DOSAGE
35
instrument passes directly to the following activity.
By setting a value > than 0 but less than “99999.9”:
-
The activity is automatically ended after the weight has reached and exceeded the set target value
and the time is elapsed.
-
The system goes into “EERROR: TIME OUT” if the
MAXIMUM TIME FOR THE DOSAGE
has been
reached, before reaching the dosage end time.
-
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 errror and waits for a further confirmation; while if the test is disabled, the
instrument passes directly to the following activity.
By setting “99999.9”:
-
The activity is ended only by giving external INPUT 1 or the START button
-
The system does not go into out of dosage time error even if the
MAXIMUM TIME FOR THE
DOSAGE
has been set.
-
if the tolerance test is enabled (
) the weight is accepted only if it is within tolerance; the
external INPUT 1 or the START button do not end the activity until the weight becomes within
tolerance.
c)
Phase of the activity shown on the display
R1 and R2 relay (dosage and speed relays) are enabled: the process then starts at maximum speed.
Unlike the automatic dosage, during the loading the status bar of the display shows the message:
1.
MANUAL FAST DOSAGE
indicates that the material is dosed at the maximum speed; this remains
until a weight value is reached in which a
SLOW WEIGHT
is missing from the
FINAL WEIGHT
.
2.
At this point the
MANUAL DOSING OUT TOLERANCE
is displayed indicating the end of the fast
dosage, and the beginning of the slow dosage and also that the weight is not within the minimum
tolerance.
3.
When the weight is again within the
TOLERANCE
interval, the message
MANUAL DOSING OK
is
shown. If at this point the maximum tolerance value is exceeded, the message
MANUAL DOSING
OUT TOLERANCE
will again be displayed.
6.4
“Unloading” type of an activities
It is possible to execute 3 different unloading methods of the silo:
6.4.1
Total unloading of the silo
a) Description
This activity has the purpose of completely unloading the silo:
-
It is entered at the end of a loading formula or at the end of a partial or split unloading activity (see
following unloading methods), so that the remaining material is unloaded.
-
It may also be entered in a single component formula, becoming a formula which allows the total
unloading of the silo, and may be enabled also without having to load the silo.
-
In order to obtain a total unloading activity, one should enter an unloading activity in the activity
database; then, in the formula, one should enter the unloading activity with a target equal to 0
-
It is possible to program in the activity database how the unloading should start, once the previous
activity has ended: automatically or manually (by pressing the external INPUT 1 or the START
button).
-
Once the dosage is started the instrument zeroes the weight on the scale and enables the
approximate dosage output and the product one: the complete unloading always takes place at
