70
SCT-1100 Weight Transmitter
6.9
Primary/Secondary
Configuration for repetition of the weight on the SCT and the possibility of using the SCT keys to simulate those of
the primary instrument.
For a RS-485 connection, connect the DF485 board and the two instruments, using the terminal of the board and
setting
in
of the SCT.
Both the relays and the analog output and enabled with this configuration. The analog output is programmed as in,
as well as for relays. For setting the relays switching, it is necessary to turn off the primary instruments.
6.10 Analog Output Option
An optional analog output is configurable at 0-20mA, 4-20mA, 0-10Vdc, 0-5Vdc; with minimum and maximum
settable values. The voltage and the output current from the interface are proportional to the gross weight or net
weight present on the scale. See
for connection information.
The analog output is updated every 20ms and takes on the value corresponding to the converted weight; therefore,
if the filter is slowed on the weight, the analog output also slows down.
To configure the parameters, enter the setup mode and
.
Figure 6-3. Analog Output Menu
Parameter
Description
Select the type of analog output:
Parameters displayed in primary mode:
– analog output disabled
– analog output on gross weight
–
analog output on net weight.
Parameters displayed in secondary mode:
– analog output disabled.
– analog output enabled.
Once the functioning mode is confirmed, set the values of the analog output; The digital/analog converter
values are entered (between 0 and 65535) which corresponds to an output value in voltage or in current
The instrument keys have the functions:
–
decreases the selected digit (blinking)
– increases the selected digit (blinking)
– selects the digit (blinking) from left to right
– press once to enter a value, the corresponding output analog value is enabled; Press a second
time to confirm and exit the step
– allows to quickly zero the present value
NOTE: The set function is the same for all configured channels.
Set the maximum value of the analog output:
With a positive weight – the value of the output when the weight is greater than or equal to the full scale
capacity; also corresponds to the overload condition
With negative weight – the value of the output when the negative weight is greater than or equal to the full
scale capacity, also corresponds to the underload condition
The value can be between 0 and 65535 (values of the digital/analog converter); if a higher value is entered,
the instrument displays 0
Table 6-17. Analog Output Parameters
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