Cerberus™ PRO / Cerberus™ FIT Automatic fire detectors OOH740, OOHC740 ASAtechnology™.
Properties Design ● Resistant to environmental and interfering influences such as dust, fibers, insects, moisture, extreme temperatures, electromagnetic interference, corrosive vapors, vibration, artificial aerosols, and atypical fire phenomena Features ● Shock resistant, protection against sabotage ● Signal processing with ASAtechnology (Advanced Signal Analysis) ● Time and process-dependent detection behavior ● High degree of immunity to faults in power electronics ● Protected electronics, high-quality co
Use OOH740 multi-sensor fire detector, neural ASA Multi-sensor fire detector consisting of: ● Point detector ● Detector dust cap to protect the point detector during the construction phase Function: ● Functions according to the scattered light principle with two sensors, optical forward and backward scattering ● Opto-electronic measuring chamber that obstructs disruptive extraneous light but provides excellent detection of both light and dark smoke particles ● Two additional heat sensors increase the point
Detector base DB721 Function: ● Universal base for all point detectors of the Cerberus™ PRO FD720 series Use: ● For recess-mounted supply lines ● For surface-mounted supply lines with cables up to max. Ø 8 mm The detector base DB721 has a loop contact. When using the DB721, the detector line is also not interrupted when there is no point detector mounted in the detector base.
Intended use The automatic fire detectors OOH740 and OOHC740 may only be used on a C-NET detector line in a fire detection system FS720 or FC360. The automatic fire detector OOH740 may also be used on a collective detector line or a conventional detector line.
Type Overview Type Designation Order number Weight [kg] OOH740 Multi-sensor fire detector, ASA S54320-F7-A3 0.124 OOHC740 Fire and CO detector, ASA S54320-F8-A3 0.128 DB721 Detector base with loop contact S54319-F11-A1 0.052 DB721D Detector base with loop contact S54319-F15-A1 0.054 DB722 Detector base S54319-F19-A1 0.052 DB110 Detector base (collective) S54372-F5-A1 0.052 DBS720 Sounder base S54319-F5-A1 0.090 BA720 Base attachment S54319-F20-A1 0.
Protective cage DBZ1194 ● ● To protect the point detector from damage Can only be mounted in combination with base attachment wet BA721 Detector heating unit FDBH291 ● ● ● ● For operating point detectors in critical ambient conditions during icy conditions or when there is a danger of moisture condensation. Examples of application: Cold stores, attics, loading ramps, cheese cellars Optimum function is only guaranteed in conjunction with base attachment wet BA721.
Detector locking device LP720 ● ● ● For protection against theft of the point detector Set screw M3 x 12 mm prevents the point detector being unscrewed from the detector base Point detector can only be removed with the appropriate Allen key Parameter set resistor 33k PSR720-1 Function: ● Prefabricated resistor with flat plugs for use in DB110 and DB721D. Brings the OOH740 in parameter set 1. Parameter set resistor 68k PSR720-2 Function: ● Prefabricated resistor with flat plugs for use in DB110 and DB721D.
Product documentation Document ID Title 008115 Installation Detector heating FDBH291 A6V10200373 Installation Detector base with loop contact DB721, DB722, detector base DB720, sounder base DBS720, detector base seal RS720, detector locking device LP720, base attachment BA720 A6V10203222 Data Sheet Testequipment and accessories FDUL221, DX791, RE6, RE7T, RE8ST, RE8STCO, FDUM29x, LE3, StabexHF A6V10218037 Technical Manual Sounder base DBS720 A6V10229261 List of compatibility (for 'Cerberus™ PRO' p
3 2 1 4 1 6 7 5 3 1 Detector base 5 Mounting slits 2 Auxiliary terminals DBZ1190‑AA, DBZ1190‑AB 6 Point detector 3 Screw terminals for detector line and external alarm indicator 7 Internal alarm indicator 4 Opening for cable entry Disposal The device is considered an electronic device for disposal in accordance with European Directive and may not be disposed of as domestic waste. ● Use only designated channels for disposing the devices.
Technical data OOH740 OOHC740 Operating voltage (modulated) DC 12...33 V DC 12...33 V Operating current (quiescent) ~170...250 µA ~300...380 µA Max. number of external alarm indicators that can be connected 2 2 Operating temperature -25...+55 °C -10...+50 °C Storage temperature -30...+70 °C -20...+55 °C ≤95 % rel. ≤95 % rel. C-NET, collective or conventional C-NET ~RAL 9010 pure white ~RAL 9010 pure white 0.100 kg 0.
Issued by Siemens Switzerland Ltd Smart Infrastructure Global Headquarters Theilerstrasse 1a CH-6300 Zug +41 58 724 2424 www.siemens.com/buildingtechnologies Document ID A6V10284161_v_en_-- Edition 2021-12-17 © Siemens Switzerland Ltd, 2011 Technical specifications and availability subject to change without notice.
