Operating manual
Contents
1. ADDR FUNC REG H L COUNT H L CRC L H 01 03 00 21 00 01 D4 00 The answer ADDR FUNC BYTE C DATA H L CRC L H 01 03 02 20 BO AO 30 DATA identification code 20F2h 3 Change of the device address from 1 to 2 write to reg 20h ADDR FUNC REG H L DATA H L CRC L H 01 06 00 20 00 02 09 C1 DATAH O DATA L new device address 2 The answer the same as the message ADDR FUNC REG H L COUNT H L CRC L H 00 06 00 20 00 02 09 C1 4 Change of baud rate of all devices connected to the net BROADCAST message ADDR FUNC REG H L COUNT H L CRC L H 00 06 00 22 00 04 29 D2 DATAH O DATA L 4 new baud rate 19200 baud 3 Device do not reply to BROADCAST type messages CIT 200 5 Read of the registers 1 2 and 3 in one message example of reading a number of registries in one frame ADDR FUNC REG H L COUNT H L CRC L H 01 03 00 01 00 03 54 OB COUNT L the count of being read registers max 16 The answer ADDR FUNC BYTE C DATA H1 L1 DATA H2 L2 DATA H8 L3 CRC L H 01 03 06 00 OA 00 00 00 01 78 B4 DATA H1 L1 reg O1h 10 displayed value 1 0 DATA H2 L2 reg 02h 0 no errors DATA H3 L3 reg O3h 1 decimal point position 0 0 3s Ther2. Technical modifications reserved CIT 200_E_030310 Telefon 49 0 92 35 98 11 0 www bdsensors com SLi 32 INS GC i Telefax 49 0 92 35 98 11 11 info bdsensors de ressure measur irement
3. Hi C equal to 300 and 1200 respectively The calculations will be done for there different input currents from example 2 BO SENSORS pressure measurem ent CIT 200 a lin 10 mA and I 0 375 Accordingly to expression on page 24 for linear characteristic 0 375 x 1200 300 562 and next the Lo C value is added to the result so the displayed value W 562 300 262 b lin 2 5 mA and 0 0938 W 441 C lin 20 5 mA and I 1 0313 W 1247 Example 4 The square characteristic Let the input mode 4 20 mA and parameters Lo C and Hi C equal to 300 and 1200 respectively The calculations will be done for there different inout currents from example 2 a lin 10 mA and 0 375 Accordingly to expression on page 24 for linear characteristic 0 375 x 1200 300 211 and next the Lo C value is added to the result so the displayed value W 211 300 89 b lin 2 5 MA and I 0 0938 W 287 cC lin 20 5 mA and 1 0313 W 1295 Example 5 The square root characteristic Let the input mode 4 20 mA and parameters Lo C and Hi C equal to 300 and 1200 respectively The calculations will be done for there different input currents from example 2 a lin 10 mA and I 0 375 Accordingly to expression on page 24 for linear characteristic sart 0 375 x 1200 300 919 and next the Lo C value is added to the result
4. 5 i Say pressure measurement CIT 200 7 3 Menu description password checking If some password different from 0000 is set then every enter to main menu follows the entering of password If entered password is correct then first menu position will be displayed else warning Err and unit returns to measurement mode I Due to problem with direct displaying of m letter it is exchanged with special sign mn Independently in user manual letter m is used to make it more readable example modE 7 3 1 inPt menu This menu presets the measurement input tYPE type of the input sensor This parameter can be set to values 0 4 20 current inputs 0 2 10 0 1 5 voltage inputs Displayed values are defined by parameters Lo C Hi C or by user defined characteristic points and parameter Pnt CHAr this option presents type of the conversion characteristic and can be set to msi linear When one of those characteristics is chosen Pa o display range is defined by Lo C and Hi C Sqrt square root USEr user defined characteristic Maximal length 20 points Every point is defined by user Adding editing and deleting of points is done by options AddP EdtP dELP InPt menu respectively IS lf user defined characteristic is selected and if number of defined points is lower than 2 th
5. 6 2 Detection of the peak values cceccceccceeccaeeeceeeeeeeeaeeeseeeseueeseeesseeseueeaeeeseeesueeaeeeneeesoes 14 7 Device programming ccccccceccceecccececececeuecececsueceueecseecseeseseeaceceueceueecaeeseeeseuseseeeseusseaeeneees 14 Te Neg WO Cee Vac pe eettercoracactecactnea eercmena te anineanec evaeestecssncasterawneecaenancanteavmeedeunaeencteasecncoss 14 7 2 Parameters edition ccccccceecceecccececeeeceuecececseeceueecaeesseesauseeacesseeseuseeaeeseeeseueeneeessensegs 15 7 2 1 Numeric parameters digit change MOE ccccccseeeeeeeeeeeeeseeeeseeeeseeeeseeeeseeeenees 15 7 2 2 Numeric parameters slide change MOE ecccseeeeeeeeeeeeeeseeeeseeeeseeeeseeeeseeeesees 16 7 2 3 Switch parameters LIST type cccsccccseccceeeeeseeeeseeeeseeeeseeeeseeeeseeeseeeseeeeseeeesaes 16 FoNN deS CIPON poeeecne meee te meee cee tenet ene Bet oem one cent ee mSen one e Erne Ce oe nese eee 17 7 9 1 InP MEnU o annannnnennennnnnnnnnnnnnnnnnnnnnrnnnnnrnnrnnrnrrnrrnrrnrnnrnnrnnrnrrnrrnrrnrnnrnnrnnrnrrnrrnrrnrrnenne 17 Tien OU E e E E E E 19 Las ROLA MEMU scs E E eee eee eeeeeeeoedeneeee 20 7 3 4 Scod paramele egsa EREE EREE 20 TET o M C a E 0 E E T E eee EEE EN 20 7 3 6 Edit PALAMETEL cccceccceccceeecencecseeceeeceeeceeecaueceueeeeeseueeeaeesseesueseaeenseesseeseaeenees 21 l3 EFS parame lo eee eee ee eee cee eee eee eee eee eee eee ee eee ee ee eer 21 ToO SEN ONU ee neem enn ey ne
