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Allen-Bradley 20G1ABF500AN0NNNNN PowerFlex 755 AC Drive
1. Product Identification
The Allen-Bradley 20G1ABF500AN0NNNNN is a high-power PowerFlex 755 AC Drive designed for large three-phase industrial motor applications.
It is a 690 VAC, 500 A, Frame 8, air-cooled AC drive with a high-power rating of 530 kW for Light Duty, 500 kW for Normal Duty, and 400 kW for Heavy Duty.
The drive is configured for AC input with precharge and no DC terminals, and it uses a 600 mm deep MCC-style enclosure configuration with Type 1 / IP20 protection characteristics.
The catalog configuration includes embedded EtherNet/IP, EMC filtering, a removed common-mode capacitor jumper, no dynamic braking, and a blank configuration without a HIM.
The exact requested catalog number is a legacy A-version configuration. Its listed lifecycle status is discontinued, with the direct replacement identified as 20G1ABF500JN0NNNNN. The discontinuation date listed for the A-version is June 30, 2024.
For existing equipment, therefore, 20G1ABF500AN0NNNNN should be treated as an existing/legacy PowerFlex 755 configuration rather than as a currently preferred new-project catalog selection.
2. Basic Product Parameters
| Parameter | Specification |
|---|---|
| Brand | Allen-Bradley |
| Product Series | PowerFlex 755 |
| Product Type | High-Power AC Drive / Variable Frequency Drive |
| Catalog Number | 20G1ABF500AN0NNNNN |
| Drive Family | PowerFlex 755 AC Drive |
| Voltage Class | 690 VAC |
| Input Phase | Three Phase |
| Rated Current | 500 A |
| Light-Duty Rating | 530 kW |
| Normal-Duty Rating | 500 kW |
| Heavy-Duty Rating | 400 kW |
| Frame Size | Frame 8 |
| Cooling | Forced Air / Air Cooled |
| Input Type | AC Input with Precharge |
| DC Terminals | None |
| Dynamic Braking | None |
| Filtering | EMC Filter |
| CM Jumper | Removed |
| Operator Interface | Blank / No HIM |
| Communication | Embedded EtherNet/IP |
| Enclosure Style | Type 1 / IP20 MCC Style |
| MCC Depth | 600 mm |
| Construction | High-Power Industrial Drive |
| Typical Motor Application | Large Three-Phase AC Motors |
| Lifecycle | Discontinued |
| Direct Replacement | 20G1ABF500JN0NNNNN |
The published product configuration identifies the drive as a 500 A, 530 kW LD, 500 kW ND, 400 kW HD, 690 VAC, three-phase, Frame 8, air-cooled PowerFlex 755.
3. Detailed Electrical Parameters
| Electrical Parameter | Specification |
|---|---|
| Model | 20G1ABF500AN0NNNNN |
| Rated Input Voltage | 690 VAC |
| Input System | Three Phase AC |
| Rated Drive Current | 500 A |
| Light-Duty Continuous Rating | 530 kW |
| Normal-Duty Continuous Rating | 500 kW |
| Heavy-Duty Continuous Rating | 400 kW |
| Input Arrangement | AC Input with Precharge |
| DC Input Terminals | No |
| Dynamic Braking | No |
| EMC Filtering | Yes |
| Common-Mode Jumper | Removed |
| Cooling Method | Forced Air |
| Frame | 8 |
| Enclosure Configuration | Type 1 / IP20 |
| MCC Depth | 600 mm |
| Network | Embedded EtherNet/IP |
| HIM | None / Blank |
| Intended Motor Type | Three-Phase AC Motor |
| Power Class | Very High Power |
| Installation Type | MCC / Floor-Standing Industrial Installation |
The 500 A current rating is one of the defining characteristics of this model.
At this power level, the drive is intended for large industrial motors rather than compact machine applications.
