IFM Electronic efector 500 PN7 Notice Utilisateurs page 16

Hysteresis:
The hysteresis keeps the switching
state of the output stable if the
system pressure varies about the
preset value. When the system
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 (Sx1) 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.
16
P
SP
rP
1
0
1
0
acceptable range
P
SP
rP
1
0
1
0
hysteresis
t
Hno
Hnc
t
Fno
Fnc