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LDS 6 - Siemens

1. o E E a o O ee o O O 8 I II NZ e Power supply Hybrid cable E2000 SMA 24V DC and fuses support single mode multimode sensor opto connector opto connector supply Figure 9 2 LDS 6 three channel 19 central unit optical and electrical connections LDS 6 90 Operating Instructions 01 2009 A5E00295894 05 Dimensional Drawings Pin assignment Connector SUB D 15F GND Analog output 2 P Analog output 2 N Analog output 1 P Analog output 1 N NC GND Analog input 2 P Analog input 2 N Analog input 1 P Analog input 1 N Binary input 6 P Binary input 5 P Binary inputs 5 to 6 N GND GND Binary input 4 P Binary input 3 P Binary input 2 P Binary input 1 P Binary inputs 1 to 4 N Figure 9 3 Pin assignment of the LDS 6 central unit LDS 6 Operating Instructions 01 2009 A5E00295894 05 Analog outputs floating also to one another RL lt 750 Q Pressure correction Pressure correction Temperature correction Temperature correction Floating via opto isolator 0 0 V 0 to 4 5 V 1 24 V 13 to 33 V Floating via opto isolator 0 0 V 0 to 4 5 V 1 24 V 13 to 33 V The relay is de energized in the shown contact position Contact loading max 24 V 1 A AC DC ha Compon
2. m O fora hna CPU and Laser Y Mi eS display control s E O m m a t AAA Signal Diode processing laser A Pr E O 7 Measured ie Optocoupler volume T Channel 2 Pr num Al A Reference cell E O Measured a a a a a a I voume Channel 3 E O Figure 2 6 Basic design of the LDS 6 LDS 6 Operating Instructions 01 2009 A5E00295894 05 19 Technical Information 2 4 Contiguration Examples 2 4 20 Configuration Examples A feature of the in situ analytical procedure is that the physical measurement takes place directly in the stream of process gas and usually also directly in the actual process gas line All process parameters such as gas matrix pressure temperature moisture dust load flow velocity and mounting orientation can influence the measuring properties of the LDS 6 and must therefore be systematically investigated for each new application Gas concentration Flue gas composition Steam E Dust load Central unit Process flange Gas velocity Gas temperature Transmitter anit Gas pressure Receiver Hybrid cable max length 700 m Sensor connecting cable Supplement
3. 5 2 Maintenance Request Alarm A Maintenance request alarm is set when a modification of the analyzer is needed The measuring ability of the analyzer may not be affected during the time this alarm is active However to guarantee reliable measurement in the future it may be necessary to carry out corrective measures The following table shows the different alarm messages signaling for maintenance request that can appear in the logbook These can be individually deactivated using function 88 Table 5 2 Alarm messages No Error Message Possible Causes Action W1 Opto module Laser damage Contact service Leaking reference cell Reference cell displacement Electronics damage W2 Laser current Change of laser current due to aging of laser Contact service W3 External maintenance Maintenance request from outside Check external equipment request W4 Set clock LDS 6 has been switched off Set date and time W5 Ambient Analyzer Ambient temperature or pressure is beyond limits Make sure that the ambient specified in technical data temperature ranges between 5 C 45 C and the ambient pressure corresponds to a place below 2000 m above the sea level W6 Ambient Channel Ambient temperature is outside limits specified in Make sure that the ambient technical data temperature ranges between 5 C 45 C W7 Analog Out Error in calibration of analog output Re calibration is necessary Contact service w8 Error Handler Analyzer Internal
4. Two wire copper cable in twisted pair version for 24 V supply of the detector electronics 12 V in the case of EEx suitable instruments e Additionally for the hybrid cable Single mode fiber optic cable configured double sided with E2000 connectors for transmission of laser light e Rugged cable sheath for mounting in open cable ducts or ductworks e Sheath material oil resistant polyurethane LDS 6 18 Operating Instructions 01 2009 A5E00295894 05 Technical Information 2 3 Operating Principle 2 3 Operating Principle LDS 6 is a gas analyzer employing single line molecular absorption spectroscopy A diode laser emits a beam of near infrared light which passes through the process gas and is detected by a receiver unit The wavelength of the laser diode output is tuned to a gas specific absorption line The laser continuously scans this single absorption line with a very high spectral resolution The result is a fully resolved single molecular line which is analyzed in terms of absorption strength and line shape The influence of cross sensitivities on the measurement is negligible since the quasi monochromatic laser light is absorbed very selectively by only one specific molecular line in the scanned spectral range Central unit Hybrid cables Measurement path mum Laser light Electrical signals Pr Reflected LED light Measured __ volume Fr Channel 1
5. Technical Information 2 2 Design Display and control panel LED backlit graphic display and membrane tactile touch keyboard Large LCD field for simultaneous display of measurement result and device status Contrast of the LCD field is adjustable via the menu LED background illumination of the display with energy saving function Easy to clean membrane touch pad with softkeys Menu driven operation for parameterization and diagnostics Operation support in plain text Status line to indicate the device status Numeric display of concentrations Numeric keypad for entering digits CLEAR key to delete the digits entered Figure 2 3 LDS 6 central unit membrane keyboard and graphic display 14 ENTER key to adopt the numbers Two code levels according to NAMUR Menu driven operator control with five softkeys ESC key to cancel entries INFO key for help in plain text MEAS key to return direct to measurement mode LDS 6 Operating Instructions 01 2009 A5E00295894 05 Technical Information 2 2 Design Inputs and outputs e One to three measurement channels with hybrid connections for the sensors at the measuring points e Two analog inputs per channel for process gas temperature and pressure e Two analog outputs per channel for gas concentration s or for gas temperature and concentration For selected versions the transmission can be read out as an alternative e S
6. 50 Response Time 50 Response Time Ch1 NHs 5 000 Seconds Actual Measured Value 63 28 mg Nm You can use this function to set various time constants to reduce or suppress noise in the measured signal 52 LDS 6 Operating Instructions 01 2009 A5E00295894 05 Operation 4 3 Analyzer Functions 51 Limits You can use this functions to set concentration limits A limit alarm will be triggered when the 51 Limits Ch1 NHs value of a component exceeds the permissible range set in this screen The alarm can be turned Upper Limit 30 00 mg Nm off here The limit alarm is displayed on the status line if this has been set up by function 53 The alarm is Lower Limit 0 00 mg Nm also signalled by a relay if one has been assigned using function 71 The triggering of a limit alarm is registered in the logbook function 3 Limit Alarm On Off 52 Transmission You can use this function to set the transmission parameters A transmission alarm is triggered when the transmission is outside a permissible range The lower alarm level of the transmission 52 Transmission Ch1 NHs for a channel is set as a percentage of the nominal transmission value where the nominal value Alarm Level 5 1 is registered when the fourth soft key is pressed The upper alarm level is set to a fixed value Nominal 301 2 Units and cannot be changed by the user Absolute 285 0 Units The transmission
7. 9 P Parameters 52 S Safety Information Electrical safety 25 Explosion Protection 26 Heat Safety 26 Laser Safety 25 Pressure Safety 26 Service 71 Spare parts 77 T Technical specifications 83 100 LDS 6 Operating Instructions 01 2009 A5E00295894 05 Siemens AG Anderungen vorbehalten Industry Automation IA A5E00295894 05 Sensors and Communication Siemens AG 2009 Process Analytics 76181 KARLSRUHE DEUTSCHLAND www siemens com processautomation aa g Ti A5E00295894 A5E00295894 019169 134279
8. Channel specific e Analog test Channel specific gt Keyboard Test The keyboard test can be used to check various keys on the input panel Pressing one of the five soft keys at the right margin will make the associated point disappear or appear When the digit keys and the sign key are pressed the corresponding digit is stored in the editing field in the bottom line of the display A message will be displayed in plain text as you press the INFO key the MEAS and ESC keys retain their return functions Relay and Binary Test 60 Note Before performing analog or binary I O tests remove all data connectors The first display shows 6 of the relay and binary channels Individual relays can be activated using the relay test This is carried out by using the input field A 1 activates the relay a 0 releases it to the de energized state Digits other than 0 and 1 are not accepted by the input field After leaving function 80 the relays reassume their former status prior to selection of the relay and binary test The column Binary shows the current status of the binary inputs in this display LDS 6 Operating Instructions 01 2009 A5E00295894 05 Operation 4 3 Analyzer Functions Analog Test The analog test can be used to parameter the analog output with a constant current of O 24 mA for test purposes The analog input permanently shows the input currents
9. In particular you should compare the Order No on the rating plates with the ordering data if available If possible please retain the packaging material since you can use it again in case of return deliveries Standards and Regulations As far as possible the harmonized European standards were the basis for the specification and production of this device If no harmonized European standards have been applied the standards and regulations for the Federal Republic of Germany are valid When this product is used beyond the scope of these standards and regulations the valid standards and regulations of the country of the operating company apply LDS 6 Operating Instructions 01 2009 A5E00295894 05 Technical Information 2 1 General Description Overview LDS 6 is a diode laser gas analyzer with a measuring principle based on the specific light absorption of different gas components LDS 6 is suitable for fast and non contact measurement of gas concentrations or temperatures in process or flue gases One or two signals from up to three measuring points are processed simultaneously by one central analyzer unit The in situ cross duct sensors at each measuring point can be separated up to 700 m from the central unit by using fiber optic cables The sensors are designed for operation under harsh environmental conditions and contain a minimum of electrical components H a E Figure 2 1 LDS 6 typical installation with tra
10. 1000 hPa 1 m path length and ambient air Calculation based on VDI 2449 with measurement on each supplied analysis device during temperature test between 5 45 C according to VDI 4203 0 1 ppm 0 6 ppm 0 2 ppm for TUV MCerts analyzers 1 000 ppm 1 000 ppm 1 000 ppm 300 ppm 300 ppm 600 ppm 1 500 ppm 5 ppm 10 ppm 10 ppm 5 vol 5 vol 1 5 vol 1 5 vol 0 3 vol 0 7 5 vol O OOO OO The maximum applicable measuring ranges can be found in the table of standard combinations These can only be applied if the individual process conditions allow We recom mend to contact our Technical Support for checking the applicability LDS 6 Operating Instructions 01 2009 A5E00295894 05 83 Technical Data 8 1 Central Unit Table 8 2 Analytical performance The exact performance can be obtained from the individual analyzer data sheet Analytical performance continued Accuracy Linearity Precision Zero point drift Measured value drift Calibration interval Table 8 3 General General Concentration units Display Laser protection class Certificates Table 8 4 Design Design enclosure Degree of protection Dimensions Weight Mounting 2 of the measured value or minimum detection limit whichever is largest for NHs all versions O2 not with combination with temperature CO all versions CO all versions 5 ofthe measured valu
11. 21 mA For both modes function 41 is used to set the limits of the analog output range to 4 mA start of scale and 20 mA full scale This means that the wider output range Suppress negative E permits recording of measured values outside the adjusted output range but the scaling is measurement values identical to the 4 to 20 mA span If the function Suppress negative measurement values is activated negative measured values are set to the analog output value which corresponds to a measuring value of 0 This analog output value depends on the adjusted measuring range If negative measured values have an unfavorable effect on further processing activate this function The correct measured value is still output in the display LDS 6 Operating Instructions 01 2009 A5E00295894 05 55 Operation 4 3 Analyzer Functions 71 Relay Outputs 71 Relay Outputs Ch1 NHs R1 Fault o R2 Maintenance Request e R3 Transmission o R4 Control e Continue p gt You can use this function to configure relay outputs The basic version contains six freely configurable relays per channel that can be used for signalling maximum 24 V 1 A Each relay can be assigned one of the functions listed in Table Op 4 The relay is normally energized and becomes de energized upon an alarm Up to four relays can be configured in one menu By pressing the fifth last soft key Continue you can switch to further menus and th
12. 4 3 4 Measuring RANgES vecinal iodo 52 4 3 5 Paramelters 2 Ara erinnere 52 4 3 6 CONTIQULA ION aeeie a aii taa ela id 55 LDS 6 Content 4 4 Watch DOQ etait ine acd hie hte cutee Een dada ded 64 5 AMS aa 65 5 1 Alarm RESPONSE AA aaa 65 5 2 Maintenance Request Alarim 2 ccccccceeececeececeeeeeeeeeeceeeeaaeeeneeeeceaaaeaeeeeseseeenaeceeeesaeennieeeseeeees 67 5 3 Faults Alann 2 2 a idad 68 5 4 Transmission Al Ma A A 69 5 5 Limit Alam a as 69 5 6 Function controlada Rn A derer 69 6 EME sennrnennnnnnnen 71 6 1 General about Maintenance and Service uusersnneeeennnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn 71 6 2 Gleaningithe Central Unm aor unaa a er Ha 71 6 3 Cleaning the Wedge Windows ooooocccconnccccnnocccinononcccnnnn coccion cnn nora rra 71 6 4 Calibration Verification re nea ace ae eee Se ees 72 6 5 Reconfiguration of Temperature Compensation 4424444400nnnnennnnnnnnennnnnnnnnenanennnn nenn 73 6 6 Reconfiguration of Pressure Compensation ce eecceeee cent cece entrees eeeeeeeeaeeeeenaeeeeetnaeeeetneeeeees 74 6 7 Reconfiguration of the Path Length sssini enaa cnn canon cnc naar EIT nana 75 7 Spare Parts List Au en A A A A a N AE da ca dat 77 7 1 Compatibility of detectors with central units ee cece ee cece eeeeeeeeeeeteeeeeeeeeeeeeeseeeeeeeeeeaeeeeeeatees 77 7 1 1 Detector Labels iu id iene vegies 77 7 1 2 Gentral Unit kabels 24 2 3
13. 7 3 Ordering Instructions All orders should specify the following 1 Quantity 2 Product description 3 Order number 4 MLFB number and serial number of the instrument to which the spare part will be used 5 For sensor electronics A5E and revision numbers of the detector to be replaced 7 4 Repair Upgrade Faulty equipment should be sent to the repair department with details of the fault and its origin When ordering replacement equipment please specify the serial number of the original equipment Your will find the serial number on the rating plate Address of the responsible repair location your contact list of spare parts etc can all be found on Internet http www siemens com automation service amp support or http www automation siemens com partner LDS 6 Operating Instructions 01 2009 A5E00295894 05 81 Technical Data Central Unit All critical components are housed in the central unit which can be placed several hundred meters away from the measurement point Table 8 1 Analytical performance The exact performance can be obtained from the individual analyzer data sheet Analytical performance Measuring ranges Detection limit HF HCI NH3 H20 top measuring range O2 CO one component CO one component CO CO2 Smallest recommended measuring range HF HCl NH3 H20 top measuring range O2 CO one component CO one component CO CO2 Internally adjustable at 25 C
