Home

YOKOGAWA - Insatech

1. Table 5 15 Unit Index by XD_SCALE PV_FTIME SC Index Channel Sets the time constant of the damping function C 1001 2 within Al block primary delay in seconds F 1002 2 Q cm 1295 s Alarm Priority S cm 1594 1 3 Indicates the priority of the process alarm If a value 1342 4 of 3 or greater is set an alarm is transmitted The factory default is 0 L_TYPE Four types of alarm can be set Specifies the operation function of the Al block HI PRI HI HI PRI LO PRI and LO LO PRI If set to Direct the input delivered to CHANNEL is directly reflected on OUT If set to Indirect scaling Alarm Threshold by XD SCALE and OUT SCALE is carried out and Sets the threshold at which a process alarm is is reflected on OUT If set to Indirect SQRT after generated The factory default setting is a value that scaling by XD SCALE the square root is extracted does not generate an alarm and the value scaled by OUT SCALE is reflected on Four types of alarm can be set OUT HI LIM HI HI LIM LO LIM and LO LO LIM Example Channel range is defined as 0 to 100 C but F suda units is required for HOST display MI neue Set the following parameters figure 5 6 FIELD_VAL 100 UG 100 EU 0 Direct PV channel value XD_SCALE EU 0 0 C Indirect PV EU 0 AL EU 100 EU 0 EU 0 100 C 199 Unit C Ind Sqr Root PV EU 0 IDA EU 100 EU 0 Decimal point 2 OUT SCALE EU 0 32 F EU 0
2. ra 9 cm gt 3 cm heat shrink remove insulation Fig 3 13a 3 Remove loose copper screening and cut off the cotton packing threads as short as possible 4 Strip insulation from the last 3 cm of the brown and the white coaxial cores cotton threads Fig 3 13b 5 Extract the coaxial cores from the braid and trim off the black low noise screening material as short as possible 6 Insulate the overall screen and drain wire 14 and the 2 coaxial screens with suitable plastic tubing 7 Strip and terminate all ends with suitable crimp terminals and identify with numbers as shown Red 11 Fig 3 13c 8 Finally shrink the overall heat shrink tube into position IM 12D7B3 02E H 4 1 4 Operation Display Functions And Setting 4 1 Operator interface This section provides a survey of the operation of the EXA operator interface The basic procedures for obtaining access to the three levels of operation are described briefly For a step by step guide to data entry refer to the relevant section of this user s manual Figure 4 1 shows the EXA operator interface LEVEL 1 Maintenance These functions are accessible by pushbutton through a flexible front cover window The functions make up the normal day to day operations that an operator may be required to complete Adjustment of the display and routine calibration are among the features accessible i
3. Message display Key prompt flags Commissioning Selection keys C mode access key YES Accept setting NO Change setting gt A Measure M aintenance FI ES E E mode key EXASC202 YOKOGAWA 2 Choose digit to poses dad uncis ap E aft d cb cM RD J adjust Adjust digit Broken line indicates area ENT Confirm change that can be seen through front cover Figure 4 1 SC202 operator interface 4 2 Explanation of operating keys MODE key This key toggles between the measuring and maintenance modes Press once to obtain access to the maintenance function menu CALIB DISP 1 DISP 2 Only when second temp compensation enabled Press again to return to the measuring mode YES NO keys These are used to select choices from the menu YES is used to accept a menu selection NO is used to reject a selection or to move ahead to the next option DATA ENTRY keys P A ENT P is used as a cursor key Each press on this key moves the cursor or flashing digit one place to the right This is used to select the digit to be changed when entering numerical data A is used to change the value of a selected digit Each press on this key increases the value by one unit The value can not be decreased so in order to obtain a lower value increase past nine to zero then increase to the required number ENT When the required
4. meme 4 1 A 1 Operator interface e nee Einen ener uic e oe ER D ER Ee 4 1 4 2 Explanation of operating keys ie 4 2 4 3 Setting passcodes eie core te e ib Rer e e a e E ee te epus 4 3 4 3 1 Passcode protection ie 4 3 4 4 Display examples dee epit cc ne d p e ec pe Cor e S es 4 3 4 5 Display fUNCHONS iude tinte ren Lee Ecce He a EE ek rdg ee atn 4 4 5 PARAMETER SETTING eene eene eene enne enne nnns 5 1 5 1 Maintenance mode a ye oue cpm ad 5 1 5zI l Introduction erre ee qe dti pate tee n een 5 1 5 2 COMMISSIONING MODE o eee ree y e Tei ERR dd ne ten e e ete aia ed Pe prece al 5 2 5 2 1 Introduction saran refte epe ete e P i Ld Pe dd 5 2 5 2 2 Temperature compensation eene enne nennen nnn enne enne 5 2 3 Temperature compensation selection ii 522 4 Service code le bee dee be a recta 5 3 Service C odes seite eese ponen m De Rr peek cha DRE CERE REX PEERS an 5 11 5 3 1 Parameter specific functions i 5 12 5 3 2 Temperature measuring functions 5 14 5 4 Temperature compensation functions i 5 16 5 5 mA Output functions tette re pi pret Pt tend dei en 5 18 5 6 User interface n pano cc e qe d a p e daniela 5s EogbOok Setup iicet ito pm atin P tee tbe ed te in 5 9 General E nai eite e e cds 6 CALIBRATION ocio 6 1 6 1 When is calibration necessary eee mener enne 6 1 6 2 Calibration procedure mic e
5. u User s Model SC202G F Ex Manual Conductivity and Resistivity Transmitter CE IM 12D7B3 02E H A 1st Edition IM 12D7B3 02E H TABLE OF CONTENTS PREFACE CONFIGURATION CHECKLIST FOR SC202 1 INTRODUCTION AND GENERAL DESCRIPTION seem 1 1 1 1 Instrument Check rint e eee d e en B Ee Ph ph ere rd 1 1 1 2 Ap pliG ation sive iecore Re ence e oe abe e coe Seat eds 1 2 2 GENERAL SPECIFICATIONS eti a eda iat e e t b Hes 2 1 2 1 Specifications nee en eret een 2 1 2 2 Operating specifications unen re oec p e D e e 2 2 2 3 Model and SU COS vicios cei en en e Eg dimen aaa 2 2 3 INSTALLATION AND WIRING memes 3 1 3 1 Installation and dimerisions eter te rre pe tee Ere tope eene ere onde 3 1 3 1 1 Installation Sites 10 4 icto eet ite etc tiia ere e Pee ep edes 3 1 3 1 2 Mounting methods 1 2 ene a e RR TELA Ben e 3 1 3 2 Preparation eet erem edet ecd eet este pe a EE e DRE E uU SPEI nas 3 3 3 2 1 Cables terminals and glands ees 3 3 3 3 Wirinig OT SENSOrS a irren ee vas e Pie patate idee oa 3 4 3 3 1 General precautions u seen erben 3 4 3 4 Sensor 1 erp rers pe P n ETE Pe re Edi n beet dete 3 5 Other sensor Systems cenit EON ulcer bote t Cie m Cet P edP the iet ha 3 6 Sensor connection using junction box and extension cable ssesee 4 OPERATION DISPLAY FUNCTIONS AND SETTING
6. 6 1 6 Calibration 6 1 When is calibration necessary Calibration of conductivity resistivity instruments is normally not required since Yokogawa delivers a wide range of sensors which are factory calibrated traceable to OIML standards The cell constant values are normally indicated on the top of the sensor or on the integral cable These values can be entered directly in service code 03 section 5 3 1 If the cell has been subjected to abrasion erosion or coating calibration may be necessary In the next section two examples are given Alternatively calibration may be carried out with a simulator to check the electronics only note During calibration the temperature compensation is still active This means that the readings are referred to the reference temperature as chosen in service code 20 section 5 3 4 default 25 C Calibration is normally carried out by measuring a solution with a known conductivity value at a known temperature The measured value is adjusted in the calibration mode On the next pages the handling sequence for this action is visualized Calibration solutions can be made up in a laboratory An amount of salt is dissolved in water to give a precise concentration with the temperature stabilized to the adjusted reference temperature of the instrument default 25 C The conductivity of the solution is taken from literature tables or the table on this page Alternatively the instrument may be calibrated in an un
7. H U ISCT IQ Hood for Sun Protection Pipe amp Wall mounting hardware Stainless steel tagplate Calibration certificate Turck Fieldbus connector The SC202 Device Description is available enabling communications 3 1 3 Installation And Wiring 3 1 Installation and dimensions 3 1 1 Installation site The EXA converter is weatherproof and can be installed inside or outside It should however be installed as close as possible to the sensor to avoid long cable runs between sensor and converter In any case the cable length should not exceed 30 mtr 100 feet Select an installation site where Mechanical vibrations and shocks are negligible No relay power switches are in the direct environment Access is possible to the cable glands see figure 3 1 The transmitter is not mounted in direct sunlight or severe weather conditions Maintenance procedures are possible avoiding corrosive environments The ambient temperature and humidity of the installation environment must be within the limits of the instrument specifications See chapter 2 3 1 2 Mounting methods Refer to figures 3 2 and 3 3 Note that the EXA converter has universal mounting capabilities Panel mounting using two 2 self tapping screws Surface mounting on a plate using bolts from the back Wall mounting on a bracket for example on a solid wall Pipe mounting using a bracket on a horizontal or vertical pipe maxim
8. Time duration of the shortest cycle interval of which the resource is capable 22 1022 MEMORY SIZE 0 Available configuration memory in the empty resource To be checked before attempting a download 23 1023 NV CYCLE T 0 Interval between writing copies of NV parameters to non volatile memory Zero means never 24 1024 FREE SPACE 0 Percent of memory available for further configuration EXA has zero which means a preconfigured resource 25 1025 FREE TIME 0 Percent of the block processing time that is free to process additional blocks EXA does not support this 26 1026 SHED RCAS 640000 2S AUTO Time duration at which to give up on computer writes to function block RCas locations Supported only with PID function 27 1027 SHED_ROUT 640000 2S AUTO Time duration at which to give up on computer writes to function block ROut locations Supported only with PID function 28 1028 FAULT_STATE 1 Condition set by loss of communication to an output block failure promoted to an output block or a physical contact When fail safe condition is set Then output function blocks will perform their FSAFE actions 29 1029 SET_FSTATE 1 AUTO Allows the fail safe condition to be manually initiated by selecting Set 30 1030 CLR_FSTATE 1 AUTO Writing a Clear to this parameter will clear the device fail safe state if the field condition if any has cleared 31 1031 MAX NOTIFY 3 Maximum number of unconfirmed notify messages possible 3
9. 22 ALARM SUM 8 8 23 ACK OPTION 2 24 ALARM HYS 4 25 HI HI PRI 1 26 HI HI LIM 4 27 HI PRI 1 28 HI LIM 4 29 LO PRI 1 30 LO LIM 4 31 LO LO PRI 1 32 LO LO LIM 4 33 HI HI ALM 34 HI ALM 35 LO ALM 36 LO LO ALM TOTALS BYTES 31 26 31 46 Table 5 14 Indexes of View for Each Block VIEW 1 VIEW 2 VIEW 3 VIEW 4 Resourse Block 40100 40101 40102 40103 Transducer Block 40200 40201 40202 40203 All Function Block 40400 40401 40402 40403 Al2 Function Block 40410 40411 40412 40413 AI3 Function Block 40420 40421 40422 140423 5 9 5 6 4 Function Block Parameters Function block parameters can be read from the host or can be set For a list of the parameters of blocks held by the EXA refer to List of parameters for each block of the EXA in Appendix 1 The following is a list of important parameters with a guide how to set them MODE BLK This mode parameter is very important as it gives the state of the block In O S Out Of Service mode the block is out of operation In this mode it is allowed to update parameters Manual mode gives the operator the possibility to manually update a selected number of parameters values scaling e g in order to test the system In automatic mode the function block is executed and block para meters are automatically updated Under normal operating circumstances set the Auto mode for normal operation Auto mode is the factory default Note The actual
10. TEST 11 2057 TEST 12 2058 TEST 13 IM 12D7B3 02E H 9 1 APPENDIX 2 APPLICATION SETTING AND CHANGE OF BASIC PARAMETERS A2 1 Applications and Selection of Basic Parameters Setting Item applicable parameters Summary Tag No Sets PD Tag and each block tag Up to 32 alphanumeric characters can be set for both tags Refer to Tag and address in Section 5 4 Calibration range setup XD_SCALE Sets the range of input from the transducer block corresponding to the 0 and 100 points in operation within the All function block The calibrated range 0 and 100 is the factory default setting Sets the range unit number of decimals required Output scale setup OUT_SCALE Sets the scale of output corresponding to the 0 and 100 points in operation within the All function block It is possible to set a unit and scale that differs from the calibration range Sets the range unit and the number of decimals required Scale range and unit of built in indicator setup OUT_SCALE The range determined with the output scale becomes the scale and unit of the built in indicator Note If a built in indicator is available the lower bound and the upper bound of the range numeric string excluding the decimal point if it is included may be set in a range from 19999 to 19999 Down to the third decimal position can be set Output mode setup L_TYPE Selects the operation function of the
11. Table 5 12 View Object for Transducer Block IM 12D7B3 02E H Relative Parameter Mnemonic VIEW VIEW VIEW VIEW Realtive Parameters View View View View Index 1 2 3 4 Index Mnemonic 1 2 3 4 ata L SIE REY zero und 1 st rev 2 2 2 2 2 TAG DESC 2 tag desc 32 3 STRATEGY 2 3 strategy 2 4 ALERT KEY 1 alet key 7 1 mode 5 MODE BLK 4 4 6 block err 2 2 6 BLOCK ERR 2 2 7 update evt 7 RS STATE 1 8 block alm 8 TEST RW 9 transducer directory 2 10 transducer type 2 2 2 2 9 DD RESOURCE 11 xd error 1 1 10 MANUFAC ID 4 12 collection directory 7 11 DEV TYPE 2 13 primary value type 2 12 DEV REV 1 n primary vale 5 5 primary value range 13 DD BEY 1 16 sensor const 4 15 HARD TYPES 2 18 cal point lo 4 16 RESTART 2 cal min span a 1 sensor cal metho Di FEATURES 2 21 sensor Cal date 8 18 FEATURE SEL 2 22 secondary value 5 5 19 CYCLE TYPE 2 23 secondary value unit 2 20 CYCLE SEL 2 24 sensor temp comp 1 25 sensor temp man value 21 MIN CYCLE T ad 26 sensor type temp 2 22 MEMORY SIZE 2 27 sensor connection temp 1 23 NV CYCLE T 4 28 sensor type cond 2 24 FREE SPACE 4 29 sensor ohms 30 xd man id 32
12. 25 FREETIME a 4 31 temperature coeff 4 26 SHED RCAS 4 32 concentration 5 5 27 SHED ROUT 4 33 tertiary value 5 5 28 FAULT STATE 1 1 reference temperature 1 comp metho 29 SET FSTATE 36 comp matrix sel 1 30 CLR_FSTATE 37 tertiary comp method 1 31 MAX NOTIFY 1 38 tert temperature coeff 4 32 LIM NOTIFY 1 alarm cum 2 A ev_alarm 33 CONFIRM_TIME 4 41 logbook1 reset 34 WRITE LOCK 1 42 logbook1_event 35 UPDATE EVT 43 logbook2 reset 36 BLOCK ALM 44 logbook2 event 45 logbook config 16 16 37 ALARM SUM 8 8 46 test 1 38 ACK OPTION 2 2 58 test 13 39 WRITE PRI TOTALS BYTES 43 17 43 72 40 WRITE ALM 41 ITK VER 2 42 SOFT REV 43 SOFT DESC 44 SIM ENABLE MSG 45 DEVICE STATUS 1 4 46 DEVICE STATUS 2 4 47 DEVICE STATUS 3 4 48 DEVICE STATUS 4 4 49 DEVICE STATUS 5 4 50 DEVICE STATUS 6 4 51 DEVICE STATUS 7 4 52 DEVICE STATUS 8 4 TOTALS 4 BYTES 22 30 54 31 Table 5 13 View Object for AIL AI2 AI3 Function Block Relative Parameter Mnemonic VIEW VIEW VIEW VIEW Index 1 2 3 4 1 ST REV 2 2 2 2 2 TAG DESC 3 STRATEGY 2 4 ALERT KEY 1 5 MODE BLK 4 4 6 BLOCK ERR 2 2 7 PV 5 5 8 OUT 5 5 9 SIMULATE 10 XD SCALE 11 11 OUT SCALE 11 12 GRANT DENY 2 13 IO OPTS 2 14 STATUS OPTS 2 15 CHANNEL 2 16 L TYPE 1 17 LOW CUT 4 18 PV FTIME 4 19 FIELD VAL 5 5 20 UPDATE EVT 21 BLOCK ALM
13. 9 Lithium cell battery K1543A 10 Eeprom with latest SC 202G software K1544BJ Options T Turck connector K1544FN JU Pipe and wall mounting hardware K1142KW PM Panel mounting hardware K1141KR ISCT Stainless steel tag plate K1143ST Fig 10 1 Exploded view IM 12D7B3 02E H 10 2 IM 12D7B3 02E H 11 Appendix 11 1 11 1 User setting for non linear output table code 31and 35 Concentration table out put 11 2 User entered matrix data code 23 to 28 Medium T1 data T2 data T3 data T4 data T5 data Code 23 Temperature T1 T5 Code 24 Solution 1 L1 Code 25 Solution 2 L2 Code 26 Solution 3 L3 Code 27 Solution 4 L4 Code 28 Solution 5 L5 Medium T1 data T2 data T3 data T4 data T5 data Code 23 Temperature T1 T5 Code 24 Solution 1 L1 Code 25 Solution 2 L2 Code 26 Solution 3 L3 Code 27 Solution 4 L4 Code 28 Solution 5 L5 IM 12D7B3 02E H 11 2 11 3 Matrix data table user selectable in code 22 Matrix Solution Temp C Data 1 Data 2 Data 3 Data 4 Data 5 HCL p cation 0 ppb 4 ppb 10 ppb 20 ppb 100ppb selection 1 0 0 0116 uS 0 0228 uS 0 0472 uS 0 0911uS 0 450 uS 10 0 0230 uS 0 0352 uS 0 0631 uS 0 116 uS 0 565 uS 20 0 0419 uS 0 0550 uS 0 0844 uS 0 145 uS 0 677 uS 30 0 0710 uS 0 085 uS 0 115 pS 0 179 uS 0 787 uS 40 0 1135 uS 0 129 uS 0 159 uS 0 225 uS 0 89
14. CONFIGURATION donne buia Ih 5 1 5 1 Network design E moa e Har ia cea ese em Rr eue beer HER SEE 5 1 5 25 Network definitlOh eerie rte ein reete et ee iet euer E Pere hein lhi 5 1 5 3 Definition of combining function blocks emnes 5 3 5 4 Setting of tags and addresses 5 4 525 Communication Setting 3h eet ce etta ias 5 4 5 5 17 VER SEN 2 rere rhe ee ait Deb e Db dle Reg baie aes 5 4 5 5 2 Function block execution control emen 5 6 5 6 Bl ck Setting art i e HEY C lc eate ir i tp arte Bede eve du 5 6 52621 Link object 2 2 EIER ata eh tee sede 5 6 5 6 2 Trend object sun irreali piedi bth ali 5 7 5 69 View object ioa eet Hee e ail 5 7 5 6 4 Function block parametersS ii 5 9 6 IN PROCESS OPERATION tra ee 6 1 0 1 Mode trans MO omita nilo na elia 6 1 6 2 Generation alain A A eed endet 6 1 6 2 1 Indication AA ds a 6 1 0 2 2 Alarms ad eV iia e em e ot Babes 6 1 6 3 Simulatiori friction itr eis ii Lee Va 6 2 7 DEVICE STATUS ege oe oh ia pe ities 7 1 APPENDIX 1 LIST OF PARAMETERS FOR EACH BLOCK OF THE EXA 8 1 A I 1 Resource block oet e dete eine 8 1 A 1 2 Al bIOCK oreet gear ir RR E RET 8 3 A 1 3 Transducer DIOCK itr ette ee a 8 4 APPENDIX 2 APPLICATION SETTING AND CHANGE OF BASIC PARAMETERS 9 1 A 2 1 Applications and selection of basic parameters eme 9 1 A 2 2 Setting and change of ba
