Assembly and Commissioning instructions Lambda

Assembly and Commissioning instructions Lambda
Assembly and
Commissioning instructions
Sensors and systems
for combustion engineering
Lambda Transmitter LT 2
Lambda Probe LS 2
Contents
Introduction
4-8
LT 2 Lambda transmitter
System overview
4-5
LT 2 Lambda transmitter
LT 2 Lambda transmitter type 6 57 R 1025
LT 2 Lambda transmitter type 6 57 R 1025 with
optional display and operating unit
Type 6 57 R 0831
25
19” rack for control panel installation
Input/output modules
4
5
Brief description of the
LT 2 Lambda transmitter
6-7
23-25
23
24
LT 2-19” Lambda transmitter
26
User notes on the operating instructions
8
LT 2-19” Lambda transmitter type 6 57 R 1040
26
What these operating instructions describe
Accessories and special applications
Validity
Standards
Do you have suggestions for improvements?
8
8
8
8
8
Probe junction box (SAK)
27
Probe junction box (SAK) for LS 2
SAK dimensional diagram
SAK wiring diagram
27
LT 2 Lambda transmitter options
28
Display and operating unit
Cold-start delay
29
Display and operating unit type 6 57 R 0831
Cold-start delay
29
29
Safety notes
9-15
Explanation of the symbols
in the safety notes
9
Proper use, conditions of use
10
Applications
10
Analogue outputs
30
Authorised users
11
Analogue outputs
30
Qualified personnel
User groups
11
11
Digital outputs
31
Safety facilities/safety measures
12
Hazards from electric equipment
Preventive measures to improve operating safety
Prevention of consequential damage
12
12
12
Analogue/digital outputs
BUS links
32
Protection against emissions
from gas-carrying channels
Analogue inputs (optional)
Digital inputs
BUS links (optional)
Service and diagnostic software (optional)
32
32
32
32
13
Flue gas temperature
Combustion efficiency
33
Measurement of flue gas and intake
air temperature and calculation of
combustion efficiency (optional)
33
CO2 display
Boundary values/boundary curves
34
Important notes on shutdown/return
to service
14
Shutdown
14
Environmental protection, waste disposal
15
Theoretical background
Measurement principle
16-17
Technical description
18-38
System overview
System overview
Required components
Schematic construction, LT 2 / LS 2
Supplementary components (optional)
Advantages of the zirconium oxide
(ZrO2) measurement principle
18-20
18
18
19
20
LS 2 Lambda probe
Gas extraction device (MEV)
21
LS 2 Lambda probe
Gas extraction device (MEV)
Important to know
21
21
21
LS 2 Lambda probe
Probe installation fitting (SEA)
22
2
Calculation and display of CO2 concentration
Load-dependent and fuel-specific boundary
values/boundary curves
Fine draught measurement
34
34
Detection of CO/H2
35
Switching on the KS 1 combined probe for
the detection of combustible exhaust gas
components
35
LT 2 Lambda transmitter
Instrument configuration and factory settings
a: Display and operating unit
b: Pressure sensor
c: Analogue outputs
d: Analogue inputs
e: Digital outputs
f: Bus card
g: Supply voltage
h: Special configuration
34
36-37
36
36
36
36
37
37
37
37
37
Contents
General notes
38
Practical operating notes
54
Measured gas temperature
Fuels
Measuring site
Gas extraction device (MEV)
Distance probe - LT 2 Lambda transmitter
38
38
38
38
38
Measurements during pronounced
pressure surges at the measuring site
Interruptions, switching on and of
54
54
Installation
39-42
Mounting the LS 2 Lambda probe
39
Outdoor mounting
Installation position
Mounting procedure
39
39
39
Mounting
40-41
Mounting the LT 2 Lambda transmitter
LT 2 wall-mounted housing
LT 2 19” rack
Cut-out dimensions
Connecting terminals
40
40
41
41
41
Electric connections
LT 2 Lambda transmitter - electric connections
Commissioning/shutdown
Preliminary works
Display / operation
Monitor output
Service and maintenance
55-57
Checking the probe
55-56
Checking the Lambda probe LS 2
Checking the air voltage
Checking by counter-measurement
55
55
56
Checking the LT 2/maintenance
57
Checking the LT 2's measuring input
Checking the probe's internal
resistance measurement
Maintenance
Consumables
57
Fault analysis/repairing faults
42
58
59
42
Resetting faults/warnings
59
43-51
43
Causes and solutions
60-62
"Probe wire-break” / defective probe
"Defective LS 2 probe heating”
Probe voltage too low
O2 value incorrect
Internal electronics faults
60
60
60
60
61-62
63-64
43
43
43
Warnings
Causes and solutions
Preliminary works
44
Display and operating elements
44
Service and diagnostic software
45
Display and operating unit (optional)
Service and diagnostic software (optional)
Wiring inspection
45
45
45
LS 2 internal resistance too high
Offset voltage to air invalid
Analogue inputs 1/2/3/4
Configuration error at analogue outputs
Service warning 1/service warning 2
Factory settings
46
Plug configuration
Instrument configuration
46
46
47-48
Measurement Start-up
47
Probe installation
49
Test protocol
50
Shutdown
51
Shutdown
Setting up service warnings
51
51
Operation
52-54
Controls/measurement output
52-53
Measurements
Commands
Status messages
Warnings
Faults
Operating parameters
58-64
Faults
Warnings
Preliminary works
The LT 2 Lambda transmitter's display
and operating elements
Monitor output
Start-up
57
57
57
52
52
53
53
53
53
63
63
63
63
63
Spare parts
64-65
Consumables
Spares
64
64-65
Appendix
66-81
Technical data
Electric connections
Preliminary works
Fuses
Dimensional diagrams
66-69
70-74
75
76
77-79
LS 2 dimensional diagram
LT 2 dimensional diagram - wall-mounted housing
77
78
LT 2-19” dimensional diagram
79
LT 2-19” installed dimensions
LT 2-19” control panel installation
Display and operating unit, add-ons/exchange
plug connectors to computer electronics
80
80
80
Wet/dry measurement
Deviations, conversion table
81
EC conformity declaration
82-83
3
0. Introduction
Outline of System
The Lambda Transmitter LT 1 is a universal, microprocessor-based measuring
device for directly measuring the O2 concentration in the super-stoichiometric
range ( l > 1) in combination with the proven Lambda probe LS 1.
The Combination Probe KS 1 can be connected for measuring combustible
Gas constituents (CO/H2).
19” rack for control panel installation
Lambda
Probe LS 1
LambdaTransmitter LT 2
Combination
Probe KS 1
Notebook
(control,
service)
Option:
CANopen
Modbus
Profibus DP
Interbus-S
field bus
RS 232
CAN, RS 422
Plotter
analogue inputs
and outputs
recording
digital inputs
and outputs
LAMTEC SYSTEM BUS
to other
LAMTEC appliances
FMS / VMS / Etamatic
LT 1 / LT 2
4
analogue inputs
and outputs
analogue inputs
and outputs
optional modules
0. Introduction
Outline of System
LT 2 Lambda transmitter input / output modules
Operational mode/
Service-Display
Lambda probe
LS 2
Multifunction key
Combination probe
KS 1
Maintenance switch
Lambda-Transmitter
Lambda-Transmitter
LT-2
LT-2
Display and
operating unit
Profibus
Interbus-S
SUCOnet-K-BUS
CANopen
Modbus
LT 2 - 19”
standard
RS 232
Operating
and
service
LAMTEC system bus
(CAN bus)
or
Monitor output
0 … 2,55 V DC
RS 422
4 analogue inputs
Configuration
as required
4 analogue outputs
1x standard 3x optional
Configuration as required
8 digital inputs
Configuration
as required
7 Digital output
(Relay)
1x standard 6x optional
Standard
Optional
5
0. Introduction
Brief description of the
LT 2 Lambda transmitter
Universal O2 measuring instrument, based on the LS 2 Lambda probe
(zirconium dioxide voltage probe), for the direct continuous measurement and
monitoring of oil (EL) and gas combustion systems in the super-stoichiometric
domain (l>1) without special gas purification.
LS 2 Lambda probe,
650 R 1000 with gas
extraction device (MEV)
type 655 R 1001 - R 1003
and probe installation fitting
(SEA) type 655 R 1010
LT 2 Lambda transmitter in
IP54 wall-mounted housing,
steel panels
400 x 300 x 155 mm
(h x w x d)
type 657 R 1025
LT 2-19” Lambda transmitter
in 19” rack for control panel
installation 3 HE, 50 TE
173 x 310 x 270
(h x w x d)
type 657 R 1040
6
0. Introduction
Brief description of the
LT2 Lambda transmitter
These operating instructions were written to provide you, the user,
wit clear and unambiguous instructions for installation,
commissioning, maintenance, service and operation.
The operating instructions are subdivided into 11 blocks, each of which is selfcontained and deals with one set of tasks:
0. Introduction
This chapter
1. Safety notes for users
2. Theoretical background,
measurement principle
In this chapter you will find the
fundamental physical context
explained.
3. Technical description
All system components are
described in detail, and the
functional processes explained.
4. Installation
This section provides you, the
user, with important directions for
the installation of all system
components.
5. Commissioning
If you carry out commissioning
yourself, all necessary steps can
be found in this chapter.
6. Operation
This section explains the day-byday use of the O2 measuring
system.
7. Service and maintenance
The fundamental idea behind service and maintenance works is that
regular inspection and preventive replacements and repairs maintain the
device continuously functional and help to avoid damage and failures.
Service means the replacement of worn or damaged parts. Maintenance
means the replacement of consumables such as filters etc, and the
cleaning of units.
8. Fault analysis and
rectification
Any faults that occur should be
rectified as soon as possible. This
section shows you how to go
about identifying solutions, in
order to deal with problems
9. Spare parts
A list of the relevant spare parts,
plus a suggested list of spares that
should always be kept in stock.
10. Appendix
- Technical data
- Wiring diagrams
- LT 2 factory settings
- Fuses
- Dimensional diagrams
- Wet/dry deviations
11. EC Conformity Declaration
Certification of compliance with the European Directives relevant to this device.
7
0. Introduction
User notes on the
operating instructions
What these operating
instruction describe
These operating instructions describe the LT 2 Lambda transmitter with
all the components necessary for O 2 measurements
such as the LS 2 Lambda probe, probe installation fitting etc.
Accessories and
special applications
The accompanying documentation applies to accessories and special
applications. If necessary, please contact the Walldorf works for any
information required.
These operating instructions serve to understand the LT 2 Lambda
transmitter's functions, assembly, installation and maintenance works and
its operation. Other documentation, such as e.g. product data sheets, may
contain further information but should never be used as a substitute for these
instructions.
!
ATTENTION!
Always read the operating instructions before starting work! Carefully
observe all warning notes!
Certain works, such as electric installation, presuppose special expertise.
These works may only be carried out by personnel with the appropriate
qualifications. See the chapter Authorised users.
Validity
Our products undergo constant development. Equally, we make every
effort to ensure that the operating instructions are accurate and
customised for the individual application.
Previous editions become void as soon as a supplemented and amended new
edition is issued.
On the last page you will find the current version number of these operating
instructions and the associated ordering number.
Standards:
The instruments conform to the following Standards and regulations:
Low-voltage Directive
EMC Directive.
See also the Conformity Declaration on pages 82-83.
Do you have suggestions
for improvements ?
8
If you have suggestions for improvements, please write to us immediately,
quoting the current version number and the
associated ordering number. Please write to:
LAMTEC Meß- und Regeltechnik
für Feuerungen GmbH & Co. KG
Impexstraße 5
D-69190 Walldorf
Germany
Baalsdorfer Straße 55
D-04299 Leipzig
Germany
Tel.
Fax
Internet:
email:
(+49) 0341 / 8653(+49) 0341 / 8653-396
http://www.lamtec.de
info@lamtec.de
(+49) 0 62 27 / 60 52-0
(+49) 0 62 27 / 60 52 57
http://www.lamtec.de
info@lamtec.de
LAMTEC Leipzig GmbH& Co.KG
1. Safety notes
Explanation of the
symbols in the safety notes
The following symbols are used in these operating instructions as
important safety notes for the user. They are placed within each chapter
where the information is required. The safety notes, and in particular the
warnings, must always be observed and followed.
WARNING
highlights possible hazards to personnel, particularly through
electrical equipment.
!
WARNING
indicates possible hazards to personnel arising from improper
handling of system parts.
!
ATTENTION!
identifies hazards to system parts or possible malfunctioning.
i
NOTE:
contains additional information important to the user about the system
or system parts, and offers further suggestions.
Occurs in texts containing instructions for carrying out an action.
The operator is urged to observe the statutory accident prevention
regulations when carrying out any works, and to do everything appropriate
to the circumstances in order to avoid personal injury and damage to
property.
9
1. Safety notes
Applications
Proper use, conditions of use
The LT 2 Lambda transmitter is an O 2 measuring instrument for the
continuous measurement of O 2 concentration in non-combustible gases in
the super-stoichiometric domain, in conjunction with the LS 2 Lambda
probe.
If the system is to be used in some other way, and if the instrument's
functionality in this application cannot be unambiguously assessed, the
manufacturer should be contacted in advance.
Prerequisites
It is assumed that facility planning, assembly, installation, commissioning,
maintenance and service works are carried out by sufficiently trained
personnel, and these works are supervised by qualified specialists.
unterwiesenem Personal vorgenommen werden und diese Arbeiten durch
verantwortliche Fachkräfte geprüft werden.
