Siemens Cerberus DO1101A-Ex Parts list manual

Cerberus® DO1101AĆEx,
DT1101AĆEx, DT1102AĆEx
Wide spectrum smoke detector,
collective
Heat detectors, collective,
i tri sically safe
Tech ical descriptio
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
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06.2001
I
Fire & Security Products
Siemens Building Technologies Group
1 Brief overview 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1 Characteristics 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 Design 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Technical data 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Principle of operation 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 Environmental influences 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.1 Influence of the ambient temperature 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2 Other influencing variables 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 Application 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.1 Compatibility 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.2 Alignment functions 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.3 Application 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.4 Installation 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6 Commissioning 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7 Maintenance 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1 Functional check 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.2 Overhaul 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.3 On-site measurement with the DZ1194 detector test set 7. . . . . . . . . . . . . . . . .
8 Terms 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

II
Fire & Security Products
Siemens Building Technologies Group
06.2001

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Fire & Security Products
Siemens Building Technologies Group 06.2001
1 Brief overview
1.1 Characteristics
For applications in explosion-hazard areas of zones
1 and 2
Balanced response behavior and wide range of ap-
plications
High reliability and stability through new, high-quali-
ty optoelectronic sensor system and fully automatic
manufacturing and inspection processes
For applications in explosion-hazard areas of zones
1 and 2
Heat detectors to meet the highest requirements
DT1101-Exclass A1R heat detector with wide applica-
tion range (up to +50°C)
DT1102-Ex class BR heat detector for high ambient
temperatures (up to +70°C)
Response behaviour immune to deceptive phenom-
ena with rapid and slow increase in temperature
through:
Intelligently designed differential characteristics
Precise maximum temperature alarm activation with
quality thermosensor
High degree of reliability and long-term stability
High resistance to:
Electromagnetic interference (EMI) intelligently designed
circuit
Soiling, temperature fluctuations, humidity and corrosion
achieved through custom developed, protective circuit board
coating
Together with detection line coupler and shunt Zener barrier,
compatible with Cerberus control units with collective signal
evaluation
Manufactured in state-of-the-art SMD technology
Bayonet fitting for connection to base simplifies detector re-
placement
Comprehensive range of detector base accessories for spe-
cial applications
51
47...70
Ø 115
With base DB1101
Dimensions
54,5
47...70
Ø 115
With base DB1101
Dimensions
OptoRex DO1101-Ex ThermoRex DT1101-Ex / DT1102-Ex

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1.2 Design
OptoRex DO1101-Ex
The OptoRex DO1101-Ex is eminently suited to early
detection of smoldering fires, but it also quickly detects
flaming fires that produce smoke. The newly developed,
high-quality optoelectronic system ensures a homogenous
response behavior across a wide smoke spectrum, rang-
ing from light-colored to dark smoke.
The OptoRex DO1101-Ex conforms to EN 54-7 and is con-
sequently a universal smoke detector.
ThermoRex DT1101-Ex / DT1102-Ex
The DT1101-Ex/DT1102-Ex ThermoRex is suitable for the
monitoring of rooms in which upon an outbreak of fire, a
rapid rise in temperature is to be expected.
The DT1101-Ex ThermoRex complies with standard EN
54-5 and can be used for a wide range of applications. The
DT1102-Ex ThermoRex complies with standard EN 54-5
and is suitable for higher ambient temperatures.
The built-in response indicator (red LED) serves as a local status
indicator. An external response indicator can be connected to the
base.
For periodic factory cleaning the detector can be easily disas-
sembled.
The detectors are fully electronic and are not subject to wear and
tear. To protect it against environmental influences the electronic
circuit has a specially developed circuit board protective coating.
The DB1101 detector base is mounted on the ceiling direct on the
recess box direct, or surface-mounted using the DBZ1191 base at-
tachment and connected to the control unit via twin wire. The base is
fitted with spring terminals for connection.
The detectors are secured in the base DB1101 with a vibration-
proof bayonet fitting. Efficient installation and removal of a detector
is possible by means of the DZ1191 detector extractor. For testing of
the DO1101-Ex serves the RE6 testing unit. DT1101Ex and
DT1102-Ex can only be tested with RE6T in non-explosion hazard
areas. By means of extension tubes this work can be carried out up
to a height of 7 metres without additional tools.
A range of base accessories is available for installation in wet areas
and for protection against theft etc.

