TDD
page 14
TDD
K06/0416
11.5. Filter (only for TDD-1… and TDD-3…)
The filter function "
Filt
" makes the measured value for switching purposes the
running average from the measured value samples. The following values can be
adjusted (see section 9. Adjustments):
1 / 2 / 4 / 8 / 16 / 32 / 64 samples
The filter value determines the dynamic behaviour of the display value. The larger
the
Filt
value, the more dampened the display response. With the adjustment of
the filter value " 1 " the filter is switched off, i.e. the display value is equal to the
unfiltered measured value.
The integrated overshoot detector reacts to a step change of approx. 6.25% of
the measurement range (full scale). During a detected measured value overshoot
of >6.25%, the instantaneous measured value is transferred directly to the display
without filtering.
11.6. Transient response (only for TDD-5… and TDD-7…)
Using the menu items
“dS1”, “dS2”, “dr1”
and
“dr2”
it is possible to set the
delay set and the delay reset.
The delay set causes delayed switching of the output if the switching threshold is
exceeded.
The delay reset causes a delayed resetting of the output if it drops below the
switching threshold – hysteresis.
The setting range for both parameters is 0.0 ... 99.5 seconds. The step rate is 0.5
seconds.
With these two functions it is also possible to suppress temporary disturbances.
