EIB Alarm Central Unit, surface-
mounted
75730010
Technical
Documentation
© Gebr.Berker 2005
Version: 18.08.2005
Page: 10 / 81
(Subject to prior change)
75730010.doc
Part 9
Remarks on the hardware
•
The maximum current of all devices connected to the alarm central unit must not exceed 1.8 A.
•
The alarm central unit has an overload or short-circuit detection circuit for the alarm indicator outputs. In case of
overload of an output, the electronic overload detection circuit will switch off all alarm indicator outputs (terminals:
Blitz (flashlight), Asir (outdoor siren), Isir (indoor siren) for about 1 second. In a subsequent test cycle, the alarm
central unit will identify the overloaded or short-circuited alarm indicators by priority-related adding of the outputs
(flashlight
outdoor siren
indoor siren) and will deactivate them permanently. If none of the outputs can be
clearly found overloaded during the test cycle there may possibly be some sum overload. In such case, the auto-
matic circuit will deactivate individual outputs by priority until no more overload is detected.
Deactivated outputs will only be enabled again when the bus voltage is applied and the alarm indicator outputs are
switched off by the alarm central unit in the 'usual' way, for example, after an alarm period has elapsed. If any out-
puts are overloaded again when the alarm indicators are switched on for the next time such outputs will be deacti-
vated again.
Overloaded outputs will cause an "alarm indicator overload" global alarm central unit fault.
•
The alarm central unit needs 230 VAC mains voltage for permanent operation. The line fuse protection of the EIB
alarm central unit should be implemented by a safety cut-out which has not been integrated in the residual current
circuit breaker system of your general interior wiring.
•
When programming the physical address (actuating the programming key), you should disconnect the device from
the 230 V mains to ensure protection against accidental contact.
•
Maximum protection against sabotage will be guaranteed if all wiring to the alarm central unit is installed in con-
cealed fashion. Through the installation opening at the rear side of the enclosure, you can lead the wiring into the
alarm central unit.
•
You can use the free wires of the EIB cable (yellow and white) to supply external components of the alarm system
(e. g. buzzer/LED of the key-operated switch, block connecting link, blocking element, etc.).
For the power supply of such external components, you can use the alarm central unit (terminal strip X3, "12V/0.1A"
and "GND") as source.
Note: Follow the EIB installation rules for the second wire pair. Do not use these EIB wires for any other application.
Observe the conditions for the installation of SELV.
•
The battery life is approx. 5 years at an ambient temperature of 20 °C. Exposing the battery to highe r temperatures
or completely discharging it several times will extremely shorten its life.
It is recommended to replace the emergency battery in intervals of some 4 years.
If the battery voltage drops below 11.0 V (ageing effects or battery defect) a fault will be indicated, and you must
replace the battery
(refer to "12. Battery Management", page 58)
.
•
The bus voltage and all detectors connected to the EIB will not be supplied by the emergency battery. Also to guar-
antee uninterrupted operation in that case you should use an EIB emergency power supply system.
