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- Allen Bradley
- 20BD125A3ANNAND0
- PowerFlex 700 AC Drive
- USA
- 689.6 x 308.9 x 275.4 mm
- 37.19 kg
- Xiamen, China
- New & In Stock
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Product Overview
The Allen Bradley 20BD125A3ANNAND0 PowerFlex 700 AC Drive is a high-performance Variable Frequency Drive (VFD) engineered for precision speed control, superior torque regulation, and energy-efficient operation in demanding industrial environments. As a member of the PowerFlex 700 family, this drive integrates advanced vector control technology, intelligent diagnostics, comprehensive motor protection, and flexible networking capabilities to optimize industrial motor performance.
The 20BD125A3ANNAND0 converts fixed-frequency three-phase AC input power into adjustable voltage and frequency output, enabling precise motor speed control for a wide range of industrial applications. By matching motor output to actual process requirements, the drive improves production efficiency, minimizes mechanical wear, reduces electrical energy consumption, and extends the operating life of motors and driven equipment.
Designed for continuous-duty industrial service, the drive features programmable control functions, built-in fault diagnostics, real-time monitoring, and simplified commissioning. Its rugged construction ensures dependable operation in harsh manufacturing and process environments while supporting seamless integration with PLC-based automation systems.
With dimensions of 689.6 × 308.9 × 275.4 mm and an approximate weight of 37.19 kg, the drive is designed for panel-mounted installation inside industrial control cabinets requiring reliable and efficient motor control.
Typical applications include conveyor systems, pumps, compressors, fans, mixers, extruders, packaging machinery, HVAC equipment, mining machinery, water treatment systems, material handling equipment, and general industrial automation. The model has been discontinued by the manufacturer but remains widely used in existing industrial installations and maintenance projects.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Allen Bradley |
| Product Series | PowerFlex 700 |
| Model | 20BD125A3ANNAND0 |
| Product Type | AC Drive / Variable Frequency Drive |
| Primary Function | Variable Speed Motor Control |
| Motor Control Method | Vector Control |
| Input Supply | Three-Phase AC |
| Output Frequency | Adjustable Variable Frequency |
| Rated Output Current | 125 A |
| Cooling Method | Forced Air Cooling |
| Enclosure Rating | IP20 / NEMA Type 1 |
| Mounting Method | Panel / Cabinet Mount |
| Protection Features | Overload, Overvoltage, Undervoltage, Ground Fault, Overtemperature and Short Circuit Protection |
| Communication | Industrial Communication Support |
| Dimensions | 689.6 × 308.9 × 275.4 mm |
| Weight | Approximately 37.19 kg |
Function and Working Principle
The 20BD125A3ANNAND0 regulates motor speed by converting fixed-frequency AC power into adjustable voltage and frequency through advanced power electronics.
Typical Power Flow
Three-Phase AC Supply
↓
Rectifier
↓
DC Bus
↓
IGBT Inverter
↓
20BD125A3ANNAND0 PowerFlex 700 AC Drive
↓
Three-Phase AC Motor
↓
Industrial Equipment
During operation, the drive continuously monitors motor operating conditions and adjusts output parameters according to process demand.
Key operating functions include:
- Precise variable speed control
- High-performance vector torque control
- Smooth acceleration and deceleration
- Soft motor starting and stopping
- PID process regulation
- Energy-saving motor operation
- Real-time fault diagnostics
- Motor overload protection
- Industrial communication integration
- Continuous operational monitoring
The intelligent control system ensures stable motor performance while reducing mechanical stress and improving production efficiency.
Role in Industrial Control Systems
Within industrial automation systems, the 20BD125A3ANNAND0 serves as the intelligent motor controller between the PLC and the driven equipment.
Typical automation architecture:
Industrial PLC
↓
20BD125A3ANNAND0 PowerFlex 700 AC Drive
↓
Three-Phase AC Motor
↓
Mechanical Equipment
↓
Production Process
The drive accurately executes PLC commands while providing operational status and diagnostic feedback to support predictive maintenance and system reliability.
Industrial Applications
Manufacturing Automation
Typical applications include:
- Automated production lines
- CNC machining centers
- Robotic systems
- Assembly equipment
- Packaging machinery
Conveyor Systems
Suitable for:
- Material handling
- Warehouse automation
- Distribution centers
- Sorting equipment
- Logistics systems
Pumps and Water Treatment
Frequently used in:
- Water supply systems
- Booster pump stations
- Wastewater treatment plants
- Irrigation systems
- Chemical dosing equipment
Fans and HVAC Systems
Ideal for:
- Air handling units
- Ventilation systems
- Cooling towers
- Industrial exhaust systems
- Environmental control equipment
Mining and Heavy Industry
Common applications include:
- Crushers
- Conveyors
- Material processing equipment
- Ventilation systems
- Heavy industrial machinery
Food and Beverage Processing
Suitable for:
- Mixing systems
- Bottling equipment
- Packaging lines
- Conveyor applications
- Automated production equipment
Installation and System Integration
Before installation, engineers should verify:
- Input voltage compatibility
- Motor nameplate data
- Cabinet ventilation
- Protective grounding
- Cable sizing
- Control wiring
- Communication configuration
- Environmental conditions
- Protective devices
- Commissioning procedures
Recommended Installation Procedure
- Disconnect all electrical power.