4. Power Rating
The 20G1ABF500AN0NNNNN provides three different duty classifications.
| Duty Classification | Power Rating | Typical Load Character |
|---|---|---|
| Light Duty | 530 kW | Relatively smooth or variable-torque loads |
| Normal Duty | 500 kW | General industrial continuous-duty applications |
| Heavy Duty | 400 kW | Higher torque and overload requirements |
These ratings should not be interpreted as three unrelated motor sizes.
They represent different drive-duty capabilities according to the required overload performance and load characteristics.
For example, a 500 kW fan and a 500 kW heavily loaded conveyor do not necessarily impose the same requirements on the drive.
A fan may operate with a comparatively predictable torque profile, while a conveyor can require substantially more torque during acceleration.
Consequently, selecting the drive should be based on the motor’s rated current and the actual machine duty cycle, not simply the motor’s nameplate kW.
5. Light-Duty 530 kW Rating
The 530 kW Light-Duty rating is the highest nominal power figure associated with this model.
This rating is particularly relevant to applications where the motor operates under relatively stable conditions and does not continuously experience severe overload conditions.
Potential applications include:
- Large ventilation fans
- Cooling fans
- Large pumps
- Process circulation systems
- Certain centrifugal machines
- Large variable-torque loads
For these applications, the 530 kW rating provides substantial motor capacity.
6. Normal-Duty 500 kW Rating
The 500 kW Normal-Duty rating makes this model particularly suitable for general high-power industrial machinery.
Normal-duty applications can include:
- Large conveyors
- Pumps
- Fans
- Material-handling systems
- Process machinery
- Industrial production equipment
- Large rotating machinery
The 500 kW Normal-Duty rating also makes the model an important reference point when comparing it with other 500 A PowerFlex 755 configurations.
7. Heavy-Duty 400 kW Rating
The 400 kW Heavy-Duty rating should be considered when the machine has more demanding torque and overload characteristics.
Typical examples may include:
- High-inertia conveyors
- Heavy material-handling equipment
- Large mixers
- Certain crushers
- Heavy industrial processing machines
- Machinery with demanding acceleration
- Machines with significant transient load changes
For these applications, using the 530 kW Light-Duty rating as the sole selection criterion would not be appropriate.
The motor and machine should instead be checked against the 400 kW Heavy-Duty rating and the required overload profile.
8. Product Construction
The 20G1ABF500AN0NNNNN is a Frame 8 PowerFlex 755 drive.
Frame 8 is part of the high-power section of the PowerFlex 755 family.
The physical construction is substantially larger than compact variable-frequency drives used on small motors.
The model is specified as a 600 mm deep MCC-style configuration, making it appropriate for large industrial electrical installations.
This type of construction is particularly useful when the drive needs to be incorporated into an electrical-room or motor-control-center architecture.
The product is not intended to be treated like a small wall-mounted VFD.
Its mechanical installation, lifting, cable routing, ventilation, service clearance, and electrical protection should be planned as part of the overall plant design.
9. Cooling System
The drive uses forced-air cooling.
At a nominal 500 A rating, heat management is an important part of the installation.
The cooling system depends on adequate airflow through the drive and appropriate environmental conditions around the equipment.
The installation should therefore provide:
- Adequate ventilation
- Appropriate ambient temperature
- Clean cooling air
- Sufficient service clearance
- Proper airflow paths
- Suitable cabinet or room ventilation
- Regular cooling-system inspection
Dust accumulation, restricted airflow, blocked ventilation openings, and excessive ambient temperature can all have an adverse effect on high-power drive operation.
For this reason, the cooling system should be considered part of the drive installation rather than simply an internal component of the product.
10. AC Input with Precharge
The 20G1ABF500AN0NNNNN is configured for AC input with precharge.
The drive does not use DC terminals in this configuration.
Precharge is particularly important for high-power drives because the DC-link capacitors can represent a substantial electrical load during energization.
The precharge function controls the initial charging process and helps limit the electrical stress associated with energizing the DC bus.
This configuration is therefore intended for a conventional high-power AC-input drive architecture.
11. EMC Filtering
The model includes an EMC filter configuration.
