Output Control
6
Alarm output operation
The alarm output operates
according to the control
algorithm parameters.
The
sign in the upper left
display corner indicates
activated alarm output.
ON/OFF control algorithm
The static characteristic
of an alarm relay controlled
by an ON/OFF algorithm
is shown on the left drawing.
Input Filtration
Low-pass filter
This first-order filter acts
ONLY within a certain band
around filter output value.
This has been designed
to cut periodic noises
outside the communication
signal spectrum.
Filter operation is defined
by two parameters:
Filter Time
(defines filter time
constant) and
Filter Band
(defines filter active band
around filter output value).
If the newly measured value
differs from the filter output
by more than
Filter Band
,
the filter resets with a new
initial output value
(newly measured value).
