IFM Electronic LR7022 Bedienungsanleitung Und Sicherheitshinweise Seite 43

Applications
Pumping station
Empty the vessel with overflow protection
Switching output 1: control to empty vessel
upper value exceeded → submersible pump ON
lower value reached → submersible pump OFF
hysteresis function, normally open (Hno)
Switching output 2: overflow protection
maximum value exceeded → alarm
slightly below SP2 (to suppress wave movements)
hysteresis function, normally closed (Hnc)
OFS
display value
• If SP1 is exceeded, output 1 switches (submersible pump ON). When the
level is below rP1 again the output switches back (submersible pump OFF).
• If SP2 is exceeded or if there is a wire break, output 2 switches off.
empty
OUT1
Hno
OUT2
Hnc
overflow
protection
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