Operating Instructions ACTIVE06/07 131
06/07 Operating Instructions ACTIVE 131
The default
Minimum Frequency 418 or Minimum Percentage 518 extends the pa-
rameterized tolerance band to the hysteresis.
pos. maximum value
neg. maximum value
(X1 / Y1)
+10V
(+20mA)
(X2 / Y2)
pos. minimum value
neg. minimum value
zero point
tolerance band
Tolerance band with set maximum frequency
For example, the output variable coming from positive input signals is kept on the
positive minimum value until the input signal becomes lower than the value for the
tolerance band in the negative direction. Then, the output variable follows the set
characteristic.
14.1.1.4 Filter Time Constant
The time constant of the filter for the analog reference value can be set via the pa-
rameter
Filter Time Constant 451.
The time constant indicates the time during which the input signal is averaged by
means of a low pass filter, e.g. in order to eliminate fault effects.
The setting range is between 0 ms and 5000 ms in 15 steps.
Filter Time Constant 451 Function
0 - Time Constant 0 ms
Filter deactivated – analog reference value is for-
warded unfiltered.
2 - Time Constant 2 ms
4 - Time Constant 4 ms
8 - Time Constant 8 ms
16 - Time Constant 16 ms
32 - Time Constant 32 ms
64 - Time Constant 64 ms
128 - Time Constant 128 ms
256 - Time Constant 256 ms
512 - Time Constant 512 ms
1000 - Time Constant 1000 ms
2000 - Time Constant 2000 ms
3000 - Time Constant 3000 ms
4000 - Time Constant 4000 ms
5000 - Time Constant 5000 ms
Filter activated – averaging of the input signal via
the set value of the filter time constants.
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