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The Allen-Bradley 20G1F3C650LNANNNNN is a high-power PowerFlex 755 AC Drive designed for demanding industrial motor-control applications.
It is an air-cooled, AFE regenerative, three-phase AC drive in the 400 V class and uses a Frame 8C power section. The catalog information identifies the unit with an input type of AFE Regenerative, a current specification of approximately 698 A, and a 400 V AC rating.
This model belongs to the large-frame end of the PowerFlex 755 family. It is intended for applications where the motor is considerably larger than those normally served by compact variable-frequency drives.
The model is particularly relevant to heavy industrial machinery, large conveyors, pumps, fans, compressors, process equipment, material-handling systems and other equipment requiring high-current variable-speed motor control.
The catalog family also contains closely related 650 A configurations, including 20G1F3C650KNANNNNN, 20G1F3C650LNDNNNNN, and several versions with additional option suffixes. This makes the complete catalog number important when selecting a replacement or comparing equipment.
| Item | Information |
|---|---|
| Model | 20G1F3C650LNANNNNN |
| Brand | Allen-Bradley |
| Product Family | PowerFlex |
| Product Series | PowerFlex 755 |
| Product Type | AC Variable Frequency Drive |
| Drive Configuration | Air-Cooled AC Drive |
| Input Type | AFE Regenerative |
| Frame | Frame 8C |
| Voltage Class | 400 V AC |
| Phase | Three Phase |
| Current Class | 650 A / approximately 698 A catalog current |
| Cooling | Air Cooled |
| Application Level | Large Industrial Motor Control |
| Installation | Industrial Floor/Cabinet Installation |
| Product Status | Discontinued catalog configuration |
The exact model is identified as a PowerFlex 755 AC Drive, with AFE regenerative input, 400 V AC, and Frame 8C. The catalog record also identifies the product as discontinued, with a direct replacement catalog number available in the newer product generation.
| Parameter | Specification |
|---|---|
| Model | 20G1F3C650LNANNNNN |
| Brand | Allen-Bradley |
| Series | PowerFlex 755 |
| Product Type | AC Drive |
| Drive Construction | Air Cooled |
| Input Type | AFE Regenerative |
| Input Voltage | 400 V AC |
| Input Phase | 3 Phase |
| Catalog Current | Approximately 698 A |
| Nominal Size | 650 A class |
| Frame Size | 8C |
| Drive Technology | Variable-Frequency AC Motor Control |
| Regenerative Operation | Yes |
| Dynamic Braking | Configuration-dependent; regenerative architecture is used |
| Installation | Industrial floor/cabinet type |
| Cooling Method | Forced Air Cooling |
| Motor Type | Three-Phase AC Motor |
| Control Architecture | PowerFlex 755 |
| Dimensions | Configuration-dependent; see mechanical-design note below |
| Weight (kg) | Configuration-dependent; verify exact mechanical documentation |
The catalog information for the exact model gives 698 A at 400 V AC and identifies the frame as 8C. A closely corresponding 650 A configuration is specified as 650 A with 355 kW normal-duty and 315 kW heavy-duty ratings, illustrating the rating range associated with this configuration family.
One detail worth explaining is the difference between the catalog number and the current value shown in different technical records.
The model number contains the 650 current-size designation:
20G1F3C650LNANNNNN
The detailed product record for the exact base catalog number lists 698 A as the current specification, while the corresponding configured 650 A product record identifies the drive size as 650 A.
This is not a good reason to treat the two numbers as interchangeable motor ratings.
For engineering selection, the actual drive rating should be evaluated using the applicable duty class, motor nameplate current, overload requirements, ambient conditions, carrier frequency, application duty cycle and complete catalog configuration.
The safest practice is to use the complete catalog number and the applicable technical data when selecting a replacement.
One of the most important characteristics of the 20G1F3C650LNANNNNN is its AFE regenerative input.
AFE stands for Active Front End.
A regenerative drive is particularly useful when the driven machine frequently returns energy to the drive during deceleration or when the load is capable of driving the motor.
Instead of treating all regenerated energy simply as heat through a braking resistor, regenerative architecture can return suitable energy back toward the AC supply.