15. Service Data unit Size DLSDU Set 256 for Server and Trend VCR and 64 for other VCRs FasDIlResidual ActivitySupported Specifies whether connection is monitored Set TRUE 0xff for Server This parameter is not used for other communication FasDllTimelinessC lass Not used IM 12D7B3 02E H Sub Parameter Description 5 6 Block Setting index 10 FasDIlPublisherTime Not used Set the parameter for function block VFD WindowSize 11 FasDIIP ublisher Not used 5 6 1 Link Object SynchronizaingDlcep 12 FasDIlSubsriberTime Not used Link object combines the data voluntarily sent by WindowSize the function block with VCR The EXA has 6 link 13 FasDIlSubscriber Not used objects A single link object specifies one combi SynchronizationDicep nation Each link object has the parameters listed in 14 FmsVfdld Sets VFD for EXA to be Table 5 6 Parameters must be changed together used for each VCR because the modifications made to each parameter may cause inconsistent operation 0x1 System network management VFD Table 5 6 Link Object Parameters 0x1234 Function block VFD Sub Parameters Description index 15 FmsMaxOutstanding Set 0 to Server It is not 1 Locallndex Sets the index of function ServiceCalling used for other applications block parameters to be 16 FmsMaxOutstanding Set 1 to Server I
16. 0 31 mS 61 mS 86 mS 105 mS 127 mS 25 53 mS 101 mS 145 mS 185 mS 223 mS 50 76 mS 141 mS 207 mS 268 mS 319 mS 75 97 5 mS 182 mS 264 mS 339 mS 408 mS 100 119 mS 223 mS 318 mS 410 mS 495 mS IM 12D7B3 02E H 11 3 11 4 Sensor Selection 11 4 1 General The inputs of the EXA transmitter are freely programmable for ease of installation Standard 2 electrode type sensors with a cell constant of 0 100 cm and a Pt1000 temperature sensor need no special programming The EXA indicates a fault with a signal in the display field if there is a mismatch of sensors in the connection 11 4 2 Sensor selection The EXA SC202 is pre programmed to accept standard 2 electrode sensors with a Pt1000 temperature sensor The EXA is universally compatible with all 2 and 4 electrode type of sensors with a cell constant within the range of 0 008 cm to 50 0 cm 11 4 3 Selecting a temperature sensor The EXA SC202 reaches its highest accuracy when used with a Pt1000 temperature sensor This may influence the choice of the conductivity resistivity sensor as in most cases the temperature sensor is integrated in the conductivity resistivity sensor 11 5 Setup for other functions Diagnostic checks Polarization check and checks on the calibrated cell constant and the adjusted Temperature Coefficient are included in the EXA SC202 Logbook In combination with the communications link a logbook is available to keep an electronic record of events such as
17. 10096 coverage If 9 is selected the temperature compensation range for the adjustable matrix must be configured in code 23 Next the specific conductivity values at the different temperatures must be entered in codes 24 to 28 Code23 T1 T2 T3 Setthe matrix compensation range It is not necessary to enter equal T4 amp T5 C temperature steps but the values should increase from T1 to T5 otherwise the entrance will be refused Example 0 10 30 60 and 100 C are valid values for the T1 T5 The minimum span for the range T5 T1 is 25 C Code 24 28 L1xT1 In these access codes the specific conductivity values can be entered for L5xT5 5 different concentrations of the process liquid each one in one specific access code 24 to 28 The table below shows a matrix entering example for 1 1596 NaOH solution for a temperature range from 0 100 C notes 1 In chapter 11 a table is included to record your programmed values It will make programming easy for duplicate systems or in case of data loss 2 Each matrix column has to increase in conductivity value 3 Error code E4 occurs when two standard solutions have identical conductivity values at the same temperature within the temperature range Table 5 2 Example of user adjustable matrix Matrix Example Example Example Example Example Code 23 Temperature T1 T5 0 C 25 C 50 C 75 C 100 C Code 24 Solution 1 1 L1 31 mS cm 53 mS cm 76 mS cm 98 mS cm 119 mS cm
18. 4 5 5 2 Commissioning mode 5 2 1 Introduction In order to obtain peak performance from the EXA SC202 you must set it up for each custom application Temp1 2 First and second temperature compensation methods and values see also section 5 2 4 NaCl is the default compensation and is used for neutral salt solutions Strong salt solutions and ultra pure water application TC temperature coefficient compensation uses a linear temperature compensation factor This can be set by calibration or configuration Matrix compensation is an extremely effective way of compensation Choose from standard matrix tables or configure your own to exactly suit your process Service This selection provides access to the service menu What follows are pictorial descriptions of typical frontplate pushbutton sequences for each parameter setting By following the simple YES NO prompts and arrow keys one can navigate through the service functions 5 2 2 Temperature compensation 1 Why temperature compensation The conductivity of a solution is very dependent on temperature Typically for every 1 C change in temperature the solution conductivity will change by approximately 2 96 The effect of temperature varies from one solution to another and is determined by several factors like solution composition concentration and temperature A coefficient a is introduced to express the amount of temperature influence in percent change in conductivity C
19. Hi Alarm Hi Alarm Low Alarm Low Low Alarm Discrets Alerts Generated when an abnormal condition is detected By Resource Block Block Alarm Write Alarm By Transducer Block Block Alarm By All Block Block Alarm By Al2 Block Block Alarm By AI3 Block Block Alarm 6 1 Update Alerts Generated when a important restorable parameter is updated By Resource Block Update Event By Transducer Block Update Event By All Block Update Event By Al2 Block Update Event By AI3 Block Update Event An alert has following structure Table 6 2 Alert Object Subindex Parameter Lj vot P Name Explanation 238433 1 1 1 Block Index Index of block from which alert is generated 2 2 2 Alert Key Alert Key copied from the block 3 3 3 Standard Type of the alert Type 4 4 4 Mfr Type Alert Name identified by manufacturer specific DD 5 5 5 Message Reason of alert notification Type 6 6 6 Priority Priority of the alarm 7 7 7 Time Stamp Time when this alert is first detected 8 8 Subcode Enumerated cause of this alert 9 9 Value Value of referenced data 10 10 Relative Relative index of referenced Index data 8 Static Value of static revision Revision ST_REV of the block 11 11 9 Unit Index Unit code of referenced data IM 12D7B3 02E H 6 2 6 3 Simulation Function The simulation function simulates the input of a function block and lets it operate as if the data was received from
20. MQ 55 0 96 0 Off 100 100 0 56 DISP 0 Auto ranging SC 2 xx xxM Q cm RES 57 USP 0 off IM 12D7B3 02E H 11 6 Conductivity too high Code Error description Possible cause Suggested remedy El Polarization detected on cell Sensor surface fouled Clean sensor Replace sensor E2 Temperature coefficient out of limits 0 3 596 9C Incorrect field calibration of TC Re adjust Set calculated TC E3 Calibration out of limits Calibrated value differs more than 20 of nominal value programmed in code 03 Check for correct sensor Check for correct unit uS cm mS cm kQ cm or MQ cm Repeat calibration E4 Matrix compensation error Wrong data entered in 5x5 matrix Re program E5 Conductivity too high or resistivity too low Limits set in service code 54 Incorrect wiring Internal leakage of sensor Defective cable Check wiring 3 6 Replace sensor Replace cable E6 Conductivity too low or resistivity too high Limits set in service code 54 Dry sensor Incorrect wiring Defective cable Immerse sensor Check wiring 3 6 Replace cable E7 Temperature sensor open Pt1000 T gt 250 C or 500 F Pt100 Ni100 T gt 200 C or 400 F 8k55 T lt 10 C or 10 F PB36 T 20 C or 0 F Process temperature too high or too low Wrong sensor programmed Incorrect wiring Check process Check model code sensor Check connection
21. display An example is shown below for details see the Users manual Unique Number F70 00 ji 4 Line Number ATE automatic test equipment no Month code Year code 2 General Inspection Final testing begins with a visual inspection of the unit to ensure that all the relevant parts are present and correctly fitted 3 Safety Test The minus and the external ground terminal of the housing are connected to a Voltage generator 100 VDC The measured impedance value should be over 9 5 MW Terminal 14 and the external ground terminal of the housing are connected to a Voltage generator 500 VAC RMS for 1 minute The leakage current should remain below 12 mA 4 1 Accuracy Testing Our automated testing facility checks the resistivity input accuracy of the instrument using a calibrated ISC40 sensor and a variable resistor decade resistor box IM 12D7B3 02E H 12 2 4 1 1 Accuracy Testing of all supported temperature elements Our automated testing facility checks the input accuracy of the instrument using a calibrated variable resistor decade resistor box to simulate the resistance of all temperature elements Overall Accuracy Test This test can be performed by the end user to check the overall accuracy of the instrument The data specified on the Test certificate are results of the overall accuracy test performed during production and can be reproduced by performing similar tests with the following test equipment 1 A variable res
22. e ete eei ete de eet et sinn 11 3 11 6 User setting table nnn he eet er eei te a per a p eth pore aa 11 4 11 7 EM r c0d amp s 4 22 24 2 el Rhe aid 11 5 11 8 Device Description DD menu structure nennen 11 7 11 9 Field Change Order en Li ini 11 8 12 TEST CERTIFICATE eS DR ce ES RE A ERR E LU EE P ERREUR 12 1 LINO UC Na Hp ene oe a ia 12 1 2 General Inspection ebrei Ep rn c DR EA HR ede tede bee teenies 12 1 3 Safety test inest o prece ee ete e pet e po Pb ete t t d TE Eee ee 12 1 4 1 Accuracy testing eh iae e erp bte dote ene aa 12 1 4 1 1 Accuracy testing of all supported temperature elements nennen 12 2 4 2 Accuracy test MA output Cil CUIb ie iet ten te e ila 12 2 IM 12D7B3 02E H PREFACE Electric discharge The EXA analyzer contains devices that can be damaged by electrostatic discharge When servicing this equipment please observe proper procedures to prevent such damage Replacement components should be shipped in conductive packaging Repair work should be done at grounded workstations using grounded soldering irons and wrist straps to avoid electrostatic discharge Installation and wiring The EXA analyzer should only be used with equipment that meets the relevant international and regional standards Yokogawa accepts no responsibility for the misuse of this unit CAUTION The instrument is packed carefully with shock absorbing materials nevertheless the in
23. error messages calibrations and programmed data changes By reference to this log users can for instance easily determine maintenance or replacement schedules note On the pages 11 4 amp 11 5 a reference list for the configuration of the SC202 is shown IM 12D7B3 02E H 11 4 11 6 User setting table FUNCTION SETTING DEFAULTS USER SETTINGS Parameter specific functions 01 SC RES 0 SC 02 4 Elec 0 2 Elec 03 0 10xC 0 10xC Factor 1 000 cm 04 AIR 05 POL C K 1 On Temperature measuring functions 10 T SENS 0 Pt1000 11 T UNIT 0 C 12 T ADJ None Temperature compensation functions 20 T R C 25 C 21 T C 1 2 1 C T C 2 2 1 C 22 MATRX None see 5 2 5 23 T1 C T range See sep table 11 2 24 L1xT1 Cond Cl See sep table 11 2 25 L2xT1 Cond C2 See sep table 11 2 26 L3xT1 Cond C3 See sep table 11 2 27 L4xT1 Cond C4 See sep table 11 2 28 L5xT1 Cond C5 See sep table 11 2 Concentration table 35 TABL1 21 pt table see code 31 11 1 IM 12D7B3 02E H 11 7 Error codes 11 5 FUNCTION SETTING DEFAULTS USER SETTINGS User Interface 50 RET 1 on 52 PASS 0 0 0 all off 53 Err 01 1 hard fail Err 05 1 hard fail Err 06 1 hard fail Err 07 1 hard fail Err 08 1 hard fail Err 13 0 soft fail 54 E5 LIM 250 mS 0 004 kQ E6 LIM 1 000 uS 1 0
24. make a selection out of 4 predefined matrices and Ammonia one user definable matrix 0 80 C Morpholine 0 80 C HCI 0 5 0 60 C NaOH 0 5 0 100 C User defined 2037 TERTIARY_COMP None None NaCl TC matrix Method of process temperature compensation METHOD for the second conductivity value 2038 TERT_TEMPERATURE 2 1 Process temperature compensation factor for the _COEFF second conductivity value IM 12D7B3 02E H 8 6 Index PARAMETERS NAME Default Valid Range Description 2039 ALARM_SUM 2040 DEV ALARM Device Alarm is used to give the status of the analyser See separate table for error messages 2041 LOGBOOK1 RESET Idle Idle Reset Reset the pointer to the first oldest event in logbook 1 2042 LOGBOOK1 EVENT Event whereto the pointer is referenced When parameter is read the pointer is increased by one 2043 LOGBOOK2 RESET Idle Idle Reset Reset the pointer to the first oldest event in logbook 2 2044 LOGBOOK2_EVENT Event whereto the pointer is referenced When parameter is read the pointer is increased by one 2045 LOGBOOK CONFIG 16 Per event one can decide whether it should be logged and it which logbook 1 or 2 it should be logged 2046 TEST 1 2047 TEST 2 2048 TEST 3 2049 TEST 4 2050 TEST 5 2051 TEST 6 2052 TEST 7 2053 TEST 8 2054 TEST 9 2055 TEST 10 2056
25. of the relevant sales organization for repair or replacement at Yokogawa discretion The following information must be included in the letter accompanying the returned goods Part number model code and serial number Original purchase order and date Length of time in service and a description of the process Description of the fault and the circumstances of failure Process environmental conditions that may be related to the installation failure of the device A statement whether warranty or non warranty service is requested Complete shipping and billing instructions for return of material plus the name and phone number of a contact person who can be reached for further information e e e e oc o Returned goods that have been in contact with process fluids must be decontaminated disinfected before shipment Goods should carry a certificate to this effect for the health and safety of our employees Material safety data sheets should also be included for all components of the processes to which the equipment has been exposed IM 12D7B3 02E H CONFIGURATION CHECKLIST FOR SC 202 Primary choices default alternatives reference on page menu Measurement Conductivity Resistivity 5 8 5 9 SC 01 Temperature unit Celsius Fahrenheit 5 10 5 11 sc 11 Sensor Cell constant 0 1 cm any value between 0 08 and 50 5 8 5 9 6 1 6 3 SC 03 Sensor type 2 electrode 4 electrode 5 8 5 9 SC 02 Temperature compensator Pt1000 Ni100 Pt1
26. of error codes with possible causes and remedies 8 1 Diagnostics 8 1 1 Off line checks The EXA SC202 transmitter incorporates a diagnostic check of the adjusted cell constant value at calibration If the adjusted value stays within 80 120 of the nominal value set in service code 03 it is accepted Otherwise the unit generates an error E3 With a FF communication package it is possible to scroll the calibration data in a logbook function The EXA also checks the temperature compensation factor while performing manual temperature compensation as described in section 5 2 5 If the TC factor stays within 0 00 to 3 50 per C it is accepted Otherwise E2 will be displayed 8 1 2 On line checks The EXA performs several on line checks to optimize the measurement and to indicate a fault due to the fouling or polarization of the connected sensor The fault will be indicated by the activation of the FAIL flag in the display During measurement the EXA adjusts the measuring frequency to give the best conditions for the actual value being measured At low conductivity there is a risk of error due to the capacitive effects of the cable and the cell These are reduced by using a low measuring frequency At high conductivity the capacitive effects become negligible and errors are more likely to be caused by polarization or fouling of the cell These errors are decreased by increasing the measuring frequency At all values the EXA checks the
27. specification for all devices For EXA the setting must be a value of 12 or greater V MRD 5 3 Definition of Combining Function Blocks The input output parameters for function blocks are combined For the EXA three Al blocks output parameter OUT and PID block are subject to combination They are combined with the input of the control block as necessary Practically setting is written to the EXA link object with reference to Block setting in Section 5 6 for details It is also possible to read values from the host at proper intervals instead of connecting the EXA block output to other blocks The combined blocks need to be executed synchronously with other blocks on the communications schedule In this case change the EXA schedule according to the following table Enclosed values in the table are factory settings Table 5 3 Execution Schedule of the EXA Function Blocks Index Parameters Setting Enclosed is factory setting 269 MACROCYCLE_ Cycle MACROCYCLE SM DURATION period of control or measurement Unit is 1 32 ms 32000 1 s 276 FB START ENTRY 1 All block startup time SM Elapsed time from the start of MACROCYCLE specified in 1 32 ms 0 0 s 271 FB START ENTRY 2 AI2 block startup time SM Elapsed time from the start of MACROCYCLE specified in 1 32 ms 10666 0 33 s 278 FB START ENTRY 3 AI3 block startup time SM Elapsed time from the start of M
28. table for concentration 35 TABLE 0 5 1096 9596 100 Output table for concentration Linearization table for concentration in 5 steps The measured value is set in the main display using the gt ENT keys for each of the 5 interval steps Where a value is not known that value may be skipped and a linear interpolation will take place IM 12D7B3 02E H 5 14 5 6 User interface Code 50 Code 52 Code 53 Code 54 Code 55 Code 56 Code 57 RET PASS Err01 E5 LIM amp E6 LIM DISP USP 5 7 Logbook setup Code 62 ERASE 5 8 General Code 70 LOAD IM 12D7B3 02E H When Auto return is enabled the converter returns to the measuring mode from anywhere in the configuration menus when no button is pressed during the set time interval of 10 minutes Passcodes can be set on any or all of the access levels to restrict access to the instrument configuration Error message configuration Two different types of failure mode can be set Hard fail gives a steady FAIL flag in the display Soft fail gives a flashing FAIL flag in the display A good example is the dry sensor for a soft fail Limits can be set for shorted and open measurement Dependent on the main parameter chosen in code 01 the EXA will ask for a resistivity or conductivity value to be set value to be set is the uncompensated conductivity resistivity va
