The electromagnet does not attract. The reasons for this failure are mostly due to various reasons such as internal failure of the host, burnout of the electromagnet coil, and line interruption. The solution is: first check whether the problem is inside or outside the host; secondly, check the electromagnet fuse to see if the electromagnet has signs of power on, eliminate mechanical obstruction, and detect the internal power supply when everything is normal; the reasons for this failure often encountered in weighing and packaging machines are: sensor damage, bridge supply voltage failure, incorrect line connection or interruption. The elimination method is: detect the load signal of the sensor and the connection or the host, and then detect the bridge supply and amplification circuit or computer output display circuit. Sometimes the system stability is not good, resulting in unstable bag filling volume. To solve this problem, you can try to see if the line is faulty, or remove the host, apply a reset signal through an internal short circuit, and determine whether the fault is located in the machine or from the switch, and then solve the problem.
