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- Allen Bradley
- 20BF119A3ANNANC0
- PowerFlex 700 AC Drive
- USA
- 850 × 403.9 × 275.5 mm
- 71.44 kg
- Xiamen, China
- New & In Stock
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Product Overview
The Allen Bradley 20BF119A3ANNANC0 PowerFlex 700 AC Drive is an industrial variable frequency drive used to control AC motors in automation and production equipment. As part of the PowerFlex 700 family, it sits between the electrical supply and motor, allowing the control system to manage motor speed and operating behavior according to application requirements.
An AC drive such as the 20BF119A3ANNANC0 is useful where a motor should not simply run at a fixed line frequency. By controlling the electrical conditions delivered to the motor, the drive can support variable-speed operation for machinery such as conveyors, pumps, fans, compressors, and material-handling equipment.
The drive also serves as an interface between higher-level automation controls and the motor power circuit. Commands from a PLC, operator interface, or other control equipment can be used to establish the desired motor operating condition, while drive feedback and diagnostic information can support equipment monitoring.
For maintenance engineers, the exact catalog number matters because PowerFlex 700 configurations can vary by power rating, enclosure arrangement, control options, and installed hardware. Replacement work should therefore verify the complete 20BF119A3ANNANC0 identifier rather than selecting a unit solely by physical appearance.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Allen Bradley |
| Model | 20BF119A3ANNANC0 |
| Product Family | PowerFlex 700 |
| Product Type | AC Drive |
| Primary Function | Variable-Speed AC Motor Control |
| System Role | Motor Power and Speed Control |
| Application | Industrial Automation / Motor Control |
| Dimensions | 850 × 403.9 × 275.5 mm |
| Weight | 71.44 kg |
Product Features
The 20BF119A3ANNANC0 provides the drive-level functions required between an industrial power system and an AC motor.
Key characteristics include:
- Allen Bradley PowerFlex 700 AC drive
- Model 20BF119A3ANNANC0
- Intended for industrial AC motor control
- Supports variable-speed motor applications
- Provides an interface between automation control and motor power
- Suitable for machine and process automation
- Supports motor operation according to application commands
- Includes drive-level monitoring and diagnostic functions
- Suitable for maintenance and replacement of established PowerFlex 700 installations
- Designed for integration into industrial motor-control architectures
The drive should be considered together with the motor, incoming power, control signals, motor cabling, braking arrangement, and mechanical load when evaluating an application.
Working Principle
The PowerFlex 700 drive controls an AC motor by processing the incoming electrical supply and generating controlled motor output.
A simplified arrangement is:
AC Supply → PowerFlex 700 Drive → Controlled Motor Output → AC Motor → Mechanical Load
The control sequence can be viewed in several stages:
-
Power Input
Electrical power enters the drive from the upstream power system.
-
Power Conversion
The drive processes the incoming AC power through its internal power-conversion stage.
-
Motor Command Processing
A speed, torque, start/stop, or other operating command is received from the drive’s control architecture.
-
Output Generation
The drive generates the appropriate electrical output for the motor based on the configured control strategy.
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Motor Response
The motor responds to the controlled electrical output, producing the required mechanical speed or torque.
-
Feedback and Monitoring
Operating information and diagnostic conditions can be used by the control system or maintenance personnel to evaluate drive and motor performance.
The overall control loop can therefore be represented as:
Control Command → Drive → Motor → Mechanical Process → Feedback / Status → Control System
This arrangement allows motor operation to be coordinated with the wider automation process rather than treating the motor as an independent fixed-speed device.
Role in an Industrial Motor Control System
The 20BF119A3ANNANC0 occupies the motor-control layer between the electrical distribution system and the mechanical process.
A typical architecture is:
PLC / Controller → Drive Control → PowerFlex 700 → AC Motor → Machine
The PLC or supervisory system determines the required operating condition, while the drive handles the electrical control of the motor.
For a conveyor, for example, the automation controller may request a particular operating speed. The drive interprets the command and controls the motor accordingly. The same principle can be applied to pumps, fans, compressors, and other rotating machinery where process demand changes over time.
This separation of functions is useful during troubleshooting. A motor that fails to accelerate may have a problem in the command signal, drive configuration, drive hardware, motor circuit, or mechanical load. Testing each section of the chain makes fault isolation more systematic.
