Product Description1, Electrical system is controlled by PLC and provide generic interface, it is low breakdown, easy installation and realize "Plug & Work" function. 2, There is torque limiter system to prevent the damage by Lock-Rotor, it make the motor durable. 3, There is Electro-optical Sensor Protection System (patent number: 2010 2 0128833.3) to protect the coil not be broken by coil lifter. 4, There is rotation mechanism (optional) that coil lifter can rotate any angle what is preset. 5, There is automatic hook hanging mechanism (optional) that we can hang the hook by automatically, the work will be saft and simple. The coil ifter with Screw Axis is low speed for claw open and close, the weight is heavier than other type, the screw axis is self-lock that the coil lifter will no open its claw by accident.