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20G1F4E395LNDNNNNN – PowerFlex 755 High-Power Air-Cooled AC Packaged Drive
Product Overview
The 20G1F4E395LNDNNNNN is a high-power air-cooled packaged AC drive belonging to the PowerFlex 755 series.
It is intended for industrial motor-control systems that require substantially more power and current capacity than conventional compact variable-frequency drives.
The unit is designed for large AC motor applications where adjustable speed, controlled acceleration, controlled deceleration, high-power motor control, and integration into an industrial automation system are important.
The E395 configuration belongs to a high-power section of the PowerFlex 755 family. The 395 designation corresponds to an approximately 395 A current class, subject to the applicable duty and operating conditions.
The catalog number is specifically identified as an Air Cooled 755 AC Packaged Drive. Closely related catalog numbers in the same E-frame family include 20G1F4E545LNDNNNNN, 20G1F4E760LNDNNNNN, 20G1F4E825LNDNNNNN, and 20G1F4E980LNDNNNNN.
The packaged construction makes this model suitable for larger electrical installations where the drive is installed in a dedicated electrical room, motor-control area, or industrial drive room.
Brand and Series
| Item | Specification |
|---|---|
| Brand | Allen-Bradley |
| Series | PowerFlex 755 |
| Model | 20G1F4E395LNDNNNNN |
| Product Type | High-Power AC Drive |
| Package Type | Air-Cooled 755 AC Packaged Drive |
| Drive Category | Industrial Variable-Frequency AC Drive |
| Current Class | Approximately 395 A |
| Cooling | Forced-Air / Air Cooled |
| Installation | Floor-Mounted / Packaged Cabinet |
| Application | High-Power Industrial Motor Control |
| Motor Control | Adjustable-Speed AC Motor Control |
| Construction | Industrial Packaged Drive |
| Typical Environment | Electrical Room / Drive Room |
| Main Application | Large AC Motor Systems |
The PowerFlex 755 family contains numerous current and configuration variations. The E395 model sits alongside higher-current E545, E760, E825, and E980 configurations, giving engineers several current ranges for large industrial motor applications.
Detailed Product Parameters
| Parameter | Specification |
|---|---|
| Model Number | 20G1F4E395LNDNNNNN |
| Brand | Allen-Bradley |
| Series | PowerFlex 755 |
| Product Description | Air-Cooled 755 AC Packaged Drive |
| Drive Type | High-Power Variable-Frequency AC Drive |
| Current Rating Class | Approximately 395 A |
| Input Phase | 3 Phase |
| Input Frequency | 50/60 Hz class |
| Cooling Method | Forced-Air / Air Cooled |
| Installation | Floor Mounted |
| Package | Industrial Packaged Cabinet |
| Motor Control | Variable-Speed AC Motor Control |
| Application Class | Heavy-Duty Industrial |
| Feedback | Configuration Dependent |
| Communication | Configuration Dependent |
| Braking | Configuration Dependent |
| Regenerative Operation | Configuration Dependent |
| Enclosure | Packaged Industrial Cabinet |
| Approx. Dimensions | Approx. 2477 × 800 × 800 mm (H × W × D) |
| Approx. Weight | Approx. 750 kg |
| Cooling Requirement | Adequate forced-air ventilation |
| Installation Environment | Industrial Electrical Room / Drive Room |
| Typical Motor Application | Large Industrial AC Motors |
| Typical Load | Continuous-Duty / High-Inertia Machinery |
| Mounting Arrangement | Floor / Cabinet Mount |
The catalog number is identified as an Air Cooled 755 AC Packaged Drive in available product listings.
The approximately 395 A figure should be regarded as the model’s current class rather than a universal motor-sizing value. Actual usable drive capacity depends on duty, motor voltage, overload requirement, ambient conditions, and the complete configuration.
The dimensions and weight shown above are approximate planning figures for this type of large packaged drive. The actual cabinet can vary depending on factory-installed options, enclosure construction, power components, control hardware, disconnect equipment, braking equipment, and other configuration details.
For final engineering work, the exact mechanical drawing of the supplied configuration should be used for cabinet dimensions, cable entry, lifting points, floor loading, transportation, and maintenance clearances.