29. the host of any detected faults or other problems 2 Transducer block Converts sensor output to process values and transfers to Al function block by channels 3 AI1 AI2 AI3 function block Conditions raw data from the Transducer block Outputs conditioned process values Carries out scaling damping and square root extraction 3 1 3 3 LOGICAL STRUCTURE OF EACH BLOCK System network management VFD PD Tag Communication parameters Node address Function block execution schedule Function block VFD ri Al function Al function Transducer Al function block block 5 Sensor 2 input Block tag Block tag D Parameters Parameters Output oU Resource block Block tag Parameters Figure 3 1 Logical Structure of Each Block Setting of various parameters node addresses and PD Tags shown in Figure 3 1 is required before starting operation 3 4 Wiring System Configuration The number of devices that can be connected to a single bus and the cable length vary depending on system design When constructing systems both the basic and overall design must be carefully considered to allow device performance to be fully exhibited IM 12D7B3 02E H 3 2 IM 12D7B3 02E H 4 GETTING STARTED Fieldbus is fully dependent upon digital communica tion protocol and differs in operation from conven tional 4 to 20 mA transm
30. the transducer block It is possible to conduct testing for the downstream function blocks or alarm processes A SIMULATE_ENABLE switch is mounted on the FF PCB assembly This is to prevent the accidental operation of this function When this is switched on simulation is enabled See Figure 6 2 To initiate the same action from a remote terminal if REMOTE LOOP TEST SWITCH is written to the SIM_ENABLE_MSG parameter index 1044 of the resource block the resulting action is the same as is taken when the above switch is on Note that this parameter value is lost when the power is turned OFF In simulation enabled status an alarm is generated from the resource block and other device alarms will be masked for this reason the simulation must be disabled immediately after using this function The SIMULATE parameter of Al block consists of the elements listed in Table 6 3 below Table 6 3 SIMULATE Parameter Sub index Parameters Description 1 Simulate Status Sets the data status to be simulated 2 Simulate Value Sets the value of the data to be simulated 3 Transducer Displays the data status Status from the transducer block It cannot be changed 4 Transducer Displays the data value Value from the transducer block It cannot be changed 5 Simulate Controls the simulation En Disable function of this block 1 Simulation disabled standard 2 Simulation started When Simulate En Disable in Tabl
31. value has been set using the P land A keys press ENT to confirm the data entry Please note that the EXA does not register any change of data until the ENT key is pressed key This is the commissioning mode key It is used to obtain access to the commissioning menu This can only be done with the cover removed or opened Once this button has been used to initiate the commissioning menu follow the prompts and use the other keys as described above IM 12D7B3 02E H 4 3 4 3 Setting passcodes 4 3 1 Passcode protection In Service Code 52 passcode protection can be set for each one of the three operating levels individually This procedure should be completed after the initial commissioning setup of the instrument The passcodes should then be recorded safely for future reference When passcodes have been set the following additional steps are introduced to the configuration and programming operations Maintenance Press MODE key The display shows 000 and PASS Enter a 3 digit passcode as set in Service Code 52 to obtain access to the Maintenance Mode Commissioning Press key The display shows 000 and PASS Enter a 3 digit passcode as set in Service Code 52 to obtain access to the Commissioning Mode Service From the commissioning menu select Service by pressing YES key The display shows 000 and PASS Enter a 3 digit passcode as set in Serv
32. 00 8k55 Pb36 5 10 5 11 SC 10 Temperature compensation NaCl in water fixed T C matrix 5 12 5 13 5 5 SC 20 28 temp USP functionality inactive Fail if USP limits are 9 1 9 2 5 17 SC 57 exceeded Calibration temperature inactive adjustment 15 C 5 11 SC 12 ZERO calibration inactive adjustment 1 uS cm 5 9 SC 04 Diagnostics hard alarm on hard or soft choices 5 17 SC 53 all errors Cell fouling alarm active except E13 inactive 5 9 SC 05 Password protection inactive password for different levels 5 17 SC 52 Concentration units inactive linearization of output w 5 14 5 17 SC 31 35 55 on LCD IM 12D7B3 02E H 1 1 1 Introduction And General Description The Yokogawa EXA 202 is a 2 wire transmitter designed for industrial process monitoring measurement and control applications This user s manual contains the information needed to install set up operate and maintain the unit correctly This manual also includes a basic troubleshooting guide to answer typical user questions Yokogawa can not be responsible for the performance of the EXA analyzer if these instructions are not followed 1 1 Instrument check Upon delivery unpack the instrument carefully and inspect it to ensure that it was not damaged during shipment If damage is found retain the original packing materials including the outer box and then immediately notify the carrier and the relevant Yokogawa sales office Make sure the model number on the textpla
33. 00000 0x00200000 0x00100000 0x00080000 0x00040000 0x00020000 Simulation is enabled in AI3 Function Block 0x00010000 AI3 Function Block is in Manual mode 0x00008000 AI3 Function Block is in O S mode 0x00004000 Simulation is enabled in Al2 Function Block 0x00002000 AI2 Function Block is in Manual mode 0x00001000 AI2 Function Block is in O S mode 0x00000800 All Function Block is not scheduled 0x00000400 Simulation is enabled in All Function Block 0x00000200 All Function Block is in Manual mode 0x00000100 All Function Block is in O S mode 0x00000080 0x00000040 0x00000020 0x00000010 0x00000008 0x00000004 0x00000002 0x00000001 IM 12D7B3 02E H 8 1 APPENDIX 1 LIST OF PARAMETERS FOR EACH BLOCK OF THE EXA Note O S MAN AUTO The Write Mode column contains the modes in which each parameter is write enabled Write enabled in O S mode Write enabled in Man mode and O S mode Write enabled in Auto mode Man mode and O S mode A1 1 Resource Block Relative Parameter Factory Write Index Index Name Default Mode Explanation 0 1000 Block Header TAG RS Block Tag Information on this block such as Block Tag DD Revision 0 S Execution Time etc 1 1001 ST REV The revision level of the static data associated with the resource block The revision value is incremented each time a static parameter valu
34. 009 TRANSDUCER A directory that specifies the number and DIRECTORY starting indices of the transducers 2010 TRANSDUCER Conductivity conductivity Conductivity transducer block TYPE Transmitter 2011 XD ERROR The error code in transducer No failure Electronics failure I O failure Mechanical failure 2012 COLLECTION_ A directory that specifies the number starting DIRECTORY indices and DD item Ids of the data collection in each transducer within a transducer block IM 12D7B3 02E H 8 5 Index PARAMETERS NAME Default Valid Range Description 2013 PRIMARY VALUE conductivity conductivity resistivity Type of measurement represented by primary TYPE resistivity value 2014 PRIMARY VALUE 0 to 2 S cm Primary value of the instrument is Conductivity 2015 PRIMARY VALUE 0 to 2 S cm The range of the instrument RANGE 2016 SENSOR_CONST 0 0 01 to 10 cm 1 The conductivity cell has a specific cell constant determined by the dimensions of the cell 2017 CAL POINT HI 2 0 to 2 S cm Highest calibration point 2018 CAL POINT LO 0 0 to 2 S cm Lower calibration point 2019 CAL MIN SPAN 0 0001 gt 0 0001 S cm Minimum span between two calibration points 2020 SENSOR CAL 1point 2point METHOD 2021 SENSOR CAL till 2104 Date the sensor was last calibrated DATE 2022 SECONDARY 30 to 140 C 22 to 284 Temperature v
35. 2 according to the Write Mode of the parameter to be set or changed When actual mode has changed Note 1 data associated with the function block can be maintenanced Y back to Auto Note 2 Set the Target Note 1 of block mode A IMPORTANT Do not turn the power OFF immediately after parameter setting When the parameters are saved to the EEPROM the redundant processing is executed for an improvement of reliability Should the power be turned OFF within 60 seconds after setting of parameters changed parameters are not saved and may return to their original values Note 1 Block mode consists of the following four modes that are controlled by the universal parameter that displays the running condition of each block Target Sets the operating condition of the block Actual Indicates the current operating condition Permit Indicates the operating condition that the block is allowed to take Normal Indicates the operating condition that the block will usually take Note 2 The following are the operating conditions which the individual blocks will take Al Function Transducer Resource Block Block Block Automatic Auto Yes Yes Yes Manual Man Yes Out of Service 0 S Yes Yes Yes Refer to the List of parameters for each block of the EXA for details of the Write Mode for each block IM 12D7B3 02E H A2 3 Setting the AI1 Function Block The All functi
36. 2 1032 LIM NOTIFY 3 AUTO Maximum number of unconfirmed alert notify messages allowed 33 1033 CONFIRM TIM 5000 ms AUTO The minimum time between retries of alert reports 34 1034 WRITE LOCK Not locked AUTO If set no writes from anywhere are allowed except to clear WRITE LOCK Block inputs will continue to be updated 35 1035 UPDATE EVT 5 x This alert is generated by any change to the static data 36 1036 BLOCK ALM The block alarm is used for all configuration hardware connection failure or system problems in the block The cause of the alert is entered in the subcode field The first alert to become active will set the Active status in the Status attribute As soon as the Unreported status is cleared by the alert reporting task another block alert may be reported without clearing the Active status if the subcode has changed 37 1037 ALARM SUM Enable The current alert status unacknowledged states unreported states and disabled states of the alarms associated with the function block 38 1038 ACK_OPTION OxFFFF AUTO 39 1039 WRITE PRI 0 AUTO Priority of the alarm generated by clearing the write lock 40 1040 WRITE ALM This alert is generated if the write lock parameter is cleared 41 1041 ITK_VER 4 Version number of interoperability test by Fieldbus Foundation applied to EXA 42 1042 SOFT REV EXA software revision number 43 1043 SOFT DESC Yokogawa internal use 44 1044 SIM ENABLE MSG _ Null AUTO Soft
37. 212 F Figure 5 6 Scaling applied to temperature conversion Unit F Decimal point 2 Equations FIELD VAL 100 cheng voee c QU XD SCALE mew EU 10096 EU 0 Direct PV channel value FIELD VAL Indirect PV EU 0 100 EU G10096 EU 0 DUT SCALE Ind Sqr Root PV EU 0 FELD VAL EU 100 EU 0 OUT SCALE PV Cutoff LOW_CUT Filter PV_FTIME Simulate Convert SIMULATE L TYPE XD SCALE OUT SCALE OUT FIELD VAL Alarms HI LO IM 12D7B3 02E H 6 IN PROCESS OPERATION This chapter describes the procedure performed when changing the operation of the function block of the EXA in process 6 1 Mode Transition When the function block mode is changed to Out Of Service the function block pauses and a block alarm is issued When the function block mode is changed to Manual the function block suspends updating of output values In this case alone it is possible to write a value to the OUT parameter of the block for output Note that no parameter status can be changed 6 2 Generation of Alarm 6 2 1 Indication of Alarm Figure 6 1 Error Identification on Indicator 6 2 2 Alarms and Events Following alarm or event can be reported by EXA as an alert if allowed Analog Alerts Generated when a process value exceeds threshold By All Block Hi Hi Alarm Hi Alarm Low Alarm Low Low Alarm By Al2 Block Hi Hi Alarm Hi Alarm Low Alarm Low Low Alarm By AI3 Block Hi
38. 3 1 2165 043 0 Fax 443 1 2165 043 33 IM 12D7B3 02E H YOKOGAWA BELGIUM Yokogawa Belgium N V S A Minervastraat 16 1930 ZAVENTEM Tel 32 2 719 55 11 Fax 32 2 725 34 99 FRANCE Yokogawa Contr le Bailey S A V lizy Valley 18 20 Rue Grange Dame Rose 78140 VELIZY VILLACOUBLAY Tel 33 1 39 26 10 00 Fax 33 1 39 26 10 30 GERMANY Yokogawa Deutschland GmbH Berliner Strasse 101 103 D 40880 RATINGEN Tel 49 2102 4983 0 Fax 49 2102 4983 22 Subject to change without notice Copyright HUNGARY Yokogawa Hungaria Ltd Alkotas Center 39 C 1123BP BUDAPEST Tel 36 1 355 39 38 Fax 36 1 355 38 97 ITALY Yokogawa Italia S r l Vicolo D Pantaleoni 4 20161 MILANO Tel 39 02 66 24 11 Fax 39 02 645 57 02 SPAIN Yokogawa Espafia S A C Francisco Remiro N 2 Edif H 28028 MADRID Tel 34 91 724 20 80 Fax 34 91 355 31 40 UNITED KINGDOM Yokogawa United Kingdom Ltd Stuart Road Manor Park RUNCORN Cheshire WA7 1TR Tel 44 1 928 597100 Fax 44 1 928 597101 AUSTRALIA Yokogawa Australia Pty Ltd Private mail bag 24 Centre Court D3 25 27 Paul Street North NORTH RYDE N S W 2113 Tel 61 2 805 0699 Fax 61 2 888 1844 SINGAPORE Yokogawa Engineering Asia Pte Ltd 5 Bedok South Road SINGAPORE 469270 Tel 65 241 99 33 Fax 65 444 62 52 JAPAN Yokogawa Electric Corporation 2 9 32 Nakacho Musashino shi TOKYO 180 Tel 81 422 52 5617 Fax 81 422 52 0622 SOU
39. 6 9 847 Service passcode On 53 Err 01 Error setting Polarization too high Soft Hard 0 1 1 Hard Err 05 Shorted measurement Soft Hard 0 1 1 Hard Err 06 Open measurement Soft Hard 0 1 1 Hard Err 07 Temperature sensor open Soft Hard 0 1 1 Hard Err 08 Temp sensor shorted Soft Hard 0 1 1 Hard Err 13 USP limit exceeded Soft Hard 0 1 0 Soft 54 E5 LIM E5 limit setting Maximum conductivity value 250 mS Minimum resistivity value 0 004 KQ E6 LIM E6 limit setting Minimum conductivity value 1 000 uS Maximum resistivity value 1 000 MQ 55 Display mA in w w mA range displayed in w w off off mA range displayed in w w on 0 Set 0 output value in w w 100 Set 100 output value in w w 56 DISP Display resolution Auto ranging display 0 Auto Display fixed to X XXX uS cm or MQ cm 1 Display fixed to XX XX uS cm or MQ cm 2 Display fixed to XXX X uS cm or MQ cm 3 Display fixed to X XXX mS cm or kO cm 4 Display fixed to XX XX mS cm or kQ cm 5 Display fixed to XXX X mS cm or kO cm 6 Display fixed to XXXX mS cm or kQ cm 7 57 USP USP setting Disable the E13 USP limit exceeded 0 0 Off Enable the E13 USP limit exceeded 1 Code Display Function Function detail X Default values Communication 62 ERASE Erase logbook Press YES to clear logbook data Code Display Function Function detail X Default values General 70 OAD Load defaults Reset configuration to default values IM 12D7B3 02E H 5 18 IM 12D7B3 02E H
40. 7 uS 50 0 173 uS 0 190 uS 0 220 uS 0 286 uS 1 008 uS 60 0 251 uS 0 271 uS 0 302 uS 0 366 uS 1 123 uS 70 0 350 uS 0 375 uS 0 406 uS 0 469 uS 1 244 uS 80 0 471 uS 0 502 uS 0 533 uS 0 595 uS 1 373 uS Ammonia p 0 ppb 2 ppb 5 ppb 10 ppb 50 ppb selection 2 0 0 0116 uS 0 0229 uS 0 0502 uS 0 0966uS 0 423 uS 10 0 0230 uS 0 0337 uS 0 0651 uS 0 122 uS 0 535 uS 20 0 0419 uS 0 0512 uS 0 0842 uS 0 150 uS 0 648 uS 30 0 0710 uS 0 0788 uS 0 111 uS 0 181 uS 0 758 uS 40 0 113 uS 0 120 uS 0 149 uS 0 221 uS 0 866 uS 50 0 173 uS 0 178 uS 0 203 uS 0 273 uS 0 974 uS 60 0 251 uS 0 256 uS 0 278 uS 0 344 uS 1 090 uS 70 0 350 uS 0 356 uS 0 377 uS 0 439 uS 1 225 uS 80 0 471 uS 0 479 uS 0 501 uS 0 563 uS 1 393 uS Morpholine p 0 ppb 20 ppb 50 ppb 100 ppb 500 ppb selection 3 0 0 0116 uS 0 0272 uS 0 0565 uS 0 0963uS 0 288 uS 10 0 0230 uS 0 0402 uS 0 0807 uS 0 139 uS 0 431 uS 20 0 0419 uS 0 0584 uS 0 108 uS 0 185 uS 0 592 uS 30 0 0710 uS 0 0851 uS 0 140 uS 0 235 uS 0 763 uS 40 0 113 uS 0 124 uS 0 181 uS 0 289 uS 0 938 uS 50 0 173 uS 0 181 uS 0 234 uS 0 351 uS 1 12 uS 60 0 251 uS 0 257 uS 0 306 uS 0 427 uS 1 31 uS 70 0 350 uS 0 357 uS 0 403 uS 0 526 uS 1 52 pS 80 0 471 uS 0 481 uS 0 528 uS 0 654 uS 1 77 pS Hydrochloric Acid 196 2 3 4 5 selection 4 0 65 mS 125 mS 179 mS 229 mS 273 mS 15 91 mS 173 mS 248 mS 317 mS 379 mS 30 114 mS 217 mS 313 mS 401 mS 471 mS 45 135 mS 260 mS 370 mS 474 mS 565 mS 60 159 mS 301 mS 430 mS 549 mS 666 mS Sodium Hydroxide 196 2 3 4 5 selection 5
41. ACROCYCLE specified in 1 32 ms 21332 0 66 s 279 FB START ENTRY 4 Not used SM A maximum of 100 ms is taken for execution of an Al block Executions of Al blocks should be scheduled sequentially In no case should two Al function blocks of the EXA be executed at the same time execution time is overlapped 100 ms after Al block execution start the out value is available for further processing 5 3 Figure 5 3 shows an example of schedule based on the loop shown in Figure 5 2 FC100 Figure 5 2 Example of Loop Connecting Function Block of Two EXA with Other Instruments Macrocycle Control Period LI100 Commu Unscheduled nication Communication Schedule Scheduled Communication Figure 5 3 Function Block Schedule and Communication Schedule When the macrocycle is set to more than 4 seconds set the following intervals to be more than 1 of the macrocycle Interval between end of block execution and start of sending CD from LAS Interval between end of block execution and start of the next block execution IM 12D7B3 02E H 5 4 5 4 Setting of Tags and Addresses This section describes the steps in the procedure to set PD Tags and node addresses in the EXA There are three states of Fieldbus devices as shown in Figure 5 4 and if the state is other than SM_OPERATIONAL state no function block is executed EXA must be tra
42. Active status in the Status attribute As soon as the Unreported status is cleared by the alert reporting task another block alert may be reported without clearing the Active status if the subcode has changed IM 12D7B3 02E H 8 4 Relative Parameter Factory Write Index Name Default Mode Explanation 22 ALARM_SUM Enable The current alert status unacknowledged states unreported states and disabled states of the alarms associated with the function block 23 ACK OPTION OxFFFF AUTO Selection of whether alarms associated with the block will be automatically acknowledged 24 ALARM HYS 0 5 AUTO Amount the PV must return within the alarm limits before the alarm condition clears Alarm Hysteresis is expressed as a percent of the PV span 25 HI HI PRI 0 AUTO Priority of the high high alarm 26 HI HI LIM INF AUTO The setting for high high alarm in engineering units 27 HI PRI 0 AUTO Priority of the high alarm 28 HI LIM INF AUTO The setting for high alarm in engineering units 29 LO_PRI 0 AUTO Priority of the low alarm 30 LO_LIM INF AUTO The setting for the low alarm in engineering units 31 LO_LO PRI 0 AUTO Priority of the low low alarm 32 LO LO LIM INF AUTO The setting of the low low alarm in engineering units 33 HI HI ALM The status for high high alarm and its associated time stamp 34 HI ALM The status f