6. FSO tolerance band 0 50 C max 0 25 FSO m eo C ees OO Gee OF tod fie fA ed S Ga i a D Saas hs TE C 2 Gt B Tal yressure measurement Display range Accepted prolonged input overload Communication interface Transmission speed Display Data memory Protection level Housing type Housing material Housing dimensions Mounting hole Assembly depth Panel thickness Operating temperature Storage temperature Screws tightening max torque Max connection leads diameter Electrical safety EMC CIT 200 999 9999 plus decimal point 20 RS 485 Modbus RTU 1200 115200 bit sec 4 digit LED display red 4 x 13 mm non volatile memory EEPROM type IP 40 front side panel NORYL UL94V 0 24 Voc version 72 x 36 x 77 mm 230 Vac version 72 x 36 x 95 mm 67 x 33 mm for 24 Vpc version min 78 mm for 230 Vac version min 95 mm max 5mm 20 50 C 10 70 C 0 5 Nm 2 5 mm EN 61010 1 EN 61326 This is a class A unit In housing or a similar area it can cause radio frequency interference In such cases the user can be requested to use appropriate preventive measures CIT 200 4 Device installation The unit has been designed and manufactured in a way assuring a high level of user safety and resistance to interference occurring in a typical industrial environment In order to take full advantage of these characteristi
7. so the displayed value W 919 300 619 b lin 2 5 MA and lIn 0 0938 normalized result is negative so the displayed value is equal to Lo C parameter W Lo C 300 C ln 20 5 mA and I 1 0313 W 1223 CIT 200 Example 6 The user defined characteristic Let the input mode 4 20 mA and the user selected the 10 segment characteristic To do this it is necessary to enter X and Y coordinates of 11 points see Menu inPt The calculations will be done for three different input currents from example 2 so in calculations some of the segments will be used only Let the following points will be given X1 00 0 Y1 50 0 X2 10 0 Y2 30 0 X6 30 0 Y6 30 0 X7 40 0 Y7 80 0 X10 90 0 Y10 900 0 X11 100 0 Y11 820 0 Additionally all other points must to be defined and stored in the device memory a lin 10 mA and 0 375 The segment defined by X6 30 0 and X7 40 0 for this will be selected Accordingly to expressions given for user defined characteristic see page 25 X6 PL 30 Y6 PL 30 X7 PH 40 Y7 PH 80 and lp 0 3 the displayed value W I Ip X X PH X PI x 100 Y PL z 80 30 _ a 0 375 0 3 x xX 100 30 67 0 3 X T4030 b lin 2 5 mA and I 0 0938 because of the normalized value is lower than 0
8. ane mr oe en nnn ee 21 7 4 Menu structure 20 0 cc cece ceeccceeeceeeceeeeneeeseeeeau cena eeseueeseeseeeseueeeueeseeesaeeseueeseeseeesueeaeeeseeeseas 22 8 Over current protection ccccsecccseccceeeecsececseecsueecseeesauecseecseeesueesueeseeeeeseeeseeeeseeesseeesaags 23 9 Displayed values CICA NON recs cere sieecesecnceeerecreacsenaneececacoseuseaesaneeensesnaeceuees acne eenetennceeseecseacee 23 9 1 Additional calculations used conversion characteristic cccccceeccseeeceeeeeeeeeeeeseeeeees 23 Olean ena SUC epee ntcetetenenenatesiieee ecetnncueciennolie aunecrntionte sence aesnepideemarctaesins 23 Ohad Che CALA CICISUG saiaccccgctasacccatnteadeadecundictegusaacdadens sededeadendaneedentedantacteqennedeanaiets 24 9 1 3 Square roOt ChArACtELiStIC cccccecssececseeeceseeccaseeccaueeceageecsageeceageessuseecsuseessueeessaeees 24 9 14 User CUMS CCI VSN SUNG gases cts a healed ssa clgeicte coed ou eee 25 9 2 Examples Of calculations cccccseccceeeceeeeeeeeceeeseeeeseeeseeeseueeseeeseeeseueeaeeeseeesueeaeeeseeesees 26 10 The Modbus protocol Nandling cccccccceecccseeeceseeseeeeseeceseeeeseueeseueeseeeeseueeseeeseeeseeeessnees 29 TOT PASE OF FSIS USS aici E E E ane enenteieaceaednuers 29 10 2 Transmission errors description cccccceeccsececeeeceeeeeeeeseeeceueeseeeseeesueeseeesseeseeseaeeenaees 31 10 3 Examples of query answer frames ccccceeecceeeeceeeeceeecceeeeceueece
9. for an increasing value of input current the displayed value decreases ic Hic Loc E 8 PE 3 FE 2s O Loc Hi i B 12 16 20 input current mA f 8 12 16 20 Input current mA Fig 9 1 normal Lo C lt Hi C and inverted Lo C gt Hi C characteristic 9 1 2 Square characteristic The normalized result is squared and further conversion is done as for linear characteristic Conversion is made accordingly with the expression W L2 x Hi C Lo C Lo C where W means the displayed value Hic Loc 3 3 PE zs PE 8 ao oO Loc Hic 0 4 8 12 16 20 0 4 8 12 16 20 Input current mA Input current mA Fig 9 2 normal Lo C lt Hi C and inverted Lo C gt Hi C characteristic 9 1 3 Square root characteristic The normalized result is rooted and further conversion is done as for linear characteristic SD SENSORS pressure measurement CIT 200 Conversion is made accordingly with the expression W VI x Hi C Lo C Lo C where W means the displayed value I Showed above expression is not valid when normalized result is negative It is possible for 4 20 mode only In this case I lt 0 the displayed result is equal Lo see graphs below Hi C Loc a gej L V o 2 o amp 3 amp SZ as as Q m Loc a Hi C 0 4 8 12 16 20 0 4 8 12 16 20 Input current mA Input current mA Fig 9 3 normal Lo C lt Hi C
10. impossible to use it again The one use password can be restored by Service Division only 7 3 5 rS menu This menu is connected with RS 485 interface and sets his properties Addr this parameter defines the address of the device accordingly to Modbus protocol It can be set in range from O to 199 If the value O is set then device responds to frames with address 255 FFh bAud this parameter determines RS 485 interface baud rate It can be set to one of 8 possible values 1 2 72 4 74 8 9 6 719 2 38 4 57 6 115 2 which respond to the baud rates of 1200 2400 4800 9600 19200 38400 57600 and 115200 bit s respectively BO SENSORS pressure measurem ent CIT 200 mbAc this parameter sets the access to the configuration registers of the device Possible values on configuration registers can be set via RS 485 interface OFF configuration registers can not be set via RS 485 interface rESP this parameter defines minimal additional delay between the Modbus message and the answer of the device received and sent via RS 485 interface This additional delay allows the device to work with poor RS converters which do not works properly on baud rates higher than 19200 This parameter can be set to one of values Std 10c ae answer delayed of 10 20 50 100 of 200 chars respectively 4 aie where one character time depends on selected ba
