Product Overview
The Allen-Bradley 20BD125A3AYNAD0 is a PowerFlex 700S series AC drive (variable frequency drive) manufactured by Rockwell Automation, configured as a 20B-frame, 208V-class unit with Series B hardware revision and Factory Firmware 6.004 pre-installed. As a member of the renowned PowerFlex 700S platform, the Allen-Bradley 20BD125A3AYNAD0 delivers optimized integration for demanding stand-alone and coordinated drive control applications, combining powerful motor control performance with flexible configuration options that have made the 700S series a trusted workhorse across global industrial automation for over two decades.The Allen-Bradley 20BD125A3AYNAD0 supports V/Hz control, FORCE technology vector control (with and without feedback), and permanent magnet motor control, enabling precise speed and torque regulation across a wide range of motor types and load profiles. With a current rating of approximately 125A (actual nameplate rating subject to voltage class confirmation), the Allen-Bradley 20BD125A3AYNAD0 is typically deployed in 208V-class applications requiring robust power delivery for pumps, fans, conveyors, mixers, and auxiliary machinery in manufacturing and process plants. The drive’s Series B hardware platform incorporates all the proven reliability enhancements of the 700S evolution, while Firmware 6.004 represents a stabilized, field-validated software release with corrections for power-down checksum routines, DPI reference scaling, and active converter coordination behaviors.It is important to note that Rockwell Automation officially discontinued the PowerFlex 700S low-power drive family (including the Allen-Bradley 20BD125A3AYNAD0) as of June 30, 2023, and now recommends migration to the PowerFlex 755 platform. However, the Allen-Bradley 20BD125A3AYNAD0 remains an absolutely critical spare part for the thousands of installed 700S systems still operating reliably in plants worldwide. With IP20/NEMA Type 1 protection, Zero Stacking side-by-side mounting capability, pull-apart control terminal blocks, and optional DriveLogix embedded control, the Allen-Bradley 20BD125A3AYNAD0 continues to deliver exceptional value as a replacement unit, ensuring production continuity without the capital expenditure and engineering effort required for full platform migration. Every Allen-Bradley 20BD125A3AYNAD0 unit supplied is thoroughly tested, firmware-verified, and guaranteed to perform to original factory specifications.
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | 20BD125A3AYNAD0 |
| Manufacturer | Rockwell Automation (Brand: Allen-Bradley) |
| Product Type | PowerFlex 700S AC Drive (Variable Frequency Drive) |
| Series / HW Revision | Series B |
| Factory Firmware | 6.004 |
| Voltage Class | 200–240V AC, 3-phase |
| Current Rating | ~125A (exact rating per nameplate) |
| Control Modes | V/Hz, FORCE Vector Control (with/without feedback), PM Motor Control |
| Overload Capacity | 110% for 1 min; 150% for 3 sec (per 700S platform) |
| PWM Frequency | 4 kHz typical (voltage-dependent) |
| Communication | Optional DPI, SynchLink fiber optic, EtherNet/IP via option modules |
| Embedded Safety | Safe Torque-Off (STO) – PLd/SIL2 Cat 3 certified |
| DriveLogix Option | Supported (embedded Logix engine) |
| Common Bus | AC/DC common bus capable |
| Enclosure Rating | IP20 / NEMA Type 1 |
| Operating Temperature | 0°C to 40°C (no derating), up to 50°C with derating |
| Storage Temperature | -40°C |
| Relative Humidity | 5–95% non-condensing |
| Altitude | 1000 m max without derating |
| Shock | 10G peak, 11 ms duration |
| Vibration | 0.152 mm displacement, 1G peak, 5.5 Hz |
| Power Ride-Thru | 15 ms at full load |
| Mounting | Zero Stacking or side-by-side; panel mounting |
| Product Status | Discontinued by manufacturer (June 30, 2023); available as spare |
| Recommended Migration | PowerFlex 755 AC Drive family |
