Siemens Cerberus DOT1151A-Ex Technical Description

Cerberus® DOT1151AĆEx
Neural smoke detector, interactive,
intrinsically safe

Technical description

Fire & Security Products

Siemens Building Technologies Group

Data and design subject to change
without notice. / Supply subject to
availability.
E Copyright by
Siemens Building Technologies AG

Wir behalten uns alle Rechte an
diesem Dokument und an dem in ihm
dargestellten Gegenstand vor. Der
Empfänger anerkennt diese Rechte
und wird dieses Dokument nicht ohne
unsere vorgängige schriftliche
Ermächtigung ganz oder teilweise
Dritten zugänglich machen oder
ausserhalb des Zweckes verwenden,
zu dem es ihm übergeben worden ist.

We reserve all rights in this document
and in the subject thereof. By
acceptance of the document the
recipient acknowledges these rights
and undertakes not to publish the
document nor the subject thereof in
full or in part, nor to make them
available to any third party without our
prior express written authorization,
nor to use it for any purpose other
than for which it was delivered to him.

Nous nous réservons tous les droits
sur ce document, ainsi que sur l'objet
y figurant. La partie recevant ce
document reconnaît ces droits et elle
s'engage à ne pas le rendre
accessible à des tiers, même
partiellement, sans notre autorisation
écrite préalable et à ne pas
l'employer à des fins autres que
celles pour lesquelles il lui a été
remis.

Ci riserviamo ogni diritto relativo al
presente documento e sull'oggetto
illustrato in esso. La parte che riceve
il documento si impegna a non
renderlo accessibile a terzi, né per
intero né in parte, senza la nostra
previa autorizzazione scritta ed a non
usarlo per altri scopi di quello per il
quale è stato rilasciato.

1 Overview 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.1 Characteristics 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.2 Design 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2 Technical data 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.1 Algo-Parameter sets for DOT1151A-Ex 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3 Design 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4 Principle of operation (see block diagram Fig. 3) 7. . . . . . . . . . . . . . . . . . . .

5 Self-test / function state 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6 Emergency operation 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7 Response characteristics of the detector 9. . . . . . . . . . . . . . . . . . . . . . . . . . .

8 Environmental influences 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8.1 Influence of the ambient air temperature 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8.2 Other influencing variables 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9 Application 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9.1 Compatibility 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9.2 Adjustment functions / selection of parameter sets 10. . . . . . . . . . . . . . . . . . . . . .

9.3 Application 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9.4 Wiring 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10 Commissioning 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11 Maintenance 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11.1 Diagnostic possibilities 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11.2 Functional check / overhaul 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

12 Terms 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Fire & Security Products
Siemens Building Technologies Group

I

06.2001

II

Fire & Security Products
Siemens Building Technologies Group

06.2001

1 Overview

1.1 Characteristics

Dimensions

Ø 115

47...70

63

incl. base DB1151A

D For application in explosion-hazard areas of zones 1 and 2
D Homogenous response behavior across a wide application spectrum

through freely programmable percentages of smoke and heat

D Efficient signal processing algorithms with downloadable, application specific

characteristics

for optimum detection reliability

D High-quality sensor system with temperature compensation

functions reliably also under critical environmental conditions

D High contamination resistance

through appropriate design of the measurement chamber, the protective grille
and automatic, continuous digital compensation

D Comprehensive EMC concept based on the latest technology

allows installation also in difficult environments

D Integrated multiple coincidence circuit

suppresses extreme electrical and optical interference signals

D State-of-the-art, microprocessor-controlled electronics
D Transmission of 4 different danger levels and function states each
D Automatic, comprehensive self-test

Fire & Security Products
Siemens Building Technologies Group 06.2001

e1901a

1

1.2 Design

The PolyRex detector DOT1151A-Ex is installed in a modern, attractive, impact-resistant
plastic housing that fits unobtrusively into any room architecture. The detector is secured in
the DB1151A base with a vibration-proof bayonet fitting. Except for the identification mod­ule that defines the installation location at the time the system is commissioned, the base
does not contain any electronic components.
The detector is equipped with a response indicator (red LED) to indicate alarm. Activated
from the control unit, the response indicator can also be programmed to provide informa­tion for servicing purposes. Each detector is equipped with an output for connecting an ex­ternal response indicator. This indicator is normally assigned to the connected detector but
it can also be assigned programmatically to any detector within the same object.
The detector is fully electronic and has no wearing parts. As protection against environ­mental influences the electronic circuitry is shielded and the circuit board is coated with a
special protective varnish. For periodic factory overhaul the protective hood and grille can
be removed.
In explosion-hazard rooms the DB1151A detector base is mounted on the ceiling direct by
means of the recess box, or surface-mounted together with the DBZ1191 base attachment
and connected to the control unit with twin wire via a shunt Zener diode barrier and possibly
other devices. The base has spring terminals for connection.
Efficient installation, removal and testing of a detector is possible by means of the DZ1191
detector extractor and the RE6 testing unit. If an extension tube is used, work up to a ceiling
height of 7m can be performed without any further tools. A comprehensive range of base
accessories is available for special applications such as installation in humid environ­ments, protection against unauthorized removal, etc.

IMPORTANT!
The DZ1193 optoelectronic detector tester and exchanger and the RE6T heat
detector tester may not be used in explosion-hazard areas!

2

Fire & Security Products
Siemens Building Technologies Group 06.2001

e1901a