Product Introduction
The 20G1F4E395LNDNNNNN is designed for large industrial motor applications where a conventional small-frame VFD does not provide enough power capacity or physical system integration.
A large motor often needs controlled acceleration, adjustable operating speed, and predictable stopping behavior.
A variable-frequency drive allows the motor to operate at different speeds rather than being permanently tied to the fixed frequency of the incoming power supply.
This is useful in many industrial processes.
A conveyor may need to change speed according to production throughput.
A pump may need to change speed according to pressure or flow requirements.
A fan may need to adjust airflow according to process demand.
A compressor may need controlled motor operation over a defined operating range.
A process machine may require different motor speeds during startup, production, and shutdown.
The 20G1F4E395LNDNNNNN is designed for this type of industrial motor-control environment.
Its air-cooled packaged construction is particularly suitable for centralized installations where high-power electrical equipment is grouped in a dedicated area.
High-Power Motor Control
The approximately 395 A current class makes this model suitable for substantial industrial motors.
This is significantly beyond the current range normally associated with small machine-level VFDs.
The drive can therefore be considered for larger production equipment, material-handling machinery, process systems, pumps, fans, and other electrically driven equipment.
Motor selection should always begin with the actual motor nameplate data.
Important parameters include:
- Motor voltage.
- Full-load current.
- Motor frequency.
- Motor power.
- Motor speed.
- Motor power factor.
- Motor efficiency.
- Required overload.
- Acceleration time.
- Deceleration time.
- Load inertia.
- Ambient temperature.
- Installation altitude.
The current rating of the drive should be matched to the actual application rather than selected from motor horsepower alone.
Air-Cooled Design
The 20G1F4E395LNDNNNNN is an air-cooled packaged drive.
High-power semiconductor devices generate heat during normal operation.
The forced-air cooling system removes heat from the power electronics and transfers it into the surrounding environment.
This approach is practical for industrial electrical rooms where appropriate ventilation is available.
The drive installation should have sufficient clearance around the cooling system.
Air passages should not be blocked by other cabinets, cable trays, walls, or stored materials.
The electrical room should also be maintained within an appropriate ambient temperature range.
Dust, oil mist, moisture, corrosive gases, and other contaminants should be considered during installation planning.
Packaged Cabinet Construction
The packaged configuration makes the drive suitable for larger industrial installations.
Unlike a compact wall-mounted VFD, a high-power packaged drive requires more floor area and a more carefully designed electrical installation.
The cabinet provides a dedicated structure for the drive power section, cooling equipment, electrical connections, control components, and associated hardware.
This makes the model appropriate for:
- Industrial electrical rooms.
- Motor-control rooms.
- Centralized drive rooms.
- Mining plants.
- Cement plants.
- Steel plants.
- Water-treatment facilities.
- Large manufacturing plants.
- Material-handling facilities.
- Process industries.
The final installation should allow enough space for ventilation and maintenance.
Main Product Applications
1. Large Conveyor Systems
Large conveyor systems are a natural application for this class of drive.
Mining conveyors, bulk-material conveyors, aggregate conveyors, cement conveyors, warehouse transfer systems, and large production conveyors can use high-power AC motors.
A variable-speed drive allows conveyor speed to be adjusted according to the material flow.
This is useful when the production line operates at different throughput levels.
Controlled acceleration is also important for large conveyors because the belt, pulleys, gearbox, and material load can create considerable inertia.
A gradual acceleration profile can reduce mechanical shock compared with an abrupt full-speed start.
2. Mining Equipment
Mining operations frequently use large motors for conveyors, crushers, feeders, pumps, fans, hoists, and other equipment.
These machines may operate continuously under heavy loading.
The 20G1F4E395LNDNNNNN can be used as part of a large industrial motor-control system where adjustable speed is required.
Mining installations should receive particular attention to dust, ventilation, temperature, cable routing, enclosure protection, and maintenance access.
3. Cement and Aggregate Plants
Cement and aggregate plants contain many large motors.
Typical applications include:
- Large conveyors.
- Crushers.
- Fans.
- Pumps.
- Feeders.
- Material-handling systems.
- Process machinery.
Variable-speed control allows different parts of the production line to operate according to actual process requirements.
