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21
Multisector-Control
To create a Multisector-Control up to four Extinguishing Control Computer 8010 (LMST) may be interconnected
by using the multisector interface (Part No. 788023). To realize a multisector control with up to 8 Extinguishing
Control Computer 8010 a pair of two multisector interfaces is cascadable for that purpose.
Installation information
•
The cable between the multisector interface and control valve is monitored for wire breakage. The
multisector interface must be installed in a close range (max. 2 m distance) to the corresponding valve.
•
The cable of the control valve must not be damaged by environmental effects and must be protected with
the supplied armoured metal tube.
•
In case of the final discharging voltage of the batteries a max. voltage of 21,2 V DC is available to supply
and activate the valves (refer to section "Emergency power supply"). The control valve must match this
application requirements.
•
Furthermore a voltage drop at the decoupling diodes and on the power cable (caused by the valve current)
must be considered.
•
An Extinguishing Computer 8010 is connected to the multisector interface via the appropriate monitored
relay output of the 8010.
Example:
Final discharging voltage of the 8010
Valve current load
Decoupling diodes
Silicon diodes
Total resistance of the cable
(Length approx. 50m, diameter 0,8 mm)
Max. available voltage for the control valve:
(21,2 V DC – 2 x 0,5 V DC – 0,7 V DC) – (4 Ohm x 750 mA) = 21,2 V DC – 1,7 V DC – 3 V = 16,5 V DC
The installed valve must be suitable for this voltage range (e.g. 16,5 V DC) and a proper valve
activation must be ensured.
FB 798352 / 11.07
Extinguishing Control Computer 8010 - Series 2
:
21,2 V DC
:
750mA
:
2 x 0,5 V DC
:
0,7 V DC
:
4 Ohm
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