Electromagnetic compatibility becomes increasingly important in large industrial installations because high-power switching devices can produce high-frequency electrical effects.
The filter configuration can help manage conducted electrical noise and improve compatibility with the surrounding electrical system.
However, the drive filter does not eliminate the need for good installation practices.
The complete installation should still consider:
- Grounding
- Shielding
- Cable routing
- Motor-cable construction
- Cable length
- Cabinet bonding
- Separation of power and control wiring
- Communication-cable installation
- Motor grounding
12. CM Jumper Removed
One of the important configuration characteristics of 20G1ABF500AN0NNNNN is that the common-mode capacitor jumper is removed.
This differentiates it from related J-version configurations where the common-mode jumper may be installed.
The CM configuration can affect the way common-mode currents interact with the electrical system.
Therefore, when replacing this legacy drive, engineers should not automatically assume that a replacement drive with a different CM-jumper configuration is electrically identical in every installation.
The grounding system, motor insulation, cable construction, bearing-current considerations, and EMC requirements should be reviewed before finalizing a replacement configuration.
13. Dynamic Braking
The 20G1ABF500AN0NNNNN is configured with no dynamic braking.
This is suitable for many applications where the machine does not require aggressive deceleration or where the natural mechanical process allows the motor to slow down without substantial regenerative energy.
However, high-inertia machinery should be evaluated carefully.
If the machine needs:
- Very rapid stopping
- Frequent deceleration
- High regenerative energy absorption
- Controlled high-speed stopping
- Rapid reversal
then an appropriate braking architecture should be evaluated separately.
The published configuration identifies Dynamic Braking as None.
14. No HIM Configuration
The requested model has a Blank / No HIM configuration.
This means the standard catalog configuration does not include a local Human Interface Module.
This configuration can be advantageous when the drive is intended to be operated primarily through a centralized control system.
For example:
PLC → EtherNet/IP → PowerFlex 755 → Motor
In such an arrangement, local operator interaction can be handled through an HMI or supervisory system instead of through a drive-mounted interface.
The absence of a HIM can also be desirable where the drive is installed inside a controlled electrical area and local operation is not required.
15. Embedded EtherNet/IP
The 20G1ABF500AN0NNNNN includes embedded EtherNet/IP.
This is an important characteristic for industrial automation.
The drive can be incorporated into a plant-wide network and exchange operating information with the automation system.
Typical data exchanged can include:
- Start/stop commands
- Speed references
- Frequency references
- Actual speed
- Output current
- Drive status
- Fault information
- Alarm information
- Operating conditions
- Diagnostic information
This makes the drive suitable for centralized automation architectures.
16. Product Series
The product belongs to the:
Allen-Bradley PowerFlex 755 Series
The PowerFlex 755 is a high-performance industrial AC-drive platform intended for larger motor-control applications.
The series covers a wide range of voltage and power levels and is commonly used in applications such as pumps, fans, conveyors, and other industrial machinery.
The 690 V version of the family extends into very high power levels, reaching up to approximately 1,500 kW in the broader product range.
17. Brand
| Item | Information |
|---|---|
| Brand | Allen-Bradley |
| Product Family | PowerFlex |
| Series | PowerFlex 755 |
| Product Category | Industrial AC Drive |
| Application Class | High-Power Industrial Motor Control |
| Control Network | EtherNet/IP |
| Voltage Class | 690 VAC |
| Current Class | 500 A |
The Allen-Bradley brand is widely associated with industrial automation equipment, including programmable controllers, operator interfaces, motor-control products, industrial networks, and variable-frequency drives.
For this product, the relevant product-family identification is PowerFlex 755.
18. Main Applications
18.1 Large Pumps
Large industrial pumps are one of the strongest application areas for this type of drive.
Pump systems often do not need to operate continuously at maximum speed.
A variable-frequency drive can regulate motor speed according to process requirements.
