6.DISCHARGING CONTROL MODE
72
6-1-2. Discharging Weighing
First supply raw material into a metering tank (hopper), then controls a weight while discharging
raw material from the metering tank.
Example of discharging weighing
In discharging weighing, the amount of discharge can be weighed by adding negative weighed
values. In this example system, raw materials are to be fed from the material tank to the weighing
tank, and a fixed quantity of raw materials are to be discharged from the weighing tank to a
container. At first, the discharge valves of the weighing tank are to be fully opened to discharge raw
materials, and the discharge valves are to be closed in the order of Set Point 1
→
Set Point 2, and
Set Point 2
→
Set Point 3 at the time of Final - Set Point 1, and Final - Set Point 2, respectively. The
discharge valves are to be completely closed at the time of Final - Compensation, when one
measurement is completed. When the weighing tank runs short, the feeding valves are to be opened
to replenish the weighing tank with raw materials from the material tank to weigh.
F701-C