14. ANSI American National Standards Institute ATEX ATmosphe res Explosibles French for Explosive atmosph res CAC Communication and Analytical Control cm Square centimeters CO2 Carbondioxide CU Central Unit of the analyzer DC Direct Current DN Diameter nominal EEPROM Electrically Erasable Programmable Read only Memory EEx European Energy Exchange e g For example EMC Electromagnetic compatibility ESD Electrostatic Discharge EU European Union Ex Energy Exchange FPGA Field programmable Gate Array H20 Water HCI Hydrogen chloride HF Hydrogen fluoride hPa Hectopascal HU Height unit for computer housings 1 HU 1 44 45 mm K Kelvin kHz Kilohertz kQ Kiloohms kPa Kilopascal Operating Instructions 01 2009 A5E00295894 05 95 List of Abbreviations B 1 List of Abbreviations 96 Abbreviation symbol LAN Explanation Local Area Network I Liters Ib Pound 0 45359237 kilograms Ibf Pound force 4 448222 Newton LCD Liquid Crystal Display LD Laser Diode LDS Laser Diode Spectrometer LDSComm Laser Diode Spectrometer Communication software LED Light Emitting Diode LVC Low Voltage Directive LW Long Wave Fibre for oxygen analyzers mA Milliamperes max Maximum mba MBA Start of measuring range mbar Millibars mbe MBE End of measuring range mg Milligrams mg Nm EU Milligrams per dry st
15. CD 6 Ex is used in the hazardous zone In addition to this an explosion protection barrier is added before entry into the hazardous zone An absolute condition for the approval is that the equipment is set up according to the drawing ADM 3040 3050 please refer to the separate ATEX manual for LDS 6 The protection is as follows Cross Duct Sensor Ex Il 1G Ex ia IIC T4 x II 1D IP65 T135 C Central Barrier Unit x II 1 G Ex ia IIC x II 1 D Ex iaD Equipment Group Group II Surface Equipment Category Category 1G D Zone 0 Flammable material can be present continuously frequently or for long periods in gas and dust Type of protection EEx ia The equipment present in the hazardous area is intrinsically safe Explosion group IIC This corresponds to a gas group containing Acetylene and Hydrogen Temperature class T4 The maximum surface temperature on the equipment is 135 C 275 F and the ignition temperature of the gas or vapor is between 135 C 275 F and 200 C 392 F The sensor housing protection is IP65 and the ambient temperature must be between 30 C 22 F and 60 C 140 F Following commissioning the total responsibility is with the owner Operating Instructions 01 2009 A5E00295894 05 27 Installation Guidelines 3 2 General Installation Information 3 2 General Installation Information Mounting Conditions 28 The central unit LDS 6 should be placed
16. D S N1S1000001 100 240 V 50 60 Hz 50 VA Made in France All Version 2 units with MLFB number 7MB6121 Made in France are labeled E02 or higher LDS 6 Central Unit 1P 7MB6121 0CA10 0XX1 Z A10 B20 2P S N1S1000001 100 240 V 50 60 Hz 50 VA Made in France Almost all units with MLFB number 7MB6021 Made in Sweden were delivered as Version 1 Only a few of these have been delivered with version 2 electronics There is no label indicating this exception but it applies to the following serial numbers LRN U9 000011 LRN U9 000013 LRN U9 000014 LRN U9 000016 LRN U9 000017 LRN UO 000001 LRN UO 000002 LRN UO 000005 LRN UO 000007 LRN UO 000008 LRN UO 000010 LRN UO 000014 LRN UO 000015 LRN UO 000016 LRN UO 000017 LRN UO 000018 LRN UD 000002 LDS 6 78 Operating Instructions 01 2009 A5E00295894 05 Spare Parts List 7 2 Spare Parts Lists 7 2 Spare Parts Lists All spare parts are identified by an order number For example the order number A5E00854188 corresponds to a 3 channel external power supply LDS 6 Table 7 1 Spare parts central unit Product description Order no LDS 6 CU_PCB1 w CAC_PCB spare part software lt R20 A5E00928615 LDS 6 CU_PCB1 w CAC software R20 or higher A5E00338478 LDS 6 CU_PCB2 spare part software lt R20 A5E00928875 LDS 6 CU_PCB2 software R20 or higher A5
17. New date Hours 24 hour system and minutes are entered as New time The set data are imported when you press the third soft key Set Clock The data then appear as an active display at the bottom of the screen Note Date and time must be reset in case of a power failure 54 LDS 6 Operating Instructions 01 2009 A5E00295894 05 Operation 4 3 Analyzer Functions 60 Setup Logbook 60 Setup Logbook Ch1 NHs Clear logbook Lock logbook a You can use this function to delete or lock logbook entries see also function 3 4 3 6 Configuration All functions of this block are only accessible via the password for level 2 except function 89 Ethernet On Off which requires code level 3 Input Menu Following selection of the configuration functions in the main menu by pressing the fifth soft key Continue you can branch to the further configuration functions Configuration Ch1 NHs 70 Analog Output gt 71 Relay Outputs gt 72 Binary Inputs gt 73 Communication gt Continue gt 70 Analog Outputs You can use this function to switch the mode of the analog output between NAMUR and non NAMUR If the NAMUR mode is chosen in this screen the lower and upper limits of the analog 70 Analog Output Ch1 Nhs outputs are 3 8 and 21 5 mA respectively according to the NAMUR standard Otherwise the 4 20mA NAMUR e limits are 2 and
18. Process optimization Continuous emission monitoring for all kinds of fuels oil gas coal and others Process measurements in power utilities and any kind of incinerator Process control Explosion protection Measurements in corrosive and toxic gases Quality control Environmental protection Plant and operator safety Sectors Power plants Steel works Cement industry Chemical and petrochemical plants Automotive industry Waste incinerators Glass and ceramics production Research and development Special applications In addition to the standard applications special applications are available upon request LDS 6 Operating Instructions 01 2009 A5E00295894 05 11 Technical Information 2 1 General Description Essential characteristics e Integrated calibration adjustment with an internal reference cell e Negligible long term drifts of zero and span e Dynamic background correction for varying dust loads e Isolated signal outputs 4 to 20 mA e User friendly menu driven operation e Selectable time constants response time e Two user levels with individual access codes for prevention of unwanted and unauthorized operations e Operation according to NAMUR recommendations e Monitoring of overall optical transmission e Remote preventive maintenance and servicing via Ethernet modem e Straightforward replacement of the central unit since connections can easily be removed e Sensor and central unit h
19. control alarm Status Row When the alarms limit LIM transmission limit TR or function control CTRL occur their corresponding square symbol in the status row will be lit if this has been set up in function 53 If a Maintenance request or a Fault is triggered the text Maintenance request or Fault will appear on the status line This message is output alternately with the status messages STO and CODE may also appear in the status line but these are not signaling for alarms see the chapter Operation Table 5 1 Logbook At the same time that an alarm is activated marked with a sign and inactivated marked with a sign a new message will appears in the logbook function 3 The message will also show 3 Logbook Ch1_NHa the time when it was recorded in the logbook together with a short text describing the alarm S1 13 11 03 16 43 O Optomodule Fault S1 13 11 03 16 37 Optomodule Fault W3 12 11 03 23 55 Signal quality W3 12 11 03 23 54 Signal quality Continue Page 1 Faults are considered to be more severe than other alarms and are therefore treated somewhat different in the logbook When a fault message first appears in the logbook it is marked with a filled circle to the right To inactivate the fault alarm the fault message must be acknowledged by pressing the soft key next to it This also removes the circle The text in the status line as well as the resp
20. error log is full Contact service w9 Error Handler Channel Internal error log is full Contact service W10 Data Flow Analyzer Electronics failure in internal communication Contact service W11 Data Flow Channel Electronics failure in internal communication Contact service W12 Compensation External temperature signal is outside the limits Check signal Temperature Limit Make sure that the temperature is within the limits specified in function 83 W13 Compensation Pressure External pressure signal is outside the limits Check signal Limit Make sure that the pressure is within the limits specified in function 82 LDS 6 Operating Instructions 01 2009 A5E00295894 05 67 Alarms 5 3 Faults Alarm 5 3 Faults Alarm Any faults in the hardware that makes the analyzer unable to carry out measurements result in a fault alarm The measured value flashes and then it is always necessary to take corrective measures The faults listed in the following table lead to a fault alarm message in the logbook These can be individually deactivated by using function 88 Table 5 3 Fault alarm messages No Error Message Possible Causes Action S1 Opto module Laser damage Contact service Leaking reference cell Reference cell displacement Electronics damage S2 Laser Current Change of laser current due to ageing of laser Contact service 3 Signal Quality Signal amplitude too high due to high comp
21. in mA 81 Select Language You can use this function to switch the analyzer to a different dialog language The new 81 Select Language Ch1 NH language will be effective in all screens only after having performed the following sequence English 1 Press the MEAS key 2 Answer YES in the following display Espanol 3 Restart the analyzer Italiano Francais Deutsch Change requires restart 82 Pressure Correction You can use this function to select one of the following 82 Pressure Corr Ch1 Nhs Correction for pressure using an internal pressure sensor in the central unit Mode Manual e e Correction for pressure using an external pressure sensor via analog input 2 e Correction for pressure using a manual pressure value example as shown on the adjacent Measuring Range display 700 0 1300 mbar Limits 700 0 1300 mbar Manual Value 1013 mbar Ana Inp 2 4 20mA NAMUR e The pressure values are entered as absolute pressure values The selected measuring range always corresponds to the analog input signal range of 4 20 mA No other input signals can be used If the pressure sensor is configured according to the NAMUR standard the NAMUR mode should be selected for the analog input signal In that case only input signals within the range of 3 8 21 5 mA are accepted If the NAMUR mode is not selected input signals within the range of 2 21 mA are accepted The limits normally
22. not followed serious burns of the unprotected skin may happen Pressure Safety The sensor is tested at a pressure of 600 kPa This pressure value should not be exceeded in operational conditions A WARNING Should pressures higher than 600 kPa occur in the process this can lead to destruction of the sensors and their environment In worst case process media may break free and pollute the environment Avoid under any circumstances process pressures higher than 600 kPa If this rule is not followed death injuries and or damage to property and environment can occur Explosion Protection Il 1GD T135 C EEx ia IIC T4 IP65 The LDS 6 with a central unit and sensors interconnected with optical fibers is explosion safe Only a limited low energy part of the electronics is located at the measurement site The distance between the central unit and the sensors can be several hundred meters The LDS 6 system is available in an Ex version and is then delivered with an approval for use in hazardous environments The ATEX certificate is a system certificate and is only valid if LDS 6 is installed according to the instructions given in the certificate LDS 6 26 Operating Instructions 01 2009 A5E00295894 05 nstallation Guidelines Approval Liability LDS 6 3 1 Safety Information The concept of the Ex approval is that the central unit is unchanged from a standard unit and that a special Ex sensor pair
23. of detectors with central units For all gases except O2 LDS6 exists in two versions as a consequence of a major upgrade Three of the LDS6 spare parts are affected by the change and will consequently exist in two different versions The Sensor electronic spare parts consist of one detector and one detector PCB A5E00681433 respectively The PCB is not affected by the modification but the detector is different This spare parts list corresponds to the technical state of February 2009 Detector Labels The detector A5E number indicates if a sensor is to be used with a Version 2 central unit Besides the example in the following picture also A5E1033996 HCI and A5E1030124 CD 6C are used with version 2 The detector revision number e g ES01 is only important if selecting a spare part that has been stored for some time To avoid degraded performance do not use a spare part with a lower revision number to replace a detector with higher revision number Figure 7 1 Labeling on the detector unit Spare Parts Lists Page 79 Operating Instructions 01 2009 A5E00295894 05 77 Spare Parts List 7 1 Compatibility of detectors with central units 7 1 2 Central Unit Labels Starting February 2009 all version 1 units with MLFB number 7MB6121 Made in France are labelled E04 Former version 1 units with MLFB number 7MB6121 Made in France are labeled E01 LDS 6 Central Unit 1P 7MB6121 0CA10 0XX1 Z A10 B20 2P
24. personal injury and or damage to persons and or property may result if this is not observed LDS 6 and CD 6 meet all regulations specified in the present EU regulations LVD regulation 2006 95 EC and EMC regulation 2004 108 EC The device can be used in an industrial environment Laser Safety All lasers used by LDS 6 are of class 1 The emitted laser light is in most cases invisible near infrared and the intensity is low enough so that the unprotected eye is not damaged under normal circumstances LDS 6 has warning labels at appropriate positions according to DIN EN 60825 1 caution This device emits laser beams To avoid damage to your eyes never look directly into the laser beam If this rule is not followed there is a chance that damage to the unprotected eye may occur if you look directly into the laser beam particularly when using focusing optics e g binoculars LDS 6 Operating Instructions 01 2009 A5E00295894 05 25 Installation Guidelines 3 1 Safety Information Heat Safety Some metal parts and piping placed near the sensors are at elevated temperatures The reason is high temperature purging either from steam or from air caution The sensors are designed for work at elevated temperatures particularly when a purging system is in operation Even after operation these parts cool off slowly For any work around these sensors be sure to wear protective gloves If this rule is
25. point Table 8 13 Blower purging Blower purging Maximum counter pressure Maximum flow rate Power consumption Degree of protection fan Table 8 14 Steam purging Steam purging Steam conditioning Maximum temperature Minimum pressure Maximum pressure 200 800 kPa lt 500 hPa free of oil and water Purity better than 99 7 For oxygen measurements an O2 content lt 0 01 is recommended in the purging gas optical path length 2 1 m min 5 oxygen in the process gas 500 l min Benchmark lt 10 C condensation on the optics must be avoided 4 kPa 350 l min 370 W IP54 Overheated 240 C gt 400 kPa 1 600 kPa refers to a volume flow of approx 1 100 I min LDS 6 Operating Instructions 01 2009 A5E00295894 05 Dimensional Drawings 9 Central unit The central unit will fit in a standard 19 rack The dimensions are shown below 440 gt I 465 483 al A oo N Y y Figure 9 1 Dimensional drawings of the central unit LDS 6 LDS 6 Operating Instructions 01 2009 A5E00295894 05 89 Dimensional Drawings Connections 25 pin connector 15 pin connector Binary inputs and Binary inputs and relay outputs analog inputs outputs o o E E E E EN ER O Oy Oy E E Ethernet 38 lt converter EN RS 45
