Description Of The Switching Functions - turck PS400 Série Mode D'emploi

7 Description of the various switching functions
Hysteresis:
This function ensures a stable switching
status, independent of the system-
inherent pressure fluctuations and the
adjusted set point.
The switching range is defined by the
user via a switching point (SP) and a
release position (rSP).
Window:
With this function a range is determined
in which the switch assumes a defined
switching status.
The switching range is defined by the
user via an upper window limt (SP) and
a low window limit (rSP).
The minimum hysteresis between SP and rSP is approx. 0.5 % of the
nominal pressure range.
The minimum value of SP is1 % of the nominal pressure range.
If the applied pressure is above or below the defined limits, the display
starts flashing. If the applied pressure is outside the specified measuring
range, the display will indicate UL at the lower range limit and OL at the
upper range limit.
Hans Turck GmbH & Co.KG • D–45466 Mülheim an der Ruhr • www.turck.com
P
SP
rSP
1
0
1
0
P
SP
rSP
1
0
1
0
Hysterese
hysteresis
hystérésis
t
Hno
Hnc
Gutbereich
acceptable range
plage acceptable
t
Fno
Fnc
7
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