11. is a risk of a serious threat to the safety of people or property additional independent systems and solutions to prevent such a threat must be used The unit uses dangerous voltage that can cause a lethal accident The unit must be switched off and disconnected from the power supply prior to starting installation of troubleshooting in the case of malfunction Neighbouring and mating equipment must meet the requirements of appropriate standards and regulations concerning safety and be equipped with adequate anti overvoltage and anti interference filters Do not attempt to disassemble repair or modify the unit yourself The unit has no user serviceable parts Units in which a defect was stated must be disconnected and submitted for repairs at an authorized service centre AN In order to minimize fire or electric shock hazard the unit must be protected against atmospheric precipitation and excessive humidity Do not use the unit in areas threatened with excessive shocks vibrations dust humidity corrosive gasses and oils Do not use the unit in explosion hazard areas Do not use the unit in areas with significant temperature variations exposed to condensation or icing Do not use the unit in areas exposed to direct sunlight CIT 200 A 2 General characteristics The CIT 200 is a simple digital panel indicator equipped with two measurement inputs One current input 0 20 4 20 mA and one voltage input 0 5
12. of which the panel is made must not exceed 5mm Place the unit in the mounting hole inserting it from the front side of the panel and then fix it using the brackets Figure 4 2 The minimum distances between assembly holes axes due to the thermal and mechanical conditions of operation are 91 mm x 57mm Figure 4 3 ea g z qia f PN Ca ka Ot a Ce En faa FS Sem Cd Bees FO Gee S Ga i A L eee EEN DRS A So Tal yressure measurement CIT 200 eel nae yz A 67 mm Fig 4 3 minimum distances when assembly of a number of units CIT 200 4 3 Connection method Caution Installation should be conducted by qualified personnel During installation all available safety requirements should be considered The fitter is responsible for executing the installation according to this manual local safety and EMC regulations The unit is not equipped with an internal fuse or power supply circuit breaker Because of this an external time delay cut out fuse with minimal possible nominal current value must be used recommended bipolar max 2A and a power supply circuit breaker located near the unit In the case of using a monopolar fuse it must be mounted on the phase cable L The power supply network cable diameter must be selected in such a way that in the case of a short circuit of the cable from the side of the unit the cable shall be protected against destruction with an electrical inst
13. 1 5 0 10 2 10 V Current input has additionally overcurrent protection circuit which protects standard resistor The selection of active input is realised by software and selected input can be changed at any time Additionally the CIT 200 allows user to select a conversion characteristic of several kinds linear square square root and user defined max 20 points length Result is showed on 4 digit LED display Displayed values range can be selected by user from 999 to 9999 plus decimal point Device CIT 200 is equipped with RS 485 Modbus RTU communication interface The measurement range active input and other parameters can be selected while ordering The device can be configured via IR remote controller or optionally by PC via RS 485 interface or using simple RS 232 to IR converter Moreover communication interface RS 485 enables data transmission in any monitoring system equipped witch Modbus RTU protocol Easy assembling small dimensions precision and reliability are the basic trumps of CIT 200 indicators IR remote controller is not a part of the CIT 200 and must be ordered separately 3 Technical data Power supply voltage Standard 24 Voco option 110 Vac 230 Vac External fuse required T type max 2A Power consumption Standard 10 30 Vpc options 110 Vac 230Vac 10 Input signal 0 4 20 mA 0 1 5 V 0 2 10 V Current input resistance lt 500 Voltage input resistance 100 kQ Accuracy 25 C 0 1
14. 2003 108 EC on waste electrical and electronic equipment Electrical and electronic waste equipment may not be disposed by domestic refuse 13 Warranty conditions The warranty conditions are subject to the legal warranty period of 24 months from the date of delivery In case of improper use modifications of or damages to the device we do not accept warranty claims Furthermore defects due to normal wear are not subject to warranty services ER qa p M ISEN P Gu Ee EY Sa tN ye a pressure measuren CIT 200 BD SENSORS GmbH BD Sensors Str 1 95199 Thierstein Germany Phone 49 0 92 35 98 11 0 Fax 49 0 92 35 98 11 11 The addresses of our Distribution Partners are listed on our homepage www bdsensors com lt is possible to download data sheets operating manuals ordering codes and certificates as well further agencies in EUROPE ASIA Belgium e ran Denmark Israel Germany Kazakhstan England Taiwan France Thailand Greece Italy AUSTRALIA Lithuania e Queensland Luxembourg Netherlands Norway Poland Romania Russia Sweden Switzerland Slovakia Spain Czech Republic Turkey Ukraine The contents of this operating manual reflect the version available at the time of printing It has been issued to our best knowledge and belief However errors may still be included For incorrect statements and their consequences liability cannot be assumed by BD SENSORS
