IFM Electronic LK7 Bedienungsanleitung Seite 26

Applications
Pumping station
OFS
Page 26
Empty the tank with overflow protection
Switching output 1 (control to empty tank)
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)
L
SP2
rP2
SP1
rP1
OUT1
1
Hno
0
OUT2
1
Hnc
0
If SP1 is exceeded, output 1 switches (submersible pump ON). When
rP1 has been reached again the output switches back (submersible
pump OFF).
If SP2 is exceeded or if there is a wire break, output 2 switches off.
empty overflow protection
t