Correct handling
Special attention must be paid to the following:
- The application must conform to the technical data and the
specifications regarding authorised use, assembly, connection,
environmental and operational conditions (derived from the job
documentation, the instrument's user information, rating plates etc),
and to the documentation supplied.
- The local regulations and facility-specific and technical hazards must
be noted and followed.
- All steps necessary to protect the equipment, e.g. during transport,
storage, maintenance and inspection, should be carried out.
10
1. Safety notes
Qualified personnel
Authorised users
Those responsible for safety must always ensure that
- only qualified personnel carry out work on system parts. Qualified personnel
have been authorised by those responsible for maintaining the safety of
employees and that of the facility, to perform such activities as a result of
their training, experience or familiarity with the relevant Standards,
regulations, accident prevention measures and local conditions. The
important factor is that such personnel are able to identify and
prevent possible hazards in good time.
Specialist personnel are those meeting DIN VDE 0105 or IEC 364, or directly
comparable Standards such as DIN 0832.
- these personnel have the supplied operating instructions and the
associated, job-related documentation available to them during all works,
and observe these documents in order to avoid hazards and damage.
User groups
Two user groups are assumed to handle the LT 2 Lambda transmitter:
A
Service technicians of LAMTEC or their OEM customers, or the
customer's trained personnel:
qualified technicians/engineers have very good knowledge of the instrument.
B
Operators, the customer's installers,
measurement/control/electric/electronic technicians have elementary knowledge of the instrument.
11
1. Safety notes
Hazards from electric
equipment
Safety facilities/safety measures
The LT 2's system parts are items of equipment designed to be used in
industrial high-current facilities. When working on parts connected to the
supply or carrying supply voltage, disconnect from the supply and ensure
zero voltage. Re-install all machine guards before reconnecting to the
supply.
Damage to health or to property may result from improper use or incorrect
handling. To prevent damage, observe the appropriate safety notes.
Preventive measures for
improving operating safety
Where the LT 2 is used as a sensor in conjunction with regulating or control
systems, it is the operator's responsibility to ensure that LT 2 failure or faults
cannot lead to dangerous situations or those that cause unacceptable
damage.
In order to prevent faults, which in turn could cause direct or indirect
damage to personnel or to property, the operator must ensure that
- the appointed maintenance personnel can be notified at any time and as
soon as possible
- the maintenance personnel are trained to respond correctly to LT 2 faults
and associated operational faults
- in the event of doubt, the affected equipment is immediately switched off
- switching off does not lead to direct consequential faults
Prevention of consequential
damage
12
To prevent consequential damage in the event of instrument faults, which
in turn could cause direct or indirect damage to personnel or property,
ensure that qualified personnel assess the faults and initiate appropriate
steps.
1. Safety notes
Protection against emissions
from gas-carrying channels
The LT 2 Lambda transmitter is directly attached to the gas-carrying
channel, via the probe installation fitting (SEA). If the LS 2 Lambda probe
or the SEA installation fitting are dismantled; then depending on the
facility and particularly in the event of excess pressure, aggressive and/or
hot gas may be emitted from the channel and cause severe health
damage to unprotected operatives, unless suitable protective measures
have previously been put into place.
!
WARNING
In the event of excess pressure and temperatures above 200°C in the gas
channel, dismantling the LS 2 Lambda probe or the installation fitting lead
to the emission of gases.
- Switch off the facility before opening. If this is not possible, wear
protective clothing and a protective mask.
- Put up appropriate warning signs near the installation site.
- Close the aperture at once.
13
1. Safety notes
Important notes on
shutdown/return to
service
The LT 2 Lambda transmitter and the LS 2 Lambda probe form a highquality electronic measurement system. Treat them with care at all times,
including during shutdown, transport and storage.
Shutdown
!
ATTENTION!
Do not switch the LT 2 Lambda transmitter off as long as the LS 2 Lambda
probe is mounted; incl. when the relevant facility has been shut down.
Residual gases cause corrosion and may damage system parts.
Do not store the instruments outdoors without protection!
Always store in a dry place, if possible in the original packaging.
When dismantling, protect cable ends and plugs against corrosion and
dirt. Corroded plugs may cause malfunction.
If possible, transport in the original packaging.
14
1. Safety notes
Environmental protection,
waste disposal
The LT 2 Lambda transmitter's construction is also based on
environmental considerations.
The modules can easily be separated and sorted into distinct types, and
recycled accordingly.
15
2. Theoretical background
Measurement principle
In essence, the LS 2 Lambda probe
consists of a zirconium dioxideceramic electrochemical cell. The
cells operates as an electrochemical
concentration chain, and generated
direct voltage that depends on the
absolute temperature T and the
logarithm of the O2 concentration or
the O2 partial pressure ratio at the
inner and outer electrodes.
If the outer electrode is supplied with
the test gas and the inner one with a
reference gas with a known O2
concentration, such as e.g. air
(20.96%), then assuming the
temperature is held constant, we
obtain the logarithmic relationship
between probe voltage E and the
Schematic construction of
the ABB oxygen probe
oxygen concentration of
the test gas shown below. The
characteristic curves for two different
temperatures T1 and T2 show clearly
that when using the voltage probe,
the temperature affects the
measured value in the cell's active
part. In addition, the curves show
that the probe is preferentially
suitable for measuring low oxygen
concentrations, since sensitivity and
accuracy increase with decreasing
O2 concentration because of the
logarithmic relationship.
Since the measurement of high O2
concentrations is subject to high
error due to the low voltage
dependence, it is not possible to
use, for example, air (20.96% O2) to
calibrate or tune the probe.
Each LS 2 Lambda probe is tested at
the factory under real-life conditions,
in a gas-combustion system with an
exhaust temperature of ca. 150°C.
The test protocol is enclosed with
each probe. The sensor temperature
recorded in the protocol should be
input into the LT 2 during
commissioning. Calibration with test
gases is not required.
The voltage probe's working
principle
The voltage probe's equivalent
electric circuit diagram and
working principle
-20
Gas intake
Working electrode
O2 + 4e
-20
O2 + 4e
Gas: p (G)
O2
During operation it is possible to
check and compensate for the
measured values through countermeasurement; see 7.1.2, page 56.
Luft: p (L)
O2
US
UH
UH
13V AC/DC
Zirconium oxide ceramic
Protective layer
Reference
electrode (Pt) Housing
Us = 0,049 · T · log
p (L)
O2
p (G)
O2
Us
O2 [%] = 20,96 · 10
LS 2 Lambda probe
with MEV and SEA,
standard version
16
0,049
.T
US
2. Theoretical background
Measurement principle
The curve shown below
demonstrates that oxygen
measurements require knowledge of
the proportionality factor and of the
probe's temperature. In practice this
means that the probe's tuning is
possible simply through air voltage
compensation (offset
compensation), and entering the cell
temperature obtained during final
testing in accordance with the test
protocol enclosed with the probe
(usually ca. 1000 K) during
commissioning with the LT 2.
The probe's logarithmic
i
characteristic depends on cell
temperature and on each probe's
individual curve. The temperature of
the solid electrolyte and of the
electrodes affects the probe's signal,
however the probe is heated with
constant current to ca. 730°C. The
temperature of the measured gas
and the installation site affect the
cell's temperature only slightly.
Hence, probe temperature needs to
be neither measured nor regulated.
Individual deviations are
compensated for during
commissioning by adjusting the air
Note:
voltage (offset compensation) and
entering the sensor temperature
obtained during final testing and
recorded in the test protocol.
The probe can only be used up to a
gas temperature of 300°C. Probe
ageing in long-term operation leads
to a stretching of the characteristic
curve. However, this can be
recognised from the fact that the
internal resistance increases.
The probe should be replaced every
2 heating periods, however no later
than after 10.,000 hours in operation.
Calibration of the LS 2 Lambda probe with test gases has
been avoided for the sake of simple handling and low
maintenance. The probes are measured at the factory under
operational conditions (gas combustion, exhaust gas
temperature 150°C). Individual deviation is taken into
account by adjusting the air voltage (offset compensation)
and entering the obtained sensor temperature obtained
during commissioning.
Measurement accuracy is ±10%, at best ±0.5% vol. O2.
Measurement and calibration diagram of the LS 2 oxygen probe. The effect of temperature on the probe's
Us
characteristic curve.
O2 [%] = 20,96
·
10
0,049
.T
120
mV
100
80
60
* 500°C
US
* 800°C
IW
40
20
0
0
* T = const
1
2
3
4
5
O2 %
6
7
8
9
17
3. Technical description
3.1 System overview
Required components
System overview
The O 2 measurement system is available in various versions.
It consists of the following components:
- LS 2 Lambda probe
- Gas extraction device (MEV)
- Probe installation fitting (SEA)
- Probe junction box (SAK)
- LT 2 Lambda transmitter
either
in 19” rack for control panel installation, incl. display and operating unit
or in IP 54 wall-mounted housing
3.1.1 Schematic
construction, LT 2 / LS 2
1
Probe signal
Plug
2
1
2
3
4
Probe heating
5
3
4
6
Measured gas,
max. 300°C
Key:
1 LS 2 Lambda probe, type 650 R 1000
2 Gas extraction device (MEV),
type 655 R 1001-R 1003
3 Probe installation fitting (SEA), type 655 R 1010
4 Half-collar R 1.25”, type 655 R 1012
5 Probe junction box (SAK), type 655 R 1025
6 Display and operating unit, type 657 R 0831
LT 2 Lambda transmitter
19” rack for control panel installation
Type 657 R 1040
6
LT 2 Lambda transmitter in IP 54 wall-mounted housing
Type 657 R 1025, sheetsteel , 400 x 300 x 200mm (h x w x d)
18
3. Technical description
3.1.2 Supplementary
components (optional)
System overview
- Display and operating unit
(already included in the 19” version)
- Measurement of flue gas and intake air temperature and calculation of
combustion efficiency
- Calculation of fuel-specific CO2 concentration,
computed from the measured O2 value and the CO2 max. value.
- Load dependent and fuel-specific boundary values / boundary curves
- KS 1 combined probe for the detection of combustible components (CO/H2)
(1) - Fine draught measurement
- 1…3 supplementary analogue outputs, max. 2, floating (output 1 and 2),
max. potential difference ±20 V
Range and physical size can be configured
-
Direct current
Load
Direct voltage
Load
0/4…20 mA
0…600 W
0…10 V
> 10 kW
- Relay module for digital outputs with 6 relays (1 switcher) for outputting
operational, boundary value and status messages, switching capability 230
V AC, 4 A
or
Relay module 660 R 0012 with 3 relays
(2 switchers), switching capability 230 V AC, 4 A
- 1…4 analogue inputs via 4 cards, arbitrary configuration, e.g. for switching
on temperature sensors, additional pressure sensors of the KS 1 combined
probe, standard signals etc; max. 2 of those floating, potential difference
±20 V max.
(1) - Test safety circuit for semi- or fully-automatic control of shutdown functions
- BUS interface for
Profibus DP
Interbus-S
SUCOnet-K-bus
Modbus
(1) CANopen
(1) - Service and diagnostic software for PC, Windows-based.
(1) In preparation
19
3. Technical description
3.1.3 Advantages of the zirconium
dioxide (ZrO 2) measurement principle
System overview
- No gas purification necessary,
measurement directly in humid flue gas
- Gas temperature up to 300°C
- No calibration gases required
- No reference gas pump required
- No temperature regulation of the measuring cell required
- Adjustment time to 90% value (T90) < 15 seconds with
standard extraction
- Low heating power 15…25 watt
depending on the zirconium dioxide cell's ageing
- Universally applicable
- Simple handling
Probe connected via plug
- Low maintenance
20
3. Technical description
3.2 LS 2 Lambda probe
LS 2 Lambda probe
Gas extraction device (MEV)
The LS 2 Lambda probe is the transducer. It is located directly in the
exhaust gas stream. The gas to be measured is fed to the probe via the
gas extraction device (MEV). Measurement takes place directly in the
probe. The LS 2 Lambda probe is connected to the junction box via a 4
strand cable with two plugs.
Wiring between SAK and LT 2 Lambda transmitter via conventional cable
and terminals, see wiring diagram on page 27 and in the Appendix,
pp 70-72.
Alternatively, direct connection LS 2 D LT 2 without SAK is possible via a
customised cable (2, 5, 10 and 20 m), see wiring diagram in the Appendix,
pp. 70-72.
3.2.1 Gas extraction
device (MEV)
The gas extraction device is available in four different lengths (150 mm,
300 mm, 450 mm, 1000 mm).
During installation please observe the flow direction!
The MEV's length should not exceed the minimum required. Maximum
possible length 1 m. Only recommended in low-vibration installation sites.
Important to know:
Core flow measurement”, which sometimes is stated as a strict requirement,
is mostly superfluous. "Strands” are extremely rare in practice. According to
current experience, they occur:
a) At the collision of gases of different temperatures; mostly air leaks to the
exhaust gas.
b)At gas velocities below 1 m/s (separation). However, when genuine
"strands” occur it is extremely difficult to find an extraction position
suitable for all operating conditions within the gas extraction device's
length. Even the core flow is not immune to genuine strands, and they
tend to "wander”.
i
NOTE We repeat:
Only make the MEV as long as is absolutely necessary. Lengths exceeding
450 mm should be avoided if possible.