15. BDO SENSORS pressure measurement Operating manual Low Cost Process Display U input CIT 200 Read the user s manual carefully before starting to use the unit Producer reserves the right to implement changes without prior notice BD SENSORS GmbH BD Sensors StraBe 1 Telefon 49 0 92 35 98 11 0 www bdsensors com D 95199 Thierstein Telefax 49 0 92 35 98 11 11 info bdsensors de CIT 200 Table of contents 1 Basic requirements and user safety ccccccccsecccseeeceeeceuceceuceceusecsucessusecsusessueessueesseeesseeeeas 3 2 GCS Fal GNAACISIISICS sanenseececanceesecegsecqeeeqeesetnagiee E E r 4 x eee Che a aerate cette E cle ci co le detec cts cin aoe ee cle cient eee eee 4 4 Device installation 20 cece ceccccececeeeeeeeeceeeceeeeeeeeseeeeeeeenseesaeeeeeeesseeseeeeeeeesaeeseueesueeseeesueeneeeseeeeaes 6 4 1 UNPACKING re iscitaitsradericeyac accvchsisericesbaica dad selar a aaia aa a aE a ae 6 Ae AS SODIY ae ne EE E E ee eee 6 4 3 Connection method naano0aneoannooannoannonnrernnnrnnrnrnnernnrrrnrernnrrenrernnronnreranernnrernrernnrerneenn 8 ANACO a a A dene aenlactpeee san tienen 11 5 Description of IR remote controller and control cccccceeceseeeceeeeeeeeeeeeseeesueeseeenseeseeeeeeeens 12 6 Principle of operation ccceccceeccececeeeceeeeeeeeceeseueeseeesseeseueeseeeseeseueeseeeseeesuesseeeseeeseeeeaeeens 12 ot NS eA MSI MOOG reran oe cee E E E eee oe toe eee eee 12
16. D hE ic 4 Power DATA S supply DATA GND 17 GND depending on version RS 485 0 20mA 4 20mA Fig 4 5 terminals description AN All connections must be made while power supply is disconnected CIT 200 b FUSE o 6 L N 230V AC 24V DC Fig 4 6 connection of power supply a for 230 Vac version b for 24 Vpc version Fig 4 8 connection of 3 wire current converters BD SENSORS pressure measurement CIT 200 617 8 9 10 Fig 4 9 connection of voltage converters 4 4 Maintenance The unit does not have any internal replaceable or adjustable components available to the user Pay attention to the ambient temperature in the room where the unit is operating Excessively high temperatures cause faster ageing of the internal components and shorten the fault free time of unit operation In cases where the unit gets dirty do not clean with solvents For cleaning use warm water with small amount of detergent or in the case of more significant contamination ethyl or isopropyl alcohol AN Using any other agents can cause permanent damage to the housing CIT 200 5 Description of IR remote controller and control infra red ___ transmitter 5 programming pushbuttons Symbols and functions of push buttons Symbol used in the manual ESC MENU Functions e enter to main menu press and hold by at least 2 sec e exit the current level and enter to previou
17. ED display bright can be set to conventional values from 1 to 8 CIT 200 7 3 3 HOLd menu This menu contains parameters connected with peak detection function See also full description of the peak detection function in paragraph DETECTION OF THE PEAK VALUES modE the type of detected changes of the input signal can be set to values norm peaks peak and next drop of the input signal of value equal at least PEA Inv _ drops drop and next peak of the input signal of value equal at least DEA PEA minimal detected signal change classified as peak or drop see Figure 6 1 timE maximum time of displaying of the peak drop value can be set from 0 1 to 19 9 sec with 0 1 sec resolution HdiS type of displayed values rEAL current value is displayed HOLd peak drop value is displayed 7 3 4 Scod parameter This parameter defines user password 4 digits number If this parameter is set at value 0000 user password is turned off If the user do not remember his password the access to the menu is possible by the one use password To get this password please contact with Marketing Division Single use password can be used only one time after that it is destroyed Entering this password causes in clearing of user password it means sets the user password to 0000 Is The one use password can be used ONE TIME ONLY it is
18. airs of X coordinates of points no 2 19 of the user l defined characteristic 96h5 Vou 999 1999 he value of sX coordinate of point no 20 of the user defined characteristic expressed in 0 1 97h5 yes 999 9999 The value of Ag coordinate of point no 20 of the user defined characteristic no decimal point included 2 after writing to register no 20h the device responds with an old address in the message 3 after writing to register no 22h the device responds with the new baud rate 4 the value of the mbAc parameter is also connected to write to this register so it is possible to block a writes but impossible to unblock writes via RS 485 interface The unblocking of the writes is possible from menu level only 5 the pairs of X Y coordinates may be defined for any free point The pair is free it means that particular point is not defined if X coordinate of this point is equal 8000h After writing both X and Y coordinate the point is defined and used in The coordinates of any point can be changed at any time SD SENSORS pressure measurement calculation of result CIT 200 10 2 Transmission errors description lf an error occurs while write or read of single register then the device sends an error code according to Modbus RTU specifications example message no 1 Error codes Oth illegal function only functions 03h O6h and 10h are available 02h illegal regi
