Bosch NOM 100 LSN User manual

PRODUCT INFORMATION PI−34.62c
Page 1
BDL−F.01U.002.709
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Optical smoke detector
NOM 100 LSN/NOM K 100 LSN
NOM 100 LSN NOM K100 LSN

PI −34.62cProduct Information Optical Smoke Detector NOM/NOM K 100 LSN
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Table of Contents
1. Product Description 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1. Block Diagram 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2. Features 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3. Planning Notes 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1. Recommended Use 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4. Scope of Order 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.1. Detector Models 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2. Detector Base 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.3. Accessories 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5. Device Design 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.1. Dimensions – Detector Module 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6. Functional Description 10. . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.1. Smoke Measurement 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.2. Contamination Measurement 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.3. Monitoring Stages 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.4. Alarm Triggering 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.4.1. Alarm Triggering with Slightly Contaminated Detectors 16. . . . . . . . . . . . . . . . . . .
6.5. Detector Fault 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.5.1. Detector Exchange Required/Detectors Highly Contaminated 17. . . . . . . . . . . . .
6.5.2. Detector Not Sensitive Enough 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.6. Planning Monitoring/Change in Functionality 19. . . . . . . . . . . . . . . . . . . .
6.6.1. Planning Monitoring 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.6.2. Change in Functionality 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.7. Sectional View of Upper Section of Detector 21. . . . . . . . . . . . . . . . . . . .
7. Technical Data 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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8. Assembly Drawings for Detector Bases 22. . . . . . . . . . . . .
8.1. Standard Detector Bases NMS 100, NMS 100 V 22. . . . . . . . . . . . . . . .
8.2. Damp Room Detector Bases NMS F 100, NMS F 100 V 22. . . . . . . . . .
8.3. Cavity Detector Bases NMS H 100, NMS H 100V 23. . . . . . . . . . . . . . .
8.4. Ventilation Duct Detector Base NMS K 100 24. . . . . . . . . . . . . . . . . . . . .
8.5. Mounting Tips for Detector Bases 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.6. Connection Diagram 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.6.1. Detector Base NMS 100 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9. Tips on Maintenance and Service 26. . . . . . . . . . . . . . . . . .
9.1. Repair 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.2. Disposal 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.3. Additional Documentation 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.4. Service Accessories 27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10. Table of Abbreviations 28. . . . . . . . . . . . . . . . . . . . . . . . . . . .
11. Notes 29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PI −34.62cProduct Information Optical Smoke Detector NOM/NOM K 100 LSN
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1. Product Description
Optical smoke detectors NOM 100/NOM K 100 work using a scattered light proce-
dure and are suitable for use in all cases where smoke is likely to form in the event
of a fire.
The detectors are particularly sensitive to white, visible smoke (e.g. smoldering fires).
With other types of smoke (e.g. open fires with smoke that is hardly visible and with
thick, black smoke), detection sensitivity is, as a result of the design, somewhat
lesser, but does always comply with the values required in line with EN 54.
The optical detector is available in two designs:
−Standard smoke detector NOM 100 LSN
and
−Smoke detector NOM K 100 LSN for use in a ventilation duct.
The smoke detectors are designed for connection in a local security network (LSN).
Depending on the application, connection takes place with other network elements
in loops or stub lines.
The power supply is provided by the two wires of the data line.
NOM 100 LSN NOM K100 LSN

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1.1. Block Diagram
Power
supply
Send
data
Receive
data
A/D converter
Receiver
NOM 100/NOM K 100
Contamination
measurement
Smoke
measurement
Measuring chamber
Microprocessor
for
−data
transfer
−Sensor
evaluation
FET switch
b LSN 1
a LSN 1
LSN LSN
Tableau
point
Open
collector
rd
ye
b LSN 2
a LSN 2

