Saia-Burgess Controls AG
Manual for PCD2|3.W7x0
│ Document 26-
833 E
NG07 │ 2018-10-18
Configuration
3
3-1
3
Configuration
The weighing module will only work correctly if the necessary parameters are
present when the module is started up. These parameters are permanently stored
in the module and are automatically passed to the A/D converter and the computer
at start-up. To guarantee automatic start-up, the parameters must be written to the
weighing module at least once.
All operating parameters are entered in the Adjust window for the FBox WM_Con
-
fig.
Sensitivity of connected cell
Gain
The target value for amplification is passed to the weighing module in encoded
form.The default setting is 2 mV / V
Table of values:
Gain
Weighing cell
Coding
1
0
2
1
4
4 mV / V
2
8
2 mV / V
3
16
1 mV / V
4
32
0.5 mV / V
5
64
6
128
7
Set digital filter
Dfil
The bandwidth of the A/D converter can be preset in a range from 20 to 2,000. This
represents a conversion time of 1.2 to 120 ms.
Filter values selected from the Filter table.
Set post-filter
Pfil
At the output from the A/D converter, the average of a predefined number of
weight measurements is calculated. This number is assigned values from 0.2 to
20. With values 0 and 1, the averaging is deactivated.
Admitted staggering
Gap
Gap defines when the post-filter is activated within the weighing cycle. The range
of values is 0 to 255, with 1 representing roughly 1/65,000 of the nominal loading
of the cell. Normal setting: 3 to 20.
In operation, the weighing process is repeated on a cyclical basis. The number of
cycles per second is between 8 and 800, depending on the setting of the digital
filter. If the difference between 2 weighing cycles is greater than the Gap, the post-
filter is set to the current actual value. The average of the most recent weighing
cycles is calculated from the point at which the results from successive weighing
cycles vary by less than the Gap.
