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Allen-Bradley 20G1ALF265JN0NNNNN PowerFlex 755 AC Drive
1. Product Overview
The Allen-Bradley 20G1ALF265JN0NNNNN is a high-power PowerFlex 755 AC Drive designed for three-phase industrial motor control applications requiring a 690 VAC supply and a rated output current of 265 A.
It belongs to the PowerFlex 755 family and is intended for demanding industrial installations where accurate speed regulation, controlled acceleration and deceleration, motor protection, process control, and network communication are required.
The drive uses an air-cooled construction and an 800 mm deep MCC-style mechanical configuration. The product configuration includes an AC input with precharge and no external DC terminals. It also provides embedded EtherNet/IP communication for integration into an industrial automation network.
The model is suitable for a wide range of large motor applications, including pumps, fans, blowers, conveyors, compressors, mixers, material-handling equipment, process machinery, and other large industrial loads.
2. Brand and Series
| Item | Description |
|---|---|
| Brand | Allen-Bradley |
| Product Family | PowerFlex |
| Product Series | PowerFlex 755 |
| Product Type | AC Variable Frequency Drive |
| Model | 20G1ALF265JN0NNNNN |
| Drive Class | High-power industrial AC drive |
| Input Voltage | 690 VAC |
| Input Phase | 3 Phase |
| Rated Current | 265 A |
| Cooling | Air cooled |
| Communication | Embedded EtherNet/IP |
| Frame | Frame 8 |
| Enclosure / Construction | Type 1 / IP20, 800 mm deep MCC-style configuration |
| Input Configuration | AC input with precharge |
| External DC Terminals | No |
| Filtering | Filtered |
| CM Jumper | Installed |
| HIM | Blank / no HIM |
| Dynamic Braking | None in the specified configuration |
The model designation 20G1ALF265JN0NNNNN identifies a specific PowerFlex 755 configuration rather than simply identifying a general drive family. The individual characters represent different electrical, enclosure, filtering, interface, and configuration selections.
3. Main Technical Parameters
| Parameter | Specification |
|---|---|
| Model | 20G1ALF265JN0NNNNN |
| Brand | Allen-Bradley |
| Series | PowerFlex 755 |
| Product Type | AC Drive / Variable Frequency Drive |
| Input Voltage | 690 VAC |
| Input Frequency | 50/60 Hz class industrial supply |
| Input Phase | 3 Phase |
| Rated Current | 265 A |
| Light-Duty Power | 315 kW |
| Normal-Duty Power | 250 kW |
| Heavy-Duty Power | 200 kW |
| Frame Size | Frame 8 |
| Cooling Method | Forced-air / air cooled |
| Input Type | AC input with precharge |
| DC Terminals | None |
| Communication | Embedded EtherNet/IP |
| Enclosure Style | Type 1 / IP20 |
| Mechanical Style | 800 mm deep MCC style |
| Filtering | Filtered |
| Common-Mode Jumper | Installed |
| Dynamic Braking | None in this configuration |
| HIM | Blank / no HIM |
| Installation Environment | Industrial indoor installation |
| Main Function | Variable-speed AC motor control |
| Typical Applications | Pumps, fans, conveyors, compressors, mixers, process machinery |
| Dimensions | 800 mm deep configuration; overall height and width depend on the applicable mechanical arrangement |
| Approximate Planning Dimensions | Approximately 600 W × 2450 H × 800 D mm, to be treated as preliminary planning values only |
| Weight | Exact mechanical weight should be confirmed from the applicable dimensional/mechanical drawing before lifting or transport |
| Approximate Planning Weight | Approximately 100 kg class for preliminary layout planning only; do not use this value for lifting calculations |
The 690 VAC, 265 A, Frame 8 configuration and 315 kW / 250 kW / 200 kW duty ratings are associated with the 20G1ALF265 configuration.
Important dimensional note: the 800 mm value is part of the specified MCC-style configuration. The complete physical envelope should be taken from the mechanical drawing for the exact installation arrangement. The approximate height, width, and planning weight above should not be treated as certified shipping, lifting, or fabrication dimensions.
4. Electrical Rating
The 20G1ALF265JN0NNNNN is designed for a 690 VAC three-phase industrial power system.
Its 265 A rating places it in the high-power section of the PowerFlex 755 product family. The drive is intended for large motors and machinery where a conventional low-power variable-frequency drive would not provide sufficient output capacity.
The high-voltage input configuration is particularly suitable for large industrial installations because higher motor voltage allows large power levels to be handled without requiring extremely high motor current.
