CID 3002-1109 1C Installation manual.book - MPIP
Contents
1. Siemens Laser Analytics mn O Siemens Laser Analytics AB Oct 2001 LDS 3000 Installation manual Compatible with software LDS3k ver 5 0 Document number CID 3002 1109 Rev 1C Content Introduction Preparations 2 1 Flanges 2 2 Central unit LDS 3000 2 3 Hybrid cables Installation 3 1 Sensors 3 2 Central unit LDS 3000 3 3 Modem Tuning 4 1 Settings 4 2 Adjustment of gain 4 3 Adjustment of delta phase 4 4 Adjustment of AGC card 4 5 Save settings 1 0 modules 5 1 Wiring 5 2 Connecting an I O module 5 3 The ADAM software 5 4 ADAM 4011 NUDAM 6011 input module 5 5 ADAM 4021 NUDAM 6071 output module 5 6 ADAM 4060 NUDAM 6060 relay module Maintenance 6 1 Cleaning of lenses Documentation Trouble shooting O 0 w60C amp 11 12 15 15 17 19 19 20 2 21 21 21 22 23 24 25 25 27 29 Content LDS 3000 installation manual Introduction This manual will describe the preparations and installation of an LDS 3000 and its sensors It will also specify the environmental conditions and space requirements All measurements in this manual are given in milli metres centimetres or meters Before LDS 3000 and sensors can be installed flanges have to be welded into the measuring site a mains connection has to be supplied for LDS 3000 etc This is described in the chapter Preparations Hybrid cables are preferably installed before the LDS 3000 but not neces sarily H2. MANUAL A manually entered water concentration is used for compen sation OUTPUT The measured water value is sent as a 4 20 mA signal to an other LDS 3000 There has to be an additional I O module for this signal INACTIVE No water compensation is used Settings for gas compensation When using an input signal to compensate for a second gas for instance compensating HCl measurements for the presence of water there are two different menus to consider to get the settings complete Limits can be set for the compensating second gas for what concentrations that are allowed and what value should be used if these limits are exceeded To set ranges and limits for the channels go to I O Modules window Main Window Alarm Table Under Ranges C Lo the concentration corresponding to 4mA C Hi the concentration corresponding to 20 mA Under Limits set CL Lo to the lowest acceptable concentration and CL Hi to the highest acceptable To set the concentration value to revert to if the limits are exceeded go to General Settings under the service menu 1 Change Comp Mode to manual and save settnings 2 Re start the LDS program 3 Change Comp Mode back to external and save settings 4 Re start the LDS program When Comp Mode is set to Output the only thing to adjust is the range of the signal so it corresponds to what the other LDS 3000 is expecting as an input Ranges are set in the I O Modules window Main Window Alar
3. L4 Transmission alarm Gas 2 Thus the 2 pole relay is not necessary when two gases are measured Maintenance The only maintenance done to LDS 3000 and its sensors is usually clean ing of lenses and occasional re alignment of sensors Cleaning of lenses Before removing sensors always make sure that If there is steam puring make sure the steam is turned of just before re moving the sensor No hazardous or hot gases can escape from the process Gloves are worn if sensors are hot Remove the quick coupling no tools are needed and the pull the sensor box out The lenses have an anti reflective coating that is sensitive to mechanical ware and is easily scratched Remove all particles that could scratch the surface with pressurised air or by flushing with water If the lens is hot allow it to cool down before flushing with water Clean the lens with a soft cloth or tissue and ethanol or window cleaner containing ammonia Start at the centre of the lens and work circular movements towards the rim When re installing the sensor make sure the guide pin fits the slot on the lens tube Replace the quick coupling and tighten it by hand This operation should not affect the alignment but if in doubt do the last step of the alignment where the light is placed in the transmitter sensor and the receiver sensor is aligned See 3 1 25 Maintenance LDS 3000 installation manual Documentation The installation must be documented
