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- Allen Bradley
- 20BD077A3ANNACA0
- PowerFlex 700 AC Drive
- USA
- 758.8 x 201.7 x 220 mm
- 24.49 kg
- Xiamen, China
- New & In Stock
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All our products are priced very favorably because we have our own warehouse and supply.
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Product Overview
The Allen Bradley 20BD077A3ANNACA0 PowerFlex 700 AC Drive is a high-performance Variable Frequency Drive (VFD) designed to provide accurate motor speed regulation, outstanding torque control, and dependable operation in demanding industrial automation environments. As part of the proven PowerFlex 700 family, this drive combines advanced vector control technology, intelligent diagnostics, and flexible communication capabilities to maximize production efficiency while reducing energy consumption and equipment wear.
Designed for 480 VAC three-phase power systems, the 20BD077A3ANNACA0 delivers a rated continuous output current of 77 A, making it suitable for 60 HP (45 kW) Normal Duty and 50 HP (37 kW) Heavy Duty motor applications. The drive converts fixed-frequency AC input into adjustable voltage and frequency output, enabling precise speed regulation, rapid dynamic response, smooth acceleration, and stable torque under varying load conditions. This model has been discontinued by the manufacturer but remains widely used for system upgrades, maintenance, and replacement applications.
This configuration includes 24 VDC vector control I/O, sensorless vector control, a full-numeric LCD Human Interface Module (HIM), ControlNet coaxial communication, no encoder feedback, no brake IGBT, no internal braking resistor, and an integrated EMC filter with common-mode choke for improved electromagnetic compatibility.
With dimensions of 758.8 × 201.7 × 220 mm and an approximate operating weight of 24.49 kg (excluding packaging), the drive is designed for cabinet-mounted installations where reliable continuous-duty performance and simplified maintenance are essential.
Typical applications include conveyor systems, pumps, compressors, fans, mixers, packaging machinery, material handling equipment, water treatment systems, HVAC installations, mining equipment, process industries, and OEM automation machinery.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Allen Bradley (Rockwell Automation) |
| Model | 20BD077A3ANNACA0 |
| Product Series | PowerFlex 700 |
| Product Type | AC Drive / Variable Frequency Drive |
| Input Voltage | 480 VAC, Three-Phase |
| Rated Output Current | 77 A |
| Normal Duty Rating | 60 HP (45 kW) |
| Heavy Duty Rating | 50 HP (37 kW) |
| Motor Control | Sensorless Vector Control |
| Control I/O | 24 VDC Vector Control |
| Human Interface Module | Full-Numeric LCD HIM |
| Communication | ControlNet Coaxial |
| Feedback | No Encoder Feedback |
| Brake IGBT | Not Installed |
| Internal Brake Resistor | Not Included |
| EMC Filter | Integrated EMC Filter with Common-Mode Choke |
| Protection Rating | IP20 / NEMA Type 1 |
| Cooling Method | Forced Air Cooling |
| Mounting Method | Cabinet / Panel Mount |
| Dimensions | 758.8 × 201.7 × 220 mm |
| Weight | Approximately 24.49 kg |
Function and Working Principle
The 20BD077A3ANNACA0 converts fixed-frequency three-phase AC power into adjustable voltage and frequency output to precisely control the speed and torque of AC motors.
Typical Power Conversion Process
Three-Phase AC Input
↓
Rectifier
↓
DC Bus
↓
IGBT PWM Inverter
↓
↓
Three-Phase AC Motor
↓
Industrial Equipment
The drive continuously monitors voltage, current, output frequency, motor load, and operating temperature. Advanced sensorless vector algorithms automatically optimize motor performance to deliver smooth acceleration, excellent low-speed torque, stable operation, and efficient energy utilization.
Primary operating functions include:
- Precision motor speed regulation
- Sensorless vector control
- High starting torque
- Adjustable acceleration and deceleration
- Soft start and controlled stopping
- Automatic energy optimization
- Continuous fault monitoring
- Built-in diagnostic functions
- Comprehensive motor protection
- High-speed ControlNet communication
Role in Industrial Automation Systems
The 20BD077A3ANNACA0 functions as the intelligent interface between industrial PLC systems and three-phase AC motors.
Its primary responsibilities include:
- Variable speed control
- Torque optimization
- Energy management
- Machine protection
- Process automation
- Fault diagnostics
- PLC integration
- Real-time ControlNet communication
The integrated ControlNet interface enables reliable deterministic communication with ControlLogix, CompactLogix, HMIs, and SCADA systems for coordinated industrial automation.
Industrial Applications
Manufacturing Automation
Suitable for:
- Automated production lines
- Conveyor systems
- Packaging machinery
- Material handling equipment
- Robotic manufacturing cells
Water and Wastewater Treatment
Typical applications include:
- High-capacity pumps
- Booster stations
- Aeration systems
- Filtration equipment
- Chemical dosing systems
HVAC Systems
Ideal for:
- Cooling towers
- Air handling units
- Chillers
- Ventilation systems
- Building automation
Oil and Gas Industry
Frequently installed on:
- Compressors
- Pipeline pumps
- Transfer systems
- Process machinery
- Auxiliary equipment
Mining and Heavy Industry
Suitable for:
- Crushers
- Conveyors
- Feeders
- Bulk material handling
- Mineral processing equipment
OEM Industrial Machinery
Commonly integrated into:
- Plastic processing machines
- Textile machinery
- Machine tools
- Woodworking equipment
- Customized automation systems
Installation and System Integration
Proper installation helps maximize performance and long-term reliability.
