Inversion Of A Binary Input - ABB REM 543 Technical Reference Manual

ABB Network Partner
4.1.6.2.
REM 543 Protection,
Monitoring and Control
t
0
Input
Filtered Input
Filter Time
Fig. 4.1.6.1.-1. Filtering of a binary input.
In the figure above, the input signal is named 'Input', the filter timer is named 'Filter'
and the filtered input signal is named 'Filtered Input' . At the beginning the input signal
is at high state, the short low state is filtered and no input status change is detected. The
low state from the time t
the input status is detected and the time tag attached to the input change is t
state from t is detected and the time tag t
1
Each binary input has a filter time parameter Input # filter, where # is the number of the
binary input of the module in question (e.g. Input 1 filter).
Parameter Values
Input # filter 1....65535 ms

Inversion of a binary input

The status of a binary input can be inverted with the parameter Input # invert.:
Control voltage Input # invert.
No
Yes
No
Yes
When inverted, the status of the binary input is TRUE (1) when no control voltage is
applied to the terminals of the binary input. Accordingly, the input status is FALSE (0)
when a control voltage is applied to the terminals of the binary input.
Parameter Values
Input # invert. 0 (not inverted)
1 (inverted)
Technical Reference Manual
t
1
Filter Time
is longer than the filter time, which means that the change in
0
is attached.
1
Default
5 ms
Status of binary input
0 FALSE (0)
0 TRUE (1)
1 TRUE (1)
1 FALSE (0)
Default
0
Part 1, General
dipo
. The high
0
Page 31