21
3. Technical description
3.2.2 Probe installation fitting
(SEA)
LS 2 Lambda probe
Probe installation fitting (SEA)
The probe installation fitting is attached at the measurement site, and
serves to take up the LS 2 Lambda probe (see illustration).
LS 2 Lambda probe, type 650 R 1000 with MEV 655 R 1001 (150 mm)
Half-collar R 1.25” DIN 2986
type 655 R 1012
LS 2 Lambda probe
type 650 R 1000
Fig. 1
Probe installation
Fig. 1: LS 2 without MEV
Fig. 2: LS 2 with MEV
Welded
Flue gases
Fig. 2
Rating plate
Probe installation fitting
(SEA) type 655 R 1010
Flue gases
22
Gas extraction
device (MEV)
type 655 R 1001…1004
3. Technical description
3.3 LT 2 Lambda transmitter
LT 2 Lambda transmitter
The LT 2 Lambda transmitter is the LS 2 Lambda probe's analyser. It
contains all the components necessary to operate the probe and analyse
the measured signals. It also contains additional analogue inputs ands
outputs, digital inputs and outputs for operational, status and boundary
value messages, as well as serial interfaces and a universal BUS interface
(optional) for coupling to the customer's control systems.
Two basic versions can be supplied:
- Mounted housing in sheet steel, lockable front door with impact
resistant inspection window, IP 54
- Control panel housing, 19” system 3 HE 50TE for mounting in the control
cabinet door
LT 2 Lambda transmitter
type 6 57 R 1020…R 1029
with display and operating unit
type 6 57 R 0831 (optional)
LT 2 Lambda
transmitter, 19”
type 6 57 R 1040
23
3. Technical description
LT 2 Lambda transmitter
3.3.1 LT 2 Lambda transmitter type 6 57 R 1025
Probe and electronics transformer
Processor electronics
Main switch
Connector for
service and
diagnostic
software
(optional)
Relay module
660 R 0017
Electric
connections
Terminal strip x2
Supply point
Monitor output
Earth rail for cable screening
Operating mode display
Multifunction keys
Maintenance switch
BUS interface
or LAMTEC
system bus
(CANbus)
RS 422
Selection
power supply
115 V
230 V
24
Accessible after removing the
front plate with the main switch ("POWER”)
3. Technical description
LT 2 Lambda transmitter
3.3.2 LT 2 Lambda transmitter type 6 57 R 1025 with optional display and operating unit type 6 57 R 0831
Probe and electronics transformer
Connector for
service and
diagnostic
software
(optional)
Main switch
Display and
operating unit
type 6 57 R 0831
Connecting
cable with plug
for the display
and operating
unit
Relay module
660 R 0017
Electric
connections
Terminal strip x2
Monitor output
Supply point
Earth rail for cable screening
Operating mode display
Multifunction keys
Maintenance switch
BUS interface
or LAMTEC
system bus
(CANbus)
RS 422
Selection
power supply
115 V
230 V
Accessible after removing the
front plate with the main switch ("POWER”)
25
3. Technical description
LT 2-19” Lambda transmitter
3.3.3 LT 2 Lambda transmitter 19” type 6 57 R 1040
Display and operating
unit
(standard in LT 2-19”)
Umschaltung
Versorgungsspannung
230 / 115 V AC
see fig., page 25
Relay module
660 R 0017
Connector for
service and
diagnostic
software (optional)
Probe and
electronics
transformer
Operating mode
display
Multifunction keys
Maintenance switch
Terminal strip x2
Electric
connections
Connecting terminals
accessible after
backplate's removal
Cable routing holes
Supply poin
via cold instrument
plug
26
3. Technical description
3.4 Probe junction box
(SAK) for LS 2
Probe junction box (SAK)
For use at large distances between probe and analyser, where no customised
cable is employed.
Input:
Probe plug
Output: Terminal strip
The SAK contains a terminal strip and conversion to the probe and heating plugs.
SAK dimensional diagram
Probe junction box for LS 2
80
2
3
80
1
4
GZAH 018 655 R 1025
Height: 40 mm
Safety class: IP55
SAK wiring diagram
-
1
signal
+
2
Probeheating
3
* 13 VDC
4
*
Probe
i
Note:
The heating voltage is cyclically
reversed (+/-). Measurement with a
voltmeter is therefor only possible to a
limited degree.
27
3. Technical description
3.5 Options
LT 2 Lambda transmitter
Options
- Display and operating unit
6 57 R 0831
- Measurement of flue gas and intake air temperature and calculation
of combustion efficiency 657 R 0895
- Calculation of CO 2 concentration, fuel-referenced, computed from the
measured O 2value and the CO 2 max. Value 657 R 0910
- Load-dependent and fuel-specific boundary values/boundary curves
657 R 0920
- KS 1 combined probe for detecting combustible components
(CO/H 2) (on request)
1
- Fine draught measurement
(on request) 657 R 0110
- 1…4 analogue outputs (0/4…20 mA, 0…10 V), max. 2 floating
(outputs 1 and 2), max. potential difference ±20 V
Arbitrary configuration
Direct current 0/4…20 mA
Load 0…600 W
Direct voltage 0…10 V
Load > 10 kW
Analogue output card 0/4…20 mA, 0…10 V
6 57 R 0050
Analogue output card 0/4…20 mA, 0…10 V floating,
max. potential difference ±20 V
6 57 R 0051
- Relay module for digital outputs with 6 relays (1 switcher) for outputting
operational and status messages
Switching capability 230 VAC, 4A
6 60 R 0017
or
Relay module 6 60 R 0012
3 relays (2 switchers)
Switching capability 230 VAC, 4 A
- 1…4 analogue inputs via measurement cards, arbitrary configuration
e.g. for temperature sensor, further pressure sensors, KS 1 combined
probe,standard signals etc;
max. 2 of these floating
max. potential difference ±20 V
- BUS connection for Profibus DP, Modbus, Interbus-S, SUCOnet-K,
CANopen etc.
Consists of:
BUS card 6 63 P 0400
BUS interface for BUS card 6 63 P 0400
6 63 R 0301
- Interface module RS 422 / 485
6 63 P 0500
- Interface module RS 232
(on request)
6 63 P 0600
- Interface module RS 232 for PC, incl. licence for service and
diagnostic software
6 57 R 1101
1
in preparation
28
- Additional licences for service and diagnostic software
6 57 R 1102
3. Technical description
Display and operating unit
Cold-start delay
3.6 Display and operating unit
type 6 57 R 0831
Cursor
keys
Optional with LT 2 in wal
lmounted housing
type 657 R 1020…R 1029.
Included as standard in LT 2 - 19”
for panel installation
see separate publication.
LAMBDA TRANSMITTER LT2
Measure
O2 measured value [Vol.%]
21.0
ENTER
meas
cal
par
diag
LAMTEC
Menu keys
3.7 Cold-start delay
ENTER
key
Serves to suppress false measurements while the probe warms up to
operating temperature.
Cold-start delay is always activated after "Power off” and probe
replacement.
The cold-start delay can be aborted at any time
-
via the multifunction key
via the optional display and operating unit, see separate publication
optional operating unit via interface, see separate publication
via service and diagnostic software, see separate publication
During the cold-start delay, either
D a substitute value (factory setting O2 D 0 vol.%)
D the "current measured value”is output.
The zirconium dioxide cell's internal resistance is monitored during the
cold-start delay. Measurement is authorised only once the resistance is
below the threshold value of 200 W , after expiry of the specified delay.
29
3. Technical description
LT 2 Lambda transmitter
Analogue outputs
3.8 Analogue outputs
0/4…20 mA, 0…10 V
Via mini plug-in cards to LT 2 processor card (max. 4) - can be added on at
any time
Parameter group 530 to 569
- Type 6 57 R 0050 potential-biased (1 channel)
J901
C902
J903
C903
C907
R904
R919
LP903
R918
LP902
R917
LP901
R907
C901
R908
R905
R915
C908
IC903
C905
R909
Bridge voltage
output 0/2 … 10 V
R901
D905
BR903
IC901
C906
L901
R902
LP904
BR901
BF901
R920
T901
R910
R914
R916
R906
Bridge current
output
0/4 … 20 mA
R921
R912
L903
C904
J904
C909
R913
R911
D903
D904
T902
J902
Toggling between voltage and current outputs is exclusively hardwarebased, via jumpers.
The choice between 0 or 4…20 mA is via software, using the appropriate
parameters.
- Type 6 57 R 0051 floating (1 channel), max. possible potential difference
±20 V (only possible at outputs 1 and 2).
30
3. Technical description
3.9 Digital outputs
LT 2 Lambda transmitter
Digital outputs
Digital output 1:
Via internal relay (1 switcher) to LT 2 supply section
electronics
1…48 V DC / AC; 3 A
as standard
12…230 V AC / 4A
Digital outputs 2 to 7:
660 R 0017
(optional)
Via internal relay module
6 relays (1 switcher), switching capability
max. 230 VAC,4A
or (on request):
Relay module 660 R 0012
3 relays (2 switchers), switching capability
max. 230 VAC, 4 A,
only for digital outputs 2-4
Parameter group 1030 to 1069
The outputs can be configured arbitrarily via the (optional) display and
operating unit and the service and diagnostic software.
Relay module 660 R 0017
31
3. Technical description
3.10 Analogue inputs (optional)
Parameter group
570 bis 609
LT 2 Lambda transmitter
Analogue/digital outputs
BUS links
Via mini plug-in cards to LT 2 supply section electronics (max. 4)
- Universal module for one analogue input
Potentiometer, 0/4…20 mA
Type 6 63 P 6000
- Temperature input for PT 100
Range either 0…320°C
or
0…850°C
(please specify when ordering)
Type 657 R 0890
Electric connections: see 3.14, page 33
- Further modules in preparation
3.11 Digital inputs
Parameter group
1170 to 1249
8 digital inputs to LT 2 supply section electronics, 24 V DC, 6 mA
either referenced to instrument potential or floating (see Electric
connection in the Appendix, page 70), arbitrarily configured via (optional)
display and operating unit and service and diagnostic software.
3.12 BUS links (optional)
Consists of:
BUS card type 663 P 0400
can be added on to LT 2 processor card (see page 66)
BUS interface type 663 R 0301
for the systems
Interbus-S
(Phoenix)
Profibus DP
(Siemens)
Modbus
SUCOnet
(Klöckner, Möller)
CANopen
(in preparation)
For details see separate
publication
3.13 Service and
diagnostic software (optional)
Type 657 R 1101
For PC, Windows-based. Coupling to LT 2 via RS 232 interface.
32
3. Technical description
3.14 Measurement of flue gas
and intake air temperature
and calculation of
combustion
efficiency (optional)
Type 6 57 R 0895 / R 0896
Flue gas temperature
Combustion efficiency
The calculation follows the formula:
n F = 100 - ( q Af + q Ag ) %
q Af = Exhaust gas loss through free heat
q Ag= Exhaust gas loss through bound heat
A2
q Af = ( t A - t L ) 2 [
+B]
21 - O2
Calculation of exhaust gas losses is based on the following
mean fuel values:
:
Oil
Gas
A 2 = 0.68;
A2 = 0.66;
B = 0.007
B = 0.009
It is assumed that the combustion is CO- and soot-free.
Exhaust gas losses through bound heat are not taken into account.
Display:
Efficiency
Exhaust gas losses
Exhaust gas temperature
Intake air temperature
Other ranges on request.
0 … 100%
0 … 100%
0 … 320°C
0 … 320°C
Measurement accuracy:
Temperature - better than 2K
Efficiency / exhaust gas losses - better than 0.2%
Electric connections:
depending on configuration / equipment
Measurement card
1
2
3
4
14
18
22
26
13
17
21
25
12
16
20
24
11
15
19
23
PT 100
measuring
element
no
connect
In the 657 R 0896 version, the intake air is specified as a constant. The
intake air temperature is not measured. Only recommended where the
intake temperature remains nearly constant over the whole year.
33
3. Technical description
3.15 Calculation and display
of CO2 concentration
(optional) Type 657 R 0910
LT 2 Lambda transmitter
CO2 display
Boundary values/boundary curves
The calculation follows the formula:
CO 2 = CO 2 max -
21% - O2
21%
The calculation is based on
the following max. CO 2 contents at l = 1 ^ O 2 = 0 vol.%,
referenced to dry exhaust gas:
Heating oil
Natural gas
Natural gas
EL
H
L
15.4 vol.%
12.0 vol.%
11.7 vol.%
Individual specification of CO 2max is possible via the parameters 846,
862, 878 and 894.
3.16 Load-dependent and
fuel-specific
boundary values/
boundary curves
(optional)
Type 657 R 0920
The load value (burner load) or some other measured quantity is supplied via
analogue input 4. Instead of fixed boundary values, fuel-specific curves with 2
up to a maximum of 8 checkpoints can be entered.
Boundary curve 1
Fuel 1
(curve 5)
vol. % O2
Boundary curve 2
Fuel 1
(curve 7)
x
5
2
x
x
41
x
x
30
Burner load [%]
0
20
40
60
80
100
0
4
8
12
16
20
Specified load [mA]
Boundary curves (factory settings), parameters adjusted to values
below threshold.
Possible combinations:
either
-
2 fuels with 4 boundary curves / boundary values per fuel
4 fuels with 2 boundary curves / boundary values per fuel
For details see supplement to the operating instructions for the optional
"Display and operating unit”.
3.17 Fine draught measurement
(optional)
Type 657 R 0110
Differential pressure sensor for measuring
Flue draught
Combustion chamber pressure
etc.
