Continuous gas analysis In situ Laser Gas Analyzers SITRANS SL Introduction 1 Description 2 Application planning 3 Installing 4 Explosion protection 5 Commissioning 6 Operation 7 Interfaces to automation systems 8 Service and maintenance 9 Alarm, error, and system messages 10 Technical data 11 Dimension drawings 12 Spare parts and accessories 13 Operating Instructions 12/2010 A5E01132948-04 Appendix A List of abbreviations B
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.
Table of contents 1 2 3 Introduction................................................................................................................................................ 9 1.1 Purpose of this documentation ......................................................................................................9 1.2 History ............................................................................................................................................9 1.3 Product versions ........
Table of contents 4 5 6 Installing .................................................................................................................................................. 39 4.1 Safety information ....................................................................................................................... 39 4.2 4.2.1 4.2.2 4.2.3 4.2.4 4.2.5 Mounting....................................................................................................................................
Table of contents 6 7 8 Commissioning ........................................................................................................................................ 87 6.1 General information for commissioning .......................................................................................87 6.2 6.2.1 6.2.2 Starting SITRANS SL for the first time.........................................................................................88 Defining the path length ........................
Table of contents 9 10 11 Service and maintenance ...................................................................................................................... 149 9.1 9.1.1 9.1.1.1 9.1.1.2 9.1.2 9.1.2.1 9.1.3 Instrument verification ............................................................................................................... 149 Verification with the verification tube.........................................................................................
1 Introduction 1.1 Purpose of this documentation 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. 1.
Introduction 1.3 Product versions 1.3 Product versions The product version number is found under the article number on the nameplate (see following figure).
Introduction 1.4 General information 1.4 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 operation.
Introduction 1.6 Warranty conditions 1.6 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.
2 Description 2.1 Overview SITRANS SL is a diode laser gas analyzer with a measuring principle based on the specific light absorption of different gas components. SITRANS SL is suitable for fast, non-contact measurement of gas concentrations in process or flue gases. An analyzer consisting of transmitter and receiver unit (sensors) is used for each measuring point.
Description 2.2 Benefit 2.2 Benefit The in-situ SITRANS SL gas analyzer features high operational availability, unique analytical selectivity, and a wide range of possible applications. SITRANS SL permits measurement of a gas component directly in the process: ● With high dust load ● In hot, humid, corrosive, explosive, or toxic gases ● In applications showing strong varying gas compositions ● Under harsh environmental conditions at the measuring point ● Highly selective, i.e.
Description 2.3 Range of application 2.
Description 2.4 Design 2.4 Design The SITRANS SL gas analyzer consists of a pair of cross-duct sensors - a transmitter unit and a receiver unit - both with the same dimensions. The complete analyzer is integrated in these two enclosures (pos. 1 and 7, fig. 2.2). The transmitter unit contains the laser source which light is transmitted to the receiver through the measurement path. The receiver unit contains a photodetector including electronics as well as a reference cell.
Description 2.4 Design Non Ex version and sensor connection cable kit ① Transmitter housing ⑨ ② Transmitter tube unit ⑩, ⑪ Process interface Customer flange (not included) ⑬ ⑭ Purging tube (accessory) Sensor connection cable kit (accessory), consisting of ③ ④ ⑤ ⑥ ⑦ ⑧ Receiver tube unit Receiver housing Connection cable (accessory) Figure 2-2 ⑫ ⑮ ⑯ ⑰ Large cable gland (for cables with a diameter of 13 ...
Description 2.
Description 2.4 Design 2.4.2 Display and control panel Special features of the receiver unit: ● Display for simultaneous output of result and device status. ● LED backlighting of display. ● Menu-driven operation for parameterization and diagnostics. ● Remote operation via infrared interface for safe use in hazardous zones. ● Remote control using membrane keypad and softkeys which are easy to clean.
Description 2.4 Design 2.4.3 Cables for connection ● The SITRANS SL is normally delivered without cabling, except for the ATEX version. ● For non-Ex versions the accessory "sensor connection cable kit" is used to connect the transmitter and receiver unit of the analyzer, while the connection cable is needed to connect the SITRANS SL electrically to your process control system. All materials used are flame-retardant.
Description 2.4 Design 2.4.
Description 2.5 Functional description 2.5 Functional description 2.5.1 Operating principle SITRANS SL is a gas analyzer employing single line molecular absorption spectroscopy. A diode laser emits a beam of 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 (see following figure).
Description 2.5 Functional description Configuration The main feature of the in-situ analytical procedure is that the physical measurement takes place directly in the stream of process gas and 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 SITRANS SL and therefore must be considered for each new application.
Description 2.5 Functional description 2.5.2 Influences on the measurement Dust load As long as the laser beam is able to generate a suitable detector signal, the dust load in the process gas does not influence the analytical result. By applying a dynamic background correction, measurements can be carried out without any negative impact. The influence of a high dust load is extremely complex, and depends on the optical path length and particle size.
Description 2.5 Functional description Optical path length As a result of Beer-Lambert's law, the absorption of laser light depends on the optical path length within the gas. Therefore the precision of the optical path length measurement has an effect on the precision of the total measurement.
Description 2.5 Functional description Purging The easiest way to avoid condensation and dust deposits on the sensor windows is to purge them, e.g. with air. Purging must be selected depending on the application. The transmittedlight sensors can therefore be configured for the respective situation. The purging gas must not contain any concentrations of the measurement component. The presence of the gas in the sensor heads or the purging tubes may influence the measured concentration.
Description 2.5 Functional description Purging on process side For purging on the process side, the flow of purging gas can be adjusted between 0 and approx. 50 l/min at each sensor head using a needle valve (included in delivery). Purging tubes The purging media used on the process side flows through the purging tubes into the process gas stream. The tubes extend into the process area by a few centimeters, usually perpendicular to the process gas stream.
Description 2.5 Functional description 2.5.3 Maintenance and fault messages The SITRANS SL carries out continuous self-monitoring, and outputs alarms and warnings to indicate maintenance requirements or a system fault. The information is output as plain text on the LUI display, where symbols identify the category and the severity of the fault.
Description 2.5 Functional description 2.5.4 Essential characteristics ● Long-term stability through use of an internal reference cell; calibration interval at least one year. ● Dynamic background correction for varying dust loads. ● Isolated analog signal outputs of 4 to 20 mA. ● Menu-driven operation. ● Selectable time constants (integration time). ● Password-protected user interface. ● I/O operation in accordance with NAMUR recommendations. ● Monitoring of overall optical transmission.
Description 2.6 Product characteristics 2.6 Product characteristics Device-specific characteristics SITRANS SL is designed for measurement of various gases. Details can be obtained from chapter Technical Data, standard applications section Transmission The system will have full performance when the transmission is within the range of 1 to 100 %. Dust load The characteristics of the dynamic changes of optical visibility due to dust including turbulences is defined by the measurement situation.
3 Application planning 3.1 Cable selection recommendations Cable selection recommendations Note For a normal (non Ex) setup of SITRANS SL the cables are not part of the standard delivery and should be ordered as an accessory. An Ethernet cable may be permanently connected via the receiver junction box. Ethernet is needed for service and maintenance work. A permanently connected cable is recommended when the SITRANS SL is located at an inconvenient physical location.
Application planning 3.2 Network and system integration 3.2 Network and system integration 3.2.1 Overview The communication interface of SITRANS SL can be configured for transfer and processing of the measurement data as follows: ● Analog I/O and digital I/O system configuration; ● PROFIBUS DP system configuration; ● Modbus system configuration. The system configuration of the SITRANS SL is defined according to the communication code within its order number.
Application planning 3.2 Network and system integration 3.2.2 Analog I/O and digital I/O system configuration 3& 3* IRU HQJLQHHULQJ DQG VHWXS VXSSRUW 6,0$7,& 0DQDJHU 67(3 $XWRPDWLRQ V\VWHP 'LJLWDO RXW $QDORJ RXW $QDORJ LQ Figure 3-1 Example of a system configuration with analog I/O and digital I/O System features: ● The SITRANS SL is controlled by the automation system via analog I/O and digital I/O.