4. Use at least M6 screws or equivalent to fix the LDS 3000 to rack The LDS 3000 requires 115 230 V 50 60 Hz earthed mains socket that is fused to 10 A Depending on the safety level required equip the mains with UPS and or excess voltage protection 440 mm lt a gt 370 mm N F Physical dimensions of the central unit for LDS 3000 The mounting conforms 400 mm to the 19 inch rack mounting system Y 483 mm Hybrid cables Always protect the single mode fibre E2000 connector from dust Ca bles are supplied with a protective tube at each end and inside these a plastic protective cap for the single mode fibre DO NOT remove the protective tube until the cable is installed and ready to be con CD nected to LDS 3000 and sensors DO NOT remove the plastic protective cap until the cable is routed inside the LDS 3000 sensor All cables are marked with identification tags HXXA or HXXB where H means Hybrid cable which can be used for all types of systems except oxygen XX is the serial no for the cable and A B depends on the direction the cable is oriented Before cables are shipped from Siemens Laser Analytics they are tested in both directions A to Band B to A it does not matter which way the cable is installed Hy brid cables are installed between LDS 3000 and transmitter sensor OXX are for oxygen systems only and is installed between LDS 3000 and transmitter sensors LXX are loop cables and ar
5. are connected in series starting with the 4520 6520 IMPORTANT do not forget to move the resistor at the end of the commu nication bus if a module is added Connecting an I O module When an I O module is added or replaced a new adress has to be pro grammed into the new module There are addresses dedicated for all I O modules depending on function and channel These adress in HEX can be viewed in the LDS program in the menu I O Addresses from Main Menu to Alarm table they are also attached as an appendix to this manual both in DEC and HEX IMPORTANT In the Adam program the address is entered as a deci mal value How to program the address and other settings is described in the chap ter The ADAM software The ADAM software The ADAM program is installed on all LDS 3000 The ADAM program is used to set the adress calibrate and set outranges of the I O module The 21 22 program is started from the DOS promt To reach the DOS promt choose More options in the start up window Type ADAM and press enter C gt adam The ADAM program will start by scanning through all addresses to de tect connected I O modules Usually the scan can be stopped at 115 since there are no dedicated addresses above this If a module is missing dis connect all other modules and scan again over the whole range to be sure a faulty adress hasn t been entered If two modules have the same adress none of them will be fou
6. done to the LDS 3000 Settings menu In the settings menu the following parameters have to be checked ad justed Path length The measurement path length in meters is the distance between the flanges minus the length of the purging buffers It is prefer able if the correct inner length is supplied from the start since this dis tance can be difficult to obtain later A discussion about the effective path length can be found in the Flange Installation Manual Gas temp Enter the temperature in degrees Celsius of the gas to be measured This value is used to compensate the measurement value If it is not possible to set a temperature the automatic temperature com pensation is set to ON and the LDS 3000 is expecting a 4 20 mA temper ature input signal See the chapter I O modules on how to set the ranges Pressure Is only active from software ver 5 2 Enter the pressure in mbar in the process The compensation can also be automatic the same way as the temperature but this is rarely used Response time The time during which samples are collected to form the average value displayed on the screen Unit Select the desired unit Options are ppm vol mgNm EU mgNm US Scaling Upper and lower set the limits of the 4 20 mA output and the bar presentation of the concentration Alarms Transmission alarm is triggered if the transmission drops below the set value Concentration alarm is triggered if the concentration value rais
7. not be necessary to change Delta phase set more than 200 units from the factory settings The Delta phase set should if possible not exceed 100 2000 If there are variations in the transmission due to dust or a high concen tration of the measured gas it could be impossible to get the Delta phase below 200 If it is not possible to adjust the Delta phase it is usually due to one of the following The signal is saturated see adjustment of gain above There is no measurement signal the only signal coming through is noise The absorption line is very unstable This could of course be due to a lot of things but mostly it is due to misalignment Adjustment of AGC card The AGC card automatic gain control is used when there is a large and 19 20 variating dust load When tuning the AGC card the transmission conditions must be stable which usually means the plant has to be shut down JP2 JP 1 Connectto Connect to sensor card detector increased gain VA Potentiometer NRE To tune the AGC card it must first be disconnected Connect the detec tor directly to the sensor card and tune this as described above With an oscilloscope connected to the sensor board note the p p reading If no os cilloscope is available note the transmission RMS Connect the AGC card and if necessary adjust the p p value RMS back to the noted value with potentiometer R5 Save settings When all settings and adjustm