For large pumps, fans, compressors, conveyors, and process equipment, this voltage class can help simplify the electrical architecture of the motor power system.
5. Power Ratings
The drive has different motor power ratings depending on the required duty level.
| Duty Rating | Output Rating |
|---|---|
| Light Duty | 315 kW |
| Normal Duty | 250 kW |
| Heavy Duty | 200 kW |
The three ratings should not be treated as interchangeable.
A motor operating under relatively stable loading conditions may be selected using the normal-duty rating, while an application involving frequent overload, high starting torque, acceleration of heavy machinery, or high transient loading may require the heavy-duty rating.
The light-duty rating provides the highest stated continuous power level, while the heavy-duty rating provides a lower continuous power level in exchange for greater overload capability appropriate to more demanding load conditions.
6. Light-Duty Operation
The 315 kW Light-Duty rating is intended for applications where the motor load is comparatively moderate and the drive is not subjected to severe continuous overload conditions.
Typical examples include large centrifugal fans, centrifugal pumps, cooling-water pumps, ventilation equipment, and other variable-torque machinery.
Variable-torque applications generally have a favorable torque profile because the required torque changes with operating speed. This allows the drive to take advantage of its higher light-duty power rating.
For a 315 kW motor application, the complete motor nameplate data, actual load profile, ambient temperature, installation altitude, starting requirements, and required overload capacity should be checked before final selection.
7. Normal-Duty Operation
The 250 kW Normal-Duty rating is an important reference point for general industrial applications.
This rating can be used for machinery with more consistent loading requirements where the motor operates continuously but does not experience severe repetitive overload.
Typical applications include:
- Industrial pumps
- Process fans
- Conveyor systems
- Material-handling machinery
- Blowers
- Industrial compressors
- Process equipment
- Large machine tools
- Production machinery
The 250 kW normal-duty rating provides a useful balance between motor power and operating capability for general-purpose industrial equipment.
8. Heavy-Duty Operation
The 200 kW Heavy-Duty rating is intended for applications where the motor experiences greater mechanical loading or requires stronger overload performance.
Heavy-duty applications can include conveyors with high starting torque, crushers, mixers, loaded material-handling equipment, certain compressors, and machinery with high inertia.
For these applications, motor torque requirements are generally more important than simply matching the motor’s kW value.
A 200 kW motor used in a high-torque application should therefore be evaluated using the heavy-duty rating rather than simply comparing the motor’s nameplate power to the 315 kW light-duty figure.
9. Product Introduction
The PowerFlex 755 is an industrial AC drive platform designed for high-performance motor control.
The 20G1ALF265JN0NNNNN configuration combines a high-voltage 690 VAC input, 265 A current capacity, air cooling, integrated EtherNet/IP communication, and a large Frame 8 mechanical configuration.
The drive is intended for systems where motor speed must be controlled electronically instead of operating the motor directly from the incoming line frequency.
With variable-frequency control, the motor can be accelerated gradually, operated at controlled speed, decelerated in a controlled manner, and adjusted according to the requirements of the production process.
This makes the drive useful not only for energy management but also for improving process stability, reducing mechanical stress, and coordinating motor operation with other automation equipment.
10. Embedded EtherNet/IP Communication
One of the important characteristics of this configuration is its embedded EtherNet/IP communication capability.
EtherNet/IP allows the drive to exchange operating information with a control system over an industrial Ethernet network.
Depending on the application configuration, information such as the following can be exchanged:
- Speed reference
- Start and stop commands
- Motor speed
- Motor current
- Drive status
- Fault information
- Warning information
- Output frequency
- Process-related control values
- Diagnostic information
This reduces the need for extensive hardwired control wiring and allows the drive to become part of a larger automation system.
For large production lines, networked drive control can also make troubleshooting easier because operating information can be viewed from the automation system rather than requiring every operating parameter to be checked locally.
11. AC Input with Precharge
The specified model uses an AC input with precharge and no external DC terminals.
The precharge arrangement is important in a large drive because the internal DC bus contains substantial energy-storage components.
During energization, the precharge circuit helps manage the initial charging current of the DC bus.
The configuration without external DC terminals is suitable for applications where the drive is used as an individual AC-input drive rather than as part of a shared external DC-bus architecture.
This configuration should be considered when replacing an existing drive, because a replacement model with different input or DC-bus provisions may require changes to the electrical design.
12. Air-Cooled Construction
The 20G1ALF265JN0NNNNN uses an air-cooled design.
High-power semiconductor switching devices generate heat during operation. The cooling system moves air through the drive assembly to transfer this heat away from the power components.
For reliable operation, the installation must provide adequate ventilation and clearance around the equipment.
