Festo SOPA - Functional Principle

Threshold value comparator for distance monitoring (OutA and OutB)
Function NO (normally open) NC (normally closed)
In: Distance
Switching function:
– 1 switching point (SP)
TEACH mode:
– 1 teach-in point (TP = SP)
Tab. 5 Threshold value comparator with switching point (SP) and hysteresis (HY)
Window comparator for supply pressure monitoring (OutC)
Function NO (normally open) NC (normally closed)
In: supply pressure
Switching function:
– 2 switching points (SP
min
,
SP
max
)
– IO-Link:
– SP1 = SP
min
– SP2 = SP
max
no TEACH mode
Tab. 6 Window comparator with switching point (SP) and hysteresis (HY)
Hysteresis
Hysteresis serves to suppress switching signals in the event of fluctuations around the switching point
(both sides in this case). The reset points function as long as the value is within the hysteresis range.
– Upper reset point = switching point (SP) + hysteresis (HY)
– Lower reset point = switching point (SP) - hysteresis (HY)
1
Range in which switching signals are suppressed in
the event of fluctuations around the switching point
(SP)
2
Object
3
Sensing distance
4
Measuring nozzle
Fig. 5 Sensing range with switching points
5.2.3 Functional Principle
The system consists of two sub-components. The control module provides a compressed air prepara-
tion that is adapted to the supply pressure of the sensor module, as well as the functionality for
Product overview
14 Festo — SOPA — 2020-04