95-8549
2
8.3
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 95-8638 for complete details.
NOTE
The output of the 0 to 20 mA current loop is not
monitored by the fault detection circuitry of the
X2200. 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 / Signalling 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 tricolor 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.
OPTICAL INTEGRITY (
oi
)
Automatic
oi
The X2200 includes the Automatic Optical Integrity
(
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.
The X2200 signals a fault condition when less than half
of the detection range remains. This is indicated by the
Fault relay 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
and
manual
oi
features that provide the same calibrated
test as the automatic
oi
, and in addition actuate the
Alarm relay to verify output 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.
Table 2—Detector Status Indicator
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
16 mA
Pre-Alarm
20 mA
Fire Alarm
Detector Status
LED Indicator
Power On/Normal Auto
oi
(no fault or fire alarm)
Green
Power On/Normal Man
oi
Green, flashing on for 0.5 sec.
every 5 sec.
Fault
Yellow
Pre-Alarm/Background UV
Red, flashing on for 500 ms.
and off for 500 ms.
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
