongest application areas for this drive.
Potential applications include:
- Raw-water pumping
- Cooling-water pumping
- Process-water circulation
- Booster pumping
- Industrial water transfer
- Wastewater pumping
- Large irrigation systems
Variable-speed control can allow pump operation to follow process demand.
This can provide smoother control compared with simple fixed-speed operation.
31. Application – Water Treatment
The drive can be used in large water-treatment facilities for:
- Intake pumps
- Transfer pumps
- Circulation pumps
- Aeration blowers
- Sludge-handling equipment
- Process-water systems
The embedded network interface is particularly useful when the drive needs to communicate with a centralized process-control system.
32. Application – Wastewater Treatment
Large wastewater plants often use high-power motors for pumping and aeration.
Possible applications include:
- Lift-station pumps
- Transfer pumps
- Aeration blowers
- Sludge pumps
- Process-water pumps
For these installations, environmental conditions should be carefully considered because wastewater facilities may contain moisture and corrosive atmospheres.
The IP20 drive itself should be installed in an appropriately protected electrical environment.
33. Application – Industrial Fans
Large industrial fans can be controlled using variable frequency operation.
Typical applications include:
- Furnace fans
- Boiler fans
- Exhaust fans
- Cooling fans
- Dust-collection fans
- Industrial ventilation
- Process-air systems
Fan applications often benefit from speed adjustment because airflow requirements can vary throughout the production cycle.
34. Application – Large Blowers
The drive can also be considered for large blower applications.
Potential equipment includes:
- Process blowers
- Aeration blowers
- Combustion-air blowers
- Industrial ventilation blowers
- Pneumatic-process blowers
The actual motor current and duty class must be checked before final selection.
35. Application – Conveyor Systems
Large conveyors frequently require high motor power and significant starting torque.
The PowerFlex 755 platform can be used for:
- Mining conveyors
- Cement conveyors
- Bulk-material conveyors
- Aggregate conveyors
- Port conveyors
- Industrial material-handling systems
The Heavy Duty rating should be used where the conveyor requires the corresponding overload capability.
36. Application – Mining Equipment
Mining applications can require large motor drives for:
- Conveyors
- Dewatering pumps
- Ventilation fans
- Material-handling equipment
- Process machinery
The electrical-room installation must be designed carefully because mining environments can involve dust, vibration, temperature variation, and other demanding conditions.
The basic IP20 drive configuration should normally be located in a suitable protected electrical environment.
37. Application – Cement Plants
Cement plants use large variable-speed motors in many areas.
Potential applications include:
- Process fans
- Exhaust fans
- Conveyors
- Blowers
- Cooling equipment
- Large pumps
- Material-handling systems
The PowerFlex 755 platform can be useful where large motor control must be coordinated with a plant automation system.
38. Application – Material Handling
The drive is also suitable for large material-handling equipment.
Potential equipment includes:
- Conveyors
- Feeders
- Transfer systems
- Bulk-material equipment
- Loading systems
- Industrial transport equipment
For material-handling applications, acceleration torque, stopping behavior, and braking requirements should be evaluated carefully.
39. Application – Process Machinery
Large process machinery can require stable variable-speed control.
Potential applications include:
- Mixers
- Blowers
- Pumps
- Process fans
- Rotating process machinery
- Large production equipment
The correct duty classification should be selected according to the mechanical characteristics of the load.
40. Application – Factory Utility Systems
Large factories often have high-power utility equipment.
Examples include:
- Central cooling systems
- Large water pumps
- Cooling towers
- Ventilation systems
- Process-air equipment
- Utility pumping systems
The PowerFlex 755 architecture is well suited to centralized industrial utility systems.
