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 has been
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) or not
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.
Hysteresis
Window function
Page 30
Technical information / Functioning / Parameters
Switch-off point:
Lower limit value at which the output changes its switching status.
rP1 ... rP4 are active only if binary mode is not active (
bin
=
OFF
)
Dependence between rPx and SPx:
1. rPx is always lower than SPx. The unit only accepts values which are lower than SPx..
2. If the difference between rPx and SPx is small (approx. 3 x steps), increasing the switch-on
point also increases the switch-off point (the difference SPx - rPx remains constant).
3. If the difference between rPx and SPx is great, rPx remains at the set value even if SPx is
increased.
4. If SPx is set to the minimum value and then increased, rPx is also set to the minimum
value and increased proportionally.
setting range
in steps of
inch
cm
0,5cm / 0,2inch
0,8 ... 7,8
2,0 ... 20,0
LK3022
0,5cm / 0,2inch
1,2 ... 16,0
3,5 ... 41,0
LK3023
1,0cm / 0,5inch
2,0 ... 23,5
5,0 ... 60,0
LK3024
Values for OFS = 0; with OFS > 0 the OFS value is added to these values.
t
P
SP
rP
1
0
1
0
t
P
SP
rP
1
0
1
0
Hno
hysteresis
Hnc
Fno
acceptable range
Fnc