26. the Relative Transmission x E 5 98 00 measurement point and the measuring path the effective length ofthe path Temperature 314 0 C Pressure 1013 mbar absolute Measuring Path 1 000 m Table 4 4 3 Logbook You can use this function to display logged messages Any event which leads to a maintenance request W or fault message S is listed in the logbook for a more 3 Logbook Ch1 Nhs detailed description of error handling see the chapter Alarms eu Limit alarms LIM transmission alarms TR and function check CTRL are also S141 13 11 03 16 37 recorded However these do not trigger a maintenance request or fault message Optomodule Fault W3 12 11 03 23 55 Signal quality W3 12 11 03 23 54 Signal quality Continue Page 1 The soft key can be used to acknowledge the respective fault entry The dot will then disappear A sign at the end of the entry means an activated alarm a sign an inactivated alarm The logbook contains a maximum of ten pages each of which can accommodate four messages It operates according to the principle of a circulating buffer i e the oldest message is overwritten when all ten pages are full 40 messages Fault messages are not deleted if they have not been acknowledged The logbook entries can be deleted or blocked function 60 or also switched off individually function 88 Note If a fault occurs when the error message is switched off by functio
27. the cursor is automatically positioned to the next input field Note Each input value must be confirmed with ENTER before you leave the menu e The CLEAR key can be used to delete an input The cursor then returns to the first position of the input field Graphic Styling Elements m Switching function ON status O Switching function OFF status also status display in the status line gt Entry into a subsequent menu e Triggering of a function Measuring mode analyzer is coded Service mode signals are activated according to functions 71 and 77 LDS 6 Operating Instructions 01 2009 A5E00295894 05 43 6 The circled numbers marking certain steps in the input sequence can also be found in the The figure Input sequence interacting with LDS 6 below shows the input sequence of LDS text following the figure Input Sequence of Data 4 2 Input Sequence of Data Operation 4 2 suageaj pour SUMO OJ AUO TZ apun TAL LL vap ny mdno soyeue 10 9 1019 OUD UA PUNY Aey PS 110 preset pun uOSS9S p IMI ur pasn aq IIA s 3ueyo ON TI N Sox sua BPAJIPOW p IMI MLS SA 9MIJOS Sko PIBH gt gt aT piomssed jo mduj CODA TLP OLST pag EL TT uysu 8 9 pay EL II wysw 8 C ES uag najuoy S19 902 Je q asuey SULMSBIN vogeagge Coding of analyzer lt SNIEIS Jez
28. 222 Hrn ee a eae 78 7 2 Spare Parts Lists ii A nr Lean 79 7 3 Ordering Instructions 2 22 rn nee E dd Peet aga 81 7 4 Repair Upgrade 2 aaa a Rae neue 81 8 Technical Dalarnas dida 83 8 1 Central United Ad E 83 8 2 Hybrid and Sensor Cabe Sers tic till titi 87 8 3 O 88 9 Dimensional DraWINGS 2 een A tdi cda 89 ESD Quide lin s ui A A dira 93 A 1 ESD Quidelines eriei inona anani A t 93 B List of Abbreviations ss else nein 95 B 1 List of Abbreviations 2 dice eth cha Rei nel eke diene 95 A 99 LDS 6 6 Operating Instructions 01 2009 A5E00295894 05 General Information 1 1 1 1 2 LDS 6 Operating Instructions 01 2009 A5E00295894 05 Information for our Customers Before beginning work with this device please study this manual carefully It contains important information and data whose observation ensures proper device function and saves you servicing costs The manual will help you to operate the device more easily and efficiently allowing you to achieve reliable results General Information The product described in this manual has left the factory in a high quality and tested condition In order to preserve this condition and to operate this product correctly and safely it may only be used in the manner described by the manufacturer Furthermore proper transportation storage installation operation and maintenance of the device is vital for ensuring correct and safe operatio
29. 4 Configuration Examples cuina iia ainda 20 25 Measurement PrinGiple 24 4 en keit italia a 21 3 Inst llation Guidelines viet lances eed A e cana da 25 3 1 Safety Information neusten 25 3 2 General Installation Information e a a a a aa a e a a S A e a anae 28 3 3 Electrical Connections astilla 29 3 3 1 Power Supply Conne amp ctions 2 aiii ladra abit 29 3 3 2 Hybrid Cable Connecti soriy riarann ee Master vant a une 31 3 3 3 Signal G blE Connection cin nannte nenne nsdee here 32 3 3 4 Pin Assignment Of LDS Guin iii ici cd o aan edel 34 3 4 Three Channel System heat 35 3 4 1 External Power SUpplY ooooccoccnonocccnconcnnonnononccnconncnnnnnnnnn nn nnn eaaa ape i aaaea n rra 35 3 4 2 Three Channel Hybrid Cable Connection oooocccconoccccnnocccccccnnoncncnononccnnnoncncnannnnc nano nc nn nnnnn cn nana nnccnnns 36 3 5 Flange Installation Requirements occccoonocccccnnocccnonononcncnononcncnnnncncnnnnn cnc nana ncn canon ccn nan n cnc naar ae nanna nenne 37 3 6 Installation of Flanges na ria ER ee dodo ae dd lies 37 4 Opera iii ii Ad Hehe A a aa aaa a ias 41 4 1 Clin e e e a ald 41 4 2 Input Sequence of Data cccccceceeseccceceeeeee eee eeeeeeaeceeeeeeeeaeaececeeeeesaaaeeeceeeeeeeeaeeeeeeeeneeneeeeeees 44 4 3 Analyzer FUNCIONS ensaia niiina a en od e a 47 4 3 1 Summary of Analyzer FUNCIONS siia n a ne E e E E EA E 47 4 3 2 Analyzer Status id aaa a a A tie EA 49 4 3 3 GalibratiOna iaa lala tidad 51
30. 5E00295894 05 nstallation Guidelines 3 3 Electrical Connections 3 3 2 Hybrid Cable Connection The hybrid cable is connected at the back of the central unit where its two optical cables and the supply line for the sensor wire are attached as shown in the picture below LLL ZZ LLL La Fi 6 GQ 2 Me 3 4 5 Figure 3 1 LDS 6 cable connections here only channel 3 is connected Awwarnine Keep the fiber end protected by the protective tube until it is time for connection Only authorized personnel are entitled to remove the protective tube and proceed with the connecting operation Hybrid cable holder E2000 Single Mode fiber connector angle polished SMA Multi Mode fiber connector Sensor voltage supply connection 24 V 60 mA Signal output connections Network connection Ethernet 10Base T RJ 45 Ooh WD See also Pin Assignment of LDS 6 Page 34 Signal Cable Connection Page 32 LDS 6 Operating Instructions 01 2009 A5E00295894 05 31 nstallation Guidelines 3 3 Electrical Connections 3 3 3 32 Signal Cable Connection caution The signal voltages must be electrically isolated extra low voltages SELV The maximum voltage potential accessible to persons is 33 Ver or 46 7 V peak or 70 V dc If several SELV voltages are available then it is possible that the sum of these potentials is higher than that allowed to get in contact with
31. A euy H TOS TEN LDS 6 Operating Instructions 01 2009 A5E00295894 05 44 Operation 4 2 Input Sequence of Data Entry into Main Menu for a Whilst in Measuring Mode the component is shown on the right with 1 or 2 Channel System an arrow P A soft key is assigned to this specific component and it is called by pressing it Figure 4 2 Input sequence interacting with LDS 6 Entry into Main Menu for a The appearance of the screen menu varies depending on the number of channels and the 3 Channel Svstem number of measured components For a 3 channel system the soft keys of the measuring LIM OSTO OCTRL OTR OCODE screen are assigned to channels instead of measured components If the channel has two 11 28 mg Nm3 NH3 components it is necessary to pass a second channel specific measuring screen before entering 11 13 Chi the component specific main menu LIM OSTO OCTRL OTR OCODE 12 53 mg Nm3 NH3 10 13 ch2 gt LIM OSTO OCTRL OTR OCODE 5 28 mg Nm3 NH3 15 13 Ch3 gt Each channel can be operated independently Channel 1 11 28 mg Nm3 NH gt 1 1 i 1 3 vol H 0 gt LIM OSTO OCTRL OTR OCODE Main Menu The main menu consists of the five items shown in the adjacent screen Main Menu Ch1 NH3 Analyzer Status gt Calibration gt Measuring Range gt Parameters g
32. A5E00295894 05 79 Spare Parts List 7 2 Spare Parts Lists Table 7 3 Spare parts CD 6 sensor Product description Order no CD 6 Launcher complete A5E02359462 CD 6 Filter for air blower A5E00853935 CD 6 Window module quartz A5E00338487 CD 6 Window module engine no purging A5E00338490 CD 6 Purging tube 400mm sintered filter A5E00858612 CD 6 Purging tube 400mm air blower adapter A5E00858615 CD 6 Purging tube 800mm sintered filter A5E00858611 CD 6 Purging tube 800mm air blower adapter A5E00858614 CD 6 Purging tube 1200mm sintered filter A5E00338496 CD 6 Purging tube 1200mm air blower adapter A5E00858580 CD 6 Sensor box transmitter LW A5E00902914 CD 6 Sensor box transmitter SW A5E00902916 CD 6 Sensor box receiver SW A5E00902917 CD 6 Sensor box receiver LW A5E00902918 CD 6 High pressure with flange 1 4404 stainless steel DN65 PN6 A5E00534662 CD 6 High pressure with flange 1 4404 stainless steel DN80 PN16 A5E00534663 CD 6 High pressure with flange 1 4404 stainless steel ANSI 4 A5E00534664 CD 6 Air blower 115 V A5E00829150 CD 6 Air blower 230 V A5E00829151 CD 6 Alignment kit A5E00253142 CD 6 Entry seal for sensor A5E00853911 Table 7 4 Spare parts CD 6C sensor Product description Order no CD 6C Sensor box transmitter A5E00854163 CD 6C Sensor box receiver A5E00905117 CD 6C High
33. E indicates that an unintended result or situation can occur if the corresponding information is not taken into account If more than one degree of danger is present the warning notice representing the highest degree of danger will be used A notice warning of injury to persons with a safety alert symbol may also include a warning relating to property damage Qualified Personnel The device system may only be set up and used in conjunction with this documentation Commissioning and operation of a device system may only be performed by qualified personnel Within the context of the safety notes in this documentation qualified persons are defined as persons who are authorized to commission ground and label devices systems and circuits in accordance with established safety practices and standards Proper use of Siemens products Trademarks Note the following A WARNING Siemens products may only be used for the applications described in the catalog and in the relevant technical documentation If products and components from other manufacturers are used these must be recommended or approved by Siemens Proper transport storage installation assembly commissioning operation and maintenance are required to ensure that the products operate safely and without any problems The permissible ambient conditions must be adhered to The information in the relevant documentation must be observed All names identified
34. E00338485 LDS 6 CU_PCB2 for ATEX software R20 or higher A5E00902930 LDS 6 CU_PCB2 for ATEX software lt R20 A5E00980288 LDS 6 Front plate with display A5E00290645 LDS 6 Power supply for central unit A5E00290646 LDS 6 Fuse for central unit 100 240 V T2 5L250V A5E00854185 LDS 6 3 Channel external power supply A5E00854188 LDS 6 Fuse for external power supply 100 240 V T1 25L250V A5E00854190 LDS 6 D sub 15pin with cable entry A5E00338618 LDS 6 D sub 25pin with cable entry A5E00338622 Table 7 2 Spare parts cables Product description Order no Standard hybrid cable LW 5 m A5E00818626001 Standard hybrid cable LW 10 m A5E00818626002 Standard hybrid cable LW 25 m A5E00818626003 Standard hybrid cable LW 40 m A5E00818626004 Standard hybrid cable LW 50 m A5E00818626005 Standard hybrid cable SW 5 m A5E00818619001 Standard hybrid cable SW 10 m A5E00818619002 Standard hybrid cable SW 25 m A5E00818619003 Standard hybrid cable SW 40 m A5E00818619004 Standard hybrid cable SW 50 m A5E00818619005 Standard loop cable 5 m A5E00818640001 Standard loop cable 10 m A5E00818640002 Standard loop cable 25 m A5E00818640003 Hybrid cable SW 2m A5E00814073 Hybrid cable LW 2m A5E00814171 Hybrid cable LW customized length please specify length in order A5E00856746 Hybrid Cable SW customized length please specify length in order A5E00856745 Loop Cable customized length please specify length in order A5E00856744 Operating Instructions 01 2009
35. Figure 2 10 Absorption spectra of water and ammonia Moreover in some applications it is possible to determine the gas temperature as a measured value In this case the ratio of the absorbance of two characteristic lines of the same molecule measured at the same time in the same volume gives the actual temperature in the process gas Typical measurable gases for LDS 6 are e Oxygen O2 for low and high pressure e Oxygen temperature e Hydrogen fluoride HF water e Hydrogen chloride HCl water e Ammonia NHs water e Water vapor H20 e Carbon monoxide CO e Carbon dioxide CO2 e CO CO 2 By using an internal reference cell normally filled with the gas measured the stability of the spectrometer is permanently checked in a reference channel By doing so the continuous validity of the calibration is ensured without the need to carry out external recalibration using bottled test gases or reference gas cells LDS 6 22 Operating Instructions 01 2009 A5E00295894 05 Technical Information 2 5 Measurement Principle Absorption line Laser line Figure 2 11 Typical spectral bandwidth of an absorption line compared to the bandwidth of the laser light Influences on the measurement Dust load Temperature LDS 6 As long as the laser beam is able to generate a suitable detector signal the dust load of the process gases does not influence the analytical result By applying a dynamic background correct
36. LDS 6 In situ Laser Gas Analyzer Operating Instructions 01 2009 Mr PALSLLLSS LLP 4111 LLL Continuous Gas Analysis SIEMENS SIEMENS Continuous Gas Analysis In Situ Laser Gas Analyzers LDS 6 Operating Instructions 01 2009 A5E00295894 05 General Information Technical Information Installation Guidelines Operation Alarms Maintenance and Service Spare Parts List Technical Data Dimensional Drawings ESD guidelines List of Abbreviations W gt O IN O o bh W IN Legal information Warning notice system This manual contains notices you have to observe in order to ensure your personal safety as well as to prevent damage to property The notices referring to your personal safety are highlighted in the manual by a safety alert symbol notices referring only to property damage have no safety alert symbol These notices shown below are graded according to the degree of danger indicates that death or severe personal injury will result if proper precautions are not taken A WARNING indicates that death or severe personal injury may result if proper precautions are not taken CAUTION with a safety alert symbol indicates that minor personal injury can result if proper precautions are not taken CAUTION without a safety alert symbol indicates that property damage can result if proper precautions are not taken NOTIC
37. LDS 6 Operating Instructions 01 2009 A5E00295894 05 33 nstallation Guidelines 3 3 Electrical Connections 3 3 4 Pin Assignment of LDS 6 The signal connection is carried out by using two DSUB connectors for each channel one 15 pins and one 25 pins Connector SUB D 15F GND Analog output 2 P Analog output 2 N Analog output 1 P Analog output 1 N GND Analog input 2 P Analog input 2 N Analog input 1 P Analog input 1 N Binary input 6 P Binary input 5 P GND GND Binary input 4 P Binary input 3 P Binary input 2 P Binary input 1 P Figure 3 3 Pin assignment for I O connections 34 Binary inputs 5 to 6 N Binary inputs 1 to 4 N Analog outputs floating also to one another R lt 750 Pressure correction Pressure correction Temperature correction Temperature correction Floating via opto isolator 0 0 V 0 to 4 5 V 1 24 V 13 to 33 V Floating via opto isolator 0 0 V 0 to 4 5 V 1 24 V 13 to 33 V The relay is de energized in the shown contact position Contact loading max 24 V 1 A AC DC N D 1 Component 2 if present Component 1 Non floating analog inputs LDS 6 Operating Instructions 01 2009 A5E00295894 05 nstallation Guidelines 3 4 Three Channel System 3 4 Three Channel System 3 4 1 External Power Supply The three channel version of LDS 6 uses an external power supply for the sensors The setup at the sensor site