This makes the configuration particularly interesting for applications with frequent deceleration, overhauling loads or significant regenerative energy.
Typical examples include:
The exact model is explicitly identified as AFE Regenerative, making this an important distinction from conventional non-regenerative PowerFlex configurations.
| Electrical Parameter | Specification |
|---|---|
| Model | 20G1F3C650LNANNNNN |
| Input Voltage | 400 V AC |
| Input Phase | 3 Phase |
| Current | Approximately 698 A |
| Catalog Size | 650 A |
| Input Type | AFE Regenerative |
| Frame | 8C |
| Motor Output | Three-phase variable-frequency output |
| Motor Control | Variable-speed AC motor control |
| Frequency Control | Programmable |
| Acceleration | Programmable |
| Deceleration | Programmable |
| Torque Control | Supported by PowerFlex 755 control architecture |
| Regenerative Operation | Yes |
| Cooling | Air cooled |
| Dynamic Braking | Not the primary energy-management method for regenerative operation |
| Motor Protection | Available through drive control functions |
| Feedback | Configuration-dependent |
| Communication | Configuration-dependent |
| EMC/Filtering | Configuration-dependent |
| Enclosure | Configuration-dependent |
| Dimensions | Configuration-dependent |
| Weight (kg) | Configuration-dependent |
A corresponding 650 A configuration in the same product family is listed with approximately:
| Duty Rating | Approximate Rating |
|---|---|
| Model | 20G1F3C650LNANNNNN |
| Normal Duty | 355 kW |
| Heavy Duty | 315 kW |
| Current Size | 650 A |
| Input Voltage | 400 V AC |
| Phase | 3 Phase |
| Frame | 8C |
| Cooling | Air Cooled |
| Dimensions | Configuration-dependent |
| Weight (kg) | Configuration-dependent |
These duty ratings are associated with the 650 A PowerFlex 755 configuration family. They should be treated as selection references rather than as a substitute for checking the exact motor nameplate and application duty.
The 20G1F3C650LNANNNNN is a large-frame industrial drive.
The Frame 8C designation indicates that this is not a compact wall-mounted inverter. It belongs to the larger PowerFlex 755 mechanical platform intended for high-current applications.
The physical installation therefore needs to take into account:
For this exact catalog number, it is not advisable to publish an invented fixed width, height, depth or weight.
The available product records confirm the Frame 8C classification, but the precise mechanical arrangement can depend on the packaged configuration and associated options.
| Mechanical Parameter | Specification |
|---|---|
| Model | 20G1F3C650LNANNNNN |
| Frame | 8C |
| Width | Configuration-dependent |
| Height | Configuration-dependent |
| Depth | Configuration-dependent |
| Overall Size | Must be confirmed from exact mechanical drawing |
| Mounting Arrangement | Large-frame industrial installation |
| Cooling | Air cooled |
| Net Weight (kg) | Configuration-dependent |
| Shipping Weight (kg) | Configuration-dependent |
| Mounting Hole Pattern | Confirm from mechanical drawing |
| Lifting Requirements | Confirm before handling |
| Service Clearance | Required |
| Cabinet Clearance | Application-dependent |
For a large 650 A drive, the mechanical drawing is more useful than a generic family dimension because cabinet versions, options and packaged-drive arrangements can change the final footprint.
A secondary listing that reports an exact product weight of zero should not be treated as a real physical weight; such values are clearly catalog/database placeholders rather than meaningful engineering data. For this reason, the weight above is deliberately identified as configuration-dependent rather than giving a fabricated figure.
The drive uses an air-cooled architecture.
High-current semiconductor components generate substantial heat during operation, especially under continuous industrial loads.
The cooling system therefore has a direct influence on drive reliability.
The installation should provide:
If the drive is installed in an enclosure, the enclosure design must account for the heat generated by the drive and any other equipment installed nearby.
The 20G1F3C650LNANNNNN is well suited to large conveyor systems where the motor requires high current and controlled acceleration.
Conveyors used in mining, cement, steel, ports, bulk handling and heavy manufacturing can involve substantial mechanical inertia.
Controlled acceleration can reduce the mechanical shock associated with starting a large conveyor.