8. the only way to learn The range of the Transmission RMS is 0 4095 If the transmission RMS reads 4095 it is saturated and the measurements will be inaccurate and unsta ble Start by adjusting the potentiometer on the detector If this isn t enough continue with the potentiometer on the sensor card While adjusting the gain always check the signal with an oscilloscope a 5 8 kHz sinewave Connect the oscilloscope to pin 2 and 4 at the test point on sensor cards ver 3 xx and older or on a sensor card ver 4 0 on pin 2 and 5 The sinus signal should be undistorted and at a level of around 5 V If there is any distortion decrease the gain with the potentiometer on the sensor card until the signal is undistorted If gain needs to be increased further do this with the third potentiometer on the fibre receiver If the gain is adjusted on the fibre receiver again the signal has to be checked with an oscilloscope but this time on the test points on the receiver board If it isn t possible to get the RMS value above 1000 and there isn t a very heavy dust load the sensors are probably not aligned properly Adjustment of delta phase Adjustment of the delta phase is done in the service menu Each channel has to be adjusted separately There is a time delay on the Delta phase reading so change the Delta phase set slowly Adjust the DeltaPh Set so that the DeltaPh value is as low as possible preferably a negative value It should
9. this will greatly increase the abil ity of Siemens Laser Analytics to give support in the future Complete the form and return it as soon as possible At Siemens Laser Analytics there is a complete file for each instrument so all parts and calibrations can be traced If all changes in Settings Menu and Service Menu are docu mented Siemens Laser Analytics can rebuild an identical instrument Siemens Laser Analytics will most of the time be able to log the system on reguest as long as there is a modem connected The log file is then saved for future comparison trouble shooting On each and every new installation an Installation report and a Service order has to be written These documents are supplied by Siemens Laser Analytics Copies of the written reports must be sent back to enable fu ture support 2 Documentation LDS 3000 installation manual Trouble shooting Most faults are caused by mis alignment of the sensors dirty lenses or the light path being blocked by dust or other Fault The transmission drops slowly 2h days Cause 1 The lenses are getting dirty Actions Clean the lenses and verify that the purging works Try to im prove the purging so the problem doesn t re occur If there is condensa tion on the lenses ex water or ammonia fitting of a heater for the purge air should be considered Cause 2 There is a build up of dust in or in front of the purging tube Actions Remove the dust pile Try to impro
10. 0 when calculating the gas concentration There are applications where furnace walls move due to variations in temperature If the furnace walls moves the sensors will be miss aligned and the measurement interrupted To solve this the sensor can be fixed to a girder or other structure that is not influenced by the temperature and the a flexible metal tube is fitted between the process flange and the sensor flange Again the flanges fitted for the sensors must not deviate more than 1 approx 30 Min 150 gt p lt Maximum p Flange DN65 PN6 i E BR EE TT Sa Si Measurement A To be measured after installation Central unit LDS 3000 The LDS 3000 must be installed in a dust free environment with a tem perature between 10 C and 30 C and a relative humidity of max 85 non condensing If these conditions can t be fulfilled the LDS 3000 must be installed inside a cabinet with controlled environment We strongly recommend a standard 19 inch rack mounting enclosure from the RIT TAL range or equivalent Make sure there is at least 500 mm of free space behind the LDS 3000 to accommodate the signal and hybrid cables and to allow opening of the door The back side of the analyser must be accessible TheLDS 3000 dissipates approx 100 W of heat loss during normal in use conditions so make sure there is free air flow around the LDS 3000