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2. Features
DDetector polling routines and evaluation with transmission of events in the case of:
−Deviation from basic value
−Detector fault due to the risk of false alarms caused by excessive contamination
−Detector exchange requirement (maintenance)
−Pre−alarm (change in functionality)
−Alarm
DAutomatic adjustment of thresholds
DMeasurement of detector contamination using a separate smoke recording method
DIndividual detector identification
DActive sensor technology self−monitoring with relevant evaluation electronics
DWide sensor check (remote diagnosis)
DDifferent detector display via a two−color LED
(red = alarm, yellow = fault)
DActivation of a remote external detector alarm display
DSeveral base versions are available for the detector.
(See PI−34.95b detector base NMS 100).
DCan be connected to the following fire panels:
−BZ 500 LSN
−UEZ 1000 (LSN)
−UEZ 2000LSN
−UGM 2020 (LSN)
−Control units with receiver modules with identical connection properties
DVdS approval number: G 293004

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3. Planning Notes
3.1. Recommended use
Offices, hotels, hospitals, nursing homes, stores,
theaters, museums, churches, assembly rooms/exhibition rooms
etc.
Clean, maintained
rooms
Easily contaminated
rooms
Depots/machine shops, production/manufacturing workshops with
low dust accumulation etc.
Very contaminated
rooms 1 Rooms with dust and lint accumulation (wood/textile industry)
Very contaminated
rooms 2
Rooms used for raw/semi−finished production for mechanical engi-
neering etc.
with the exception of strong, oily deposits
Electrical
risks 1
Cable ducts, cable funnels, raceways, rooms with electro−techni-
cal/IT/switching stations with a wind speed of < 10m/s
Electrical
risks 2 Object surveillance in switch cabinets/switchboards etc.
Rooms with
corrosive ambient air Chemicals industry, plastics processing etc.
Rooms susceptible
to smoke and
flash formation 1
Manufacturing workshops, smoking offices, conference rooms, laun-
dromats
Rooms susceptible
to smoke and
flash formation 2
Halls with vehicle operation (combustion engines)
Recommended Not recommended
NOM K 100 NOM 100 Use
Wind tunnels with a wind speed of < 20m/s
Wind tunnel
electrical risks 1
Anti−theft protection
If required, detector modules can be secured with a lock to prevent theft or
accidental movement.
Maximum number of detectors in an LSN ring
Owing to the different current consumption from the LSN data line, the maximum
number of network elements (interfaces and detectors) that can be connected must
always be observed.
The limiting values can be determined by reading the product information for the
danger detection system in question.
Installation cable
The installation cable for the NLT line must be a
J−Y(St)Y n x 2 x 0.6 or J−Y(St)Y n x 2 x 0.8 cable.
Norms, guidelines and planning recommendations
Additional norms, guidelines, and planning recommendations with respect to
installation location, monitoring area etc. must be taken into account (see fire
detector manual).

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4. Scope of Order
4.1. Detector Models
Product ID DU*Designation
2.799.330.824 PC NOM 100 LSN optical smoke detector
2.799.330.865 PC NOM K 100 optical smoke detector
for use in a ventilation duct
*DU = Delivery unit, PC = Pieces, PAK = Pack
4.2. Detector base
Product ID DU*Designation
2.799.330.859 PC NMSKV 100 ventilation duct base
4.3. Accessories
Product ID DU*Designation
2.799.330.669 PC External detector alarm display
MPA external detector alarm display according to DIN 14 623
2.799.330.870 PAC Replacement filter (packaging unit = 10 pieces)

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5. Device Design
The NOM 100/NOM K 100 comprises a detector module and a detector base. The
housing is made from impact−resistant ABS plastic.
The NOM K 100 is supplied with a dust filter and the appropriate mounting clamp.
The detector module contains the photo−electronic part with the light source and
the light receiver, a electronic evaluation switching, a wire mesh for insect protec-
tion in the smoke entry opening, shielding against electrical interference fields and
a silent individual display (two−color LED).
The detector base contains the contact and locking pins and the terminal clamps
for the detector line and also offers the option of connecting an external detector
alarm display.
The detector module is engaged in the detector base by slotting it in and turning it.
Several detector base versions are available for NOM 100.
There is a special ventilation duct base for the NOM K 100.
5.1. Dimensions – Detector Module
66
64
∅