43. Al function block It may be chosen from among Direct Indirect and IndirectSQRT Direct The output of the transducer block is directly output only via filtering without scaling and square root extraction Indirect Output processed by proportion at the Al function block IndirectSQRT Output processed by square root extraction at the Al function block Output signal low cut mode setup LOW_CUT If the output falls below the setting of this parameter the output is set to Zero It can be set individually with Direct Indirect and IndirectSQRT Damping time constant setup PV_FTIME Sets the time constant of the damping primary delay function in the Al function block in seconds Simulation setup SIMULATE Performs simulation of the Al function block The input value and status for the calibration range can also be set It is recommended that this parameter be used for loop checks and other purposes Refer to Simulation Function in Section 6 3 IM 12D7B3 02E H 9 2 A2 2 Setting and Change of Basic Parameters This section describes the procedure taken to set and change the parameters for each block Obtaining access to each parameter differs depending on the configuration system used For details refer to the instruction manual for each configuration system Access the block mode MODE_BLK of each block Y Set the Target of block mode MODE BLK to Auto Man or O S Note
44. Block Execution Control index Link Obiect Factory Settings RA 30000 1 AIL OUT VCR 46 According to the instructions given in Section 5 3 30001 2 Trend VCRE set the execution cycle of the function blocks and 30002 3 Alert VCRE schedule of execution 30003 P AD GUT GR 30004 5 Al3 0UT y VCR 10 30005 6 Not used IM 12D7B3 02E H 5 6 2 Trend Object It is possible to set the parameter so that the function block automatically transmits Trend The EXA has three Trend objects which are used for Trend in analog mode parameters A single Trend object specifies the trend of one parameter Each Trend object has the parameters listed in Table 5 8 The first four parameters are the items to be set Before writing to a Trend object it is necessary to release the WRITE LOCK parameter Table 5 8 Parameters for Trend Objects 3 7 Sub index 1 Parameters Block Index Description Sets the leading index of the function block that takes a trend Network Management Information Base Fieldbus T Parameter Relative Index Sets the index of parameters taking a trend by a value relative to the beginning of the function block In the EXA Al block the following three types of trends are possible 7 PV 8 OUT 19 FIELD VAL Sample Type Specifies how trends are taken Choose one of the following 2 types 1 Sampled upon execution of a function block 2 The averag
45. Code 25 Solution 2 396 L2 86 mS cm 145 mS cm 207 mS cm 264 mS cm 318 mS cm Code 26 Solution 3 696 L3 146 mS cm 256 mS cm 368 mS cm 473 mS cm 575 mS cm Code 27 Solution 4 1096 L4 195 mS cm 359 mS cm 528 mS cm 692 mS cm 847 mS cm Code 28 Solution 5 1596 L5 215 mS cm 412 mS cm 647 mS cm 897 mS cm 1134 mS cm IM 12D7B3 02E H Code Display Function Function detail X Default values Temperature compensation functions 20 T R C Set reference temp Use gt ENT keys to set value 25 C 21 T C 1 Set temp coef 1 Adjust compensation factor 2 1 if set to TC in section 5 2 5 per C Set value with gt ENT keys LC 2 Set temp coef 2 Adjust compensation factor 2 1 96 if set to TC in section 5 2 5 per C Set value with gt ENT keys 22 MATRX Select matrix Choose matrix if set to matrix comp in section 5 2 5 using ENT keys HCI cation pure water 0 80 C 1 1 HCl Ammonia pure water 0 80 C 2 Morpholine pure water 0 80 C 3 HCI 0 5 0 60 C 4 NaOH 0 5 0 100 C 5 User programmable matrix 9 23 T1 C F Set temp range Enter 1st lowest matrix temp value T2 Enter 2nd matrix temp value T3 Enter 3rd matrix temp value T4 Enter 4th matrix temp value T5 Enter 5th highest matrix temp value 24 L1xT1 Enter conductivity Value for T1 L1xT2 values for lowest Value for T2 he concentration L1xT5 Value for T5 25 L2xT1
46. Concentration 2 Similar to code 24 26 L3xT1 Concentration 3 Similar to code 24 27 L4xT1 Concentration 4 Similar to code 24 28 L5xT1 Concentration 5 Similar to code 24 IM 12D7B3 02E H 5 12 5 5 mA output functions Code35 TABLE The table function allows the configuration of an output curve by 21 steps intervals of 5 Before entering all table values the concentration values for the 0 and 100 should be set in service code 55 The intermediate points 5 to 95 are set automatically The following example shows how the table may be configured to linearize the output with a mA curve Output 96 H2SO4 mS cm 0 0 set in SC55 0 CONDUCTIVITY mS cm Output in 5 125 60 1000 100 10 2 5 113 15 3 75 180 800 80 20 5 218 ads PE gt 25 6 25 290 30 75 335 400 4 40 35 8 75 383 40 10 424 200 20 45 11 25 466 i E E OT ss 50 12 5 515 0 2 4 6 8 1012 14 16 18 20 22 24 25 13 75 555 60 15 590 CONCENTRATION by weight 65 16 25 625 70 17 5 655 75 18 75 685 Conductivity 80 20 718 Output 85 21 25 735 90 22 5 755 95 23 75 715 100 25 set inSC55 791 Fig 5 1 Linearization of output example 0 25 Sulfuric acid Table 5 3 IM 12D7B3 02E H 5 13 Code Display Function Function detail Default values Output
47. In almost all applications this temperature influence must be compensated before the conductivity reading can be interpreted as an accurate measure of concentration or purity Table 5 1 NaCl compensation according to IEC 746 3 with Tref 25 C T Kt a T Kt a T Kt a 0 0 54 1 8 60 1 76 2 2 130 3 34 2 2 10 0 72 1 9 70 1 99 2 2 140 3 56 2 2 20 0 90 2 0 80 2 22 2 2 150 3 79 2 2 25 1 0 90 2 45 2 2 160 4 03 2 2 30 1 10 2 0 100 2 68 2 2 170 4 23 2 2 40 1 31 2 0 110 2 90 2 2 180 4 42 2 2 50 1 53 2 1 120 3 12 2 2 190 4 61 2 2 200 4 78 2 2 IM 12D7B3 02E H 5 2 2 Standard temperature compensation From the factory the EXA is calibrated with a general temperature compensation function based on a sodium chloride salt solution This is suitable for many applications and is compatible with the compensation functions of typical laboratory or portable instruments A temperature compensation factor is derived from the following equation Kc Ke y 100 T Tref Kref In which a Temperature compensation factor in C T zMeasured temperature C K Conductivity at T Tre Reference temperature C Ke Conductivity at Tre 3 Manual temperature compensation If the standard compensation function is found to be inaccurate for the sample to be measured the converter can be set manually for a linear factor on site to match the application The procedure is as follows Take a representative sam
48. NER ELECTRODE RED O 16 INNER ELECTRODE O 11 TEMPERATURE 12 TEMPERATURE 13 OUTER ELECTRODE 14 OUTER ELECTRODE r 15 INNER ELECTRODE O 16 INNER ELECTRODE SEPARATE SENSORS WITH WU40 LH CABLE TO 11 TEMPERATURE 12 TEMPERATURE 13 OUTER ELECTRODE 14 OUTER ELECTRODE TO 15 INNER ELECTRODE TO 16 INNER ELECTRODE SC4A SENSORS WITH INTEGRATED CABLE SX42 8X F SENSORS Figure 3 9 Sensor wiring diagrams IM 12D7B3 02E H 3 5 3 5 Other sensor systems To connect other sensor systems follow the general pattern of the terminal connections as listed below 11 and 12 Always used for temperature compensation resistor input 13 and 14 Normally used for the outer electrode 15 and 16 Used for inner electrode In case a 4 electrode measuring system will be used 14 and 16 should be used for the current electrodes Please ensure that shielded cabling will be used In figure 3 10 this is shown in a schematic way 11 12 13 14 15 16 11 12 13 14 15 16 2 electrodes configuration 4 electrodes configuration Figure 3 10 Connection diagram for other sensors 11 12 13 14 15 16 SENSOR Fig 3 11 Terminal indentification label 3 6 Sensor connection using junction box and extension cable Where a convenient installation is not possible using the standard cables between sensors and converter a junc
49. NON SPECIFIC SPECIFIC SPECIFIC SPECIFIC BAD NON BAD NON SPECIFIC BAD NON_ BAD NON_ BAD NON SPECIFIC SPECIFIC SPECIFIC SPECIFIC BAD NON BAD NON SPECIFIC BAD NON BAD NON_ BAD NON SPECIFIC SPECIFIC SPECIFIC SPECIFIC BAD CONFIG BAD CONFIG ERR BAD CONFIG BAD CONFIG _ BAD CONFIG_ERR ERR ERR ERR BAD CONFIG BAD CONFIG_ERR BAD CONFIG BAD CONFIG _ BAD CONFIG_ERR ERR ERR ERR BAD DEVL BAD DEV BAD DEV_FAIL BAD DEV_ BAD DEV_FAIL _FAIL FAI _FAIL FAIL BAD DEV BAD DEV BAD DEV_FAIL BAD DEV_ BAD DEV_FAIL FAIL FAIL FAIL BAD DEV BAD DEV BAD DEV_FAIL BAD DEV_ BAD DEV_FAIL _FAIL _FAIL FAIL BAD DEV BAD DEV BAD DEV_FAIL BAD DEV_ BAD DEV_FAIL FAIL FAIL FAIL BAD DEV BAD DEV BAD DEV_FAIL BAD DEV_ BAD DEV_FAIL FAIL FAIL FAIL BAD NON_ BAD NON BAD NON_ BAD NON_ BAD NON_SPECIFIC SPECIFIC SPECIFIC SPECIFIC SPECIFIC BAD OUT_ BAD NON BAD NON_ BAD NON_ BAD NON_SPECIFIC OF SERVICE SPECIFIC SPECIFIC SPECIFIC BAD OUT_OF SERVICE BAD OUT_ OF SERVICE BAD OUT_ OF SERVICE IM 12D7B3 02E H EUROPEAN HEADQUARTERS Yokogawa Europe B V Vanadiumweg 11 3812 PX AMERSFOORT The Netherlands Tel 31 33 4641 611 Fax 431 33 4641 610 E mail info yokogawa nl www yokogawa europe com THE NETHERLANDS Yokogawa Nederland B V Hoofdveste 11 3992 DH HOUTEN Tel 31 30 635 77 77 Fax 31 30 635 77 70 AUSTRIA Yokogawa Austria Ges m b H Franzensbr ckenstrasse 26 A 1021 WIEN Tel 4
50. NS Temperature sensor Pt1000 0 0 Pt1000 Ni100 1 Pb36 2 Pt100 3 8k55 4 11 T UNIT Display in C or F C 0 0 C F 1 12 T ADJ Calibrate temperature Adjust reading to allow for cable None resistance Use gt ENT keys to adjust value 5 7 IM 12D7B3 02E H 5 10 5 4 Temperature compensation functions Code20 T R C Choose a temperature to which the measured conductivity or resistivity value must be compensated Normally 25 C is used therefore this temperature is chosen as default value The range for this setting is 0 to 100 C If T UNIT in code 11 is set to F the default value is 77 F and the range is 32 212 F Code21 T C 1 T C 2 In addition to the procedure described in section 5 2 4 it is possible to adjust the compensation factor directly If the compensation factor of the sample liquid is known from laboratory experiments or has been previously determined it can be introduced here Adjust the value between 0 00 to 3 50 96 per C In combination with reference temperature setting in code 20 a linear compensation function is obtained suitable for all kinds of chemical solutions Code 22 MATRX The EXA is equipped with a matrix type algorithm for accurate temperature compensation in various applications Select the range as close as possible to the actual temperature concentration range The EXA will compensate by interpolation and extrapolation Consequently there is no need for a
51. TH AFRICA Yokogawa South Africa Pty Itd 67 Port Road Robertsham Southdale 2135 JOHANNESBURG Tel 27 11 680 5420 UNITED STATES OF AMERICA Yokogawa Corporation of America 2 Dart Road NEWNAN GA 30265 1040 Tel 1 770 253 70 00 Fax 1 770 251 20 88 ISO 9001 CERTIFICATED FIRM CENTRAL EAST REGION Via Yokogawa Austria Czechia Slovakia Poland Croatia Slovenia J ugoslavia Bulgaria Romania Macedonia Bosnia amp Herzegovina Distributors in Denmark Finland Greece Norway Portugal Sweden Switzerland and Turkey Fax 27 11 680 2922 Block 02 07 99 Printed in The Netherlands 01 203 A Q
52. ables default Two independent user programmable temperature coefficients from 0 00 to 3 50 per C F by adjustment or Calibration Conductivity as a function of concen tration and temperature Choice out of 5 preprogrammed matrices and a 25 point user programmable matrix Software record of important events and diagnostic data Available through FF interface Custom liquid crystal display with a main display of 31 2 digits 12 5 mm high Message display of 6 alpha numeric characters 7 mm high Warning flags and units uS cm mS cm kQ cm and MQ cm as appropriate 9 to 32 VDC 1000 VDC Package size w xh x d 290 x 225 x 170 mm 11 5 x 8 9 x 6 7 in Packed weight approx 2 5 kg lb IM 12D7B3 02E H 2 2 2 2 Operating specifications Conductivity lt 0 5 Resistivity lt 0 5 Temperature with Pt10000 Ni100Q A Performance Accuracy Performance Accuracy Performance Accuracy Performance Accuracy Performance NaCl table Matrix Ambient influence Step response F Housing and Pb36 NTC lt 0 3 C Temperature with PT100Q and 8k55Q lt 0 4 C Temperature compensation lt 1 lt 3 0 05 C 90 96 lt 2 decades in lt 7 seconds B Ambient operating temperature 10 to 55 oC 10 to 130 9F H Excursions to 30 to 70 oC 20 to 160 F will not damage the l instrument specification maybe adve
53. ality with the USP table 3 We have kept all the EXA functionality It is even possible to have the Display readings in resistivity units Most users will have very good water quality and in the resistivity mode they will have better resolution on the recorder or DCS The readings are simply the reciprocal values of the conductivity values IM 12D7B3 02E H 9 2 9 4 Setting up SC 202 for USP First enable USP in service code 57 Change the setting from 0 default to 1 enabled This activates uncompensated conductivity in the display menu The E13 feature is also enabled For E13 the FAIL flag is triggered when the uncompensated conductivity exceeds the relevant value in the graph Conductivity limit as a function of temperature 3 5 3 5 25 d 3 5 n 15 2 1 E 0 5 25 50 75 100 Temperature in C Fig 9 1 IM 12D7B3 02E H 10 Spare Parts 10 1 Table 10 1 Itemized parts list Item No Description Part no 1 Cover assembly including window gasket and fixing screws K1542 Z 2 Window K1542 N 3 Terminals block of 3 K1544PF 4 Terminals block of 5 K1544PG 5 Case assembly EXA 202 Fielbus board K1544KD 6 Gland set one gland including seal and backing nut K1500AU 7 Text plate general purpose version only K1544GD 8 Pin header Internal FF connector K1544FA
54. alue VALUE 2023 SECONDARY 2C 2C F Temperature unit VALUE UNIT 2024 SENSOR TEMP automatic Off manual automatic Select off when no temperature compensation _COMP is required Select manual when no temperature element is available and the temperature is stable and select auto when a temperature element is available 2025 SENSOR_TEMP 25 30 to 140 20 to 2809F manual temperature value MAN_VALUE 2026 SENSOR_TYPE Pt1000 Pt1000 Pt100 5k1 3kBalco Temperature element used TEMP 8k55 350 NTC10k 6k8 2027 SENSOR_ 2 2 Only 2 wire connections supported CONNECTION_ TEMP 2028 SENSOR_ contact 2 2 electrode Either 2 electrode or 4 electrode contacting TYPE COND electrode 4 electrode conductivity cell can be selected 2029 SENSOR OHMS Actual cell resistance 2030 XD MAN ID Jui 2031 TEMPERATURE 2 1 0 to 1096 9C 9F Process temperature compensation factor _COEFF 2032 CONCENTRATION Conductivity combined with temperature can be directly related to the concentration Concentraion is expressed in percentage 2033 TERTIARY VALUE 0 to 2 S cm Second compensated conductivity value 2034 REFERENCE 25 0 to 100 C Conductivity can be process compensated to a TEMPERATURE standard reference temperature Mostly 20 C or 25e C is used 2035 COMP METHOD NaCl None NaCl TC matrix Method of process temperature compensation for the primary value 2036 COMP_MATRIX_SEL HCI HCI cation When matrix compensation is required one can 0 80 C
55. ased performance with advanced self diagnostics and enhanced communications capability to meet the most advanced requirements The measurement can be used as part of an automated process control system It can also be used to indicate dangerous limits of a process to monitor product quality or to function as a simple controller for a dosing neutralisation system Yokogawa designed the EXA analyzer to withstand harsh environments The converter may be installed either indoors or outside because the IP65 NEMA4X housing and cabling glands ensure the unit is adequately protected The flexible polycarbonate window on the front door of the EXA allows pushbutton access to the keypad thus preserving the water and dust protection of the unit even during routine maintenance operations A variety of EXA hardware is optionally available to allow wall pipe or panel mounting Selecting a proper installation site will permit ease of operation Sensors should normally be mounted close to the converter in order to ensure easy calibration and peak performance If the unit must be mounted remotely from the sensors WF10 extension cable can be used up to a maximum of 30 metres 90 feet with a BA10 junction box The EXA is delivered with a general purpose default setting for programmable items Default settings are listed in Chapter 5 While this initial configuration allows easy start up the configuration should be adjusted to suit each particular application A
56. bj 13 not open 0x00000004 Link Obj 14 not open 0x00000002 Link Obj 15 not open 0x00000001 Link Obj 16 not open DEVICE STATUS 2 Hexadecimal Display through DD 0x80000000 0x40000000 0x20000000 0x10000000 0x08000000 0x04000000 0x02000000 0x01000000 0x00800000 0x00400000 0x00200000 0x00100000 0x00080000 FF interface checksum error 0x00040000 EXA checksum error E21 0x00020000 Hart communication failure 0x00010000 FF interface eeprom failure 0x00008000 EXA eeprom failure E20 0x00004000 mismatch between FF parameter and EXA parameter 0x00002000 0x00001000 0x00000800 0x00000400 0x00000200 0x00000100 matrix error E4 0x00000080 concentration table error E18 0x00000040 conductivity exceeds usp limit E13 0x00000020 polarization detected E1 0x00000010 temperature compensation error E2 0x00000008 temperature sensor shorted E8 0x00000004 temperature sensor open E7 0x00000002 conductivity exceeds low limit E6 0x00000001 conductivity exceeds high limit E5 IM 12D7B3 02E H DEVICE STATUS 3 Hexadecimal Display through DD 0x80000000 0x40000000 0x20000000 0x10000000 0x08000000 Transducer Block is in O S mode 0x04000000 0x02000000 0x01000000 0x00800000 0x004
57. c id 6 2 7 MAINTENANCE ire REG aer P RES du em eeu 7 1 7 1 Periodic maintenance for the EXA 202 transmitter sss eene 7 1 7 2 Periodic maintenance for the sensor System 7 1 IM 12D7B3 02E H 8 TROUBLESHOOTING nare e mr e e t Deren OEC a IEEE Rab URS 8 1 8 1 Diagnostics c creed cedi ed mte pec date ubt tei pe ect pe Oe PE pe Ed a 8 2 8 1 1 Off line calibration checks ii 8 2 8 1 2 On line impedance ChECKS ee eee eee cere sees tastes testes tees cee nnns 8 2 9 USP Water Purity Monitoring emere 9 1 9 1 What s USAR acetate ico re Ee vi ee co Erde tlbi Dopo dod 9 1 9 2 What is conductivity measurement according to USP ssssssssss ees 9 1 9 3 USP inrthie 5C 2027 anne Breker d e m hene quie ade 9 1 9 4 Setting SC202 Tor US Pia e diete i ed pe beein 9 2 10 SPARE PARTS Nu eret ec petere eno e e I eer rr REO her E er tene 10 1 1041 Itemized parts list oa aia 10 1 1T APPENDIX e oe E Hee eb RR ERR UG RR T er OR e e Ele rede csi 11 1 11 1 User setting for non linear output table code 31 and 35 11 1 11 2 User entered matrix data code 23 tO 28 eem mener nennen 11 1 11 3 Matrix data table user selectable in code 22 11 2 11 4 Sensor selection pede e E ee e pd et e iia ER LOIR eds 11 3 A ce tm eek lu an 11 3 11 422 Sensor selection e dde tec rc ere rst aie se bene 11 3 11 4 3 Selecting a temperature sensor 11 3 11 5 Setup for other functions