Applications may include:
- Raw-water pumps
- Cooling-water pumps
- Process-water pumps
- Industrial circulation pumps
- Water-treatment pumps
- Wastewater pumps
- Large chemical-process pumps
- Industrial cooling systems
The 690 V / 500 A architecture makes the drive suitable for very large pump motors.
19. Large Fans
Large fans can require several hundred kilowatts of motor power.
Examples include:
- Industrial ventilation fans
- Furnace fans
- Exhaust fans
- Cooling fans
- Process-air fans
- Combustion-air fans
- Mine ventilation fans
Variable-speed control allows airflow to be adjusted according to process requirements.
For centrifugal fan applications, this can also provide significant operational advantages because the required shaft power changes substantially with speed.
20. Conveyor Systems
The PowerFlex 755 platform is also well suited to large conveyor applications.
Large conveyors can have significant starting torque requirements.
The drive can provide controlled acceleration rather than simply applying full motor voltage and frequency immediately.
This can reduce mechanical shock and improve the coordination of the conveyor system.
Potential applications include:
- Mining conveyors
- Bulk-material conveyors
- Cement conveyors
- Aggregate conveyors
- Warehouse handling systems
- Process conveyors
- Long-distance belt conveyors
For demanding conveyor applications, the 400 kW Heavy-Duty rating should be used as the appropriate reference where the duty cycle requires it.
21. Mining and Heavy Industry
The 690 V PowerFlex 755 configuration is well suited to many large industrial installations.
Potential heavy-industry applications include:
- Mining
- Mineral processing
- Cement
- Metals
- Paper
- Water treatment
- Material processing
- Industrial manufacturing
The drive’s high current capacity allows it to control large motors without requiring the system to move immediately into a medium-voltage drive architecture.
22. Material Handling
Large material-handling machinery can benefit from variable-speed control.
Examples include:
- Large conveyors
- Feeders
- Transfer systems
- Bulk-material systems
- Industrial handling machinery
- Processing equipment
A networked drive architecture also allows the machine-control system to monitor the motor and drive continuously.
23. Process Machinery
The drive can be applied to large process machines where speed control is important.
Potential applications include:
- Large mixers
- Process fans
- Pumps
- Roll drives
- Production machinery
- Large rotating equipment
- Industrial processing systems
The suitability of the drive should always be verified against actual torque, overload, speed-range, braking, and motor-current requirements.
24. Advantages of the 20G1ABF500AN0NNNNN
24.1 High 500 A Current Capacity
The 500 A rating makes this a substantial industrial drive.
It is intended for motor systems that are well beyond the range of compact machine drives.
This provides a solution for large motors without immediately moving into medium-voltage drive technology.
24.2 530 kW Light-Duty Capability
The 530 kW Light-Duty rating provides substantial motor capacity.
This is particularly useful for high-power variable-torque loads.
24.3 500 kW Normal-Duty Capability
The 500 kW Normal-Duty rating makes the product particularly attractive for general industrial machinery.
It provides a straightforward reference for applications involving approximately 500 kW-class motors where the duty requirements fall within the Normal-Duty rating.
24.4 400 kW Heavy-Duty Capability
The Heavy-Duty rating provides a separate selection reference for more demanding machinery.
This is important for equipment where acceleration and overload requirements are significantly higher.
24.5 690 V Architecture
The 690 V platform is well suited to high-power industrial systems.
Higher motor voltage can help manage current at very high power levels and can influence cable and electrical-distribution design.
24.6 Frame 8 Construction
Frame 8 provides a high-power mechanical and electrical platform.
It is appropriate for large industrial installations where the drive is part of a larger electrical system.
24.7 Embedded EtherNet/IP
The integrated network capability simplifies integration with automation systems.
This is particularly useful in plants where the drive must exchange operational and diagnostic information with a PLC or supervisory control system.
24.8 Air Cooling
Forced-air cooling provides a practical solution for high-power installations where appropriate ventilation is available.
It avoids the need for a separate liquid-cooling infrastructure.
24.9 MCC-Style Construction
The 600 mm MCC-style configuration makes the drive suitable for large electrical rooms and structured motor-control installations.
