IDEC FL1E-H12RCA User Manual page 292

Applications
Components used
• K1
• K2
• S0 (normally closed contact) STOP pushbutton
• S1 (normally open contact)
• S2 (normally open contact)
• S3 (normally open contact)
• H1
• H2
Block diagram of the IDEC SmartRelay solution
The block diagram of the air-conditioning system with IDEC
SmartRelay :
On
Error
Off
Exhaust fan
Q1
Exhaust air
flow sensor
I3
Fresh-air fan
Fresh-air
flow sensor
I4
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I1
Q3
I2
x
x
T=
10 s
Q2
x
x
T= 10 s
contactor relay
contactor relay
START pushbutton
flow sensor
flow sensor
signal lamp
signal lamp
x
Exhaust fan
Q1
x
Exhaust air
I3
flow sensor
x
Off
I2
IDEC SmartRelay Manual
Q1
Exhaust 
fan
Q2
Fresh-air
fan
Q3
Error