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- Allen Bradley
- 150-F85NBD
- PowerFlex 755 AC Drive
- USA
- 321 × 150 × 203 mm
- 5.7 kg
- Xiamen, China
- New & In Stock
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Product Overview
The Allen Bradley 150-F85NBD PowerFlex 755 AC Drive is an industrial AC drive used to control the operation of electric motors in automated machinery and power-driven equipment.
In a typical installation, the drive sits between the incoming electrical supply and the motor. The automation controller sends a speed, start/stop, or operating command, while the drive regulates the electrical output delivered to the motor. This allows motor operation to be adjusted according to the actual requirements of the machine rather than running continuously at a fixed operating condition.
Applications can include conveyors, pumps, fans, machine tools, material-handling equipment, and other systems where motor speed or torque needs to be controlled. In a production line, for example, the drive can adjust conveyor speed to match the process instead of relying on mechanical speed changes.
The 150-F85NBD should be evaluated as part of a complete motor-control system. Motor characteristics, incoming power, control signals, braking requirements, communication interfaces, and the driven load all affect the final installation.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | Allen Bradley |
| Model | 150-F85NBD |
| Product Type | AC Drive |
| Drive Family | PowerFlex 755 |
| Main Function | Variable-Speed Motor Control |
| System Role | AC Motor Drive |
| Control Type | Electronic Variable-Speed Control |
| Application | Industrial Motor Control |
| Typical Use | Motor Speed and Torque Regulation |
| Dimensions | 321 × 150 × 203 mm |
| Weight | 5.7 kg |
Product Features
The 150-F85NBD is intended for motor-control applications where the operating speed of an AC motor needs to be adjusted electronically.
Key characteristics include:
- PowerFlex 755 AC drive architecture
- Variable-speed AC motor control
- Electronic control of motor operation
- Suitable for industrial automation systems
- Applicable to continuous-duty motor applications
- Supports controlled motor acceleration and deceleration
- Suitable for machinery with changing speed requirements
- Can be integrated into larger automation control systems
- Dimensions of 321 × 150 × 203 mm
- Stated weight of 5.7 kg
The drive should be matched to the motor, power system, control architecture, and mechanical load rather than selected solely by enclosure dimensions.
Working Principle
A practical AC drive arrangement can be represented as:
Control System → AC Drive → Motor → Mechanical Load
The incoming electrical supply feeds the drive, while the automation system determines how the motor should operate. The drive processes the control command and adjusts the electrical output supplied to the motor.
During acceleration, the drive controls the motor’s electrical output so that the motor can increase speed according to the configured operating requirements. During deceleration, it manages the motor response as the commanded speed is reduced.
For example, on a conveyor system, the motor may need to operate at different speeds during loading, processing, and discharge. Instead of switching the motor directly between fixed operating states, the AC drive allows the machine controller to change the motor’s operating speed according to the production process.
The actual behavior also depends on motor parameters, load inertia, control settings, and the mechanical transmission connected to the motor.
Industrial Applications
The 150-F85NBD is suitable for industrial equipment requiring controlled AC motor operation.
| Application | Typical Use |
|---|---|
| Conveyor Systems | Variable material-transport speed |
| Pumps | Flow-related motor-speed control |
| Fans and Blowers | Adjustable airflow operation |
| Material Handling | Controlled motor acceleration and speed |
| Machine Tools | Motor operating-speed control |
| Packaging Machinery | Coordinated machine movement |
| Production Lines | Process-dependent motor control |
| Industrial Machinery | General variable-speed operation |
The appropriate application depends on the motor’s electrical requirements and the characteristics of the driven load.
