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For general bridge and gantry cranes that adopt variable frequency speed control, it is recommended that special-purpose variable frequency motor be used. Our frequency inverter provides close-loop vector control way for hoisting mechanism, open-loop vector control way for big and small cart mechanisms, which ensure hoisting mechanism does not slip at low speed and full load, big and small carts mechanisms start and brake smoothly. It is highly integrated, and special-purpose function for crane can be realized without using PLC.

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