Application planning 3.2 Network and system integration Necessary equipment Hardware Name Comment SITRANS SL Analyzer PLC (e.g. S7-315-2DP) Automation system Analog configuration From automation system to analyzer Siemens SIMATIC MPI Cable For PLC configuration I/O-module (e.g. SM374) – in/out16 (optional) For connecting external sensors External sensors (optional) For process gas temperature and pressure Software 34 Name Comment Automation system software (e.g.
Application planning 3.2 Network and system integration 3.2.3 PROFIBUS DP system configuration 3& 3* IRU HQJLQHHULQJ DQG VHWXS VXSSRUW 6,0$7,& 0DQDJHU 67(3 352),%86 '3 Figure 3-2 $XWRPDWLRQ V\VWHP EXV WDS RII RU UHSHDWHU EXV WDS RII RU UHSHDWHU Example of a system configuration with PROFIBUS DP System features: ● The SITRANS SL is controlled by the automation system via PROFIBUS DP. ● The measurement results from the SITRANS SL are output to the automation system via PROFIBUS DP.
Application planning 3.2 Network and system integration Necessary equipment Hardware Name Comment SITRANS SL PROFIBUS Slave PLC (e.g. S7-315-2DP) PROFIBUS Master PROFIBUS Cable For PROFIBUS Master – Slave configuration Siemens SIMATIC MPI Cable For PLC configuration External sensors (optional) For process gas temperature and pressure Software 36 Name Comment PROFIBUS system software (e.g.
Application planning 3.2 Network and system integration 3.2.4 Modbus system configuration 3& 3* IRU HQJLQHHULQJ DQG VHWXS VXSSRUW 6,0$7,& 0DQDJHU 67(3 5& 7HUPLQDWLRQ 3OXJ Automation system with Modbus master 7 &RQQHFWLRQ 7 &RQQHFWLRQ 5& 7HUPLQDWLRQ 3OXJ 7 &RQQHFWLRQ Figure 3-3 Example of a system configuration with modbus System features: ● The SITRANS SL is controlled by the automation system via Modbus.
Application planning 3.2 Network and system integration Necessary equipment Hardware Name Comment SITRANS SL Modbus Slave PLC (e.g. S7-315-2DP) Automation system Modbus module CP442-5 Modbus Master Modbus Cable For Modbus Master – Slave configuration Siemens SIMATIC MPI Cable For PLC configuration External sensors (optional) For process gas temperature and pressure Software Name Comment Modbus system software (e.g.
4 Installing 4.1 Safety information Electric safety WARNING It is essential that you observe the given information and warnings! Failure to do may result in death, severe injuries, and/or damage to equipment and environment. The analyzer SITRANS SL meets all regulations specified in the present EU regulations (LVD regulation 2006/95/EC and EMC regulation 2004/108/EC) as well as those of the American market (FM approved version available). Laser safety SITRANS SL is classified as a class 1 laser product.
Installing 4.2 Mounting Outdoor cabling Note If cables are to be installed outdoors an UV protection shall be considered. A UV protective hose for outdoor use is available as accessory (see list of accessories in chapter (Page 193)) Liability Following commissioning, the total responsibility is with the owner. 4.2 Mounting 4.2.1 Mounting conditions During operation the permissible ambient temperature as stated in the must not be exceeded.
Installing 4.2 Mounting 4.2.2 Preparations CAUTION Risk of damage due to high temperature The temperature on the process side of the wedge window must not exceed 200 °C (392 °F).The maximum permissible temperature of the flange is 70 °C (158 °F). For these applications we recommend a process-side purging with a permanent temperature monitoring. Before the sensor can be installed at the measurement point, process flanges have to be welded onto the measuring site.
Installing 4.2 Mounting At installation of the SITRANS SL, the laser and the photo-detector have to be aligned to the optical axis of the sensor pair. Note that each sensor has an optical axis of its own which is its axis of symmetry. In addition the sensor body is at an angle to this axis. The reason for this is that the laser beam passes a wedged window before exiting. This wedge window will refract the beam approximately 1.5°. The following figure illustrates this.
Installing 4.2 Mounting 4.2.3 Installation of process flanges Preparation The amount to which the axis can be adjusted is ± 1° which means that the process flanges must be welded on the process wall to each other with this accuracy or better - see the following figure.
Installing 4.2 Mounting 4.2.4 Installation of the sensors Device position The SITRANS SL may be mounted in any direction. When mounting the sensors the large springs of the alignment flanges must face downwards. Proceed as follows: 1. Check that the flanges are installed properly. 2. Mount the receiver and transmitter, both with gaskets on the flanges and cross-tighten the bolts. 3. Align the sensors as described in section Alignment of SITRANS SL (Page 57).
Installing 4.2 Mounting 4.2.5 Installation of the purging tubes Note The purging tubes are unsymmetrical with slanted ends and must be mounted such that the larger side of the tube end points against the direction of the process flow. The purging tubes ① are mounted by clamping the purging tube flange ⑤ between the customer flange ② and the SITRANS SL process interface ④. The sealing is accomplished by the two process gaskets ③ as shown in the following figure.
Installing 4.3 Electric connections non Ex 4.3 Electric connections non Ex EMC and NAMUR The following must be observed regarding EMC and NAMUR: CAUTION This is a Class A product. In a domestic environment this product may cause radio interferences in which case the user may be required to take adequate remedial measures Operating SITRANS SL Since the device is delivered without cabling the user must provide this. An appropriate cable layout is described in section 3.1.
Installing 4.3 Electric connections non Ex 4.3.1 System set-up (non Ex only) Install the cables in the transmitter sensor and receiver sensor according to the following figures.
Installing 4.3 Electric connections non Ex 4.3.2 Screw terminals Receiver housing CAUTION Damage to the equipment Damage to the equipment may result from short-circuit. No conductors of a cable may be left unconnected inside the SITRANS SL receiver or transmitter. Any unused conductor must be connected to the analyzer housing. NOTICE No Ethernet connection possible If Ethernet is connected to a permanently installed cable, the Ethernet jack inside the receiver may not be used.
Installing 4.
Installing 4.
Installing 4.
Installing 4.3 Electric connections non Ex 4.3.3 Connecting cables Sensor connection cable The sensor connection cable connects the receiver and the transmitter of the SITRANS SL. The sensor connection cable is used to transfer: ● 100 kbps RS-485 communication and synchronization ● power for the transmitter ● ground.
Installing 4.3 Electric connections non Ex Receiver junction box Ex-e Note The junction box of the receiver unit is the same for both ATEX applications and sensor connection cable kit for non Ex applications.
Installing 4.3 Electric connections non Ex Connection cable Table 4- 3 Electric connections for analog I/O and Modbus connection cable, valid for non Ex product versions Terminals in receiver junction board + 2 - 3 Closed when energized 4) Digital OUT 0 (relay) 30 V, 0.5 A 3) Closed when energized 4) Digital OUT 1 (relay) 30 V, 0.5 A 3) 7 + 8 - Digital IN 0 0 ...
Installing 4.3 Electric connections non Ex Table 4- 4 Electric connection for PROFIBUS connection cable (accessory) Conductor color/no. Connector position (Receiver junction board) Remarks Function 1 (black) 1 + Supply voltage 19 ... 30.3 VDC, 10 VA 2 (black) Chassis Red 13 A line RS 485 Green 14 B line communication 3 (black) 2 - Supply voltage 19 ... 30.
Installing 4.3 Electric connections non Ex Example: Analog out 0 &XVWRPHU VLGH ,PHDV 9 5ORDG Figure 4-12 ! 6,75$16 6/ Using analog output ● V0 must be minimum 7.5 V and maximum 30 V DC. ● Rload can be maximum ((V0 – 7.5 V)/0.025 A) Ω. Note SITRANS SL provides no supply voltage for the analog outputs, i.e.
Installing 4.4 Alignment of SITRANS SL 4.4 Alignment of SITRANS SL Both sensors of the SITRANS SL have to be aligned such that the laser beam from the transmitter hits the photo detector in the receiver. To facilitate this both transmitter and receiver have a spherical surface incorporated in the flanges. The alignment is done by adjusting the position of the flanges on this surface by means of two adjustment screws and thus pointing the axis of symmetry - see following figure.