This can simplify the mechanical organization of large industrial power systems.
25. Dimensions and Weight
The exact mechanical dimensions and shipping weight are configuration-dependent, and the concise product information for this legacy catalog number does not provide a complete certified dimensional and shipping-weight table.
For preliminary engineering and quotation planning, the following figures may be used as approximate planning values only.
| Mechanical Parameter | Approximate Value |
|---|---|
| Model | 20G1ABF500AN0NNNNN |
| Frame | Frame 8 |
| MCC Depth | 600 mm |
| Approx. Width | 600 mm class |
| Approx. Height | 2,000–2,200 mm class |
| Approx. Depth | 600–800 mm class |
| Approx. Overall Envelope | Approximately 2,100 × 600 × 600–800 mm |
| Approx. Weight | Approximately 600–700 kg |
| Cooling | Forced Air |
| Installation | Floor-Standing / MCC Style |
| Enclosure | Type 1 / IP20 |
| Service Access | Front/service clearance required |
| Final Mechanical Reference | Applicable dimensional drawing |
These values should not be used as certified transportation, lifting, foundation, or cabinet-design dimensions.
For an actual project, the applicable dimensional drawing should be used because the final mechanical envelope can depend on the specific drive configuration and installation arrangement.
26. Recommended Same-Series / Related Models
The following five models are useful alternatives or comparison models within the PowerFlex 755 high-power family.
| Model | Series | Voltage | Current | LD | ND | HD | Frame | Cooling | Main Difference |
|---|---|---|---|---|---|---|---|---|---|
| 20G1ABF415AN0NNNNN | PowerFlex 755 | 690 VAC | 415 A | 450 kW | 400 kW | 355 kW | 8 | Air | Lower-current alternative |
| 20G1ABF460AN0NNNNN | PowerFlex 755 | 690 VAC | 460 A | 500 kW | 450 kW | 375 kW | 8 | Air | Lower current than 500 A model |
| 20G1ABF500JN0NNNNN | PowerFlex 755 | 690 VAC | 500 A | 530 kW | 500 kW | 400 kW | 8 | Air | Direct replacement configuration |
| 20G1ABF500AN2NNNNN | PowerFlex 755 | 690 VAC | 500 A | 530 kW | 500 kW | 400 kW | 8 | Air | HIM-equipped configuration |
| 20G1ABF500JN4NNNNN | PowerFlex 755 | 690 VAC | 500 A | 530 kW | 500 kW | 400 kW | 8 | Air | Local/door HIM configuration |
The direct replacement for the requested A-version is 20G1ABF500JN0NNNNN. The main difference is the configuration coding associated with the EMC/common-mode capacitor arrangement.
The 500 A PowerFlex 755 family also includes configurations with a door-mounted HIM and other packaged-drive arrangements.
27. Comparison of the Five Related Models
27.1 20G1ABF415AN0NNNNN
This model is a lower-current 690 V Frame 8 PowerFlex 755 configuration.
With approximately 415 A capacity, it is suitable when the motor’s current and duty requirements do not justify the larger 500 A rating.
It can be a practical choice for motors in the approximately 355–450 kW duty range depending on the application.
27.2 20G1ABF460AN0NNNNN
The 460 A version sits between the 415 A and 500 A models.
Its approximate ratings of 500 kW LD, 450 kW ND, and 375 kW HD make it a useful alternative when the motor current is below the 500 A requirement.
27.3 20G1ABF500JN0NNNNN
This is the most important replacement model to consider for the requested 20G1ABF500AN0NNNNN.
It retains the same basic 500 A, 690 V, Frame 8 power class while representing the later configuration.
For replacement projects, the existing drive’s complete configuration should be compared with the replacement catalog number before ordering.
27.4 20G1ABF500AN2NNNNN
This model is useful where a local operator interface is required.
The core 500 A / 690 V power rating remains in the same range, but the interface arrangement differs.
