Det-Tronics X3302 Multispectrum IR Flame Detector with Pulse Output - Manual (Page 4)

95-8578 6.1 2
OUTpUTS
Relays
The detector is furnished with fire and fault relays. The
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.
Latching relays can be reset by removing input power
(0.1 second minimum).
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.
LED
A tri-color LED on the detector faceplate indicates
normal condition and notifies personnel of fire alarm
or fault conditions. Table 1 indicates the condition of the
LED for each status.
oi
(OpTICaL INTEgRITy)
automatic oi
The X3302 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. However, a
successful Automatic oi test does not produce an alarm
condition.
The X3302 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. The oi fault condition
is self-clearing if the optical contamination is temporary.
If the contamination is not automatically cleared and the
oi fault remains, the detector may require cleaning or
service. See the “Troubleshooting” section for further
information.
Magnetic oi / Manual oi
CaUtIon
These tests require disabling of all extinguishing
devices to avoid release resulting from a
successful test.
The detector also incorporates both Magnetic oi (Mag
oi ) and Manual oi (Man oi ) test capabilities. These
tests provide pulses (80 to 100 CPS) to the controller
(R7404 or R7494) when the detector is not in fault. If the
test is successful, the controller indicates a fire and the
appropriate zone output is active.
NOTE
If the detector is in a fault condition, a successful
Mag
oi or Man oi test cannot be performed.
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). This action causes the detector to
immediately send pulses to the controller. Controller
response is as follows:
• The Zone LED blinks.
• The digital display indicates which Zone is in alarm.
• The status indicator shows “6” (fire).
Important
Mag oi can be performed with the controller’s
(R7404/R7494) keylock switch in either the
NORMAl or TEsT position. In NORMAl, the
controller goes into alarm and activates its outputs.
If no controller alarm output is desired, place
the keylock switch in the TEsT position before
touching the magnet to the outside of the detector.
Man
oi operates only with the keylock switch in
the TEsT position.
Table 1—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