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SCAIME Manual : NU-eNod4C-E-0418-196712-F.docx
9
CHECKWEIGHER TRANSMITTER MODE
9.1
Introduction
This operating mode consists of determining the weight of an object while it is present on a conveyor portion on which
a weighing system is fitted.
Note
: The measurement is determined for net measurements only.
When the object arrives on the weighing system, the weight determination cycle can be started:
•
by an input assigned to
‘start checkweigher cycle’
(Fig. 4 & 5). Caution, only input 2 is operational if both
inputs are assigned to the
‘start checkweigher cycle’
function.
•
by a trigger level (Fig. 6) when the load cell signal reaches the specified value.
Fig. 6
Then, during a
‘stabilization time (Ts)’
, the signal is highly disturbed so measurements are not taken into account. Finally,
during a ‘
measuring time (Tm)
’ defined by either:
•
a time value (Fig.4).
•
a duration
prior to an edge on an input assigned to ‘s
top checkweigher cycle
’ (Fig.5).
Caution, only input 2 is operational if both inputs are assigned to the
‘stop checkweigher cycle’
function.
Fig. 5
t
Stab.
time
I - Start cycle
I - End cycle
Load
Result
available
t
Stab.
time
Measuring
time
I - Start cycle
O - Cycle in process
Load
Result
available
Fig. 4
Time
Load cell signal
Communication
Fig. 3