19. allation fuse Wiring must meet appropriate standards and local regulations and laws In order to secure against accidental short circuit the connection cables must be terminated with appropriate insulated cable tips Tighten the clamping screws The recommended tightening torque is 0 5 Nm Loose screws can cause fire or defective operation Over tightening can lead to damaging the connections inside the units and breaking the thread In the case of the unit being fitted with separable clamps they should be inserted into appropriate connectors in the unit even if they are not used for any connections Unused clamps marked as n c must not be used for connecting any connecting cables e g as bridges because this can cause damage to the equipment or electric shock If the unit is equipped with housing covers and sealing packing protecting against water intrusion pay special attention to their correct tightening or clamping In the case of any doubt consider using additional preventive measures covers roofing seals etc Carelessly executed assembly can increase the risk of electric shock After the installation is completed do not touch the unit s connections when it is switched on because it carries the risk of electrical shock Due to possible significant interference in industrial installations appropriate measures assuring correct operation of the unit must be applied To avoid the unit of improper indica
20. and inverted Lo C gt Hi C characteristic 9 1 4 User defined characteristic User defined characteristic is defined as set of X Y points Number of the points is variable and may be set from 2 to 20 points which make linear segments see graph and see Menu inPt Due to the normalized result I the device computes specific segment e g for characteristic from figure below and 0 65 the segment between points X 50 0 and X 70 0 will be chosen Let s mark those points as PL point low i PH point high in this example PL 50 0 and PH 70 0 and the normalized result for the point PL as lp in this example Ip In PL 0 5 The displayed result is calculated accordingly to the expression Y PH Y PL W I S L a Ua X TPH X PI x 100 Y PL where Y PH X PH Y PL X PL mean values of X and Y coordinates of PH i PL points 0 Ifthe normalized result exceeds the user defined characteristic values then specific utmost segment defined by two next points is used for calculations If characteristic from figure below is used and if gt 1 then segment defined by points X PL 90 0 X PH 100 0 will be used CIT 200 Normalized measurement In for 0 20 mA range 0 0 2 0 35 0 5 0 7 0 9 1 5 elements characteristic X PH 70 0 se E Displayed value Input current mA I YW ws Fa aa wri Uuwww
21. arameter edition Edit EM 4 digit special passworc entering x N E 7 2 4 digit user password entering if it is different from 000 Parameter edition Parameter edition Parameter edition Default settings restoring BD SENSORS pressure measurement CIT 200 8 Over current protection The current input of the device is equipped with over current protection circuit This circuit protects the standard resistor to damage Maximum input current is set to 40 mA typical When temperature of the standard resistor falls the protection circuit will turn off himself automatically and the device will measure the input current again Due to thermal phenomenon in the standard resistor precision of the measurement may be lower during few minutes up to the standard resistor temperature will falls to the environment temperature 9 Displayed values calculation For simplicity of examples it s assumed that current input is selected and all calculations are related to this inout When voltage input is selected calculations are similar be sure of particular ranges and units The first step to compute the result of measure is the calculation of the normalized result it means result of 0 1 range To do it the begin of the input range 0 mA for 0 20 mA range and 4 mA for 4 20 mA range must be subtracted from measured value Next received result must be divided by the width of the input range it means 20 mA
22. baud 3 9600 baud 4 19200 baud 5 38400 baud 6 57600 baud 7 115200 baud CIT 200 Register Write Range Register description 93h4 V s 0 1 mbAc parameter in rS menu permission to write registers via E RS 485 interface O write denied 1 write allowed rESP parameter in rS menu additional response delay O 25h Yes 0 5 no additional delay 1 10c option 2 20c option 3 50c option 4 100c option 5 200c option bri parameter display brightness oe 7 ae 1 the lowest brightness 8 the highest brightness Edit parameter numerical parameters edit mode O on vs oe dig mode 1 SLid mode 50h Yes 0 1 modE parameter in HOLd menu type of detected changes 0 peaks 1 drops 51h Yes 0 9999 PEA parameter in HOLd menu minimum detectable change no E decimal point included 5h Ves 4 199 timE parameter in HOLA menu maximum peaks or drops display time expressed in seconds HdiS parameter in HOLd menu 0 oan us ee rEAL mode 1 HOLd mode 70h5 yes 999 1999 TPE value of WX coordinate of point no 1 of the user defined characteristic expressed in 0 1 71h5 vas 999 9999 The value of Y coordinate of point no 1 of the user defined characteristic no decimal point included 72h 95h5 Further p
23. cs installation of the unit must be conducted correctly and according to the local regulations Read the basic safety requirements on page 3 prior to starting the installation Ensure that the power supply network voltage corresponds to the nominal voltage stated on the unit s identification label The load must correspond to the requirements listed in the technical data All installation works must be conducted with a disconnected power supply Protecting the power supply clamps against unauthorized persons must be taken into consideration 4 1 Unpacking After removing the unit from the protective packaging check for transportation damage Any transportation damage must be immediately reported to the carrier Also write down the unit serial number on the housing and report the damage to the manufacturer Attached with the unit please find user s manual assembly brackets 2 pieces 4 2 Assembly The unit is designed for mounting indoor inside housings control panel switchboard assuring appropriate protection against electric impulse waves Metal housing must be connected to the grounding in a way complying with the governing regulations Disconnect the power supply prior to starting assembly Check the correctness of the performed connections prior to switching the unit on A In order to assembly the unit a 67 x 33 mm mounting hole Figure 4 1 must be prepared The thickness of the material