On request D please specify the required pressure range.
34
3. Technical description
LT 2 Lambda transmitter
Detection of CO/H2
3.18 Switching on the KS 1 combined probe for the detection of combustible exhaust components CO/H2
Shown as COe (optional)
KS 1
till 2001
US
-50...950 mV
SAK
KS 1
L
N
PE
LS 2
UH
13 VAC
IRS
4...20 mA
Exhaust gas
4...20 mA
UKS1
O2
O2
Nernst
[Vol.%]
Output (display, analogue outputs)
IKS1
UKS1
Measured value config.
US
-50...950 mV
U KS1
UCOe = UKS1 - UO
O2
0...150 mV
UO2
Nernst
2
U O2
O2
UCO
e
Measured value config.
UCo
e
COe
LT 2
UCO
e
Coe
[ ppm ]
Measured value config.
KS 1
until 2001
LT 2
LS 2
Exhaust gas
LAMTEC SYSTEM BUS
O2
O2
Nernst
[Vol.%]
Output (display, analogue outputs)
US
UKS1
Measured value config.
-50...950 mV
U KS1
UCOe = UKS1 - UO
O2
0...150 mV
UO2
Nernst
2
U O2
O2
UCO
e
Measured value config.
UCo
e
COe
LT 2
UCO
e
Coe
[ ppm ]
Measured value config.
35
3. Technical description
3.20 Instrument configuration
and factory settings
LT 2 Lambda transmitter
The instrument's configuration and the factory settings can be derived from
the configuration number. The configuration number is found on the inside of
the housing door, or on the rear in the case of LT 2-19”.
The configuration number consists of 17 digits, and is constructed according
to the following key:
Configuration number for LT 2
____________________________________________________________________
a x b x c xxxx d xxxx e x f x g x h xxxx
1234
1234
Probe configuration
Supply voltage
(factory set)
Bus card
Digital inputs 2-7
Analogue inputs
Analogue outputs
Pressure sensor
Display and operating unit
a: Display and operating unit
b: Pressure sensor
(via analogue input; see d)
c: Analogue outputs
0
D without
1
D with
0
D without
1
D absolute pressure
2
D differential pressure
3
D fine draught measurement
Output
1 2 3 4
36
0
D not used
1
D 4...20 mA
2
D 0...20 mA
3
D 0...10 V
4
D 4...20 mA floating
5
D 0...20 mA floating
6
D 0...10 V floating
3. Technical description
d: Analogue inputs
LT 2 Lambda transmitter
Input
1 2 3 4
e: Digital outputs
f: Bus card
g: Supply voltage
(factory-set)
h: Special configuration
0
D not used
1
D potentiometer 1 kW…5 kW
2
D current 0/4…20 mA
3
D DPS input
4
D Impulse input (Namur)
5
D PT 100 input
6
D Flame detector
7
D current 0/4…20 mA, galvanic isolation
8
D current 0/4…20 mA with +24 V DC feed
9
D Pressure sensor type see b
0
D open collector
1
D 2 to 4 relays
2
D 2 to 7 relays
0
D not used
1
D Interbus-S
2
D SUCOnet-K, CANopen, Profibus DP, Modbus
1
D 230 V AC
2
D 115 V AC
3
D 24 V AC
4
D 24 V DC
5
D special voltage
----
37
4. Technical description
General notes
4.1 General notes
Measured gas temperature
< 300 °C
Fuels
Suitability:
- Light hydrocarbons such as natural gas, propane, butane
- Light heating oil
- Other fuels such as e.g. heating oil S, coal, pyrolysis gases etc, under
restricted conditions, with distinctly reduced useful life.
Measuring site
The measurement site should be so chosen that representative exhaust
gas (complete mixing) is present. Exhaust gas temperature at the
measurement site: max. 300°C.
Gas extraction device
(MEV)
The gas extraction device is simply fitted onto the probe and fastened with
a screw.
i
NOTE:
It is not necessary for the MEV to reach all the way to the
centre of the flue gas channel. It suffices to have
representative measured gas at the MEV's flow apertures.
Guideline: The length of the probe with MEV should be ca. 1/3 of the flue
diameter.
Available lengths: 150 mm, 300 mm, 450 mm and 1000 mm.
Distance
probe - LT 2 Lambda transmitter
(cable length!)
- up to 20 m:
Connection via pre-made extension of 2 m, 5 m, 10 m and 20 m
recommended;
or through locally-made wiring via probe junction box. (1)
- beyond 20 m: :
via probe junction box. (1)
(1) see diagram in 3.1.1 "Schematic construction”, page 18, and under
3.4, page 27 and wiring diagrams in the Appendix.
Connection via a probe junction box has the advantage, compared with a
probe extension, that conventional cable can be used for wiring from the
probe's junction box onward. Thus, the cable's length can be adapted on
site to local conditions.
Recommended cable cross-sections for probe heating (from LT 2
Lambda transmitter terminals 35 and 36, to probe junction box
terminals 3 and 4)
Cable length
Cross-section
SAK-LT
2
________________________________
unter 20 m
bis 20 m
2
= 1,5 mm
2
= 2,5 mm
All other connecting cables (screening necessary)
2
> 0,5 mm
bis 10 m
2
> 0,75 mm
über 10 m
38
4. Installation
Mounting the LS 2 Lambda probe
4.2 Mounting the LS 2 Lambda probe
Outdoor mounting
The measurement site should be protected on site against direct contact
with rainwater, through a sufficiently large roof.
Installation position:
The installation position can be chosen arbitrarily, from the horizontal to
the vertical (see diagram):
Installation position
- Drill or burn out a hole in the flue channel, with diameter R 1.25”.
Mounting procedure
- Firmly weld a half-collar, interior thread R 1.25”, "tight” at the
measurement site.
- Screw in the SEA without probe, and tighten.
- Seal the SEA aperture if necessary with a blank cap.
!
ATTENTION: When making the apertures, any parts falling into the
channel may cause damage. Secure parts to be
separated with wires!
i
NOTE:
Suitable protective measures should be taken against
emerging hot, explosive or health-damaging exhaust
gases.
Only install the probe immediately before commissioning. In
its installed state, the LS 2 Lambda probe should always be
heated. This avoids the precipitation of moisture on the
measuring cell, which in certain cases could lead to
erroneous measurements and to the probe's destruction.
39
4. Installation
Mounting
4.3 Mounting the
LT 2 Lambda transmitter
Ambient temperature
Operation:
Transport and storage:
i
4.3.1 LT 2 wall-mounted housing
Note:
-20 °C bis +60 °C
-40 °C bis +85 °C
This motto should always be observed
when determining the LT 2 Lambda transmitter's
installation site.
- Mount the LT 2 Lambda transmitter at a suitable location
Electric connections and probe connector underneath
See also LT 2 dimensional diagram in the Appendix, page 78
300
LAMBDA TRANSMITTER LT2
Power
LAMTEC
1 2 3
31 32 33 34 35 36 46 47 48 49
1112 13 14 15 16 17 18 19 20 21 22 23 24 25 26
Diagram: LT 2 wall housing without door
with (optional) display and operating unit
40
350
42 43 44 45
65 66 67 68 69
60 61 62 63 64
71 72 73 74 75
400
298
ENTER
4. Installation
Mounting
C ontrol panel installation, safety class IP20; front side IP40
Ensure sufficient ventilation, if necessary provide forced ventilation.
Interior control cabinet temperature max. 60°C.
Electric connections at rear accessible after removing the back panel, see the
following diagrams.
4.3.2 LT 2 - 19” rack
270
41
270
41
270
293
18
293
18
293
310
310
173
173
57
137
36
116
57
137
4.3.2.1 Cut-out dimensions:
310
4.3.2.2 Connecting terminals
Loosen back
panel mounting
screws
Earth rail for
cable screening
i
Note:
The LT 2 contains jump terminals. In the LT 2 -19”, these are
also easily accessible after installation, with the back panel
removed.
41
4. Installation
Electric connections
4.3.3 LT 2
Lambda transmitter
electric connections
WARNING
When working on any electric facilities, disconnect them from the supply and
check for zero voltage. The relevant safety regulations must be observed at
all times.
i
Note:
Observe recommended cable cross-section for probe
heating:
Cable length SAK-LT 2
under 20 m
= 1.5 sq. mm.
up to 40 m
= 2.5 sq. mm.
All other connecting cables
up to 10 m
> 0.5 sq. mm.
above 10 m
> 0.75 sq. mm.
Wiring diagrams in the Appendix, pages 70-72
!
Attention:
A Observe proper cable routing and screening.
Probe connections:
the signal line, LT 2 terminals 33 and 34, must not be laid
together with supply cables, particularly revolution speed
control cables from frequency converters. Any coupling to
the power circuit should be avoided.
Warning:
Incorrect probe connections can destroy the probe. Check probe
connections at terminals 33 to 36 before commissioning.
33 (-)
34 (+)
35
36
42
Probe signal
Probe signal
Probe heating
Probe heating
5. Commissioning/shutdown
5.1 Preliminary works
5.1.1 The LT 2 Lambdatransmitter´s display and
operating elements
i
Preliminary works
Display / operation
Monitor output
The LT 2's operation and the display of measured valued, operational and
error messages take place via the (optional) display and operating unit,
see separate publication no. D LT 2002.99D, or via a PC in conjunction
with the (optional) service and diagnostic software, or via an external
operating unit using an RS 422 interface (in preparation). The LT 2 itself
has only limited operating capabilities, which however allow it to initiate or
to display on the LT 2 all the functions necessary for operation,
maintenance and servicing, including directly.
Note:
The display and operating elements are not freely accessible on
the LT 2 - 19”. For this reason the LT 2 - 19” is generally supplied
only with a 657 R 08 31 display and operating unit.
Warning /
Fault
display
Maintenance
switch
Operating
mode
display
Multifunctionkey
Display- and operating elements on processor card
5.1.2 Monitor output
The monitor output [terminals 31 (-), 32 (+)] make it possible to connect
(e.g.) a multimeter. The following values can be interrogated on site via the
LT 2's monitor output:
- O 2 measured value
- Probe voltage [U s]
- The measuring cell's AC internal resistance [R I]
DIP switch processor card
SW 1
SW 2
Monitor output function
open
open
O 2 measured value
0…2,5 V ^ 0…25 Vol.% O 2
connected
open
Probe voltage
0…2,5 V ^ 0…250 mV
open
connected
Cell internal resistance
0…2,5 V ^ 0…250 W
1
Input resistance of the connected meter greater than 10 k W
43
5. Commissioning/shutdown
Preliminary works
5.1.3 Display and operating elements
LED 7
LED 3
LED 2
LED 1
T2
S1
LED 9
LED 8
LED 5
LED 4
- Operation (lights up)
LED 11
Operational status display (green) LED 5
LED 10
LED 1
LED 6
LED 7
LED 2
LED 12
LED 8
LED 4
LED 3
T2
S1
LED 9
LED 6
LED 5
LED 10
LED 12
LED 2
LED 1
LED 11
LED 7
T2
S1
LED 8
LED 4
LED 3
LED 5
LED 9
LED 11
LED 6
LED 10
LED 12
Operational display (green) LED 6
Maintenance switch S 1
- Measurement (lights up)
- Calibration (flashes)
- Offset compensation (flashes slowly)
- With test gas / comparative measurement (flashes rapidly)
LED 8
LED 7
LED 4
LED 3
LED 2
LED 1
T2
S1
LED 9
LED 6
LED 5
LED 10
LED 12
LED 1 1
T2
S1
LED 2
LED 1
LED 3
LED 7
LED 9
LED 5
LED 4
LED 8
LED 10
LED 6
LED 11
LED 12
- Maintenance mode
off
Maintenance (orange) LED 1
- Maintenance mode
on
T2
S1
LED 2
LED 1
LED 3
LED 8
LED 9
LED 5
LED 4
LED 7
LED 11
LED 6
LED 10
LED 12
Warning/
fault display (red) LED 12
- Maintenance mode active (lights up)
- Normal operation (off)
- No warning / fault
- At least one warning present (lights up)
- At least one fault present (flashes)
Multifunction key T 2
i
NOTE:
Function
Toggle the displayed warning/
fault
Key operation
Press briefly
Reset the displayed
warning/fault
Press for longer than 3 sec *
Rapid start-up of the measured
gas pump, abort cold-start
Press for longer than 3 sec **
Trigger an offset calibration
or test gas calibration
Press key for longer than
3 sec during measurement **
*
Some warnings and faults cannot be reset if the error is still
present or
the routine is still running.
** If at least one warning or fault is still present, the key must be
pressed for longer than 6 seconds.
44
5. Commissioning/shutdown
5.1.4 Display and operating unit
657 R0831 (optional)
(in LT 2 - 19”
type 657 R 1040 - R 1049,
included in the standard
version supplied)
Preliminary works
Display and operating unit
Service and diagnostic software
Cursor
keys
LAMBDA TRANSMITTER LT2
Measure
O2-measured value [vol.%]
21.0
ENTER
meas
cal
par
diag
LAMTEC
Menu keys
ENTER
key
For details see separate publication DLT 2002.99
5.1.5 Service and diagnostic
software (optional)
5.1.6 Wiring
inspection
Suitable for all PCs with RS 232 or RS 422 interface from
Windows 95, Windows NT (32-bit version) onward
In preparation
Warning:
When working on any electric facilities, disconnect
them from the supply and check for zero voltage. The
relevant safety regulations must be observed at all
times.
