Bürkert 8012 Series, Руководство по эксплуатации, Страница: 36 / 136

36
Adjustmentandfunctions
Type 8012
9.2.2. switching function
The pulse output of the 8012 can be parametered to switch a solenoid
valve or activate an alarm.
The following parameters can be preset:
• hysteresis or window operating, inverted or not
• the switching thresholds, low and high
• immediate or delayed switching
hysteresis operating
The output status changes when a threshold is reached:
• by increasing flow rate, the output status changes when the high
threshold is reached.
• by decreasing flow rate, the output status changes when the low
threshold is reached.
The behaviour of the output depends on the output wiring, NPN or
PNP.
Not inverted
Contact
Low
threshold
High
threshold
ON
OFF
Inverted
Contact
Low
threshold
High
threshold
ON
OFF
Fig. 18 : NPN pulse output, hysteresis operating, non inverted and
inverted
Not inverted Contact
Low
threshold
High
threshold
ON
OFF
Inverted Contact
Low
threshold
High
threshold
ON
OFF
Fig. 19 : PNP pulse output, hysteresis operating, non inverted and
inverted
Window operating
The output status changes when either threshold is reached. The
behaviour of the output depends on the output wiring, NPN or PNP.
Not inverted
Contact
Low
threshold
High
threshold
ON
OFF
Inverted Contact
Low
threshold
High
threshold
ON
OFF
Fig. 20 : NPN pulse output, window operating, non inverted and
inverted
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