The basic treatment method of packaging scale failure


Release time:

2023-04-03

The mechanical part of the packaging scale is mainly composed of storage hopper, large and small spiral, weighing hopper, discharging transition bin and bag clamping device. The electrical control part is composed of weighing sensor, weighing display instrument, PLC, bag clamping switch, solenoid valve and frequency converter.

Improper operation of the packaging scale will lead to the failure of the quantitative packaging scale, so what causes the failure of the packaging scale and how to deal with it when the failure occurs?

(1) do not clip the bag, do not put the material, usually the bag switch, put the bag switch, control the bag solenoid valve or cylinder problems.

(2) the size of the cutting door, said bucket discharge door can not open or close, usually control the solenoid valve or cylinder problems.

(3) After the material is weighed, the material door cannot be automatically opened to release and loosen the bag. If the manual release button is pressed, it will not work. Generally, there is a problem with the solenoid valve or cylinder that controls the material door. After replacing the spare parts, it will return to normal. If it is feasible to press the manual discharge button, it indicates that the weighing is out of tolerance or the system parameter setting is wrong.

(4) Weighing the leakage of material at the mouth of the bucket or clip bag is usually the problem of the solenoid valve or cylinder because the scale body is not tightly sealed and the air pressure is insufficient (check the air source is greater than 0.4MP).

(5) The measurement is inaccurate and the instrument display is unstable. It may be the zero drift of the instrument (calibration with standard weight) or the parameter setting needs to be corrected again, or the load cell is faulty (replace the sensor and nominal the weight).

(6) When the system cannot discharge normally, set the selection switch to manual, and then press the discharge button for more than 3s, the corresponding packaging scale can return to normal after initialization.