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- Allen Bradley
- 20BD077A0ANNAND0
- 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 20BD077A0ANNAND0 PowerFlex 700 AC Drive is a high-performance Variable Frequency Drive (VFD) from the renowned PowerFlex 700 series, engineered to deliver reliable motor speed regulation, advanced vector control, and comprehensive protection for demanding industrial automation applications. Designed for three-phase AC induction motors, the drive combines intelligent diagnostics, flexible configuration, and robust construction to improve productivity, reduce energy consumption, and extend equipment service life. The model has been discontinued by the manufacturer but remains widely used in existing industrial systems and replacement projects.
Designed for 480 VAC three-phase power systems, the 20BD077A0ANNAND0 provides a rated continuous output current of 77 A, supporting 60 HP (45 kW) Normal Duty and 50 HP (37 kW) Heavy Duty motor applications. The drive converts fixed-frequency AC input into variable voltage and frequency output, enabling smooth acceleration, accurate speed regulation, and stable torque under varying load conditions.
This configuration features 120 VAC vector control I/O, sensorless vector control, a blank front cover without a Human Interface Module (HIM), no internal communication module, no encoder feedback, no brake IGBT, no internal braking resistor, and an integrated EMC filter with common-mode choke. Optional communication adapters, including EtherNet/IP, DeviceNet, ControlNet, PROFIBUS, and Modbus, can be installed to support various industrial networking requirements.
With dimensions of 758.8 × 201.7 × 220 mm and an approximate weight of 24.49 kg, the drive is suitable for cabinet-mounted industrial installations requiring reliable continuous-duty performance and simplified maintenance.
Typical applications include conveyor systems, pumps, compressors, fans, mixers, packaging machinery, process automation, water treatment plants, HVAC equipment, mining machinery, material handling systems, and OEM industrial equipment.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Allen Bradley (Rockwell Automation) |
| Model | 20BD077A0ANNAND0 |
| 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 / Vector Control |
| Control I/O | 120 VAC Vector Control I/O |
| Human Interface Module | Blank Cover (No HIM) |
| Communication | Standard DPI Port (No Internal Communication Module) |
| 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 20BD077A0ANNAND0 converts fixed-frequency three-phase AC input power into adjustable voltage and frequency output, allowing accurate control of motor speed and torque.
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, frequency, temperature, and motor load. Advanced vector control algorithms optimize motor performance to provide smooth acceleration, high starting torque, excellent low-speed stability, and improved operating efficiency.
Primary operating functions include:
- Precision motor speed regulation
- Sensorless vector control
- High starting torque
- Adjustable acceleration and deceleration
- Soft start and controlled stop
- Automatic energy optimization
- Intelligent fault diagnostics
- Continuous operating condition monitoring
- Comprehensive motor protection
- Expandable industrial communication
Role in Industrial Automation Systems
The 20BD077A0ANNAND0 serves as the intelligent interface between industrial PLC systems and AC motors.
Its primary functions include:
- Variable speed regulation
- Torque optimization
- Energy management
- Equipment protection
- Process automation
- Fault diagnostics
- PLC integration
- Centralized monitoring
Its modular architecture allows future expansion through optional communication modules without replacing the base drive.
Industrial Applications
Manufacturing Automation
Typical applications include:
- Automated production lines
- Conveyor systems
- Packaging equipment
- Material handling systems
- Robotic manufacturing cells
Water and Wastewater Treatment
Suitable for:
- Booster pumps
- Filtration systems
- Aeration equipment
- Chemical dosing systems
- Municipal pumping stations
HVAC Systems
Common applications include:
- Air handling units
- Cooling towers
- Chillers
- Ventilation systems
- Building automation
Oil and Gas Industry
Frequently installed on:
- Compressors
- Pipeline pumps
- Process equipment
- Auxiliary machinery
- Transfer systems
Mining and Heavy Industry
Ideal for:
- Crushers
- Conveyors
- Feeders
- Processing equipment
- Bulk material handling systems
OEM Industrial Equipment
Commonly integrated into:
- Plastic processing machinery
- Textile equipment
- Machine tools
- Woodworking machinery
- Customized automation systems
Installation and System Integration
Proper installation ensures reliable long-term operation and maximum service life.
