183
LOGO! Manual
A5E00067781 01
8.7.3 Rainwater Pump with LOGO! 230RC
L1N I1I2I3I4I5I6
Q1 Q2 Q3 Q4
SIEMENS
K1 Y1
Pump
S4S3
L1
N
S1 S2
p<
Mains water inlet
LOGO! 230RC
Apart from LOGO!, you only need the pressure switch and
the float switches to control the pump. If you are using a
3-phase AC motor, you must use a master contactor for
switching the pump. On systems using single-phase AC
pumps, you must fit a contactor if the AC pump requires a
higher current than can be switched by the output relay Q1.
The power of a solenoid valve is so low that it can normally
be controlled directly.
K1 Master contactor
Y1 Solenoid valve
S1
(NO contact)
Pressure switch
S2
(NO contact)
Float switch
S3
(NC contact)
Float switch
S4
(NC contact)
Float switch
Applications
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