Service Water Pump System With Fl1E-H12Rcc - IDEC FL1E-H12RCA User Manual

8.7.3 Service water pump system with FL1E-
H12RCC
Apart from the IDEC SmartRelay, all you need is a pressure
switch and the float switches to control the pump. If you are
using a 3-phase AC motor, you must use a contactor relay to
switch the pump. For single-phase AC pump systems you
must provide a contactor relay if the power consumption of
the AC motor exceeds the capacity of the output relay Q1.
The power consumption of a solenoid valve is usually low
enough to allow direct controlling.
• K1
• Y1
• S1 (normally open contact)
• S2 (normally open contact)
• S3 (normally closed contact) float switch
• S4 (normally closed contact) float switch
IDEC SmartRelay Manual
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com
L1
S1
S2 S3
p<
L1 N I1 I2 I3
1 2 1 2
Q1 Q2
K1 Y1
N
Pump Drinking water supply line
S4
I4 I5 I6 I7 I8
1 2 1 2
Q3 Q4
contactor relay
solenoid valve
pressure switch
float switch
Applications
295