User manual

66 UA964801 - User manual User manual - UA964801 67
8.4 Digital input functions
On the UA964801 model, digital inputs can be enabled by conguring the par. 95
Digital input 1 and the par. 100 Digital Input 2.
• Run : allows the action of relays and linear output.
•
Hold : locks the conversion.
•
Tare zero (AI) : selects to zero the process value (tare function).
•
Alarm reset: if one or more alarms are selected with manual reset and alarm
conditions are no longer present, closing the digital input it is possible to
restore the alarm output.
•
Totalizer reset : if the totalizer function is active, using the digital input it is
possible to reset the counter.
•
Peaks reset : min. peak/max. peak/peak-to-peak values are reset.
•
Sum total : if the sum function is active, using the digital input it is possible to
increase the “sum” counter as indicated by the process value.
•
Sum reset : if the sum function is active, using the digital input it is possible to
reset the “sum” counter.
•
Cong. lock : if the digital input is active it is not possible to enter conguration
or to modify the setpoints.
Selecting
Digital input 1 or Digital input 2 on the alarm parameters, the related
relays will activate togheter with the digital input; functions selected on
parameters 95 and 100 will continue to work.
8.5 Peak values
The UA964801 is provided with a page
for the visualization of peak values: max.
peak, min. peak and peak-to-peak of
analogue input. Keeping pressed
Rst
it
is possible to reset the visualized values.
8.6 Totalizer function
The totalizer function, which can be enable by par. 9 Totalizer, performs an instant
measurement of the process and sums it on a time basis to the previously totalized
value.
On the dedicated page it is possible to
see the instant process value and the
totalized value: keeping pressed
Rst
it is
possible to reset this value.
Ex.: if a sensor 4 to 20mA with F.s. 9000m
3
/hour is connected, it is necessary to
select
Hour on par. 9 Totalizer. The device will increase the totalized value
considering the m
3
owing each second (2.5m
3
).
8.7 Sum function
The sum function, which can be enabled by par. 10 Sum function, allows to increase
a counter adding the process value on command. It is an application typical for
weighing systems and allows to know the total weighed value.
Press
Sum Function
to enter the
function page. Pressing
+
the Process
value is added to the counter. It is
possible to reset the total value keeping
pressed
Rst
and to x “tare zero” of the
process pressing
Tar
.
Functions tare, sum and reset can be managed also by digital input if enabled on
par. 95
Digital Input 1 and par. 100 Digital Input 2 .