Burkert Type 8045 Instrukcja Użytkownika Pobierz pdf (Strona 45)

Operating and functions

Hysteresis switching

The output status changes when a threshold is reached:

• by increasing flow rate, the output status changes when the high threshold X+ is reached.

• by decreasing flow rate, the output status changes when the low threshold X- is reached.

OFF

Contact

X- X+

flow rate

Not inverted

Contact

X- X+

flow rate

Inverted

X- = low switching threshold of the transistor or the relay (1-, 2- or 3-)

X+ = high switching threshold of the transistor or the relay (1+, 2+ or 3+)

Window switching: the output status changes as soon as any threshold (X- or X+) is reached.

Contact

X- X+

flow rate

Not inverted

Contact

X- X+

flow rate

Inverted

X- = low switching threshold of the transistor or the relay (1-, 2- or 3-)

X+ = high switching threshold of the transistor or the relay (1+, 2+ or 3+)

Fig. 36: Window or hysteresis switching

2 s 2 s

2 s

OFF

Hysteresis switching

Window switching

Not inverted

Inverted

Not inverted

Inverted

Flow rate

High switching threshold

Low switching threshold

DEL= 0s

DEL= 2s

DEL= 0s

DEL= 2s

Fig. 37: Operation example of the transistor output with switching thresholds

English

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