41. Application Selection Table
| Application | Suitability | Main Selection Consideration |
|---|---|---|
| Large Centrifugal Pump | Excellent | Motor current and pump curve |
| Cooling-Water Pump | Excellent | Variable flow requirements |
| Process Pump | Excellent | ND rating and motor current |
| Large Fan | Excellent | Variable-torque characteristics |
| Large Blower | Excellent | Motor current and starting load |
| Conveyor | Very Good | HD rating and acceleration torque |
| Mining Conveyor | Very Good | HD duty and environment |
| Water Treatment | Excellent | Environment and motor duty |
| Wastewater Pump | Excellent | Moisture and installation environment |
| Cement Conveyor | Very Good | Starting torque |
| Crusher | Application Dependent | HD rating and starting torque |
| Hoist | Application Dependent | Braking/regeneration |
| High-Inertia Machine | Application Dependent | Deceleration energy |
| Industrial Mixer | Good | Torque profile |
| HVAC Fan | Excellent | Variable-torque load |
| Material Handling | Very Good | Acceleration and stopping |
42. Five Recommended Related Models
The following five models are closely related to the requested catalog number and are useful when comparing current capacity, voltage, duty rating, or HIM configuration.
| Model | Voltage | Current | LD Rating | ND Rating | HD Rating | Frame | HIM / Configuration | Approx. Dimensions | Approx. Weight |
|---|---|---|---|---|---|---|---|---|---|
| 20G1ALC460JN2NNNNN | 400 VAC | 460 A | 315 kW | 250 kW | 200 kW | 8 | Enhanced LCD / Full Numeric HIM | Approx. 2453 × 600 × 800 mm | Approx. 623 kg Frame Reference |
| 20G1ALC460JN0NNNNN | 400 VAC | 460 A | 315 kW | 250 kW | 200 kW | 8 | No HIM | Approx. 2453 × 600 × 800 mm | Approx. 623 kg Frame Reference |
| 20G1ALC540JN2NNNNN | 400 VAC | 540 A | 315 kW | 315 kW | 250 kW | 8 | Enhanced LCD / Full Numeric HIM | Approx. Frame 8 | Approx. 623 kg Reference |
| 20G1ALC567JN2NNNNN | 400 VAC | 567 A | 355 kW | 315 kW | 250 kW | 8 | Enhanced LCD / Full Numeric HIM | Approx. Frame 8 | Approx. 623 kg Reference |
| 20G1ALC650JN2NNNNN | 400 VAC | 650 A | 400 kW | 355 kW | 315 kW | 8 | Enhanced LCD / Full Numeric HIM | Approx. Frame 8 | Approx. 623 kg Reference |
The dimensional and weight values for the related Frame 8 models should be regarded as engineering reference values. The final dimensions and weight depend on the exact cabinet and option configuration.
43. 20G1ALC460JN2NNNNN
The 20G1ALC460JN2NNNNN is the closest configuration comparison.
It shares the same fundamental electrical platform:
- 400 VAC
- 460 A
- 315 kW LD
- 250 kW ND
- 200 kW HD
- Frame 8
- Forced-air cooling
- Embedded EtherNet/IP
- IP20/NEMA Type 1
The principal selection difference is the HIM configuration.
The JN2 configuration provides a local enhanced LCD/full-numeric interface, while the JN4 configuration uses the door-mounted HIM arrangement.
For projects requiring operator access from the cabinet door, the JN4 configuration can be particularly attractive.
44. 20G1ALC460JN0NNNNN
The 20G1ALC460JN0NNNNN has the same basic 400 VAC / 460 A electrical class.
It provides:
- 315 kW LD
- 250 kW ND
- 200 kW HD
- Frame 8
- IP20
- Forced-air cooling
The key difference is the absence of the JN4 door-mounted enhanced HIM configuration.
This model can be considered where the plant already has a centralized HMI or where local drive operation is not required.
45. 20G1ALC540JN2NNNNN
The 20G1ALC540JN2NNNNN increases the current capacity to approximately 540 A.
Its approximate power ratings are:
- 315 kW LD
- 315 kW ND
- 250 kW HD
This model is useful when the 460 A drive is close to the motor’s required current or when additional current capacity is desirable.
46. 20G1ALC567JN2NNNNN
The 20G1ALC567JN2NNNNN provides approximately 567 A of current capacity.