This can make it more suitable for applications where operators or maintenance engineers need local access.
27.5 20G1ABF500JN4NNNNN
This is another 500 A Frame 8 configuration with a local/door interface arrangement.
It is especially relevant where the drive is installed as part of a larger MCC-style system and local operator access is desirable.
28. Five Popular Allen-Bradley Models for Broader Comparison
The following models represent useful products from the broader Allen-Bradley variable-frequency-drive range.
| Model | Series | Voltage Class | Current Class | Typical Power Class | Product Type | Typical Application |
|---|---|---|---|---|---|---|
| 25B-D030N114 | PowerFlex 525 | 480 VAC class | 30 A class | Medium Power | Compact AC Drive | General machinery |
| 25C-D030N114 | PowerFlex 523 | 480 VAC class | 30 A class | Medium Power | Compact AC Drive | Machine control |
| 20G1ABC302JN4NNNNN | PowerFlex 755 | 480 VAC class | 302 A | High Power | AC Drive | Large machinery |
| 20G1ABC460JN4NNNNN | PowerFlex 755 | 480 VAC class | 460 A | High Power | AC Drive | Pumps, fans, conveyors |
| 20G1ABC650JN4NNNNN | PowerFlex 755 | 480 VAC class | 650 A | Very High Power | AC Drive | Heavy industrial machinery |
These models are not direct replacements for the 20G1ABF500AN0NNNNN.
They are useful comparison products because they represent different drive sizes and application levels.
The PowerFlex 525 and PowerFlex 523 are generally associated with smaller machine applications, while the PowerFlex 755 is intended for larger, more demanding industrial motor-control systems.
29. Product Selection by Application
| Application | Recommended Duty Consideration | Suitability |
|---|---|---|
| Large Centrifugal Pump | LD / ND | Excellent |
| Large Fan | LD / ND | Excellent |
| Cooling Fan | LD / ND | Excellent |
| Large Conveyor | ND / HD | Excellent |
| Mining Conveyor | HD | Excellent |
| Large Mixer | HD | Application dependent |
| Material Handling | ND / HD | Excellent |
| Water Treatment Pump | LD / ND | Excellent |
| Wastewater Pump | LD / ND | Excellent |
| Industrial Ventilation | LD | Excellent |
| Process Machinery | ND / HD | Excellent |
| Crusher | HD | Application dependent |
| Cement Machinery | HD | Application dependent |
| Paper Machinery | ND / HD | Excellent |
| Metals Processing | ND / HD | Excellent |
30. Advantages Compared with Smaller VFDs
The main advantage of the 20G1ABF500AN0NNNNN is its ability to control very large motors while remaining within a low-voltage industrial drive architecture.
A smaller general-purpose drive may be easier to install and less expensive, but it will not provide the required current or power capacity for a 400–500 kW class motor.
The PowerFlex 755 platform provides:
- High current capacity
- High voltage capability
- Multiple duty ratings
- Industrial networking
- Large-frame construction
- High-power cooling
- Advanced control capabilities
- Integration with larger automation systems
This makes it a much better fit for large industrial machinery.
31. Advantages for Plant Standardization
For large industrial facilities, standardization can be just as important as individual drive performance.
Using a common PowerFlex 755 platform across multiple machines can simplify:
- Engineering
- Commissioning
- Maintenance
- Operator training
- Spare-parts management
- Troubleshooting
- Network integration
- Drive replacement
If several large machines use the same general drive platform, maintenance personnel can become familiar with a consistent interface and parameter structure.
32. Advantages of the 500 A Frame 8 Platform
The 500 A Frame 8 platform provides a useful combination of high power and industrial scalability.
It is large enough for major industrial motors while still operating within a 690 V low-voltage architecture.
This makes it attractive for plants where a medium-voltage motor-drive system would be unnecessarily complex but conventional low-power drives are insufficient.
33. Installation Considerations
A 500 A, 690 V drive requires careful engineering.
The installation should consider:
Incoming Power
The incoming electrical system must be compatible with the drive voltage, current, fault level, and protection requirements.
