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Applications
8-17
IDEC SmartRelay User’s Manual
Functional block diagram of the enhanced IDEC SmartRelay
solution
The fans at Q1 and Q2 are switched on and off as shown
in the following circuit:
x
T=
10s
T=
30s
Q1
Exhaust
fan
Q2
Fresh-air
fan
On
I2
Off
Fault Q3
x
x
I3
Exhaust air flow
sensor
I2
Off
Fault
T=
10 s
T=
10s
x
x
x
I3
Exhaust air
flow sensor
I4
Fresh-air flow
sensor
Q1 exhaust fan
Q2 exhaust fan
Q3
I1
You can also generate a message via output Q4:
The relay contacts of output Q4
are always closed when
the system is running. Relay Q4 does not release unless
there is a power failure or a fault in the system. This
contact can be used for teleindication, for example.
Q3
Fault
Q4
Message
Summary of Contents for SmartRelay FL1A-H12RCE
Page 1: ...IDEC SmartRelay Manual March 2001 www idec com ...
Page 16: ...Getting to Know IDEC SmartRelay 1 6 IDEC SmartRelay User s Manual ...
Page 32: ...Installing and Wiring IDEC SmartRelay 2 16 IDEC SmartRelay User s Manual ...
Page 132: ...IDEC SmartRelay Functions 4 64 IDEC SmartRelay User s Manual ...
Page 184: ...Applications 8 32 IDEC SmartRelay User s Manual ...
Page 204: ...IDEC SmartRelay Menu Structure E 2 IDEC SmartRelay User s Manual ...
Page 206: ...Type Numbers F 2 IDEC SmartRelay User s Manual ...
Page 208: ...Abbreviations G 2 IDEC SmartRelay User s Manual ...