Its approximate power ratings are:
- 355 kW LD
- 315 kW ND
- 250 kW HD
This is a useful step upward for large industrial loads.
It can be considered when the 460 A or 540 A configuration does not provide sufficient application margin.
47. 20G1ALC650JN2NNNNN
The 20G1ALC650JN2NNNNN provides approximately 650 A.
Its approximate ratings are:
- 400 kW LD
- 355 kW ND
- 315 kW HD
This model is appropriate for applications requiring significantly greater current capacity than the 460 A version.
48. Five Popular Allen-Bradley Models for Comparison
The following models provide a broader comparison across compact, medium-power, and high-power drive categories.
| Model | Series | Voltage | Current / Rating | Power Rating | Frame | Cooling | Enclosure | Dimensions | Weight |
|---|---|---|---|---|---|---|---|---|---|
| 25B-D030N114 | PowerFlex 525 | 380–480 VAC | 30 A | Approx. 15 kW ND | D | Air | IP20 | Compact frame | Approx. 4.76 kg |
| 25C-D030N114 | PowerFlex 527 | 380–480 VAC | 30 A | Approx. 15 kW ND | D | Air | IP20 | 260 × 130 × 212 mm | Frame-dependent |
| 20F1AND302JA0NNNNN | PowerFlex 753 | 480 VAC | 302 A | 250 HP ND / 200 HP HD | 7 | Forced Air | IP20/IP00 configuration | Frame 7 reference | Frame-dependent |
| 20G1AJE460JN4NNNNN | PowerFlex 755 | 600 VAC | 460 A | 500 HP LD / 500 HP ND / 400 HP HD | 8 | Forced Air | IP54 / Type 12 | Frame 8 reference | Frame-dependent |
| 20G1AJF415JN4NNNNN | PowerFlex 755 | 690 VAC | 415 A | 450 kW LD / 400 kW ND / 355 kW HD | 8 | Forced Air | IP54 / Type 12 | Frame 8 reference | Frame-dependent |
The compact-drive dimensions and weights are shown separately from the large Frame 7/Frame 8 equipment because large packaged drives can have substantially different mechanical configurations.
49. 25B-D030N114 – PowerFlex 525
The 25B-D030N114 belongs to the PowerFlex 525 family and is intended for much smaller motors.
It operates in the 380–480 VAC class and provides a compact solution for machine-level motor control.
Compared with the 20G1ALC460JN4NNNNN, it is dramatically smaller and lighter.
It is more suitable for:
- Small conveyors
- Pumps
- Fans
- Machine tools
- Packaging equipment
- General machinery
The approximate reference weight is 4.76 kg.
50. 25C-D030N114 – PowerFlex 527
The 25C-D030N114 belongs to the PowerFlex 527 family.
It is designed for compact machine automation and EtherNet/IP-based control.
Its approximate physical dimensions are:
260 × 130 × 212 mm.
This makes it a completely different physical class from the Frame 8 PowerFlex 755.
The PowerFlex 527 is appropriate for compact machinery, while the 20G1ALC460JN4NNNNN is designed for large industrial motors.
51. 20F1AND302JA0NNNNN – PowerFlex 753
The 20F1AND302JA0NNNNN is a PowerFlex 753 drive designed for industrial applications with a lower power/current requirement than the 460 A PowerFlex 755.
Its main comparison characteristics include:
- 480 VAC
- Three-phase
- 302 A
- Approximately 250 HP ND
- Approximately 200 HP HD
- Frame 7
- Forced-air cooling
- Industrial enclosure configuration
It can be considered where the application does not require the larger current capability of the 20G1ALC460JN4NNNNN.
52. 20G1AJE460JN4NNNNN – PowerFlex 755
The 20G1AJE460JN4NNNNN is a close PowerFlex 755 comparison because it uses the same 460 A current class and the JN4 operator-interface configuration.
The primary difference is the voltage class.