24. d characteristic is displayed this option allows user to modify of particular point of the user defined characteristic After selection current number of points of the user defined characteristic is displayed for about approx 1 5 sec After that device waits for selection of point being edited by v buttons The short pressing of button causes by switching between X and Y value of the displayed point The press press and hold at least 2 sec of ENTER button causes by entering to edit the selected coordinate of the point Modification of the coordinates is done accordingly to numerical parameters edition BO SENSORS pressure measurem ent CIT 200 IJ AddP dELP and EdtP options are available only if the user defined characteristic is used it means when parameter CHAr USEr Lor these parameters define the expansion of nominal range in percent They Hi r determine the permissible range of input signal Figure 7 1 The permissible range allow user to exceed the nominal range of input signal If input value is contained in the permissible range a proper result is displayed If input signal exceeds this range defined by Lo r and Hi r Lo or Hi warning is displayed depend on input signal value Lo r 75 0 3 mA Hi r 50 1 mA gt nominal measurement range 4 20mA x 7 imal S 20 21 22 permissible meas
25. e no decimal point The status of the current measurement Oh data valid AOh top 02h No Oh AOh 60h border of the measurement range is exceeded 60h bottom border of the measurement range is exceeded Pnt parameter in InPt menu decimal point position aaa 0 3 0 0 1 0 0 2 0 00 3 0 000 O6h No 999 9999 Peak drop value no decimal point tyPE parameter in InPt menu nominal input range O 10h Yes OaS 0 20 mA range 1 4 20 mA range 2 0 10 V range 3 2 10 V range 4 0 5 V range 5 1 5 V range CHAr parameter in InPt menu characteristic type 11h Yes 0 3 0 linear 1 square 2 square root 3 user defined 12h Yes 0 5 FILt parameter in InPt menu measurement filtering rate 13h Vas 0 3 Pnt parameter in InPt menu the copy of 03h register decimal E point position O 0 1 0 0 2 0 00 3 0 000 14h Yes 999 9999 Lo C parameter in InPt menu no decimal point included 15h Yes 999 9999 Hi C parameter in InPt menu no decimal point included 16h Yes 0 999 Lo r parameter in InPt menu in 0 1 17h Yes 0 199 Hi r parameter in InPt menu in 0 1 20h Yes 0 199 Device address 21h No 20F2h Device identification code ID 3 bAud parameter in rS menu baud rate 22h Yes 0 7 O 1200 baud 1 2400 baud 2 4800
26. e is no full implementation of the Modbus Protocol in the device The functions presented above are available only CIT 200 11 Default and user s settings list Parameter Description Default value User s value Desc page Configuration of measurement input inPt menu tYPE Input mode 4 20 17 CHAr Conversion characteristic mode Lin 17 Filt Filtering ratio 0 17 Pnt Decimal point position 0 0 17 Lo C Minimum displayed value for nominal range 000 0 18 Hi C Maximum displayed value for nominal range 100 0 18 Lor Extension of the bottom of the nominal input range 5 0 18 Hir Extension of the top of the nominal input range 5 0 18 Display parameters bri Display brightness bri6 19 Configuration of peaks detection function HOLd menu modE Kind of detected changes norm 20 PEA Minimum detected change 0 0 20 timE Maximum time of peak displaying 0 0 20 HdiS The type of displayed value HOLd 20 RS 485 interface configuration menu rS Addr Device address 0 20 bAud Baud rate 9 6 20 mbAc Permission to changes of configuration registers on 21 rESP Additional delay of answer transmission Std 21 Configuration of numerical parameters edition Edit Numerical parameters edit mode dig 21 12 Disposal The device must be disposed according to the European Directives 2002 96 EC and
27. en warning Errc is displayed in measurement mode The process of displayed result calculation is described in details in DISPLAY VALUES CALCULATION paragraph FiLt this parameter sets filtration rate It can be set to values from O no filtration to 5 strongest filtration time window about 2 sec Pnt decimal point position It can be set to one of 0 hk 0 0 74 0 00 0 000 Decimal point position is changed by v buttons CIT 200 Lo Cc Hi C These parameters describe the values displayed for minimum and maximum input current For example if input type is set to 4 20 mA Lo C parameter defines the value displayed when input current is equal 4 mA and Hi C parameter defines the value displayed for 20 mA of input current Available range for these parameters 999 9999 Negative values can be set by entering sign on the first position by use of v buttons IEY lf user defined characteristic is selected parameter CHAr USEr the parameters Lo C and Hi C are not available for modification due to their values are calculated from defined characteristic AddP edition this menu allow user to add single point to the user defined characteristic After selection of this option device waits for X and Y coordinates of new point Modification of the coordinates is done accordingly to numerical paramete