Installing 4.4 Alignment of SITRANS SL 4.4.1 Alignment kit Note The alignment kit is not part of the delivery. If you commission the analyzer yourself, you need to order the alignment kit additionally. The alignment kit is necessary to align SITRANS SL.
Installing 4.4 Alignment of SITRANS SL 4.4.2 Alignment procedure CAUTION Alignment procedure Correct alignment is crucial for proper operation of the analyzer. The alignment procedure has to be carried out with utmost care. 1. Before mounting the alignment kit, make sure that the contact surface between flange and the alignment kit is clean. 2. During the adjustment procedure make sure that you have obtained the smallest possible focal spot and that it is positioned at the very center of the crosshair. 3.
Installing 4.4 Alignment of SITRANS SL The complete procedure for the alignment is described as follows starting with the receiver side. Note It is also possible to start with the transmitter side but it is always necessary to align both sides. 1. Release the clamp ring on the RTU (receiver tube unit) using the wrenches. Support the receiver when releasing. 60 2. Remove the receiver unit 3.
Installing 4.4 Alignment of SITRANS SL Now go to the transmitter side! 4. Release the clamp ring on the TTU (transmitter tube unit) using the wrenches. Support the transmitter when releasing. 5. Remove the TTU. 6. Remove the fine aligning unit from the aiming tool base by loosening the securing screw without taking it off. Carefully slide the fine aligning unit out. Attach the aiming tool base.
Installing 4.4 Alignment of SITRANS SL 8. Now you will see a light spot from the light source, provided it is turned on. Focus by moving the outer part as indicated in the adjacent figure until you get the smallest and sharpest possible spot. The size of the square spot depends on the distance between the receiver and the transmitter; the longer the path the smaller the spot. Use the lens hood to suppress ambient light for a better visibility of the focused light. 9.
Installing 4.4 Alignment of SITRANS SL 11. Now you will see a bigger light spot from the light source. Focus by moving the outer part as indicated in the adjacent figure until you get the sharpest possible spot. 12. Align the transmitter using the supplied Allen key until the focused spot appears in the center of the crosshair corresponding to your SITRANS SL variant in the following table: MLFB no. Target 7MB6221-?AB.. 7MB6221-?AC.. 7MB6221-?AD.. 7MB6221-?JC.. B B B A 13.
Installing 4.5 Purging 4.5 Purging The easiest way to avoid condensation and dust deposits on the sensor windows or excessively high thermal load of the windows and the sealing material as well as the sensor electronics is to purge them, e.g. with air. Purging must be selected depending on the application. The sensors can therefore be configured for the respective situation. There are two different types ● Purging of optical process interfaces ● Purging of sensors.
Installing 4.5 Purging Note When continuous purging is needed, make sure that the purging gas rate is 3 to 5 l/min. This rate assures that there is time enough to flush all measurement components out of the sensor. Purging with nitrogen on the sensor side is almost always necessary for O2 applications to avoid an offset caused by the oxygen of the air present in the unit. The cells in the sensor head are then continuously purged with nitrogen.
Installing 4.5 Purging 4.5.3 Purging set-up Mount the purging connectors according to the following procedure (see the following figure): 1. Remove the plugs from the RTU/TTU and the process flange. 2. Mount the needle valves and the exit aperture. 3. Attach a piece of 6 mm tubing to the needle valves and route it to an appropriate purging gas source. CAUTION Make sure that the purge gas quality is sufficient to avoid rapid degradation of the visibility in the optical path.
Explosion protection 5.1 ATEX 5.1.1 Safety information 5 Electric Safety The SITRANS SL ATEX version is delivered with an approval for use in hazardous environments in which explosive gases are in use. WARNING Observe the specifications of the examination certificate valid in your country. Observe the laws and regulations valid in your country for the electric installation in hazardous areas with risk of explosion.
Explosion protection 5.1 ATEX WARNING Never switch on or operate an analyzer with lid open. Before opening the device wait at least two minutes after de-energizing. Make sure that externally powered signals also shall be de-energized. For secure disconnection of all signals the device should be operated in hazardous areas only via a switch-off unit placed outside the hazardous area.
Explosion protection 5.1 ATEX Materials in the sensor pair The sensor pair (transmitter and receiver) is built mainly using stainless or surface treated steel and Aluminium 231 (maximum magnesium content 0.5%). The O-rings and gaskets used are made of FKM (fluorine-polymer) or FFKM (perfluoro elastomer). The process interface consists of a borosilicate glass window and an O-ring made of FKM. If the gas purging of the sensor will fail the O-rings will be the limiting component for the temperature.
Explosion protection 5.1 ATEX 5.1.2 Installation ATEX The installation of the ATEX sensors can be performed by the customer provided the instructions given in the certificate are fully observed. CAUTION The ATEX certificate is a system certificate and is only valid if SITRANS SL is installed according to the instructions given in the certificate. Note SITRANS SL must be shut off and disconnected before reconnections are done.
Explosion protection 5.1 ATEX 5.1.3 ATEX system set-up The figure below shows the cabling of the transmitter and receiver sensors.
Explosion protection 5.
Explosion protection 5.1 ATEX 5.1.4 Electric connections in the ATEX system The electric connections are done in two junction boxes between the receiver and the transmitter and in one junction box connecting the customer cable. The connections inside the unit housings are done in the factory before delivery and work here can only be done by certified technicians. The tables below illustrate the connections in the main junction box providing all in- and output connectors to the SITRANS SL.
Explosion protection 5.
Explosion protection 5.1 ATEX Connection cable Table 5- 4 Electric connections for connection cable analog and Modbus, valid for ATEX product versions Conductor color Connector position (Receiver junction board) Remarks Function Red 1 + Supply voltage Blue 2 - 19 ... 30,2 V DC, 10 VA 1) Pink 3 Closed when Digital Out 0 (relay) Grey 4 energized 4) 30 V DC, 0.5 A 3) White 5 Closed when Digital Out 1 (relay) Brown 6 energized 4) 30 V DC, 0.
Explosion protection 5.1 ATEX Table 5- 5 Electric connection for PROFIBUS connection cable Conductor color/no. Connector position (Receiver junction board) Remarks Function 1 (black) 1 + Supply voltage 19 ... 30.3 VDC, 10 VA 2 (black) Chassis Red 13 A line RS 485 Green 14 B line communication 3 (black) 2 - Supply voltage 19 ... 30.
Explosion protection 5.1 ATEX Example: Analog out 0 &XVWRPHU VLGH ,PHDV 9 5ORDG Figure 5-7 ! 6,75$16 6/ Using analog output ● V0 must be minimum 7.5 V DC and maximum 30 V DC. ● Rload can be maximum ((V0 – 7.5 V)/0.025 A) Ω.
Explosion protection 5.2 FM 5.2 FM 5.2.1 Introduction The basic principles of explosion protection are the same all over the world. However, technologies have developed in North America in the field of explosion protection for electric equipment and installations which are considerably different from those of the IEC (International Electrotechnical Commission).
Explosion protection 5.2 FM WARNING Before opening the device wait at least two minutes after de-energizing. Make sure that externally powered signals are also de-energized. WARNING Never repair the device on site! Any components not mentioned in the spare parts list must be replaced or repaired by certified field service technicians. Failure to do so will also result in loss of FM approval. WARNING Before switching on the analyzer make sure that the housing is closed and grounded.
Explosion protection 5.2 FM Materials in the sensor pair The sensor pair (transmitter and receiver) is built mainly using stainless or surface treated steel and aluminium 231 (maximum magnesium content 0.5%). The O-rings and gaskets used are made of FKM (fluoro polymer) or FFKM (perflour elastomer). The process interface window is a made of borosilicate glass and contains an O-ring made of FKM. In the case that gas purging of the sensor fails the O-rings will be the limiting component for the temperature.
Explosion protection 5.2 FM 5.2.3 Installation of the FM version of SITRANS SL The installation of the FM sensors can be performed by the customer provided the instructions given in the certificate are fully observed. CAUTION The FM certificate is a system certificate and is only valid if SITRANS SL is installed according to the instructions given in the certificate. Note SITRANS SL must be shut off and disconnected before reconnections are done.