For fans and pumps, speed adjustment can be used for process control.
For conveyors and material-handling systems, controlled acceleration can reduce mechanical stress.
4. Steel and Metal Processing
Steel and metal-processing facilities use large motors for rollers, conveyors, fans, pumps, cooling systems, material handling, and other process equipment.
The drive can provide adjustable motor speed and controlled operation.
When incorporated into a larger automation system, the drive can receive speed references and operating commands from the plant control system.
The actual configuration should be selected according to motor characteristics and process requirements.
5. Large Pump Systems
Large pumps can require substantial motor power.
Applications include:
- Industrial water circulation.
- Cooling-water systems.
- Process pumps.
- Water treatment.
- Utility pumping.
- Large fluid-transfer systems.
Variable-speed control can allow the pump to operate according to actual flow and pressure requirements.
This is particularly useful when the process demand changes during the production cycle.
The pump, motor, piping system, and drive should be considered as one complete system.
6. Industrial Fans and Blowers
Large fans and blowers can require high motor current.
They are common in cement plants, steel plants, mining operations, industrial ventilation systems, and process facilities.
The drive can adjust fan speed according to airflow requirements.
Large fan assemblies can have substantial rotational inertia, so acceleration time should be evaluated during drive selection.
7. Compressors
Large compressors can also use variable-speed AC motor control where the compressor is designed for such operation.
The drive can provide controlled motor acceleration and adjustable operating speed.
Compressor applications require careful attention to minimum speed, maximum speed, motor thermal behavior, compressor operating limits, and acceleration requirements.
8. Material-Handling Systems
Material-handling equipment can include conveyors, feeders, transfer systems, hoists, cranes, and other large electrically driven machines.
These applications can require high starting torque and controlled acceleration.
The drive should be selected according to the actual mechanical load.
For lifting equipment, braking and regenerative behavior should be considered separately because lowering a load can return energy to the drive system.
Product Advantages
High Current Capacity
The approximately 395 A class provides substantial motor current capacity for industrial applications.
It is suitable for larger motors and machines that require considerably more power than small general-purpose VFDs.
This makes the model useful for centralized industrial motor-control systems.
Adjustable Speed
The drive allows motor speed to be adjusted according to the process.
This can be useful for conveyors, pumps, fans, compressors, and process machinery.
The motor does not need to remain at one fixed operating speed throughout the entire production cycle.
Controlled Acceleration
Large motors can produce high electrical and mechanical stress during startup.
The drive allows the acceleration process to be controlled.
This is particularly useful for high-inertia loads.
A controlled acceleration profile can help the machine reach operating speed smoothly.
Controlled Deceleration
Controlled deceleration can also be useful for large industrial equipment.
The stopping profile can be adjusted according to the machine requirements, although the exact braking method depends on the drive configuration and load characteristics.
Air-Cooled Architecture
The forced-air cooling arrangement is practical for large industrial installations.
It avoids the need for a liquid cooling circuit in a standard air-cooled installation.
Maintenance can focus on cooling fans, airflow, cabinet cleanliness, electrical connections, and thermal conditions.
Packaged Industrial Installation
The packaged cabinet format provides a practical structure for integrating the drive into a centralized electrical installation.
This is useful where the drive is part of a larger motor-control system rather than a small standalone machine panel.
Industrial Automation Integration
The PowerFlex 755 family is designed for integration with industrial automation systems.
Depending on the selected configuration, the drive can exchange operating commands, speed references, status information, alarms, and other data with higher-level control equipment.
This makes the drive suitable for automated production environments.
Five Same-Series / Related Models
The following models are closely related to the E395 configuration within the PowerFlex 755 family.
| Model | Series | Approx. Current Class | Cooling | Product Type | Approx. Dimensions | Approx. Weight |
|---|---|---|---|---|---|---|
| 20G1F4E242LNDNNNNN | PowerFlex 755 | 242 A class | Air cooled | AC Packaged Drive | Configuration dependent | Configuration dependent |
| 20G1F4E395LNANNNNN | PowerFlex 755 | 395 A class | Air cooled | AC Drive | Configuration dependent | Configuration dependent |
| 20G1F4E545LNDNNNNN | PowerFlex 755 | 545 A class | Air cooled | AC Packaged Drive | Configuration dependent | Configuration dependent |
| 20G1F4E760LNDNNNNN | PowerFlex 755 | 760 A class | Air cooled | AC Packaged Drive | Configuration dependent | Configuration dependent |
| 20G1F4E980LNDNNNNN | PowerFlex 755 | 980 A class | Air cooled | AC Packaged Drive | Configuration dependent | Configuration dependent |
These related E-frame catalog numbers are listed within the PowerFlex 755 family.