As per wiring diagrams in the Appendix, pages 70-72.
45
5. Commissioning/shutdown
Factory settings
5.2 Factory settings
5.2.1 Plug configuration
D see Appendix, pages 74-75
5.2.2 Instrument configuration
(unless otherwise specified in the order)
Measuring range:
Resolution:
Probe temperature:
(Parameter 141)
Analogue output 1:
über Parameter 531
Load:
0...30 vol.% O 2
0,1 vol.% O 2 im Bereich von 0...18 vol.% O 2
1 vol.% O 2 im Bereich über 18 vol.% O 2
1000 K
4...20 mA ^ 0...10 vol.% O 2
0...20 mA einstellbar
0...600 W
- Measurement span can be freely configured via the parameters 532
and 533
0…20 mA / 4…20 mA toggled via the parameter 531
- Relay outputs
Idle current principle
Relay output 1:
Relay output 2:
Relay output 3:
Relay output 4:
Relay output 5:
Relay output 6:
Relay output 7:
Collecting fault message
Warning and maintenance
Measurement
Boundary value 1
Boundary value 2
Boundary value 3
Boundary value 4
- Boundary values
Boundary value 1:
Boundary value 2:
Boundary value 3:
Boundary value 4:
Switched off
Switched off
Not used
< -5 mV, value smaller than threshold
Reset mode "automatic”
(for monitoring the probe; air value)
- Digital inputs
Input 1:
Input 2:
Input 3:
Input 4…8:
- RS 232 interface
46
Reset fault/warning
Reset boundary value messages
Fuel 2 (gas)
Parameter 836 - service level must be present at
digital inputs.
Without signal specification heating oil EL
Not configured
Instrument address 1
9600 baud
Parity none
5. Commissioning/shutdown
Start-up
- Mount the gas extraction device on the probe and tighten.
5.3 Measurement start-up
ATTENTION:
!
When installing the probe and during later operation,
ensure that the probe does not into contact with oils,
grease or boiler cleaning materials. This applies not
just to the cell, but also the connector region!
The thread and the clamping ring should be treated
with mounting paste type 655 R 1090 against seizing.
Poisoned or contaminated probes can be identified by
an air voltage of -20…-30 mV. In addition, the probe
must always be in operation when installed. This avoids
the precipitation of moisture on the measuring cell,
which in certain cases could lead to erroneous
measurements and to the probe's destruction!
LED 7
LED 8
LED 10
LED 9
LED 11
LED 12
- Connect the probe but do not install it
Switch to Maintenance
either via the display and operating unit under "diag” or via the maintenance
switch S1
T2
S1
LED 1
LED 2
LED 4
LED 3
LED 5
LED 6
i
Maintenance (orange) LED 1
Note:
The maintenance switch always has priority.
- Switch on voltage
- Maintenance mode active
- "Maintenance” is shown
- Normal operation
- Probe warms up
- Cold-start is shown
LED 6 "Operation” lights up
LED 5 "Measurement is off
T he measurement function is operational after 10 minutes.
Maintenance switch S 1
- Maintenance
mode off
- Maintenancemode on
i
NOTE:
The cold-start delay can be activated from the display and operating unit
D "cal” key. Proceed as prompted by the menu, or it can be interrupted by
pressing the multifunction key T2 (for longer than 3 seconds, or if a
warning or a fault is still present, for longer than 6 seconds).
LED 8
LED 7
LED 10
LED 9
LED 11
LED 12
Function
Key operation
T2
S1
LED 2
LED 1
LED 4
LED 3
LED 5
LED 6
Toggle the displayed
warning/fault
Press briefly
Reset the displayed
Warnung / Störung
Press for longer than 3 sec *
Abort the cold-start
Press for longer than 3 sec **
Trigger an offset
calibration
Press key for longer than
3 sec during measurement **
Operational display (green) LED 6
- Operation
*
**
Some warnings and faults cannot be reset if the error is still present
or the routine is still running.
If at least one warning or fault is still present, the key must be pressed for
longer than 6 seconds.
47
5. Commissioning/shutdown
Start-up
- Reading off probe voltage:
either via display and operating unit
(if available) D press "meas”, or the monitor output.
LED 2
LED 1
- Carry out offset compensation
either via display and operating unit under "cal” or the multifunction key.
T2
S1
LED 8
LED 4
LED 3
LED 7
LED 10
LED 6
LED 5
LED 9
LED 12
LED 11
After a heating-up phase of 3-5 minutes, probe voltage stabilises at a
value between -5 and -15 mV and the AC internal resistance at a value
below 100 W (in a new probe below 50 W ). If positive values are
displayed in air, the probe has been connected in reverse. Swap the
probe connecting terminals 33 / 34.
Multifunction key T 2
NOTE:
Function
Key operation
Toggle the displayed
warning/fault
Press briefly
Reset the displayed
warning/fault
Press for longer than 3 sec *
Abort the cold-start
Press for longer than 3 sec **
Trigger an offset
calibration
Press key for longer than
3 sec during measurement **
*
**
Some warnings and faults cannot be reset if the error is still present
or the routine is still running.
If at least one warning or fault is still present, the key must be pressed for
longer than 6 seconds.
- Wait until the offset compensation is completed (flashing stops).
- Enter the probe temperature from the test protocol (see page 50),
parameter 141
"Customer release level”; see separate operating instructions
either via
- display and operating unit
- s ervice and diagnostic software
(optional)
i
48
HINWEIS:
"Probe temperature T”
The LT 2 Lambda transmitter and the LS 2 Lambda probe
are not adjusted to each other. The LS 2 Lambda probe is
subject to certain manufacturing deviations, which can be
compensated for via the offset compensation and the
probe's temperature. Probe calibration with a test gas is not
required. The probe temperature obtained during final
testing can be derived from the test protocol enclosed with
each probe, see page 50.
5. Commissioning/shutdown
Start-up
Probe installation
- Install the robe in the SEA and align the MEV, see illustration:
Diagram: Probe installation
Welded
Flue gases
Rating plate
Probe installation fitting
(SEA) type 655 R 1010
Flue gases
Gas extraction
device (MEV)
type 655 R 1001…1004
- Start up combustion
- Measured value plausible?
Check if necessary via comparative measurement
!
ATTENTION:
Almost all extractive O 2 meters measure "dry”, in contrast to the in-situ
ZrO 2 meters; i.e. moisture is extracted from the flue gas through a
purification process (cooler) or a chemical absorber (silica gel). This
reduces the volume of the measured gas, and thus the proportion of O 2
increases. This fact must be taken into account during comparative
measurement. A diagram for converting wet into dry measurements can
be found in the Appendix, page 81.
- If large deviations are present, it is possible to compensate for the
values obtained via
- the display and operating unit, under "cal”
- the service and diagnostic software
- as follows, using the multifunction key:
Measure the O 2 value at the monitor output or analogue output.
Start calibration with the multifunction key.
LED 5 should flash rapidly (see page 44).
Briefly pressing the multifunction key increases the output O2 value by
0.1% (pressing for a longer period reduces the O2 value; 0.1% in 2
seconds). If no operation follows within 15 seconds, the test gas calibration
is terminated.
!
ATTENTION:
Which instrument measures correctly?
Compensation should only be carried out if it was previously ascertained,
e.g. by using test gases, that the comparison instrument is measuring
correctly.
In any event, offset compensation should previously have been carried out
under operational (warm) conditions.
It is necessary to ensure that ambient air is present at the measurement site. If
this is not ensured, the probe must be dismantled again for the offset
49
5. Commissioning/shutdown
Start-up
Test protocol
Each probe is accompanied by a test protocol.
LS 2 Lambda probe
--- TEST PROTOCOL ---
probe no.:
860
Measured on : 23.04.96
Test site ; 6
File name : c:\Data\23049606.06H
Production batch:
566201
Apr 96
Offset in mV
At start = -12,35
At end = -12,21
Measurement 1: Heater characteristics
U heater
[Volt]
I heater
[Amps]
13.72
1.35
R heater
[Ohm]
P heater
[Watt]
10.16
18.54
Measurement 2 : AC internal resistance
Sensor stationary at 100 kHz
19.74
Calculated characteristic curve U = f (O 2)
________________________________
Step
O 2 sensor
U sensor
[%]
[mV]
________________________________
1
6.46
13.40
2
6.38
13.68
3
5.67
16.23
4
5.11
18.50
5
5.10
18.56
6
3.78
25.10
7
3.25
28.41
8
2.23
36.65
9
1.45
45.99
10
0.79
59.36
11
0.62
64.45
12
0.17
92.87
13
2.21
36.86
14
0.00
0.00
15
0.00
0.00
16
0.00
0.00
17
0.00
0.00
18
0.00
0.00
19
0.00
0.00
20
0.00
0.00
________________________________
D
50
[Ohm]
U = f ( O2 )
70.00
60.00
50.00
U Sensor [ mV ]
Ri-Sensor =
40.00
30.00
20.00
10.00
0.00
-10.00
-20.00
0.00
1.00 2.00 3.00 4.00 5.00 6.00 7.00 8.00
Calculated O2 [%]
Derived factors:
= 0,35 mV
Correction factor K2
Sensor temperature T calculated = 1026,43 Kelvin
Relative error at 5% O 2
= 0,75 %
9.00 10.00
5. Commissioning/shutdown
5.3 Setting up
service warnings
Shutdown
Service warnings 1 and 2 are designed to draw attention to regular
servicing. The service warnings can be freely defined by the operator, e.g.
Service warning 1
Service warning 2
D
D
Check probe
Dismantle and clean probe
The appropriate cycle times can be specified via the parameters 1260 and
1261 in the range 1 to 65535 hours.
5.4 Shutdown
In order to be sure to avoid damaging the LS 2 Lambda probe's ZrO 2
measuring element, the probe must be dismantled before the system is
shut down or immediately after the supply voltage is switched off.
!
ATTENTION:
Dismantle the Lambda probe before shutting down the measurement
system.
Caution: hot!
i
NOTE:
Once dismantled, the LS 2 Lambda probe can be stored indefinitely. The
irconium element is only consumed during operation (measuring cell at
operating temperature). This also applies where a probe has already been
used previously.
51
Controls/
measurement output
6. Operation
6.1 Controls/
m easurement output
- Display and operating unit (optional) is included as
standard in LT 2 - 19” for panel installation.
- Service and diagnostic software (optional).
- In part via multifunction key and monitor output
- External operating unit via LAMTEC system bus (in preparation).
6.1.1 Measurements
- O 2 actual value
0…30 vol.% O 2
Resolution: 0.1 vol.% O2 up to 18 vol.% O2
1 vol.% O2 above 18 vol.% O2
- Probe voltage
-100…+1250 mV
Resolution: 0.1 mV
- AC internal resistance of
the ZrO2 cell:
- Exhaust gas temperature
(optional)
- Combustion efficiency
(optional)
0…750 W
Resolution: better than 0.2 W
Displayed up to 999.9 W
0…320°C
Resolution: 1°C
Alternatively:
0…850°C
Resolution: better than 2°C
0…100%
Resolution: 0.1%
- Calculated CO2 concentration
(optional)
0…20 vol.%
Resolution: 0.1 vol.%
- CO/H2 concentration, shown
as COe [CO equivalent]
0…10.000 ppm
Resolution: variable 1…100 ppm
depending on measured value
Alternatively: 1% of measured value
not better than 1 ppm
- Customised values
6.1.2 Commands
52
Can be freely configured, e.g. exhaust gas
temperature, efficiency, CO2 concentration etc.
- Cold-start delay”
Abort "
Z
Directly during measurement
- Offset compensation
Z
Compensate probe to ambient air, 21 vol.% O2
- "Calibration”
Z
- "Fault/warning”
Z
Reset
- "Boundary values”
Z
Reset
Perform measured value compensation via
comparative measurement
Test calibration not provided
Controls/
measurement output
6. Operation
6.1.3 Status messages
-
Status message during calibration
- Offset
- Cal Gas
6.1.3.1 Warnings
6.1.3.2 Faults
Measurement
Calibration offset ["Cal - offs”]
Calibration ["Cal - gas”]
Maintenance
Cold-start
Probe heating active
Measurement / no measurement
At least one warning active
At least one fault active
Warning no.:
1
2
9
10
12
19
20
21
22
23
24
25
26
27
LS 2 internal resistance too high
LS 2 offset voltage to air invalid
LS 2 probe pressure too high / low
LS 2 probe temperature too high / low
LS 2 temperature def.
Analogue input 1: input value too large / small
Analogue input 2: input value too large / small
Analogue input 3: input value too large / small
Analogue input 4: input value too large / small
Configuration error, analogue outputs
Service warning 1
Service warning 2
No LS 2 probe dynamics
Dynamic test triggered
Fault no.
1
2
5
9
11
Probe voltage < -20mV
LS 2 probe heating faulty
Probe wire break / probe faulty
No LS 2 probe dynamics
Fault analogue outputs
6.1.4 Operational parameters -
Downward counter, cold-start delay
- Clock time, date
- Operating hours counter
53
Practical operating notes
6. Operation
6.2
Practical operating
notes
6.2.1 Measurements during
pronounced
pressure surges at
the measuring site
i
6.2.2 Interruptions,
switching on and off
If the display jumps badly, damping can be increased via the (optional)
display and operating unit and the service and diagnostic software (i.e. by
increasing the integration's time-constant); this steadies the display:
parameter 360 - Operational release level. However, this slows down
the display in terms of reaching an end state.