Before installation, engineers should verify:
- Input voltage compatibility
- Motor specifications
- Cabinet ventilation
- Protective grounding
- Cable sizing
- Environmental conditions
- Control wiring
- ControlNet network configuration
- Maintenance clearance
Recommended Installation Procedure
- Disconnect all electrical power.
- Mount the drive securely inside the control cabinet.
- Connect the three-phase input supply.
- Connect the motor output terminals.
- Install protective grounding.
- Complete all control wiring.
- Connect the ControlNet communication cable.
- Verify all electrical connections.
- Restore system power.
- Configure motor parameters.
- Set acceleration and deceleration values.
- Configure protection settings.
- Verify motor rotation.
- Perform operational testing.
- Complete commissioning.
Routine preventive maintenance should include inspection of cooling fans, ventilation passages, electrical terminals, communication wiring, and power components to ensure maximum reliability.
Compatible System Components
| Component | Function |
|---|---|
| ControlLogix PLC | Central automation controller |
| CompactLogix PLC | Machine control |
| PowerFlex 700 AC Drive | Variable frequency motor control |
| PanelView Plus HMI | Operator monitoring and configuration |
| ControlNet Network | Real-time industrial communication |
| Three-Phase AC Motor | Mechanical drive |
| Line Reactor | Harmonic reduction |
| Circuit Breaker | Electrical protection |
| Dynamic Braking Resistor | External braking option |
| Industrial Sensors | Process monitoring |
Recommended Alternative Models
| Model | Product Type | Typical Application |
|---|---|---|
| 20BD077A3ANNACA0 | PowerFlex 700 AC Drive | ControlNet industrial automation |
| 20BD077A3ANNACC1 | PowerFlex 700 AC Drive | Similar ControlNet configuration |
| 20BD077A3ANNANC0 | PowerFlex 700 AC Drive | Standard industrial applications |
| 20BD096A3ANNACA0 | PowerFlex 700 AC Drive | Higher output capacity |
| PowerFlex 755 | Variable Frequency Drive | Next-generation industrial motor control |
Key Advantages
- Proven PowerFlex 700 platform
- Rated output current of 77 A
- Supports 60 HP Normal Duty and 50 HP Heavy Duty
- Advanced sensorless vector control
- 24 VDC vector control I/O
- Integrated ControlNet communication
- Full-numeric LCD Human Interface Module
- EMC filter with common-mode choke
- Intelligent diagnostics
- Comprehensive motor protection
- Reliable continuous-duty operation
- Dimensions 758.8 × 201.7 × 220 mm
- Approximate weight 24.49 kg
Technical FAQs
What is the Allen Bradley 20BD077A3ANNACA0?
The 20BD077A3ANNACA0 is a PowerFlex 700 Variable Frequency Drive designed for high-performance speed and torque control of three-phase AC motors in industrial automation systems.
What is the rated output current?
The drive delivers a continuous output current of 77 A, supporting 60 HP (45 kW) Normal Duty and 50 HP (37 kW) Heavy Duty applications.
Does this model include a Human Interface Module?
Yes. It is equipped with a full-numeric LCD Human Interface Module (HIM) for local programming, monitoring, and diagnostics.
What communication interface does this model use?
This configuration includes an integrated ControlNet coaxial communication module, enabling deterministic communication with compatible Rockwell Automation controllers.
Does the drive include a brake IGBT?
No. This model is supplied without an internal brake IGBT.
What are the physical dimensions?
The drive measures 758.8 × 201.7 × 220 mm.
What is the approximate weight?
The drive weighs approximately 24.49 kg.
Which industries commonly use this drive?
It is widely used in manufacturing, water treatment, HVAC, mining, oil and gas, material handling, packaging, and OEM industrial automation.
What protection functions are included?
The drive incorporates overload, overcurrent, overvoltage, undervoltage, overtemperature, ground fault, and short-circuit protection to ensure reliable industrial operation.
Why is preventive maintenance important?
Routine inspection of cooling systems, communication wiring, ventilation channels, and electrical terminals helps maximize operational reliability, reduce downtime, and extend equipment service life.
Conclusion
The Allen Bradley 20BD077A3ANNACA0 PowerFlex 700 AC Drive is a dependable industrial variable frequency drive engineered for demanding motor control applications. Combining advanced sensorless vector control, integrated ControlNet communication, intelligent diagnostics, and comprehensive protection functions, it delivers precise speed regulation, excellent torque performance, and reliable long-term operation.
With dimensions of 758.8 × 201.7 × 220 mm and an approximate weight of 24.49 kg, the 20BD077A3ANNACA0 is an ideal solution for cabinet-mounted industrial automation systems requiring high-performance motor control, seamless network integration, and dependable continuous-duty operation.