The 242 A version provides a lower-current reference point, while the 545 A, 760 A, and 980 A versions provide progressively greater current capacity.
The 20G1F4E395LNDNNNNN therefore occupies a useful middle position within this group.
Five Same-Brand High-Power Models
| Model | Product Family | Approx. Current Class | Product Type | Cooling | Typical Application | Approx. Dimensions | Approx. Weight |
|---|---|---|---|---|---|---|---|
| 20G1F4D505LNDNNNNN | PowerFlex 755 | 505 A class | AC Packaged Drive | Air cooled | Large conveyors, pumps, fans | Configuration dependent | Configuration dependent |
| 20G1F4D740LNDNNNNN | PowerFlex 755 | 740 A class | AC Packaged Drive | Air cooled | Heavy industrial machinery | Configuration dependent | Configuration dependent |
| 20G1F4D960LNDNNNNN | PowerFlex 755 | 960 A class | AC Packaged Drive | Air cooled | Large process equipment | Configuration dependent | Configuration dependent |
| 20G1F4D1K0LNDNNNNN | PowerFlex 755 | 1,000 A class | AC Packaged Drive | Air cooled | Mining and heavy material handling | Configuration dependent | Configuration dependent |
| 20G1F4D1K3LNDNNNNN | PowerFlex 755 | 1,300 A class | AC Packaged Drive | Air cooled | Very high-power industrial systems | Configuration dependent | Configuration dependent |
These models provide useful high-power comparison points within the same brand and product family.
The D-series models move into progressively higher current classes and can be considered for larger motor applications.
For a replacement project, however, the complete catalog number should be checked. A higher current rating does not automatically mean that the model is a direct mechanical or electrical replacement.
High-Power Model Comparison
| Feature | 20G1F4E395LNDNNNNN | 20G1F4E545LNDNNNNN | 20G1F4E760LNDNNNNN | 20G1F4E825LNDNNNNN | 20G1F4E980LNDNNNNN |
|---|---|---|---|---|---|
| Series | PowerFlex 755 | PowerFlex 755 | PowerFlex 755 | PowerFlex 755 | PowerFlex 755 |
| Current Class | 395 A | 545 A | 760 A | 825 A | 980 A |
| Product Type | Packaged AC Drive | Packaged AC Drive | Packaged AC Drive | Packaged AC Drive | Packaged AC Drive |
| Cooling | Air cooled | Air cooled | Air cooled | Air cooled | Air cooled |
| Installation | Floor mounted | Floor mounted | Floor mounted | Floor mounted | Floor mounted |
| Conveyor Use | Yes | Yes | Yes | Yes | Yes |
| Pump Use | Yes | Yes | Yes | Yes | Yes |
| Fan Use | Yes | Yes | Yes | Yes | Yes |
| Mining Use | Yes | Yes | Yes | Yes | Yes |
| Process Machinery | Yes | Yes | Yes | Yes | Yes |
| Dimensions | Approx. 2477 × 800 × 800 mm | Configuration dependent | Configuration dependent | Configuration dependent | Configuration dependent |
| Weight | Approx. 750 kg | Configuration dependent | Configuration dependent | Configuration dependent | Configuration dependent |
Practical Motor Selection
The most important parameter when matching the drive to a motor is normally the motor’s actual full-load current.
Motor horsepower by itself is not sufficient.
Two motors with the same nominal horsepower can have different full-load current values because of differences in voltage, efficiency, power factor, construction, and operating characteristics.
For the 20G1F4E395LNDNNNNN, the motor nameplate should therefore be checked before final selection.
The required overload capability should also be reviewed.
A conveyor with a heavy startup load may require a different duty consideration from a fan with a relatively predictable load profile.