NOTE:
Large damping simultaneously leads to an artificial slowing down of the
measurement signal.
In the event of long interruptions during operation, lasting for longer than
ca. 3 months, it is recommended to switch off the measuring system. The
probe should be dismantled to avoid damage.
Es wird empfohlen, bei kurzen Betriebsunterbrechungen die Messung auf
jeden Fall weiterlaufen zu lassen.
54
Checking the probe
7. Service and maintenance
7 Checking the probe
7.1 Checking the
LS 2 Lambda probe
7.1.1 Checking the air
voltage
LED 2
LED 1
T2
S1
LED 8
LED 7
LED 4
LED 3
LED 5
LED 10
LED 11
LED 6
LED 9
LED 12
the T2 multifunction key
i
- Switch off the facility
- Pre-ventilate, until no more flue gas is present at the measurement site
(ca. 1 minute).
- Turn off the pre-ventilation.
- Carry out offset calibration
either via
- the (optional) display and operating unit
via "cal” - menu-driven
- the (optional) service and diagnostic software
- T2 multifunction key
NOTE:
Function
Key operation
Toggle the displayed
warning/fault
Press briefly
Reset the displayed
warning/fault
Press for longer than 3 sec *
Abort the cold-start
Press for longer than 3 sec **
Trigger an
offset compensation
Press key for longer than
3 sec during measurement **
* Some warnings and faults cannot be reset if the error is still present or
the routine is still running.
**If at least one warning or fault is still present, the key must be pressed
for longer than 6 seconds.
If probe voltage is outside the permissible range, the warning "Offset
calibration to air invalid” is output.
- Read out probe voltage at LT 2
either via
- the (optional) display and operating unit
- the (optional) service and diagnostic software
- measure probe voltage with a multimeter; see page 57
- Permissible range: 0 mV … -20 mV
- If the probe is outside this range
!
Z replace probe.
ATTENTION: Do not forget!
After replacing the probe, carry out new offset compensation to air
and enter the new probe temperature value.
55
Checking the probe
7. Service and maintenance
The boundary values 3 and 4 are so set at the factory that automatic
checking of the probe is possible during standstill and during the facility's
pre-ventilation.
No boundary value addressed!
Boundary value 3 Z - 5 mV
Boundary value 4 Z -20 mV
exceeded - automatic reset
below threshold manual reset D "Acknowledge”
Boundary value 4 must never be addressed in an intact probe.
If boundary value 4 is addressed, it must be reset manually.
i
NOTE:
After supply voltage failure (and thus also that of the
probe's heating), probe voltage may fall below -20 mV for a
brief period during reheating.
It is recommended to retain the factory-set boundary value 4 for safety
reasons.
If the facility cannot be switched off, the probe must be dismantled for
examination.
7.1.2 Checking by
counter-measurement
i
Precise checking of the measurements is only possible through countermeasurement with a 2nd probe, or by comparing the values measured after
probe replacement.
NOTE:
During counter-measurement, check whether the
instrument being used measures wet or dry. Those with an
advance gas cooler are always used for dry measurement.
This also applies to instruments that extract moisture via a
chemical compound.
The LS 2 Lambda probe measures wet. The difference
between wet and dry measurements can be obtained from the
diagram in the Appendix (see page 81).
- If large deviations are present, it is possible to compensate for the
values obtained via
- the display and operating unit, under "cal”
- the service and diagnostic software
- as follows, using the multifunction key:
Measure the O2 value at the monitor output or analogue output.
Start calibration with the multifunction key.
LED 5 should flash rapidly (see page 44).
Briefly pressing the multifunction key increases the output O2 value by 0.1%
(pressing for a longer period reduces the O2 value; 0.1% in 2 seconds). If
no operation follows within 15 seconds, the test gas calibration is
terminated.
!
56
ATTENTION:
Which instrument measures correctly?
Compensation should only be carried out if it was previously ascertained,
e.g. by using test gases, that the comparison instrument is measuring
correctly.
Checking the LT 2
Maintenance
7. Service and maintenance
7.2 Checking the LT 2
Connect a digital voltmeter between terminals 33 (-) and 34 (+), in parallel
to the probe. Compare the measured voltage with the probe voltage
displayed (Us).
Range: -20 mV … +300 mV.
7.2.1 Checking the
LT 2's measuring input
If the difference is less than 1 mV, the LT 2 is operating correctly.
!
If the difference exceeds 1 mV, repeat the above step with another digital
voltmeter.
ATTENTION!
Check the accuracy of the digital voltmeter used.
If the difference persists
Z
exchange the instrument.
Only possible with an LS 2 probe simulator, item no. 655 R 1030.
Connect the probe simulator between terminals 33 (-) and 34 (+).
7.2.2 Checking the probe's
internal resistance
measurement
With a potentiometer, set an internal resistance < 200 W at R I probe.
Use a voltmeter as follows to check the internal resistance:
Measure AC voltage between terminals 33 (-) and 34 (+).
The displayed value in mV ^ corresponds to about one half of the probe's
internal resistance.
If RI > 200 W, the following warning is output after 10 seconds:
"LS 2 internal resistance too high”.
If RI > 300 W, the following fault message is output:
"Probe wire break / probe faulty”.
Example: 150 W ^ 75 mV.
i
NOTE:
The probe's internal resistance monitor is deactivated
during a cold-start.
7.3 Maintenance
Check the measurement system on a monthly, quarterly or semi-annual
basis, depending on the application.
7.3.1 Consumables
LS 2 Lambda probe
Mean lifetime 2-3 years (depending on fuel).
57
Faults
8. Fault analysis/repairing faults
Messages in plain text. See also 6.1.3, page 53.
Via (optional) display and operating unit, under "diag”
via service and diagnostic software, under "status”
via LAMTEC system bus at an external operating unit.
Message via LED row, LED 7 to 12, on LT 2's processor board (see 8.1; 8.2).
8. Faults/warnings
If several faults/warnings are present, they can be called up in sequence
by activating the T2 multifunction key.
Message via LED row, LED 7 to 12, LED 12 flashes.
8.1 Faults
Faults (flashing)
12 11 10 9
8 7
LED 7
LED 9
LED 8
LED 10
LED 12
LED 11
No warnings/faults active
Probe faulty
Probe heating faulty
58
T2
S1
LED 1
LED 3
LED 2
LED 4
LED 6
LED 5
Display of active
faults (red), flashing.
Probe wire break
Warnings
8. Fault analysis/repairing faults
Message via LED row, LED 7 to 12, LED 12 lights up.
8.2 Warnings
LED 8
LED 7
LED 10
LED 9
LED 12
LED 11
Faults (LEDs on)
LED
12 11 10 9 8 7
No warnings/faults active
LS 2 internal resistance too high
T2
S1
LED 2
LED 1
LED 4
LED 3
LED 6
LED 5
Offset voltage to air invalid
Analogue input 1: input value too large / small
Display of active
warnings (red),
LED(s) permanently on.
Analogue input 2: input value too large / small
Analogue input 3: input value too large / small
Analogue input 4: input value too large / small
Service warning 1
Service warning 2
8.3 Resetting
faults/warnings
1
No LS 2 probe dynamics
1
Dynamic test triggered
Via (optional) display and operating unit, via "diag”, menu-driven
Via service and diagnostic software, via "status”, menu-driven
Via external operating unit, via LAMTEC system bus
Via digital inputs - input 1
By pressing the T2 multifunction key
(for longer than 3 seconds per fault).
If several faults are present simultaneously,
the multifunction key must be pressed several times.
(1)
Only relevant in conjunction with an integrated O2 control system.
Without an integrated O2 control system the dynamics test should remain
switched off D parameter 1330 D "0”
59
Faults
Causes and solutions
8. Fault analysis/repairing faults
8.3 Faults
Causes and solutions
This message is output if the AC internal resistance (RI) or the ZrO2 cell exceed
the permissible limit of 300 W during operation. Generally, this message is
accompanied or preceded by the warning "LS 2 internal resistance too high”.
8.3.1 "Probe wire-break” /
defective probe
Possible causes:
- The plug carrying the probe's signal has been pulled out.
- Wobbly contact D check the terminals, tighten
- Check the wiring
8.3.2 "Defective LS 2
probe heating”
i
NOTE:
In 99% of cases, the LS 2 Lambda probe was not connected properly during
operation (the probe heating plug had been pulled out).
Reset the fault, either via the multifunction key or via the display and operating
unit etc. A fault is only present if the fault cannot be reset.
Possible causes:
- Check fuse F 5, see page 76
Check the probe's heater. In an intact heater, ca. 10 W / 9…11 W should be
measured between the probe plug's two pins (identified by the two white
wires). If not, (R D T) D heater faulty - replace probe.
If intact, check the supply voltage: the probe's heater must be supplied with
ca. 13 V DC, cyclically reversed; if not, check the wiring and the terminals and
tighten if necessary.
i
i
i
i
60
NOTE:
The current heating data can be read out from operating parameters 41/42/43.
- Probe +/- reversed
- Probe poisoned
8.3.3 Probe voltage too low
8.3.4 O2 value incorrect
NOTE:
The probe is heated with direct current at ca. 13 V, cyclically reversed. Hence
the use of a multimeter to measure it is somewhat difficult.
Z
Z
swap probe terminals 33-34 around
replace
NOTE:
Probe voltage to air 0 to -20 mV.
If a control measurement results in a different O2 value than the one displayed:
- Has the relationship between wet/dry measurement been taken into
account?
See diagram in the Appendix, page 81.
- Check LT 2, see 7.2, page 57.
- Replace LS 2 Lambda probe.
- Commission the new probe as described in 5.3.
NOTE:
During counter-measurement, check whether the instrument being used
measures wet or dry. Those with an advance gas cooler are always used for
dry measurement. This also applies to instruments that extract moisture via a
chemical compound. The LS 2 Lambda probe measures wet. The difference
between wet and dry measurements can be obtained from the diagram in the
Appendix (see page 81).
Faults
Causes and solutions
8. Fault analysis/repairing faults
8.3.5 Internal electronics
faults
In the event of an internal fault, the top row of LEDs (LED 7 … LED 12)
flashes rapidly.
The bottom row shows the number of the relevant fault.
LED
6 5 4
3
2 1
Internal fault code
LED 7
LED 8
LED 9
LED 10
LED 12
LED11
T2
S1
LED 1
LED 2
LED 3
LED 4
LED 6
LED 5
0:
Run-time monitoring
1:
EEPROM parameter destroyed
2:
EEPROM cannot be corrected
3:
Internal program error
4:
EEPROM parameter destroyed
5:
EEPROM cannot be corrected
6:
Too many EEPROM errors
7:
EPROM CRC16 error
8:
Division by zero error
9:
Interrupt error
10:
Internal program error
11:
Not used
= LED flashes
= LED off
The number of the internal fault can be calculated from the
following formula:
Internal fault =
LED 1 +2  LED 2 +4  LED 3 +8  LED 4 +16  LED 5 +32  LED 6
where LED 1 … 6 should be replaced by 1 if the LED flashes, otherwise by 0.
i
NOTE:
If you are unable to rectify the fault yourself, please work out the internal fault
number using the above formula and contact the manufacturer.
61
Faults
Causes and solutions
8. Fault analysis/repairing faults
The following table lists the steps which should be taken if an internal fault
occurs:
Internal fault code
Steps to take
0:
Run-time monitoring
Notify the manufacturer, if possible
with exact details of the circumstances.
1:
EEPROM parameter
destroyed
Program default parameters, check that
the EEPROM is properly located in its
socket, replace EEPROM, replace
processor card.
2: EEPROM cannot be
corrected
Check that the EEPROM is properly
located in its socket, replace EEPROM
and program default parameters,
replace processor card.
As 0
3:
Internal program error
4:
EEPROM parameter
destroyed
As 1
5:
EEPROM cannot be
corrected
As 2
6:
Too many EEPROM errors
As 2, possibly also software error
7:
Flash CRC16 error
Reprogram the Flash
Replace processor card
8:
Division by zero error
Meaningless parameters may have
been set, otherwise as 0
9:
Interrupt error
As 0
10: Internal program error
As 0
11: Not used
Programming the default parameters:
LED 11
LED 10
LED 9
LED 8
LED 7
LED 6
LED 5
LED 4
LED 3
LED 2
LED 1
T2
S1
LED 12
Maintenance switch S1
Multifunction switch T2
!
62
- Switch the instrument off
- Switch on bridge SW 1, SW 2, SW 3 on the processor card; 1
see illustration.
- Switch maintenance switch S1 to the maintenance position
- Keep multifunction switch T2 pressed and switch the instrument on
- LED 1 (Maintenance) flashes during the write procedure; all others
- All the LEDs flash once the write procedure is completed
- Switch the instrument off, restore BR 2, BR 3 and BR 4 to their original
position and switch the instrument back on.
ATTENTION!
Only program the default parameters if absolutely necessary and after
consulting the manufacturer.
After programming the default parameters (factory parameters), all the
customised settings are lost and must be restored via the (optional) display
and operating unit or the (optional) service and diagnostic software. Some
parameters may be at factory level and can only be set by the manufacturer. In
case of doubt, inform the manufacturer.
8. Fault analysis/repairing faults
Warnings
Causes and solutions
8.4 Warnings
Causes and solutions
Generally speaking, warnings do not affect the measurement functions.
8.4.1 LS 2 internal
resistance too high
This message is output if the AC internal resistance (RI) of the ZrO2 cell
exceeds the permissible limit of 200 W during operation.
