mcr OMEGA pro
Power and Control Panel
„MERCOR” S.A. –
The company reserves the right to modify and amend this document without notice.
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ACTUATORS WITH ELECTROMAGNETIC RELEASE UNITS
The mcr OMEGA pro can support actuators with
electromagnetic release units, e.g. type KW1, pulse or break
operated. If the actuators are of a different brand, the
damper/damper group limit switches shall be connected as
follows:
In the monitoring mode, the limit switch contacts are open,
and the MMS module input LEDs are green.
In the alarm mode, the limit switch contacts are closed, and
the MMS module input LEDs are red.
Top limit switch: auxiliary contact of the actuator,
acknowledges that the damper is in the monitoring
position.
Bottom limit switch: auxiliary contact of the actuator,
acknowledges that the damper is in the alarm position.
ACTUATORS WITH THERMAL TRIGGERS
If the actuator has a thermal trigger, e.g. RST, its damper is operated with a spring-loaded drive
and requires no power connection. It is then possible to monitor the damper positions with either one or
two limit switches. Here, the limit switches shall be connected as for the actuators with electromagnetic
release units. The closed damper limit switch (alarm position) shall be closed in the alarm position,
whereas the open damper limit switch (monitoring position) shall be open in the monitoring position.
CONNECTIONS OF FIRE ALARM SYSTEM SIGNALS
The mcr OMEGA pro requires connection with the fire alarm system
via dry NC contact relay (this contact status is in the monitoring mode). The
specified contact type shall be bridged with a 10 k
Ω programmable resistor to
assure line continuity monitoring. The programmable resistor connection shall
be at the termination of the monitored line. In the example shown in the
diagram to the right, the programmable resistor is inside the fire alarm system
control panel. Opening the fire alarm system contact will activate the alarm
input of the MMS module and run the preset fire algorithm.
CONNECTING A DUCT SMOKE DETECTOR
Duct smoke detectors sense smoke in fan ducts.
The mcr OMEGA pro provides power supply to
duct smoke detectors and monitors their status.
Fig. 22. Damper with EM wiring diagram.
Fig. 23. Duct smoke detector.
Fig. 24. FAS signal connection.
Cabinet
Damper with EM relase unit
T-box
Duct smoke sensor KCD1
FAULT
Alarm signal
