The Auxiliary relay has normally open / normally
closed contacts, and is configurable for energized or
de-energized operation, and latching or non-latching
operation.
0 to 20 mA Output
A 0 to 20 mA output is available as an option (in addition
to the three relays). This option provides a 0 to 20 mA dc
current output for transmitting detector status information
to other devices. The circuit can be wired in either an
isolated or non-isolated configuration and can drive
a maximum loop resistance of 500 ohms from 18 to
19.9 Vdc and 600 ohms from 20 to 30 Vdc. Table 1
indicates the detector status conditions represented by
the various current levels. The output is calibrated at the
factory, with no need for field calibration. A model with
relays and 0-20 mA with HART is also available. Refer to
Addendum number 95-8636 for complete details.
NOTE
The output of the 0 to 20 mA current loop is not
monitored by the fault detection circuitry of the
X5200. Therefore, an open circuit on the loop will
not cause the fault relay to change state or the
detector status LED to indicate a fault. The status of
the LED always follows the status of the relays.
An alarm condition will normally over-ride a fault condition,
unless the nature of the fault condition impairs the ability
of the detector to generate or maintain an alarm output,
i.e. loss of operating power.
LON/SLC Output
The EQP model is designed for use exclusively with
the Det-Tronics Eagle Quantum Premier system. The
detector communicates with the system controller over
a digital communication network or LON/SLC (Local
Operating Network / Signaling Line Circuit). The LON/
SLC is a fault tolerant, two wire digital communication
network arranged in a loop configuration. Analog and
relay outputs are not available on this model.
LED
A tri-color LED on the detector faceplate indicates
normal condition and notifies personnel of fire alarm
or fault conditions. Table 2 indicates the condition of the
LED for each status.
Attention
The X5200 contains a source tube that is filled
with a gas mixture containing Krypton 85 (Kr85),
a radioactive material. Radioactive materials are
subject to regulation under U.S. and international
law.
oi (Optical Integrity)
Automatic oi
The X5200 includes the Automatic oi feature — a
calibrated performance test that is automatically
performed once per minute to verify complete detector
operation capabilities. No testing with an external test
lamp is required. The detector automatically performs
the same test that a maintenance person with a test
lamp would perform — once every minute, 60 times per
hour. However, a successful Automatic oi test does not
produce an alarm condition.
Table 1—Detector Status Conditions Indicated by Current Level
Current Level (±0.3 mA) Detector Status
0 mA Power Fault
1 mA General Fault
2 mA oi Fault
4 mA Normal Operation
8 mA IR Pre-Alarm only
12 mA UV Alarm only
14 mA IR Alarm only
16 mA Pre-Alarm
20 mA Fire Alarm
Table 2—Detector Status Indicator
Detector Status LED Indicator
Power On/Normal Auto oi
(no fault or fire alarm)
Green
Power On/Normal Man oi Green, flashing off for 0.5 sec.
every 5 sec.
Fault Yellow
UV Alarm only Red, flashing on for
0.5 sec. and off for 0.5 sec.
IR Alarm only Red, flashing on for
0.25 sec. and off for 0.25 sec.
Pre-Alarm Red, flashing on for
1 sec. and off for 1 sec.
Fire (Alarm) Steady Red
On Power-Up, The LED Flashes in Sequence as Follows,
Indicating Sensitivity and Signal Processing Status
Low UV Sensitivity
Medium UV Sensitivity
High UV Sensitivity
Very High UV Sensitivity
One Red Flash
Two Red Flashes
Three Red Flashes
Four Red Flashes
Stand. UV Signal Process.
Arc Rej. UV Signal Process.
One Yellow Flash
Two Yellow Flashes
Low IR Sensitivity
Medium IR Sensitivity
High IR Sensitivity
Very High IR Sensitivity
One Green Flash
Two Green Flashes
Three Green Flashes
Four Green Flashes
Quick Fire/TDSA IR Signal
TDSA only IR Signal
One Yellow Flash
Two Yellow Flashes
13.1 3 95-8546
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.
13.1 4 95-8546
Quick Fire (High Speed)
The Quick Fire (High Speed) feature can be used in
conjunction with the TDSA signal processing method.
