IFM LR7000 - 14�2 Pumping Station; Empty the Tank with Overflow Protection

38
14.2 Pumping station / empty the tank with overflow protection
Switching output 1: control to empty tank
SP1 upper value exceeded → submersible pump ON
rP1 lower value reached → submersible pump OFF
OU1 hysteresis function, normally open (Hno)
Switching output 2: overflow protection
SP2 maximum value exceeded → alarm
rP2 slightly below SP2 (to suppress wave movements)
OU2 hysteresis function, normally closed (Hnc)
















 
XX�X = display value
A = emptying
B = overflow protection
• If SP1 is exceeded, output 1 switches (submersible pump ON)� If the level is
below rP1 again output 1 switches off (submersible pump OFF)�
• If SP2 is exceeded or if there is a wire break, output 2 switches off