58. communication 0x00004000 NEEDS MAINT ELECTRONICS BAD DEV BAD DEV failure NOW ERR FAILURE FAIL FAIL EXA checksum error E21 0x00002000 ELECTRONICS BAD DEV BAD DEV FAILURE FAIL FAIL FF interface checksum 0x00001000 error resource block out of 0x00000800 OUT_OF_ BAD NON BAD NON service SERVICE ERR SPECIFIC SPECIFIC transducer block out of 0x00000400 OUT_OF_ BAD OUT_OF BAD OUT_ service SERVICE ERR SERVICE OF SERVICE All out of service 0x00000200 All in manual mode 0x00000100 All in simulation mode 0x00000080 SIMULATE ACTIVE ERR All not scheduled 0x00000040 AI2 out of service 0x00000020 AI2 in manual mode 0x00000010 Al2 in simulation mode 0x00000008 SIMULATE_ ACTIVE ERR AI3 out of service 0x00000004 AI3 in manual mode 0x00000002 AI3 in simulation mode 0x00000001 SIMULATE_ ACTIVE_ERR IM 12D7B3 02E H 10 2 channel 1 AI1 channel 2 Al2 channel 3 AI3 channel 4 TV status CONCENTRATION status OUT status OUT status OUT status OUT status BAD SENS BAD SENS FAIL BAD SENS BAD SENS FAIL BAD SENS FAIL FAIL FAIL BAD SENS BAD SENS FAIL BAD SENS BAD SENS FAIL BAD SENS FAIL FAIL FAIL BAD SENS BAD SENS FAIL BAD SENS BAD SENS FAIL BAD SENS FAIL BAD SENS FAIL FAIL FAIL BAD SENS BAD SENS FAIL BAD SENS BAD SENS FAIL BAD SENS FAIL BAD SENS FAIL FAIL FAIL BAD NON BAD NON SPECIFIC BAD NON BAD NON BAD
59. duled interval in the macrocycle A Client may want to issue many requests at a time A Client Server VCR has a queue to store those requests and sends the requests one by one when the node has the token Source Sink Model A Source Sink VCR is designed to broadcast messages It is one to many one way communication without any schedule This model is sometimes called Report Distribution Model A Source VCR transfers a message in the queue to an assigned global address when the device has the token Sink VCRs are set to the same global address and receive the same message from a Source Foundation devices use this model for two specific purposes One is to report alarms or events detected in the Source and the other is to transmit trends of Source Function Blocks Alarms are acknowledged through a Client Server VCR It is desirable for an alarm logger to receive alarms from all devices with just one VCR A Sink can receive messages from many Sources if the Sources are configured to send messages to the same global address A Source VCR transmits data without established connection A Sink QUU VCR on another device can receive it if the Sink is configured so A Publisher VCR transmits data when LAS requests so An explicit connection is established from VCR s so that a Subscriber knows the format of published data Each VCR has the parameters listed in Table 5 4 Parameters must be changed together for each VCR because modification
60. e 6 3 above is set to 2 the applicable function block uses the simulation value set in this parameter instead of the data from the transducer block This setting can be used for propagation of the status to the trailing blocks generation of a process alarm and as an operation test for trailing blocks IM 12D7B3 02E H Disable Enable Figure 6 2 SIMULATE ENABLE Switch Position 7 DEVICE STATUS 7 1 Device setting status and failures of EXA are indicated by using parameter DEVICE STATUS 1 DEVICE STATUS 2 and DEVICE STATUS 3 index 1045 1046 and 1047 in Resource Block Table 7 1 Contents of DEVICE STATUS 1 DEVICE STATUS 2 and DEVICE STATUS 3 DEVICE STATUS 1 Hexadecimal Display through DD 0x80000000 0x40000000 0x20000000 0x10000000 0x08000000 0x04000000 0x02000000 0x01000000 0x00800000 Sim enable J mpr On 0x00400000 RB in O S mode 0x00200000 0x00100000 0x00080000 Fbus EEPROM error 0x00040000 0x00020000 0x00010000 0x00008000 Link Obj 1 not open 0x00004000 Link Obj 2 not open 0x00002000 Link Obj 3 not open 0x00001000 Link Obj 4 not open 0x00000800 Link Obj 5 not open 0x00000400 Link Obj 6 not open 0x00000200 Link Obj 7 not open 0x00000100 Link Obj 8 not open 0x00000080 Link Obj 9 not open 0x00000040 Link Obj 10 not open 0x00000020 Link Obj 11 not open 0x00000010 Link Obj 12 not open 0x00000008 Link O
61. e in this block is changed 2 1002 TAG DESC Null AUTO The user description of the intended application of the block 3 1003 STRATEGY 1 AUTO The strategy field can be used to identify grouping of blocks This data is not checked or processed by the block 4 1004 ALERT KEY 1 AUTO The identification number of the plant unit This information may be used in the host for sorting alarms etc 5 1005 MODE BLK AUTO AUTO The actual target permitted and normal modes of the block 6 1006 BLOCK ERR This parameter reflects the error status associated with the hardware or software components associated with a block It is a bit string so that multiple errors may be shown 7 1007 RS STATE State of the resource block state machine 8 1008 TEST RW Null AUTO Read write test parameter used only for conformance testing and simulation 9 1009 DD RESOURCE Null String identifying the tag of the resource which contains the Device Description for this resource 10 1010 MANUFAC D 0x00594543 Manufacturer identification number used by an interface device to locate the DD file for the resource 11 1011 DEV_TYPE 3 Manufacturers model number associated with the resource used by interface devices to locate the DD file for the resource 12 1012 DEV REV 1 Manufacturer revision number associated with the resource used by an interface device to locate the DD file for the resource 13 1013 DD REV 1 Revision ofthe DD associated with the resource used b
62. e on the following pages On the page facing the setting tables are concise explanations of the purpose of the service codes 5 5 X SERV YES NO YES IM 12D7B3 02E H 5 6 5 3 Service Codes 5 3 1 Parameter specific functions Codel SC RES Code 2 4 ELEC Code 3 0 10xC Code 4 AIR Code 5 POL CK Choose the required parameter either conductivity or resistivity If the parameter is changed the instrument will go into reset to load parameter specific default values followed by starting measurement For all other service codes the instrument will return to commissioning mode after the service code setting is finished Choose the required sensor type Normally conductivity and or resistivity measurements are done with 2 electrode type sensors At high conductivity ranges polarization of the electrodes may cause an error in conductivity measurement For this reason 4 electrode type sensors may be necessary Enter the factory calibrated cellconstant mentioned on the textplate or on the fixed cable This avoids the need for calibration Any value between 0 008 and 50 0 cm may be entered The position of the decimal point can be changed when it is flashing note If the actual cell constant is changed after a calibration or if the entered cell constant differs from previo
63. e value is sampled Sample Interval Specifies sampling intervals in units of 1 32 ms Set the integer multiple of the function block execution cycle 5 Last Update The last sampling time 6to 21 List of Status 16 samples of status 21 to 37 List of Samples 16 samples of data Three trend objects are factory set as shown Table 5 9 Table 5 9 Trend Object are Factory Set Index Parameters Factory Settings 32000 TREND FLT 1 Not used 32001 TREND FLT 2 Not used 32002 TREND FLT 3 Not used Jess eem Figure 5 5 Example of Default Configuration 5 6 3 View Object This is the object to form groups of parameters in a block One advantage of forming groups of para meters is the reduction of load for data transaction The EXA has four View Objects for each Resource block Transducer block and All AI2 AI3 function block and each View Object has the parameters listed in Table 5 11 to 5 13 Table 5 10 Purpose of Each View Object Description VIEW 1 Set of dynamic parameters required by operator for plant operation PV SV OUT Mode etc VIEW 2 Set of static parameters which need to be shown to plant operator at once Range etc VIEW 3 Set of all the dynamic parameters VIEW 4 Set of static parameters for configuration or maintenance IM 12D7B3 02E H 5 8 Table 5 11 View Object for Resource Block
64. e with the four screws 6 Connect the grounding terminals to protective earth 7 The optional hose connection is used to guide the cables coming from an immersion fitting through a protective plastic tubing to the transmitter 3 2 1 Cables terminals and glands The SC202 is equipped with terminals suitable for the connection of finished cables in the size range 0 13 to 2 5 mm 26 to 14 AWG The glands will form a tight seal on cables with an outside diameter in the range of 7 to 12 mm 9 32 to 15 32 inches S bl QD seni O Sinni Fieldbus KEA cable gland Grounding terminal pesa connect to safety ground O only if power supply is not grounded Figure 3 5 Glands to be used for cabling Figure 3 6 Pinhead connector Male Female 1 8 3 1 2 i 4 4 T 2 1 Blue voltage 2 Brown voltage 3 Grey shield drain wire 4 Green yellow ground The grey shield wire is not connected at the instrument side It is advised to cut of this wire Figure 3 7 Option T Turck connector Figure 3 8 Turck connector pin numbers IM 12D7B3 02E H 3 4 3 3 Wiring of sensors 3 3 1 General precautions Generally transmission of signals from SC sensors is at a low voltage and current level Thus a lot of care must make sure that following be taken to avoid interference Before connecting sensor cables to the transmitter co
65. ent with square wave excitation Cell constants from 0 008 to 50 cm WU40 sensor cable up to 20m Up to 30m total using BA10 junction box and WF10 extension cable Frequency read pulse position and reference voltage are dynamically optimized 0 000 uS cm to 1999 mS cm at 25 C 77 F reference temperature 0 2 uS x C at process temperature underrange 0 000 uS cm 500 mS x C at process temperature overrange 550 mS x C 0 000 kQ 999 MQ C at 25 C 77 F reference temperature 0 002 kO C at process temperature underrange 0 000 kQ x cm 5 MQ C at process temperature overrange 999 MQ x cm 0 500 F 0 400 F 10 250 F 0 250 F anaa min 0 01uS cm max 1999 mS cm max 9096 zero suppression min KOxcm max 999 MQ x cm max 90 zero suppression Dependent on temp sensor type min max 25 C 50 F 250 C 500 F 25 C 50 F 200 C 400 F 25 C 50 F 100 C 200 F The instrument is user programmable for linear or non linear conductivity ranges E Temperature compensation Reference temp Automatic for temperature ranges mentioned under C inputs programmable from 0 to 100 C or 30 to 210 F default 25 C F Compensation algorithm NaCl T C Matrix G Logbook H Display I Power supply J Input isolation K Shipping Details According IEC 746 3 NaCl t
66. epair is strictly restricted and non observance or negligence of these restriction would result dangerous condition IM 12D7B3 02E H 2 2 IM 12D7B3 02E H 3 ABOUT FIELDBUS 3 1 Outline Fieldbus is a bi directional digital communication protocol for field devices which offers an advancement implementation technologies for process control systems and is widely employed by numerous field devices EXA Series Fieldbus communication type employs the specification standardized by The Fieldbus Foundation and provides interoperability between Yokogawa devices and those produced by other manufacturers Fieldbus comes with software consisting of three Al function blocks providing the means to implement flexible instrumentation system For information on other features engineering design construction work startup and maintenance of Fieldbus refer to Fieldbus Technical Information http www yokogawa com fieldbus tutorial html 3 2 Internal Structure of EXA The EXA contains two virtual field devices VFD that share the following functions 3 2 1 System network Management VFD Sets node addresses and Phisical Device tags PD Tag necessary for communication Controls the execution of function blocks Manages operation parameters and communication resources Virtual Communication Relationship VCR 3 2 2 Function Block VFD 1 Resource block Manages the status of EXA hardware Automatically informs
67. error description EXA dev_alarm resource block transducer block display BLOCK ERR BLOCK ERR XD ERROR PV status SV status conductivity exceeds E5 0x80000000 INPUT_FAILURE MECHANICAL BAD SENS high limit ERR FAILURE FAIL conductivity exceeds E6 0x40000000 INPUT_FAILURE MECHANICAL BAD SENS low limit ERR FAILURE FAIL temperature sensor E7 0x20000000 INPUT FAILURE MECHANICAL BAD SENS BAD SENS open ERR FAILURE FAIL FAIL temperature sensor E8 0x10000000 INPUT FAILURE MECHANICAL BAD SENS BAD SENS shorted ERR FAILURE FAIL FAIL temperature E2 0x08000000 BAD NON compensation error SPECIFIC polarization detected El 0x04000000 INPUT_FAILURE BAD NON_ ERR SPECIFIC conductivity exceeds E13 0x02000000 BAD NON_ usp limit SPECIFIC concentration table E18 0x01000000 BAD CONFIG error ERR matrix error E4 0x00800000 BAD CONFIG ERR not used 0x00400000 not used 0x00200000 not used 0x00100000 not used 0x00080000 not used 0x00040000 mismatch between FF 0x00020000 NEEDS MAINT ELECTRONICS BAD DEV BAD DEV interface and EXA NOW_ERR _FAIL parameter FAILURE EXA eeprom failure E20 0x00010000 NEEDS MAINT DATA_INTEGRITY BAD DEV BAD DEV NOW_ERR ERROR FAIL FAIL FF interface eeprom 0x00008000 LOST STATIC NEEDS MAINT DATA INTEGRITY BAD DEV BAD DEV failure _ERR LOST_ NOW_ERR _ERROR _FAIL _FAIL NV_ERR Hart
68. ess YES Set the value ERE Il ip d using the gt ENT key Lf 7 D n No ax L Li Q Select the flashing digit with the gt key AL I Increase its value by pressing the akey When the correct value is displayed press ENT to enter the change cl 1 1 uS cm After briefing displaying WAIT o A l x N the CAL END message appears CALE JI The calibration is now complete Put the sensor back in the process and press YES The cell constant is automatically updated after the calibration and the new value can be read on the display as described in section 4 5 The calculation is as follows Cell constant in cm Conductivity of calibration solution in mS cm x Cell resistance in kOhm Comparing this calibrated cell constant with the initial nominal cell constant in service code 03 gives a good indication of the stability of the sensor If the calibrated cell constant differs more than 20 from the nominal cell constant error E3 is displayed IM 12D7B3 02E H 7 1 7 Maintenance 7 1 Periodic maintenance for the EXA 202 converter The EXA transmitter requires very little periodic maintenance The housing is sealed to IP65 NEMA 4X standards and remains closed in normal operation Users are required only to make sure the front window is kept clean in order to permit a clear view of the display and allow proper operation of the pushbuttons If the window becomes soiled c
69. except for the first VCR which is used for management EXA has VCRs of 3 types Publisher Subscriber VCR Publisher Subscriber VCR s are designed to link Function Blocks When a publishing Function Block runs its output data is stored in the buffer of the Publisher VCR Then the LAS LM sends a CD to this VCR to force it to transfer the data Subscriber VCRs receive this data and gives this to the subscribing Function Blocks Typical example is a linkage from an output of an Analog Input Al block to the process value input of the PID control block Publisher Subscriber model is one to many one way Communication Subscribers are able to know whether data is updated since the last publish This mechanism is important because Data Link Layer transfers data as scheduled regardless the publishing Function Block updates the data in the buffer Client Server Model Client Server model is universal and used in many communication technologies An application called Client requests another application called Server to do a specific action When the Server finishes the requested action its result is transferred back to the Client It is an one to one two way communication Typical example is a human machine interface Client to read data of a Function Block Server The Client sends a Read request to the Server and then the Server sends back the data to the Client This communication is unscheduled and is handled during the unsche
70. for each parameter may cause inconsistent operation Table 5 4 VCR Static Entry 5 5 Sub index 1 Parameter FasArTypeAndRole Description Indicates the type and role of communication VCR The following 3 types are used for EXA 0x32 Server Responds to requests from host 0x44 Source Transmits alarm or trend 0x66 Publisher Sends AI block output to other blocks FasDllLocalAddr Sets the local address to specify VCR in EXA A range of 0x20 to 0xF7 in hexadecimal FasDIIC onfigured RemoteAddr Sets the node address of the called party for communication and the address DLSAP or DLCEP used to specify VCR in that address For DLSAP or DLCEP a range of 0x20 to OxF7 in hexadecimal is used Addresses in Subindex 2 and 3 need to be set to the same contents of the VCR as the called party local and remote are reversed FasDIIS DAP Specifies the quality of communication Usually one of the following types is set 0x2B Server 0x01 Source Alert 0x03 Source Trend 0x91 Publisher FasDIIM axC onfirm DelayOnConnect To establish connection for communication a maximum wait time for the called party s response is set in ms Typical value is 60 seconds 60000 FasDIIM axC onfirm DelayOnData For request of data a maximum wait time for the called party s response is set in ms Typical value is 60 seconds 60000 FasDIIMaxDlsduSize Specifies maximum DL
71. g error This error is R AO x100 2x Rcel where Rv the resistance of the fouling layer Rcel the cell resistance note Resistance due to fouling or to polarization does not effect the accuracy and operation of a 4 electrode conductivity measuring system If an apparent increase in cell constant occurs cleaning the cell will restore accurate measurement Cleaning methods 1 For normal applications hot water with domestic washing up liquid added will be effective 2 For lime hydroxides etc a 5 10 solution of hydrochloric acid is recommended 3 Organic foulings oils fats etc can be easily removed with acetone 4 For algae bacteria or moulds use a solution of domestic bleach hypochlorite Never use hydrochloric acid and bleaching liquid simultaneously The very poisonous chlorine gas will result IM 12D7B3 02E H 7 2 IM 12D7B3 02E H 8 1 8 Troubleshooting The EXA SC202 is a microprocessor based analyzer that performs continuous self diagnostics to verify that it is working correctly Error messages resulting from faults in the microprocessor systems itself are few Incorrect programming by the user can be corrected according to the limits set in the following text In addition the EXA SC202 also checks the sensor to establish whether it is still functioning within specified limits What follows is a brief outline of some of the EXA SC202 troubleshooting procedures followed by a detailed table
72. gements to purchase the recommended equipment Connect the devices as shown in Figure 4 1 Connect the terminators at both ends of the trunk with a minimum length of the spur laid for connection The polarity of signal and power must be maintained Power supply Terminator Terminator Figure 4 1 Cabling A NOTE Before using a Fieldbus configuration tool other than the existing host confirm it does not affect the loop functionality in which all devices are already installed in operation Disconnect the relevant control loop from the bus if necessary A IMPORTANT Connecting a Fieldbus configuration tool to a loop with its existing host may cause communication data scrambles resulting in a functional disorder or a system failure IM 12D7B3 02E H 4 2 4 2 Host Setting To activate Fieldbus the following settings are required for the host A IMPORTANT Do not turn off the power immediately after setting When the parameters are saved to the EEPROM the redundant processing is executed for an improvement of reliability If the power is turned off within 60 seconds after setting is made the modified parameters are not saved and the settings may return to the original values Table 4 1 Operation Parameters Symbol Parameter Description and Settings V ST Slot Time Set 4 or greater value V MID Minimum Inter P DU Set 4 or greater value Delay V MRD Maximum Reply Se