Mining machinery frequently uses large motors for:
The high-current PowerFlex 755 architecture is appropriate for applications where large motors and industrial automation are involved.
Cement production contains many large rotating machines.
Possible applications include:
Variable-speed control can be used to match machine operation to process requirements.
Large pumps are another important application.
Examples include:
Variable-speed operation can provide better control than operating a motor continuously at one fixed speed.
Large fans and blowers can consume substantial amounts of energy when operated at full speed.
A variable-frequency drive allows the motor speed to be adjusted according to the actual process requirement.
This makes the PowerFlex 755 platform suitable for many industrial ventilation and air-moving systems.
Large compressors can require considerable starting torque and controlled acceleration.
The drive can provide programmable acceleration and speed control when the compressor and motor are suitable for variable-frequency operation.
The regenerative nature of this model is particularly relevant to applications where the load can drive the motor during lowering or deceleration.
Potential applications include:
For such applications, the complete braking, safety and mechanical system must still be engineered separately.
The drive can also be considered for:
The actual suitability depends on the motor, load profile and required control performance.
The 650 A class makes the model suitable for large industrial motors.
This is one of the most important differences between this model and smaller PowerFlex drives.
It can be considered where a compact inverter does not have sufficient current capacity.
AFE regenerative technology is one of the defining characteristics of this configuration.
When the load regenerates energy during deceleration, the drive architecture can handle this energy through its active front end rather than relying solely on traditional resistor-based braking.
This can be particularly valuable for high-inertia and overhauling-load applications.
The PowerFlex 755 platform is designed for industrial applications requiring more flexibility than a simple basic inverter.
Depending on the configuration, the platform can support different control, feedback and communication arrangements.
This makes it adaptable to complex automation systems.
Large motors can create substantial mechanical stress when started abruptly.
A variable-frequency drive allows the acceleration profile to be programmed.
This can reduce sudden mechanical loading on:
Deceleration is particularly important for high-inertia machinery.
The drive can control how quickly the motor slows down rather than simply disconnecting the motor from the supply.
In regenerative applications, the energy-management capability becomes even more important.
The PowerFlex 755 family is designed to operate as part of a broader automation system.
Depending on the installed configuration, the drive can exchange operating commands, status information, feedback and diagnostic information with other automation equipment.
A single product family can cover many types of machinery.
This makes the PowerFlex 755 architecture useful in plants where different large motors are controlled through a common drive platform.
| Feature | Practical Benefit |
|---|---|
| AFE Regenerative Input | Allows regenerative energy to be managed through the active front end |
| High Current | Suitable for large motors |
| Variable Speed | Allows motor speed to follow process demand |
| Controlled Acceleration | Reduces mechanical starting shock |
| Controlled Deceleration | Improves stopping control |
| Large Frame | Designed for high-power industrial applications |
| Air Cooling | Suitable for industrial high-power installations |
| Flexible Control | Supports demanding motor-control requirements |
| Automation Integration | Can operate within larger control systems |
| Industrial Construction | Intended for continuous industrial service |
| Industry | Example Equipment | Typical Requirement |
|---|---|---|
| Mining | Conveyors, feeders, pumps | High-current motor control |
| Cement | Fans, conveyors, process equipment | Large motor operation |
| Steel | Production lines, fans, conveyors | Heavy-duty speed control |
| Water | Pumps, blowers | Variable-speed operation |
| Chemical | Pumps, mixers, fans | Process control |
| Oil & Gas | Pumps and rotating equipment | Controlled motor operation |
| Ports | Conveyors, cranes, material handling | High torque and controlled speed |
| Manufacturing | Large production machinery | Process-speed control |
| Utilities | Pumps and fans | Continuous operation |
| Material Handling | Conveyors, hoists | Acceleration/deceleration control |
The following models are closely related to 20G1F3C650LNANNNNN and are useful for comparison or replacement evaluation.