Explosion protection 5.2 FM 5.2.4 FM system set-up Note The FM version of the SITRANS SL is delivered without cables.
Explosion protection 5.
Explosion protection 5.2 FM 1/2" NPT Figure 5-13 Thread size label SITRANS SL Verification of systems used in hazardous areas (Page 159) 5.2.5 Electric connections in the FM system The electric connections are done in the receiver and transmitter respectively. The tables below illustrate the connections in the receiver and the transmitter for the non PROFIBUS version. The terminals as well as their assignments are described in section Screw terminals (Page 48).
Explosion protection 5.2 FM Connection cable Table 5- 7 Electric connections for connection cable analog and Modbus, valid for FM product versions Terminals in receiver junction board Function/Power Supply voltage 19 ... 30.2 V, 10 VA 1) 1 + 2 - 3 Closed when energized 4) Digital OUT 0 (relay) 30 V, 0.5 A 3) Closed when energized 4) Digital OUT 1 (relay) 30 V, 0.5 A 3) 7 + 8 - Digital IN 0 0 ...
Explosion protection 5.2 FM Example: Digital out 0 &XVWRPHU VLGH ,PHDV 9 5ORDG Figure 5-14 ! 6,75$16 6/ Using digital output ● V0 can be maximum 30 V DC. ● Rload must be minimum 60 Ω (max. 0.5 A in the relay). Example: Analog out 0 &XVWRPHU VLGH ,PHDV 9 5ORDG Figure 5-15 ! 6,75$16 6/ Using analog output ● V0 must be minimum 7.5 V DC and maximum 30 V DC. ● Rload can be maximum ((V0 – 7.5 V)/0.025 A) Ω. Note SITRANS SL provides no supply voltage for the analyzer outputs, i.e.
Commissioning Commissioning 6.1 6 General information for commissioning Device position The SITRANS SL may be mounted in any direction. When mounting the sensors the large springs of the alignment flanges must face downwards. All purging outlets must face downwards. Operation WARNING Dangerous voltage Certain parts in the analyzer carry dangerous voltages which can become accessible as a result of an open cover. Before you commission the device make sure that it is properly closed.
Commissioning 6.2 Starting SITRANS SL for the first time 6.2 Starting SITRANS SL for the first time 6.2.1 Defining the path length It is recommended that the open ends of the purging tubes represent the reference points from which the path length is determined. When the flanges are permanently installed, measure the distance between the outside of the flanges with an accuracy of at least ±10 mm (±0.4").
Commissioning 6.3 PROFIBUS configuration for SITRANS SL 6.2.2 Further input parameters Input of process temperature The process temperature can either be input using an external sensor or entered as a fixed value using the remote control, see also Electric connections non Ex (Page 46) and General (Page 111) .
Commissioning 6.3 PROFIBUS configuration for SITRANS SL 6.3.2 System integration The user data which are provided over the PROFIBUS line to the process control system are based on the target configuration. The following example is from a Siemens STEP7 project, and demonstrates how to configure the cyclic DPV0 data exchange. Overview of installation and configuration steps 1. SIMATIC MPI cable installation 2. PG/PC Interface setting 3. Loading GSD file 4. Network configuration with the SIMATIC Manager 5.
Commissioning 6.3 PROFIBUS configuration for SITRANS SL 6.3.4 PG/PC interface setting The SIMATIC MPI cable setting has to be made using the "Set PG/PC Interface" window from the Options menu. Prerequisite: The connection between the PC and SITRANS SL has been established. The SIMATIC Manager is installed on the PC and the Windows XP operating system has been started. Procedure: Start the operating program "Set PG/PC Interface" (start bar Start ➜ Programs ➜ SIMATIC ➜ Options ➜ Set PC-PG Interface). 1.
Commissioning 6.3 PROFIBUS configuration for SITRANS SL 6.3.5 Loading GSD file You use the SIMATIC Manager to load the GSD file of SITRANS SL. Procedure: Start the operating program "SIMATIC Manager" (start bar Start ➜ Programs ➜ SIMATIC ➜ SIMATIC Manager). 1. Select the "Open" command in the menu "File". 2. Select the project of SITRANS SL. 3. Double click on "Hardware" for opening "HW Config".
Commissioning 6.3 PROFIBUS configuration for SITRANS SL 4. Select the "Install GSD file..." in the menu "Options". 5. Close the opened project in HW Config.
Commissioning 6.3 PROFIBUS configuration for SITRANS SL 6. Navigate to the corresponding GSD file using the button "Browse" on your hard drive. 7. Mark in the selection list the GSD file and press the button "Install". 8. Finish the installation of the GSD file by pressing the button "Close".
Commissioning 6.3 PROFIBUS configuration for SITRANS SL 6.3.6 Network configuration with SIMATIC Manager The SIMATIC Manager Step7 is the network configuration tool that will be used to configure the PROFIBUS DP network. SIMATIC Manager uses GSD files in order to know the properties of the devices in the network configuration. The configuration is then loaded to the PLC for informing the PLC about the PROFIBUS slaves in the network.
Commissioning 6.3 PROFIBUS configuration for SITRANS SL 6.3.7 Creation of a new project with SIMATIC Manager You create a new STEP 7 project using the SIMATIC Manager. Procedure: 1. Start the operating program "SIMATIC Manager" (Start bar Start ➜ Programs ➜ SIMATIC ➜ SIMATIC Manager). 2. Create a new project in the SIMATIC Manager with the File ➜ "New Project" Wizard menu command. Reaction: The STEP 7 Wizard: "New Project" opens.
Commissioning 6.3 PROFIBUS configuration for SITRANS SL 3. Click the button "Next". Reaction: The STEP 7 Wizard: "New Project" opens a dialog box for selecting the CPU.
Commissioning 6.3 PROFIBUS configuration for SITRANS SL 4. Pick your required CPU from the selection list and click the button "Next". Reaction: The STEP 7 Wizard: "New Project" opens a dialog box for selecting the blocks. 5. In the selection list mark the check boxes for OB1 (program cycle execution block), OB100 (complete restart) and OB35. Note OB1 is the block which is continuously active in the background. OB100 is the block which is called once during the startup of the PLC.
Commissioning 6.3 PROFIBUS configuration for SITRANS SL 6. Click the button "Next". Reaction: The STEP 7 Wizard: "New Project" opens a dialog box for setting the project name. Type the name or pick an existing one. 7. Click the button "Finish". Reaction: The STEP 7 project is created with the organization blocks OB1, OB100 and OB35.
Commissioning 6.3 PROFIBUS configuration for SITRANS SL ● Optionally you can add the organization blocks from OB80 to OB88 with the menu command Insert ➜ S7 Block ➜ Organization Block.
Commissioning 6.3 PROFIBUS configuration for SITRANS SL 6.3.8 Hardware configuration Creating PROFIBUS Network Procedure: 1. Double click on "Hardware" for opening "HW Config" in the selection list on the left hand side of the project window SIMATIC 300 Station. 2. In the selection list mark "(0)UR" DP item. 3. Click with the right mouse button on the DP item and then click on "Add Master System".
Commissioning 6.3 PROFIBUS configuration for SITRANS SL PROFIBUS Network Configuration 1. Mark in the selection list "PROFIBUS(1): DP master system (1)" with the right mouse button. 2. Enter the dialog box 'Network Settings' in "Properties -PROFIBUS" 3. In the selection lists pick your object properties.
Commissioning 6.3 PROFIBUS configuration for SITRANS SL SITRANS SL Configuration Prerequisite: ● SITRANS SL is selected from the hardware catalog and placed into PROFIBUS DP master system. ● The appropriate measurement type telegram is selected and placed into SITRANS SL slots starting from the first empty slot. Procedure: Modify the I/O addresses of the modules to your needs. 1. ´Select the measurement type from the selection list "Selection of the Present Configuration", e. g. O2 Measurement.
Commissioning 6.3 PROFIBUS configuration for SITRANS SL 2. Select the subnet type from the selection list "Properties - PROFIBUS interface SITRANS SL".