Before installation, engineers should verify:
- Input voltage compatibility
- Motor specifications
- Cabinet ventilation
- Protective grounding
- Cable sizing
- Environmental conditions
- Control wiring
- Optional communication requirements
- Maintenance clearance
Recommended Installation Procedure
- Disconnect all electrical power.
- Mount the drive securely inside the control cabinet.
- Connect the three-phase input power supply.
- Connect the motor output terminals.
- Install protective grounding.
- Complete all control wiring.
- Install optional communication modules if required.
- Verify all electrical connections.
- Restore system power.
- Configure motor parameters.
- Set acceleration and deceleration times.
- Configure protection settings.
- Verify motor rotation.
- Perform operational testing.
- Complete commissioning.
Routine preventive maintenance should include inspection of cooling fans, ventilation passages, electrical terminals, and power components to maximize reliability and extend equipment life.
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 | Optional operator interface |
| EtherNet/IP Adapter | Optional industrial networking |
| DeviceNet Adapter | Optional fieldbus communication |
| Three-Phase AC Motor | Mechanical power output |
| Line Reactor | Harmonic mitigation |
| Dynamic Braking Unit | External braking solution |
| Circuit Breaker | Electrical protection |
Recommended Alternative Models
| Model | Product Type | Typical Application |
|---|---|---|
| 20BD077A0ANNAND0 | PowerFlex 700 AC Drive | Standard industrial motor control |
| 20BD077A0ANNANC0 | PowerFlex 700 AC Drive | Standard 24 VDC control configuration |
| 20BD077A0ANNACC1 | PowerFlex 700 AC Drive | ControlNet communication |
| 20BD096A0ANNAND0 | PowerFlex 700 AC Drive | Higher output capacity |
| PowerFlex 755 | Variable Frequency Drive | Next-generation industrial automation |
Key Advantages
- Proven PowerFlex 700 architecture
- Rated output current of 77 A
- Supports 60 HP Normal Duty and 50 HP Heavy Duty
- Advanced sensorless vector control
- 120 VAC vector control I/O
- Expandable communication architecture
- Integrated 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 20BD077A0ANNAND0?
The 20BD077A0ANNAND0 is a PowerFlex 700 Variable Frequency Drive designed for precise speed and torque control of three-phase AC induction motors in industrial automation systems.
What is the rated output current?
The drive delivers a continuous rated output current of 77 A, supporting 60 HP (45 kW) Normal Duty and 50 HP (37 kW) Heavy Duty motor applications.
Does this model include a Human Interface Module?
No. This configuration is supplied with a blank front cover, allowing an optional HIM to be installed if required.
Does the drive include an internal communication module?
No. It includes the standard DPI communication interface and supports optional communication adapters for EtherNet/IP, DeviceNet, ControlNet, PROFIBUS, and Modbus.
Does the drive include encoder feedback?
No. This configuration is designed for sensorless vector control and does not include encoder feedback.
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, HVAC, water treatment, mining, oil and gas, packaging, material handling, and OEM industrial automation.
What protection functions are included?
The drive incorporates overload, overcurrent, overvoltage, undervoltage, overtemperature, ground fault, and short-circuit protection for reliable industrial operation.
Why is preventive maintenance recommended?
Regular inspection of cooling fans, ventilation passages, electrical terminals, and power components helps reduce downtime, improve operational reliability, and extend the service life of the drive.
Conclusion
The Allen Bradley 20BD077A0ANNAND0 PowerFlex 700 AC Drive is a dependable industrial variable frequency drive engineered for demanding motor control applications. Combining advanced sensorless vector control, intelligent diagnostics, flexible expansion capability, and comprehensive protection functions, it delivers precise speed regulation, high 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 20BD077A0ANNAND0 is an ideal solution for cabinet-mounted installations in manufacturing plants, process industries, HVAC systems, mining operations, water treatment facilities, and other industrial environments requiring efficient and reliable AC motor control.