| Model | Product Family | Current Class | Voltage Class | Configuration | Cooling | Dimensions | Weight (kg) |
|---|---|---|---|---|---|---|---|
| 20G1F3C585LNANNNNN | PowerFlex 755 | 585 A class | 400 V | Air-Cooled AC Drive | Air cooled | Configuration-dependent | Configuration-dependent |
| 20G1F3C650KNANNNNN | PowerFlex 755 | 650 A class | 400 V | Air-Cooled AC Packaged Drive | Air cooled | Configuration-dependent | Configuration-dependent |
| 20G1F3C650LNDNNNNN | PowerFlex 755 | 650 A class | 400 V | Air-Cooled AC Packaged Drive | Air cooled | Configuration-dependent | Configuration-dependent |
| 20G1F3C650MNANNNNN | PowerFlex 755 | 650 A class | 400 V class | Air-Cooled AC Drive | Air cooled | Configuration-dependent | Configuration-dependent |
| 20G1F3C750LNANNNNN | PowerFlex 755 | 750 A class | 400 V | Air-Cooled AC Packaged Drive | Air cooled | Configuration-dependent | Configuration-dependent |
These models are listed within the same PowerFlex 755 catalog family. The catalog listings show several different 585 A, 650 A and 750 A configurations, including different suffixes and packaged arrangements.
| Model | Current | Voltage | Main Difference | Dimensions | Weight (kg) |
|---|---|---|---|---|---|
| 20G1F3C585LNANNNNN | 585 A class | 400 V class | Lower current class | Configuration-dependent | Configuration-dependent |
| 20G1F3C650KNANNNNN | 650 A class | 400 V class | Related 650 A configuration | Configuration-dependent | Configuration-dependent |
| 20G1F3C650LNANNNNN | 650 A class | 400 V | Reference model | Configuration-dependent | Configuration-dependent |
| 20G1F3C650LNDNNNNN | 650 A class | 400 V class | Alternative 650 A configuration | Configuration-dependent | Configuration-dependent |
| 20G1F3C650MNANNNNN | 650 A class | 400 V class | Alternative configuration | Configuration-dependent | Configuration-dependent |
| 20G1F3C750LNANNNNN | 750 A class | 400 V class | Higher current class | Configuration-dependent | Configuration-dependent |
These are related catalog configurations rather than guaranteed drop-in substitutes. The complete catalog suffix must be checked before replacement because different suffixes can indicate different electrical, mechanical or option configurations.
For customers who want to compare this large PowerFlex 755 with other commonly encountered industrial drive models, the following are useful reference points.
| Model | Series | Product Type | Typical Application | Current / Rating | Voltage | Cooling | Dimensions | Weight (kg) |
|---|---|---|---|---|---|---|---|---|
| 20F1AND302JN0NNNNN | PowerFlex 753 | Air-Cooled AC Drive | Industrial motor control | Configuration-dependent | Configuration-dependent | Air cooled | Configuration-dependent | Configuration-dependent |
| 20F1AGC302JN0NNNNN | PowerFlex 753 | Air-Cooled AC Drive | Pumps, fans, conveyors | Configuration-dependent | Configuration-dependent | Air cooled | Configuration-dependent | Configuration-dependent |
| 20G1ANC367AA0NNNNN | PowerFlex 755 | Air-Cooled AC Drive | Large industrial machinery | Configuration-dependent | Configuration-dependent | Air cooled | Configuration-dependent | Configuration-dependent |
| 20G1ANC456AN0NNNNN | PowerFlex 755 | Air-Cooled AC Drive | Large motor applications | Configuration-dependent | Configuration-dependent | Air cooled | Configuration-dependent | Configuration-dependent |
| 20G1ANC477JA0NNNNN | PowerFlex 755 | Air-Cooled AC Drive | High-power industrial equipment | Configuration-dependent | Configuration-dependent | Air cooled | Configuration-dependent | Configuration-dependent |
These catalog numbers appear within the broader Allen-Bradley drive catalog and include PowerFlex 753 and PowerFlex 755 air-cooled configurations.
Because the exact suffixes define the actual electrical and mechanical configuration, these models should be treated as comparison products rather than assumed replacements.
The 20G1F3C650LNANNNNN occupies a very different part of the drive market from compact general-purpose inverters.
A small drive may be suitable for a motor of only a few kilowatts or tens of kilowatts.
