©
CIAS Elettronica S.r.l.
Ed.
2.0
Installation Manual
Pag. 37 of 46
Murena Plus 12, 24, Curtain
4.4 Connections to the Control panel
Connections to the control unit should be made using a screened cable.
The Murena Plus has three normally activated relays, each of which provides a normally
closed, voltage free contact. These relays will be de-activated and their contacts will open
for the following events:
Alarm
Tamper
Fault
There are also three inputs for activating the following functions:
Test
Stand-by
4.4.1 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 passes 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, the internal temperature is outside the limits of
30°C and +65°C, or or masking of the detector.
The Murena Plus can easily be connected to any conventional alarm control panel by using
either an on/off star connection or a balanced line
4.4.2 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.
4.4.3 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 Plus conducts a series of automatic functional self checks. If
the test is successful the alarm relay contact will open.
4.4.4 Sync Connections
Function is not active (do not use these input)