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2 Technical data
Normal ambient conditions, if nothing else is specified:
Temperature TaDO1101-Ex =20°C (293K) DT1101-Ex/DT1102-Ex =25°C (298K)
Air pressure p = 1’000hPa (750 Torr)
Parameters Symbol Unit DO1101-Ex DT1101-Ex DT1102-Ex Conditions
Operating voltage
(quiescent condition) UbVDC 17 24. . . . . . . 16 24. . . . . . . 16 24. . . . . . .
Max. permissible voltage Umax VDC max. 27 max. 27 max. 27
Starting current IeµAmax. 160 max. 100 max. 100 max. 25s after switch-on
Operating current
(quiescent condition) IbµAmax. 100 max. 100 max. 100 for DT1101-Ex Ta=25...50°C for DT1102-Ex Ta=25...70°C
Alarm voltage
at IA= 1 ... 10mA
at IA= 1...60mA UA UAV V5 10. . . . . . 5 12. . . . . . 5 10. . . . . . 5 12. . . . . . 5 10. . . . . . 5 12. . . . . .
Max. alarm current, pulsed IAmA max. 100 max. 100 max. 100 must be limited externally
f≥0.5Hz, Duty Cycle 50%
Reset voltage URV2 6. . . . . . . 2 6. . . . . . . 2 6. . . . . . .
Reset current IRµA20 500. . . . . 40 500. . . . . 40 500. . . . .
Reset time (UR= 2V) tRsmax. 2 max. 2 max. 2
Response integrating time tAstyp. 7 –– ––
Response sensitivity D1%/m typ. 3.0 –– –– smoke sensitivity with paraffin
test aerosol (1m/s)
Electrical sensitivity
signal voltage ∆U3A V1.2 2.8. . . . . . –– –– measurement with DZ1194
Ext. response indicator:
Voltage
Current
Flashing frequency
Uie
Iie V
mA
Hz
1.5 6. . . . .
max. 50
1
1.5 6. . . . .
max. 50
1
1.5 6. . . . .
max. 50
1f≥0.5Hz, Duty Cycle 50%
depending on line module
Capacitance detection line
AI line ≤1nF ≤33nF ≤1nF ≤33nF ≤1nF ≤33nF
Inductance detection line
AI line - ≤40µH- ≤40µH- ≤40µH
Response sensitivity
temperature increase
dT/dt = 10K/min.
EN 54-5 class A1R
max. release temperature
EN 54-5 class BR
max. release temperature
dT
Ta
Ta
°C
°C
°C
––
––
––
20 40. . . . . . .
54 62. . . . . . .
20 40. . . . . . .
74 85. . . . . . .
Electromagnetic compatibility V/m min. 50 min. 50 min. 50 1MHz ... 1GHz
Operatic compatibility Ta°C–25 +60. . . . –25 +50. . . . –25 +70. . . .
Humidity ≤34°C
>34°C≤95% rel. ≤35g/m3abs. ≤100% rel. ≤35g/m3abs. ≤100% rel. ≤35g/m3abs. transient condensation allowed
Storage temperature (continuous) Tl°C–30 +75. . . . –30 +75. . . . –30 +75. . . .
Protection category
EN60529/IEC529 IP44 IP44 IP44
Colour white
≈RAL9010 white ≈RAL9010 white ≈RAL9010
Standards
-for fire detectors EN54-7 EN54-5
class A1R EN54-5 class BR
–for explosion-hazard areas EN50014
EN50020 EN50014 EN50020 EN50014 EN50020
Application category IEC 721-3 3K6 3K8H 3K8H
Ex classification EEx ib IIC T4
(Ta≤60°C) EEx ia IIC T4 (Ta≤50°C *) EEx ia IIC T4 (Ta≤70°C *)
Ex approvals
–PTB Nr.
–ASEV Nr. Ex-96.D.2060
96.1.10358 Ex-95.D.2148 95.1.11013 Ex-95.D.2148 95.1.11013
Load factor KMK 1.6 1 1
* not Ex conditional (Alarm release DT1101-Ex 54°C
DT1102-Ex 74°C)
Intrinsic safety:
Intrinsic safety «i»when using a certified shunt Zener diode barrier with the following
data:
Riw280Ω
Uiv28V
Iiv100mA
Piv700mW

