Fire Sentry FS24X QuadBand Triple IR, Installation Manual And Operating Manual, Page: 17 / 28

Model FS24X
™
Fire and Flame Detectors
INSTALLATION GUIDE and OPERATING MANUAL
Fire Sentry Corporation Document No. 6178-001 - Rev. Q © Copyright 2011 All Rights Reserved
Page 14
3.3 LED Status Indicators
The Model FS24X
Detector uses three (3) separate, bright LED’s to indicate the Detector’s status.

The Blue LED blinks (flashes) once every ten (10) seconds to indicate a Normal, safe operational
condition (i.e. no Faults and no Alarms). The Blue LED is OFF when no external 24 VDC input power
is applied to the Detector.

The Red LED turns ON when a fire is Alarmed.

The Yellow LED blinks (flashes) when the window lens is dirty. For all other Fault conditions, the
Yellow LED will turn ON.
3.4 Normal Operation
In Normal operation, the bright Blue LED blinks (flashes) every 10 seconds. See Figure 3-4 for the location
of the Blue LED . Normal Operation is defined as the Detector with 24 VDC applied and no Alarm or Fault
conditions are present. If one of the 4-20 mA options are selected (Table 3-1), the current, sink or source, will
be 4.0 mA (±0.06 mA).
Figure 3-4
Blue LED Location
3.5 Alarm Condition
When an Alarm condition occurs, the Red LED will turn ON , (factory setting with the Auxiliary
relay set to “0”
seconds). See Figure 3-5 for the location of the Red LED .
The Detector has the following outputs
with
an
Alarm condition:

Alarm Relay activation

Auxiliary Relay activation
1

4-20 mA (sink 20 mA) Output
2

4-20 mA (source 20 mA) Output
2

RS-485 FireBus
II
Alarm
Notification
2

RS-485 ModBus Alarm Notification
2
1 This output is a Verified Alarm Output
2 Only one active Alarm output from this group
Figure 3-5
Red LED Location