A pump may have a different operating profile again.
The drive should be sized around the actual machine requirements.
Installation and Mechanical Considerations
The approximate 2477 × 800 × 800 mm dimensions provide a useful preliminary reference for installation planning.
However, the final enclosure dimensions can vary with the exact packaged configuration.
The equipment should have sufficient clearance on all sides required by the installation design.
Particular attention should be given to:
- Cabinet door clearance.
- Cooling-air circulation.
- Power-cable entry.
- Motor-cable routing.
- Control wiring.
- Communication wiring.
- Grounding.
- Maintenance access.
- Lifting access.
- Transportation route.
- Floor loading.
The approximate 750 kg planning weight should also be considered when designing the transportation and installation procedure.
The final equipment weight should be confirmed before shipment and lifting operations.
Cooling and Maintenance
The cooling system is an important part of the drive installation.
Cooling fans should be inspected periodically.
Airflow should remain unobstructed.
Dust should not be allowed to accumulate excessively inside or around the equipment.
The electrical room should also maintain a suitable temperature.
When a high-power drive operates continuously at elevated load, thermal management becomes especially important.
Routine inspection should include cooling fans, electrical connections, cabinet cleanliness, abnormal noise, vibration, and signs of overheating.
Typical Industrial Applications
| Application | Reason for Using a High-Power Drive |
|---|---|
| Large Conveyors | Variable speed and controlled acceleration |
| Mining Equipment | High motor current and continuous-duty operation |
| Cement Plants | Control of conveyors, fans, pumps, and process machinery |
| Steel Plants | Large motor control and production-line coordination |
| Large Pumps | Adjustable speed for flow and pressure control |
| Industrial Fans | Variable airflow and controlled acceleration |
| Compressors | Controlled motor speed where applicable |
| Material Handling | High torque and controlled motion |
| Process Machinery | Adjustable speed and automation integration |
| Utility Equipment | Large motor control in centralized installations |
Final Technical Specification
| Parameter | Final Specification |
|---|---|
| Model | 20G1F4E395LNDNNNNN |
| Brand | Allen-Bradley |
| Series | PowerFlex 755 |
| Product Type | High-Power Air-Cooled AC Packaged Drive |
| Current Class | Approximately 395 A |
| Input | Three-Phase AC |
| Cooling | Forced-Air / Air Cooled |
| Installation | Floor Mounted |
| Package | Industrial Packaged Cabinet |
| Motor Control | Variable-Speed AC Motor Control |
| Typical Duty | Heavy-Duty Industrial |
| Typical Applications | Conveyors, mining, pumps, fans, compressors, process machinery |
| Approx. Dimensions | 2477 × 800 × 800 mm (H × W × D) |
| Approx. Weight | 750 kg |
| Feedback | Configuration Dependent |
| Communication | Configuration Dependent |
| Braking | Configuration Dependent |
| Regenerative Operation | Configuration Dependent |
| Installation Environment | Industrial Electrical Room / Drive Room |
Conclusion
The 20G1F4E395LNDNNNNN is a high-power air-cooled packaged AC drive in the PowerFlex 755 series.
Its approximately 395 A current class makes it suitable for large industrial motor applications where adjustable speed, controlled acceleration, and reliable high-power operation are required.
The model is particularly suitable for large conveyors, mining machinery, cement and aggregate equipment, industrial pumps, large fans, compressors, material-handling equipment, and other process machinery.
The air-cooled construction provides a practical thermal-management arrangement for properly designed industrial electrical rooms.
The packaged cabinet format also makes the unit suitable for centralized drive installations where the drive is integrated into a larger electrical and automation system.
Closely related E-frame models include the 20G1F4E242LNDNNNNN, 20G1F4E545LNDNNNNN, 20G1F4E760LNDNNNNN, 20G1F4E825LNDNNNNN, and 20G1F4E980LNDNNNNN, providing different current-capacity ranges within the same PowerFlex 755 family.
For preliminary planning, an approximate cabinet size of 2477 × 800 × 800 mm and approximate weight of 750 kg can be used as reference figures.
For final purchasing, transportation, foundation design, lifting, installation, and maintenance planning, the exact mechanical configuration supplied with the drive should be used.