turck PS310 Series - Output Functions - Switching Output

V01.00 | 2020/01
11
4.5.5 Output functions – Switching output
A window function and a hysteresis function can be set for the switching outputs.
Window function
The window function is used to teach a switching range in which the switching output takes on
a defined switching state. The switching range is defined by an upper and lower limit value. The
minimum distance between the limit values is 0.5 % of the nominal pressure range. If the upper
limit value is changed, the lower limit value is automatically adjusted.
P
FH
1
FL
t
0
1
0
Fno
Fnc
Gutbereich
acceptable range
Fig.2: Behavior of the switching output (window function)
Hysteresis function
The hysteresis function ensures a stable switching state that is not affected by system-related
pressure fluctuations and the adjusted setpoint. The switching range is defined with a switch
point and a reset point. The minimum hysteresis is 0.5% of the nominal pressure range. If the
switch point is changed, the reset point is automatically adjusted.
P
SP
1
rSP
t
0
1
0
Hno
Hnc
Hysterese
hysteresis
Fig.3: Behavior of the switching output – Hysteresis function