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6. Functional Description
Smoke and contamination are measured separately with the NOM 100/NOM K 100.
For smoke measurement, a light source sends 15 light flashes through the mea-
suring area one after the other at one second intervals.
For contamination measurement, an additional light source then sends a light
flash to the opposite interior wall.
In both cases, the light, which contacts a photo diode, provides information about
quiescent state, contamination or alarm.
ÎÎ
ÎÎ
ÎÎ
ÎÎ
ÎÎ
ÎÎ
14 15 1234 5 6 7 8 9 101112131415 4 5
Threshold
Alarm
Number of
Light flashes for smoke measurement
Light flashes for contamination measurement
Scattered light when there is smoke
Î
Reflection light if there is contamination
321
light flashes

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6.1. Smoke measurement
Inside the black interior housing, a light source (infrared LED) sends light flashes
through the measuring area at one second intervals. A photo cell located opposite
is trained on the unlit interior wall, below the LED.
When there is no smoke, only a small amount of scattered light penetrates the con-
vex lens and reaches the photo diode.
The evaluation of this limited volume of light is used to monitor proper detector function.
If smoke penetrates the measuring area, the light flashes are deflected to the
smoke particles. The convex lens helps more scattered light reach the photo diode.
An alarm is triggered if a threshold specified in the detector is reached for three
consecutive scattered light pulses.
The measuring area has a wind−resistant design and permits smoke detection at a
max. wind speeds of 10 m/s at the detector.
Detector NOM K 100 is used in ventilation ducts (up to max. 20 m/s at detector).
No scatter
of light beam
Light beam scatter
by means of smoke particles
Photo diode Light source for
smoke measurement
Measurement when
there is no smoke
Measurement with
smoke penetration

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6.2. Contamination measurement
Contamination is measured using a different method. A second light source
(infrared LED) sends a light flash to the opposite interior wall.
If the detector is not contaminated, the light beam is absorbed almost completely
by the black interior wall. The presence of small volumes of smoke does not lead to
any substantial change.
The evaluation of this limited volume of light is used to monitor proper detector function.
If the detector is contaminated, the accumulated dirt particles cause the light beam
to be reflected.
Bundled by the convex lens, more scattered light reaches the photo cell. Evaluation
takes place irrespective of the scattered light value determined (see also “Detector
Fault”).
No reflection
of light beam
Reflection of the
light beam to
the smoke particles
Photo diode
Light source for
contamination
measurement
Measurement when
detector is not
contaminated
Measurement when
detector is
contaminated

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6.3. Monitoring Stages
Alarm signaling takes place at different thresholds for smoke and contamination.
For smoke
The evaluation is made during smoke measurement using the scattered light
measured and the resulting current.
If specific thresholds, defined in the detector, are exceeded, the detector issues a
corresponding message.
−at 50%: pre−alarm message to the control panel
−at 100%: alarm message to the control panel
A fault message is triggered if the smoke volume falls below the 0% threshold by
approx. 20%.
0%
Time
Quiescent state value
Alarm current
100%
Pre−alarm
Fault
50%
Detector pre−alarm
Can be called up for maintenance purposes
Quiescent state potential with new detector
approx. 1/5 below quiescent state potential
Detector not sensitive enough
Alarm Alarm signaling by detector

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For contamination
The evaluation is made during contamination measurement using the reflection
light measured and the resulting current.
If specific thresholds, defined in the detector, are exceeded, the detector issues a
corresponding message.
−at 30%: service message to control panel and compensation of alarm threshold
−at 60%: order to exchange detector
−at 80%: automatic detector switch−off
A fault message is triggered if the smoke volume falls below the 0% threshold by
approx. 20%.
0%
Time
Quiescent state value
Alarm current
60%
100%
Fault
Exchange
Fault
80%
30%
Slight
contamination
Severe detector contamination
Detector electronics switch off automatically
Slight detector contamination
No impairment of detector
The detector is too contaminated for
reliable smoke detection
An order to exchange is generated automatically
Quiescent state potential with new detector
approx. 1/5 below quiescent state potential
Detector not sensitive enough

