Smoke and Heat Detector MCD-573X

The multiple sensor detector MCD 573X is an individual addressable automatic fire detector for smoke and heat. The MCD573X meets the SecuiLine eXtended specification for operation on the ring circuit of the SecuriFire fire detection system. The multiple sensor detector MCD 573X is a combined smoke and heat detector. It detects smouldering and open fires in good time as it can both detect and evaluate the fire characteristic smoke as well as heat. The Tyndall (scattered light) principle is applied for smoke detection and the NTC sensor principle for heat detection. An appropriate signal is sent to the control panel, if the signal vales specified in the detector are exceeded. The MCD 573X is equipped with a short circuit isolator that is capable of isolating a short circuit in the installation. The MCD 573X can generate the following messages: • Fire alarm smoke or heat • Smoke pre-signal: PS1 at 30%, PS2 at 75% of alarm threshold • Soiling (smoke sensor): Level 1 and 2 • Temperature pre-signal • Revision alarm for smoke and heat • Fault messages: ageing, optical system error, supply voltage error, NTC short circuit and interruption, EEPROM memory error
  • Digital signal processing
  • Alarm threshold tracing
  • Temperature-supported smoke evaluation
  • Temperature-compensated smoke part
  • Signature alarm for smoke and heat
  • Multidimensional event memory
  • Smoke alarm filter to reduce the occurrence of false alarms
  • Downward compatibility with MCD573 and STD 531 detector
    series
  • Self-acting short circuit detection at start-up
    The MCD 573X can be programmed and set according to its field
    of application. The most important settings are:
  • Selecting the smoke responsiveness; at 80% (higher responsiveness), 100% (normal responsiveness) and 120% (lower responsiveness) of the alarm threshold
  • Selection of heat classes according to EN 54-5;
    Class A1, A2, B inclusive index R (for unheated rooms) and index S (for kitchens) for all 3 heat classes.
  • Activating/deactivating the fire characteristic smoke and/or heat
  • Combination of the fire characteristic smoke and heat
  • Alarm output for external alarm display, programmable as output independent of own alarm LED
  • Voltage alarm output 5V, 6.8V
  • Current limiting alarm output 0.1mA, 1mA, 5mA
  • Fault message “Over temperature”
  • Function up to a cable length of 3.5 km
    (at 25°C ambient temperature)
  • Blinking at function (activatable)

Functional principle: combined smoke/heat detector (Tyndall effect, NTC sensor
Monitoring area, mounting height: dependent on active detection principle (smoke or heat detector) 1)
permissible air speed: max. 20 m/s
Responsiveness smoke detector
Responsiveness acc. to EN 54-7: 100% Sensitivity
Responsiveness acc. to EN 54-7, not VdS approved: 80% Sensitivity
Responsiveness not acc. to EN 54-7: 120% Sensitivity
Responsiveness heat detector acc. to EN 54-5: Class A1 (Factory setting and after reset)
Class A2, Class B
Index S and R
Multiple sensor detector acc. to EN 54-29: Combination smoke and heat detector
Signal transmission: serial biphase data transmission, 2-wire-system
Operating voltage range (incl. modulation swing)
for SecuriLine operation: 11 to 31 V DC
for SecuriLine eXtended operation: 7 to 31 V DC
Current consumption: max. 0.15 mA
alarm-LED active additionally: max. 2.5 mA
alarm output active additionally: max. 7.5 mA
Alarm output 2) 3)
output voltages: +6.8V DC (-10%, +15%), +5.0V DC (+1V, -0.3V)
output current, current limited (short circuit proof)
nominal 0.1 mA: max. 0.7 mA
nominal 1.0 mA: max. 2.1 mA
nominal 5.0 mA: max. 7.5 mA
Protection system in connection with base USB 502: IP 44 4)
Approval by VdS G210152: according to CEA 4021 part B and C EN 54 part 7, 5, 17 and 29 5)
Declaration of performance: CPR-30-13-302-de-en
Ambient temperature range (continuous): -25 … +60 °C
Ambient conditions humidity: 10 … 95 % rel hum
(continuously, without condensation) at ≤ 34 °C
Ambient conditions humidity: max. 35 g/m³
(continuously, without condensation) at > 34 °C: min. 10% rel hum
Dimensions without base Ø x :  see dimensional drawing
Housing colour: white similar to RAL 9003
Housing material: ABS/PC
Weight: 125 g