Important installation considerations include:
- Cabinet ventilation
- Ambient temperature
- Airflow path
- Dust accumulation
- Filter maintenance
- Installation altitude
- Heat generated by neighboring equipment
- Cabinet internal temperature
- Service access
A drive with adequate electrical capacity can still experience thermal problems if the cabinet ventilation system is undersized.
13. Enclosure and Mechanical Configuration
The specified configuration is associated with a Type 1 / IP20, 800 mm deep MCC-style arrangement.
The 800 mm depth is particularly important when designing an electrical room, MCC lineup, drive cabinet, or equipment enclosure.
The installer should consider:
- Front access
- Cable routing
- Power cable bending radius
- Control wiring
- Network wiring
- Ventilation
- Maintenance access
- Door clearance
- Lifting and installation access
- Separation from heat-producing equipment
The actual installation dimensions should always be taken from the applicable mechanical drawing for the exact configuration.
14. Dimensions and Weight
Because the requested model is a large Frame 8 configuration, physical dimensions are important when preparing an equipment layout.
| Mechanical Parameter | Value / Description |
|---|---|
| Model | 20G1ALF265JN0NNNNN |
| Mechanical Configuration | 800 mm deep MCC style |
| Depth | 800 mm configuration |
| Approximate Planning Width | About 600 mm |
| Approximate Planning Height | About 2450 mm |
| Approximate Planning Depth | About 800 mm |
| Approximate Planning Weight | About 100 kg class |
| Certified Weight | Must be confirmed from the exact mechanical/shipping documentation |
| Certified Overall Dimensions | Must be confirmed from the exact dimensional drawing |
The dimensions above are intended only for preliminary equipment-layout planning.
For actual cabinet fabrication, transportation, crane selection, floor loading, lifting, or installation, the exact dimensional drawing and product-specific documentation should be used.
This is especially important for Frame 8 equipment because mechanical configuration, packaging, accessories, and installation arrangement can affect the final overall dimensions and weight.
15. Pump Applications
The drive is well suited to large industrial pump systems.
Typical applications include:
- Cooling-water pumps
- Process-water pumps
- Circulation pumps
- Water-treatment pumps
- Industrial transfer pumps
- Cooling-tower pumps
- Raw-water pumps
- Large utility pumps
For centrifugal pumps, controlling motor speed can provide more precise process control than continuously operating the motor at full speed and regulating flow using mechanical throttling.
The drive can therefore be integrated into a process-control strategy where pump speed changes according to flow, pressure, temperature, or production demand.
16. Fan and Blower Applications
Large fans and blowers are another suitable application.
Examples include:
- Industrial ventilation
- Furnace fans
- Cooling fans
- Exhaust systems
- Combustion-air fans
- Dust-collection systems
- Process-air blowers
- HVAC-related industrial equipment
Fan systems frequently operate for long periods and may not require maximum airflow continuously.
A variable-speed drive allows the motor speed to be adjusted to the actual process requirement.
This can reduce unnecessary motor operation at full speed and can also improve process control.
17. Conveyor Applications
The 20G1ALF265JN0NNNNN can also be considered for large conveyor systems where motor speed and acceleration must be controlled.
Typical applications include:
- Bulk-material conveyors
- Mining conveyors
- Production conveyors
- Warehouse conveyors
- Material-transfer systems
- Heavy industrial conveyors
A controlled acceleration profile can reduce mechanical shock to gearboxes, couplings, belts, chains, and other transmission components.
For conveyors with high starting torque or high inertia, the motor and drive should be selected according to the actual torque requirements rather than motor kW alone.
18. Compressor Applications
Large industrial compressors can require accurate motor speed control and substantial starting capability.
Possible applications include:
- Process compressors
- Air compressors
- Industrial gas systems
- Cooling-related compressors
- Plant utility compressors
The drive can regulate compressor motor speed according to process requirements, allowing the control system to adjust capacity as demand changes.
Compressor applications require careful consideration of the compressor type, required torque curve, minimum operating speed, acceleration requirements, and motor cooling.
19. Mixer and Agitator Applications
Large mixers and agitators can impose substantial mechanical loads on the motor.
The PowerFlex 755 platform can be applied to applications where controlled speed is required for:
- Chemical mixing
- Industrial processing
- Material blending
- Tank agitation
- Food-processing equipment
- Slurry handling
- Batch-processing machinery
Mixer applications should be evaluated according to starting torque, viscosity, load inertia, operating speed, and the amount of time spent at each operating point.
20. Process Machinery
The drive can also be used in process machinery where speed control is directly related to production quality.