Industrial Applications
| Application | Typical Use |
|---|---|
| Conveyor Systems | Variable-speed material movement |
| Pumping Systems | Adjusting motor speed to process demand |
| Industrial Fans | Controlling airflow and motor operation |
| Compressors | Motor speed management |
| Material Handling | Coordinating motor speed with production flow |
| Manufacturing Machinery | Variable-speed machine operation |
| Process Equipment | Matching motor output to process requirements |
| Production Lines | Coordinated motor control |
The actual operating duty depends on the motor, mechanical load, process requirements, and drive configuration.
Installation and Maintenance
Because the PowerFlex 700 is connected directly to both the electrical supply and motor circuit, installation and servicing should be carried out with appropriate electrical isolation and equipment-specific procedures.
Recommended practices include:
- Confirm the complete catalog number 20BF119A3ANNANC0.
- Verify that the replacement drive matches the existing system configuration.
- Record control wiring and terminal assignments before removal.
- Document existing drive parameters where applicable.
- Isolate the incoming electrical supply before servicing.
- Follow the required discharge and electrical safety procedures.
- Inspect incoming power connections.
- Check motor output terminals and cable condition.
- Inspect grounding connections.
- Examine the cooling path for obstruction or contamination.
- Check control and communication wiring.
- Verify motor and drive configuration before startup.
- Test the motor at controlled operating conditions.
- Monitor drive status and diagnostic information.
- Check acceleration, deceleration, and motor response during commissioning.
If a drive reports an overcurrent, overload, or similar motor-related fault, the investigation should include the motor, mechanical load, motor cable, acceleration profile, and drive parameters rather than automatically replacing the drive.
Related Components
The PowerFlex 700 normally works with several components across the motor-control system.
| Component | Function |
|---|---|
| PLC / Controller | Generates motor-control commands |
| AC Drive | Controls motor electrical output |
| AC Motor | Converts electrical energy into mechanical motion |
| Motor Cable | Transfers controlled power to the motor |
| Circuit Protection | Protects the incoming power circuit |
| Disconnect Device | Provides electrical isolation |
| Operator Interface | Allows operators to monitor or command operation |
| Communication Network | Transfers control and status information |
| Mechanical Load | Receives the motor’s mechanical output |
| Grounding System | Supports electrical safety and system integrity |
A drive fault should be assessed within this complete electrical and mechanical chain.
Recommended Related Models
| Model / Product Family | Product Type | Typical Application |
|---|---|---|
| Allen Bradley 20BF119A3ANNANC0 | PowerFlex 700 AC Drive | Variable-speed AC motor control |
| Allen Bradley PowerFlex 700 | AC Drive Family | Industrial motor control |
| Allen Bradley PowerFlex AC Drives | Variable Frequency Drive | Machine and process automation |
| Allen Bradley PLC Controllers | PLC Hardware | Drive command and automation logic |
| Allen Bradley Operator Interfaces | HMI Hardware | Motor and process monitoring |
Key Advantages
- Allen Bradley PowerFlex 700 AC drive.
- Model 20BF119A3ANNANC0.
- Suitable for industrial AC motor control.
- Supports variable-speed operation.
- Connects automation commands with motor power control.
- Suitable for conveyors, pumps, fans, compressors, and machinery.
- Provides drive-level operating and diagnostic information.
- Useful for existing PowerFlex 700 maintenance and replacement projects.
- Integrates into broader industrial motor-control architectures.
Technical FAQs
What should be verified before replacing a 20BF119A3ANNANC0 drive?
The complete catalog number, motor characteristics, control wiring, drive configuration, incoming power arrangement, communication connections, and existing parameter settings should be checked. Matching the physical dimensions alone does not establish replacement compatibility.
Why might a PowerFlex 700 report an overcurrent condition immediately after a motor starts?
Possible causes include excessive mechanical load, incorrect motor-related configuration, motor or cable problems, unsuitable acceleration settings, or a problem within the drive output circuit. The motor and mechanical system should be checked alongside the drive.
How can a technician determine whether a motor problem originates from the drive or the mechanical load?
Observe the drive status and output behavior while comparing the commanded operating condition with the motor’s actual response. If the drive behaves normally but the motor cannot achieve the expected operating condition, the motor circuit or mechanical load should be investigated rather than assuming drive failure.
Why should existing drive parameters be documented before replacement?
Drive parameters determine how the unit responds to commands, motor characteristics, acceleration and deceleration behavior, and other operating conditions. Recording the existing configuration makes commissioning the replacement more controlled and reduces the risk of unexpected motor behavior.