It is associated with a 600 VAC three-phase system and approximately:
- 500 HP LD
- 500 HP ND
- 400 HP HD
This model is therefore useful when the industrial motor system operates at a higher voltage than the 400 VAC system used by the requested model.
53. 20G1AJF415JN4NNNNN – PowerFlex 755
The 20G1AJF415JN4NNNNN provides another high-power PowerFlex 755 comparison.
It is intended for a 690 VAC industrial power system.
Its approximate ratings are:
- 415 A
- 450 kW LD
- 400 kW ND
- 355 kW HD
- Frame 8
This makes it particularly relevant to large industrial plants using 690 V motor systems.
54. Model Comparison – 400 VAC PowerFlex 755
| Model | Current | LD | ND | HD | Frame | Main Difference |
|---|---|---|---|---|---|---|
| 20G1ALC460JN0NNNNN | 460 A | 315 kW | 250 kW | 200 kW | 8 | No local HIM |
| 20G1ALC460JN2NNNNN | 460 A | 315 kW | 250 kW | 200 kW | 8 | Enhanced local HIM configuration |
| 20G1ALC460JN4NNNNN | 460 A | 315 kW | 250 kW | 200 kW | 8 | Door-mounted enhanced HIM |
| 20G1ALC540JN2NNNNN | 540 A | 315 kW | 315 kW | 250 kW | 8 | Higher current |
| 20G1ALC567JN2NNNNN | 567 A | 355 kW | 315 kW | 250 kW | 8 | Higher current and LD capacity |
| 20G1ALC650JN2NNNNN | 650 A | 400 kW | 355 kW | 315 kW | 8 | Much higher current capacity |
55. Application Selection by Duty
| Load Type | Typical Duty Consideration | Recommended Evaluation |
|---|---|---|
| Centrifugal Pump | LD / ND | Motor current and pump curve |
| Large Fan | LD | Variable-torque behavior |
| Blower | LD / ND | Starting load |
| Conveyor | ND / HD | Acceleration torque |
| Crusher | HD | Starting and overload torque |
| Mixer | ND / HD | Torque profile |
| Hoist | HD / Special | Braking and regeneration |
| Centrifuge | HD / Special | High inertia and braking |
| Water Pump | LD / ND | Flow and pressure |
| Process Machinery | ND / HD | Continuous torque |
| Material Handling | ND / HD | Acceleration and stopping |
| Industrial Ventilation | LD | Variable-torque operation |
56. Engineering Selection Checklist
Before selecting this drive for a project, the following information should be checked.
| Selection Item | Required Check |
|---|---|
| Catalog Number | 20G1ALC460JN4NNNNN |
| Motor Voltage | Compatible with 400 VAC class system |
| Motor Phase | Three Phase |
| Motor Current | Must be within drive rating |
| Motor Power | Check LD / ND / HD classification |
| Load Type | Pump, fan, conveyor, blower, etc. |
| Duty Cycle | Light / Normal / Heavy |
| Acceleration | Verify required torque |
| Deceleration | Verify stopping requirements |
| Regeneration | Determine whether regeneration occurs |
| Dynamic Braking | None in this configuration |
| Input | AC with Precharge |
| DC Bus | No external DC terminals |
| Network | Embedded EtherNet/IP |
| HIM | Door-mounted enhanced HIM |
| HIM Protection | IP54 / NEMA 12 |
| Drive Enclosure | IP20 / NEMA Type 1 |
| Cooling | Forced Air |
| Installation | MCC-style |
| Cabinet Depth | Approximately 800 mm class |
| Approx. Height | 2453 mm reference |
| Approx. Width | 600 mm reference |
| Approx. Depth | 800 mm reference |
| Approx. Frame Weight | 623 kg reference |
| Floor Loading | Must be checked |
| Cable Routing | Must be checked |
| Ventilation | Must be checked |
57. Maintenance Considerations
The high-power nature of this drive means maintenance should be planned systematically.