73. hich describes how to use the EXA 4 3 IM 12D7B3 02E H 4 4 IM 12D7B3 02E H 5 CONFIGURATION This chapter contains information on how to adapt the function and performance of the EXA to suit specific applications Because two or more devices are connected to Fieldbus settings including the requirements of all devices need to be determined Practically the following steps must be taken 1 Network design Determines the devices to be connected to Fieldbus and checks the capacity of the power supply 2 Network definition Determines the tag and node addresses for all devices 3 Definition of combining function blocks Determines the method for combination between each function block 4 Setting tags and addresses Sets the PD Tag and node addresses one by one for each device 5 Communication setting Sets the link between communication parameters and function blocks 6 Block setting Sets the parameters for function blocks The following section describes each step of the procedure in the order given Using a dedicated configuration tool allows the procedure to be signifi cantly simplified This section describes the procedure to be assigned for a host which has relatively simple functions 5 1 Network Design Select the devices to be connected to the Fieldbus network The following instruments are necessary for operation of Fieldbus Power supply Fieldbus requires a dedicated power supply It i
74. ice Code 52 to obtain access to the Service Mode note See Service Code 52 for the setting of passcodes 4 4 Display examples The following pages show the sequence of button presses and screens displayed when working in some standard configurations More or less options will be made available by the configuration of some service codes or by choices made in the commissioning menu The following deviations are possible Item marked is omitted when switched off in commissioning mode xk Temperature compensation will be displayed dependent on chosen compensation method NaCl TC or matrix xk DISP 2 only appears if a 2nd different temperature compensation is set de W W only appears if switched on in service code 55 In display 2 w w never appears IM 12D7B3 02E H 4 4 Sequence for resistivity function is similar to this conductivity example Actual cell constant ER LICI ILL uS cm lt rt 4 IAA nm gt LLY IVIVI lt Reference VY NO LI LI d temperature UO 1 LiL
75. ich the user may select in the block Forward processing of status 15 CHANNEL All 1 0 S The number of the logical hardware channel that is Al2 2 connected to this I O block This information defines the transducer to be used going to or from the physical world 16 L_TYPE Specified atthe MAN Deterines if the values passed by the transducer time of order block to the Al block may be used directly Direct or if the value is in different units and must be converted linearly Indirect or with square root Ind Sqr Root using the input range defined by the transducer and the associated output range 17 LOW_CUT Linear 0 AUTO Limit used in square root processing A value of Square root 10 zero percent of scale is used in block processing if the transducer value falls below this limit in of scale This feature may be used to eliminate noise near zero for a flow sensor 18 PV_FTIME 2sec AUTO Time constant of a single exponential filter for the PV in seconds 19 FIELD VAL E Raw value of the field device in percent of thePV range with a status reflecting the Transducer condition before signal characterization L_TYPE or filtering PV_FTIME 20 UPDATE EVT 7 This alert is generated by any change to the static data 21 BLOCK_ALM The block alarm is used for all configuration hardware connection failure or system problems in the block The cause of the alert is entered in the subcode field The first alert to become active will set the
76. ission communication protocol It is recommended that novice users use field devices in accordance with the procedures described in this section The procedures assume that field devices will be set up on a bench or an instrument shop 4 1 Connection of Devices The following instruments are required for use with Fieldbus devices Power supply Fieldbus requires a dedicated power supply It is recommended that current capacity be well over the total value of the maximum current consumed by all devices including the host Conventional DC current cannot be used as is Terminator Fieldbus requires two terminators Refer to the supplier for details of terminators that are attached to the host Field devices Connect EXA Fieldbus communication type Two or more EXA devices or other devices can be connected Host Used for accessing field devices A dedicated host such as DCS is used for an instrumentation line while dedicated communication tools are used for experimental purposes For operation of the host refer to the instruction manual for each host No details of the host are explained in the rest of this material Cable Used for connecting devices Refer to Fieldbus Technical Information TI 38K3A01 01E for details of instrumentation cabling Fieldbus uses twisted pair wires To meet the Electro Magnetic Interference standards a shielded twisted pair is obligated 4 1 Refer to Yokogawa when making arran
77. istor resistor decade box 1 to simulate the temperate element All tests are performed simulating 25 C 77 F 2 A second variable resistor box 2 to simulate the conductivity Recommended is a resistor decade box in steps of 1 W between 2 W and 1200 kW accuracy 0 1 3 A fixed resistor of 300 W to simulate the mA output load 4 Screened cable to connect the input signals a WU20 cable with a length of 2 metres is preferred 5 A stabilised voltage supply unit nominal 24 Volt DC 6 A current meter for DC currents up to 25 mA resolution 1uA accuracy 0 1 Connect the C202 as shown in Figure 1 Set box 1 to simulate 25 9C 1097 3 W for PT1000 30 kW for NTC Before starting the actual test the SC202 and peripheral testing equipment has to be connected to the power supply for at least 5 minutes to assure the instrument is warmed up properly EXA ISC 202 E LR a 7 A 300 y f 12 mA Fixed I i meter Resistance Box 1 temperature Resistance box Electrode cabel 13 Supply note 24 VDC 1 ISC 40 Box 2 conductivity gt o Resistance box Figure 1 Connection diagram for the overall accurac y test 4 2 The tolerances specified relate to the performance of the SC202 with calibrated purpose built test equipment under controlled test conditio
78. le of Publish the function that transmits the indication on a periodic basis 4 7 Generation of Alarm If the host is allowed to receive alarms generation of an alarm can be attempted from EXA In this case set the reception of alarms on the host side EXA s VCR 7 is factory set for this purpose For practical purposes all alarms are placed ina disabled status for this reason it is recommended that you first use one of these alarms on a trial basis Set the value of link object 3 index 30002 as 0 299 0 6 0 Refer to section 5 6 1 Link Object for details Since the LO PRI parameter index 4029 of the All block is set to 0 try setting this value to 3 Select the Write function from the host in operation specify an index or variable name and write 3 to it The LO LIM parameter index 4030 of the All block determines the limit at which the lower bound alarm for the process value is given In usual cases a very small value is set to this limit Set a value higher than the current process value a lower bound alarm is raised Check that the alarm can be received at the host When the alarm is confirmed transmission of the alarm is suspended The above mentioned items are a description of the simple procedure to be carried out until EXA is con nected to Fieldbus In order to take full advantage of the performance and functionality of the device it is recommended that it be read together with Chapter 5 w
79. lean it using a soft damp cloth or soft tissue To deal with more stubborn stains a neutral detergent may be used note Never used harsh chemicals or solvents In the event that the window becomes heavily stained or scratched refer to the parts list Chapter 10 for replacement part numbers When you must open the front cover and or glands make sure that the seals are clean and correctly fitted when the unit is reassembled in order to maintain the housing s weatherproof integrity against water and water vapour The measurement otherwise may be prone to problems caused by exposure of the circuitry to condensation see page 10 1 The EXA instrument contains a lithium cell to support the clock function when the power is switched off This cell needs to be replaced at 5 yearly intervals or when discharged Contact your nearest Yokogawa service centre for spare parts and instructions 7 2 Periodic maintenance of the sensor note Maintenance advice listed here is intentionally general in nature Sensor maintenance is highly application specific In general conductivity resistivity measurements do not need much periodic maintenance If the EXA indicates an error in the measurement or in the calibration some action may be needed ref chapter 8 trouble shooting In case the sensor has become fouled an insulating layer may be formed on the surface of the electrodes and consequently an apparent increase in cell constant may occur giving a measurin
80. lue 4 Setting the damping time constant Access the PV_FTIME parameter Set the damping time in seconds 5 Simulation By optionally setting the input value to the calibra tion range and status perform simulation of the Al function block Access the Simulate Value parameter Set an optional input value Y Access the Simulate Status parameter Set the status code Access the Simulate En Disable parameter Set whether Simulation is enabled or disabled 2 Enabled 1 Disabled If simulation is enabled Al block uses Simulate Status and Simulate Value as the input and if disabled the Al block uses Transducer Status and Transducer Value as input Refer to Section 6 3 Simulation Function A2 4 Setting the AI2 Function Block The AI2 function block outputs the temperature 1 Setting the temperature information The channel of AI2 function block is default set to channel 2 This channel represents the temperature value in C units or F The XD SCALE unit should be set accordingly The range of the channel is 20 to 140 C 20 to 280 F Handling of scaling and mode parameters of the block is the same as All A2 5 Setting the AI3 Function Block The AI3 function block outputs conductivity resistivity that is compensated to the second compensation method 1 Setting the information The channel of AI3 function block is set default to channel 3 This channel represen
81. lue The 0 and 100 table values are set here to be used in the concentration table of service code 35 The 19 intermediate values are calculated and set according evenly distribution The display resolution is default set to autoranging for conductivity reading If a fixed display reading is needed a choice can be made out of 7 possibilities For resistivity the default reading is fixed to xx xx MQ cm Automatic checking for compliance with the water purity standard set in USP United States Pharmacopeia For more detailed description see chapter 9 Erase logbook function to clear the recorded data for a fresh start This may be desirable when re commissioning an instrument that has been out of service for a while The load defaults code allows the instrument to be set to the default factory setting with a single operation This can be useful when wanting to change from one application to another 5 15 Code Display Function Function detail X Default values User interface 50 RET Auto return Auto return to measuring mode Off Auto return to measuring mode On 1 On 51 Not used 52 PASS Passcode Maintenance passcode Off 0 0 0 0 Off Note 0 9 where Maintenance passcode On Commissioning passcode Off Off 1 111 2 333 3 777 Commissioning passcode On 4 888 5 123 6 957 Service passcode Off Off 7 331 8 54
82. mance 0x00 Not used 0x10 LM device V FUN gt Unused V NUN V FUN V NUN gt EXA 0xF5 BASIC device xE7 OxF8 OxFB Default address OxFC Portable device address OxFF Note 1 LM device with bus control function Link Master function Note 2 BASIC device without bus control function Figure 5 1 Available Range of Node Addresses To ensure stable operation of Fieldbus determine the operation parameters and set them to the LM devices While the parameters in Table 5 2 are to be set the worst case values of all the devices to be connected to the same Fieldbus must be used Refer to the specification of each device for details Table 5 2 lists EXA specification values IM 12D7B3 02E H Table 5 2 Operation Parameter Values of the EXA to be Set to LM Devices Symbol Parameters Description and Settings V ST Slot Time Indicates the time necessary for immediate reply of the device Unit of time is in octets 256 us Set maximum specification for all devices For EXA set a value of 4 or greater V MID Minimum Inter P DU Minimum value of Delay communication data intervals Unit of time is in octets 256 us Set the maximum specification for all devices For EXA set a value of 4 or greater Maximum R eply The worst case time Delay elapsed until a reply is recorded The unit is Slot time set the value so that V MRD 3V ST is the maximum value of the
83. mode is changed by setting the target mode When the resource block mode is set to OOS all function blocks in the VFD are set to OOS mode CHANNEL Transducer blocks convert raw signals into process values The values are assigned to channels For the EXA 202 SC three channels are available 1 Conductivity Resistivity 2 Temperature 3 Second Conductivity Resistivity 4 Concentration XD SCALE OUT SCALE Scaling information is used for two purposes Display devices need to know the range for bar graphs and trending as well as the units code Control blocks need to know the range to use internally as percent of span so that the tuning constants may remain dimensionless This is converted back to a number with units by using the range of OUT SCALE The AI block has the parameter XD SCALE to define the units expected from the transducer Transducer scaling XD SCALE is applied to the value from the channel to produce the FIELD VAL in percent The XD SCALE units code must match the channel units code if one exists or the block will remain in O S mode after being configured A block alarm for units mismatch will be generated If L TYPE is set to Indirect or Ind Sqr Root OUT SCALE determines the conversion from FIELD VAL to the output PV and OUT always have identical scaling OUT SCALE provides scaling for PV The PV is always the value that the block will place in OUT if the mode is Auto IM 12D7B3 02E H 5 10
84. n example of an adjustable item is the type of temperature sensor used The EXA can be adjusted for any one of five different types of temperature sensors To record such configuration adjustments write changes in the space provided in Chapter 11 of this manual Because the EXA is suitable for use as a monitor a controller or an alarm instrument program configuration possibilities are numerous Details provided in this user s manual are sufficient to operate the EXA with all Yokogawa sensor systems and a wide range of third party commercially available probes For best results read this manual in conjunction with the corresponding sensor user s manual Yokogawa designed and built the EXA to meet the CE regulatory standards The unit meets or exceeds stringent requirements of EN 61000 6 2 Immunity EN55022 Class A Emission without compromise to assure the user of continued accurate performance in even the most demanding industrial installations IM 12D7B3 02E H 2 GENERAL SPECIFICATIONS 2 1 2 1 Specifications A Input specifications Detection method Input ranges Conductivity Minimum Maximum Resistivity Minimum Maximum Temperature Pt1000 Pt100 and Ni100 8K55 NTC Pb36 NTC Output Span Conductivity Resistivity Temperature Sensor type Pt1000 Pt100 Ni100 Pb36 8K55 NTC 20 to 250 C 20 to 200 C 10 to 120 C 20 to 120 C Two or four electrodes measurem
85. n this way See table 4 1 LEVEL 2 Commissioning A second menu is exposed when the EXA front cover is removed and the display board is revealed Users gain access to this menu by pressing the button marked in the lower right of the display board This menu is used to set the temperature compensation method It also gives access to the service menu See table 4 1 LEVEL 3 Service For more advanced configuration selections press the button marked then press NO repeatedly until you reach SERV service Now push the Yes button Selecting and entering Service Code numbers in the commissioning menu provide access to the more advanced functions An explanation of the Service Codes is listed in chapter 5 and an overview table is shown in chapter 11 Table 4 1 Operations overview Routine Function Chapter Maintenance CALIB Calibration with a standard solution or sample 6 DISPLAY 1 amp 2 Read auxiliary data or set message display 4 Commissioning TEMP 1 amp 2 Select method of temperature compensation 5 Service SERVICE Fine tune the specialized functions of the 5 Access to coded entries analyser from the commissioning level note All three levels may be separately protected by a password See Service Code 52 in chapter 5 Service Code table for details on setting passwords IM 12D7B3 02E H 4 2 Fail flag Units Menu pointer flags Main display Commissioning function menu
86. nditions are met only standard sensor cables or extension cable are used the transmitter is mounted within the distance of the sensor cables max 10 m cable the sensor cables are not mounted in tracks together with high voltage and or power switching cables up to 20m WF10 extension the setup is kept flexible for easy insertion and retraction of the sensors in the fitting 12 p SS 15 11 white brown green yellow grey pink 16 Fig 3 7 Connection diagrams 3 4 Sensor wiring Refer to figure 3 9 which includes drawings that outline sensor wiring The EXA SC202 can be used with a wide range of commercially available sensor types if provided with shielded cables both from Yokogawa and other manufacturers The sensor systems from Yokogawa fall into two categories the ones that use fixed cables and the ones with separate cables To connect sensors with fixed cables simply match the terminal numbers in the instrument with the identification numbers on the cable ends The separate sensors and the WU40 LH cables are also numbered but the numbers do not always match with the terminal numbers in the instrument Figure 3 9 indicates how to connect the different sensor types CONDUCTIVITY RESISTIVITY TRANSMITTER BROWN 0 11 TEMPERATURE 12 TEMPERATURE BROWN 13 OUTER ELECTRODE 14 OUTER ELECTRODE 9 2 YELLOW GREEN O 15 IN