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6.4. Alarm Triggering
Alarm triggering when detector is not contaminated
0%
Time
Quiescent state value
Current
2
50%
100%
Alarm
Pre−alarm
1
3
4Alarm
Pre−alarm
1
2
3
4
If there is smoke or contamination, the
current provoked by the photo cell increases.
A pre−alarm is issued by the detector if 50% of the alarm current
is reached. This message and its corresponding detector ad-
dress may be displayed on the control panel if necessary.
Return to quiescent state value if there is no increase in smoke
volume.
An alarm is triggered if the current increases beyond 100% of
the alarm current. The detector LED flashes red.

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6.4.1. Alarm triggering when detector is slightly contaminated
0%
Time
Quiescent state value
Current
50%
100%
Alarm
Pre−alarm
Alarm
measured value with the
increased quiescent state value
Quiescent state value increased
due to contamination
Degree of contamination −
2
1
3
4
5
No alarm −
Compensation of
3
1
2
3
4
Detector contamination means that the quiescent state value
has already increased.
Smoke penetration results in an increased measured value.
The detector compensates for this measured value with the
degree of contamination previously determined and saved.
Return to quiescent state value.
5If, following an increase in the alarm current and the result
compensation by the degree of contamination, the 100%
threshold is exceeded, an alarm is triggered.
The detector LED flashes red.

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6.5. Detector Fault
6.5.1. Detector exchange required/detectors highly contaminated
Time
Current
0%
30%
60%
80%
Fault
Exchange
Fault
Quiescent state value
Slight
contamination
100%
1
3
4
2
1
2
3
4
If there is contamination, the flow through the
photo cell increases
A message may be transmitted if the
30% threshold is reached in 16 consecutive contamination
measurements. The detector alarm threshold will simultaneously
be increased by the degree of contamination to reproduce the
original sensitivity to smoke.
There may be an automatic order to exchange the detector if the
60% threshold is reached.
(approx. 30% has been compensated)
At 80% of the alarm threshold the detector is extremely
contaminated; compensation is no longer possible.
The risk of alarms has increased considerably.
The detector deactivates its measuring system.
The LED flashes yellow.

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6.5.2. Detector not sensitive enough
The detector is automatically switched off if the measured value is approx. 20%
below the 0% threshold. Reliable detection of smoke particles is not possible as the
detector is no longer sensitive enough.
Time
Current
0%
30%
60%
80%
Fault
Exchange
Fault
Quiescent state value
Slight
contamination

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6.6. Planning Monitoring/Change in Functionality
In addition to the monitoring and message functions, the detector can also be used
to call up the analog measured volume in realtime using a special operating mode.
These values can be used for later information.
6.6.1. Planning monitoring
Time
Current
0%
30%
60%
80%
Fault
Exchange
Fault
Quiescent state value
Slight
contamination
Change to planning?
2
1
1
2
The characteristic curve represents the typi-
cal path for a recently installed detector.
There are no fluctuations.
The detector is appropriate for the installa-
tion location.
If, when evaluating the measured values, the
characteristic curve changes but is still within the quiescent state
range, perform a check to reduce the number of false alarms.
If conditions at the installation location have changed since the
planning stage (e.g. smoke generated by operation or increased dust
accumulation), either the causes of the changes must be rectified or
another detector model must be selected.

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6.6.2. Change in functionality
Time
Current
0%
30%
60%
80%
Fault
Exchange
Fault
Quiescent state value
Slight
contamination
2
1
Change in functionality
1
2
The characteristic curve represents the path of a de-
tector that has already been operational for some time.
The value has increased slightly due to contamination.
However ,the detector remains fully functional.
If there are fluctuations outside the quiescent state range, it can be
assumed that the use at the installation location has changed.
With this sort of atypical fluctuation, the causes must be rectified to
prevent a false alarm.