Packaging machine troubleshooting

The electromagnet does not pull in. The solution is: first check whether there is a problem inside or outside the host; secondly, check the electromagnet fuse to see if the electromagnet has signs of power, eliminate mechanical jamming, and check if everything is normal. Internal power supply; the reason for this kind of failure is often encountered in the weighing and packaging machine: sensor damage, bridge supply voltage failure, wrong line connection or interruption, and the elimination method is: check the sensor and connection or the host. For the load signal, check the supply bridge and amplifying circuit or computer output display circuit, or remove the main unit, apply a reset signal through the internal short circuit, judge whether the fault is in the machine or from the switch, and then solve the problem.