A 650 A PowerFlex 755 configuration is intended for much larger industrial equipment.
The physical installation is therefore different as well.
A small inverter may be wall mounted inside a compact enclosure, whereas this type of large-frame drive normally requires substantial cabinet space, appropriate ventilation, heavy power cabling and suitable mechanical support.
Before installing the drive, engineers should check the complete electrical and mechanical system.
Important items include:
| Installation Item | What Should Be Checked |
|---|---|
| Input Voltage | Confirm 400 V AC system compatibility |
| Input Phase | Confirm three-phase supply |
| Motor Current | Compare with actual motor nameplate current |
| Motor Power | Check duty rating |
| Motor Frequency | Confirm 50/60 Hz requirement |
| Motor Insulation | Confirm suitability for VFD operation |
| Grounding | Verify protective-earth arrangement |
| Cable Size | Select according to current and installation conditions |
| Short-Circuit Rating | Verify system fault level and protection |
| Cabinet | Provide adequate physical space |
| Cooling | Provide sufficient airflow |
| Ambient Temperature | Confirm operating temperature range |
| Service Access | Provide maintenance clearance |
| Lifting | Confirm actual drive weight |
| Communication | Confirm required network/interface |
| Feedback | Confirm encoder or feedback requirements |
| Braking | Confirm regenerative requirements |
| Motor Cable Length | Evaluate insulation and reflected-wave considerations |
For a 650 A-class drive, cabinet design becomes an important engineering issue.
The enclosure must accommodate the drive itself as well as:
The cabinet must also provide enough space for service work.
The drive should not simply be placed into the smallest possible enclosure.
Thermal management is especially important because high-current power electronics generate significant heat.
The 20G1F3C650LNANNNNN can be considered for large three-phase AC motors in applications requiring variable-speed operation.
Typical motor-driven equipment includes:
The actual motor-control mode should be selected according to the motor type and application.
The regenerative feature makes this model especially interesting for machinery where the load can return energy to the drive.
For example, consider a large conveyor moving downhill.
During certain operating conditions, the conveyor can drive the motor rather than the motor driving the conveyor.
A conventional drive may need to dissipate the resulting energy through a braking system.
An AFE regenerative architecture is designed to manage this type of operating condition differently.
Other examples include:
The suitability of regenerative operation must always be considered together with the mechanical system, braking requirements and safety system.
| Area | Benefit |
|---|---|
| Motor Size | Supports large industrial motors |
| Current Capacity | High-current 650 A class |
| Energy Handling | AFE regenerative operation |
| Speed Control | Adjustable motor speed |
| Starting | Controlled acceleration |
| Stopping | Controlled deceleration |
| Process Control | Better speed matching |
| Automation | Suitable for integrated industrial control |
| Maintenance | Diagnostic and parameter-based troubleshooting |
| Flexibility | Multiple configuration possibilities |
| Industrial Use | Suitable for demanding machinery |
The 20G1F3C650LNANNNNN should not be replaced solely on the basis of the words “PowerFlex 755” or “650 A.”
The entire catalog number should be compared.
For example, the following are all related but distinct catalog numbers:
These are listed as separate PowerFlex 755 configurations.
The differences can involve power architecture, options, braking, filtering, enclosure arrangement or other configuration characteristics.
The exact catalog number 20G1F3C650LNANNNNN is listed as discontinued, with the discontinuation date recorded as December 20, 2021.
The product record identifies a direct replacement in the newer product generation.
This is important when purchasing today.
If an existing machine is still operating with this drive, there may be good reasons to retain the original model where compatibility and spare-parts strategy require it.
For a new machine, however, the current replacement platform should be evaluated rather than assuming that a discontinued catalog number remains a normal new-production item.
Large industrial drives should be included in a planned maintenance program.
Typical maintenance considerations include:
Inspect the cooling system regularly.
Dust accumulation can restrict airflow and raise operating temperatures.
High-current connections should be inspected according to the applicable maintenance procedure.
Loose connections can produce heat and may eventually damage terminals or conductors.
Keep the enclosure clean and maintain appropriate environmental conditions.
Alarm and fault information should be reviewed rather than simply resetting faults repeatedly.