28. er is displayed Operation of ENTER button depend on present menu position e if the name of some sub menu is displayed enter this sub menu name of the first parameter or next level sub menu is displayed e if the name of some parameter is displayed enter the edition of this parameter present value of the parameter is displayed ESC MENU button allow user to exit present menu level and goes to level menu or measurement mode ts After about 1 min since last use of the buttons device exits the menu mode and returns to the measurement mode only if no parameters are in editing mode 7 2 Parameters edition To start edition of any parameter user should select name of desired one using v buttons and then press ENTER 7 2 1 Numeric parameters digit change mode Numerical parameters are displayed as decimal numbers The mode of its new value entering depends on chosen edit method see parameter Edit In mode by digit Edit dig pressing one of the keys or v causes change of current position flashing digit or the sign Short pressing of the ENTER button causes change of the position digit Press ENTER at least 2 seconds to accept the changes after that question SEt is displayed and user must to confirm or cancel the changes To conform changes and story it in EEPROM press ENTER button shortly after SEt is displayed To cancel the changes press ESC but
29. for 0 20 mA range and 16mA for 4 20 mA range So normalized result can be expressed by expressions I 4 L for 4 20mA_ range n 16 i fon 7 lim f a 020 14 dini n O foi 20mA_ range where lino Means input current in MA and normalized result 3s If measured value exceeds the nominal input range 0 20 mA or 4 20 mA and do not exceed the permissible input range then received normalized I result will exceed 0 1 range e g input range 4 20 mA input current 3 mA the normalized result is equal 0 0625 and for input current 22 mA the normalized result is equal 1 125 In such cases presented expressions are still correct 9 1 Additional calculations used conversion characteristic The manner of the additional computation of the displayed result depends on selected conversion characteristic All presented charts are connected with the input range 4 20 mA 9 1 1 Linear characteristic The normalized result is converted by fixed coefficients determined by Lo C and Hi C parameters when the normalized results is equal 0 then value Lo C is displayed and when the normalized results is equal 1 then value Hi C is displayed CIT 200 Expression presented below shows the manner of result calculation W I X H iC Lo C Lo C where W means the displayed value The value of the Lo C parameter can be higher than the value of Hi C parameter In such a case
30. l VA W II ENAS NA WI ITU CANI LEI IV lI 9 2 Examples of calculations User defined characteristic is defined as set of X Y points Number of the points is variable and may be set from 2 to 20 points which make linear segments see graph and see Menu inPt Due to the normalized result I the device computes specific segment e g for characteristic from figure below and 0 65 the segment between points X 50 0 and X 70 0 will be chosen Example 1 Selection of the permissible input range 4 20 mode lf in 4 20 mode the user sets Lo r 20 0 and Hi r 10 then permissible input currents range will be equal 3 2 mA 22 mA Lower border of the range is the result of calculations 4 mA 4 mA x 20 and the higher 20 mA 20 mA x 10 Example 2 The normalized I result calculation Let the input mode 4 20 mA The normalized I result is calculated accordingly to the expression on page 23 so if lin 10 mA then 10 mA 4 mA 6 mA and this result should be divided by the with of input range 16 mA Finally the normalized result 6 16 0 375 In case when input current exceeds nominal measurement range calculations are similar For example if input current is equal 2 5 mA then I 2 5 4 16 0 0938 and if input current is equal 20 5 mA then I 20 5 4 16 1 0313 Example 3 The linear characteristic Let the input mode 4 20 mA and parameters Lo C and
31. le time timE elapses device starts to show the current value of input signal again a measure timE timE gt real measurement result time display value Fig 6 3 process of peaks detection 7 Device programming The device menu allow user to set all parameters connected to operation of measurement input control modes critical situations behaviour communication via RS 485 and access settings The meaning of the particular parameters is described in paragraph MENU DESCRIPTION 7 1 Programming menu To enter main menu being in the measurement mode operator must to press and hold at least 2 sec ESC MENU bution lf the user password is defined see parameter Scod operator have to enter correct one before proceeding to menu options Entering of the passwords is similar to the edition of numeric parameters see PARAMETERS EDITION however presently editing digit is showed only on the display other digits are replaced by sign After entering of last digit of the password first menu position will be displayed if the password is correct or warning Err in other case qc r_ ga E x N s i 2 7 D e matt i Gaus E A Ge Al td gt pressure measurement CIT 200 Functions of the buttons while sub menu and parameters choice MENU Selection of sub menu or parameter for editing Name of selected item sub menu or paramet
