3
95-8546
17.3
The detector 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 fire alarm output of the detector is activated.
On models with relay, 0–20 mA, or HART outputs, this
condition remains until the magnet is removed or the switch
is released, regardless of whether the detector has been
configured for latching or non-latching operation. The fire
alarm output condition stays active for three seconds on
Eagle Quantum Premier models.
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. In this case, the detector's optics should be
cleaned and the
oi
tests should be repeated. See the
"Cleaning Procedure" section of this manual for details.
NOTE
Refer to Appendix A for FM verification of the
oi
function.
COMMUNICATION
The detector 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. HART output
models do not support RS-485 Modbus protocol.
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, X5200G, and X5200M feature 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 detector
to the application.
IR DETECTOR OPTIONS
The IR detector in the X5200, X5200G, and X5200M 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 detector 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.
