29
5
FUNCTIONS
29
FUNCTIONS
Chapter
5
5-13.
Discharging Control Mode
The discharging control means the control method for discharging raw material from the hopper or
tank.
F160 enables to discharge accurate quantity with the proper combination of setting the control of
Final, Set Point 2, Set Point 1, Compensation and Judging Over, Under, Go and Timer for
Comparison Inhibit, Judging.
According to the way of discharging, Feeding, Discharging or Simple comparison control or
Sequence control is selectable.
■
Feeding Weighing and Discharging Weighing
Feeding weighing
A method controlling a weight while feeding raw materials into a measuring tank (hopper).
Example of feeding weighing.
In this example system, raw materials are to be fed from the material tank to the weighing tank. At
first, the feeding valves are to be fully opened to feed, and closed in the order of SP1
→
SP2, and
SP2
→
SP3 at the time of Final - Set Point 1, and Final - Set Point 2, respectively. The feeding
valves are to be completely closed at the time of Final - Compensation. The weighed raw materials
are to be discharged to a container by opening the discharge valves.
(1) By setting external input; Tare subtraction ON, etc., Net weight is zeroed. (Tare subtraction)
(2) The feeding valves are fully opened to start feeding. When the weighed value reaches (Final -
Set Point 1), SP1 output signal turns ON. (If the comparison inhibit time is set, the timer starts.)
After the timer expires, SP1 valve of the material tank is closed to “SP2”.
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