Unipulse F156, Operation Manual, Page: 76 / 160

6.FUNCTIONS
67
(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), Set Point 1 output signal turns ON. (If the comparison inhibit timer is set, the
timer starts.) After the timer expires, Set Point 1 valve of the material tank is closed to “Set
Point 2”.
(3) 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, Set Point 2
valve of the material tank is closed to “Set Point 3”.
(4) 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 feeding valves are completely
closed.
(5) 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 turns ON.
(6) Raw materials are discharged from the weighing tank to a container. The valves of the
weighing tank should be opened. Completion of discharge is confirmed with the Near Zero
signal. In weighing from the second time onward, (1) ~ (5) are repeated.
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.