The electromagnet does not attract, and the main cause of this fault is mostly due to internal faults in the main unit, burnt-out electromagnet coils, interrupted circuits, and other factors. The solution is as follows: First, check whether the problem lies within the internal or external part of the valve pocket packaging machine's main unit; second, check the electromagnetic iron fuse of the valve pocket packaging machine, check if there is any sign of power supply to the electromagnet, eliminate mechanical jams, and test the internal power supply when everything is normal; In weighing packaging machines, the causes of this fault are often: sensor damage, bridge voltage failure, incorrect wiring or interruption, the solution is: test the sensor and connections or the load signal of the main unit, then test the bridge and amplification circuit or the computer output display circuit, sometimes there may also be unstable system stability causing unstable bag quantities. To solve this problem, you can test if the circuit is faulty, or remove the main unit, use internal short-circuiting to apply a reset signal, and determine whether the fault is inside the machine or from the switch, and then solve the problem.
