16
Model FL4000H
Table 3: LED sequence for each operating condition.
#
State
Red
Green
Notes
1
Power up
0.5 sec On
0.5 sec On
Alternating for 15 seconds
2
Ready
Off
5 sec On
0.5 sec Off
3 Warning
0.5 sec On
0.5 sec Off
Off
4
Alarm
0.2 sec On
0.2 sec Off
Off
5 COPM
Fault
Off
0.5 sec On
0.5 sec Off
6
Low Voltage, Code or
Data, Checksum Fault
Off
0.2 sec On
0.2 sec Off
7
Test Mode Activated
Off
0.9 sec On
0.1sec Off
8
Test Mode Warning
0.5 sec On
0.5 sec On
Alternating while detecting
Test Lamp
9
Test Mode Alarm
0.2 sec On
0.2 sec On
Alternating while detecting
Test Lamp
2.4.2 Continuous
Optical
Path
Monitoring - COPM Circuitry
A self-testing feature called Continuous Optical Path Monitoring (COPM) checks the optical path,
the detector(s), and the related electronic circuitry once every 2 minutes. If foreign material on the
front surface of the FL4000H blocks the COPM light from reaching the detector(s) for four minutes,
the unit will indicate FAULT. The optical FAULT outputs are a 2.0 mA (3.5 mA with HART and
small HART current disabled) signal, de-energizing of the FAULT relay, and Modbus (RS-485)
output signal. After a COPM FAULT, a COPM check is performed every twenty seconds. The
COPM will resume a once per 2-minute check only after the obstruction is removed.
CAUTION:
Dirty or partially blocked windows can significantly reduce the detector’s field of view
and detection distance.
NOTE:
Because the optical path is checked once every 2 minutes and requires two check failures
to produce a FAULT, it may take up to 4 minutes for the unit to detect an obstruction.
2.4.3 Test Mode Initiation
NOTE:
The FL4000H will not detect a flame while in Test Mode.
The FL4000H has the ability to initiate a special Test Mode, which enables the user to test the
response of the unit without the use of a flame source. Once the Test Mode has been activated,
the unit will not detect a flame, but rather, responds to GM’s Test Lamp as a simulated flame
source.
There are four options for enabling Test Mode on the FL4000H:
1. Flashing of the Test Lamp
2. Momentary grounding of test wire
3
3. Modbus
command
4. HART command (available in HART configuration only)
3
Underwriters’ Laboratories of Canada (ULC) does not sanction the grounding of test wire as an approach for enabling Test Mode. For ULC-
approved systems, only Test Lamp and HART and Modbus commands may be used.
Содержание FL4000H
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Страница 8: ...viii Model FL4000H Figure 2 Mounting Instruction Figure 3 Wall Mounting Assembly ...
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