FIRECLASS Fire detection system Connect Supervised Inputs
Installation Guide Doc. version 2.0 23
10.3 Connect Supervised Inputs
The Supervised Input is active when the resistance
applied between the input + and - terminals goes low
(when a shorting switch closes for example). Resistors
are used to enable short and open circuit detection in
the switch wiring.
Only connect to the Supervised Input if it is set up in the
configuration (open the configuration in FireClass
Express for example).
Connect the switch using series and parallel resistors as
shown in Fig. 19. The resistors are supplied. The switch
must be externally sourced.
If you are not sure if the Supervised Input is used or not,
just connect the ‘end of line’ 10 kΩ resistor directly
across the terminals (this will prevent a fault condition).
Fig. 19: FC-FI - Inputs and Outputs. The labels are as printed on the PCB.
1 – ALARM relay. Shown in the "normal" position (no alarm).
2 – FAULT relay. Shown in the "normal" position (no fault).
3 – See Section “Connect Supervised Inputs” on page 23.
4 – See Section “Connect Local Sounders” on page 22.
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