Commissioning 6.3 PROFIBUS configuration for SITRANS SL 3. In the HW Config window you can check the number of blocks and the address assignment. Measurement Type Selection ● Concentration measurement output First input module in the first slot. Consists of 4 byte float value and 1 byte status value. ● Transmission value (absolute transmission) output Third input module in the third slot. Consists of 4 byte float value and 1 byte status value. ● Temperature input: First output module in the fifth slot.
Commissioning 6.4 Modbus configuration for SITRANS SL 6.4 Modbus configuration for SITRANS SL 6.4.1 Modbus settings Modbus settings are configurable via LUI. Detailed information about the parameters can be found in the Generic Modbus device specification. Default values of the Modbus settings are stored in the ModbusConfig.xml. If these parameters are modified by customers, the modified paramters will be stored in the EEPROM and then be effective.
Commissioning 6.4 Modbus configuration for SITRANS SL 6.4.3 Supported Modbus functions Modbus defines a set of data and control functions to perform data transfer and slave diagnostic.
Commissioning 6.
7 Operation The following description contains an overview of the operating functions which you can perform on the device. You can operate the device using the remote control or the local user interface (LUI). This includes the setup of PROFIBUS, Modbus, analog and digital inputs and outputs. WARNING Dangerous voltage Certain parts in the analyzer carry dangerous voltages which can become accessible as a result of an open cover. Before you switch on the device make sure that it is properly closed.
Operation CAUTION During operation only use remote control To operate the device directly via the buttons on the LUI PCB you have to unscrew the lid. Doing so airborne substances may intrude into the device thus leading to a possible damage. To avoid this always operate the device using the remote control. Operations via the buttons on the LUI PCB are only allowed for test and service purposes. Remote control SITRANS SL can be operated at site with an infrared remote control.
Operation 7.1 General 7.1 General NOTICE Dynamic behaviour of the Local User Interface LUI The LUI will time out, exit the current menu and return to measurement view when no key has been pressed for 10 minutes. Password-protected functions will be relocked. Navigating in the menu system The LUI can be operated either by means of the buttons on the PCB, or preferably by means of the enclosed remote control. To enter the menu, press the right key.
Operation 7.1 General Examples Path length Edit path length Scaling Edit lower value Table 7- 2 Key functions when editing Edit action Key on remote control Move to digit and and Alter digit Press digit number key Delete digit C Use to select # Insert *) Use to select > Decimal point . Use to select .
Operation 7.1 General Saving settings When a change has been made to a setting the new value is immediately used by the analyzer. The value is however not yet stored permanently, i.e. after a power failure the old value(s) will be used. To store the new value(s), press left key or Esc key repeatedly to move back to the main menu, then press left key or Esc key once more to exit the menu. The LUI will now inform that changes have been made and display the save settings dialogue.
Operation 7.2 Measurement views 7.2 Measurement views Measurement view Gas component, e.g. O2 Pressure Temperature Transmission When not being edited, the SITRANS SL LUI displays the Measurement view containing the following information: ● Present measured components with corresponding Value and Unit. ● Alarm status icon or icons, if multiple alarms are trigged. ● Alarm text.
Operation 7.3 Menu system 7.3 Menu system 7.3.1 The menu structure The main menu is entered by pressing To exit press Changes are saved when the main menu is exited. In the following menu structures white boxes indicate selection screens, grey boxes indicate edit screens, and black (inverted) boxes represent displays without any user interactions.
Operation 7.3 Menu system 7.3.
Operation 7.3 Menu system Path length View/edit path length in meters with three decimal digits. Temperature correction This menu is dynamic; at first level you're asked to "Set source" which then displays a list of all available temperature inputs. The example in the following display sequence shows the steps to change the source from analog input to manual input.
Operation 7.3 Menu system Digital outputs The digital outputs are realized as relays providing the following functions: ● Assign alarm(s) from the alarm list to a digital output. Possible settings are: – M(aintenance) fault – M demanded – M required – P(rocess) V(alue) fault – PV warning – PV tolerance – No data exchange – Local override – Configuration warning – Data exchange – Device unlocked To assign or cancel an alarm use the (right arrow) button.
Operation 7.3 Menu system Output configuration The analyzer produces several measurements, referred to as components. Each component can have several outputs. The measurement view of the LUI is also an output. The outputs are arranged by components. After selecting component a list of all output channels for this component is displayed. After selecting an output, the settings for this output are displayed. The number of settings available depends on the type of output.
Operation 7.3 Menu system 7.3.3 Diagnostics 0DLQ 0HQX 'LDJQRVWLFV 9LHZ ORJ ERRN /RJ YLHZHG ERRN JURXSV /RJ HUURUV LQ VHOHFWHG JURXS &OHDU ORJ ERRN Figure 7-5 The diagnostics menu View log book The condition monitoring functions of the analyzer generates status messages, warnings and alarms. In this text the severity level of the alarm is disregarded and all status information is referred to as alarms. An alarm can go active at a certain time and then passive if the erroneous condition disappears.
Operation 7.3 Menu system The log book groups screen The alarms are arranged in groups. The first screen of the logbook displays all groups that have had an alarm event since the logbook last was cleared. Example + G 1 0 0 3 8 1 : 0 Seconds Minutes Hours Days Group name + (active) - (inactive) The groups are displayed in a compact format; each row contains the current status, the group name and a time-stamp for the last change.
Operation 7.3 Menu system 7.3.4 Service 0DLQ 0HQX 6HUYLFH $ERXW /LVW RI V\VWHP SDUDPHWHUV &DOLEUDWH /LVW RI FRPSRQHQWV 0HDVXUHG YDOXH GLVSOD\HG 6HWSRLQW HGLW &DOLEUDWH &RQILUP $QDORJ RXWSXW WHVW 6HOHFW RXWSXW &RQILUP HQWHU WHVW PRGH $QDORJ LQSXW WHVW 6HOHFW LQSXW &XUUHQW YDOXH GLVSOD\HG 'LJLWDO LQSXW WHVW &XUUHQW VWDWH GLVSOD\HG IRU HDFK LQSXW 9LHZ VSHFWUXP Figure 7-6 122 5HVXOW 2.
Operation 7.3 Menu system About SITRANS SL Informative display informs about the following system parameters: ● Analyzer serial number ● Analyzer revision ● Application name ● Software Version ● MLFB (order) number ● Transmitter FPGA ● Receiver FPGA ● Transmitter PLD ● Junction PLD Calibrate CAUTION Never use this function without having contacted Siemens service first! Inappropriate use of this function may seriously affect the accuracy of the analyzer.
Operation 7.3 Menu system Analog input test Select input to monitor ● Analog temperature input ● Analog pressure input The current reading for the selected input is displayed and continuously updated. Digital input test Sitrans SL provides one configurable binary input for quality information of external sensors. This binary input is mapped within the application software to input 0 and input 1. Both inputs are displayed and continuously updated.
Operation 7.3 Menu system 7.3.
Operation 7.3 Menu system TCP/IP Menu leads to editing screens for the setting of ● IP Address ● Subnet Mask ● Gateway PROFIBUS Menu leads to the editing screen for the setting of ● PROFIBUS address After changing the parameter the analyzer must be reset before the new setting takes effect.
Operation 7.3 Menu system 7.3.6 Security 0DLQ 0HQX 6HFXULW\ 8QORFN (QWHU SDVVZRUG /RFN Figure 7-8 The security menu Unlock Enter password "111" to unlock write protection. This enables editing of the settings available in the LUI. Lock Locks the LUI. Settings can be viewed but not edited. Indicator The state of the menu (locked/unlocked) is indicated by a symbol in the upper left corner of the display ( means locked, means unlocked).
Operation 7.3 Menu system 7.3.7 Language 0DLQ 0HQX /DQJXDJH Figure 7-9 /LVW RI ODQJXDJHV VHOHFW 6DYH VHWWLQJV 5HVWDUW The language menu Select language from the list of available languages. After change of language the analyzer must save settings (user confirmation) and then restart (user confirmation) before the new setting takes effect.
Interfaces to automation systems Interfaces to automation systems 8.1 8 PROFIBUS DP interface Note You can obtain further information from the PROFIBUS user organization or on the Internet at (www.profibus.com). 8.1.1 PROFIBUS installation When you use the PROFIBUS DP interface then use the designated PROBIBUS DP cable, e.g. the PROFIBUS DP hybrid cable which includes instrument power and ground conductors.
