DOSAGE
34
remains until a weight value is reached in which the
SLOW FLIGHT WEIGHT
is missing
from the
FINAL WEIGHT.
2.
At this point the
AUTOMATIC SLOW DOSAGE
is displayed indicating the end of the fast dosage and
the beginning of the slow dosage.
3.
When the weight reaches the TARGET (or WEIGHT TO BE DOSED) – THE FLIGHT WEIGHT, the
message
AUTOMATIC FLY DOSAGE
is displayed
6.3
“Manual dosage” type of an activities
a)
Description
This activity has the purpose of manually dosing a product:
-
This activity automatically starts at the end of the previous one.
-
It foresees that the dosage is manually executed by the operator; in fact, the operator must
manually carry out the dosage and give the dosage end command.
-
Once the dosage is started the instrument tares the weight on the scale and enables anyway the fast
dosage output and the product one, connectable to a traffic light that informs the operator to dose
at maximum speed.
-
When the weight reaches the TARGET – SLOW WEIGHT, the fast dosage output is disabled, and the
operator must advance with the fine dosage.
-
When the weight reaches the TARGET - TOLERANCE, the alarm output is disabled: the operator must
continue with the fine dosage until the target is reached.
-
The operator will press for an instant the external INPUT 1 or the START button to end the dosage,
so that:
1)
If the instrument is enabled, the checks on the dosage result start: if the weight of the dosed
material is not within the set tolerance, the "MANUAL DOSING OUT TOLERANCE " error is
signalled, and the error output (default = OUT3) is enabled.
The operator can remove the exceeding weight or add the missing weight; in this phase it is
possible to use the message which appears (
MANUAL DOSING OK
if within the tolerance, or
MANUAL DOSING OUT TOLERANCE
if out of tolerance).
By pressing for an instant the external INPUT 1 or the START button, one exits the error status:
if the mandatory correction is not enabled (see following section) the weight now present will
be considered valid and therefore accumulated in the formula production and in the general
total.
2)
The data of the executed dosage is automatically stored and transmitted through the serial line
for the printing or the storage on PC/PLC.
-
A wait time starts equal to the DATA READING TIME
(
) in order to allow the reading of the
activity data; the instrument waits for this time before passing to the following phase.
b)
Automatic end of the manual dosage and mandatory weight correction
It is possible to decide to have the dosage automatically end, by setting the
WAIT
TIME FOR MANUAL
DOSAGE END
(
); the instrument, after the weight has reached and exceeded the set target value,
waits for the set time, and when it has reached it, it automatically passes to the tolerance check.
Furthermore it is possible to decide if the weight must be in tolerance to proceed with the next activity.
By setting "0":
-
The activity is ended only by pressing for an instant the external INPUT 1 or the START button.
-
The system goes into “EERROR: TIME OUT” if the
MAXIMUM TIME FOR THE DOSAGE
has been
reached.
-
if the tolerance test is enabled (
) and the weight is out of tolerance, this will be anyway
accepted by pressing for an instant the external INPUT 1 or the START button: the system goes
into out of tolerance error and waits for a further confirmation; while if the test is disabled, the
