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- Allen Bradley
- 20G11NC072JA0NNNNN
- PowerFlex 755 AC Drive
- USA
- 474 × 212 × 222 mm
- 13.6 kg
- Xiamen, China
- New & In Stock
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Product Overview
The Allen Bradley 20G11NC072JA0NNNNN is a PowerFlex 755 AC Drive for industrial motor-control applications that require adjustable speed, controlled starting and stopping, and integration with a larger automation system. It fits naturally into machine and process applications where motor operation needs to follow production commands rather than simply running at a fixed speed.
In a typical control cabinet, the PowerFlex 755 receives operating commands and speed references from the control system, processes those inputs according to its configured parameters, and regulates the connected AC motor. This arrangement gives the machine controller greater control over how the motor accelerates, runs, and stops. It is particularly useful for conveyors, pumps, fans, material-handling equipment, and production machinery with changing operating requirements.
For an Allen Bradley automation system, the drive can work as part of a coordinated control architecture in which the PLC manages machine logic while the drive handles the electrical control of the motor. During commissioning, engineers normally pay close attention to motor data, command and reference sources, ramp settings, stopping behavior, protection parameters, and communication configuration.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Allen Bradley |
| Part Number | 20G11NC072JA0NNNNN |
| Product Family | PowerFlex 755 |
| Product Type | AC Drive |
| Drive Series | PowerFlex 755 |
| Application | Industrial variable-speed motor control |
| Dimensions | 474 × 212 × 222 mm |
| Weight | 13.6 kg |
Product Features
- PowerFlex 755 platform for advanced industrial AC motor control.
- Suitable for variable-speed applications requiring controlled motor operation.
- Supports integration with Allen Bradley automation architectures.
- Suitable for machine-level and process-level motor-control systems.
- Configurable operating parameters allow the drive to be matched to different motor and load conditions.
- Drive status and diagnostic functions assist during commissioning and troubleshooting.
- Suitable for applications where motor operation must follow PLC-generated commands.
- Can be incorporated into larger automated production and process-control systems.
Working Principle
The 20G11NC072JA0NNNNN controls the connected AC motor by regulating the electrical output supplied by the drive. The controller does not need to directly manage the electrical characteristics required by the motor; instead, the PLC or other supervisory device establishes the desired operating condition while the PowerFlex 755 performs the corresponding motor-control function.
A typical control sequence can be represented as:
PLC / Controller → Run Command & Speed Reference → PowerFlex 755 → AC Motor → Mechanical Load
When a machine issues a run command, the drive evaluates the configured command source and operating parameters. It then controls motor operation according to the selected control strategy. Acceleration and deceleration parameters determine how quickly the motor changes speed, which can be important for avoiding mechanical shock or unstable material movement.
For process equipment, the speed reference may change continuously as production conditions change. A pump, for example, may need to operate at different speeds according to process demand, while a conveyor may require controlled speed changes as upstream and downstream equipment change state.
Role in an Industrial Drive System
| System Element | Function |
|---|---|
| Allen Bradley PLC | Executes machine logic and generates drive commands |
| PowerFlex 755 | Processes commands and controls the connected AC motor |
| AC Motor | Converts controlled electrical power into mechanical movement |
| HMI | Allows operators to monitor drive status and interact with permitted control functions |
| Industrial Communication Network | Transfers commands, status data, and diagnostic information where applicable |
| Motor / Load Equipment | Performs the physical production or process function controlled by the drive |
Industrial Applications
| Application | Typical Use |
|---|---|
| Conveyor Systems | Adjustable conveyor speed and controlled acceleration during material transfer |
| Pumping Equipment | Matching motor speed to changing process flow requirements |
| Fans and Blowers | Regulating airflow according to production or ventilation demand |
| Material Handling | Controlling motors used in transfer and handling equipment |
| Packaging Machinery | Synchronizing motor speed with automated production cycles |
| Manufacturing Equipment | Providing adjustable motor operation within PLC-controlled machinery |
| Process Machinery | Changing motor speed according to process conditions |
| General Industrial Drives | Replacing fixed-speed motor operation with programmable variable-speed control |
Installation and Maintenance
- Verify that the drive and motor ratings are suitable for the intended application before installation.
