Applications
IDEC SmartRelay Manual 279
8.3.2 Advantages of using IDEC SmartRelay
The IDEC SmartRelay solution requires less switchgear.
That saves you installation time and space in the control
cabinet. You might even be able to use a smaller switching
cabinet.
Additional IDEC SmartRelay options
• The free output (Q4) can be used as isolated signal
co
ntact for re
porting faults or power failure.
• It is possible to switch off of the fans by means of a
sequential circuit.
These fu
nctions can be implemented without a
dditional
switchgear.
Block diagram of the extended IDEC SmartRelay solution
The fans at Q1 and Q2 are switched on and off by means of
the following circuit:
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