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Les langues disponibles
Hysteresis:
The hysteresis keeps the switch-
ing state of the output stable if
the system pressure varies about
the preset value. When the sys-
tem pressure is rising, the output
switches when the switch-on
point has been reached (SPx);
when the system pressure is
falling again, the output switches
back when the switch-off point
(rPx) has been reached.
The hysteresis can be set: First the switch-on point is set, then the
switch-off point with the requested difference.
Window function:
The window function enables
the monitoring of a defined
acceptable range. When the sys-
tem pressure varies between the
switch-on point (SPx) and the
switch-off point (rPx), the output
is switched (window 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.
18
P
SP
rP
1
0
1
0
acceptable range
P
SP
rP
1
0
1
0
hysteresis
t
Hno
Hnc
t
Fno
Fnc
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