Delta Electronics VFD022EL21A Variable Frequency Drive

Delta Electronics VFD022EL21A is a 3 HP (2.2 kW) AC variable frequency drive that accepts 230 V AC single-phase input and delivers 0–230 V AC three-phase output for precise motor speed control. In PLC-controlled systems it regulates speed and torque of single-phase powered three‑phase induction motors in pumps, fans, conveyors, compressors, and other small automation equipment. Key specifications include V/F control with sensorless vector operation, an output frequency range of 0–400 Hz, and an overload capacity of 150% for 60 seconds, with RS-485 (Modbus) communication. Protection features include overcurrent, overvoltage, undervoltage, overload, and overheating; cooling is forced air, mounting is panel‑mount, and the operating temperature range is -10°C to 50°C. Common replacements for this model include Delta VFD022EL23A, VFD022B21A, and Schneider ATV12HU22M2.