Det-Tronics X5200 UVIR Flame Detector - Manual (Page 5)

3 95-8546 13.1
The X5200 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. See the "Troubleshooting"
section for further information.
Magnetic oi
/ Manual
oi
The detector also incorporates both Magnetic oi
(Mag oi
) and Manual
oi
(Man
oi
) features that
provide the same calibrated test as the Automatic
oi , 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 oi test is performed by placing a magnet
at the location marked "MAG OI" on the outside of the
detector (see Figure 2). The Man oi test is accomplished
by connecting the oi 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
UV and IR emitters. If the resulting signal meets the test
criteria, indicating that greater than half of the detection
range remains, the Alarm output changes state, the
indicating LED changes to red, and the 0-20 mA current
output goes to 20 mA. 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.
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 oi or Man oi switch.
NOTE
Refer to Appendix A for FM verification of the
oi function.
COMMuNICATION
The X5200 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
The EQP model uses LON/SLC communication. RS-485
and HART communication are not available on the EQP
model.
DATA LOggINg
Data logging capability is also provided. Status
conditions such as normal, power down, general and
oi faults, pre-alarm, 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.
SIgNal PROCESSINg OPTIONS
The X5200 features signal processing options for both the
UV and IR sensor. These options determine the type of
logic that the detector will use for processing fire signals
to customize the X5200 to the application.
IR DETECTOR OpTIONs
The IR detector in the X5200 can be programmed for:
– TDSA enabled
– Both TDSA and Quick Fire enabled (either initiates
fire alarm)
Time Domain signal Analysis (TDsA)
The TDSA signal processing technique analyzes the
input signal in real time, requiring the IR signal to flicker
randomly in order to recognize it as a fire condition.
Using TDSA signal processing, the X5200 ignores
regularly chopped blackbody sources (occurring in areas
where moving conveyors and hot objects in proximity
to one another result in a regularly chopped IR signal),
because it looks for a less uniform signal. However, in the
presence of a regularly chopped signal, the detector is
more susceptible to false alarms due to sporadic IR that
functions as a trigger when occurring in conjunction with
the regularly chopped signal.