Grounding
Protective grounding and high-frequency bonding should be implemented correctly.
Motor Cable
The motor cable should be selected according to current, insulation, voltage, length, EMC requirements, and installation environment.
Ventilation
Adequate airflow is required for the forced-air cooling system.
Cabinet Arrangement
The physical installation should provide adequate space around the drive for heat dissipation and maintenance.
Maintenance
Service access should be considered before final cabinet or MCC placement.
34. Environmental Considerations
High-power air-cooled drives should be installed in a controlled industrial environment.
Particular attention should be paid to:
- Ambient temperature
- Dust
- Moisture
- Corrosive gases
- Conductive contamination
- Altitude
- Vibration
- Airflow
- Mechanical shock
Dust is especially important for air-cooled systems.
A buildup of contamination can restrict airflow and reduce the efficiency of the cooling system.
35. Maintenance Recommendations
Regular preventive maintenance should include inspection of:
- Cooling fans
- Air passages
- Electrical terminals
- Grounding connections
- Motor cables
- Control wiring
- Network connections
- Cabinet ventilation
- Drive fault history
- Operating temperature
- Visible signs of overheating
- Unusual noise or vibration
Because the model is a large Frame 8 drive, maintenance planning should also include appropriate access for technicians and suitable procedures for safely isolating the equipment.
36. Replacement Considerations
The requested 20G1ABF500AN0NNNNN is a discontinued A-version catalog number.
Its direct replacement is identified as 20G1ABF500JN0NNNNN.
This is important for spare-parts planning.
However, replacing a legacy drive should not be treated as a simple catalog-number substitution.
Before purchasing the replacement, the following should be checked:
- Motor rated current
- Motor power
- Motor voltage
- Duty classification
- Existing HIM requirements
- EMC configuration
- CM-jumper configuration
- Dynamic braking requirements
- Input protection
- Network architecture
- Motor feedback requirements
- Encoder requirements
- Existing parameter settings
- Cabinet dimensions
- Cable entry
- Cooling arrangement
- Installation clearances
- Control-system compatibility
The replacement drive should reproduce the required functions of the original installation rather than simply matching the nominal kW value.
37. Legacy Equipment Identification
If the 20G1ABF500AN0NNNNN is already installed in a plant, its catalog number provides useful information about the original configuration.
The model identifies a:
PowerFlex 755 / 690 V / 500 A / Frame 8 / Air-Cooled / AC Input / 600 mm MCC-style / EMC Filter / CM Jumper Removed / No Dynamic Braking / No HIM
This is useful information when preparing:
- Maintenance documentation
- Spare-parts lists
- Retrofit proposals
- Drive replacement projects
- Electrical drawings
- Equipment databases
- Plant asset records
38. Recommended Selection Procedure
For a new or replacement application, the following sequence is recommended.
Step 1 – Determine Motor Voltage
Confirm that the motor is suitable for the 690 V class.
Step 2 – Determine Motor Current
Compare the motor full-load current against the drive’s rated current.
Step 3 – Determine Duty
Establish whether the application should be evaluated as LD, ND, or HD.
Step 4 – Evaluate Acceleration
Determine whether the machine has high inertia or high breakaway torque.
Step 5 – Evaluate Deceleration
Determine whether dynamic braking or another braking method is required.
Step 6 – Determine Interface Requirements
Decide whether local HIM access is required.
Step 7 – Determine Network Requirements
Confirm EtherNet/IP and the required automation architecture.
Step 8 – Verify Mechanical Installation
Check dimensions, depth, cable routing, ventilation, lifting, and service access.
Step 9 – Verify Environmental Conditions
Check temperature, humidity, dust, altitude, and other environmental factors.
Step 10 – Confirm Replacement Configuration
For legacy equipment, compare the complete original configuration with the replacement catalog number.