Examples include:
- Production lines
- Material-processing machinery
- Industrial handling equipment
- Large machine systems
- Process equipment
- Manufacturing machinery
- Utility systems
In these applications, the drive becomes part of the overall control system rather than simply acting as a motor starter.
21. Main Product Advantages
21.1 High-Power Motor Control
The 265 A rating provides substantial motor-control capacity for large industrial equipment.
The 690 VAC voltage class is particularly appropriate for high-power motor systems where high electrical power must be transferred efficiently.
21.2 Multiple Duty Ratings
The drive provides different power ratings for light-duty, normal-duty, and heavy-duty operation.
This allows the same basic drive platform to be evaluated against different application load profiles.
The ratings are:
| Duty | Rating |
|---|---|
| Light Duty | 315 kW |
| Normal Duty | 250 kW |
| Heavy Duty | 200 kW |
This distinction is useful when selecting a drive for machinery with different overload characteristics.
21.3 Industrial Network Integration
Embedded EtherNet/IP communication allows the drive to communicate with the wider automation system.
This is useful for centralized control, monitoring, diagnostics, production data, and coordinated machine operation.
21.4 Controlled Motor Acceleration
A variable-frequency drive allows the motor to accelerate progressively instead of applying full line frequency immediately.
Controlled acceleration can reduce mechanical shock and help protect mechanical transmission components.
21.5 Controlled Deceleration
The drive can also control motor deceleration.
This is useful for conveyors, pumps, fans, process machinery, and other equipment where abrupt stopping may create mechanical or process problems.
21.6 Adjustable Operating Speed
Instead of running the motor continuously at one fixed speed, the drive can operate the motor at different speeds according to the process requirement.
This provides greater flexibility for production equipment.
21.7 Reduced Mechanical Stress
Controlled acceleration and deceleration can reduce stress on:
- Couplings
- Gearboxes
- Shafts
- Belts
- Chains
- Bearings
- Pumps
- Fans
- Conveyor structures
This can be particularly useful in large mechanical systems where starting torque and inertia are significant.
22. Energy Management Benefits
Variable-speed operation can provide energy-management benefits in applications where the mechanical load varies with speed.
This is particularly relevant to centrifugal pump and fan systems.
Instead of operating the motor continuously at maximum speed, the drive can adjust speed according to process demand.
The actual energy savings depend on the load characteristics, operating schedule, motor efficiency, system design, process requirements, and control strategy.
The drive itself should therefore not be considered an automatic energy-saving device. The benefit comes from using variable-speed operation appropriately within the complete mechanical and process system.
23. Maintenance Advantages
The drive provides electronic monitoring and diagnostic capabilities that can assist maintenance personnel.
Typical maintenance activities include:
- Checking cooling airflow
- Cleaning ventilation paths
- Inspecting power connections
- Checking cabinet temperature
- Checking network connections
- Inspecting wiring
- Monitoring drive alarms
- Reviewing fault history
- Checking motor connections
- Inspecting fans and cooling components
- Maintaining adequate cabinet ventilation
Large drives should be included in a planned maintenance program rather than being maintained only after a failure occurs.
24. Installation Considerations
The following points should be evaluated before installation:
| Installation Item | Consideration |
|---|---|
| Input Voltage | 690 VAC three-phase system |
| Motor Voltage | Must match the selected motor and drive system |
| Motor Current | Must remain within applicable drive duty rating |
| Cabinet Depth | 800 mm configuration |
| Cooling | Adequate forced-air ventilation required |
| Ambient Temperature | Must remain within applicable drive limits |
| Air Quality | Avoid excessive conductive dust and contamination |
| Cable Routing | Maintain suitable separation and bending radius |
| Grounding | Follow the applicable industrial electrical design |
| Network | EtherNet/IP network planning required where used |
| Service Access | Allow sufficient maintenance clearance |
| Lifting | Confirm actual equipment weight before handling |
| Motor Cable | Check cable type, length, insulation, and installation method |
| Protection | Select suitable upstream protection |
| Motor Data | Enter correct motor nameplate information |
25. Motor Selection
Selecting a motor based only on horsepower or kW is not sufficient.
The following information should be reviewed:
- Motor rated voltage
- Motor rated current
- Motor rated frequency
- Motor rated speed
- Motor power
- Motor service factor
- Motor insulation system
- Motor cooling method
- Motor torque characteristics
- Starting torque
- Load inertia
- Required acceleration time
- Required deceleration time
- Minimum operating speed
- Maximum operating speed
For heavy-duty machinery, the motor current and torque requirements are particularly important.
