CIAS Elettronica S.r.l.
Ed.
.2.4
Installation Manual
Pag. 28 of 36
Murena/Murena-Plus24
3.3.1 Alarm Contacts
The output contacts are static relays with a capacity of 100mA max.
NB:
The Alarm, Tamper and Fault contacts have a series resistance of 40 ohm when closed
(secure).
ALARM RELAY
The alarm relay de-activates and the contact opens each time movement is detected in the
detection field and the mass pa
sses the program level “man”, or masking of the detector.
TAMPER RELAY
The tamper relay de-activates and the contact opens when the housing is opened.
FAULT RELAY
The tamper relay de-activates and the contact opens when the power supply voltage is
outside the limits of +11.5Vdc and +14.8Vdc or the internal temperature is outside the limits
of 30°C and +65°C.
The Murena can easily be connected to any conventional alarm control panel by using
either an on/off star connection or a balanced line
3.3.2 Stand-by Connections
To activate the Stand-
by function it is necessary to connect terminal 7 “STBY” of MS1 to
GND.
N.B. Stand-by does not inhibit the normal operation of the detector.
It stops the
recording of events in the History and Monitor files.
3.3.3 Test Connections
To activate the Test function it is necessary to connect terminal 8 “TST” of MS1 to GND for
at least 10 sec. The Murena conducts a series of automatic functional self checks. If the test
is successful the alarm relay contact will open.
Summary of Contents for Murena
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