Scale parameters and functions
8.3 DR 3 calibration parameters
SIWAREX WP231
74 Manual, 07/2014, A5E31238908A-02
Standstill waiting time is a maximum waiting time for standstill upon the execution of a
command which depends on standstill (taring, zeroing, registering). A technology message is
generated if the command cannot be executed during the standstill waiting time because
there is no standstill.
If the standstill waiting time is equal to zero, a command requiring standstill is rejected
immediately if there is no standstill.
Low-pass filter limit frequency
There is a critically damped low-pass filter for suppressing faults. The diagram below shows
the step response of the filter (f = 2 Hz). The entry "0" means that the filter is switched off. A
limit frequency of between 0.01 and 20.0 Hz can be specified.
Figure 8-2 Step-forced response of the digital low-pass filter when f = 2 Hz
The definition of the limit frequency is extremely important for the suppression of faults.
Defining the limit frequency defines the "speed" of the scales' response to changes in the
measured value.
A value of 5 Hz, for example, results in a relatively rapid response to a change in weight; a
value of 0.5 Hz makes the scales "slower".
The number of the filter defines the effect of damping. The values 2, 4, 6, 8, and 10 can be
set. The higher the selected filter number, the higher the effect.
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