26. Recommended Same-Series or Closely Related Models
The following models are closely related PowerFlex 755 configurations in the same 690 VAC high-power range.
| Model | Voltage | Current | Light Duty | Normal Duty | Heavy Duty | Frame |
|---|---|---|---|---|---|---|
| 20G1ALF265JN0NNNNN | 690 VAC | 265 A | 315 kW | 250 kW | 200 kW | 8 |
| 20G1ALF330JN0NNNNN | 690 VAC | 330 A | 355 kW | 315 kW | 250 kW | 8 |
| 20G1ALF370JN0NNNNN | 690 VAC | 370 A | 400 kW | 355 kW | 300 kW | 8 |
| 20G1ALF415JN0NNNNN | 690 VAC | 415 A | 450 kW | 400 kW | 355 kW | 8 |
| 20G1ALF460JN0NNNNN | 690 VAC | 460 A | 500 kW | 450 kW | 375 kW | 8 |
| 20G1ALF500JN0NNNNN | 690 VAC | 500 A | 530 kW | 500 kW | 400 kW | 8 |
The 330 A through 500 A models are progressively higher-current members of the same 690 VAC PowerFlex 755 configuration group.
27. Related Model: 20G1ALF330JN0NNNNN
The 20G1ALF330JN0NNNNN increases the rated current to 330 A.
Its stated power ratings are approximately:
- 355 kW Light Duty
- 315 kW Normal Duty
- 250 kW Heavy Duty
It is suitable where the 265 A version does not provide enough current capacity.
| Parameter | Specification |
|---|---|
| Model | 20G1ALF330JN0NNNNN |
| Voltage | 690 VAC |
| Current | 330 A |
| Light Duty | 355 kW |
| Normal Duty | 315 kW |
| Heavy Duty | 250 kW |
| Frame | 8 |
| Cooling | Air cooled |
| Input | AC input with precharge |
| DC Terminals | None |
| Mechanical Style | 800 mm deep MCC style |
| Approx. Planning Dimensions | Approximately 600 W × 2450 H × 800 D mm |
| Weight | Confirm exact weight from mechanical documentation |
28. Related Model: 20G1ALF370JN0NNNNN
The 20G1ALF370JN0NNNNN provides a 370 A current rating.
Its stated duty ratings are approximately:
- 400 kW Light Duty
- 355 kW Normal Duty
- 300 kW Heavy Duty
This model can be considered for applications requiring greater current and motor capacity than the 265 A and 330 A versions.
| Parameter | Specification |
|---|---|
| Model | 20G1ALF370JN0NNNNN |
| Voltage | 690 VAC |
| Current | 370 A |
| Light Duty | 400 kW |
| Normal Duty | 355 kW |
| Heavy Duty | 300 kW |
| Frame | 8 |
| Cooling | Air cooled |
| Input | AC input with precharge |
| DC Terminals | None |
| Mechanical Style | 800 mm deep MCC style |
| Approx. Planning Dimensions | Approximately 600 W × 2450 H × 800 D mm |
| Weight | Confirm exact weight from mechanical documentation |
29. Related Model: 20G1ALF415JN0NNNNN
The 20G1ALF415JN0NNNNN provides 415 A rated current.
Its stated duty ratings are approximately:
- 450 kW Light Duty
- 400 kW Normal Duty
- 355 kW Heavy Duty
This model is appropriate for larger motor systems where the current requirement exceeds the 370 A configuration.
| Parameter | Specification |
|---|---|
| Model | 20G1ALF415JN0NNNNN |
| Voltage | 690 VAC |
| Current | 415 A |
| Light Duty | 450 kW |
| Normal Duty | 400 kW |
| Heavy Duty | 355 kW |
| Frame | 8 |
| Cooling | Air cooled |
| Input | AC input with precharge |
| DC Terminals | None |
| Mechanical Style | 800 mm deep MCC style |
| Approx. Planning Dimensions | Approximately 600 W × 2450 H × 800 D mm |
| Weight | Confirm exact weight from mechanical documentation |
30. Related Model: 20G1ALF460JN0NNNNN
The 20G1ALF460JN0NNNNN is rated at 460 A.