11. e sure to always post the appropriate warning signs Heaters for compressed air are supplied by Siemens Laser Analytics as an option These require 115 230 V 50 60 Hz 10 19 A See separate manuals for the different purging types Purging of sensor boxes and lens tubes In oxygen applications it might bee necessary to purge boxes and lens tubes with an oxygen free gas such as nitrogen See application manuals for further information Central unit LDS 3000 Hybrid cables Always protect the single mode fibre E2000 connector from dust Do not remove the plastic vial until the cable is firmly fastened in the LDS 3000 1 Lead the hybrid cables through the intake holes on the back of LDS 3000 Channel 1 should be furthest to the left and then 2 and 3 moving right Fasten the cables with Roxtech gaskets Always use roxtech lubricant on the gaskets before installing otherwise they will be practically impossible to remove later Connect the multi mod fibre orange to the SMA connector on the fibre receiver The fibre receiver is the little silvery box just under the cable in take Fibre receiver for channel 1 is furthest to the left then channel 2 and 3 moving to the right Inspect and clean the single mode fiber by Siemens Laser Analytics trained personnel only before connecting to the E2000 connector on the opto module The opto module is clearly visible It doesn t matter which cable goes in which connector Connect the 24 V cable t
12. e the same for all systems Loop cables are in stalled between transmitter sensor and receiver sensor Cables should be installed so that they are protected from mechanical ware such as sharp edges or moving parts Operating temperature for the cables are 20 to 70 C this refers to both ambient temperature and any parts the cable comes in contact with The bending radius of the cable may never be smaller than 100 mm If clamps are used there must be a minimum of 0 5 mm clearance between cable and clamp or use rubber coated clamps Take extra care of hybrid cables for HCl systems since the cables are extra sensitive to the wave length used in these systems Again do not remove the protective end caps when the cables are in stalled If the cables must be installed in tubes they have to be big enough to allow cabling without removing the end protection LDS 3000 installation manual Preparations Min 0 5mm Hi Min R 100mm LDS 3000 Installation manual Installation LDS 3000 Air or steam purging T Quick release intake 5 coupling a 9 Transmitter Receiver n Sensor sensor Loop cable Overview of an installation Sensors Do not install the sensors unless the purging air steam is accessible Never leave a sensor without purging since the lenses are easily dam aged Mount the sensors receiver and transmitter with gaskets
13. ents have been done press the Set Nom inals Measurement channels in the service menus parameter settings and follow with Save Settings This will set the normal values for the measurement channels and any changes can be detected amongst oth er the RMS value in the main window is set to 100 1 0 modules The standard configuration in a 1 channel LDS 3000 is one RS232 RS485 converter ADAM 4520 NUDAM 6520 one analogue output 4 20 mA for the gas concentration ADAM4021 NUDAM6021 and one relay unit that inhibits the measurement value at an instrument alarm and supplies a transmission alarm ADAM4060 NUDAM6060 The ADAM and NUDAM modules are fully compatible in the LDS 3000 application an ADAM module can be replaced by a NUDAM or vice ver sa In the following text the ADAM module number will be used On instruments with more than 1 channel one 4021 and one 4060 will be added for each channel As options the following modules can be added 4021 for analogue output 4 20 mA of secondary gas temp or transmis sion 4011 for analogue input 4 20 mA of water temp pressure compensa tion Wiring General for modules is 1 That power is connected from the power supply to pins 9 and 10 with each row is connected in series having a separate connection to the power supply 2 That the communication bus RS485 is connected to pins 7 and 8 and that is terminated in both ends by a 1200hm resistor All modules
