Festo Генератор вакуума OVEM, дюймовый - Handbuch (Seite 69)

OVEM
Festo ć OVEM ć 1004b English 69
2.5 Switching points SP and hysteresis Hy
Threshold value comparator Window comparator
NO (normally−open)
P
1
0
Hy
OUT
SP
Hy Hy
P
1
0
OUT
SP min SP max
NC (normally−closed)
P
1
0
SP
Hy
OUT
P
1
0
OUT
SP min SP max
Hy Hy
Tab. 4: Setting switching points SP and hysteresis Hy
2.6 Diagnosis
In addition to its basic function as a pressure sensor, the vacuum generator also monitors further
system features. Evacuation times or the function of the solenoid valves belong here. These features
make it easier for the user to recognize and find faults at an early stage.
The diagnostic messages are shown on the display. In the case of variants with two switch outputs
(−2P,Ă−2N), the error message can also be shown at the switch output Out B.
Details on the diagnostic function è chapter 8.2 Diagnosis.