Important inspection areas include:
- Cooling fans
- Airflow
- Cabinet ventilation
- Electrical connections
- Grounding
- Network connections
- HIM operation
- Drive fault history
- Motor connections
- Cabinet temperature
- Environmental contamination
The local HIM is particularly useful during maintenance because technicians can inspect drive information directly at the cabinet.
58. Troubleshooting Advantages
The combination of the PowerFlex 755 architecture and door-mounted HIM provides a practical troubleshooting environment.
A technician can investigate:
- Drive faults
- Motor current
- Output frequency
- Operating status
- Speed reference
- Communication status
- Alarms
- Parameter conditions
This can reduce the need to move repeatedly between the electrical cabinet and the control room.
59. Network Troubleshooting
Because the drive includes embedded EtherNet/IP, communication should be included in the troubleshooting procedure.
Typical checks include:
- Network connection
- Device status
- Controller communication
- Drive network parameters
- Command reference
- Speed reference
- Drive status feedback
- Network fault information
For a large plant, network diagnostics can be as important as traditional electrical troubleshooting.
60. Cabinet Planning
The physical size of a Frame 8 drive should be considered during the initial engineering stage.
The project team should reserve enough space for:
- Drive cabinet
- Incoming power
- Motor cables
- Control wiring
- Network wiring
- Cooling airflow
- Maintenance access
- Door swing
- Operator access
- Lifting and removal
A large drive should not be installed into a tightly packed electrical room simply because the electrical rating is suitable.
Mechanical and thermal planning are equally important.
61. Floor Loading and Transportation
The approximate 623 kg Frame 8 reference weight means floor loading must be evaluated.
Transportation planning should consider:
- Forklift capacity
- Lifting equipment
- Pallet dimensions
- Door clearance
- Elevator capacity where applicable
- Floor loading
- Turning radius
- Installation sequence
The final configured cabinet may be considerably heavier than the basic drive unit.
62. Cooling-Room Requirements
A high-power 460 A drive produces significant heat.
The electrical room should therefore have adequate ventilation.
Important factors include:
- Room temperature
- Air exchange
- Heat accumulation
- Fan exhaust
- Air intake
- Cabinet spacing
- Other heat-generating equipment
If several large drives are installed in the same electrical room, the total room heat load should be calculated rather than evaluating each drive independently.
63. Advantages in Large Industrial Plants
For large industrial plants, the PowerFlex 755 architecture offers several practical benefits.
The drive provides:
- High power capacity
- High current capability
- Industrial networking
- Local operator access
- Large-motor compatibility
- Centralized control capability
- Diagnostic information
- Flexible duty selection
This makes it suitable for applications where motor control is a significant part of the overall automation system.
64. Advantages for Pump Stations
For large pump stations, the drive can provide:
- Adjustable pump speed
- Smooth acceleration
- Smooth stopping
- Centralized control
- Network monitoring
- Local maintenance access
- Flexible process control
The correct pump operating range should be established before commissioning.
65. Advantages for Fan Systems
For large fan systems, the drive provides variable-speed control instead of requiring the motor to operate continuously at one fixed speed.
Potential advantages include:
- Better airflow control
- Flexible operating conditions
- Smooth startup
- Reduced mechanical shock
- Centralized monitoring
- Network-based control
The final system performance depends on the fan curve, motor efficiency, mechanical design, and process requirements.
66. Advantages for Conveyors
For conveyor systems, the drive can provide controlled acceleration and speed adjustment.
This can be particularly useful for:
- Large belts
- Long conveyors
- Bulk-material systems
- Mining conveyors
- Cement conveyors
However, the Heavy Duty rating and mechanical torque requirements should be verified carefully.
67. Advantages for Maintenance Teams
The JN4 door-mounted HIM is particularly useful for maintenance personnel.
Technicians can perform local inspection and adjustment while remaining outside the main electrical compartment where the installation arrangement permits it.
This makes the operator interface practical for:
- Commissioning
- Preventive maintenance
- Fault investigation
- Operational checks
- Parameter verification
- Local testing
68. Plant Standardization
If a facility already uses PowerFlex 750-Series drives, selecting another PowerFlex 755 model can simplify plant standardization.
