Det-Tronics X3302 - Detector Outputs and Indicators; Relay and mA Outputs; Status Indicators

95-876822.1
OUTPUTS
Relays
The standard detector is furnished with fire, fault
and auxiliary relays. All three relays are rated 5
amperes at 30 Vdc.
The Fire Alarm relay has redundant terminals
and normally open / normally closed contacts,
normally de-energized operation, and latching or
non-latching operation.
The Fault relay has redundant terminals and
normally open contacts, normally energized
operation, and latching or non-latching operation.
The Auxiliary relay has normally open / normally
closed contacts, and is configurable for energized
or de-energized operation, and latching or non-
latching operation.
0–20 mA Output
A 0–20 mA output is available as an option (in
addition to the three relays). This option provides
a 0–20 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 95-8613
for complete details.
NOTE
The output of the 0–20 mA current loop is
not monitored by the fault detection circuitry
of the X3302. 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.
NOTE
See "Detector Sensitivity Levels" for
additional information.
o
i
(OPTICAL INTEGRITY)
Automatic o
i
The X3302 includes the Automatic o
i
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. However, a
successful Automatic o
i
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
o
i
Fault
3 mA High Background IR Fault
4 mA Normal Operation
20 mA Fire Alarm
Table2—Detector Status Indicator
Detector Status LED Indicator
Power On/Normal Operation
(no fault or fire alarm)
Green
Fault Yellow
Fire (Alarm) Red
Low Sensitivity
One Yellow Flash
During Power-up
Medium Sensitivity
Two Yellow Flashes
During Power-up
High Sensitivity
Three Yellow Flashes
During Power-up
Very High Sensitivity
Four Yellow Flashes
During Power-up