87. necessary requirement However if it is not possible to choose one temperature response model to work to then it is also not possible to choose one temperature compensation algorithm We as a manufacturer of analytical equipment do not want to go into the details of whether the limiting conductivity values for water quality are based on the Chloride model or the Ammonia model Our job is to develop on line analyzers that make it simple for our customers to meet the water quality that is specified as stage 1 Conductivity Limit as a Function of Temperature If the water exceeds the limits of stage 1 then it can still be acceptable but requires the customer to proceed to Stage 2 and possibly Stage 3 to validate the water quality It is our objective to assure that our customers do not exceed the limits in stage 1 to avoid them having to carry out the complicated laboratory checks in Stages 2 and 3 7 3 USP in the SC 202 In SC202 we have defined an Error Code E13 This is independent of what range the customer is measuring or what temperature compensation method he is using for water quality monitoring When the display shows E13 then the water quality exceeds the USP limits and the FAIL flag on the display is activated to signal that the system needs urgent attention 2 We have introduced uncompensated conductivity in the DISPLAY menu In the LCD display the user can read the temperature and the raw conductivity to compare his water qu
88. ns humidity ambient temperature Note that these accuracy s are only reproducible when performed with similar test equipment under similar test conditions Under other conditions the accuracy and linearity of the test equipment will be different The display may show values which differ as much as 1 from those measured under controlled conditions Accuracy test mA output circuit Our automated testing facility checks the output accuracy of the instrument with simulated mA output values IM 12D7B3 02E H TABLE OF CONTENTS L INTRODUCTION iri e Pete pde oe rb UO Ped 1 1 2 SAFETY PRECAUTIONS uh aeter ai 2 1 3 ABOUT FIEEDBUS tone alcoi 3 1 3 1 Outlines ee a te ete iuf 3 1 3 2 Internal structure otEXA 22 ee edet eser ce Rx RR eie E REDE 3 1 3 2 1 System Network management VFD sess eee emen 3 1 3 2 2 Function block VFD ii iii lei 3 1 3 3 Logical structure of each DIOCK i 3 1 3 4 Wiring System Configuration ui 3 1 4 GETTING STARTED ne Ee d e ea C a ett alia 4 1 4 1 Connection Of devices cocoa necne e eee dee te Rt diene Ne 4 1 A A th o Rei phus ene RE eO tr uaa aaa ae te ri en dee 4 2 4 3 O innerer eilig a 4 2 4 4 Integration DD tee d et ii a 4 2 4 5 Reading the parameters i 4 3 4 6 Continuous record of values ei ee teen ener nennen nns 4 3 A 7 Generation Of alarm te ret a ete nese ela regie de eas 4 3 5
89. nsferred back to this state after a tag or address is changed UNINITIALIZED No tag nor address is set Tag clear Tag setting INITIALIZED Only tag is set Address clear Address setting SM_OPERATIONAL Tag and address are retained and the function block can be executed Figure 5 4 Status Transition by Setting PD Tag and Node Address EXA has a PD Tag PH1001 and node address 245 or hexadecimal F5 that are set upon shipment from the factory unless otherwise specified To change only the node address clear the address once and then set a new node address To set the PD Tag first clear the node address and clear the PD Tag then set the PD Tag and node address again Devices whose node address was cleared will await the default address randomly chosen from a range of 248 to 251 or from hexadecimal F8 to FB At the same time it is necessary to specify the device ID in order to correctly specify the device The device ID of the EXA is 5945430831xxxxxxxx The xxxxxxxx at the end of the above device ID is a total of 8 alphanumeric characters IM 12D7B3 02E H 5 5 Communication Setting To set the communication function it is necessary to change the database residing in SM VFD 5 5 1 VCR Setting Set VCR Virtual Communication Relationship which specifies the called party for communication and resources EXA has 10 VCRs whose application can be changed
90. ocate PD Tag and node addresses to all devices excluding such passive devices as terminators The PD Tag is the same as the conventional one used for the device Up to 32 alphanumeric characters may be used for definition Use a hyphen as a delimiter as required The node address is used to specify devices for communication purposes Because data is too long for a PD Tag the host uses the node address in place of the PD Tag for communication A range of 16 to 247 or hexadecimal 0x10 to OxF7 can be set IM 12D7B3 02E H 5 2 Addresses of devices with Link Master capabilities are set in a low address range smaller than V FUN Addresses of basic devices are set in a higher range bigger than V FUN V NUN Specify the adress range used by setting the following two parameters in the LM device Table 5 1 Parameters for Setting Address Range Symbol Parameters Description V FUN First Unpolled Node Indicates the address next to the address range used for the host or other LM device Unused address range V NUN Number of consecutive Unpolled Nodes The devices within the address range written as Unused in Figure 5 1 cannot be used on a Fieldbus For other address ranges the range is periodically checked to identify when a new device is connected Care must be taken not to allow the address range to become wider which can lead to exhaustive consumption of Fieldbus communication perfor
91. of other conductivity resistivity sensors Code 11 T UNIT Celsius or Fahrenheit temperature scales can be selected to suit the user s preference Code12 T ADJ The calibration is a zero adjustment to allow for the cable resistance which will obviously vary with length The normal method is to immerse the sensor in a vessel with water in it measure the temperature with an accurate thermometer and adjust the reading for agreement IM 12D7B3 02E H Code Display Function Function detail X Default values Parameter specific functions 01 SC RES Select main parameter Conductivity 0 0 Cond Resistivity 1 02 4 ELEC Select 2 4 el system 2 Electrode measurement system 0 0 2 El 4 Electrode measurement system 1 03 0 10xC Set cell constant Press NO to step through choice of 0 100 cm 1 multiplying factors on the second display 0 10xC 1 00xC 0 10xC 10 0xC 100 xC 0 01xC Press YES to select a factor Use ENT keys to adjust MAIN digits 1 000 04 AIR Zero calibration Zero calibration with dry cell connected START Press YES to confirm selection WAIT Press YES to start after briefly displaying END WAIT END will be displayed Press YES to return to commissioning mode 05 POL CK Polarization check Polarization check off 0 1 On Polarization check on 1 06 09 Not used Code Display Function Function detail X Default values Temperature measuring functions 10 T SE
92. on block outputs the conductivity signals 1 Setting the calibration range The channel 1 associated with the conductivity resistivity value has a range of 0 to 1 999 S cm By default the 096 Lower range limit and the 10096 Upper range limit are set accordingly The unit is default set to S cm The unit should be changed to O cm by changing from conductivity to resistivity mode Select the correct unit or the block will remain in 0 S mode A block alarm for units mismatch will be generated 2 Setting the output scale As explained in section 5 6 4 the OUT SCALE can used to convert the channel s value to a different scale e g mV converted to V or C converted to F If the channel s unit XD SCALE unit is the same as the output unit DO NOT use scaling or let the OUT SCALE have the same scaling as XD SCALE If LL TYPE is set to Indirect or Ind Sqr Root OUT SCALE determines the conversion from FIELD VAL to the output PV and OUT always have identical scaling OUT SCALE provides scaling for PV The PV is always the value that the block will place in OUT if the mode is Auto For All set L TYPE to Direct With the EXA the channel values are displayed on the display indicator independant of the scaling in the Al blocks 3 Setting the output mode Access the L_TYPE parameter Set the output mode 1 Direct Sensor output value 2 Indirect Linear output value 3 IndirectSQRT Square root extraction output va
93. on which if not avoided could result in death or serious injury A CAUTION Indicates a potentially hazardous situation which if not avoided may result in minor or moderate injury It may also be used to alert against unsafe practices A IMPORTANT Indicates that operating the hardware or software in this manner may damage it or lead to system failure A NOTE Draws attention to information essential for understanding the operation and features MA WARNING Instrument installed in the process is under pressure Never loosen or tighten the process connector bolts as it may cause dangerous spouting of process fluid During draining condensate or venting gas in transmitter pressure detector section take appropriate care to avoid contact with the skin eyes or body or inhalation of vapors if the accumulated process fluid may be toxic or otherwise harmful Since draining condensate or bleeding off gas gives the pressure measurement distur bance this should not be done when the loop is in operation e If the accumulated process fluid may be toxic or otherwise harmful take appropriate care to avoid contact with the body or inhalation of vapors even after dismounting the instrument from process line for maintenance A CAUTION This instrument is tested and certified as intrinsically safe type or explosionproof type Please note that the construction of the instrument installation external wiring maintenance or r
94. or high alarm and its associated time stamp 35 LO ALM The status of the low alarm and its associated time stamp 36 LO LO ALM The status of the low low alarm and its associated time stamp A1 3 TRANSDUCER BLOCK Index PARAMETERS NAME Default Valid Range Description 2000 BLOCK HEADER TAG TB General information about thefunction block 2001 ST REV The revision level of the static data associated with the function block The revision value will be incremented each time a static parameter value in the block is changed 2002 TAG_DESC i The user description of the intended application of the block 2003 STRATEGY 0 The strategy field can be used to identify grouping of blocks This data is not checked or processed by the block 2004 ALERT KEY 1 The identification number of the plant unit This information may be used in the host for sorting alarms etc 2005 MODE BLK AUT MODE The actual target permitted and normal modes of the block 2006 BLOCK ERR This parameter reflects the error status associated with a block It is a bit string so that multiple errors can be shown 2007 UPDATE_EVT The alert is generated by any change to the static data 2008 BLOCK_ALM The block alarm is used for all configuration error hardware connection failure or system problems in the block The cause of the alert is entered in the subcode field The first alert to become active will set Active status in Status attribute 2
95. or status associated with the hardware or software components associated with a block It is a bit string so that multiple errors may be shown 7 PV Either the primary analog value for use in executing the function or a process value associated with it May also be calculated from the READBACK value of an AO block 8 OUT Value The primary analog value calculated as a result of MAN executing the function 9 SIMULATE Disable AUTO Allows the transducer analog input or output to the block to be manually supplied when simulate is enabled When simulation is disabled the simulate value and status track the actual value and status 10 XD_SCALE Specified atthe 0 S The high and low scale values engineering units time of order code and number of digits to the right of the decimal point used with the value obtained from the transducer for a specified channel Refer to Table 5 15 for the unit available 11 OUT_SCALE Specified atthe 0 S The high and low scale values engineering units time of order code and number of digits to the right of the decimal point to be used in displaying the OUT parameter and parameters which have the same scaling as OUT 12 GRANT_DENY 0 AUTO Options for controlling access of host computers and local control panels to operating tuning and alarm parameters of the block 13 lO OPTS 0 0 S Options which the user may select to alter input and output block processing 14 STATUS OPTS Propagate Fault 0 S Options wh
96. ple of the process liquid to be measured Heat or cool this sample to the reference temperature of the converter usually 25 C Measure the conductivity of the sample with the EXA and note the value Bring the sample to the typical process temperature to be measured with the EXA Adjust the display indication to the noted value at the reference temperature Check that the temperature compensation factor has been changed Insert the conductivity cell into the process again Y NM UU E UN E Other possibilities section 5 4 Enter calculated coefficient Enter matrix temperature compensation NEB IM 12D7B3 02E H 5 3 IM 12D7B3 02E H 5 4 5 2 3 Temperature compensation selection OUTPUT After briefly displaying WAIT it will be possible to adjust the display reading to the correct value using ENT reference keys ves YES YES NO YES LI Ll so LL KOTE Timo or Sit KMAT RX Pene TEMP 1 ifi NO YES TEMP 2 IM 12D7B3 02E H 5 2 4 Service code The figure below shows a typical button sequence to change a setting within the service menu The specific settings are listed in numerical sequenc
97. rsely affected Watchdog timer Cast aluminium case with chemically resistant coating cover with flexible polycarbonate window Case color is off white and cover is moss green Cable entry is via two 1 2 polyamide glands Cable terminals are provided for up to 2 5 mm2 finished wires Weather resistant to IP65 and NEMA 4X standards Pipe wall or panel mounting using optional hardware G Data protection EEPROM for configuration and logbook and lithium battery for clock Checks microprocessor Automatic safeguard Return to measuring mode when no keystroke is made for 10 min Drift lt 500 ppm C C Storage temperature 30 to 70 oC 20 to 160 F D Humidity 10 to 9096 RH non condensing E FF specification Twisted 2 wire with shield Operation protection 3 digit programmable password Regulatory compliance EMC meets council directive 89 336 EEC Emmission meets EN 55022 Class A Immunity meets EN 61000 6 2 DD specification 2 3 Model and suffix codes Suffix code Model code SC202G SC202S Description Inductive Conductivity Transmitter General Purpose version Inductive Conductivity Transmitter Intrinsic Safe version Mill amp HART version FOUNDATION Fieldbus version Non Incendive Mill amp HART version Non Incendive FOUNDATION Fieldbus version Always E Options IM 12D7B3 02E H
98. s recommended that current capacity be well over the total value of the maximum current consumed by all devices including the host Conventional DC current cannot be used as is A power conditioner is reguired 5 1 Terminator Fieldbus requires two terminators Refer to the supplier for details of terminators that are attached to the host Field devices Connect the field devices necessary for instrumentation EXA has passed the interoperability test conducted by The Fieldbus Foundation In order to properly start Fieldbus it is recommended that the devices used satisfy the requirements of the above test Host Used for accessing field devices A minimum of one device with bus control function is needed Cable Used for connecting devices Refer to Fieldbus Technical Information for details of instrumenta tion cabling Provide a cable sufficiently long to connect all devices For field branch cabling use terminal boards or a connection box as required First check the capacity of the power supply The power supply capacity must be greater than the sum of the maximum current consumed by all devices to be connected to Fieldbus The maximum current consumed power supply voltage 9 V to 32 V for EXA is 23 mA The cable must have the spur in a minimum length with terminators installed at both ends of the trunk 5 2 Network Definition Before connection of devices with Fieldbus define the Fieldbus network All
99. s and cable E8 Temperature sensor shorted Pt1000 Pt100 Ni100 T lt 20 C or 0 F 8k55 PB36 T gt 120 C or 250 F Process temperature too high or too low Wrong sensor programmed Incorrect wiring Check process Check model code sensor Check connections and cable E9 Air set impossible Too high zero due to cable capacitance Replace cable E10 EEPROM write failure Fault in electronics Try again if unsuccessful contact Yokogawa E13 USP limit exceeded Poor water quality Check ion exchangers E15 Cable resistance influence to temperature Cable resistance too high Check cable exceeds 15 C Corroded contacts Clean and reterminate Wrong sensor programmed Reprogram E18 Table values make no sense Wrong data programmed Reprogram E19 Programmed values outside acceptable limits Incorrect configuration by user Reprogram E20 All programmed data lost Fault in electronics Contact Yokogawa Very severe interference E21 Checksum error Software problem Contact Yokogawa IM 12D7B3 02E H 11 7 IM 12D7B3 02E H 12 1 12 Test Certificate Zr Test EXA Series Certificate Model SC 202 Inductive Conductivity Transmitter 1 Introduction This inspection procedure applies to the model SC202 Conductivity converter There is a serial number unique to the instrument which is stored in non volatile memory Each time the converter is powered up the serial number is shown in the
100. sic parameterSs eee 9 2 A 2 3 Setting the All function block ii 9 2 A 2 4 Setting the AI2 function block sssssseeenennennnenn eene nennen enne 9 3 A 2 5 Setting the AI3 function block i 9 3 A 2 6 Setting the transducer block nennen nennen nnne nnns 9 3 APPENDIX 3 OPERATION OF EACH PARAMETER IN FAILURE MODE 10 1 IM 12D7B3 02E H 1 INTRODUCTION The second part of this manual describes only those topics that are required for operation of the fieldbus communications 1 1 IM 12D7B3 02E H 1 2 IM 12D7B3 02E H 2 1 2 Safety Precautions For the protection and safety of the operator and the instrument or the system including the instrument please be sure to follow the instructions on safety described in this manual when handling this instrument In case the instrument is handled in contradiction to these instructions Yokogawa does not guarantee safety For the intrinsically safe equipment and explosionproof equipment in case the instrument is not restored to its original condition after any repair or modification undertaken by the customer intrinsically safe construction or explosionproof construction is damaged and may cause dangerous condition Please contact Yokogawa for any repair or modification required to the instrument The following safety symbol marks are used in this Manual A WARNING Indicates a potentially hazardous situati
