6
4.2 Pressure monitoring / switching function
OUT1 changes its switching state if it is above or below the set switching limits
(SP1, rP1)� The following switching functions can be selected:
•
Hysteresis function / normally open: [OU1] = [Hno] (→ fig. 1).
•
Hysteresis function / normally closed: [OU1] = [Hnc] (→ fig. 1).
First the set point (SP1) is set, then the reset point (rP1) with the requested
difference�
•
Window function / normally open: [OU1] = [Fno] (→ fig. 2).
•
Window function / normally closed: [OU1] = [Fnc] (→ fig. 2).
The width of the window can be set by means of the difference between SP1
and rP1� SP1 = upper value, rP1 = lower value�
1
2
P = system pressure; HY = hysteresis; FE = window
