Fuji AF-300 P11

The AF-300 P11 is a variable torque VFD jointly branded GE Fuji Electric, designed specifically for fan and pump applications, available in multiple HP ratings. This AF-300 P11 adopts PWM V/F control with built-in energy saving algorithm, supporting 200–240V or 380–480V three-phase AC input. The AF-300 P11 features soft start, sleep/wake function, and integrated PID loop for constant pressure and constant flow control, optimized for centrifugal pump and fan load characteristics.

This AF-300 P11 accepts 4-20mA and 0-10V analog speed reference, with digital input terminals for run/stop and interlock signals. The detachable keypad supports local parameter setting, status viewing and fault code reading. It includes standard protection functions: overcurrent, overvoltage, undervoltage, overtemperature and stall protection. The model suffix defines HP, voltage class and enclosure type (NEMA 1 or NEMA 4). It supports optional communication boards for Modbus RTU to connect with PLC and SCADA systems.

The AF-300 P11 is widely used in HVAC, water supply, wastewater treatment and circulating pump systems. The AF-300 P11 series has been discontinued. Most available AF-300 P11 units are tested surplus spare parts for replacement and maintenance of old pump and fan drive systems.