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- Allen Bradley
- 20BC140A3ANNADC0
- 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 20BC140A3ANNADC0 PowerFlex 700 AC Drive is a high-performance variable frequency drive (VFD) developed by Rockwell Automation for demanding industrial motor control applications. As part of the renowned PowerFlex 700 family, this AC drive combines advanced motor control technology, flexible communication capabilities, comprehensive protection features, and high reliability to optimize machine performance and improve energy efficiency across a wide range of industrial processes.
Designed for medium- and high-power applications, the 20BC140A3ANNADC0 provides precise speed regulation, accurate torque control, smooth acceleration and deceleration, and stable operation for three-phase AC induction motors. The drive incorporates advanced vector control algorithms that enable excellent low-speed performance while reducing mechanical stress on motors, gearboxes, belts, and driven equipment.
The PowerFlex 700 series is widely recognized for its modular architecture and compatibility with Rockwell Automation integrated control systems. It supports seamless communication with Allen-Bradley PLCs, HMIs, industrial Ethernet networks, and distributed automation systems, making it an ideal solution for complex manufacturing environments.
With overall dimensions of 689.6 × 308.9 × 275.4 mm and an approximate weight of 37.19 kg, the 20BC140A3ANNADC0 is designed for cabinet installation in industrial control panels requiring reliable motor speed control, energy savings, and long-term operational stability.
Typical applications include conveyor systems, pumps, fans, compressors, mixers, crushers, extruders, packaging machinery, material handling systems, mining equipment, water treatment facilities, HVAC installations, and heavy industrial production lines.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Allen Bradley (Rockwell Automation) |
| Model | 20BC140A3ANNADC0 |
| Product Series | PowerFlex 700 |
| Product Type | AC Drive / Variable Frequency Drive |
| Motor Type | Three-Phase AC Induction Motor |
| Control Method | Vector Control |
| Input Power | Three-Phase AC |
| Output Frequency | Adjustable Variable Frequency |
| Cooling Method | Forced Air Cooling |
| Installation | Cabinet / Panel Mount |
| Protection Functions | Overload, Overvoltage, Undervoltage, Overcurrent, Overtemperature, Short Circuit |
| Communication | Optional Industrial Communication Modules |
| Human Interface | Digital Keypad / HIM Compatible |
| Dimensions | 689.6 × 308.9 × 275.4 mm |
| Weight | Approximately 37.19 kg |
| Typical Application | Industrial Motor Speed Control |
Function and Working Principle
The Allen Bradley 20BC140A3ANNADC0 converts fixed-frequency AC input power into adjustable voltage and frequency output, allowing precise control of motor speed and torque according to process requirements.
Typical Power Flow
Three-Phase AC Power Supply
↓
Rectifier
↓
DC Bus
↓
IGBT Inverter
↓
↓
Three-Phase AC Motor
↓
Industrial Equipment
During operation, the drive continuously monitors motor parameters and adjusts output voltage and frequency to achieve optimum operating performance.
Major operating functions include:
- Variable speed control
- Accurate torque regulation
- Soft motor starting
- Controlled stopping
- Adjustable acceleration and deceleration
- Energy-saving operation
- Dynamic motor protection
- Process optimization
- Automatic fault diagnostics
- Industrial network communication
By precisely matching motor speed with process demand, the drive reduces electrical consumption while improving production efficiency.
Role in Industrial Automation Systems
Within industrial automation systems, the 20BC140A3ANNADC0 functions as the intelligent motor control center between the automation controller and the driven equipment.
Its primary responsibilities include:
- Motor speed regulation
- Torque control
- Process optimization
- Energy management
- Equipment protection
- Fault monitoring
- Network communication
- System diagnostics
The drive integrates easily with Rockwell Automation control platforms, enabling centralized monitoring and simplified maintenance.
Industrial Applications
Manufacturing Automation
Suitable for:
- Automated production lines
- Assembly systems
- Packaging machinery
- Industrial conveyors
- Robotic manufacturing cells
Water and Wastewater Treatment
Common applications include:
- High-capacity pumps
- Booster stations
- Filtration systems
- Wastewater treatment plants
- Water distribution facilities
HVAC Systems
Widely installed in:
- Industrial ventilation systems
- Cooling towers
- Chillers
- Large air handling units
- Building automation systems
Mining and Heavy Industry
Ideal for:
- Crushers
- Conveyors
- Grinding equipment
- Material handling systems
- Mineral processing facilities
Oil, Gas and Chemical Processing
Frequently used in:
- Process pumps
- Compressors
- Agitators
- Mixing equipment
- Refinery applications
Food and Beverage Industry
Applied in:
- Processing equipment
- Packaging machinery
- Filling systems
- Conveyor systems
- Mixing equipment
Installation and System Integration
Proper installation is essential for reliable long-term operation.