Possible cause:
Probe aged (worn out) Z Obtain a spare probe and replace.
Measurement can continue, using caution. Check accuracy by
counter-measurement, see 7.1.2, page 56.
- Check fuses F2, see Appendix, page 76
- Fault in supply section electronics Z replace
Check LT 2 electronics:
Measure the AC voltage across LT 2 terminals 33-34, using a multimeter.
The result in mV corresponds appx. to half the AC internal resistance.
8.4.2 Offset voltage to air invalid
The voltage determined during offset compensation is not permissible.
Check whether probe is in air.
If yes - check probe voltage to air.
Permissible voltage range 0 … -20 mV.
8.4.3 Analogue inputs 1/2/3/4
Input value
too large/too small
The input value at the relevant analogue input is outside the permissible
range.
Limits: Check parameters 574/584/594/604 (min. value) and
575/585/595/605 (max. value).
The current input value can be output via parameter 570/580/590/600.
Steps to take:
- Check wiring Z poles reversed?
- Check source (connected instrument)
8.4.4 Configuration error
at analogue outputs
Parameters have been set for analogue outputs not physically found. Check
parameters 539, 549, 559, 569 and 530, 540, 550, 560 and compare with the
fitted cards.
If necessary, replace the analogue output cards and/or processor card.
8.4.5 Service warning 1/
service warning 2
The service warnings are designed to draw attention to regular servicing.
The service warnings can be freely defined by the operator, e.g.
Service warning 1 Z Check probe
Service warning 2 Z Dismantle and clean probe
The appropriate cycle times can be freely configured via the
parameters 1260 and 1261.
63
9. Spare parts
The following is a list of relevant spare parts.
It is recommended to maintain a stock of the spares marked *.
Spares marked with the footnote (1) should be kept if considered appropriate.
Spares marked with the footnote (2) should be kept only if the system is
equipped with the relevant option.
Consumables:
* 1 LS 2 Lambda probe
Mean lifetime ca. 10,000 - 20,000 operating hours (depending on fuel)
without Gas extraction Device (MEV)
Type 6 50 R 1000
Spares:
* 1 Gas extraction Device (MEV),
e.g. 300 mm long,
Type 6 55 R 1002
For standard lengths see price lists
* 1 Clamping ring for SEA 655 R 1010
(5-pack)
Type 6 50 R 1013
* 1 1 mounting paste for LS 2
(5-pack)
Type 6 50 R 1090
* 1 Probe installation fitting
for LS 2
Type 6 50 R 1010
* 1 Spare plug set for LS 2
Type 6 50 R1002
64
(1)
1 Spare power electronics (full version)
Type 6 57 R 1882
(1)
1 Spare computer electronics
Type 6 57 R 0874
(1)
1 LT 2 supply section (transformer)
Type 6 57 R 0342
(2)
1 Analogue output card 0/4 … 20 mA; 0 … 10 V (1 channel)
Type 6 57 R 0050
(2)
1 Analogue output card 0/4 … 20 mA; 0 … 10 V, floating
Max. potential difference ±20 V
Type 6 57 R 0051
(2)
1 Analogue input card Potentiometer 1…5 kW
Type 6 57 R 6000
(2)
1 Analogue input card 0/4 … 20 mA
Type 6 63 R 6001
(2)
1 Analogue input card 0/4 … 20 mA
with 24 VDC supply to transducer
Type 6 63 R 6002
(2)
1 Temperature input for PT 100
Type 6 57 R 0890
(2)
1 Temperature sensor PT 100, 250 mm long
Type 6 57 R 0891
9. Spare parts
(2)
1 Relay card for digital outputs, 6 relays, 1 switcher each
Type 6 60 R 0017
(2)
1 Relay card for digital outputs, 3 relays, 2 switchers each
Type 660 R 0012
(2)
1 Probe junction box (SAK)
Type 6 55 R 1025
65
Technical data
LT 2 Lambda transmitter
10. Appendix
Version:
Wall-mounted housing
Panel installation housing
Housing:
Housing in sheet steel,
powder-coated
3 HE / 50 TE,
control panel housing in 19” technology
Safety class, DIN 40050
IP54
IP 20
Front panel IP 40
Dimensions (h x w x d), mm
400 x 300 x 200
173 x 310 x 270
Colour
Grey RAL 7032
Metallic silver (alum. anodised),
control elements grey
Weight
plus
display and operating unit
ca. 10 kg
ca. 5 kg
ca. 0.5 kg
Ambient temperature:
Operation
-20°C … +60°C
Transport and storage
-40°C … +85°C
Auxiliary voltage:
230 V AC and 115 V AC
+10% / -15%, 48 Hz … 62 Hz
Power consumption:
Typically 50 VA, short-term 150 VA (probe heating-up phase)
Display:
LCD graphic display 100 x 80 mm (w x h)
in LT 2 wall-mounted housing type 6 57 R 1020_R 1029 optional
Display and operating unit 6 57 R 0831
Resolution:
0.1 vol.% O in the range 0…18 vol.%O
1 vol.% O in the range 18…30 vol.%O
2
2
Measuring accuracy:
(with LS 2 Lambda probe)
Settling time (90% time):
Time for operational status
to be achieved with LS 2:
66
+/- 10% of measured value
not better than +/- 0.5 vol.% O
T 90 < 15 s
Ca. 10 minutes after "SUPPLY ON”
2
2
2
Technical data
LT 2 Lambda transmitter
10. Appendix
Analogue outputs:
Monitor output
Accuracy
Factory settings
0…2.55 V DC, load > 10 kW, < 100 nF
2% of measured value, not better than 0.2 vol.% O
0…2.55 V DC < 0…25.5 vol.% O
Can be switched via jumpers to
Probe voltage Us
Us 0…255 mV DC ^ 0…2.55 V
2
2
Probe (cell)
internal resistance RI
1…4 current/voltage
outputs
1 standard 2…4 optional
0…255 W ^ 0…2.55 V
- DC current
0/4…20 mA
Load 0…600 W
- DC voltage
Load
0…10 V
> 10 kW
not floating (potential isolation optional)
Accuracy:
0.5% of measured value, not better than 0.1 vol.% O2
Resolution:
0.1 vol.% O2
Measurement range and physical quantity can be configured
Factory settings:
0…10 vol.% O ^ 0…20 mA
Analogue inputs:
Optional 1…4
via mini plug-in card to LT 2 supply section electronics
2
- Analogue input card
LT1/LT2 Potentiometer 1…5 kW
Type 6 57 R 6000
- Analogue input card 0/4 … 20 mA
Type 6 63 R 6001
- Analogue input card 0/4 … 20 mA
with 24 VDC supply to transducer
Type 6 57 R 6002
- Temperature input for PT 100 sensor
657 R 0890
Control elements:
Wall-mounted housing
19” panel installation
Multifunction key,
maintenance key and
2 LED rows of 6 LEDs each.
Display and operating unit
with LCD graphic display
available as option.
Display and operating unit
with LCD graphic display
Interfaces:
LAMTEC system bus, either RS 422 with floating potential,
or RS 232 only in conjun. with interface module 6 63 P 0500
BUS links:
Optional for the systems
Profibus DP (Siemens)
Interbus-S (Phoenix)
SUCOnet-K (Klöckner - Möller)
Modbus
CANopen
consisting of:
BUS card
6 63 P 0400
BUS interface
6 63 R 0301
67
Technical data
LT 2 Lambda transmitter
10. Appendix
Digital outputs:
1 standard + 6 optional
1 relay output
0…230 V AC, 4A
Collection error message 0 … 48 V DC, 3A
Optional:
Relay card with 6 relays (1 switcher)
Switching capability
0…230 V AC, 4A
0 … 48 V DC, 3A
660 R 0017
or:
Relay card with 3 relays (2 switchers)
Switching capability
0…230 V AC, 4A
0 … 48 V DC, 3A
660 R 0012
Can be freely configured for operational, status and boundary value
messages.
Digital inputs:
8 inputs - can be freely configured
Factory settings: 24 V DC, referenced to instrument potential
Can be switched via jumper to floating potential, for external voltage source.
Cold-start delay
Automatic cold-start delay
10 mins.
Conforms to the
following European Directives:
89 / 336 / EEC Electromagnetic compliance
73 / 23 / EEC
68
Electric equipment within
certain voltage limits
Technical data
LT 2 Lambda probe
10. Appendix
0…18 vol.% O2
with restriction 0…21 vol.% O2
Measurement range
Measurement accuracy
+/- 10% of measured value
not better than +/- 0.5 vol.%
Effect of measured gas pressure
-1.6 mV / 100 mbar change
Permissible fuels
Residue-free gaseous
hydrocarbons and light heating oil
Permissible constant exhaust
gas temperature
Useful life
< 300°C
> 2 years
with heating oil EL and natural gas
Probe output voltage
0.01 to 12 vol.% O2
150…0 mV
Probe internal resistance RI
in air 20°C and 13 V heating
voltage
< 150 W
Probe voltage in air 20°C when
new and 13 V heating voltage
-5…-15 mV
Supply voltage at plug
11…16 V DC; polarity cyclically reversed
Heat output at 13 V, steady state
ca. 18 W
Heating current at 13 V,
steady state
ca. 1.4 A
Isolation resistance between
heating and probe connections > 30 MW
69
Electric connections
10. Appendix
Lambda Transmitter LT 2
Analogue outputs
0/4...20 mA
0/2...10 V
(option)
* on processor
printed circuit
board
(+)
* Module 4 (-)
49
48
Output 4
Analogue output card
Not potential-free, 6 63 R 7000
47
46
Output 3
45
44
Output 2
43
42
Analogue output card, potential-free
Maximum possible potential
difference +20 V
(Only possible with outputs 1 and 2)
6 63 R 7001
Output 1
32
31
For example, for connection of a multimeter
for service purposes Ri > 10 k W
Measure
ment
card 4
26
25
24
23
Measure
ment
card 3
22
21
20
19
5V/24 V DC voltage supply for transducer*
+ Signal input
- Signal input
GND
5V/24 V DC voltage supply for transducer*
+ Signal input
- Signal input
GND
Measure
ment
card 2
18
17
16
15
Measure
ment
card 1
14
13
12
11
(+)
* Module 3 (-)
(+)
* Module 2 (-)
(+)
* Module 1 (-)
Monitor output
0...2.5 V DC
Switch-over between
O2, US (only > 0 mV)
Analogue
measurement inputs
standard signals
0/4...20 mA
0...10 V
temperature,
pressure
Combination
Probe KS 1,
etc.
(option)
(+)
(-)
Relay output 1
0... 42 V DC, 3 A
0...230 V AC, 2 A
(1)
F 1 T1A / 250 G [230 V]
T2A / 250 G [115 V]
On
5V/24 V DC voltage supply for transducer*
+ Signal input
- Signal input
GND
5V/24 V DC voltage supply for transducer*
+ Signal input
- Signal input
GND
3
2
1
For example, combined fault indication
(configurable as required)
Manufacturer's setting: quiescent
current principle
PE
= Earth
N
L
= Neutral conductor
= Phase 230 / 115 V, 48...62 Hz
Line power consumption typically 50 VA
Short-term (probe heating phase) ca. 150 VA
* Other levels/signal inputs possible, depending on meas. card.
Max. 2 of these floating (meas. card 1 and 2); max. possible potential difference ±20 V.
(1)
70
Only in type 6 57 R 0020 - 6 57 R 0029
Wall-mounted housing IP 54
Electric connections
10. Appendix
Lambda-Transmitter LT 2
RS 422
LAMTEC system bus
(CAN-BUS)
75
74
73
72
71
T X D (-)
T X D (+)
R X D (+)
R X D ( -)
GND
CAN low
CAN high
free
free
GND/screen
69
68
67
66
65
64
63
62
61
60
Input
Input
Input
Input
Input
Input
Input
Input
GND
36
Probe heating
35
Probe heating
(+)
34
Probe signal plus (black)
(-)
33
Probe signal minus (grey)
RS 422 / LAMTEC system bus
(floating potential)
Digital inputs
24 V, ca. 6 mA
Bridge BR 106, BR 107 on
power electronics
1-2
referenced to
(bottom) - instrument potential
2-3
floating potential for
(top)
- external voltage source
+24 V
Probe connection
LS 2 or KS 1
8
7
6
5
4
3
2
1
+
24 V DC
Observe cable cross-section
below 20 m = 1.5 sq. mm.
up to 40 m = 2.5 sq. mm.
SAK-Connection
655 R 1025
-
1
+
2
Probe signal
-
(grey)
Probe signal
(black)
3
* 13 VDC
4
Socket for interface
module, 25 pins
Probe heating
Interface module
RS 232
RS 422
Only in conjunction with
service and diagnostic software
- 6 57 R 0100
- 6 63 P 0500
71
Electric connections
10. Appendix
Analogue inputs terminal 11 to 26
Example
Lambda - Transmitter LT 2
Analogue
measurement
inputs
standard signals
0/4...20 mA
0...10 V
temperature,
pressure
Combination
Probe KS 1,
etc.