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3 Principle of operation
OptoRex DO1101-Ex
The OptoRex DO1101-Ex is based on the principle that
smoke scatters light. An infrared LED (IRED) transmits
brief, intensive light pulses into the scattering chamber.
The receiving element is screened off from direct IR light
incidence and reflections. Smoke entering the chamber
scatters the light so that some of it reaches the receiver
whose signal is evaluated by the electronics. After three
positively evaluated pulses an alarm is transmitted to the
control unit.
Time base 2in the integrated circuit 1controls the logic
unit 3and produces pulses for controlling the IRED light
source 5via the amplifier 4. If the detector is not contami-
nated and the air is clean, no signal is available at the re-
ceiver 6.
If the air contains smoke, the receiver sees a signal that is
transmitted via the amplifier 7to the discriminator 9. Inte-
grated in the amplifier is a multiple coincidence circuit that
generates the difference between a light and a dark mea-
surement which has the effect that no interference signals
and «only»smoke induced signals are amplified and trans-
mitted. In circuit 8a stable reference voltage Uaref is pro-
duced which in discriminator 9forms the alarm threshold.
The detector sensitivity is set with the trimming resistor 10 .
The signal voltage Usig at the output of the receiving ampli-
fier can only be factory-measured with the aid of special
measuring equipment. The alarm threshold Uaref is used
for measuring the alarm stroke ∆U3A on site with the detec-
tor measuring instrument DZ1194.
The logic unit 3evaluates the pulses of discriminator 9
and after the third pulse activates the alarm stage 11 inte-
grated in ASIC. Also activated in the event of an alarm are
the internal response indicator 12 and an external response
indicator 13 if available. The alarm stage 11 is self-holding
and is restored to the initial condition only when reset by the
system control unit (through brief interruption of the operat-
ing voltage). The intrinsically safe detector circuit is iso-
lated from the line circuit by protective diodes 14 .
ThermoRex DT1101-Ex / DT1102-Ex
The ThermoRex DT1101/DT1102 measures the ambient
temperature with the NTC thermistor Rmin the tip of the
sensor and measures the temperature in the detector
housing with the NTC thermistor Rg. Rapid temperature
changes bring about a faster change of resistance with
thermistor Rmthan with thermistor Rg. This causes a posi-
tive voltage shift at point P. As soon as this voltage exceeds
a fixed threshold value, the threshold value detector 3acti-
vates multivibrator 4and an alarm is given. If, due to a very
slow increase in temperature, the resistance values Rm
and Rgfall to the same extent, upon reaching a maximum
temperature determined by resistors 1and 2an alarm is
given. At the same time resistor 2accelerates response
for fast changes in temperature.
The weak current IBflows in non-alarm condition. As soon
as the multivibrator 4becomes conductive, the response
indicator alarm current IAflows. At the same time the re-
sponse indicator 6built into the detector is activated via
the driver stage 5. One external response indicator 7may
be connected. The multivibrator remains in self-hold condi-
tion until the control unit is reset by briefly interrupting the
operating voltage, whereupon it reverts to its original state.
The intrinsically safe detector circuit is isolated from the line
circuit by protective diodes 8.
Operating voltage
Shunt Zener
diode barrier
Detector Base
Shunt Zener
diode barrier
+
–
Detector Base
5 6
4
8
7 9 3
211
10
Uaref Usig
112 13
C
A
UB
E
F
D
B
∆U3A
ASIC
14
Operating voltage
1
+
–
6
5
3
2
C
A
UB
E
F
D
B
4
Rm
Rg
7
IA
IB
P
MB
8
Fig. 1 Block diagram DO1101-Ex Fig. 2 Block diagram DT1101-Ex/DT1102-Ex

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4 Environmental influences
4.1 Influence of the ambient temperature
OptoRex DO1101-Ex
[%/m]
1
Ambient temperature
0 102030405060–10
0
2
3
4
[°C]
ϑ
5
DO1101A-Ex
Fig. 3 Smoke sensitivity of the OptoRexDO1101-Ex as
a function of the ambient temperature
4.2 Other influencing variables
Ambient light, air drafts and fluctuations within the speci-
fied operating voltage range have no influence on the de-
tector.