Before installation, engineers should verify:
- Supply voltage compatibility
- Motor ratings
- Cabinet ventilation
- Protective grounding
- Cable sizing
- Environmental conditions
- Control wiring
- Communication network requirements
- Cooling airflow clearance
Recommended Installation Procedure
- Disconnect all electrical power.
- Mount the drive securely inside the control cabinet.
- Connect the three-phase power supply.
- Connect the motor output terminals.
- Install protective grounding.
- Connect control wiring.
- Configure communication modules if required.
- Verify all electrical connections.
- Restore system power.
- Configure motor parameters.
- Set acceleration and deceleration values.
- Configure protection settings.
- Test motor rotation.
- Verify communication with the PLC and HMI.
- Complete system commissioning.
Routine inspection and preventive maintenance help maximize service life and operational reliability.
Compatible System Components
| Component | Function |
|---|---|
| ControlLogix PLC | Central automation controller |
| CompactLogix PLC | Machine control |
| PowerFlex 700 AC Drive | Variable frequency motor control |
| Three-Phase AC Motor | Mechanical power output |
| PanelView HMI | Operator interface |
| Ethernet/IP Network | Industrial communication |
| Control Transformer | Control power supply |
| Circuit Breaker | Electrical protection |
| Contactor | Power isolation |
| Dynamic Braking Resistor | Braking energy dissipation |
Recommended Alternative Models
| Model | Product Type | Typical Application |
|---|---|---|
| 20BC140A3ANNADC0 | PowerFlex 700 AC Drive | High-performance industrial motor control |
| 20BD140A3ANNANC0 | PowerFlex 700 AC Drive | Heavy-duty automation |
| 20BC125A3ANNADC0 | PowerFlex 700 AC Drive | Medium-power applications |
| 20BC180A3ANNADC0 | PowerFlex 700 AC Drive | High-capacity motor control |
| PowerFlex 755 Series | Variable Frequency Drive | Advanced integrated automation |
Key Advantages
- High-performance PowerFlex 700 platform
- Advanced vector motor control
- Excellent low-speed torque performance
- Smooth acceleration and deceleration
- Comprehensive motor protection
- Modular communication options
- High operational reliability
- Reduced mechanical wear
- Improved energy efficiency
- Easy integration with Rockwell Automation systems
- Cabinet-mounted industrial design
- Dimensions 689.6 × 308.9 × 275.4 mm
- Approximate weight 37.19 kg
Technical FAQs
What is the Allen Bradley 20BC140A3ANNADC0?
The 20BC140A3ANNADC0 is a PowerFlex 700 AC Variable Frequency Drive designed for precise speed and torque control of three-phase AC motors in industrial automation systems.
What is the primary function of this AC drive?
Its primary function is to convert fixed-frequency AC power into adjustable voltage and frequency output, allowing accurate motor speed control while improving energy efficiency and protecting connected equipment.
Which motor types are compatible?
The drive is primarily designed for compatible three-phase AC induction motors used in industrial machinery and process equipment.
What are the physical dimensions?
The drive measures 689.6 × 308.9 × 275.4 mm.
What is the approximate weight?
The unit weighs approximately 37.19 kg.
Which industries commonly use this drive?
It is widely used in manufacturing, mining, water treatment, HVAC, oil and gas, chemical processing, food and beverage production, logistics, and other heavy industrial applications.
Does the drive provide motor protection?
Yes. It includes comprehensive protection functions such as overload, overcurrent, overvoltage, undervoltage, overheating, and short-circuit protection.
Can this drive communicate with PLC systems?
Yes. The PowerFlex 700 platform supports optional industrial communication modules for integration with Allen-Bradley PLCs and modern industrial automation networks.
Where should the drive be installed?
It is intended for installation inside industrial control cabinets with adequate ventilation, proper grounding, and sufficient clearance for cooling airflow.
Why is preventive maintenance important?
Routine inspection of cooling fans, electrical terminals, ventilation paths, communication connections, and parameter settings helps maximize equipment reliability, minimize downtime, and extend the service life of the drive.
Conclusion
The Allen Bradley 20BC140A3ANNADC0 PowerFlex 700 AC Drive is a robust and intelligent variable frequency drive engineered for demanding industrial motor control applications. Featuring advanced vector control, comprehensive protection functions, modular communication capabilities, and seamless integration with Rockwell Automation systems, it provides precise motor performance while improving energy efficiency and operational reliability.
With dimensions of 689.6 × 308.9 × 275.4 mm and an approximate weight of 37.19 kg, the 20BC140A3ANNADC0 is well suited for cabinet-mounted installations in manufacturing plants, process industries, infrastructure projects, and heavy industrial environments. When integrated with compatible PLCs, HMIs, industrial communication networks, motors, and protection devices, it delivers dependable long-term performance, simplified maintenance, and efficient process control.