39. Key Technical Advantages at a Glance
| Feature | Advantage |
|---|---|
| 690 VAC | Suitable for large industrial motor systems |
| 500 A | High motor-current capacity |
| 530 kW LD | Very high variable-torque capacity |
| 500 kW ND | Strong general industrial rating |
| 400 kW HD | Suitable for demanding loads |
| Frame 8 | High-power industrial construction |
| Forced Air | Practical thermal-management method |
| 600 mm MCC Style | Suitable for large electrical installations |
| EMC Filter | Supports electromagnetic compatibility |
| CM Jumper Removed | Defined common-mode configuration |
| AC Precharge | Suitable high-power AC-input architecture |
| No DC Terminals | Dedicated AC-input configuration |
| EtherNet/IP | Automation-network integration |
| No HIM | Suitable for centralized-control installations |
| No Dynamic Braking | Simple configuration where rapid braking is not required |
| PowerFlex 755 | Established high-power drive platform |
40. Overall Product Evaluation
The Allen-Bradley 20G1ABF500AN0NNNNN is a high-power PowerFlex 755 AC drive intended for large industrial motor applications.
Its defining characteristics are its 690 VAC three-phase rating, 500 A current capacity, 530 kW Light-Duty rating, 500 kW Normal-Duty rating, 400 kW Heavy-Duty rating, Frame 8 construction, forced-air cooling, 600 mm MCC-style configuration, EMC filtering, removed CM jumper, embedded EtherNet/IP, no dynamic braking, and no HIM.
This combination makes the drive suitable for large pumps, fans, conveyors, process machinery, material-handling equipment, water-treatment systems, mining machinery, and other large industrial rotating equipment.
The product’s strongest technical advantage is its ability to combine very high motor power with a low-voltage 690 V industrial drive architecture.
The 500 A rating provides substantial capacity, while the three duty classifications allow the engineer to match the drive to the actual load profile.
The product should not, however, be selected simply because the motor is approximately 500 kW.
The most important selection parameters are motor current, duty cycle, acceleration torque, overload requirements, speed range, braking requirements, environmental conditions, and control-system architecture.
For existing installations, the model remains particularly important because it identifies a specific legacy PowerFlex 755 configuration.
For new replacement work, the direct replacement 20G1ABF500JN0NNNNN should be evaluated.
For applications that require local operator access, the HIM-equipped 500 A configurations should also be considered.
41. Final Technical Summary
| Category | Specification |
|---|---|
| Brand | Allen-Bradley |
| Series | PowerFlex 755 |
| Model | 20G1ABF500AN0NNNNN |
| Product Type | High-Power AC Variable Frequency Drive |
| Voltage | 690 VAC |
| Phase | Three Phase |
| Rated Current | 500 A |
| Light Duty | 530 kW |
| Normal Duty | 500 kW |
| Heavy Duty | 400 kW |
| Frame | Frame 8 |
| Cooling | Forced Air |
| Input | AC with Precharge |
| DC Terminals | None |
| EMC Filter | Yes |
| CM Jumper | Removed |
| Dynamic Braking | None |
| HIM | Blank / No HIM |
| Communication | Embedded EtherNet/IP |
| Enclosure | Type 1 / IP20 |
| MCC Depth | 600 mm |
| Approx. Width | 600 mm class |
| Approx. Height | 2,000–2,200 mm class |
| Approx. Depth | 600–800 mm class |
| Approx. Overall Size | Approximately 2,100 × 600 × 600–800 mm |
| Approx. Weight | Approximately 600–700 kg |
| Installation | MCC / Floor Standing |
| Main Applications | Pumps, Fans, Conveyors, Process Machinery, Material Handling |
| Industrial Level | High-Power |
| Lifecycle | Discontinued |
| Direct Replacement | 20G1ABF500JN0NNNNN |
| Main Advantage | High-power 690 V motor control with industrial network integration |
Final engineering note: the dimensional and weight figures above are approximate planning values rather than certified factory shipping dimensions or shipping weight. For cabinet design, transportation, lifting, foundation loading, and final installation, the applicable dimensional drawing and project-specific configuration should be used.