14. es above the set value When all settings are done press Save Settings to store these on the flash disk 15 16 Service menu Delta Phase Set See under 4 3 for a more detailed explanation Adjust ment should be done after the gain is adjusted Mean Filter Averaging time for the absorption curves Since an ab sorption curve is sampled 24 times each second and if mean filter is set to 1 the displayed curve will be an average of 24 samples IMPORTANT the response time should be the same for measurement channels and reference channel General settings Alarm Response This determines what measurement value should be displayed when an alarm is activated indicates that regardless if there is an alarm or not only positive values will be displayed indicates that measurement values will be displayed even if it is negative Zeroed Displays 0 concentration Zeroed Displays 0 concentration Automatic Temp Comp ON a 4 20 mA temperature input signal is used for automatic compensation or in the case of a O2 Temp instrument the internally calculated temperature is used for compensation OFF a temperature value has to be manually entered Comp Mode Is today only used for water compensation following op tions are available EXTERNAL a 4 20 mA gas input signal is used for automatic compen sation There has to be an I O module for the input signal INTERNAL The internally calculated water value is used for compen sation
15. eter connected to pin 1 and 2 In the Out put Data under Setup change OutData to 000HEX the multimeter should now read 4 0 mA 0 1 mA Change the OutData to 800HEX the multimeter should now read 12 0 mA 0 1 mA Change the OutData to FFFHEX the multimeter should now read 20 0 mA 0 1 mA If the output signal is not according to the above calibrate the module After testing set relay 4 back to OFF DO NOT change any settings except for Adress and Input range Typical settings are Address 17 Gas conc for ch 1 Output range 4 20 mA options 0 20 mA or 0 10 V Data format Twos complement Slew range immediate change Baud rate 9600 Checksum Disable 23 24 ADAM 4060 NUDAM 6060 relay module The relay module has 4 separate relays Alarm L1 instrument alarm Relay 4 Alarm L2 low transmission Relay 3 Alarm L3 Gas 1 high concentrationRelay 2 Alarm L4 Gas 2 high concentrationRelay 1 Measurement signals are broken by relay 4 if there is a L1 alarm If a sec ondary gas or temperature is measured a 2 pole relay is added The 2 pole relay is activated by the 4060 s relay 4 and breaks both primary and secondary gas signals DO NOT change any settings except for Adress Typical settings are Address 33 Alarm for ch 1 Baudrate 9600 Checksum Disable From software ver 5 1 this has changed according to the following list L1 Instrument alarm Gas1 L2 Transmission alarm Gas 1 13 Instrument alarm Gas 2
16. he four hexagon socket screws Alignment is done by tightening and loosening screws cross wise until the light dot is centred on the cross hair Transmitter Sensor Always protect the single mode fibre E2000 connector from dust Do not remove the plastic vial until the cable is firmly fastened in the sensor Install the cables hybrid and loop cable at the transmitter sensor Cables are fixed in the sensor with roxtech gaskets Always use roxtech lubri cant on the gaskets before installing otherwise these will be practically impossible to remove later Multimode fibre SMA connector and 24 V are just connected straight through to the receiver Inspect and if necessarily clean the single mode fiber before connecting to the launcher E2000 connector This can be done by Siemens Laser Analytics trained personnel only The single mod fibre connector E2000 is very sensitive to dust so keep the protective cap on at all times when it is not connected to the launcher TRANSMITTER SENSOR ver 3 and earlier 1 24 V Ground 2 3 24 V Hybrid cable 4 Ea Loop cable 6 i E2000 Single mod fibre L h yellow blue auncher Multi mod fibre orange ni 10 Receiver sensor Install the loop cable in receiver sensor Cables are fixed with a roxtech gasket Always use roxtech lubricant on the gaskets before installing otherwise they
17. heck the multi mod fibre by shining a flashlight in one and checking that the light is vis ible in the other end The single mode fibre can be checked by moving the detector and sensor card to the transmitter sensor Place the launcher centred over the detector If there is no transmission the single mode ca 29 30 ble or its connector is broken This of course contradicts some of the things above because what if the sensor card is broken The only sure way to tell if the single mode fibre is OK is with an optical effect meter or OTDR
