Deckma 20140208BA, Operating Instructions Manual

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Technical documentation 20140208BA AFMS3000
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Operating instructions
Version 1.0 2018/03/17 page 6 of 24
In this case again, the currently valid regulations about the maximum permissible number of fire
detectors in a loop are to be observed, too!
In normal operation, a minimum (closed-) current flows through each loop. In order that this is
possible, the last detector in a loop is equipped with an EOL termination resistor (3k Ohm). In case of
a fault (e.g. through the removal of a detector or a broken wire), no more current flows through the
loop. The (FM) fire loop module monitors this current and informs the main module in case of a fault.
The main module reacts to this incident according to its configuration.
In case of a fire alarm, a resistor (in the range from 390 to 560 Ohm) is switched on the loop by the
relevant detector. The increased current is detected by the (FM) fire loop module and the main module
is informed about a fire in the relevant loop.
The (FM) fire loop module monitors all the loops for a possible short circuit. In case of a short circuit,
the relevant loop is switched off and the fault is reported to the main module. The maximum loop
current in a loop is around 400mA. The sum of all loop currents (after activation of several loops) must
not exceed 1.6A. Is the total current exceeded, the microcontroller switches off the loop with the
highest current.
The module, in addition to the connections for the fire detectors, also contains 8 potential-free outputs,
which can be configured as required for fault or fire. Two microcontrollers control and monitor the
loops, their outputs and communicate with the BUS.
1.9. Printer module DM01-E
The printer module is used as an interface card to the connection of a "Centronics" (or similar),
compatible printer. All messages (fault or fire alarms), as they are shown in the display of the main
panel too, are automatically sent to this printer, but with much reduced information (see sample
printouts underneath). The module receives the data from the BUS master.
Example of printout:
Date
Time Information
30.12.06 15:33:02 AN loop 13
30.12.06 15:34:12 AR loop 13
1.10. VDR module VM01-E
The VDR module sends data, which it filters from the BUS, through its own RS485 or RS232 interface
to an “externally connected” VDR (Voyage Data Recorder). The communications profile of the VDR
interface is according to the specifications:
IEC 61162-1 Part 1 Single talker and multiple listeners
IEC 61162-100 Extra requirements for the UAIS
IEC 61162-102 Extra requirements for the Voyage Data Recorder
Example:
$--FIR,E,083945.00,FD,11,005,000,A,V,AN loop 5 *08 - fire alarm in loop 5 ,FM01
$--FIR,E,084030.00,FD,11,005,000,A,A,AA loop 5 *1C - fire has been accepted
$--FIR,E,084035.00,FD,11,005,000,A,A,AR loop 5 *0A - fire has been reset
$--ALA,084225.00,FR,OT,11,910,H,V,FN loop 16 *56 - fault with cable breakage
(open loop)