Compatible System Components
The 150-F85NBD is normally integrated with several components within the motor-control system.
| Component | Function |
|---|---|
| 150-F85NBD | Controls electrical power delivered to the AC motor |
| AC Motor | Converts electrical energy into mechanical movement |
| PLC / Controller | Generates operating commands |
| Human-Machine Interface | Allows operators to monitor or adjust operation |
| Input Power System | Supplies electrical power to the drive |
| Motor Cable | Transfers controlled power from drive to motor |
| Feedback Device | Provides motor or machine operating information where required |
| Braking Components | Assist with controlled stopping where applicable |
| Network / Communication Interface | Connects the drive with the automation system |
| Mechanical Load | Receives the motor’s mechanical output |
Correct drive operation depends on appropriate coordination between the electrical supply, motor, controller, and mechanical load.
Installation and Maintenance
The 150-F85NBD should be installed in an industrial enclosure suitable for the drive and its surrounding electrical environment. Ventilation, cable routing, grounding, and clearance should be considered during installation.
Before replacing the drive, record the existing motor parameters and control connections. This is particularly useful when the drive is part of a machine that has already been commissioned.
Recommended checks include:
- Confirm the complete 150-F85NBD part number.
- Verify the motor application.
- Check incoming power connections.
- Inspect motor output wiring.
- Verify grounding connections.
- Inspect control and communication wiring.
- Check connectors and terminals for damage.
- Review motor and drive configuration.
- Inspect cabinet ventilation.
- Check the mechanical load for abnormal resistance.
- Inspect braking equipment where applicable.
- Verify controller-to-drive communication.
- Perform controlled commissioning after replacement.
If the motor does not accelerate correctly, trips during operation, or runs at an unexpected speed, the drive should not automatically be treated as the source of the problem. Motor wiring, parameter settings, incoming power, load conditions, and control signals should also be checked.
Recommended Related Models
For the 150-F85NBD, related models should be selected according to motor requirements, machine duty, control architecture, and the required drive capacity.
| Model / Component | Type | Primary Function | Application |
|---|---|---|---|
| Allen Bradley 150-F85NBD | PowerFlex 755 AC Drive | Variable-speed motor control | Industrial automation |
| Allen Bradley PowerFlex 755 Series | AC Drive Family | Motor speed and torque control | Machine and process systems |
| Allen Bradley AC Motors | AC Motor | Mechanical power generation | Industrial machinery |
| Allen Bradley PLC Controllers | Controller | Drive command and machine logic | Automated equipment |
| Allen Bradley HMI Systems | Operator Interface | Drive and machine monitoring | Industrial automation |
| Allen Bradley Drive Accessories | Drive Accessories | Drive installation and control functions | PowerFlex systems |
When selecting a replacement or alternative, verify the motor’s voltage, current, power requirements, load characteristics, control method, installation environment, and communication requirements.
Key Advantages
- PowerFlex 755 AC drive platform
- Variable-speed AC motor control
- Suitable for industrial automation
- Supports controlled acceleration and deceleration
- Applicable to pumps, fans, conveyors, and machinery
- Can integrate with automation controllers
- Suitable for applications requiring adjustable motor operation
- Dimensions of 321 × 150 × 203 mm
- Stated weight of 5.7 kg
Technical FAQs
What is the primary function of the Allen Bradley 150-F85NBD?
The 150-F85NBD is an AC drive used to control the operation of an electric motor. It regulates the electrical output supplied to the motor according to the machine’s operating commands and configured control requirements.
Why would a machine use an AC drive instead of running the motor at a fixed speed?
Variable-speed control allows the motor to follow the actual process requirement. A conveyor, pump, fan, or machine axis may not need to operate at the same speed under every condition, so the drive can adjust motor operation accordingly.
What should be checked when a motor connected to the drive trips unexpectedly?
Incoming power, motor wiring, drive configuration, motor condition, mechanical load, acceleration or deceleration requirements, and control signals should be checked. The cause can be external to the drive itself.
What information is most important when replacing a 150-F85NBD?
The complete drive part number should be verified together with the motor’s electrical characteristics, machine load, control method, wiring, communication arrangement, and existing drive configuration. Physical size alone is not sufficient for drive selection.