Interfaces to automation systems 8.1 PROFIBUS DP interface To install the SITRANS SL as a device in-between other devices on a PROFIBUS segment: 1. Ensure that the termination resistor is turned off. 2. Connect the PROFIBUS hybrid cable to the SITRANS SL receiver. 3. Use a junction box to connect supply voltage to the PROFIBUS hybrid cable. 4.
Interfaces to automation systems 8.1 PROFIBUS DP interface Safe operation For safe operation of PROFIBUS DP note the following points: ● Observe the general PROFIBUS guidelines for installation. ● When installing the SITRANS SL as the only analyzer, or as the last analyzer in a PROFIBUS DP network: – Ensure to switch on the terminal resistor on. The switch is found next to the screw terminals in the receiver unit.
Interfaces to automation systems 8.1 PROFIBUS DP interface 8.1.4 Cyclic data transmission over PROFIBUS 8.1.4.1 Cyclic data structure Specific parameters physical block for passive bus tap-off The following user data can be exchanged cyclically using the PROFIBUS. Parameter name Meaning Direction seen from gas analyzer Data type Length in byte Concentration Measured value and status. Output DS-33 5 Transmission Measured value and status. Output DS-33 5 Pressure Process pressure in mbar.
Interfaces to automation systems 8.1 PROFIBUS DP interface 8.1.4.2 Quality byte Meaning of status A status byte is transmitted synchronously in addition to each of the measured values in the DS-33 data structure. This byte provides indication of the quality for this value in a "quality code". Due to this it is henceforth referred to as "quality byte".
Interfaces to automation systems 8.1 PROFIBUS DP interface Quality byte coding for measurement output: Status coding for "bad quality" Dec Hex Cause Remedy 00 00 Maintenance fault or process value fault. See alarm list. Status coding for "uncertain quality" Dec Hex Cause Remedy 64 40 Maintenance demanded or process value warning or process value out of tolerance. See alarm list. Dec Hex Cause Remedy 128 80 Normal operation. You can evaluate the measured values.
Interfaces to automation systems 8.1 PROFIBUS DP interface Quality byte coding of input values for process pressure and process temperature: Status coding for "bad quality" Dec Hex Cause Error codes and remedy 00 00 Quality status of source is bad. Depending on the PROFIBUS source the quality status is mapped to error code E12 for temperature or E16 for pressure. 01 01 Quality status of source is bad and temp. or pressure is low limit.
Interfaces to automation systems 8.2 Modbus interface 8.2 Modbus interface Note You can obtain further information from the Modbus IDA user organization or on the Internet at the Modbus internet site (www.modbus.org). 8.2.1 Modbus installation Connection via RS485 interface The SITRANS SL gas analyzer provides Modbus communication to a PC or an automation system via an RS485 interface. The SITRANS SL gas analyzer may be connected to a network.
Interfaces to automation systems 8.2 Modbus interface 8.2.2 SITRANS SL Modbus map for gas measurement Information from the SITRANS SL can be transferred to a PC/PG via the Modbus. Measurement values, status signals and also signals of analog and digital inputs and outputs are thus available for further usage.
Interfaces to automation systems 8.2 Modbus interface 8.2.3 Quality byte coding Overview quality byte coding The Modbus quality byte has the same structure and meaning as the one used for PROFIBUS. Structure and meaning of quality byte: 06% 4XDOLW\ 6XE VWDWXV /LPLWV EDG XQFHUWDLQ JRRG JRRG FDVFDGHG 2XWSXW YDOXH 6XE VWDWXV LV DOZD\V VHW WR ,QSXW YDOXH 6XE VWDWXV LV QRW HYDOXDWHG Figure 8-2 2.
Interfaces to automation systems 8.2 Modbus interface Quality byte coding for measurement output: Table 8- 1 Status coding for "bad quality": Dec Hex Cause Remedy 00 00 Maintenance fault or process value fault. See alarm list Table 8- 2 Status coding for "uncertain quality": Dec Hex Cause 64 40 Maintenance demanded or process value See alarm list. warning or process value out of tolerance.
Interfaces to automation systems 8.2 Modbus interface Table 8- 5 Status coding for "uncertain quality": Dec Hex Cause Remedy 64 40 Quality status of source is uncertain Depending on the Modbus source the quality status is mapped to error code E23 for temperature or E24 for pressure. 65 41 Quality status of source is uncertain and temp. or pressure is low limit Temperature: E23 & E13 Quality status of source is uncertain and temp.
Interfaces to automation systems 8.2 Modbus interface 8.2.4 Modbus adresses 8.2.4.1 Standard Modbus ● The component value is transferred in IEEE 32 bit floating point format. SITRANS SL uses two word registers representing a floating point value. ● The measurement counter is transferred in 32 bit integer format. SITRANS SL uses two Word-Registers representing a 32 bit integer value. ● The time stamp fields (day, hour, minute, and second) are transferred in 16 bit integer format.
Interfaces to automation systems 8.
Interfaces to automation systems 8.2 Modbus interface 8.2.4.2 Enron Modbus This section describes the Enron Modbus register group numbers for the SITRANS SL gas analyzer. Register numbers are used to identify specific data items to be read or written. Registers are grouped by data type. The following table depicts SITRANS SL Enron Modbus register group numbers.
Interfaces to automation systems 8.
Interfaces to automation systems 8.2 Modbus interface Modbus addresses 5000 ... 5999 Long Integer registers Access to long integer data is an extension of the Gould Modbus ASCII protocol.
Interfaces to automation systems 8.2 Modbus interface 8.2.4.3 Modbus alarm list The status information is transferred in 32 bit integer words. SITRANS SL uses four WordRegisters representing the detailed status information.
Interfaces to automation systems 8.2 Modbus interface Status Word 2 Status Register description DWORD BIT position Description Error Code 2 0 "CurveFit gas file range" E33 2 1 "NH3 outside range" E34 2 2 "O2 outside range" E35 2 3 "H2O outside range" E36 2 4 "HF outside range" E37 2 5 "H2S outside range" E38 2 6 "HCl outside range" E39 2 7 "HCN outside range" E40 2 8 "CO outside range" E41 2 9 "CO2 outside range" E42 2 10 "Temp.
Interfaces to automation systems 8.2 Modbus interface Status Word 3 Status Register description DWORD BIT position Description Error Code 3 0 "Laser drift" E65 3 1 "Algorithm error" E66 3 2 "Measurement quality" E67 3 3 "Line locking failure" E68 Status Word 4 Not used.
Service and maintenance 9.1 9 Instrument verification The SITRANS SL should be verified within the time interval stated in the Technical data (Page 181). This procedure can be done by the customer or the Siemens Service. The verification of the instrument shall only be performed with the appropriate verification kit (see accessory list in section "Accessories (Page 193)"). Each verification process should be documented.
Service and maintenance 9.1 Instrument verification 9.1.1 Verification with the verification tube The verification tube is intended for the oxygen version of the SITRANS SL (SITRANS SL O2). Necessary equipment ● Verification kit ● Sensor connecting cable If your regular sensor connection cable cannot be removed from the installation, you need a supplementary one. ● A barometer to measure the atmospheric pressure 9.1.1.
Service and maintenance 9.1 Instrument verification 9.1.1.2 Span verification For the span verification of the instrument follow steps 1 through 7 below. This process should be documented using the form "Verification Sheet" in Appendix A (Page 198). Step 1: Setup of verification tube 1. Start the procedure by removing the receiver and transmitter from the flanges.
Service and maintenance 9.1 Instrument verification 6. Note pressure source settings and, if applicable, pressure manual value in the verification sheet. Set the pressure source to "manual" and enter the ambient pressure as manual value. Note this value also in the verification sheet. 7. Note temperature source settings and, if applicable, temperature manual value in the verification sheet. Set the temperature source to "manual". Note this value also in the verification sheet.
Service and maintenance 9.1 Instrument verification 8. If you use ambient air, you can correct the verification set point according to the air moisture. Look for the ambient temperature on the x-axis of Fig. 9-2. Go vertically up to the line of the present ambient relative humidity. Go left horizontally and find your verification set point on the y-axis. Note this value in the "Verification Sheet".