38. al General Configuration hybrid cable Cable sheath Dimensions Diameter Length Impact resistance Maximum tensile strength Minimum bending radius Table 8 11 Climatic conditions Climatic conditions Ambient temperature Rel humidity LDS 6 Operating Instructions 01 2009 A5E00295894 05 8 2 Hybrid and Sensor Cables Two optical fibers and two twisted copper wires in one cable for 24 V DC Single mode optical fiber configured at both ends with E2000 angle connectors Multimode optical fiber configured at both ends with SMA connectors Oil resistant polyurethane lt 8mm up to 1 000 m for lengths gt 500 m an external power supply must be additionally ordered for installations in Ex zones non intrinsically safe cables have to be spatially separated from intrinsically safe lines lengths lt 600 m 200 N cm 500 N 10 cm 40 80 C during operation lt 95 rel humidity above dew point 87 Technical Data 8 3 Purging 8 3 Purging Conditions of purging media As medium nitrogen is permissible for purging the sensor side Nitrogen steam air and gases which are not subject to the pressure equipment directive Cat 2 are permissible as 88 purging gases for the process side Table 8 12 Purging with air and nitrogen Purging with instrument air N2 Pressure at purging inlet Maximum overpressure in the sensor Quality Instrument air Nitrogen Maximum flow rate Dew
39. alarm is displayed on the status line if this has been set up by function 53 The alarm is also signalled by a relay if this has been set up by function 71 The triggering of a transmission alarm is registered in the logbook Set Nominal Value o function 3 Relative 84 93 Transm Alarm On Off a 53 Status Messages You can use this function to display within the status line up to four different statuses which can be assumed by the analyzer 53 Status Messages Ch1 NHs Display Stored Value a STO Display Limits a LIM id Display Func Control a CTRL Display Transm Limits M TR Table 4 7 Op 3 Function Status STO Stored Value Analog output connected to memory see also function 77 LIM Limit Upward or downward violation of limit see also function 51 CTRL Function Control Start up mode Service mode TR Transmission Upward or downward violation of transmission limit see also function 52 LDS 6 Operating Instructions 01 2009 A5E00295894 05 53 Operation 4 3 Analyzer Functions 55 Select Digits 55 Select Digits Ch1 NHs Supress Negative a Values Digits After Automatic Decimal Point You can use this function to select the number of decimal digits The number of digits including the decimal point is always five when setting the function to automatic You can also use this function to suppress the
40. alibration when the measured value is stable Calibrate e The status of the calibration will be shown at the bottom of the screen Act Val 0 12 mg Nm 21 Span Calibration You can use this function to calibrate the span setpoint of a measuring range This display lists the setpoint and the current value 21 Span Calib Ch1 NHs Setpoint 293 0 mg Nm3 The calibration is triggered by pressing the third soft key The current value is then set to coincide with the set point Act Val 288 1 mg Nm Calibrate o LDS 6 Operating Instructions 01 2009 A5E00295894 05 51 Operation 4 3 Analyzer Functions 4 3 4 Measuring Ranges Table 4 5 41 Define Ranges 41 Define Ranges Ch1 NHs Start Value End Value 0 000 100 0 mg Nm You can use this function to define a measuring range by assigning a start of scale value to the bottom value 4 mA and a full scale to the top value 20 mA of the analog output 4 3 5 Parameters Table 4 6 This display showing the selection of the parameter functions 50 to 53 appears following the Parameters Ch1 Nhs selection of the parameter functions in the main menu by pressing the fourth soft key 50 Response Time gt Parameters You can branch to the parameter functions 54 to 60 by pressing the fifth soft key Continue 51 Limits gt 52 Transmission gt 53 Status Messages gt Continue gt
41. align the flanges perfectly Depending on the diameter and length of the stubs the possibility to align the sensors is more restricted when long purging tubes are used LDS 6 Operating Instructions 01 2009 A5E00295894 05 39 Operation 4 1 LDS 6 General 4 Once the installation of the sensors at the measurement points is done and the connection via hybrid cables to the LDS 6 is established the system is ready to be used The functions in the LDS 6 are controlled through a keypad on the front of the panel A 5 LCD screen is used to present the measurement values as well as the instrument s interface the MMI Note In the following screen examples the application illustrated is mainly for the gas NH3 ammonia However they are valid for all applications and gases Figure 4 1 1 Measured value a 2 P OLIM OSTO OCTRL OTR CODE A OLIM OSTO OCTRL OTR OCODE a Aaa DEE The keypad and the screen on LDS 6 2 Status display LIM means limit alarm signaling is idle and MLIM means limit alarm has been triggered Operating Instructions 01 2009 A5E00295894 05 41 Operation 4 1 General 42 3 Status line can be parameterized using function 53 If a fault occurs during operation the message Maintenance request or Fault appears in the status line depending on the importance of the fault This message is displayed alternately with the status messages 4 Uni
42. andard cubic meter European standard The concentration is based on the following conditions according to DIN EN 1343 0 C ambient temperature 1013 hPa barometric pressure mg Nm3 US Milligrams per dry standard cubic meter US standard The concentration is based on the following conditions according to SATP 25 C ambient temperature 1013 hPa barometric pressure min Minute or minimum ml Milliliters MLFB German for Machine Readable Product Code mm Millimeters mm Square millimeters MPa Megapascal mQ Milliohms MQ Megaohms NAMUR Standards working committee for measuring and control technology in the chemical industry NH3 Ammonia Nm3 dry Standard Cubic meter O2 Oxygen PA Process Automation PC Personal Computer PCB Printed Circuit Board PDM Process Device Manager LDS 6 Operating Instructions 01 2009 A5E00295894 05 List of Abbreviations LDS 6 B 1 List of Abbreviations Abbreviation symbol Explanation pF Picofarad 10 12 Farad PLC Programmable Logic Controller PN Pressure Nominal ppm Parts per million Pt Platinum PTFE Polytetrafluoroethylene plastic commercial name e g Teflon QAL Quality Assurance Level RAM Random Access Memory s Seconds SELV Safety Extra Low Voltage SMA Sub Miniature A a coaxial connector type SW Short Wave Fibre for oxygen analyzers TCP IP Transmission Control Protocol Internet Protocol a ref
43. ary channel option Supplementary channel option Figure 2 7 Typical transmitted light setup of LDS 6 in situ A feature of the standard applications defined in the ordering data of the LDS 6 is that the typical process conditions are well known and documented and that the guaranteed measuring properties can be proven by reference installations If you cannot find your application among the standard applications please contact Siemens We will be pleased to check your possible individual application of the LDS 6 You can find an application questionnaire on the LDS product sites on the Internet To avoid contamination of sensor openings on the process side clean gaseous purging media are used such as instrument air N2 or steam Purging air tubes on the sensor heads which slightly penetrate into the process gas stream define the effective measuring path length Transmitter unit Central unit inlet Temperature Hybrid cable sensor max length 700 km Supplementary __ Sample gas channel option Supplementary channel option ensor connecting cable __ Receiver Figure 2 8 Typical transmitted light setup of LDS 6 in bypass The LDS 6 can measure in both the transverse and longitudinal directions of the process gas flow In certain cases the process conditions make it necessary to condition the sample gas stream in a bypass line with respect to process temperatu
44. basic version You can assign one of the control functions listed in Table Op 5 to each input The binary input should normally be energized De energizing the binary input will result in signalling of a fault Up to four relays can be configured in one menu Switching to further menus and thus to further relays is always carried out by pressing the fifth last soft key Continue 56 LDS 6 Operating Instructions 01 2009 A5E00295894 05 Operation 4 3 Analyzer Functions Note Every change to the configuration of the binary inputs should always be stored in the user data memory using function 75 If this is not done there is a risk that a previous undesired configuration is called when selecting Load user data Table 4 9 Op 5 Binary Input Assignments Function External Fault Temperature Remarks Binary input should be de energized upon fault signal from temperature transducer External Fault Pressure Binary input should be de energized upon fault signal from pressure transducer External Fault Purging Binary input should be de energized upon fault signal from purging equipment External Fault General Binary input should be de energized upon fault signal from unspecified equipment External Maintenance Request Temperature Binary input should be de energized upon maintenance request signal from temperature transducer External Maintenance Reques
45. ber of analyzer Software Package Version Version number of the application specific configuration software OS Version Version number of the Windows CE operative system running in the analyzer CE Software Version number of the LDS 6 specific software CE Driver Software Version number of the driver software Analyzer uC Drv Software Version number of the software running on the main micro controller Channel uC Drv Software Version number of the software running on the measurement channel micro controller Opto uC Drv Software Version number of the software running on the opto module micro controller Chan FPGA Firmware Version number of the firmware running on the measurement channel FPGA Opto FPGA Firmware Version number of the firmware running on the laser controller FPGA Ref FPGA Firmware Version number of the firmware running on the reference channel FPGA Operating Instructions 01 2009 A5E00295894 05 49 Operation 4 3 Analyzer Functions 2 Diagnostics Values You can use this function to display internal diagnostic values These may be of interest when assessing faults or for adjustment operations 2 Diagnostics Val Chi Nh The absolute transmission is expressed in arbitrary units Absolute Transmission The relative transmission is expressed as a percentage of the nominal value 101 3 Units ma The temperature and pressure reflect the measured or set conditions at
46. by are registered trademarks of the Siemens AG The remaining trademarks in this publication may be trademarks whose use by third parties for their own purposes could violate the rights of the owner Disclaimer of Liability We have reviewed the contents of this publication to ensure consistency with the hardware and software described Since variance cannot be precluded entirely we cannot guarantee full consistency However the information in this publication is reviewed regularly and any necessary corrections are included in subsequent editions Siemens AG Ordernumber A5E00295894 Copyright O Siemens AG 2004 Industry Sector 04 2009 2007 2008 2009 Postfach 48 48 Technical data subject to change 90026 NURNBERG GERMANY Content Operating Instructions 01 2009 A5E00295894 05 1 General Informations a E a ash tana dada 7 1 1 Information for our Customers c2 cceceececeeeeeeecaeceaeeeceeeeescaeceeeeeeesecaeaeeeeeeesesecaeeeeeeesesensieeeeeaaees 7 1 2 General Information 63s ia a8 ee esos A at eed eee ada 7 1 3 Special Information and Warnings ooooccononcccnnnaccccnonanancncnnn cnn cnn ncncnnno nn cn nan n EA rr rr nana i 8 1 4 Warranty CONOS ii 8 1 5 Deliver tafommalom a 8 1 6 Standards and Regulations irse 2 ahnen 8 2 Technical Information 2 52 2 ne A ha ee 9 2 1 General D amp seription 2 4 2222 em air IH RN Anker 9 2 2 DESIGN un ee a a plana AA A liada chona 13 2 3 OperatingiPrinciplei 2 ea ia ea 19 2
47. cables of type JE LIYCY BD The cable length of the analog outputs depends on the load LDS 6 Operating Instructions 01 2009 A5E00295894 05 nstallation Guidelines 3 3 Electrical Connections SUB D 25F connector g M efg een 2190 RL A R 0 90 2xR 0 C bF 91 A Do a D D D 0 D OD o P OS Figure 3 2 Spark suppression on a relay contact The preceding figure shows an example of measure to suppress sparks on a relay contact Since the DSUB connector and the spacings on board and on connector are only suitable for detachable voltages signal and as the power is located outside this powers supply circuit must be SELV and the power must be limited according to EN61010 1 Table 13 or 14 when an over current protective device is used e The reference ground of the analog inputs is the housing potential e The analog outputs are floating also with respect to one another e The interface cable must be screened and connected to housing potential The cable screen must be connected with a large area contact to the screen of the DSUB plug The conductor cross section should be at least 0 5 mm The interface cable must not be longer than 500 meters 1 640 ft e n the case of analyzers with two or three channels the analyzer sections are connected in parallel and the signal cables of each channel are independent Only the power plug is common to all channels
48. cision in determining the effective optical path length in the process might limit the overall precision of the measurement As the sensor openings toward the process normally need to be purged to keep them clean over a long period of time the thickness of the mixing zone between the purging medium and the process gas and its concentration distribution need to be considered In a typical in situ installation with some meters of path the influence of the purging gas on the effective path length can be neglected Path length and dust load are mutually influencing the higher the dust load in the process the shorter the max possible path length Note Individual requirements for the measuring point can make the utilization of special sensor equipment necessary The possibilities for adapting the sensors are e Different purging media such as instrument air ambient air nitrogen or steam e Different purging modes on process and sensor sides e Special materials of purging tubes and or sensor flanges e Cooling or heating of the sensors e EEx proof sensor configurations LDS 6 Operating Instructions 01 2009 A5E00295894 05 Installation Guidelines 3 3 1 Safety Information It is essential that you observe the given information and warnings Electrical Safety AXDANGER Certain parts inside the gas analyzer LDS 6 carry dangerous voltages The housing must be closed and grounded before switching on the analyzer Death
49. compensation the function 84 is not accessible 85 Path Length 85 Path Length Ch1_NHa 1 000 m You can use this function to set the length of the measuring path for the specific channel Please refer to the sensor manual for more information on measuring the path length 62 LDS 6 Operating Instructions 01 2009 A5E00295894 05 Operation 4 3 Analyzer Functions 86 Measurement Unit 86 Unit Ch1 NHs mg Nm EU You can use this function to set the unit for a specific Possible concentration units are ppm vol mg Nm3 EU or mg Nm3 US American standard component possible temperature units are C F or K 87 Dry Gas On Off You can use this function to display the dry value of a concentration following the subtraction of the water volume from the total volume of a gas 87 Dry Gas On Off Chi Nh Activation of this function is available for both applications where water vapor is calculated Dry Gas O internally in LDS 6 and applications where water vapor is set manually If this function is available in the current LDS 6 it can be activated in the adjacent display otherwise it is not possible to access function 87 88 Error On Off You can use this function to individually switch off the indication of maintenance requests and faults so that neither an entry in the logbook nor a status signal or external signal will take plac
