Hysteresis / Window Function - IFM Electronic LK7 Bedienungsanleitung

Technical information / Functioning / Parameters
Hysteresis
Window function
The hysteresis keeps the switch-
ing state of the output stable if
the level varies about the preset
value. When the level is rising,
the output switches when the
switch-on point
reached (SPx); when the level is
falling again, the output switches
back when the switch-off point
(rPx) has been reached.
The hysteresis can be adjusted:
First the switch-on point is set, then the switch-off point with the
requested difference.
The window function enables the
monitoring of a defined accept-
able range. When the level varies
between the switch-on point
(SPx) and the switch-off point
(rPx), the output is switched (win-
dow function/NO)
switched (window function/NC).
The width of the window can be
set by means of the difference
between SPx and rPx. SPx =
upper value, rPx = lower value.
P
SP
rP
has been
1
0
1
0
acceptable range
P
SP
rP
or not
1
0
1
0
hysteresis
t
N. O.
N. C.
t
N. O.
N. C.
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