Black 220V AC Digital Speed Controller

A compact, black-finished digital speed controller engineered for 220V AC input and compatible with motors up to 400W. With physical dimensions of 9 × 10 × 6 cm (3.54 × 3.94 × 2.36 inches), it balances robustness and space efficiency for installation in cabinets, machinery frames or mobile test benches. At its core lies an MCU-based control architecture delivering precise, low-noise regulation across the full 90–1400 rpm speed band. The digital display menu enables fast parameter selection: users configure screen update frequency and decide how numeric targets appear — with seamless auto-conversion between representations. Slow acceleration and deceleration profiles protect drive trains from impact loading, while dual control methods (front-panel knob and external switch input) accommodate everything from benchtop experiments to factory-floor integration. The knob is designed for intuitive mapping to maximum speed, simplifying daily use. Blocking protection safeguards against locked-rotor damage by monitoring operational feedback and disabling output before thermal thresholds are exceeded. Complementing this, the cyclic operation function supports programmable ON/OFF timing — useful for fermentation controls, timed ventilation, or educational robotics where scheduled motion is required without complex programming.