Binary Input; Binary Input Filter Time - ABB Relion SMU615 Technical Manual

Section 3
Basic functions
3.8
3.8.1
54

Binary input

Binary input filter time

The filter time eliminates debounces and short disturbances on a binary input. The
filter time is set for each binary input of the merging unit.
1
3
4
GUID-13DA5833-D263-4E23-B666-CF38B1011A4B V1 EN
Figure 21: Binary input filtering
1 t
0
2 t
1
3 Input signal
4 Filtered input signal
5 Filter time
At the beginning, the input signal is at the high state, the short low state is filtered and
no input state change is detected. The low state starting from the time t
filter time, which means that the change in the input state is detected and the time tag
attached to the input change is t
time tag t is attached.
1
Each binary input has a filter time parameter "Input # filter", where # is the number of
the binary input of the module in question (for example "Input 1 filter").
Table 37: Input filter parameter values
Parameter
Input # filter time
2
5 5
. The high state starting from t
0
Values
5...1000 ms
1MRS758407 B
exceeds the
0
is detected and the
1
Default
5 ms
SMU615
Technical Manual