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16
Fire Door Closing (MDH)
Programmable outputs can be used for fire door closing. A special trigger condition is
available (Fire Door Closing.). Type of output is normally "Control, neutral".
One or more alarm points can control the output, i.e. the detectors on both sides of the fire
door as shown in the figure below.
Note: The alarm points and the output triggered by these alarm points must be connected
to the same CIE
In case of one of the following "events", the output will be activated, i.e. the fire door will
close:
Fire alarm (from any of the detectors controlling the fire door)
Fire alarm in "Test mode" (from any of the detectors controlling the fire door)
Fault (i.e. "no answer" from any of the detectors controlling the fire door
Disablement (any of the detectors controlling the fire door, the zone(s) involved or
the COM loop involved)
A definite time every day, if programmed via EBLWin. The output will be activated
for 20 seconds.
Via a programmable input (trigger condition "Door Closing Test Input"). The output
will be activated for 20 seconds.
The input has to be in / connected to the same CIE as the alarm points and their
"belonging" output.
Note: Zone line inputs (via 4580 or 3361) cannot be used for this type of Fire Door
Closing.
If a magnet contact is available, it is possible to get a "closed fire door verification" via the
Interlocking function. In this case, Type of output has to be "Interlocking output". See also
chapter "Interlocking function" page 96.
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E.g. if the detector is faulty, if there are two breaks or short-circuit on the COM loop.
118
If an I/O unit 3361 output is used, it is recommended, for safety reasons, not to connect it to the same COM loop as the
detectors controlling the fire door.
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Technical/Programming Manual
FT1020G3 Rev 2.2.1
117
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