IDEC SmartRelay FL1D Series - Service Water Pump System with FL1 D-H12 RCC

Applications
289
IDEC SmartRelay Manual
8.7.3 Service water pump system with FL1D-
H12RCC
L1 N I4 I5 I6 I7 I8
Q1 Q2 Q3 Q4
K1 Y1
S4S3
L1
N
S1
S2
p<
I1 I2 I3
1 2 1 2 1 2 1 2
Drinking water supply linePump
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 contactor relay
• Y1 solenoid valve
•S1 (normally open contact) pressure switch
•S2 (normally open contact) float switch
•S3 (normally closed contact) float switch
•S4 (normally closed contact) float switch
Courtesy of Steven Engineering, Inc. ● 230 Ryan Way, South San Francisco, CA 94080-6370 ● General Inquiries: (800) 670-4183 ● www.stevenengineering.com