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©Firefly AB (Oktober 2016)
Sensitivity Levels
— Model 660 (Table 1):
Switch positions 3 and 4 adjust the sensitivity
to four different levels . Level 1 being the most sensitive to UV radiation
and the most susceptible to false alarms . Level 2 is the factory setting
and is recommended for most applications . The following are the logic
levels for the two switch positions:
Table 1 – Model 660 Sensitivity Settings
Sensitivity Level
Position 3
Position 4
1 (Max)
Off
Off
2
Off
On
3
On
Off
4 (Min)
On
On
Detection Speed
— Model 660:
Switch position 5 is used to select two detection speeds .
The normal speed utilizes a slower sampling rate and automatic self-
test interval . The high-speed setting increases the data sampling rate
and auto self-test frequency . Toggling switch position 5 “ON” activates
the normal speed option . Toggling switch position 5 “OFF” activates
the high-speed option . The normal speed option is the factory setting
and recommended for most applications .
Industrial or Aircraft Hangar Applications
— Model 860:
Switch position 3 is used to select the application
setting . If the detector is to be installed in an industrial environment
(i .e ., fuel loading rack, compressor building, tank farm), switch position
3 should be “ON” . If the application is for an aircraft hangar, switch
position 3 should be “OFF” . The false alarm immunity will be slightly
diminished from that of the industrial setting .
Fire Event Analysis Level I or II
— Model 860:
Switch position 4 allows the detector to run the
Fire Event Analysis (FEA) program of your choice . FEA Level I is for
installations with normal UV background levels (i .e ., no welding) . FEA
Level II should be used where detectors are required to detect flames
while welding or other UV generating sources are present . Turning
switch 4 “ON” selects FEA Level I . Turning switch 4 “OFF” will provide
FEA Level II . Level II has slightly diminished false alarm immunity as
compared with Level I .
Relay Adjustments
— Models 660-0XXXX and 860-XXXXX and Model 660-1XXXX
There are two relays and Configuration Option Jumpers, JP1 and JP2,
located on the exposed surface of the printed circuit board (PCB) in the
housing assembly . Using these jumpers, the relays may be configured
as normally open or closed . The factory will ship the detectors with the
following settings .
1 .) Fire relay (K2) — normally open:
-will close when there is a fire present beyond the fire time delay
setting .
-will close when manual test is activated beyond the length of
time for the fire delay time setting .
Note:
The red, light emitting diode (LED), will be illuminated when
relay closes .
2 .) Fault relay (K1) - normally open:
- will close when power is applied (Model 860 after 2 seconds and
Model 660 less then a second) .
- will open when power is lost (or fuse F1 on process PCB is open) .
- will open when detector fails automatic test .
- will open when detector fails manual test .
- will open when SW7 is on and no loop is present .
Note:
The amber LED will be illuminated when relay opens, unless
there is a loss of power .
Note:
Any adjustments to the user options listed above should be
done with the power “OFF” . The detectors will not recognize any
changes until the microprocessor is reset . Removing the power allows
a reset to occur .
Caution:
Upon applying power, insure that the detector remains on for
at least 5 seconds to allow for complete initialization to take place .
Fire Outputs Latching or Non-Latching
— Models 660 and 860
, switch position 6 selects the latching or non-
latching Fire Outputs option . To select latching, the switch position 6
must be toggled “ON” . Upon detecting a fire, the Fire Outputs signal
will remain engaged as long as power remains “ON” or until the
detector is reset through the RS485 User Interface (UI) . If you select
non-latching by toggling switch position 6 to “OFF”, the Fire Outputs
signal will disengage after a fire is extinguished .
Optical Self-Test
— Models 660-XX1XX and 860-XX1XX:
These models have a “through-
the-lens” optical clarity-checking feature . The factory setting is for
automatic test only, switch position 1 is “OFF”, and switch position 2
is “ON” . (See Figure 5 and 6 for location of the switches and Figures
7, 8 and 9 that describe the switch settings for the user selectable
interface .) If the addition of the manual test feature is desired, then
toggle the switch position 1 to “ON” . If only the manual test feature is
needed, then toggle the switch position 1 “ON” and switch position 2
“OFF” . If no optical testing is preferred, then ensure that both of these
switches are “OFF” .
Models 660-XX0XX and 860-XX0XX
do not have either the manual or
the automatic test feature and do not test the lens for optical clarity .
Switch positions 1 and 2 are non-applicable (N/A) in these detectors .
0 to 20 mA Output
— Models 660-0XXXX and 860-XXXXX
switch position 7 selects the 0
to 20 mA output option . If this output is utilized, then switch position
7 must be “ON” . Otherwise, if this output is not used, switch position 7
must be kept “OFF” or it will cause the Fault Outputs to turn “ON” . Table
2 illustrates the order of priority . For the Model 660-0XXXX, priority 2
and 3 is N/A .
Table 2 – Milliamp Logic Chart
Priority
State
Load Current mA
1
Fire
20 ± 0 .2
2
Warning UV
16 ± 0 .2
3
Warning IR
15 ± 0 .2
4
Fire Relay Coil Fault
3 ± 0 .2
5
Calibration not complete
EEPROM Corrupted Fault
2 ± 0 .2
6
Self-Test Fault
1 ± 0 .2
7
Current Loop Fault
0 ± 0 .2
8
Normal
4 ± 0 .2
RS485 User Interface (UI)
The Series 660 and 860 Flame Detectors are equipped with a two
wire, half-duplex, serial communication interface, which is called the
“User Interface” (UI) . The RS485 UI will allow up to 31 detectors to
be networked to a controller (i .e ., customized fire panel or personal
computer) . The controller will perform the buss arbiter duties,
because the network is in half-duplex mode . This means that only one
transmitter is allowed on the network at one time .
DMLieferant
Тел
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