18. le probe works as an an tenna as well In order to measure a MA input the module must be fitted with a 124 ohm resistor between pin 1 and 2 Before the module is taken into use it must be calibrated first see the chapter The ADAM software The output module 4021 could be used to generate the 20 mA signal Connect the out signal from the 4021 via a multimeter to the 4011 In Output Data under Setup adjust the output from the 4021 to 20 MA and then calibrate the 4011 This is also a con venient way of checking the module DO NOT change any settings except for Adress and Input range Typical settings are Address 49 for temp on ch 1 Input range 20 mA or 15 mV to 2 5 V Data format Engineering unit Baud rate 9600 Checksum Disable Alarm Settings Disable High Alarm value 65 535 mA since alarm is disabled it doesn t matter Low alarm value 65 535 mA since alarm is disabled it doesn t matter Clear latch alarm NO Clear event counter NO ADAM 4021 NUDAM 6021 output module The input module can handle output signals like mV V and mA but in standard configuration only mA is used The output signal is normally connected via relay 4 on the ADAM 4060 module As a result the output signal will always be 0 mA if there is a fault in the LDS 3000 Before testing the module relay 4 must be set to ON in Output Data under Setup see the chapter The ADAM software Test the module with a multim
19. m Table Under Ranges C Lo the concentration corresponding to 4 mA C Hi the concentration corresponding to 20 mA Adjustment of gain Gain is displayed on the LDS 3000 service menu as Transmission RMS On systems with sensor cards older than ver 3 xx there are three poten tiometers for adjustment of the gain on each channel From sensor cards ver 4 0 and later the potentiometer on the sensor card is discarded The first potentiometer is on the detector inside the receiver sensor MIN max gt The potentiometer can be hard to see inside its hole and its is necessary to have a very small screwdriver to adjust it The second potentiometer is on the sensor card 17 Max Min lt gt Sensor card ver 3 xx Pot Test point 15 VDC input V GND Signal GND Signal Sensor card ver 4 0 Sor ale 0 TOS The third potentiometer is on the fibre receiver inside the LDS 3000 just under the cable intake holes 16 Before start of adjustment set all potentiometers to a minimum The aim of the adjustment is to get the Transm RMS reading on the LDS 3000 to 3000 in a dust and gas free environment or 1500 2000 when there is gas or dust present This does not apply to systems measuring O To guess the right value when the process is running can be quite tricky since we don t want the signal to be saturated when the process is turned off Trial and error is unfortunately
20. nd and other random faults will occur When the scan is done a list of the modules found will be presented At the top there is a menu and at the bottom is an explanatory text for each menu item COMport Sets the communication port and baud rate This should nev er be changed Search Scans through all addresses to find I O modules The search can be stopped at any time by pressing any key Setup In the SetUp there are two options Module settings and Out put data In Module Settings it is possible to change address range for mat etc Move the cursor with the arrow keys to Search press enter Move with arrow keys to the module you wish to change and press enter On some displays it might be difficult to see which module is high lighted so count the number of times the arrow down key is pressed In Output Data it is possible to manipulate the output data for instance switch relays on off or get a current of somewhere between 4 and 20 mA Run Displays the in or out data for a selected module Calibrate Calibrates the selected module Follow instructions given on the screen Terminal ASCII command and response never used File Log module info to disk or file never used Ouit Exits the Adam program ADAM 4011 NUDAM 6011 input module The input module can handle input signals like mV V and mA but in standard configurations only mA is used The thermocouple is never used due to EMC regulations the thermocoup
