Digital fire detection control panel
COMPACT LYON
FIRE PRETECTION MANUFACTURER 19
Ctra. de Molins de Rei a Rubí, Km. 8,4 - 08191 RUBÍ (Barcelona) ESPAÑA.
Tlf.: +34 935 862 690 - Fax:+34 936 999 261 - cofem@cofem.com - www.cofem.com
1.5.3.7- Master relay and technical signals module (MYOA)
Microprocessed analogue and addressable devices (with short-circuit
isolator) installed as another element inside the loop.
This module has one relay output fed by external 30 V and one technical
signal input to distinguish the open or closed state of a dry contact. The Module
is protected by 0.9 A resettable fuse and the relay by 0,5 A.
It is required auxiliary 30 V for feeding the equipments connected to the
relay output. The relay is configured with only one function (sounder, switched
or crossed relay), but also in its timing and in the combination of sensors that
activate it. The module monitors the presence of Voltage in the auxiliary supply
line of 30V and in the output of the monitored relay. The volatge ouput of the
realy is 30 V.
The technical signal input has a 10 K resistor connected in serie with
the dry contact. In quiescent condition, the contact has to be open, and in
anomaly condition, the contact has to be closed. In the input (marked with IN2),
the closed contact is detected as ALARM condition.
The MYOA supervises each external line (relay ouput and technical
signal input) through a 33 K each one, which allows indication of open or
closed electrical connection status.
The flashing of the transparent red LED indicates communication with the Control Panel. The
illuminated green LED indicates the actuation of the relay an alarm statu. Illumination of the green LED
indicates activation of the relay or closed dry contact. This module is electrical fed through the loop
connection.
The Realy and Technical signal Module is placed in a rectangular, heat-resistant ABS box.
The MYOA is conformant with EN 54-18 with the conformity mark awarded by AENOR.
The Realy and Technical signal Module is placed in a rectangular, heat-resistant ABS box.
Note: To determine the number of MYOA it can be installed, consult the devices limit per
control panel table (Chapter 1.5).
Figure 10. Connection schematic MYOA
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