This method overrides TDSA requirements in the event
of a sudden and intense signal, such as the result of a
flash fire. When Quick Fire is activated, the detector is
capable of responding to an intense fire signal in less
than 30 milliseconds (0.030 seconds). Using the Quick
Fire feature in conjunction with TDSA signal processing
allows the detector to provide a high speed response to
a large, non-flickering fire (such as in high pressure gas
applications). Additionally, when the Quick Fire feature
and TDSA signal processing are used in conjunction, the
detector maintains an ability to respond to fires that start
very small and grow in size and intensity over time.
UV Detector Options
The UV detector output (measured in counts per second)
is compared to the fire threshold (the “sensitivity”
setting). If the radiant energy level from the fire exceeds
the selected alarm threshold level, the fire alarm output is
activated. In every application, it is crucial to ensure that
the radiant ultraviolet energy level from the expected fire
at the required distance from the detector will exceed the
selected sensitivity level.
The UV detector in the X5200 can be programmed for:
––Arc Rejection
–– Standard Signal Processing
Arc Rejection
The Arc Rejection mode enables the detector to
prevent nuisance fire alarms caused by UV from shortduration
electrical arcs or electrostatic discharge, while
maintaining the ability to reliably detect the UV radiation
given off by a flame. Typical applications that benefit
from arc rejection logic include electrostatic coating
processes and uncontrolled environments where
transient UV sources can be present, such as many
typical outdoor applications. Most false alarm sources
have short transient UV signatures, while fire creates
a long UV signature over many seconds. Most fires
are detected in a few seconds (see response times in
Appendix A).
Standard Signal Processing
Standard signal processing is recommended for highspeed
suppression systems only. To allow for high-speed
operation, the standard processing mode does not
incorporate the arc rejection programming. This mode
should only be used in a controlled, indoor environment.
General Application
Information
Response Characteri stics
Response is dependent on the detector's sensitivity
setting, arc rejection, and time delay settings. Other
factors include distance, type of fuel, temperature of the
fuel, and time required for the fire to come to equilibrium.
As with all fire tests, results must be interpreted according
to an individual application.
See Appendix A for third-party approved fire test results.
Additional fire test results are available from Det-Tronics.
Welding
Electric arc welding is a source of intense ultraviolet
radiation. UV radiation from arc welding readily scatters
and can deflect across significant distances, even when
direct obstructions exist. Any open door or window can
allow nuisance UV radiation from arc welding to enter an
enclosed area, causing a possible response from the UV
detector.
It is recommended that the system be bypassed during
welding operations in situations where the possibility of a
false alarm cannot be tolerated. Gas welding mandates
system bypass, since the gas torch is an actual fire. Arc
welding rods can contain organic binder materials in
the flux that burn during the welding operation and are
detectable by the X5200. Welding rods with clay binders
do not burn and will not be detected by the X5200.
However, system bypass is always recommended, since
the material being welded may be contaminated with
organic substances (paint, oil, etc.) that will burn and
possibly cause the X5200 to alarm.
Artificial Lighting
The X5200 should not be located within 3 feet (0.9 m)
of artificial lights. Excess heating of the detector could
occur due to heat radiating from the lights.
EMI/RFI Interference
The X5200 is resistant to interference by EMI and RFI,
and is EMC Directive compliant and CE marked. It will
not respond to a 5 watt walkie-talkie at distances greater
than 1 foot (0.3 m).
Non-Carbon Fires
The response of the X5200 is limited to carbonaceous
fuels. It should not be used to detect fires from fuels
that do not contain carbon, such as hydrogen, sulfur and
burning metals.
13.1 5 95-8546
False Alarm Sources
UV: The UV sensor is solar blind to the ultraviolet
component of solar radiation. However, it may
respond to sources of UV besides fire, such as arc
flash, electric arc welding, grinding metal, lightning,
high voltage corona, x-rays, and gamma radiation.
NOTE
Radiation generated by false alarm sources such
as periodic lightning or sparks in the area may be
effectively ignored by the detector using the arc
rejection feature or time delay.
IR: The detector has been designed to ignore steady
state infrared