The application of frequency converters in cranes

Control case of 20T gantry crane
· The system adopts centralized monitoring, centralized operation, and centralized management;
· Enable stepless speed regulation of ordinary asynchronous motors;
· Automatic torque increase setting with high starting torque at low speeds;
· Start smoothing, eliminate mechanical impact force, and protect mechanical equipment;
· The system starts smoothly, reducing the need for gear reducers, couplings, and steel wire ropes mechanical impact;
· The maintenance cost is greatly reduced, and the repair rate of low-voltage electrical appliances, motors, brushes, and resistors is greatly reduced;
· The lifting motor operates in closed-loop vector mode, and the rotation encoder signal feedback makes the alignment more accurate when lifting heavy objects;
· Save energy, save 26% more electricity than the old system, and improve work efficiency by 20–25%.