Service and maintenance 9.1 Instrument verification Step 3: Purging with Nitrogen Note In the instruction it is assumed that totally oxygen free nitrogen is used. The concentration value of the SITRANS SL during this procedure will not be lower than the oxygen content in the nitrogen. 1. Attach your source of purging gas (N2) to the needle valve on either the receiever or transmitter side. 2. Close the other needle valve. 3. Purge the verification tube until the concentration value falls below 0.
Service and maintenance 9.1 Instrument verification Step 5: Verification 1. Watch or record the measured value for at least 20 seconds to ensure that it is stable (i. e. concentration varies not more than ±0.05 vol % / minute). 2. Take 5 successive concentration values and write them into the verification sheet. 3. If the difference between the highest and the lowest concentration value is more than the maximum repeatability value (see technical data (Page 181)), the measurements must be repeated. 4.
Service and maintenance 9.1 Instrument verification Troubleshooting: Insufficient purging If the oxygen concentration in the verification tube moves above 0.15 vol % after having been purged with nitrogen, this may be due to an elevated oxygen content inside the housing units. To remove that oxygen you can follow one of the two procedures below depending on your permission to open the lids of the housing.
Service and maintenance 9.1 Instrument verification 9.1.2 Verification with a verification cell The verification cell is intended for the carbon monoxide version of the SITRANS SL (SITRANS SL CO). The verification module is mounted between the transmitter tube unit (transmitter) and receiver tube unit (receiver) during verification. The verification kit consists of a metal tube and a gas filled glass cell with a defined gas concentration stated in the corresponding certificate. 9.1.2.
Service and maintenance 9.1 Instrument verification Step 2: Preparations and LUI settings In order to document the verification procedure you should fill out the 'SITRANS SL CO Verification sheet' form thoroughly during verification. 1. Make a copy of the "Verification sheet" form you can find in Annex A. 2. Fill out the first part (General Information). 3. Enter the password to access the Local User Interface (LUI) using the remote control.
Service and maintenance 9.1 Instrument verification Step 3: Verification 1. Watch or record the measured value for at least 20 seconds to ensure that it is stable (i. e. concentration varies not more than ±1 vol % of the reading). 2. Take 5 successive concentration values and write them into the verification sheet. 3. If the difference between the highest and the lowest concentration value is more than 1 %, the measurements must be repeated. 4.
Service and maintenance 9.2 Cleaning the optical parts of the sensor 9.2 Cleaning the optical parts of the sensor Preparations WARNING Danger of burns Due to hot process gases and/or purging media the sensors and their environment can become very hot.
Service and maintenance 9.2 Cleaning the optical parts of the sensor Cleaning of lens or the process interface window on the sensor side 1. Use an appropriate tool to release the clamp ring –– and pull the sensor out. 2. Remove all dust particles using pressurized air or flushing water. 3. Clean the optical surfaces with a soft cloth. Water with a small amount of soap or a mild detergent also works fine in many cases.
Service and maintenance 9.
10 Alarm, error, and system messages 10.1 Alarm Introduction In this chapter the word 'alarm' is used as a general term without referring to the alarm level, i.e. if it is a failure, a warning or just informative. The actions to be taken when an alarm trigged are specific to each alarm.
Alarm, error, and system messages 10.1 Alarm Alarm Triggering Generally a SITRANS SL alarm has three parameters: ● Triggering level ● Triggering time (TSet) ● Reset time (TRes) 76HW 75HV 76HW 0RQLWRUHG YDULDEOH 7ULJ OHYHO $ODUP VWDWH $ODUP 1R DODUP Figure 10-2 Alarm triggering Alarms with different behaviours or configurations are handled later in this chapter under the alarm description.
Alarm, error, and system messages 10.1 Alarm Reporting the Alarm Binary outputs For each alarm it is possible to select if it should affect none, one or both of the relays. Configuration for both outputs can be edited using the LUI user interface.
Alarm, error, and system messages 10.1 Alarm LUI The lower half of the measurement view (i.e. the standard view) of the LUI is designated for the alarm display. Once an alarm has been triggered the alarm text is displayed together with an icon. The icon indicates type and level of the alarm. If several alarms are simultaneously active, the most serious alarm is displayed.
Alarm, error, and system messages 10.1 Alarm Configuration fault The device cannot operate due to invalid configuration of parameters or hardware. Configuration warning Device might work, but one or more parameters are invalid. Default values are used instead. Configuration changed N/A Local override Output values are not actual measurements. Example: Test mode is active for an output.
Alarm, error, and system messages 10.1 Alarm Alarm groups The alarm groups are the base for alarm reporting on the conventional interface, i.e. relay outputs and failure signalling on analog outputs. The alarm groups are also used in the logbook.
Alarm, error, and system messages 10.
Alarm, error, and system messages 10.2 Alarm list 10.2 Alarm list SITRANS SL can produce alarms from the following list. Symbol/Group Error Code Alarm (description) Explanation/Action E6 Startup procedure active The system is starting up. This alarm should disappear when system has started. During normal ambient conditions the SITRANS SL should have started up within 5 minutes. Ensure that the ambient conditions are within the specifications for the SITRANS SL and restart the system if needed.
Alarm, error, and system messages 10.2 Alarm list Symbol/Group Error Code Alarm (description) Explanation/Action E2 Low transmission The system has been in transmission pending mode for too long. In transmission pending mode the analyzer will only regulate the laser temperature from the calculated drift. Ensure sufficient transmission by cleaning optical surfaces and re-alignment of the sensors. E3 Receiver power The power supply to the receiver is interrupted or not sufficient.
Alarm, error, and system messages 10.2 Alarm list Symbol/Group Error Code Alarm (description) E1 No transmission E12 Ext. temperature bad Explanation/Action Transmission is too low. The dust level in the optical path may be too high. If the fault remains at good visibility it may be necessary to clean the process windows and verify alignment. The state of the digital input indicates that the temperature value from the external sensor is bad.
Alarm, error, and system messages 10.2 Alarm list Symbol/Group Error Code Alarm (description) Explanation/Action E10 Process temp. range The process temperature input is out of the range specified for the application. E11 Process pressure range The process pressure is out of the range specified for the application. E13 Ext. temperature low limited The analog input from the temperature sensor is out of range. E14 Ext.
Alarm, error, and system messages 10.2 Alarm list Symbol/Group Explanation/Action Error Code Alarm (description) E57 EEPROM configuration missing E58 Save settings failed E09 Save settings active Configuration changed E55 Analog output test mode The test mode for analog outputs is active E56 Digital output test mode The test mode for digital outputs is active E25 PROFIBUS configuration error E26 PROFIBUS connection error E27 PROFIBUS master switch off PROFIBUS Master Switch Off.
Alarm, error, and system messages 10.
Alarm, error, and system messages 10.
Alarm, error, and system messages 10.3 PROFIBUS diagnosis and alarms 10.3 PROFIBUS diagnosis and alarms 10.3.
Alarm, error, and system messages 10.3 PROFIBUS diagnosis and alarms 10.3.2 Meaning of the diagnosis information Standard PROFIBUS-DP mechanisms are used to transport diagnosis information and to signal actively to the class 1 master. The DIAGNOSIS parameter from the Physical Block is then available to the master as diagnostic information.
Alarm, error, and system messages 10.3 PROFIBUS diagnosis and alarms Bit position Error text message in GSD file Error Code Unit_Diag_Bit(53) "Prs. comp. file range" E30 Unit_Diag_Bit(54) "CurveFit temp. file range" E31 Unit_Diag_Bit(55) "CurveFit prs.
Alarm, error, and system messages 10.
11 Technical data 11.
Technical data 11.1 Technical data Design, enclosure Design, enclosure Degree of protection IP65 in accordance with EN 60529 Dimensions For each unit (transmitter, receiver) Diameter: 165 mm Length 357 mm Purging tube Length: 340 mm Outer diameter: ∅ 48 mm Inner diameter: ∅ 44 mm Weight Receiver unit 6.0 kg Transmitter unit 5.2 kg Process interface – For DN50/PN 10-40 5.3 kg – For ANSI4"/150 lbs. approx.
