95-876832.1
The X3302 signals a fault condition when less
than half of the detection range remains. This is
indicated by the Fault output and is evident by the
yellow color of the LED on the face of the detector.
The
o
i
fault condition is self-clearing if the optical
contamination is temporary. If the contamination is
not automatically cleared and the
o
i
fault remains,
the detector may require cleaning or service. See
the "Troubleshooting" section for further information.
Magnetic o
i
/ Manual o
i
The detector also incorporates both Magnetic
o
i
(Mag
o
i
) and Manual
o
i
(Man
o
i
) features that
provide the same calibrated test as the Automatic
o
i
, and in addition actuates the Alarm output
to verify operation for preventive maintenance
requirements. These features can be performed
at any time and eliminate the need for testing with
a non-calibrated external test lamp.
CAUTION
These tests require disabling of all
extinguishing devices to avoid release
resulting from a successful test.
The Mag
o
i
test is performed by placing a magnet
at the location marked "MAG OI" on the outside
of the detector (see Figure 2). The Man
o
i
test is
accomplished by connecting the
o
i
lead (terminal
22) to power supply minus via an external switch.
The magnet or switch must be held in place for a
minimum of 6 seconds to complete the test. Either
of these test methods activates the calibrated IR
emitters. If the resulting signal meets the test criteria,
indicating that greater than half of the detection
range remains, the fire alarm output of the detector
is activated. On all models other than the EQP, this
condition remains until the magnet is removed or the
switch is released, regardless of whether the relays
are set for latching or non-latching operation. On
model EQP, the condition remains for four seconds.
If less than half of the detection range remains,
no alarm is produced and a fault is generated.
The fault indication can be reset by momentarily
applying the Mag
o
i
or Man
o
i
switch. In this case,
the detector's optics should be cleaned and the
Oi test should be repeated. See the "Cleaning
Procedure" section of this manual for details.
NOTE
Refer to Appendix A for FM verication of
the
o
i
function.
COMMUNICATION
The X3302 is furnished with an RS-485 interface
for communicating status and other information
with external devices. The RS-485 supports
Modbus protocol, with the detector configured as
a slave device.
For HART communication, connect a HART communicator
across a 250 ohm resistor in the 0–20 mA loop.
NOTE
HART equipped X3302 are not available
with RS-485 communication.
DATA LOGGING
Data logging capability is also provided. Status
conditions such as normal, power down, general
and
o
i
faults, fire alarm, time and temperature are
recorded. Each event is time and date stamped,
along with the temperature and input voltage. Event
data is stored in non-volatile memory when the
event becomes active, and again when the status
changes. Data is accessible using the Inspector
Connector accessory, RS-485, or the EQP Controller.
INTEGRAL WIRING COMPARTMENT
All external wiring to the device is connected
within the integral junction box. The detector is
furnished with four conduit entries, with either 3/4
inch NPT or M25 threads.
DETECTOR SENSITIVITY LEVELS
There are four factory configured sensitivity levels
available for the X3302 Flame Detector:
Very High, High, Medium, and Low.
The following criteria should be considered when
choosing a sensitivity level for the intended application:
• Detector placement
• Speed of response based on fuel type and fire
size (see Appendix A for response times)
• Distance between the hazard and the flame
detector
Additional information on X3302 Flame Detector
performance results and sensitivities can be found in
Appendix A, the FM Approval and Performance Report.
SUSTAINED FIRE MODE
Sustained Fire Mode is an optional software
configuration that provides an increased verification
time to a sustained fire. The algorithm has been
optimized to provide a longer processing time to
fires while maintaining detection range. Consult the
factory with any questions on how to choose the
optimum sensitivity level for the intended application.
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