mcr 2404 control unit

mcr 0204 desmoking control unit is a control device for electric smoke exhausting system. mcr 204 unit is used for activating electric systems of MERCOR smoke exhausting system based on alarm signal from thermal or optical smoke sensors, and manual desmoking buttons (so-called manual call point buttons). The device is supplied with 230 V~ alternating current, the output operating voltage is 24 V-. The control unit includes batteries allowing for operation of the system for 72 hours from mains voltage failure - a single alarm opening of flaps or smoke windows is possible after that time.

PARAMETER VALUE
supply and basic voltage 230 V~, 50 Hz
rated power 100 VA
output voltage (actuators supply) 24 V-, max. 4 A
secondary supply 2 pcs. of 12 V, 2 Ah batteries, connected in series
operating temperature range -10oC  ÷ 55oC
maximum diameter of cords entering the unit 1,5 mm2
time of operation after mains failure in READY state min. 72 h
carrying capacity of relay outputs max. 100 mA, 24 V
casing protection grade IP 54
insulation grade II
dimensions (width x height x depth) 300 x 230 x 86 mm

 

The control unit allows for:

  • manual alarm triggering using alarm buttons,
  • automatic alarm triggering through smoke sensors,
  • feeding alarm information (signal through NO/NC contact),
  • feeding information on control unit failure (signal through NO/NC contact),
  • co-operation with mcr RPO-1 manual fire alarm button,
  • remote clearing of alarms and shutting of flaps,
  • monitoring readiness of all the connected smoke exhausting devices and indicating failures on a panel inside the control unit,
  • manual opening of flaps or smoke windows for building ventilation during normal use, without triggering alarm state,
  • automatic shutting of flaps opened for ventilation in case of rain fall or strong window, in response to a signal from weather control unit (does not impact alarm operation).