101. signal from the cell to search for distortion which is typical of capacitive or polarization errors If the difference between pulse front and pulse rear is gt 2096 an error El will be displayed and the FAIL flag in the display is activated In service code 05 it is possible to turn this check on and off IM 12D7B3 02E H 8 2 IM 12D7B3 02E H 9 1 9 USP WATER PURITY MONITORING 9 1 Whatis USP USP stands for United States Pharmacopeia and it is responsible for issuing guidelines for the pharmaceutical industry Implementing these guidelines is highly recommended for companies wishing to market drugs in the US This means that USP is important for pharmaceutical companies worldwide USP recently issued USP recommendations for conductivity measurement This new USP aims at the replacement of 5 antiquated laboratory tests by simple conductivity analysis 9 2 What is conductivity measurement according to USP Life would be easy if the limits for the conductivity of injection water were set to be 1 3 uS cm at a reference temperature of 25 C However the committee PHRMA WQC who made the USP recommendations could not agree on a simple Sodium Chloride model for water quality determination Instead they chose a Chloride Ammonia conductivity pH model in water atmospherically equilibrated CO2 at 25 C The objective of the WQC was to find an easy way to establish the water quality so on line analysis at process temperature was a
102. specified solution against a standard instrument Care should be taken to make a measurement at the reference temperature since differences in the type of temperature compensation of the instrument may cause an error note The standard instrument used as a reference must be accurate and based on an identical temperature compensation algorithm Therefore the Model SC 82 Personal Conductivity Meter of Yokogawa is recommended Typical calibration solutions The table shows some typical conductivity values for sodium chloride NaCl solutions which can be made up in a laboratory Table 6 1 NaCI values at 25 C Weight mg kg Conductivity note 0 001 10 214 uS cm For resistivity measurement the standard resistivity units of the 0 003 30 64 0 uS cm calibration solution can be calculated as follows 0 005 50 106 uS cm R 2 1000 G kO cm if G 2 uS cm 0 01 100 210 uS cm 0 03 300 617 uS cm 0 05 500 1 03 mS cm Example 0 1 1000 1 99 mS cm 0 001 weight 0 3 3000 5 69 mS cm R 1000 21 4 46 7 kQ cm 0 5 5000 9 48 mS cm 1 10000 17 6 mS cm 30000 48 6 mS cm 5 50000 81 0 mS cm 10 100000 140 mS cm IM 12D7B3 02E H 6 2 6 2 Calibration procedure Press the MODE key The legend CALIB appears and the YES NO key prompt flags flash Lr DI a ex LI uS cm gt E KY o try al Ly Put the sensor in standard solution Pr
103. specified when ordering default value is factory set If two or more EXA s are connected at a time with default value only one EXA will be detected from the host as EXA s have the same initial address Separately connect each EXA and set a different address for each 4 4 Integration of DD If the host supports DD Device Description the DD of the EXA needs to be installed Check if host has the following directory under its default DD directory 59454310831 594543 is the manufacturer number of Yokogawa Electric Corporation and 0831 is the EXA device number respectively If this directory is not found DD of EXA has not been included Create the above directory and copy the DD file OmOn ffo 0mOn sym m n is a numeral to be supplied separately into the directory Once the DD is installed in the directory the name and attribute of all parameters of the EXA are displayed Off line configuration is possible by using Capability file OM ONOO CFF 4 5 Reading the Parameters To read EXA parameters select the All block of the EXA from the host screen and read the OUT parameter The current process value is displayed Check that MODE_BLOCK of the function block and resource block is set to AUTO 4 6 Continuous Record of Values If the host has a function of continuously recording the indications use this function to list the indications values Depending on the host being used it may be necessary to set the schedu
104. strument may be damaged or broken if subjected to strong shock such as if the instrument is dropped Handle with care Although the instrument has a weatherproof construction the transmitter can be harmed if it becomes submerged in water or becomes excessively wet Do not use an abrasive or solvent in cleaning the instrument Notice The contents of this manual are subject to change without notice Yokogawa is not responsible for damage to the instrument poor performance of the instrument or losses resulting from such if the problems are caused by Improper operation by the user Use of the instrument in improper applications Use of the instrument in an improper environment or improper utility program Repair or modification of the related instrument by an engineer not authorized by Yokogawa Warranty and service Yokogawa products and parts are guaranteed free from defects in workmanship and material under normal use and service for a period of typically 12 months from the date of shipment from the manufacturer Individual sales organizations can deviate from the typical warranty period and the conditions of sale relating to the original purchase order should be consulted Damage caused by wear and tear inadequate maintenance corrosion or by the effects of chemical processes are excluded from this warranty coverage In the event of warranty claim the defective goods should be sent freight paid to the service department
105. t is not combined set 0 for Trend ServiceCalled used for other applications and Alert 17 FmsFeatures Indicates the type of 2 VcrNumber Sets the index of VCR to be Supported services in the application combined If set to 0 this layer In the EXA it is link object is not used automatically set according 3 Remotelndex Not used in EXA Set to 0 specific applications 4 ServiceOperation Set one of the following Only one link object is used 17 VCRs are factory set as shown in the table for Alert and or Trend below 0 Undefined 2 Publisher Table 5 5 VCR List 6 Alert Index VCR 7 Trend SM Number Factory Setting 5 StaleCountLimit Set the maximum number 293 1 For system management Fixed of consecutive stale input 294 2 Server LocalAddr 0xF3 values which may be 295 3 Server LocalAddr OxF4 received before the input 296 4 Server LocalAddr OxF7 status is set to BAD To 297 5 Trend Source LocalAddr 0x07 avoid the unnecessary Remote Address 0x111 mode transition caused 298 6 Publisher for All LocalAddr 0x20 when the data is not 299 7 Alert Source LocalAddr 0x07 correctly received by Remote Address 0x110 subscriber set this 300 8 Server LocalAddr OxF9 parameter to 2 or more 301 9 Publisher for Al2 LocalAddr 0x21 302 10 Publisher for AI3 LocalAddr 0x22 Set link objects as shown in Table 5 7 Table 5 7 Factory Settings of Link Objects example 5 5 2 Function
106. t so that V MRD 3 V Delay ST is 12 or greater V FUN First Unpolled Node Indicate the address next to the address range used by the host Set 0x15 or greater Unused address range EXA address is factory set to OxF5 Set this address to be within the range of the BASIC device in Figure 4 2 V NUN Number of consecutive Unpolled Node 0x00 Not used 0x10 LM device V FUN gt Unused V NUN V FUN V NUN gt BASIC device EXA 0xF5 e OxE7 OxF8 OXFB Default address OxFC OxFF Note 1 LM device with bus control function Link Master function Note 2 BASIC device without bus control function Portable device address Figure 4 2 Available Address Range IM 12D7B3 02E H 4 3 Bus Power ON Turn on the power of the host and the bus First all segments of the display are lit then the display begins to operate If the indicator is not lit check the polarity of the power supply Using the host device display function check that the EXA is in operation on the bus Unless otherwise specified the following settings are in effect when shipped from the factory PD tag SC1001 Node address 245 hexadecimal F5 Device ID 5945430831xxxxxxxx xxxxxxxx a total of 8 alphanumeric characters If no EXA is detected check the available address range and the polarity of the power supply If the node address and PD tag are not
107. te affixed to the side of the instrument agrees with your order Examples of textplates are shown below CE O N200 CONDUCTIVITY RESISTIVITY TRANSMITTER EXA SC202G SUPPLY 9 TO 32V DC OUTPUT FF TYPE 113 DUMP HABERE 10 TO 55 C SERIAL No YOKOGAWA 4 Made in the Netherlands O Figure 1 1 Textplate note The textplate will also contain the serial number and any relevant certification marks Y year M month Be sure to apply correct power to the unit The first two characters of the serial number 2000 M January 1 refers to the year and month of manufacturing Check that all the parts are present 2001 N February 2 including mounting hardware as specified in the option codes at the end of the model 2002 P March 3 number For a description of the model codes refer to Chapter 2 of this manual under 2009 E Apni 4 General Specifications 2008 W September 9 2009 X October 0 2010 A November N Basic Parts List Transmitter SC202 20H Be December RI User s Manual Optional mounting hardware when specified See model code note special grommett and if applicate option T are packed in the terminal compartment together with a second link for impedance selection IM 12D7B3 02E H 1 2 1 2 Application The EXA converter is intended to be used for continuous on line measurement in industrial installations The unit combines simple operation and microprocessor b
108. tion box and extension cable may be used The Yokogawa BA10 junction box and the WF10 extension cable should be used These items are manufactured to a very high standard and are necessary to ensure that the specifications of the system can be met The total cable length should not exceed 30 metres e g 10 m fixed cable and 20 m extension cable note Numbers 17 of both WF10 and BA10 do not need to be used S TRANSMITTER BIN SE EN oe lt t 5 Core Screen AS S S E White Co axial cable HOISIGE Overall Screen ER SF 3 e E 3 Core 17 Screen WF10 Cable 4S S Brown Co axial Cable d UT I A CI 14 overall screen 13 core Co axial cable 17 not used J brown in sc Co axial cable white 16 screen 11 red Fig 3 12 Connection of WF10 extension cable and BA10 junction box note See page 3 10 for termination for WF10 cable in combination with EXA SC IM 12D7B3 02E H 3 6 Extension cable may be purchased in bulk quantities cut to length Then it is necessary to terminate the cable as shown below Termination procedure for WF10 cable 1 Slide 3 cm of heat shrink tube 9 x 1 5 over the cable end to be terminated 2 Strip 9 cm of the outer black insulating material taking care not to cut or damage internal cores
109. ts the second compensated conductivity value The same sensor input value is used and compensated according a second temperature compensation method specified by TERTIARY COMP METHOD The second temperature compensation method is set in 5 2 5 Temperature compensation method Handling of scaling and mode parameters of the block is the same as All 9 3 A2 6 Setting Concentration to Al block Channel 4 represents the concentration value This value is obtained by using the concentration table service code 35 and 55 By changing the channel of either AI block to channel 4 concentration can be used for scheduled communications The SC202 holds 4 channels and 3 AI blocks Each Al block can be linked to a channel making 3 Process values available for scheduled communication Channel 1 Conductivity Resistivity acc COMP METHOD Channel2 Temperature Channel 3 Conductivity Resistivity acc TERTIARY COMP METHOD Channel 4 Concentration of first conductivity resistivity value A2 7 Setting the Transducer Block To access function specifics of the EXA of the transducer block the DD Device Description for EXA needs to have been installed in the configuration tool used For integration of DD refer to Integration of DD in Section 4 4 IM 12D7B3 02E H 10 1 APPENDIX 3 OPERATION OF EACH PARAMETER IN FAILURE MODE Following table summarizes the value of EXA parameters when LCD display indicates an Alarm
110. uS cm LiL uS Nor YES NO C509L TRASor gt oftware U MODE spur v NO number J LICI 1 LITI tei at DISP 1 aa ani om gt LI sso or Nom ELE ee DISP 2 F IT YES NO 1 A reso gt CALIG YES See Calibration REL IU NO menu Chapter 6 S Temperature 1 SI compensation in A TLC rsen YES TELE ss Car HR o GA NO Jp ees NO Mer 5 Y NO NO n Ye Mem Ye E recs Lt L Z LICI LICI Z LIL ves LIL se ww ILIL so DIS Jas NO HEpg 5 YES NO gt INHF o YES NO gt s compensated NO value Process Nr we Hir La uS cm 2504 Br YES NO gt Uncompensated if U Bd USP is enabled in gt N io serv code 57 u an cn f LiL uS cm us U V ves no gt 000 194273 LI LI LI em MEASURE CAL BUR RB Es en YES NO MODE p ue gt ENT EXA SE202 YOKOGAWA IM 12D7B3 02E H 5 1 5 Parameter setting 5 1 Maintenance mode 5 1 1 Introduction Standard operation of the EXA instrument involves use of the Maintenance or operating mode to set up some of the parameters Access to the maintenance mode is available via the six keys that can be pressed through the flexible window in the instrument front cover Press the MODE key once to enter this dialog mode Note that at this stage the user will be prompted for a passcode when this has been previously set up in service code 52 section 5 Calibrate See calibration section 6 Display setting See operation section
111. um pipe diameter 50 mm min 203 min 8 0 4 30 1 18 B gs 30 1 2 pus LUI RUN Na ES EE 92 3 6 115 4 5 2x 94 0 16 SPACING PANEL CUT OUT DIMENSION CUT OUT DIMENSIONS Fig 3 1 Housing dimensions and layout of Fig 3 2 Panel mounting diagram glands IM 12D7B3 02E H 3 2 wall mounting pipe mounting pipe mounting vertical horizontal TX 200 7 87 A Tx HU LU UU UU UU UU UU UU Qu 115 4 5 YY EN 2 ND pipe OPTION U Universal pipe wall mounting Figure 3 3 Wall and pipe mounting diagram Figure 3 4 Internal view of EXA wiring compartment IM 12D7B3 02E H 3 3 3 2 Preparation The Foundation Fieldbus connections and the sensor connections should be made in accordance with figure 3 4 and 3 5 The terminals are of a plug in style for ease of mounting To open the EXA 202 for wiring 1 Loosen the four frontplate screws and remove the cover 2 The terminal strip is now visible 3a Connect the power supply Use the gland on the left for this cable 3b Turck 4 Connect the sensor input using the gland on the right see fig 3 5 Switch on the power Commission the instrument as required or use the default settings 5 Replace the cover and secure frontplat
112. us value then the message RESET will appear on the second line display After pressing YES the entered value becomes the new calibrated cell constant After pressing NO the update procedure of the cell constant entry is canceled To avoid cable influences on the measurement a zero calibration with a dry sensor may be done If a connection box BA10 and extension cable WF10 are used zero calibration should be done including this connection equipment When using a 4 electrode sensor additional connections are required Temporarily interconnect terminals 13 to 14 and 15 to 16 before making the adjustment This is necessary to eliminate the capacitive influence of the cables The links should be removed after this step is completed 13 14 15 16 The EXA SC202 has a polarization check capable of monitoring the signal from the cell for distortion from polarization errors If there is a problem with the installation or the cell becomes fouled this will trigger E1 For some applications very low conductivity and long cable runs this error detection can cause false alarms during operation Therefore this code offers the possibility to disable enable this check 5 3 2 Temperature measuring functions Code 10 T SENS Selection of the temperature sensor The default selection is the Pt1000 sensor which gives excellent precision with the two wire connections used The other options give the flexibility to use a very wide range
113. ware switch for simulation function 45 1045 DEVICE STATUS 1 0 Device status VCR setting etc 46 1046 DEVICE STATUS 2 0 Device status failure or setting error etc 47 1047 DEVICE STATUS 3 0 Device status function block setting 48 1048 DEVICE STATUS 4 0 Not used 49 1049 DEVICE STATUS 5 0 Not used 50 1050 DEVICE STATUS 6 0 Not used 51 1051 DEVICE STATUS 7 0 Not used 52 1052 DEVICE STATUS 8 0 Not used IM 12D7B3 02E H A12 Al BLOCK 8 3 Relative Parameter Factory Write Index Name Default Mode Explanation 0 Block Header TAG All or Block Tag Information on this block such as Block Tag DD AI2 or AI3 0 S Revision Execution Time etc 1 ST_REV The revision level of the static data associated with the function block The revision value will be incremented each time a static parameter value in the block is changed 2 TAG DESC blank AUTO The user description of the intended application of the block 3 STRATEGY 1 AUTO The strategy field can be used to identify grouping of blocks This data is not checked or processed by the block 4 ALERT KEY 1 AUTO The identification number of the plant unit This information may be used in the host for sorting alarms etc 5 MODE BLK AUTO AUTO The actual target permitted and normal modes of the block 6 BLOCK ERR T This parameter reflects the err
114. y an interface device to locate the DD file for the resource 14 1014 GRANT_DENY 0 AUTO Options for controlling access of host computer and local control panels to operating tuning and alarm parameters of the block 15 1015 HARD TYPES Scalar input The types of hardware available as channel numbers bit0 Scalar input bitl Scalar output bit2 Discrete input bit3 Discrete output 16 1016 RESTART Allows a manual restart to be initiated Several degrees of restart are possible They are 1 Run 2 Restart resource 3 Restart with initial value specified in FF functional spec 1 and 4 Restart processor 1 FF 891 Foundation TM Specification Function Block Application Process Part 2 17 1017 FEATURES Soft write lock Used to show supported resource block options supported Report supported 18 1018 FEATURE_SEL Soft write lock AUTO Used to select resource block options defined in FEATURES supported bit0 Scheduled Report supported bit1 Event driven bit2 Manufacturer specified 19 1019 CYCLE TYPE Scheduled Identifies the block execution methods available for this resource 20 1020 CYCLE_SEL Scheduled AUTO Used to select the block execution method for this resource IM 12D7B3 02E H 8 2 Relative Parameter Factory Write Index __ Index Name Default Mode Explanation 21 1021 MIN CYCLE T 3200 100ms

YOKOGAWA - Insatech

Contents

Download Pdf Manuals

Related Search

Related Contents