- Mount the drive securely inside the control cabinet.
- Connect the three-phase input power.
- Connect the motor output terminals.
- Install the protective earth conductor.
- Complete control wiring.
- Configure communication parameters.
- Verify all electrical connections.
- Restore power.
- Enter motor parameters.
- Configure drive settings.
- Test motor rotation.
- Verify protection functions.
- Complete commissioning.
- Save configuration data.
Proper installation maximizes drive performance, motor protection, and long-term operational reliability.
Compatible System Components
| Component | Function |
|---|---|
| Allen Bradley PLC | Machine automation controller |
| 20BD125A3ANNAND0 | Variable frequency drive |
| Three-Phase AC Motor | Mechanical power output |
| HMI Panel | Operator interface |
| Circuit Breaker | Electrical protection |
| Contactor | Power isolation |
| EMC Filter | Electromagnetic compatibility |
| Braking Resistor | Dynamic braking |
| Encoder | Speed feedback |
| Industrial Ethernet Network | Industrial communication |
| Industrial Sensors | Process monitoring |
| Industrial Power Supply | System power |
Recommended Alternative Models
| Model | Product Type | Typical Application |
|---|---|---|
| 20BD125A3ANNAND0 | PowerFlex 700 AC Drive | High-performance industrial motor control |
| 20BD125A3ANNANC0 | PowerFlex 700 AC Drive | Standard industrial automation |
| 20BD125A3ANNACC1 | PowerFlex 700 AC Drive | Advanced motor control |
| 20BD125A3ANNAEC0 | PowerFlex 700 AC Drive | Network-integrated automation |
| 20BC140A3ANNAND0 | PowerFlex 700 AC Drive | Heavy-duty industrial equipment |
Key Advantages
- PowerFlex 700 high-performance drive platform
- Advanced vector motor control technology
- Accurate speed and torque regulation
- Smooth motor acceleration and deceleration
- High operating efficiency
- Intelligent diagnostics and fault monitoring
- Comprehensive motor protection
- Flexible industrial communication support
- Easy commissioning and maintenance
- Rugged industrial construction
- Dimensions 689.6 × 308.9 × 275.4 mm
- Approximate weight 37.19 kg
Technical FAQs
What is the Allen Bradley 20BD125A3ANNAND0?
The 20BD125A3ANNAND0 is a PowerFlex 700 AC Drive designed to provide precise variable-speed control for industrial three-phase AC motors.
What is its primary function?
Its primary function is to regulate motor speed and torque by converting fixed-frequency AC input power into adjustable voltage and frequency output.
What are the physical dimensions?
The drive measures 689.6 × 308.9 × 275.4 mm.
What is the approximate weight?
The drive weighs approximately 37.19 kg.
What is the rated output current?
The drive provides a continuous output current rating of 125 A for suitable applications.
Which industries commonly use this drive?
It is widely used in manufacturing, mining, water treatment, HVAC, food processing, logistics, chemical processing, packaging, and general industrial automation.
Does the drive improve energy efficiency?
Yes. By adjusting motor speed according to process demand, it reduces unnecessary energy consumption while improving production efficiency.
Does the drive include motor protection?
Yes. It incorporates overload, overvoltage, undervoltage, ground fault, overtemperature, and short-circuit protection together with advanced diagnostic functions.
Can the drive communicate with PLC systems?
Yes. The PowerFlex 700 platform supports multiple industrial communication options for seamless integration with Allen Bradley PLCs and industrial automation networks.
Where is this drive typically installed?
It is commonly installed inside industrial control cabinets for pumps, compressors, conveyors, fans, mixers, packaging machinery, and other motor-driven industrial equipment.
Conclusion
The Allen Bradley 20BD125A3ANNAND0 PowerFlex 700 AC Drive is a dependable variable frequency drive engineered for demanding industrial motor control applications. Its advanced vector control technology, intelligent diagnostics, comprehensive protection features, and flexible communication capabilities deliver precise motor control, improved energy efficiency, and long-term operational reliability.
With dimensions of 689.6 × 308.9 × 275.4 mm and an approximate weight of 37.19 kg, the 20BD125A3ANNAND0 is ideally suited for cabinet-mounted industrial installations. When integrated with compatible PLCs, HMIs, industrial communication networks, and three-phase AC motors, it provides stable, efficient, and highly reliable performance across a broad range of industrial automation applications.