50. cording to IEC 60227 or IEC 60245 and must be suitable for 70 C 158 F e The power cable must be routed separately from the hybrid cables Operating Instructions 01 2009 A5E00295894 05 29 nstallation Guidelines 3 3 Electrical Connections Detachable Cord Electrical Protection 30 The analyzer is supplied with an appliance plug which may only be connected to the power supply by qualified personnel The cross section of the conductors must be at least 1 mm2 The phase conductor must be connected to the identified position L Only detachable power supply cords tested by an accepted third party Lab accredited for the region where the unit is to be used is allowed This cord must be suitable for the rated current and limited in length This flexible cord must also be suitable for an ambient temperature of 70 C 158 F and is not allowed to be mounted in building installations As the kind of appliance inlet is only suitable for 70 C 158 F ambient temperature the power cord must be kept away with suitable means from surfaces of more than 70 C 158 F at max rated operation conditions It is not allowed to install a switch within the power supply cord e Acircuit breaker shall be part of the installation It must be provided in the immediate vicinity of the analyzer see rating plate for loading capacity It must also be labeled to correlate with the instrument LDS 6 Operating Instructions 01 2009 A
51. ction to the LDS 6 central unit by a so called hybrid cable max length 700 m e Stainless steel partially painted e IP65 degree of protection for sensor e Adjustable flanges with flange connection DN 65 PN 6 ANSI 4 150 lbs e Optional flameproof window flanges with dimensions DN 65 PN 6 DN 80 PN 16 ANSI 4 150 lbs other process interfaces available on request e Purging facilities on the process and the sensor sides configurable application with purging gas connections for Instrument air Purging air blower Steam Nitrogen Process gases to which the pressure equipment directive cat 2 does not apply e In combination with high pressure window flanges purging with instrument air or nitrogen is possible e Fast connectors for cleaning the measurement openings and the sensor window LDS 6 16 Operating Instructions 01 2009 A5E00295894 05 Technical Information 2 2 Design e Optional Ex protected version according to ATEX II 1GD T135 C EEx ia IIC T4 Cert No DEMKO 06 ATEX 139648X Certificates according to IEC and TIIS are also available e Sensor types CD 6 and CD 6C are compliant with the pressure equipment directive Note The sensors are described in detail in separate manuals which is part of their delivery ATEX sensors The sensors are also available in an ATEX version see also separate user manual These have very low power electronics and are intrinsically safe For use in areas wit
52. d independently 77 Store Fault Ch1 NHs Analog Output To 3 1 mA You can use this function to set to one of the following modes default This value has been set in the previous screen the latest measured value before the error occured 3 1 mA 3 mA if the NAMUR mode is active for the analog output in screen 70 and 1 mA otherwise off This setting is used to ignore the current fault state for this error group The analyzer continues to show the latest measured value Use soft key 1 to switch between the different modes When an alarm occurs and the analog output is set to the latest measured value or 3 1 mA the display of the concentration value in the measuring screen will be suppressed LDS 6 Operating Instructions 01 2009 A5E00295894 05 59 Operation 4 3 Analyzer Functions 79 Codes Input Levels You can use this function to replace the factory set codes 111 for level 1 and 222 for level 2 with your own values The value 000 disables all code settings and grants unrestricted access 79 Codes Ch1 NHs to the corresponding access level Code 4 111 Code 2 222 80 Analyzer Test You can use this function to test some output functions of the analyzer The analyzer test comprises 80 Analyzer Test Ch1 NHs Keyboard Test Analog Test Relay And Binary Test gt e Keyboard test Analyzer specific gt e Relay and binary test
53. e 88 Error On Off Ch1 NH3 a 1 Optomodule Fault S2 Laser Current Fault 3 Signal Quality Fault 4 E Compensation Temp Limit Continue gt 89 Ethernet Chip On Off You can use this function to enable or disable a communication via ethernet This action 29 Chi NHE requires code level 3 and the setting must be saved to the registry to make it persistent Ethernet enabled i Save registry O See also Maintenance Request Alarm Page 67 LDS 6 Operating Instructions 01 2009 A5E00295894 05 63 Operation 4 4 Watch Dog 4 4 Watch Dog In the unlikely event that the software in LDS 6 should crash it will reboot with the help of a watch dog The instrument will be down for approximately 3 minutes if this should happen and then measure normally again It is very unusual that this should happen but if it does the watchdog prevents the system from going down and stay down From this point normal startup behaviour Module crash 0 16 s approx 1 min approx 1 min Figure 4 4 Illustration of the events during a software crash LDS 6 64 Operating Instructions 01 2009 A5E00295894 05 Alarms 5 1 Alarm Response LDS 6 is able to recognize and alarm for irregularities in its functions There are five types of alarms that can be triggered depending on the nature of the error e Maintenance request alarm e Faults alarm e Transmission alarm e Limit alarm e Function
54. e and then select function 82 Pressure Correction Press the first soft key to change the text External Analog In to Manual Setthe manual value to the preferred value Press MEAS to return to measurement screen Press MEAS again to loose privileges The procedure has to be repeated for other channels It is not necessary to repeat it for more than one component per channel since it is a channel specific function LDS 6 Operating Instructions 01 2009 A5E00295894 05 Maintenance and Service 6 7 Recontiguration of the Path Length 6 7 Reconfiguration of the Path Length 1 Starting from Measuring window press the soft key next to the component for which you want to change the path length Press the soft key for Configuration Enter the password for privilege level 2 the password is factory set to the value 222 but may have been replaced by a new one Press Continue twice and then select function 84 Path Length 2 Press first soft key to edit the path length Enter the new path length and press ENTER 3 Press MEAS to return to measurement screen Press MEAS again to loose privileges 4 The procedure has to be repeated for other channels It is not necessary to repeat the procedure for more than one component per channel since this function is a channel specific function LDS 6 Operating Instructions 01 2009 A5E00295894 05 75 Spare Parts List 7 1 7 1 1 See also LDS 6 Compatibility
55. e or minimum detection limit whichever is largest due to calibration gas uncertainties for HF all versions HCI all versions H20 O2 combination with temperature Better than 1 2 of the measured value or minimum detection limit whichever is largest Negligible Negligible No calibration required due to internal reference cell ppmv vol mg Nm EU mg Nm3 US Digital concentration display 5 digits with floating decimal point Class 1 safe to the eye CE marking T V MCERTS IP20 to EN 60529 177 x 440 x 380 mm Approx 13 kg horizontal LDS 6 Operating Instructions 01 2009 A5E00295894 05 Technical Data Table 8 5 Electrical characteristics Electrical characteristics Power supply Power consumption EMC Electric safety Fuse specifications Table 8 6 Dynamic response Dynamic response Warm up time at 20 C ambient air temperature Response time Integration time Table 8 7 Influencing variables Influencing variables Ambient temperature of measured value Atmospheric pressure Gas pressure compensation Pressure compensation oxygen high pressure CO CO2 all other gases except O2 low pressure Power supply changes Tilting Operating Instructions 01 2009 A5E00295894 05 8 1 Central Unit 100 240 V AC 50 60 Hz automatically adapted by the system with a 3 channel central unit an additional external power supply 24 V DC 50 VA is includ
56. ed in the scope of delivery 50 W According to EN 61326 and standard classification of NAMUR NE21 According to EN 61010 1 overvoltage classification II 100 240 V T2 5L250V Approx 15 min Better than 3 sec dependent on application 1 100 sec selectable lt 0 5 10 K Negligible Recommended for all gases except O2 low pressure 0 1 0 5 kPa 0 095 0 14 kPa 0 095 0 105 kPa lt 1 30 V lt 1 for non horizontal mounting of the central unit lt 15 85 Technical Data 8 1 Central Unit 86 Table 8 8 Electrical inputs and outputs Electrical inputs and outputs Number of measurement channels Analog outputs Analog inputs Binary outputs Binary inputs Communication interface Table 8 9 Climatic conditions Climatic conditions Temperature range during operation during transportation and storage Atmospheric pressure Humidity 1 3 optional 2 per channel 4 20 mA floating ohmic resistance max 750 Q 2 per channel designed for 4 20 mA 6 per channel with changeover contacts configurable 24 V AC DC 1 A floating 6 per channel designed for 24 V floating configurable Ethernet 10BaseT RJ 45 5 45 C 41 113 F 40 70 C 40 158 F 80 110 kPa lt 85 RH above dew point LDS 6 Operating Instructions 01 2009 A5E00295894 05 Technical Data 8 2 Hybrid and Sensor Cables Table 8 10 Gener
57. ent 2 if present Component 1 Non floating analog inputs 91 ESD guidelines A 1 ESD guidelines Definition of ESD All electronic modules are equipped with large scale integrated ICs or components Due to their design these electronic elements are highly sensitive to overvoltage and thus to any electrostatic discharge The electrostatic sensitive components modules are commonly referred to as ESD devices This is also the international abbreviation for such devices ESD modules are identified by the following symbol CAUTION ESD devices can be destroyed by voltages well below the threshold of human perception These static voltages develop when you touch a component or electrical connection of a device without having drained the static charges present on your body The electrostatic discharge current may lead to latent failure of a module that is this damage may not be significant immediately but in operation may cause malfunction Electrostatic charging Anyone who is not connected to the electrical potential of their surroundings can be electrostatically charged The figure below shows the maximum electrostatic voltage which may build up on a person coming into contact with the materials indicated These values correspond to IEC 801 2 specifications LDS 6 Operating Instructions 01 2009 A5E00295894 05 93 ESD guidelines A 1 ESD guidelines Voltage in kV kv A 16 O S
58. erence model for communication on the Internet uC Microcontroller V Volts Vol Volume percent A Difference delta Q Ohms Operating Instructions 01 2009 A5E00295894 05 97 Index A Alarms 65 Analyzer functions Logbook 50 Analyzer status 49 Application 11 Applicational setup 20 Approval 27 B Benefits 10 C Calibration 51 Central unit Configuration 55 Connections 90 Design 13 Dimensions 89 Technical specifications 83 Cleaning 71 Communication 63 configuration 55 Configuration Analyzer test 60 Codes 58 Communication settings 57 Compensation of side effects 61 73 Data handling 58 Device setup 20 Inputs and outputs 55 Cross duct sensor Design 16 D Dimensional drawings 89 Display and control panel Design 14 Functions 41 LDS 6 Operating Instructions 01 2009 A5E00295894 05 E Electric connections Hybrid cable 31 Power supply 29 Electrical Connecions 29 Electrical connection 3 Channel system 35 Electrical connections Connectors 90 Signal cable 32 Error messages 67 ESD guidelines 93 F Functions 47 G Guidelines ESD guidelines 93 H Hybrid cable 18 87 Installation 28 L Laser diode spectrometer Functional principle 19 Logbook 50 65 M Maintenance 71 Measurement Influencing variables 23 Measuring ranges 52 99 Index O Operation Analyzer functions 41 Functional principle 21 Overview
59. h potentially explosive atmosphere a barrier box must be installed additionally For further information regarding the ATEX option please refer to the separate ATEX manual for LDS 6 Parts in contact with the process gases The sensors normally do not come into contact with the process gas since purging with a gaseous media is applied at the process side Stainless steel purging gas tubes in front of the sensor windows immerse slightly into the process gas and thus limit the purging volume Special materials such as Hastelloy plastics PP and ceramics are available on request LDS 6 Operating Instructions 01 2009 A5E00295894 05 17 Technical Information 2 2 Design Hybrid and sensor cables A combination of fiber optic cables and twisted copper wires connects the sensors to the central unit The hybrid cable connects the central unit with the transmitter unit of the sensor the sensor cable connects the transmitter and receiver units of the sensor 1 Twisted pair of wires 2 Multimode fiber 3 Singlemode fiber Figure 2 5 Connections of the hybrid cable For installation in EEx protected environments the legislative regulations have to be complied with such as the spatial separation of intrinsically safe from non intrinsically safe cables e Max 700 m between central unit and measuring point e Hybrid and sensor cables Multimode fiber optic cable provided with SMA connections for transmission of the measured signal
60. ideration that it should be easy to mount or dismount and that the sensors lid should be able to open fully Safe working space around the sensors are also needed guardrails ladders etc The figure below illustrates the process for installation of flanges Operating Instructions 01 2009 A5E00295894 05 37 nstallation Guidelines 3 6 Installation of Flanges Alignment procedure Figure 3 7 Usage of the items in the flange alignment kit 1 2 3 4 Light source Alignment flanges Aiming tool Process flange to be aligned This is the alignment procedure 1 a A O N O Weld the flange tubes loosely on each side of the wall Do not weld them so hard that the angle of the tubes can not be adjusted with a hammer Mount the light source on one flange and the aiming tool on the other flange Turn on the light source Adjust the focus on the aiming tool until the light spot from the light source is sharp Adjust the angle of the process flange tube using for instance a rubber hammer until the light spot is centered on the cross hair on the aiming tool Weld the aligned flange tube permanently into this position 7 Shift light source and aiming tool and repeat the procedure above for the opposite flange 38 until the other tube also is permanently welded Note It is important that the flanges are aligned from both sides Therefore remember to shift light source and aiming tool and
61. ignals within the range of 2 21 mA are accepted The limits normally mark the span in which temperature compensation is possible If the temperature signal exceeds the specified limits this will be signalled as a maintenance request The parameters for the temperature correction in the corresponding factory function are component specific Selection of the temperature mode in function 83 is channel specific The temperature correction can be switched off 84 Interference Correction 84 Interf Corr Ch1 NHs C02 Correction Active a 02 Correction Active a H20 Correction Active a You can use this function to activate or deactivate correction of cross interference from other gases The gases that require corrective measures depend on the application and only the appropriate ones are visible in screen 84 The function should be turned off when calibrating dry gas If the gas is not calculated by the instrument itself a gas concentration value should be entered manually This value should be the typical or average concentration of the interfering gas 84 H20 Correction 84 H20 Correction Ch1 NHs H20 Correction Active a You can use this function for applications where a water correction is indicated If the water concentration is not measured by the instrument itself a water concentration value can be entered manually otherwise this function is blocked In applications without water
