4
The maximum current rating must not be exceeded.
Even if it is exceeded for a short time the unit is destroyed.
4 Switch point setting
Apply the operating voltage (+UB) to pin 2 for the specified time.
IN (Pin 2)
OUT = 1
OUT = 0
Time window
Duration [s]
Within the time windows A, B, C the output is switched depending on the flow:
output closed (OUT = 1) if flow ≥ SP / output open (OUT = 0) if flow < SP.
If the flow rises or falls within the time windows A, B, C, the switching status can
change.
In the time windows D, E, F the output is used for feedback signals (→ table
below). It does not react to flow changes.
Time
window
Operation
A
Inititalisation of the setting operation
B
Confirmation of the initialisation
C
Switch point setting*
Signal UB at pin 2 [s]:
10 15 20 ... 55 60
results in SP [cm/s]:
10 15 20 ... 55 60
D
Last switching status from C is maintained (= internal monitoring).
E
Output signal is inverted (confirmation of the setting);
duration = setting time of the selected switch point).
F
Output signal is inverted again (= internal monitoring).
After this SP
NEW
is active.
*Accuracy: ± 1s; factory setting: SP = 15cm/s