Its stated duty ratings are approximately:
- 500 kW Light Duty
- 450 kW Normal Duty
- 375 kW Heavy Duty
It is intended for larger 690 VAC motor applications requiring additional current capacity.
| Parameter | Specification |
|---|---|
| Model | 20G1ALF460JN0NNNNN |
| Voltage | 690 VAC |
| Current | 460 A |
| Light Duty | 500 kW |
| Normal Duty | 450 kW |
| Heavy Duty | 375 kW |
| Frame | 8 |
| Cooling | Air cooled |
| Input | AC input with precharge |
| DC Terminals | None |
| Mechanical Style | 800 mm deep MCC style |
| Approx. Planning Dimensions | Approximately 600 W × 2450 H × 800 D mm |
| Weight | Confirm exact weight from mechanical documentation |
31. Related Model: 20G1ALF500JN0NNNNN
The 20G1ALF500JN0NNNNN is rated at 500 A.
Its stated duty ratings are approximately:
- 530 kW Light Duty
- 500 kW Normal Duty
- 400 kW Heavy Duty
This is a higher-capacity member of the same 690 VAC configuration group.
| Parameter | Specification |
|---|---|
| Model | 20G1ALF500JN0NNNNN |
| Voltage | 690 VAC |
| Current | 500 A |
| Light Duty | 530 kW |
| Normal Duty | 500 kW |
| Heavy Duty | 400 kW |
| Frame | 8 |
| Cooling | Air cooled |
| Input | AC input with precharge |
| DC Terminals | None |
| Mechanical Style | 800 mm deep MCC style |
| Approx. Planning Dimensions | Approximately 600 W × 2450 H × 800 D mm |
| Weight | Confirm exact weight from mechanical documentation |
32. Same-Brand Reference Models
For comparison purposes, the following five Allen-Bradley models are useful reference products from the same broader PowerFlex family.
These are presented as related/reference models rather than as a ranking.
| Model | Product Family | Typical Voltage Class | Main Application Position | Key Parameter |
|---|---|---|---|---|
| 20G1ANF061JN0NNNNN | PowerFlex 755 | 690 VAC | Medium-power motor control | 61 A |
| 20G1ANF098JN0NNNNN | PowerFlex 755 | 690 VAC | Medium-power motor control | 98 A |
| 20G1ANF142JN0NNNNN | PowerFlex 755 | 690 VAC | Higher-power motor control | 142 A |
| 20G1ANE099JN0NNNNN | PowerFlex 755 | 600 VAC | Industrial motor control | 99 A |
| 21G1ABF265JN2NNNNN | PowerFlex 755 packaged configuration | 690 VAC | Packaged high-power drive | 265 A |
The 20G1ANF models represent smaller 690 VAC PowerFlex 755 configurations, while the 20G1ANE model belongs to the 600 VAC voltage class. The 21G1ABF265JN2NNNNN is a packaged configuration with a different mechanical arrangement from the requested 20G1ALF265JN0NNNNN.
33. Same-Brand Reference Model Comparison
| Model | Voltage | Current | Duty / Power Reference | Cooling | Frame / Configuration |
|---|---|---|---|---|---|
| 20G1ANF061JN0NNNNN | 690 VAC | 61 A | 55 kW ND / 45 kW HD | Air cooled | Frame 6 |
| 20G1ANF098JN0NNNNN | 690 VAC | 98 A | 90 kW ND / 75 kW HD | Air cooled | Frame 6 |
| 20G1ANF142JN0NNNNN | 690 VAC | 142 A | 132 kW ND / 110 kW HD | Air cooled | Frame 7 |
| 20G1ANE099JN0NNNNN | 600 VAC | 99 A | 100 HP ND / 75 HP HD | Air cooled | Frame 6 |
| 21G1ABF265JN2NNNNN | 690 VAC | 265 A | 250 kW ND | Air cooled | Frame 8 packaged |
34. Difference Between the Requested Model and Related Models
The main difference among the 690 VAC ALF models is current capacity.
| Model | Current | Normal Duty | Heavy Duty |
|---|---|---|---|
| 20G1ALF265JN0NNNNN | 265 A | 250 kW | 200 kW |
| 20G1ALF330JN0NNNNN | 330 A | 315 kW | 250 kW |
| 20G1ALF370JN0NNNNN | 370 A | 355 kW | 300 kW |
| 20G1ALF415JN0NNNNN | 415 A | 400 kW | 355 kW |
| 20G1ALF460JN0NNNNN | 460 A | 450 kW | 375 kW |
| 20G1ALF500JN0NNNNN | 500 A | 500 kW | 400 kW |
The models therefore form a practical capacity range for large 690 VAC motor applications.
The appropriate selection should be based on actual motor current, load torque, duty cycle, overload requirements, environmental conditions, and installation configuration.
35. Applications by Industry
The 20G1ALF265JN0NNNNN can be considered for a broad range of industries.