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5 Application
5.1 Compatibility
Control units: Compatible with all Cerberus control
units with collective signal evaluation to-
gether with input/output module DC1192
and shunt Zener barrier
Bases: DB1101
5.2 Alignment functions
None.
5.3 Application
OptoRex DO1101-Ex
The OptoRex DO1101-Ex is suitable for applications in ex-
plosion-hazard areas of zones 1 and 2. Due to its EN 54
compliance, the OptoRex DO1101-Ex can be used as a
universal smoke detector.
ThermoRex DT1101-Ex / DT1102-Ex
The ThermoRex DT1101-Ex/DT1102-Ex is suitable for ap-
plications in explosion-hazard areas of zones 0, 1 and 2.
The ThermoRex DT1101-Ex can be used up to a tempera-
ture of 50°C and the DT1102-Ex up to a temperature of
70°C. The DT1101-Ex/DT1102-Ex are especially suitable
for monitoring rooms and installations in which in the event
of fire, a rapid increase in temperature is to be expected, or
where other types of detector cannot be used because work
processes cause smoke, dust, exhaust gases etc.
The recommended monitoring areas, distances between detectors
etc. can be found in the national guidelines, the Cerberus «Guide-
lines for Planning and Application» (CRP), «Fire Detection in Explo-
sion-hazard Areas», document e1204., or the «Security Guide».
5.4 Installation
Bases are connected together by twisted twin wire. Shielded cable
is only required for special applications, e.g. in the case of powerful
high frequency fields or special national guidelines.
For detailed information, see «Fire Detection in Explosion-hazard
Areas», document e1204. .
ExEx
SB3
Shunt Zener diode barrier Equipotential bonding
Detection line,
control unit sided
Supply 24VDC
Non-explosion-hazard area Explosion-hazard area
End-of-line device
Input/output
module DC1192
max. 15 DO1011-Ex
max. 25 DT1011/02Ex
EOL22(Ex)
Ex
Fig. 4 Connection diagram for DO1101-Ex and DT1101-Ex/DT1102-Ex

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6 Commissioning
To prevent unnecessary soiling during the construction phase,
the detectors should be inserted into the bases just before the
system is put into service.
For detailed information, see «Fire Detection in Explosion-hazard
Areas», document e1204. .
7 Maintenance
7.1 Functional check
A functional check of the detectors must be performed periodically
(usually once per year) by forcing each detector to respond by
means of a suitable testing device (RE6 or DZ1192 for DO1101-Ex
or RE6T for DT1101-Ex/DT1102-Ex). Detectors that do not respond
or which are mechanically damaged must be replaced.
7.2 Overhaul
All detectors should be jointly replaced and factory overhauled in in-
tervals of 2 to 8 years, depending on the environmental conditions
and the severity of contamination.
Important !
The DZ1193 and RE6T detector tester and the DZ1194 detector
test set must only be used in areas where there is no explosion-
hazard!
Electrostatic danger
The housing is made of plastic and has a surface resistance of
>1GigaΩwhich means there is a risk of electrostatic discharge.
Therefore the manual call point should not be located where there
is powerful ventilation. Cleaning with solvents is forbidden.
7.3 On-site measurement with the DZ1194 detector test set
OptoRex DO1101-Ex
The voltage ∆U3A can be measured and alarm activation
checked with the DZ1194 detector test set. The ∆U3A volt-
age measured is directly proportional to the remaining volt-
age increase for alarm.
ThermoRex DT1101-Ex / DT1102-Ex
The operating current can be measured and alarm activa-
tion checked with the DZ1194 detector test set.
Detectors with values which lie outside those in the technical data
must be replaced.
!
!

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8 Terms
ASIC Application Specific Integrated Circuit
CC11 Fire detection control unit AlgoControl
to fire detection system S11
CZ.. Fire detection control unit to fire detection system MS9
DB1101 Base for collective DS11 fire detectors
DBZ1191 Base attachment
DC1192 Input/output module
DO1101-Ex OptoRex smoke detector, for explosion-hazard areas
DT1101-Ex ThermoRex heat detector with static alarm threshold 60°C,
for explosion-hazard areas
DT1102-Ex ThermoRex heat detector with static alarm threshold 80°C,
for explosion-hazard areas
DZ1191 Detector exchanger
DZ1194 Detector test set
EMC Electro Magnetic Compatibility
EMI Electro Magnetic Influence
ESD Electro Static Discharge
IRED Infra-Red Emitting Diode
KMK Load factor for collective elements
NTC-Thermistor Negative Temperature Coefficient Thermistor
RE6 Detector tester
RE6T Detector tester for heat detectors
RgMeasuring sensor for housing temperature
RmMeasuring sensor for ambient temperature
RI (AI..) Response indicator
S11 Generic term of fire detection system S11
SB Shunt Zener diode barrier

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Document no.
Edition
e1485b
06.2001
Siemens Building Technologies AG
CHĆ8708 Männedorf
Alte Landstrasse 411
Tel.
Fax
www.cerberus.ch
+41 1 - 922 61 11
+41 1 - 922 64 50
Manual DS11
Section 6