Unipulse F156 Operation Manual page 79

6.FUNCTIONS
(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
material tank are closed.
(3) By setting external input; Tare subtraction ON, etc., 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.) After the timer expires, the discharge valve (Set Point 1) is closed to
"Set Point 2".
(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.) After the timer expires, the discharge
valve (Set Point 2) is closed to "Set Point 3".
(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.
The feeding valves and discharge valves should be opened and closed
through the sequencer or relay sequence according to the control signals from
the F156.
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