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Author: Smartweigh–Multihead Weighter
The multihead weigher is a method of metering verification and compounding. This method sets the main parameters for the preparation of multiple feeders according to the output device of the industrial computer. The load cell obtains the weighing data signal of each feeder and transmits it to the PLC control module. PLC control The module outputs the real-time adjustment data signal through the soft starter and the actuator to control the feeder to carry out feeding and adjust the reliability of the total compounding flow. Its characteristics depend on the process implemented in this method. The main parameters of the configuration set by the industrial control computer, including the total flow, material level limit, material level minimum limit, feeding time, set the total flow adjustment, in addition, connect the load sensor data signal, the system software conducts self-examination; 2) Determine whether If the result is yes, turn on the automatic switch, and operate the soft starter according to the starting speed with the key parameters and clear main parameters, and operate the equipment at the starting speed; if the result is no, execute the process 11); 3) After 60 seconds of operation , carry out data information comparison, and enter the automatic batching control; 4) Determine whether the material in the silo is lower than the feeding limit setting, if the result is yes, get the feeding boundary alarm; if the result is no, implement process 5); 5) Determine whether it is lower than the lower limit of the material level, if the result is yes, open the feeding valve to start feeding; if the result is no, implement the process 6); 6) Determine whether it exceeds the lower limit of the material level, common fault alarm;, implement Process 7); if the result is no, get the feeding 7) after 60 seconds to distinguish whether the material level limit is exceeded, if the result is F, close the feeding valve to terminate the feeding and implement the process 8); if the result is no, the feeding valve maintains 8) Distinguish whether to enter PID adjustment, if the result is yes, just start PID adjustment: if the specific total flow exceeds the set total flow, the PID adjustment reduces the rate and outputs it to the soft starter; if the specific total flow is lower than the set Total flow, PID adjusts the lifting rate and outputs it to the soft starter; if the result is no, go back to process 2); 9) Determine whether the difference A between the specific total flow and the set total flow is lower than a certain value and exceeds the allowable range, if If the result is yes, get a railway bridge alarm; 10) Identify whether the square root of the difference A between the specific total flow and the set total flow exceeds a certain value and is within the allowable range, if the result is yes, get a deviation alarm; 11) Identify the system Whether the software is stopped, when the automatic switch is pressed, the system software stops running, and the machine equipment is powered off.
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