62. ing screen using ESC or MEAS the symbol MCODE in the status line shows that the analyzer is still in service mode The analyzer can be coded again O CODE by pressing the MEAS key once more thus entering Measuring Mode Simultaneously with the symbol WCODE the symbol CTRL Function control appears in the status line showing that the analyzer is not in measuring mode External signaling via a relay contact is then possible if a corresponding relay has been configured with CTRL under function 71 Fast Selection of Functions 46 A Power user input has been incorporated to allow immediate switching from the measuring display to the desired function display if frequent inputs are necessary It is then possible to directly access the desired function by bypassing the menu levels The Power user input can only be started from the Measuring Screen and comprises the following input steps e Enter number of desired function in measuring screen using the digit keys e Press the soft key next to the desired component e If you do not have the required privileges to change the desired function you will be requested to enter the password For a channel with two components on a three channel instrument you must first press the soft key next to the desired channel and thereafter in the next window press the soft key next to the desired component LDS 6 Operating Instructions 01 2009 A5E00295894 05 Operation 4 3 Analyzer Funct
63. ion measurements can be carried out without any negative impact Under good conditions particle densities up to 100 g Nm can be handled by the LDS 6 Varying dust loads are compensated by scanning the laser over the gas absorption line and the current background At a scan position next to the absorption line the instrument can see only absorption caused by the dust load where at the line center the signal is composed of the molecular absorption and the continuous unspecific background absorption With the wavelength modulation technique the actual measured transmission is always compared with the baseline After signal processing phase sensitive application delivers a signal only from the molecular line free of background The influence of a high dust load is complex and depends on the path length and particle size The optical damping increases at longer path lengths Smaller particles also have a large influence on the optical damping With a combination of high dust load long path length and small particle size the technical support at Siemens should be consulted The temperature influence on the absorption line strength is compensated by a correction factor determined during calibration A temperature signal can be fed into the instrument from an external temperature sensor This signal is then used to correct the influence of the temperature on the observed line strength If the temperature of the sample gas remains constant it is alterna
64. ions 4 3 Analyzer Functions 4 3 1 Summary of Analyzer Functions The analyzer functions can be divided into the following three categories e Analyzer specific functions act on all channels and components of the analyzer independently from the analyzer component through which the function was called e Channel specific functions act on all components of the corresponding channel independently from the analyzer component through which the function was called e Component specific functions act on a single component and can only be called through this LDS 6 Operating Instructions 01 2009 A5E00295894 05 47 Operation 4 3 Analyzer Functions The following table summarizes the functions of the analyzer Table 4 2 Summary of Analyzer Functions Main menu item section Function Function designation 1 2 3 number 5 2 1 1 Analyzer Configuration x x Analyzer Status 2 Diagnostics Values x 3 Logbook x 4 Display Measuring Ranges x 5 2 2 20 Zero Calibration x Calibration code 3 21 Span Calibration x 5 2 3 41 Define Ranges x Measuring Range code 1 5 2 4 50 Response Time x Parameters code 1 51 Limits x 52 Transmission x 53 Status Messages x 55 Select Display Digits x 56 LCD Contrast x 58 Date Time x 60 Setup Logbook x 5 2 5 70 Analog Output x Configuration code 2 71 Relay Outputs x 72 Binary Inputs x 73 Communication 74 Reset x 75 Save Load Data x 77 Store Analog Output x 79 Codes Inp
65. is the same as for one and two channel systems Also the ATEX version of the three channel LDS 6 is using an external power supply leaving the sensors unaffected when a third channel is added The external power supply is connected by adding the pins into two corresponding screws of the 6 pole socket at the back of the central unit as seen in the following figure Figure 3 4 Schematics of the external power supply Fuses Central unit 100 240 V T2 5L250V External power supply 100 240 V T1 25L250V LDS 6 Operating Instructions 01 2009 A5E00295894 05 35 nstallation Guidelines 3 4 Three Channel System 3 4 2 Three Channel Hybrid Cable Connection In a three channel instrument the electrical wires in the hybrid cables are connected according to the following figure 6 pole screw socket for 24 V external power supply 2 poles per sensor Note that the Zz polarity is not important for non ATEX use LLL whereas it is for ATEX Ge ZZ CTE i Ul AA Figure 3 5 Connection of electrical cables for a 3 channel unit caution The instrument is not designed to feed 3 sensors using the internal power supply LDS 6 Operating Instructions 01 2009 A5E00295894 05 nstallation Guidelines 3 5 3 6 LDS 6 3 5 Flange Installation Requirements Flange Installation Requiremen
66. ix freely configurable binary inputs per channel for signalling faults or maintenance requests from external temperature or pressure transducers or sensor purging failure e Six freely configurable binary outputs per channel signalling of faults maintenance requirements function control transmission limit alarms concentration limit alarms store analog output Communication Network connection Ethernet 10Base T for remote diagnostics and maintenance The LDS 6 can be operated remotely via the Ethernet port with a PC running Windows 95 98 ME or Windows NT 2000 XP It is also possible to connect the LDS 6 via modem to the public telephone net In that case an LDS 6 LAN modem kit is required Any external connection requires the optional software LDSComm LDS Communication Client to be installed on the remote computer All aspects of LDS 6 can be controlled in this way For the operation of the LDS 6 using LDSComm software refer to the LDSComm Manual A5E02183317 Maintenance and fault messages LDS 6 outputs different warnings via relays e Need for maintenance measured value is not influenced e Operating error measured value might be influenced LDS 6 Operating Instructions 01 2009 A5E00295894 05 15 Technical Information 2 2 Design Cross duct sensors Figure 2 4 Sensor CD 6 transmitter or receiver unit e In situ cross duct sensors configured as transmitter and receiver unit connected via sensor cable e Conne
67. mark the span in which pressure compensation is possible If the pressure signal exceeds the specified limits this will be signalled as a maintenance request The parameters for the pressure correction in the corresponding factory function are component specific Selection of the pressure mode in function 82 is channel specific The pressure correction can be switched off 83 Temperature Correction You can use this function to select one of the following Correction for temperature using an external temperature sensor via analog 83 Temp Corr Ch1 Nhs input 1 example as shown on the adjacent display Mode Manual o Correction for temperature using a manual temperature value e Correction for temperature using the internally calculated process temperature MO EM C This is only possible if the LDS 6 is set up to measure the temperature of the we measuring point Limits 0 00 1000 C Manual Value 300 0 C Ana Inp 1 4 20mA NAMUR O LDS 6 Operating Instructions 01 2009 A5E00295894 05 61 Operation 4 3 Analyzer Functions The selected measuring range corresponds to the analog input signal range of 4 20 mA No other input signals can be used If the temperature sensor is configured according to the NAMUR standard the NAMUR mode should be selected for the analog input signal In that case only input signals within the range of 3 8 20 mA are accepted If the NAMUR mode is not selected input s
68. n This manual contains the information required for the intended use of the described product It is addressed to technically qualified personnel who are specially trained or who have the relevant knowledge of automation technology measuring and control systems Knowledge and technically correct implementation of the safety notes and warnings contained in this manual are required for safe installation and commissioning as well as for safety during the operation and maintenance of the described product Only qualified personnel have the required professional knowledge for correctly interpreting the generally valid safety notes and warnings in this manual in each specific case and to act accordingly This manual is an inherent part of the scope of delivery despite the fact that it can be ordered separately for logistic reasons Due to the variety of technical details it is not possible to consider every single detail for all versions of the described product and for every conceivable case in the set up operation maintenance and use in systems For further information or in the case of problems which are not covered in enough detail in this document please request the required information from your local or responsible Siemens regional office Note In particular before using the device for new research and development applications we recommend that you first contact your Siemens representative or our application department to discu
69. n 88 there is no reaction at the interface This applies to the analog as well as to the relay outputs 4 Display Measuring Ranges 4 Disp Meas Range Ch1 NHs Start End value 0 00 100 0 mg Nm3 You can use this function to display measuring ranges However you cannot use this menu to modify the measuring ranges To do so use function 41 The follwoing parameters are displayed Start Value This value corresponds to a 4mA current on the analog output End Value This value corresponds to a 20mA current on the analog output See also Alarms Page 65 50 LDS 6 Operating Instructions 01 2009 A5E00295894 05 Operation 4 3 Analyzer Functions 4 3 3 Calibration The LDS 6 is calibrated when delivered and does not normally require on site recalibration Please consult Siemens support if recalibration is needed CAUTION Never use functions 20 and 21 without having contacted Siemens service staff first Inappropriate use of these functions may seriously affect the accuracy of the analyzer Access to the calibration functions requires access code 3 20 Zero Calibration You can use this function to calibrate the zero of a measuring range When zero calibration is triggered the current measurement value is stored This value will 20 Zero Calib Ch1_NHa thereafter always be subtracted from the measurement signal Zero Calibration Active Only start the c
70. n range Press MEAS to return to measurement screen Press MEAS again to loose privileges Hardware connections Connect the 4 20 mA wires to pins 3 and 11 on the 15 pin trapezoidal plug D SUB plug at the rear The conductor cross section should be gt 0 5 mm The procedure has to be repeated for other channels It is not necessary to repeat it for more than one component per channel since it is a channel specific function Starting from Measuring Window navigate to the component or channel for which you want to change the compensation mode Press the soft key for Configuration Enter the password for privilege level 2 the password is factory set to the value 222 but may have been replaced by a new one Press Continue twice and then select function 83 Temperature Correction Press the first soft key to change the text External Analog In to Manual Set the manual value to the preferred value Press MEAS to return to measurement screen Press MEAS again to loose privileges The procedure has to be repeated for other channels It is not necessary to repeat it for more than one component per channel since it is a channel specific function Operating Instructions 01 2009 A5E00295894 05 73 Maintenance and Service 6 6 Reconfiguration of Pressure Compensation 6 6 Reconfiguration of Pressure Compensation Manual to External 1 Starting from Measuring Window navigate to the component or cha
71. nnel for which you want to change the compensation mode Press the soft key for Configuration Enter the password for privilege level 2 the password is factory set to the value 222 but may have been replaced by a new one Press Continue twice and then select function 82 Pressure Correction 2 Press the first soft key to change the text Manual to External Analog In 3 Set the measuring range to the pressures that correspond to the analog input signal 4 mA and 20 mA respectively Set the limits to suitable values If the temperature signal exceeds the limits a fault will be triggered Note that the limits cannot be set outside a certain range 5 Press MEAS to return to measurement screen Press MEAS again to loose privileges 6 Hardware connections Connect the 4 20 mA wires to pin 4 and 12 on the 15 pin External to Manual 1 a A ON 74 trapezoidal plug D SUB plug at the rear The conductor cross section should be gt 0 5 mm The procedure has to be repeated for other channels It is not necessary to repeat it for more than one component per channel since it is a channel specific function Starting from Measuring Window navigate to the component or channel for which you want to change the compensation mode Press the soft key for Configuration Enter the password for privilege level 2 the password is factory set to the value 222 but may have been replaced by a new one Press Continue twic
72. nsmitted light sensors LDS 6 Operating Instructions 01 2009 A5E00295894 05 9 Technical Information 2 1 General Description Benefits The in situ gas analyzer LDS 6 is characterized by a high availability and unique analytical selectivity and by a broad scope of suitable applications LDS 6 enables the measurement of one or two gas components or if desired the gas temperature directly in the process e With high levels of dust load e In hot humid corrosive explosive or toxic gases e In applications showing strong varying gas compositions e Under harsh environmental conditions at the measuring point e Highly selective i e mostly without cross sensitivities LDS 6 properties e Little installation effort e Minimum maintenance requirements e Extremely rugged design e High long term stability through built in maintenance free reference gas cell field calibration is unnecessary e Real time measurements Moreover the instrument provides warning and failure messages upon e Need for maintenance e Erroneous reference function e Bad signal quality e Exceeding of a lower or upper alarm level for the measured variable e Transmitted amount of light exceeding an upper or lower limit LDS 6 10 Operating Instructions 01 2009 A5E00295894 05 Technical Information Application 2 1 General Description The LDS 6 laser gas analyzer is suitable for a wide range of applications The most common of them are