(option)
Measurement
card 4
657 R 0890
26
25
24
23
Measurement
card 3
657 R 6000
22
21
20
19
Measurement
card 2
663 R 6002
Measurement
card 1
663 R 6001
+1 8
via
PT 100
Measurement
element
no
connection
Potentiometer 1...5 kW
+24 V
-1 7
16
15
two wire transductor
0/4...20 mA
with 24 VDC supply
14
+1 3
Powered current
source 0/4...20 mA
-1 2
11
Relay-Module for digital outputs
(option)
Lambda - Transmitter LT 2
Relay module 660 R0017
Terminal strip x2
Relay
outputs
2-7
max. 230 VAC
4A
72
d6
18
16 output 7
17
d5
15
13 output 6
14
d4
12
10 output 5
11
d3
9
7 output 4
8
d2
6
4 output 3
5
d1
3
1 output 2
2
alternatively: Relay-Module
660 R 0012
d1
Relay
outputs 2-4
max. 230 VAC,
d2
4A
d3
21
20
22
18
19
17
15
14
16
12
13
11
9
8
10
6
7
5
output 4
output 3
output 2
Electric connections
Instrument side
10. Appendix
Analogue outputs
module 1 - 4
LT 2 Main board 657 R 1882
X12
X5
F6
0,315 At
X7
3
F5
4 At
Transformer LT2
230/115 V
changeover
F3
1 At
F4
1,25 At
F2
4 At
X6
X8
Analogue
output
module
C
BR 12
BR 11
BR 13
BR 10
S
N
P
1
X13 X15
230V 115V
Analogue
output
module
Plug connector
for interface
modules e.g.
RS232 in
combination with
interface module
BR105
X9
Ower supply
switch
Analogue inputs
Measurement
Module card 1-4
4
Analogue
output
module
2
Analogue
output
module
X11
DIP switch
X1
X10
1
on
BR104
off
BR103
1
1
2
3
4
1
BR102
1
BR101
BR107
1
F1
1 At
Br106
Multifunction
pushbutton
switch T2
1
Row of LED’s
for operatoring
and status
messages
(fault/warnings)
LAMTEC SYSTEM BUS
Digital outputs
(open collector)
Analogue outputs
Probe connection
Monitor output
Analogue inputs
PE
Relay output 1
e.g. for combinined fault indication
N
Power supply connection
230/115 V, 50/60 Hz
L
Maintenance
switch
(3)
ATTENTION! Different fuse figures for 230 V and 115 V supply voltage.
Guard against supply voltage toggling! For fuses see page 76.
73
Factory settings
10. Appendix
Plugs
X1:
X5:
X6:
X7:
X8:
X9:
X10:
X11:
X12:
X13:
X15:
Connection for flat line cable from relay module
Secondary plug, supply transformer
12 V connection for display illumination (as LT1)
2
I C module (as LT1)
Connection for flat line cable from the bus card (as LT1)
Interface module (as LT1)
Output for supply voltage (as LT1)
Plug for mains switch
Extension connector for 2nd probe electronics
Transformer plug, 230 V
Transformer plug, 115 V
TM201 to 204: analogue input module 1 to 4 (as LT1)
Plug layouts, if needed (only for internal use):
X1:
Pin 1, pin 2:
Pin 3:
Pin 4:
Pin 5:
Pin 6:
Pin 7:
Pin 8:
Pin 9:
Pin 10:
+24 V
Control signal, relay 1
Control signal, relay 2
Control signal, relay 3
Control signal, relay 4
Control signal, relay 5
Control signal, relay 6
Do not use
Do not use
X5:
Pin 1:
Pin 2:
Pin 3:
red
blue
red
12.25 V, 4.8 A
0V
12.25 V, 4.8 A
Pin 4:
Pin 5:
green
green
9 V, 1.5 A
Pin 6:
Pin 7:
black
black
9 V, 0.25 A
Pin 8:
Pin 9:
brown 9 V, 0.35 A
brown
X11:
One contact of the supply switch between pin 1 and pin 4, the other
between pin 2 and pin 3. In the ON state, pin 1 is connected to pin 4
and pin 2 to pin 3.
L is on pin 1, N on pin 2.
X13, X15:
One primary winding on pin 1 and pin 2: Pin 1 white, pin 2 yellow
The other primary winding on pin 3
and pin 4:
Pin 3 white, pin 4 yellow.
74
Preliminary works
10. Appendix
LAMTEC system bus:
BR101:
Selection of connection resistance: 1-2 off, 2-3 on.
BR102, 103, 104:
Position 1-2
BR105:
Position 2-3
The new processor card must also be set up for the LAMTEC system bus
(2 jumpers).
RS 422 interface:
BR101:
Position 2-3
BR102, 103, 104:
Position 2-3
BR105:
Position 2-3
The new processor card must be set up for serial 2nd interface (2 jumpers).
2nd interface on the
25-pole plug X9
(only for internal use)
BR105:
BR102 to 105:
Position 1-2
No assigned meaning
Digital inputs:
BR106, 107:
Position 1-2:Digital inputs referenced to instrument
potential.
Position 2-3:Digital inputs, galvanic isolation.
Terminals:
Attention: Terminals 1 and 2 are swapped around in the first PCB version.
Terminals L, N, PE:
Terminals 1, 2, 3:
Terminals 11-26:
Terminals 31, 32:
Terminals 33 to 36:
Terminal 33:
Terminal 34:
Terminal 35:
Terminal 36:
Terminals 42 to 49:
Terminal 60:
Supply connection (as LT1)
Relay 1 (as LT1)
Analogue inputs, as LT1
Monitor output, as LT1
Probe connection, LS2 or KS1
Negative probe signal
Positive probe signal
Probe heating
Probe heating
Analogue outputs, as LT1
+24 V for the digital inputs, only if BR106, 107 are
positioned at 1-2.
Terminals 61 to 69: Digital inputs, as LT1
Terminals 71 to 75: LAMTEC system bus or RS 422 interface
For LAMTEC system bus
Terminal 71:
Screen, earth
Terminal 74:
CAN - high
Terminal 75:
CAN - low
For RS 422: Connection layout, terminals 71 to 75, as LT1.
DIP switch processor card
(see illustration at 5.1.2, page 43)
SW 1
SW 2
Monitor output function
open
open
O 2 measured value
0…2,5 V ^ 0…25 vol.% O 2
connected
open
Probe voltage
0…2,5 V ^ 0…250 mV
open
connected
Cell internal resistance
0…2,5 V ^ 0…250 W
1
75
Fuses
10. Appendix
F6
F2 F3 F4 F5
X1
2
X5
F6
X7
0,315A
T
BR12
BR13
P
N
256
S
S
C
C
BR11
BR10
X8
F5 4A
T
1A
T
F4 1,25A
T
F3
F2
T
0,4A
X6
X1
230
V
X1
115
V
BR10
5
1
X9
X2
X1
K
K
K
K
K
K
K
K
K
K
K
K
1
1
2
1
X1
0
X3
115V
2AT
F1
230V
1AT
LED
2
BR10
4
BR10
3
BR10
2
BR10
1
LED
1
BR10
7
BR10
6
F
1
L N
2
1
1
X1
1
P
E
Fuses:
Designation
76
Value
Function
F1
1A inertial for 230V, Primary fuse
2A inertial for 115V
F2
0,4A inertial
Probe measuring electronics
F3
1A inertial
12 V for display background illumination
F4
1,25A inertial
+/- 5 V supply for processor card
F5
4A inertial
Probe heating and 24 V supply
F6
0,315A inertial
LAMTEC system bus or RS 422
LS 2 dimensional diagram
10. Appendix
LS 2 dimensional diagram
185
66
147
M4SW7
SW 50
^ 22
R1 ¼ “
20
^ 35
see table
12
1
2
3
Part no.
Part no.
Ordering information
____________________________________________________________________________________________________
Gas extraction device (MEV) for
1
655 R 1001
LS 2, 150 mm long
655 R 1002
ditto, 300 mm long
655 R 1003
ditto, 450 mm long
655 R 1004
ditto, 1000 mm long
____________________________________________________________________________________________________
Probe installation fitting (SEA)
for LS 2, screw fitting, R 1¼"
___________________________________________________________________________________________________
2
655 R 1010
3
650 R 1000
LS 2 Lambda probe
LS 2 Lambda probe with MEV and SEA
77
78
150
175
LAMBDA TRANSMITTER LT2
300
LAMTEC
LAMTEC
ENTER
30
85
115
350
1 2 3
Power
1112 13 14 15 16 17 18 19 20 21 22 23 24 25 26
42 43 44 45
31 32 33 34 35 36 46 47 48 49
LAMBDA TRANSMITTER LT2
View with item open
60 61 62 63 64
71 72 73 74 75
65 66 67 68 69
LAMTEC
ENTER
10. Appendix
LT 2 dimensional diagram wall-mounted housing
400
LT 2-19” dimensional diagram
10. Appendix
310
LAMBDA TRANSMITTER LT2
172.5
10.5
ENTER
7.5
LAMTEC
LAMTEC
254 (50TE)
292.4
263
PG connections
64 63 62 61 60
26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11
45 44 43 42
P
E
49 48 47 46
36 35 34 33
3 2 1
32 31
F1
BR10
7
BR10
6
69 68 67 66 65
N
75 74 73 72 71
L
1AT/
LED
2BR10
4
BR10
3
BR10
2
BR10
1
X10
LED
1
X1
X11
253
Toroidal transformer
X9
X13
230V
BR10
5
X15
115V
F2
0,4A
T
F3
1A
T
F4
1,25A
T
F5
4A
T
X8
X6
X5
X12
X7
F6
0,315A
T
132.5 (HE)
57.1
REMOTE
79
LT 2-19” installed dimensions
Panel-installed housing
10. Appendix
270
41
270
41
270
293
18
293
18
293
310
310
310
131.5
Dimensional diagram LT 2
13
12
258
16.5
225
16.5
F6
0,315At
X7
X12
X5
Analogue
X8
3 output
F5
4At
F4
1,25At
F2
4At
F3
1At
X6
C
module
BR12
BR11
S
N
1
BR105
X9
Analogue
4 output
module
X11
X1
Analogue
2 output
module
LED
2
X10
1
2
3
4
LED
1
1
on
BR104
off
BR103
1
1
BR102
BR101
BR107
F1
1At
L
12
15
80
BR106
N
PE
1
1
1
350
1
X15
115V
325
P
X13
230V
Analogue
output
module
173
173
57
137
36
116
57
137
LT 2-19” control panel installation
Wet/dry measurement
Deviations, conversion table
10. Appendix
W O2 %
O 2 % ( dry) = O 2 (wet) + W O 2
Natural gas
0,8
0,7
0,6
Oil (CH2)x
0,5
0,4
0,3
0,2
Theoretical maximum deviations
between wet/dry measurement of O2
concentration with natural gas (CH4) or
oil (CH2)x as fuel
0,1
% O2
0
3
2
1
4
5
6
(wet)
% O2
(dry)
Gas Oil
12
10
8
O 2 (dry) = K O 2 (wet)
6
4
2
% O2
0
2
4
6
8
10
12
(wet)
O2 concentration range
K constant
Gas / CH 4
K constant
Oil / (CH 2) x
0 -
6 % O2
1,18
1,115
6 - 12 % O 2
1,12
1,08
0 - 12 % O 2
1,15
1,10
Calibration diagram and
conversion table for the
concentration values of
oxygen measured wet
(O2(n)) and dry (O2(tr)).
81
11. EC conformity declaration
Month / year:
……… Jan ……… / ………… 1999 …………………
Manufacturer:
LAMTEC Meß- und Regeltechnik
für Feuerungen GmbH & Co. KG
Address:
Impexstrasse 5, 69190 Walldorf, Germany
Product designation:
LT 2 Lambda transmitter, *LT 2-19”
incl. all options
Type 6 57 R 1020…R 1029
....................................................................................
Type 6 57 R 1040…R 1049
*....................................................................................
....................................................................................
The designated product conforms to the provisions of the following European
Directives:
Number
Text
89/336/EEC
Electromagnetic compliance
73/23/EEC
Electric equipment within certain voltage limits
Further details about conformity to these Directives can be found in schedule
Carries CE labelling
Yes
Place, date
Walldorf, 4 January 1999
Legal signature:
....................................................................................
The schedules form an integral component of this declaration.
This declaration certifies conformity to the quoted Directives, however it does not warrant any properties.
The safety notes in the enclosed product documentation must be observed.
82
11. EC conformity declaration
Schedule to EC Conformity Declaration
or EC Manufacturer's Declaration
Month / year:
……… Jan ……… / ………… 1999 …………………
Product designation:
LT 2 Lambda transmitter, LT 2-19”
incl. all options
Type 657 R 1020...R 1029
Type 657 R 1040...R 1049
The designated product's conformity with the provisions of the quoted
Directives is demonstrated through compliance with the following Standards
and regulations:
Harmonised
Europäische Normen:
Reference-no.
issue date
EN50081, part 2
EN50082, part 2
(ENV50140, ENV50141, EN61000-4-2, IEC801-4, EN55014)
National Standards
(as per NSR or MSR art. 5,
para. 1, sent. 2):
Reference-no.
issue date
VDE 0110
VDE 0100
September 1989
-
83
LAMTEC Meß- und Regeltechnik
für Feuerungen GmbH & Co KG
Impexstraße 5
D-69190 Walldorf
Germany
Telefon (+49) 06227 / 6052-0
Telefax (+49) 06227 / 6052-57
Internet: http://www.lamtec.de
e-mail: info@lamtec.de
LAMTEC Leipzig GmbH & Co KG
Presented by:
Schlesierstraße 55
D-04299 Leipzig
Germany
Telefon (+49) 0341 / 863294-00
Telefax (+49) 0341 / 863294-10
Druckschrift-Nr. DLT 3002-08-aE-0008
Printed in Germany
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