Technical data 11.1 Technical data Influencing variables Influencing variables Variations in ambient temperature < 0.5 % of measuring range/10 K Process gas temperature With compensation: < 1 % of measuring range /100 K Variations in ambient pressure Negligible Process gas pressure With compensation: < 0.25 % of measured value/1000 hPa Variations in supply voltage Negligible Electric inputs and outputs Number of measurement channels 1 Analog outputs 2 outputs, 4 ...
Technical data 11.
Technical data 11.1 Technical data Measuring conditions Measuring conditions Measurement path 0.3 ... 8 m (other lengths: please contact Siemens AG) Process gas pressure, temperature Dust load O2: 900 ... 1 100 hPa (absolute), 0 ... 600 °C (32 ... 1 111 °F) - applies to MLFB code AB O2: 700 ... 5 000 hPa (absolute), 0 ... 200 °C (32 ... 392 °F) - applies to MLFB code AC CO: 700 ... 2 000 hPa (absolute), -20 ... 300 °C (56 ... 392 °F) ) - applies to MLFB code JC CO: 800 ...
Technical data 11.
Dimension drawings 12 Dimension drawings 12.1 Dimensional drawings SITRANS SL can be delivered with two different process flanges - suitable for flange connections DIN (DN50/PN10-40) or ANSI (ANSI 4"/150lb).
Dimension drawings 12.
77 (30 1/4”) 54 (21 1/4”) 59.2 (23 1/4”) Dimension drawings 12.1 Dimensional drawings 355.
ಯ ಯ Dimension drawings 12.
13 Spare parts and accessories 13.1 Spare parts Table 13- 1 General spare parts Spare parts Order No.
Spare parts and accessories 13.1 Spare parts Application-specific spare parts NOTICE The application-specific spare parts can be ordered by customers. The receiver and transmitter modules may only be replaced by certified personnel. Table 13- 2 192 Application-specific spare parts Spare parts for O2 measurement Order No.
Spare parts and accessories 13.2 Accessories 13.2 Accessories SITRANS SL sensor alignment kit The SITRANS SL sensor alignment kit includes a battery-operated lamp, a centering aid with crosshair, and two hook spanners for opening the optics tube of the sensors. WARNING The SITRANS SL sensor alignment kit is not Ex protected. Therefore it must never be used in a hazardous area without approval by the plant manager! Verification kit The SITRANS SL has already been factory-calibrated.
Spare parts and accessories 13.
A Appendix A.1 Gas flow calculations Gas flow calculations are slightly complex because gases are compressible fluids whose density changes with pressure. In this application we are dealing with choked flow. The outlet pressure is less than one half of the inlet pressure and the gas reaches sonic velocity in the valve. A further decrease in outlet pressure does not increase the flow.
Appendix A.2 ESD (ElectroStatic Discharge) A.2 ESD (ElectroStatic Discharge) ESD is the rapid, spontaneous transfer of electrostatic charge induced by a high electrostatic field. Electrostatic damage to electronic devices can occur at any point from manufacture to field service. Damage results from handling the devices in uncontrolled surroundings or when poor ESD control practices are used. Generally damage is classified as either a catastrophic failure or a latent defect.
Appendix A.2 ESD (ElectroStatic Discharge) Electrostatic charging Anyone who is not connected to the electric potential of their surroundings can be electrostatically charged. The following figure 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.
Appendix A.3 Verification Sheets Wrist Straps In many facilities, people are one of the prime generators of static electricity. Therefore, wrist straps must be used while carrying out maintenance and service on the laser analyzer, to keep the person wearing it connected to ground potential. A wrist strap consists of the cuff that goes around the person's wrist and the ground cord that connects the cuff to the common point ground.
Appendix A.
Appendix A.
Appendix A.4 Service and support A.4 Service and support Worldwide contact partners If you have any further questions relating to the products described in this documentation, contact your local representative at the Siemens office nearest you. You will find information on whom to contact at our contact partners website (http://www.siemens.com/automation/partner). Product information on the Internet The instructions are included on the CDs which are already supplied or may be ordered.
Appendix A.5 Returned deliveries A.5 Returned deliveries The analyzer or spare parts should be returned in the original packing material. If the original packing material is no longer available, wrap the analyzer in plastic foil and pack in a sufficiently large box lined with padding material (wood shavings or similar). When using wood shavings, the stuffing should be at least 15 cm thick on all sides.
Appendix A.5 Returned deliveries A.5.1 Returned deliveries form 5HWXUQHG GHOLYHULHV IRUP 5HSDLU *XDUDQWHH Name of customer Person responsible Delivery address Phone Fax Email Address for returned delivery (if different from above) Customer (original) order no. Device name Order (MLFB) no. Serial no.
Appendix A.5 Returned deliveries A.5.2 Decontamination declaration To protect our employees, equipment and environment, it must be guaranteed that the returned device is free of all residues of the measured media. For this reason we check if a complete decontamination declaration is present before unpacking the device. Please securely apply a clear plastic envelope with the completely filled-in and signed decontamination declaration including the shipping papers outside on the packaging.
B List of abbreviations Abbreviation / symbol Explanation ″ Inch - 1″ ≙ 25.4 mm < Less than > Greater than ≤ Less than or equal to ≥ Greater than or equal to ° Degrees °C Degrees celsius - 1°C ≙ 1.8 °F °F Degrees fahrenheit - 1°F ≙ 0.555...
List of abbreviations 206 Abbreviation / symbol Explanation l/min Liters per minute LAN Local Area Network LCD Liquid crystal display LD Laser diode LDS Laser Diode Spectrometer LDSComm Laser Diode Spectrometer Communication software LED Light emitting diode LUI Local User Interface max. Maximum mm Millimeter mm² Square millimeters MPa Megapascal MPI Message passing Interface MSB Most significant byte n. B.
List of abbreviations Abbreviation / symbol Explanation TCP/IP Transmission Control Protocol/Internet Protocol; a reference model for communication on the Internet THU Transmitter Housing Unit TTU Transmitter Tube Unit Tx Transmit (Tx) identifies a transmitter UL Underwriters Laboratories, a US certifying body V Volt Vol% Volume percent vpm Volume parts per million Δ Difference (Greek: delta) μC Microcontroller SITRANS SL Operating Instructions, 12/2010, A5E01132948-04 207
List of abbreviations 208 SITRANS SL Operating Instructions, 12/2010, A5E01132948-04
Glossary Analog Continuous representation of a variable, e.g. voltage, using a scale, in contrast to "Digital". ATEX ATEX stands for both the directives of the European Community for the field of explosion protection: the ATEX product directive 94/9/EC and the ATEX operation directive 1999/92/EC.
Glossary Div. 0 Area in which dangerous, potentially explosive gaseous atmospheres can form frequently, constantly or over long time periods during the normal operation of a device. Div 0 (US standard) corresponds to Zone 0 (European standard). Div. 1 Area in which dangerous, potentially explosive gaseous atmospheres are permanently present during the normal operation of a device. Div 1 (US standard) corresponds to Zone 0 and Zone 1 (European standard). Div.
Glossary FBD A Function Block Diagram is a graphic representation of control functions. Each control task (function) has a corresponding symbol. FM, Factory Mutual FM Global is a U.S.-based insurance company, with offices worldwide, that specializes in loss prevention services primarily to large corporations throughout the world in the Highly Protected Risk (HPR) property insurance market sector.
Glossary PC card Trademark of the Personal Computer Memory Card International Association (PCMCIA). Designation for auxiliary cards that conform with PCMCIA specifications. A PC card that has roughly the size of a credit card can be plugged into a PCMCIA slot. Version 1 specifies cards of Type I with a thickness of 3.3 millimeters, which are designed mainly for use as external memory.
Glossary STEP 7 STEP 7 is programming software for the S7-300 and S7-400 controller families STL Statement list -> User program in which control functions are listed in the form of statements. Termination The termination (lat. terminare for "end") used in telecommunications technology describes the completion of a signal path. The termination results in minimization of signal reflections which could otherwise lead to interferences. The termination is normally used at the physical end of a signal path.
Glossary 214 SITRANS SL Operating Instructions, 12/2010, A5E01132948-04