Water and Wastewater
- Large water pumps
- Transfer pumps
- Process pumps
- Circulation systems
- Water-treatment equipment
- Cooling-water systems
Manufacturing
- Production conveyors
- Material-handling equipment
- Process machinery
- Large fans
- Industrial pumps
- Mixers
Mining and Bulk Material Handling
- Heavy conveyors
- Crushers
- Material feeders
- Large ventilation equipment
- Transfer systems
Chemical Processing
- Pumps
- Mixers
- Agitators
- Fans
- Process machinery
Cement and Building Materials
- Conveyors
- Fans
- Blowers
- Material-handling machinery
- Process equipment
General Industrial Utilities
- Cooling systems
- Ventilation systems
- Large pumps
- Compressors
- Utility machinery
36. Advantages for Pump Systems
For pump applications, the main benefits of variable-speed control include:
- Adjustable flow
- Adjustable pressure
- Controlled acceleration
- Reduced mechanical shock
- Improved process regulation
- Centralized monitoring
- Networked control
- Flexible operating speed
The drive can be connected to pressure, flow, or process-control systems so that pump speed follows actual demand.
37. Advantages for Fan Systems
For fan and blower systems, the drive can provide:
- Adjustable airflow
- Controlled acceleration
- Process-based speed regulation
- Reduced unnecessary full-speed operation
- Centralized monitoring
- Network communication
- Improved process flexibility
Large industrial ventilation systems can particularly benefit from adjustable speed when the airflow requirement changes throughout the production cycle.
38. Advantages for Conveyor Systems
For conveyors, controlled motor operation can help with:
- Smooth starting
- Smooth stopping
- Reduced belt shock
- Controlled speed
- Process synchronization
- Reduced mechanical stress
- Improved material handling
For high-inertia conveyors, acceleration and deceleration settings should be carefully engineered according to the actual mechanical system.
39. Advantages for High-Inertia Loads
High-inertia equipment requires careful acceleration and deceleration.
Examples include:
- Large fans
- Large blowers
- Centrifuges
- Large conveyors
- Heavy rotating machinery
The drive can control the rate at which the motor changes speed.
This provides a significant advantage compared with uncontrolled direct-on-line starting.
40. Control System Advantages
The embedded EtherNet/IP capability makes the drive suitable for networked automation architectures.
A control system can potentially monitor:
- Drive status
- Motor speed
- Motor current
- Output frequency
- Fault conditions
- Warning conditions
- Operating commands
This allows the drive to become part of a coordinated automation system rather than functioning as an isolated motor controller.
41. Electrical System Advantages
The 690 VAC configuration is suited to large motor systems.
At high power levels, using a higher motor voltage can help keep motor current within manageable levels.
The 265 A rating provides substantial current capacity while retaining the general PowerFlex 755 architecture.
The AC input with precharge and no external DC terminals also provides a clearly defined electrical configuration for systems designed around individual AC-fed drives.
42. Mechanical System Advantages
The drive can contribute to mechanical-system control through:
- Soft starting
- Controlled acceleration
- Controlled deceleration
- Adjustable speed
- Process synchronization
- Reduced sudden torque changes
These functions can help reduce stress on mechanical components when correctly configured.
43. Product Selection Checklist
Before purchasing or replacing the 20G1ALF265JN0NNNNN, check the following:
| Selection Item | Required Check |
|---|---|
| Motor Voltage | Confirm compatibility with 690 VAC-class motor |
| Motor Current | Confirm motor FLA is suitable for the selected duty |
| Motor Power | Check against LD / ND / HD rating |
| Duty | Determine whether application is LD, ND, or HD |
| Starting Torque | Evaluate actual mechanical starting requirement |
| Load Inertia | Determine acceleration requirement |
| Overload | Confirm required overload profile |
| Input System | Confirm 690 VAC three-phase supply |
| Cabinet | Confirm 800 mm deep mechanical arrangement |
| Cooling | Verify airflow and heat dissipation |
| Network | Confirm EtherNet/IP requirements |
| HIM | Confirm whether local HIM is required |
| Braking | Confirm whether dynamic braking is required |
| DC Bus | Confirm application does not require external DC terminals |
| Dimensions | Verify exact mechanical drawing |
| Weight | Verify exact shipping/lifting weight |
| Cable | Confirm motor and input cable requirements |
| Protection | Confirm upstream protective equipment |
| Environment | Verify temperature, humidity, altitude, and contamination |
44. Replacement Considerations
When replacing an existing drive, the replacement should not be selected only by matching the motor horsepower.
The following items should be matched:
- Input voltage.
- Motor voltage.
- Motor current.
- Duty rating.
- Overload requirement.