Standardization can reduce the variation in:
- Operator procedures
- Maintenance training
- Spare-parts requirements
- Drive configuration methods
- Network architecture
- Troubleshooting procedures
- Engineering documentation
This can be especially valuable in large factories and process plants.
69. Overall Technical Summary
The Allen-Bradley 20G1ALC460JN4NNNNN is a large PowerFlex 755 air-cooled AC drive designed for high-power industrial motor control.
Its key electrical characteristics are:
400 VAC, three-phase, 460 A, 315 kW LD, 250 kW ND, 200 kW HD, Frame 8.
Its principal configuration characteristics are:
Forced-air cooling, AC input with precharge, no DC terminals, no dynamic braking, filtered input, CM jumper installed, embedded EtherNet/IP, IP20/NEMA Type 1 drive construction, 800 mm deep MCC-style installation, and door-mounted enhanced HIM with IP54/NEMA 12 protection.
The model is particularly suitable for large pumps, fans, blowers, conveyors, water-treatment equipment, mining systems, cement equipment, material-handling systems, and large industrial process machinery.
70. Overall Product Advantages
The most important advantages of the 20G1ALC460JN4NNNNN can be summarized as follows:
High Current Capability
The 460 A rating makes the drive suitable for large industrial motors.
High Power Capacity
The drive provides up to approximately 315 kW under the Light Duty classification.
Flexible Duty Selection
The 315/250/200 kW LD/ND/HD structure allows the drive to be evaluated against different industrial load types.
Industrial Network Integration
Embedded EtherNet/IP allows the drive to communicate with the wider automation system.
Local Operator Access
The door-mounted enhanced HIM provides convenient access for operators and maintenance technicians.
High-Power Frame Construction
Frame 8 provides the physical and electrical platform required for large motor applications.
Forced-Air Cooling
The cooling system is designed for high-power continuous operation.
Integrated Precharge
The AC input precharge arrangement is appropriate for the high-power DC-link system.
Industrial MCC Installation
The 800 mm deep MCC-style arrangement makes the drive suitable for centralized electrical-room installations.
71. Final Product Assessment
The Allen-Bradley 20G1ALC460JN4NNNNN is a strong choice for a high-power 400 VAC industrial motor-control application where a 460 A PowerFlex 755 drive with a door-mounted enhanced operator interface is required.
Its combination of high current capacity, multiple duty classifications, embedded EtherNet/IP, forced-air cooling, local operator access, and Frame 8 construction makes it suitable for large industrial automation projects.
The model is especially appropriate where the drive must be integrated into an MCC-style electrical installation and where technicians need convenient access to the drive interface from the cabinet door.
The most closely related 400 VAC models are the 20G1ALC460JN0NNNNN, 20G1ALC460JN2NNNNN, 20G1ALC540JN2NNNNN, 20G1ALC567JN2NNNNN, and 20G1ALC650JN2NNNNN.
For broader product comparison, the 25B-D030N114, 25C-D030N114, 20F1AND302JA0NNNNN, 20G1AJE460JN4NNNNN, and 20G1AJF415JN4NNNNN represent useful alternatives across compact, medium-power, and high-power drive applications.
From an engineering-selection perspective, the most important points are not simply the nominal motor kW rating. The final selection should be based on the motor nameplate current, duty classification, load torque, acceleration requirements, deceleration requirements, braking energy, ambient conditions, enclosure environment, cooling requirements, network architecture, and final cabinet arrangement.
For large equipment, the mechanical installation is equally important. The approximate Frame 8 reference dimensions of 2453 mm × 600 mm × 800 mm and approximate reference weight of 623 kg demonstrate that this is a substantial industrial installation rather than a compact machine-mounted VFD.
The 20G1ALC460JN4NNNNN is therefore best viewed as a complete high-power industrial motor-control solution within the PowerFlex 755 platform, particularly suited to large process and infrastructure equipment requiring reliable variable-speed operation and integrated industrial control.