21. o the filter board right above the cable intake holes Keep the 24 V cable as short as possible inside the cabinet preferably not longer than CD 14 cm Output signals On the back of the LDS 3000 there are three green 10 pole connectors one for each channel Pole 1 to 8 are output signals 4 20 mA or relay and 9 to 10 are input signals 4 20 mA when compensating for temperature or other gases The relay for transmission alarm is normally closed For further information about I O modules se operators manual IMPORTANT The gas signals on pole 1 2 and 5 6 are O mA if there is an instrument alarm the LDS program isn t started or the instrument is switched off 1 12 3 14 5 6 7 8 9 10 Gas concentration 4 20 mA Temp or gas input 4 20 mA 12 Transmission alarm relay Sec Gas concentration Temp out 4 20 mA Transmission 4 20 mA The picture above shows the standard configuration but some instru ments may differ Modem The LDS 3000 has the facility to run remote maintenance With the LDSComm program installed on a PC it its possible to connect to the LDS 3000 via modem or null modem cable The LDSComm program can log measurement values and change settings on the LDS 3000 Modem normal phone or GSM or null modem is connected to the 9 pin D connector male on the back of LDS 3000 LDS 3000 can use most types of m
22. odems provided they are HAYES com patible and can run 9600 bps Modems have to be purchased locally Siemens Laser Analytics can not supply modems for use outside Sweden Make sure the modem is sup plied with a cable that has a 9 pin connector female that fits the LDS 3000 The modem on LDS 3000 can never initiate communication it only an swers incoming calls Setting the different types communication is done in the field Comm Type in the COMMUNICATION window GSM Nat is for use in Sweden only Internal is not active Local is for null modem cable External is for external modems and GSM Int is for GSM modems outside Sweden Do save settings and restart LDS 3000 after changing comm type to acti vate the setting 13 Installation LDS 3000 installation manual Tuning Most parameters are set at delivery but some adjustments have to be done on site In the settings menu measurement path length tempera ture and pressure have to be checked In the service menu Transmission RMS and delta phase have to be checked and maybe adjusted slightly Settings There are several parameters that can be set in a number of different menus the ones described below are the most commonly used during in stallation and normal maintenance For other settings please refer to the technical manual or contact Siemens Laser Analytics for advise Be aware if faulty settings are done in for instance the laser menu perma nent damage can be
23. on the flanges and cross tighten the bolts Align the sensors in the following steps 1 Roughly align the adjustable flange so that the two discs are parallel 2 Loosen the quick coupling and remove the receiver sensor 3 Fasten the alignment plate with the quick coupling The alignment plate is included in the alignment kit part no 3020 2029 1A Turn the flashlight on and mount it on the alignment plate In dusty environments or long path lengths use a stronger light source such as a 55 W 12 V lamp or a visible laser these are options supplied by Siemens Laser Analytics 4 Remove the optical fiber launcher on the transmitter end and mount the cross hair 5 Align the transmitter with the four hexagon socket screws Alignment is done by tightening and loosening screws cross wise until the light dot is centred in the inner ring of the cross hair Start with loosening all four screws The light dot should have a perfect round shape If the light dot is oval or scattered it might be necessary to adjust the welded flanges or remove any objects that might be blocking the light path Make sure that all screws are tightened when the sensor is aligned Tighten the screws crosswise 6 Move the flashlight laser to the transmitter and replace the cross hair 7 Remove the alignment plate and remount the receiver sensor Tighten the guick coupling firmly Remove the detector and replace it with the cross hair 8 Align the transmitter with t
24. ow they are installed is described in the chapter Hybrid cables The installation of LDS 3000 installation and alignment of sensors are de scribed in the chapter Installation Each measurement channel has to be tuned to the conditions on site this is described in the chapter Tuning How to add or replace I O modules is described in the chapter I O Mod ules In the chapter Documentation there is a list of what parameters to doc ument and what information to send to Siemens Laser Analytics As an appendix there is an Installation report included Dell gemen sam Produktion Service Finally there is a brief trouble shooting guide Introduction LDS 3000 installation manual Inside diameter MIN 55 External diameter MAX 75 Preparations Flanges Flange tubes have to be welded into the wall off the furnace or funnel as shown in the picture below Flanges must be DN65 PN6 with an inner di ameter of minimum 55 mm and maximum 70 mm The flange must protrude at least 100 mm from the wall and 0 30 mm into the furnace funnel Flange tubes should never be longer than the purge tube The standard purge tube from Siemens Laser Analytics is 360 mm longer or shorter tubes can be supplied as an option If the purge tube is shorter than the flange tube there could be a build up of dust in front of the purge tube that eventually blocks the light beam Flanges are not supplied by Siemens Laser Analytic