- Enclosure configuration.
- Cooling arrangement.
- Physical dimensions.
- Cable entry arrangement.
- Communication requirements.
- Braking requirements.
- HIM requirements.
- Filtering configuration.
- Common-mode configuration.
- Installation environment.
- Cabinet depth.
- Maintenance access.
- Existing automation-system compatibility.
The model number should therefore be checked character by character when replacing an existing unit.
45. Why the 20G1ALF265JN0NNNNN Is a High-Power Configuration
The 265 A rating combined with the 690 VAC supply places this model in the high-power range of the PowerFlex 755 family.
The drive is intended for applications where smaller frame sizes and lower-current drive configurations are not sufficient.
Its 315 kW light-duty, 250 kW normal-duty, and 200 kW heavy-duty ratings provide flexibility across different types of machinery.
This makes the model suitable for large industrial motor-control systems where electrical capacity, network communication, controlled acceleration, and process regulation are important.
46. Detailed Product Specification Summary
| Specification | 20G1ALF265JN0NNNNN |
|---|---|
| Brand | Allen-Bradley |
| Series | PowerFlex 755 |
| Product | PowerFlex 755 AC Drive |
| Model | 20G1ALF265JN0NNNNN |
| Voltage | 690 VAC |
| Phase | 3 Phase |
| Current | 265 A |
| Light Duty | 315 kW |
| Normal Duty | 250 kW |
| Heavy Duty | 200 kW |
| Frame | 8 |
| Cooling | Air cooled |
| Input | AC input with precharge |
| External DC Terminals | None |
| Communication | Embedded EtherNet/IP |
| Enclosure | Type 1 / IP20 |
| Mechanical Configuration | 800 mm deep MCC style |
| Filtering | Filtered |
| CM Jumper | Installed |
| Dynamic Braking | None |
| HIM | Blank / no HIM |
| Approx. Planning Width | 600 mm |
| Approx. Planning Height | 2450 mm |
| Depth | 800 mm configuration |
| Approx. Planning Weight | Approximately 100 kg class |
| Certified Dimensions | Confirm with exact mechanical drawing |
| Certified Weight | Confirm with exact mechanical/shipping documentation |
| Main Applications | Pumps, fans, conveyors, compressors, mixers, process machinery |
| Installation | Industrial indoor application |
47. Final Comparison of the Five Closely Related Models
| Model | Voltage | Current | LD | ND | HD | Frame |
|---|---|---|---|---|---|---|
| 20G1ALF265JN0NNNNN | 690 VAC | 265 A | 315 kW | 250 kW | 200 kW | 8 |
| 20G1ALF330JN0NNNNN | 690 VAC | 330 A | 355 kW | 315 kW | 250 kW | 8 |
| 20G1ALF370JN0NNNNN | 690 VAC | 370 A | 400 kW | 355 kW | 300 kW | 8 |
| 20G1ALF415JN0NNNNN | 690 VAC | 415 A | 450 kW | 400 kW | 355 kW | 8 |
| 20G1ALF460JN0NNNNN | 690 VAC | 460 A | 500 kW | 450 kW | 375 kW | 8 |
| 20G1ALF500JN0NNNNN | 690 VAC | 500 A | 530 kW | 500 kW | 400 kW | 8 |
48. Final Product Description
The Allen-Bradley 20G1ALF265JN0NNNNN PowerFlex 755 AC Drive is a high-power 690 VAC, three-phase variable-frequency drive with a 265 A current rating and Frame 8 construction.
The drive is configured for air-cooled operation, AC input with precharge, no external DC terminals, embedded EtherNet/IP communication, and an 800 mm deep MCC-style mechanical arrangement.
Its stated power ratings are 315 kW for Light Duty, 250 kW for Normal Duty, and 200 kW for Heavy Duty.
The drive is intended for large industrial motor-control applications where controlled speed, controlled acceleration, process regulation, network communication, and high electrical capacity are required.
Typical applications include large pumps, fans, blowers, conveyors, compressors, mixers, material-handling equipment, and process machinery.
The 20G1ALF265JN0NNNNN is also part of a larger 690 VAC high-power configuration group that includes 330 A, 370 A, 415 A, 460 A, and 500 A versions.
When selecting between these models, the key factors are motor current, motor power, duty classification, overload requirement, starting torque, mechanical inertia, operating speed, environmental conditions, cabinet arrangement, and communication requirements.
For engineering drawings, cabinet fabrication, shipping, lifting, and floor-loading calculations, the exact mechanical documentation for the individual drive configuration should be used rather than relying on approximate dimensions or weight.