en
Use
To perform a manual BIT:
Momentarily connect terminal 3 with terminal 2 or switch across
these terminals in the safe area.
If the status LED flashes green at 1 Hz, the test was successful.
If the status LED flashes yellow at 4 Hz, the test was not
successful.
If the BIT was not successful, it is then automatically performed
every minute. This continues, until a successful BIT occurs and the
flame detector resumes normal operation. The fault indication
remains until power is disconnected from the flame detector. The
fault indication returns if the fault is still found when power is
restored.
Test using a flame simulator
The flame simulator can be used to simulate exposure of the flame
detector to a real fire condition. The flame detector is exposed to
radiation at the required detection level. As a result, the flame detector
will generate a fire alarm signal.
Flame detector
Dräger Flame 2000
Dräger Flame 2500/2570
Dräger Flame 2700
NOTICE
If the flame detector is exposed to a flame simulator, both alarm relay
and auxiliary relay and 0-20 mA output are activated during the
simulation.
► Disconnect automatic extinguishing systems or any external
devices that may be activated during the test so that no fire
extinguishing measures are initiated.
16
Corresponding flame simulator
Dräger FS 1300
Dräger FS 1100
Dräger FS 1400
To perform a test using the flame simulator:
1. Power up the system. Wait up to 60 seconds for the flame detector
to turn to normal state (status LED flashes green at 1 Hz).
2. Aim the flame simulator at the target point of the flame detector so
that the radiation emitted by the simulator is facing directly towards
the flame detector.
3. Press the button of the flame simulator once.
After a few seconds, a successful test shows the following results:
Component
Result
0-20 mA output
Turns to 20 mA for a few seconds and then
returns to 4 mA
Alarm relay
Activated for a few seconds and then returns
to Normal
Activated for a few seconds and then returns
1)
Auxiliary relay
to Normal
Fault relay
Remains active during the test
Status LED
Steadily lights red and then returns to normal
status (flashes green)
Turns to 5 Vdc for a few seconds and then
2)
Analog output
returns to 0 Vdc
1)
only available in wiring option 4 and 5
2)
only available for Dräger Flame 2570