73. on a location which is dust free and as free as possible from vibrations The distance between the central unit and the measurement point i e the sensor may not exceed 1000 meters 3 280 ft for the non ATEX version and 600 m 1 970 ft for the ATEX version During operation the permissible surrounding air temperature is 5 C 41 F to 45 C 113 F with a relative humidity of maximum 85 non condensing around the central unit Also ensure that the unit is not exposed to direct solar radiation If these conditions can t be fulfilled the LDS 6 must be installed in a cabinet with controlled environment Note As condensing is normally a problem when moving the device from outside to inside a building it is recommended that the device should be adapted to room climate for a couple of hours before starting it The back of the unit must be freely accessible There should be at least 10 cm 4 of free space behind the LDS 6 to accommodate the signal and hybrid cables To meet the safety requirements for air convection and cooling there must be a free space of at least 5 cm 2 above and at least 3 cm 1 1 4 below LDS 6 For detailed information on the sensor installation please refer to the sensor manual corresponding to your system setup LDS 6 Operating Instructions 01 2009 A5E00295894 05 nstallation Guidelines Hybrid Cables 3 3 Electrical Connections The hybrid cables should be installed such that they a
74. onent Contact service concentration Signal amplitude too low when measuring Contact service temperature S6 External Fault External signaling Check external equipment S7 Supply Voltage Channel Internal power failure Contact service S8 Supply Voltage Analyzer Internal power failure Contact service S9 Serial EEProm Internal EEProm failure Contact service 11 FPGA Channel Electronics failure in data acquisition unit Contact service 12 CAN Analyzer Electronics failure in internal communication Contact service 13 CAN Channel Electronics failure in internal communication Contact service 14 Data Flow Analyzer Electronics failure in internal communication Contact service LDS 6 68 Operating Instructions 01 2009 A5E00295894 05 Alarms 5 4 Transmission Alarm 5 4 Transmission Alarm The alarm TR appears either if the transmission falls below a limit defined by function 52 or if it exceeds a fixed limit The following table shows the possible reasons that can set it Table 5 4 Transmission Alarms Possible Causes Action Dirty windows Clean windows Sensors not aligned Align sensors Purging not working Make sure purging is working Clean purging tubes Transmission too high Adjust the potentiometer of the detector 5 5 Limit Alarm The limit alarm LIM appears if the signal exceeds the limits set by function 51 5 6 Function control alarm The function control CTRL is activa
75. onse by functions 71 and 77 will not change until the fault message has been acknowledged If the cause that triggered the fault alarm has not been corrected a new message will appear directly as soon as the first fault message is acknowledged Every time a new message occurs the report stored in the logbook is shifted by one memory location A total of 40 locations are available and the oldest of the 40 reports is deleted when a new one occurs A power failure will delete all reports LDS 6 Operating Instructions 01 2009 A5E00295894 05 65 Alarms 5 1 Alarm Response Function 60 can be used to switch off the logbook and also to delete the messages stored in it The output of messages can become inconvenient particularly during test runs Therefore this function can be switched off using function 88 It is not recommended to use this facility during normal operation Relays If the relay outputs of the analyzer have been configured accordingly it is possible to output a signal when an alarm occurs Stored Value The analog output can be set to the last measured value or to 3 mA when an alarm occurs function 77 This response signal is only possible for Fault alarm Transmission alarm Transmission pending and Function control alarm See also Configuration Page 55 LDS 6 66 Operating Instructions 01 2009 A5E00295894 05 Alarms 5 2 Maintenance Request Alarm
76. ool If this operation is performed properly it will not affect the alignment of the sensor Calibration Verification For ammonia NHs a calibration check of LDS 6 analyzer can be done using a reference cell arrangement containing a mixture of the measurement gas and nitrogen The unit should be used in conjunction with the 2 meter hybrid cable that is delivered with each calibration verification kit This calibration check is described in a specific instruction LDS 6 Operating Instructions 01 2009 A5E00295894 05 Maintenance and Service 6 5 Reconfiguration of Temperature Compensation 6 5 Reconfiguration of Temperature Compensation Manual to External 1 Starting from Measuring Window navigate to the component or channel for which you want to change the compensation mode Press the soft key for Configuration Enter the password for privilege level 2 the password is factory set to the value 222 but may have been replaced by a new one Press Continue twice and then select function 83 Temperature Correction Press the first soft key to change the text Manual to External Analog In 3 Set the measuring range to the temperatures that correspond to the analog input signal External to Manual 1 a A ON LDS 6 4 mA and 20 mA respectively Set the limits to suitable values If the temperature signal exceeds the limits a fault will be triggered Note that the limits cannot be set outside a certai
77. or load user specific data in the user data memory on the EEPROM Saving of data should always be carried out after a successful starting up of the system All individual settings are then saved and can be recalled if necessary load user data This is significant if repairs or maintenance are to be carried out on an analyzer or if new parameter settings are to be tried 75 Erase Section Ch1 NHs Erase Work Section o Erase User Section o You can use this function to erase the working area data and the user data on the EEPROM The factory data can never be erased 58 LDS 6 Operating Instructions 01 2009 A5E00295894 05 Operation 4 3 Analyzer Functions Main Memory Parameter Memory RAM EEPROM Fct 75 Factory Data After every change Working Area Current Operations Figure 4 3 A summary of the interactions between RAM and EEPROM The basic status of the analyzer factory settings can be reestablished using the function Load Factory Settings function 75 77 Store Analog Output 77 Store Ch1 NHs Store Fault gt Store Transmission gt Store Function Control Store Trans Pending gt Default 0 00 ppm You can use this function to define the response of the analog output with certain alarms The response for fault S transmission alarm TR for start up function control CTRL and transmission pending can be define
78. ousing free of wear and corrosion e Easy operation with a numerical keypad and menu prompting Certified versions for emission monitoring 12 The LDS 6 is available as certified instrument for emission monitoring of NH3 NH3 H20 H20 HCI HCI H20 The certificates are issued by TUV for Germany and MCERTS for the United Kingdom For conducting regular linearity and calibration checks test kits for ammonia water and HCI should be used These kits can be ordered separately as instrument accessories For new analyzer orders the NH3 NH3 H20 and H20 kits named Version 2 must be ordered In case of doubt or for already installed analyzers please contact Siemens for spotting the correct kit version LDS 6 Operating Instructions 01 2009 A5E00295894 05 Technical Information 2 2 Design 2 2 Design The gas analyzer LDS 6 consists of a central unit and up to three in situ sensors The connection between the central unit and the sensors is established by a so called hybrid cable which contains optical fibers and copper wires An additional cable connects the transmitter and receiver parts of the cross duct sensor Central unit The central unit is housed in a 19 rack with 4 holders for mounting in a hinged frame in racks with or without telescopic rails The LDS 6 operates as an independent unit powered by a 100 240 V AC main power supply LL Ga Figure 2 2 CentralUnit LDS 6 Operating Instructions 01 2009 A5E00295894 05 13
79. output of negative values on the measuring screen 56 LCD Contrast You can use this function to adjust the display contrast If the contrast is maladjusted you can re establish the factory settings by pressing the third soft 56 LCD Contrast Ch1 NHs key Basic setting Brighter gt If the LCD contrast is extremely maladjusted and if the analyzer is in measuring mode you can parker e also re establish the basic setting by pressing the following key sequence 8888 ENTER In addition you can carry out an LCD test by pressing the fourth soft key Test Various test Basic Setting o patterns are then shown in succession The test can be stopped by pressing ESC Test o 58 Date Time You can use this function to set the actual date and time The analyzer has a system clock which is not protected against power failure not a real time 58 Date Time Ch1_NHa New Date dd mm yy 24h da tot 64043 yy y New Time hh mm 24 h 14 44 Set Clock o Actual Date Actual Time 01 04 2004 14 44 clock The clock is set at 01 01 00 00 00 when the analyzer is started This function allows you to exactly set the date and time This is particularly important when you need to assign a specific point in time to faults stored in the logbook This can be helpful when troubleshooting After selection of this function an editing field appears in which you can enter day month and year as
80. pressure window DN80 PN16 A5E00534671 CD 6C Alignment kit A5E00534673 Table 7 5 Spare parts sensors electronics Product description Order no CD 6 Sensor electronic LW InGaAs Version 1 A5E00338540 CD 6 Sensor electronic LW InGaAs NEL Version 2 A5E01090409 CD 6 Sensor electronic LW HCI only Version 1 A5E00338552 CD 6 Sensor electronic LW HCI only NEL Version 2 A5E01090413 CD 6 Sensor electronic SW O2 only A5E00338533 CD 6C and FT 6 Sensor electronic Ippm H20 Version 1 A5E00854159 CD 6C and FT 6 Sensor electronic Ippm H20 NEL Version 2 A5E01090420 FT 6 Sensor FT 6 electronics A5E00338540 80 LDS 6 Operating Instructions 01 2009 A5E00295894 05 Spare Parts List 7 3 Ordering Instructions Please note that three of the LDS 6 sensor electronic spare parts are version dependent The PCBs are not affected but detector electronics are different Table 7 6 Spare parts ATEX Product description Order no LDS6 Barrier box 1 channel A5E00902922 LDS6 Barrier box 2 channels A5E00902926 LDS6 Barrier box 3 channels A5E00902927 CD 6 Sensor electronic ATEX SW A5E00338563 CD 6 Sensor electronic ATEX HCI A5E00853896 CD 6 Sensor electronic ATEX NH3 CO CO2 HF H20 A5E00338572 CD 6C and FT 6 Sensor electronic Ippm H20 ATEX A5E00924868 Window module quartz ATEX CD 3002 A5E00338594 LDS6 Entry seal for barrier box A5E00979661 See also List of Abbreviations Page 95
81. re pressure and or optical path length Further treatment of the process gas such as drying or dust precipitation is usually not necessary LDS 6 Operating Instructions 01 2009 A5E00295894 05 Technical Information 2 5 2 5 Measurement Principle Transmitter unit Central unit 6 Heating la A 8 ae option D gt 0 GHEE is E g a 2 g Hybrid cable E Do O max length 700 m 8 2 Pump 5 172 c wn Supplementary B channel option Supplementary channel option M Receiver Figure 2 9 Measuring configuration of LDS 6 with heated flow cell Measurement Principle Mode of operation LDS 6 The operation of LDS 6 is based on the fact that light propagating through a gas mixture will be absorbed according to Beer Lambert s law at certain narrow wavelength bands This is where the gases possess molecular transitions forming narrow absorption lines The light source in LDS 6 is a semi conductor laser tuned to an appropriate absorption line for the gas to be measured The laser light is spectrally much narrower than the gas absorption line and this together with a proper choice of absorption line will result in low interference from other gases The light is modulated both in frequency and in amplitude to facilitate detection on the second harmonic as well as elimination of contribution from spectrally broad absorption originating from dus
82. re protected from mechanical wear such as sharp edges or moving parts During installation always keep the protective tube in such a position that the single mode fiber connector is protected from dust The operating temperature for the cables is 40 to 80 C 40 to 176 F and the installation temperature is 20 to 80 C 4 to 176 F The bending radius of the cables may never be smaller than 100 mm 4 Note Throughout the entire installation keep the fiber ends protected by the protective tubes observe that these should only be removed by authorized personnel There are three kinds of cables used for the LDS 6 depending on the application e Hybrid cables for all types of systems except oxygen These are installed between the LDS 6 and the transmitter sensor e Hybrid cables for oxygen systems only also installed between the LDS 6 and the transmitter sensor e Loop cables same for all systems are installed between the transmitter sensor and the receiver sensor 3 3 Electrical Connections 3 3 1 Power Supply Connections General LDS 6 A WARNING The respective country specific standards for the installation of power systems with rated voltages below 1000 V must be followed Failure to observe these regulations may result in death personal injury and or damage to property e Check that the local voltage agrees with that specified on the label on the analyzer e The cable must be tested ac
83. repeat the procedure from the other side as well It is also important that the sensor flanges are oriented in such a way that the spring loaded bolts are located in the lower section of the flange LDS 6 Operating Instructions 01 2009 A5E00295894 05 nstallation Guidelines Flange Alignment Deviation 3 6 Installation of Flanges When both flange tubes are permanently fixed the deviation from the theoretical optical path must not exceed 2 This is because the alignment flanges can be adjusted maximum 2 See the figure below min 150 mm Approx 25 40 mm LD Maximum deviation 22 a Y i 3 gt nn Wall thickness including insulation Measurement A to be measured after installation Figure 3 8 The required precision of the flange Customer flange alignment alignment The aim should always be to achieve the best possible alignment of the flanges i e to get the center of the dot as close as possible to the center of the crosshair on the alignment tool This will allow for small changes for example caused by thermal movement later on For a normal installation using standard 400 mm purging tubes the alignment is usually good enough if the center of the dot is within 3 mm from the center The lines closest to the center of the crosshair are about 3 mm from the center Note If long purging tubes will be used a greater effort should be made to
84. s great care should be taken when cleaning Only outer surfaces may be cleaned 6 3 Cleaning the Wedge Windows Before the sensors are removed make sure that e no purging is active Awwarnine Steam purging Particularly when using steam for purging it is absolutely mandatory to turn it off since overheated steam is not visible Failure do do so may result in severe burn damages e No hazardous or hot gases can escape from the process e Appropriate protection against hot surfaces on and around the sensor is used LDS 6 Operating Instructions 01 2009 A5E00295894 05 71 Maintenance and Service 6 4 Calibration Verification 6 4 72 To clean the wedge windows proceed as follows 1 Release the lock ring closest to the process use an appropriate tool and pull the sensor out 2 Clean the window on the wedge tube If the optical lens needs cleaning the second lock ring needs to be released Extra care should be taken since the lens is anti reflection coated and sensitive to scratches 3 Clean the optical surface with a soft cloth or window cleaner containing ammonia Soap water also works fine in many cases Start at the centre and work with circular movements towards the rim 4 Remove all dust particles using pressurized air or flushing water 5 When the sensor is re installed make sure that the guide pin fits the hole on the purging flange Screw on the lock ring and tighten it gently with the t
