6.DISCHARGING CONTROL MODE
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(1) The valves of the material tank are opened by the lower limit signal, and raw materials are
fed into the weighing tank.
(2) It is detected by the upper limit signal that the weighing tank is full, and the valves of the mate-
rial tank are closed.
(3) By setting external input Tare subtraction ON (or with the
key on the panel), Net
weight is zeroed. (Tare subtraction)
(4) The discharge valves are fully opened to start discharging. When the weighed value reaches
(Final - Set Point 1), Set Point 1 output signal turns ON. (If the comparison inhibit timer is set,
the timer starts.) The discharge valve (Set Point 1) is closed.
(5) When the weighed value reaches (Final - Set Point 2), Set Point 2 output signal turns ON. (If the
comparison inhibit timer is set, the timer starts.) The discharge valve (Set Point 2) is closed.
(6) When the weighed value reaches (Final - Compensation), Set Point 3 output signal turns ON,
and if the judging timer is set, the timer starts. The discharge valves are completely closed.
(7) After the judging timer expires, Over/Under judgment is made. If the weighed value exceeds the
range of the Over/Under setting value, the over signal or under signal is output. In weighing
from the second time onward, (3) ~ (6) are repeated in a like manner.
(8) When the weighing tank runs short of raw materials, the valves of the material tank are opened
by the output of the lower limit signal to feed raw materials into the weighing tank.
TARE
The feeding valves and discharge valves should be opened and closed through
the sequencer or relay sequence according to the control signals from the
F701-C.