The drive is only one part of the motor system.
Motor insulation, cables, grounding and mechanical loads should also be inspected.
A drive of this size contains hazardous electrical energy.
Installation and maintenance should only be carried out by qualified personnel following the applicable electrical safety procedures.
Before service work, appropriate isolation and verification procedures should be completed.
Particular attention should be paid to stored DC-bus energy.
The regenerative architecture does not remove the need for proper electrical isolation and safe working practices.
| Parameter | 20G1F3C650LNANNNNN |
|---|---|
| Model | 20G1F3C650LNANNNNN |
| Brand | Allen-Bradley |
| Series | PowerFlex 755 |
| Product Type | AC Drive |
| Configuration | Air-Cooled |
| Input Type | AFE Regenerative |
| Input Voltage | 400 V AC |
| Input Phase | 3 Phase |
| Catalog Size | 650 A |
| Listed Current | Approximately 698 A |
| Frame | 8C |
| Normal-Duty Reference | Approximately 355 kW |
| Heavy-Duty Reference | Approximately 315 kW |
| Cooling | Air Cooled |
| Regeneration | Yes |
| Dynamic Braking | Configuration-dependent / regenerative architecture |
| Motor Type | Three-Phase AC |
| Installation | Large-frame industrial installation |
| Communication | Configuration-dependent |
| Feedback | Configuration-dependent |
| Enclosure | Configuration-dependent |
| Dimensions | Configuration-dependent |
| Width | Configuration-dependent |
| Height | Configuration-dependent |
| Depth | Configuration-dependent |
| Net Weight (kg) | Configuration-dependent |
| Shipping Weight (kg) | Configuration-dependent |
| Product Status | Discontinued |
| Application | Large industrial motor control |
The 400 V, AFE regenerative and Frame 8C characteristics are directly associated with the exact catalog number, while the 650 A/355 kW/315 kW values correspond to the closely matching 650 A configuration record.
| Requirement | Recommended Direction |
|---|---|
| Need the same existing unit | Match 20G1F3C650LNANNNNN |
| Need a related 650 A configuration | Compare 650 A PowerFlex 755 variants |
| Need slightly lower current | Consider 585 A PowerFlex 755 configuration |
| Need higher current | Consider 750 A or 770 A configurations |
| Need regenerative operation | Confirm AFE regenerative configuration |
| Need corrosion protection | Consider an appropriate XT configuration |
| Need a smaller industrial drive | Evaluate PowerFlex 753 or smaller PowerFlex families |
| Need exact replacement | Match the complete catalog number and options |
The Allen-Bradley 20G1F3C650LNANNNNN is a large-frame PowerFlex 755 AC Drive designed for high-power industrial motor-control applications.
Its principal characteristics are its 400 V AC three-phase input, AFE regenerative architecture, 650 A class, approximately 698 A catalog current, air-cooled construction and Frame 8C design.
The regenerative architecture makes the drive particularly useful for machinery where substantial energy can be returned from the motor during deceleration or overhauling operation.
Typical applications include large conveyors, pumps, fans, blowers, compressors, cranes, hoists, mining equipment, cement machinery, process equipment and large material-handling systems.
The PowerFlex 755 architecture also provides a flexible platform for industrial automation, allowing the drive to be incorporated into larger motor-control and plant-control systems.
The 650 A class is important because this is a large industrial drive rather than a small general-purpose inverter.
The physical installation should therefore be planned carefully. Cabinet size, ventilation, cable routing, grounding, service clearance and lifting arrangements all need to be considered.
For dimensions and weight, the most reliable engineering practice is to use the exact mechanical documentation for the specific catalog configuration. The model is identified as Frame 8C, but a single generic dimension or weight should not be assumed for every related packaged configuration.
The model is also a discontinued catalog number, so when replacing an existing unit, the original catalog number should be compared carefully with the proposed replacement rather than choosing another drive based only on current rating.
Overall, 20G1F3C650LNANNNNN represents a high-current, regenerative PowerFlex 755 configuration intended for demanding industrial motor-control systems where large motor capacity, controlled speed, controlled acceleration/deceleration and regenerative energy handling are important.