85. ss the application in question General Information 1 3 Special Information and Warnings 1 3 1 4 1 5 1 6 Special Information and Warnings This manual provides you with information on using installing operating and maintaining the device Pay particular attention to all special information and warnings Information of this type is set apart from the rest of the text and is marked with the corresponding pictograms This information provides you with useful tips and helps to avoid faulty operation Warranty Conditions We expressly point out that the product quality is exclusively and conclusively described in the sales contract The content of this product documentation is neither a part of a previous or existing agreement promise or legal relationship nor is it intended to modify these All obligations on the part of Siemens AG are contained in the respective sales contract which also contains the complete and solely applicable liability provisions The provisions defined in the sales contract for the responsibility for defects are neither extended nor limited by the remarks in this document Delivery Information The respective scope of delivery is listed on the shipping documents enclosed with the delivery in accordance with the valid sales contract When opening the packaging please observe the corresponding information on the packaging material Check the delivery for completeness and undamaged condition
86. t Configuration gt Entering a Submenu Following the selection of a submenu you will be asked to enter a password for service mode exception submenu Analyzer status which requires no password and is thus freely accessible Analyzer status No code Calibration Access level 3 Measuring ranges Access level 1 Parameters Access level 1 Configuration Access level 2 The passwords for levels 1 and 2 are factory set to the values 111 and 222 respectively LDS 6 Operating Instructions 01 2009 A5E00295894 05 45 Operation 4 2 Input Sequence of Data Return to Measuring Screen When pressing the MEAS key you return immediately to the measuring screen from any position in the menu structure Any input started is aborted If NO changes will be used in current session until restart or reset To Meas Ch1 NH3 The adjacent question is displayed before the return is carried out The modifications are Save current modifica imported into the working area of the parameter memory by pressing Yes tions Yess By pressing No the modifications are nevertheless used in the working area of the parameter memory and are valid for the current session To reject the modifications a restart of the No instrument is required The ESC key leads back step by step to measuring screen Modifications are imported without questioning Coding of Analyzer After returning to measur
87. t smoke etc LDS 6 is connected to the measuring points by fiber optics The laser light is guided by a single mode fiber from the central unit to the transmitter unit of the in situ sensor The sensor consists of a transmitter and a receiver the distance between them defines the measurement path In the receiver box the light is focused onto a suitable detector The detector signal is then converted into an optical signal and transmitted via a second optical fiber to the central unit where the concentration of the gas component is determined from the detected absorption signal LDS 6 usually measures a single gas component by means of the absorption capacity of a single fully resolved molecular absorption line The absorption results from conversion of the radiation energy of the laser light into the internal energy of the molecule In the working range of the LDS 6 both rotation vibration transitions and electronic transitions such as with O2 can be triggered In some specific cases two components can be measured simultaneously if their absorption lines are so close to each other that they can be detected within the laser spectrum by one single scan for example water H20 and ammonia NH3 Operating Instructions 01 2009 A5E00295894 05 21 Technical Information 2 5 Measurement Principle 1 0 T I I T q 0 9 4 0 8 H20 15 Relative absorption 1 543 1 5435 1 544 1 5445 1 545 1 5455 1 546 Wavelength um
88. t Pressure Binary input should be de energized upon maintenance request signal from pressure transducer External Maintenance Request Purging Binary input should be de energized upon maintenance request signal from purging equipment External Maintenance Request General Binary input should be de energized upon fault maintenance request from unspecified equipment 73 Communication 73 Communication Ch1 NHs IP Address Type Static E Static_IP_Address 123 456 789 012 S 255 255 0 ic_Gatewa Sse 789 012 t 12 St 4 LD 15 a 5 a 2 S 1 oo Ot a o 0 tic Subnet Mask mm Port Number 1 You can use this function to set communication parameters This function should only be accessed by service personnel LDS 6 Operating Instructions 01 2009 A5E00295894 05 57 Operation 4 3 Analyzer Functions 74 Reset You can use this function to carry out a cold restart of the analyzer i e in case of a fault in program execution 74 Reset Ch1 Nhs You must wait for the start up time to elapse before trying to use the display The analyzer will automatically start to measure and will be ready for use after 1 to 3 minutes Trigger Reset O 75 Save Load Data 75 Save Load Data Chi NHs Save User Data o Load User Data o Load Factory Settings e Erase EEProm Section gt You can use this function to save
89. t display 5 Measured component display 6 Function keys with adaptive meaning soft keys Points 1 to 6 apply to channel 1 The elements are repeated in an analogous manner in the bottom half of the display for a two channel analyzer as shown Table 4 1 Table Op 1 Switches Keys Meaning CLEAR Deletes a commenced number input ENTER Every digit input except fast selection of a function must be confirmed by using this key ESC Return by one step in the input structure Modifications are imported INFO Help information MEAS Return from any position in the input structure to service mode possibly with request whether to import the entered data Pressing the MEAS key again results in locking of the analyzer i e changing to service mode again is only possible following input of the code Soft key Possible adaptive meanings Selection of item in menu tree Selection of function Switch function ON OFF Component selection LDS 6 Operating Instructions 01 2009 A5E00295894 05 Operation 4 1 General Editing Entries The values in the menus shown in this chapter should be understood as examples e An active input field is represented with brackets 10 as limiter The cursor is positioned as a flashing line underneath the number to be entered e g 23 45 e The input is terminated by pressing the ENTER key and the value is stored If several input fields are present in a menu
90. ted when the analyzer performs an action during which the measurement value may be incorrect The triggering of CTRL should normally not require an action from the user The following list shows some possible causes to why CTRL is activated Possible Causes e Start up procedure is active e Analyzer is de coded e Analyzer is communicating with external service software e Analyzer is shutting down e Analyzer is saving data to EEProm or Flash memory LDS 6 Operating Instructions 01 2009 A5E00295894 05 69 6 Maintenance and Service 6 1 General about Maintenance and Service During normal use the central unit LDS 6 requires no service The sensor with its optical surfaces will need regular maintenance Depending on application and purging method the interval of maintenance may vary from 1 to 12 months If the transmission in a channel drops below the level set by the user the transmission alarm will be activated The sensor in this channel needs to be serviced by cleaning the wedge windows or realigning the optical path For details on Maintenance and service of the sensor delivered with your system please refer to the corresponding sensor manual 6 2 Cleaning the Central Unit CAUTION Always make absolutely sure that no water gets into the unit during cleaning Failure to do so may result in a breakdown of the unit Use only a dry cloth without any cleaning agents Since the central unit contains optical surface
91. the human body Awwarnine The signal cables must only be connected to devices which guarantee safe isolation from their power supply If signals i e analog output 4 20 mA are to be routed into a potentially explosive atmosphere of zone 1 they must be intrinsically safe Supplementary retrofitting of the analyzer with energy limiting modules is necessary The Ex identification of these modules must be clearly visible on the housing e The signal cables in the rack mount analyzer are connected to the DSUB plugs at the rear e RC elements must be connected according to the figure Spark suppression below as a measure to suppress the generation of sparks across the relay contacts i e limit relays Note that the RC element results in a drop out delay for an inductive component i e solenoid valve The RC element should therefore be dimensioned according to the following rule of thumb R Q 0 2 x Ri Q C pF I A Additionally make sure that you only use a non polarized capacitor C Note When using direct current it is possible to fit a spark suppression diode instead of the RC element The cables to the relay outputs and binary inputs as well as the analog inputs and outputs must be screened They must be connected to the corresponding trapezoidal DSUB plug according to the diagram Pin assignments for I O connectors The conductor cross section should be 0 5 mm2 It is recommended to use
92. tively possible to carry out a static correction using a preset value At high temperatures there may be noticeable broadband IR radiation of gas and dust or flames may occasionally occur in the measurement path In this case the detector is protected by an optical bandpass filter to prevent saturation by the strong background radiation Operating Instructions 01 2009 A5E00295894 05 23 Technical Information 2 5 Measurement Principle Pressure The gas pressure can affect the line shape of the molecular absorption line LDS 6 uses a special algorithm to adapt the line shape Additionally an external pressure signal can be fed to the instrument to provide complete compensation for the pressure influence including the density effect Cross interferences Since LDS 6 derives its signal from a single fully resolved molecular absorption line cross interferences with other gases are quite unlikely LDS 6 is therefore able to measure the desired gas components very selectively In special cases the composition of the process gas might have an influence on the shape of the absorption line features This influence is compensated by analyzing the full shape of the detected signal curve applying specific algorithms Optical path length 24 The absorption values analyzed by the LDS 6 are typically small As a result of Beer Lambert s law the absorption of laser light depends on the optical path length within the gas Therefore the pre
93. ts Before the gas analyzer and its sensors can be used a pair of process flanges should be installed at the measurement site The flanges must be installed at a safe and accessible position to make installation and service easy to accomplish The flanges should be welded to the wall of the furnace or funnel as shown in the figure below The flange must protrude at least 100 mm 4 from the wall and 0 30 mm 0 1 2 into the furnace funnel Fla gt be A 1 he 4 Y aa Figure 3 6 Sensor CD 6 mounted on a process flange There are applications where furnace walls move due to variations in temperature If the furnace walls move the sensors will be miss aligned and the measurement interrupted To overcome this the sensor can be fixed to a girder or other structure that is not influenced by the temperature and the flexible metal tube is fitted between the process flange and the sensor flange Remember that the flanges fitted for the sensors must not deviate more than 2 Note It is very important that the flanges are mounted so that they are aligned Otherwise the measurements will not be correct Installation of Flanges When welding the flange tubes it is recommended to have the Flange Alignment Kit The Flange Alignment Kit from Siemens consists of a light source two flanges an aiming tool and a battery charger for the light source Make sure there is enough room for the sensor Especially take into cons
94. us to further relays Note Every change to the configuration of the relay outputs should always be stored in the user data memory using function 75 If this is not done there is a risk that a previous undesired configuration is called when selecting Load user data Table 4 8 Op 4 Relay Assignments Function Fault Remarks Signaling for faults specified in Operation chapter Maintenance Request Signaling for Maintenance Requests specified in Operation chapter Transmission Limit Alarm TR Upward or downward violation of transmission limit see also function 52 Function Control CTRL Signaling when analyzer is in start up mode or in service mode coded Limit Alarm Primary LIM Upward or downward violation of limit for the primary gas component see also function 51 Limit Alarm Secondary LIM Upward or downward violation of limit for the secondary gas component if applicable see also function 51 Stored Value STO Relay may be de energized simultaneously with fault transmission alarm or function control depending on the configuration of function 77 72 Binary Inputs 72 Binary Inputs Ch1 NHs B1 Ext Fault Temp O B2 Ext Fault Prs e B3 Ext Fault Purging o B4 Ext Maint Req Temp Continue You can freely configure the six floating binary inputs 0 0 V 0 4 5 V 1 24 V 13 33 V available in the
95. ut Levels x 81 Select Language x 80 Analyzer Test x 82 Pressure Correction x 83 Temperature Correction x 84 Water Correction x 85 Path Length x 86 Unit x 87 Dry Gas On Off x 88 Error On Off x 89 Ethernet On Off x 1 Analyzer specific functions 2 Channel specific functions 3 Component specific functions Some of the existing functions in other Siemens analyzers are not present in LDS 6 thus some function numbers may be missing in the preceding table 48 LDS 6 Operating Instructions 01 2009 A5E00295894 05 Operation 4 3 Analyzer Functions 4 3 2 Analyzer Status Table 4 3 This display appears when pressing the first soft key Analyzer Status following the Analyzer Status Ch1_NHs A selection of the diagnostics functions in the main menu 1 Anal Confi tion gt a Denese ae ey The status functions are freely accessible You will not be asked to enter a password 2 Diagnostics Values gt 3 Logbook gt 4 Display Meas Range gt 1 Analyzer Configuration You can use this function to display important manufacturing data of the analyzer 1 Analyzer Config Ch1 NHs Order No Seria O 60001 ade Package Ve oS Version CE Software 1 0 314 CE Drv Software 2 3 245 P Conti ZMBXXXXXXXXXXXXXXXXX rsion nue LDS 6 Ordering No Information on ordering data of analyzer Serial No Consecutive num
96. ynthetic material 15 14 N Wool N 13 O Antistatic material for example wood 12 N or concrete 11 NO 10 ik 9 N 8 N 7 N N 6 5 N PS 4 N 3 pa lt N N N 2 N 4 N HH gt 5 10 20 I 50 60 70 80 90 10 Relative humidity in Figure A 1 Electrostatic voltages on an operator Basic protective measures against electrostatic discharge e Ensure good equipotential bonding When handling electrostatic sensitive devices ensure that your body the workplace and packaging are grounded This prevents electrostatic charge e Avoid direct contact As a general rule only touch electrostatic sensitive devices when this is unavoidable e g during maintenance work Handle the modules without touching any chip pins or PCB traces In this way the discharged energy can not affect the sensitive devices Discharge your body before you start taking any measurements on a module Do so by touching grounded metallic parts Always use grounded measuring instruments LDS 6 94 Operating Instructions 01 2009 A5E00295894 05 List of Abbreviations List of Abbreviations Abbreviation symbol Explanation 4 Inch 1 2 25 4 mm lt Less than gt Greater than lt Less than or equal to gt Greater than or equal to x Degrees C Degrees Celsius 1 C 4 1 8 F F Degrees Fahrenheit 1 F 4 0 555 C AC Alternating Current

LDS 6 - Siemens

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