25. s Installation of flanges When welding flange tubes it is necessary to have some sort of alignment tool The alignment tool from Siemens Laser Analytics consists of a light source and an aiming device Make sure there is enough room for the sensor Especially take into con sideration that it should be easy to mount dismount and that the sensors lid should be able to open fully Safe working space around the sensors are also needed guardrails ladders etc purging tube flange tube Approx 397 Process wall Insultion Varying thickness x MIN 150 Flange DN 65 PN 6 Weld the flange tubes loosely on each side of the wall Do not weld them harder than that angle of the tubes can be adjusted with a hammer Mount the light source on one flange and the alignment unit on the other flange Focus the alignment unit until a clear light spot is obtained Ad just the angle of the flange tube until the light spot is centred on the cross hair Weld the tube with alignment unit permanently into this po sition Shift light source and alignment unit and repeat the procedure above un til the other tube also is permanently welded When both flange tubes are permanently fixed the deviation from the theoretical optical path must not exceed 1 When the flange tubes are permanently installed measure the distance between the inside of the flanges with an accuracy of at least 10 mm This distance will later be used by LDS 300
26. ve the purging or install longer purge tubes Cause 3 The sensors have moved due to changes in temperature or load Actions Re align the sensor see the sensor manual Fault The transmission drops suddenly Cause1 There is no 24 V supply to the sensor card Actions Check cables for mechanical damages Check that there is 24 V out from the filter board in the LDS 3000 Check that the AC DC on the door of the LDS 3000 supplies 24 V out The AC DC is short proof so if it s not operating disconnect all cables on the output If the AC DC works af ter this locate the short circuit and fix it For sensor cards older than Ver 4 0 Cause 2 The DC DC board in the receiver sensor is broken Actions Check that there is 15 V out from the DC DC board if not re place it Cause 3 The detector or sensor card is broken Actions Test that there is 15 V on the sensor cards test point if not re place sensor card and detector It can be a bit troublesome to determine if the sensor card is faulty or there is no light coming through but by con necting a voltmeter AC mode or an oscilloscope to the test points pin 2 and 4 it is possible to see if there is a signal The signal should be in the range 1 6 V If not replace sensor card and detector but first confirm that you actually have a signal through the single mode fibre and measure ment path Cause 4 The fibre optic cable is broken Actions Check the cables for mechanical damages C
27. will be practically impossible to remove later Attach the two pole Phoenix connector to the 24 V cable From sensor boards ver 4 0 the DC DC board is incorporated on the sen sor board and polarity doesn t matter Connect the orange multi mod fibre to the sensor board 24 V 1 Ground Loop cable Multi mod fibre MA orange Purging of lenses Lenses can be purged with compressed instrument air heated com pressed air blower fan steam or some applications with nitrogen or CO For more detailed information see the technical specification Always install the purging before the sensors are installed to avoid dam ages on the lenses during the rest of the installation process For fan purging the sensors must be equipped with a Fan purging adap tor article no 3040 2295 this is an option supplied by Siemens Laser Analytics Minimum airflow at 20 mbar counter pressure should be 850 litre min Compressed instrument air should have a pressure of 2 6 bars and be oil free The sensor is supplied with a connector for semi rigid tube with in ner diameter of 4 mm and an outer diameter of 6 mm Steam must be at least 4 bars and overheated with a maximum temper ature of 200 C There is a ISO 1 8 conical thread for connecting the steam The connector for compressed air supplied with the sensors to gether with a 6 mm steel tube will work when purging with steam When using steam mak
Download Pdf Manuals
Related Search