The 25B-D2P3N114 is a compact PowerFlex 525 adjustable frequency AC drive from Rockwell Automation, designed to control small three‑phase induction or permanent‑magnet motors in conveyors, fans, pumps, mixers, and general‑purpose machinery. It belongs to the PowerFlex 525 family and is factory rated for 0.75 kW (1 HP) at 380…480 V AC, 3‑phase input, delivering up to 2.3 A output current for both Normal Duty and Heavy Duty applications. The drive provides variable speed control with an output frequency range of 0…500 Hz, allowing flexible speed profiles and process optimization for small motor loads.
Electrically, the 25B-D2P3N114 accepts 323…528 V AC, 3‑phase, 50/60 Hz input and outputs 0…460 V AC, 3‑phase, supporting a wide range of IEC and NEMA motors in the 1 HP class. It supports multiple control methods, including Volts‑per‑Hertz (V/Hz), sensorless vector control (SVC), closed‑loop velocity vector, and permanent‑magnet motor control, so it can handle standard induction motors as well as high‑efficiency PM motors. The drive includes a built‑in brake IGBT for dynamic braking, an integral EMC filter for reduced electrical noise, and a Safe Torque‑Off (STO) function certified to SIL 2 / PL d, Cat. 3, enabling safe stopping without fully removing mains power.
From a usability standpoint, this unit is a Frame Size A PowerFlex 525 with an IP20 / NEMA open‑type enclosure for panel mounting or DIN‑rail mounting, and it supports Zero‑Stacking™ to save cabinet space when mounted side‑by‑side. The front panel features an integral keypad with potentiometer and LED display for local setup and operation, while configuration and diagnostics can also be done via USB and Rockwell tools using the removable control module. Embedded communications include EtherNet/IP and RS‑485 (DSI) as standard, supporting integration with Logix PACs and other controllers without extra network option cards.
Protection features include over‑current, bus under‑voltage/over‑voltage trips, motor overload, phase‑to‑phase and phase‑to‑ground protection, plus approximately 100 ms power ride‑through to improve robustness on unstable mains. Four independently programmable accel/decel ramps (0–600 s), integrated PointStop, and built‑in PID support allow fine control of motor speed and process variables in small systems. The drive is designed for ambient temperatures up to 50 °C without spacing and can operate up to 70 °C (158 °F) with derating and appropriate mounting, making it suitable for compact panels in demanding industrial environments.