- Install the drive in an appropriate control cabinet with suitable electrical protection and environmental conditions.
- Check incoming power, motor connections, grounding, and control wiring before energizing the system.
- Enter the motor nameplate information required by the drive configuration.
- Confirm the selected command source and speed-reference source before performing the first operational test.
- Configure acceleration, deceleration, stopping, and protection parameters according to the machine requirements.
- Perform an initial motor test under controlled conditions before returning the equipment to normal production.
- Review drive status and diagnostic information during commissioning.
- During scheduled maintenance, inspect electrical connections, cooling paths, cabinet ventilation, and signs of contamination or overheating.
- Keep a backup of the drive configuration so that important operating parameters can be restored after replacement or reconfiguration.
Related Components
| Component | Function / Relationship |
|---|---|
| Allen Bradley ControlLogix PLC | Provides machine-level control and can coordinate drive operation |
| Allen Bradley CompactLogix PLC | Suitable for PLC-based machine applications using PowerFlex drives |
| PowerFlex 755 Accessories | Support application-specific drive functions and system integration |
| Human-Machine Interface | Provides operator access to selected drive commands and information |
| AC Motor | Receives the controlled output from the PowerFlex 755 |
| Industrial Network Components | Support communication between the drive, PLC, HMI, and other automation equipment |
Recommended Related Models
| Model | Product Type | Typical Application |
|---|---|---|
| 20F1AND144JN0NNNNN | PowerFlex 753 AC Drive | General industrial variable-speed motor control |
| 20F1AND302AN0NNNNN | PowerFlex 753 AC Drive | Higher-power machine and process applications |
| 20F1AND361AA0NNNNN | PowerFlex 753 AC Drive | Industrial motor-control systems |
| 20F1ANE144JN0NNNNN | PowerFlex 753 AC Drive | Manufacturing and machine applications |
| 20G11BC910JN0NNNNN | PowerFlex 755 AC Drive | High-power industrial motor-control applications |
| 20G11 Series | PowerFlex 755 AC Drive | Advanced drive applications requiring coordinated automation control |
Key Advantages
- Part of the PowerFlex 755 family for industrial AC motor control.
- Suitable for applications requiring adjustable motor speed.
- Works naturally with PLC-based automation architectures.
- Supports configurable acceleration and deceleration behavior.
- Suitable for a broad range of machine and process applications.
- Diagnostic information can assist engineers during commissioning and troubleshooting.
- Offers a practical solution for integrating variable-speed motor control into automated equipment.
Technical FAQs
What applications are well suited to the Allen Bradley 20G11NC072JA0NNNNN PowerFlex 755?
This drive is suitable for industrial machinery and process equipment where motor speed needs to be controlled according to operating conditions. Typical examples include conveyors, pumps, fans, blowers, material-handling systems, packaging equipment, and other variable-speed applications.
Can the 20G11NC072JA0NNNNN be used in a PLC-controlled motor system?
Yes. The PowerFlex 755 can form part of a PLC-based motor-control architecture. The PLC can manage machine sequencing and operating commands while the drive handles the motor-control task and communicates relevant operating information back to the automation system.
What should be checked if the motor does not respond correctly to a speed command?
The first checks should include the configured command source, speed-reference source, active control mode, motor parameters, and communication or control wiring. Engineers should also review the drive’s status and diagnostic information to determine whether the issue comes from the command system, configuration, drive, or motor circuit.
Why are acceleration and deceleration settings important on a PowerFlex 755 installation?
Ramp settings determine how quickly the motor changes speed. If acceleration is too aggressive, the machine may experience unnecessary mechanical stress or excessive current demand. If deceleration is too short for the load, the drive may encounter stopping-related faults. The appropriate settings therefore depend on the motor, load characteristics, and machine operating sequence.