32. meters can be described as a sets of values a lists out of which only one of the options available on the list can be selected for the given parameter Options of switching parameter are selected using v keys Short pressing of ENTER causes in displaying of the acknowledge question SEt If key ENTER is pressed again the changes are accepted stored in EEPROM end the edition process finished Pressing the key ESC after SEt causes in cancelling of made changes and returning to menu Functions of buttons when editing numeric and switching parameters While editing numeric parameter e change of current flashing digit e slide change of value acceleration deceleration direction change While editing switch parameter selection of switch parameter lf numerical parameter is being edited a short press of ENTER button change edited position A long press of ENTER button at lest 2 sec causes of display a SEt ask which allow user to make sure if change of the parameter value is correct If switch parameter is being edited a short press of ENTER button causes of display a SEt ask When ENTER button is pressed again while SEt is displayed the new value of the parameter is stored in EEPROM memory Pressing this button operator can cancel the changes done up to now if were not approved by ENTER button after the SEt ask and come back to menu a z gt l q gt
33. rs Coordinate X defines the percentage ratio of input current to selected current range The X range 99 9 199 9 Coordinate Y defines displayed value for particular X value The Y value can be changed in range 999 9999 decimal point position depend on Pnt parameter menu inPt is User can not enter two points with the same value of X coordinate If user trays to do it Err warning is displayed To modify any defined point use EdtP option e To distinguish X and Y coordinates if X coordinate is displayed an additional decimal point on utmost right position is displayed e lf user defined characteristic is selected and if number of defined points is lower than 2 then warning Errc is displayed in measurement mode dELP ENTER long EdtP ENTER long this option allows user to delete any of the points of the user defined characteristic After selection current number of points of the user defined characteristic is displayed for about approx 1 5 sec After that device waits for selection of point being deleted by 4 v buttons The short pressing of button causes by switching between X and Y value of the displayed point The press press and hold at least 2 sec of ENTER button causes by displaying dEL ask If ENTER button is pressed again current point is deleted and new updated number of points of the user define
34. s menu or measure mode e cancel the changes made in parameter being edited Functions e start to edit the parameter e enter to the sub menu e confirmation of changes made in parameter being edited l Symbol used in the manual v Functions e change of the present menu e modification of the parameter value e change of the display mode 6 Principle of operation ENTER Symbol used in the manual ENTER After turning the power supply on device ID and software version are showed on the display next the controller goes to the measurement mode 6 1 Measurement mode In the measure mode the measurement results converted over selected characteristic are displayed on the LED display The measurement range equal to the nominal range is called nominal measurement range and the measurement range equal to the extended nominal range is called permissible measurement range Figure 6 1 6 2 BO SENSORS pressure measurem ent CIT 200 Lo r parameter Hi r parameter N nominal measurement range Va g Og i i 1 20 mA permissible measurement range Fig 6 1 definitions of measurement ranges in mode 4 20 MA If the result of measurement exceeds the permissible measurement range warning Hi or Lo is displayed rather than input signal depends on exceeded value see description of Lo r i Hi r parameters paragraph inPt menu Hi r parameter nominal mea
35. ster address O3h illegal data value O8h no write permission see mbAc parameter AOh exceed of upper border of input range 60h exceed of lower border of input range AOh and 60h codes can appear only during reg 01h is reading by 03h function read of a single register 10 3 Examples of query answer frames Examples apply for device with address 1 All values are represent hexadecimal Field description ADDR Device address on modbus network FUNC Function code REG H L Starting address address of first register to read write Hi and Lo byte COUNT H L No of registers to read write Hi and Lo byte BYTEC Data byte count in answer frame DATA H L Data byte Hi and Lo byte CRC L H CRC error check Hi and Lo byte 1 Read of the displayed value measurement CIT 200 device address 01h ADDR FUNC REG H L COUNT H L CRC L H 01 03 00 01 00 01 D5 CA a The answer we assume that the measure result is not out of range ADDR FUNC BYTE C DATA H L CRC L H 01 03 02 00 FF F8 04 DATA H L displayed value 255 no decimal point Decimal point position can be read from reg O3h CIT 200 b The answer if an error occur ADDR FUNC ERROR CRC L H 01 83 60 41 18 ERROR error code 60h bottom border of the measurement range is exceeded 2 Read of device ID code
36. surement range K wi M SO a 20 mA 0 mA permissible measurement range Fig 6 2 definitions of measurement ranges in mode 0 20 MA is If the measurement value do not exceeds permissible measurement range but displayed value exceeds range 999 9999 the warning Ov is displayed rather than the calculated result Input type range of displaying values characteristic of conversion decimal point position and measure filtering ratio are user configurable parameters All accessible parameters can be changed by entering the menu see DEVICE PROGRAMMING Use the local keyboard or the remote controller to do it Note all parameters can be remote changed via RS 485 interface I Configuration of the device via menu or RS 485 interface do not stops measures CIT 200 6 2 Detection of the peak values The CIT 200 controller is equipped with peaks detection function It can detect a peaks of the input signal and display their values Presets connected with this function are placed in HOLd menu see description of HOLd menu The detection of the peak can be done if the measured signal raises and drops of value at least equal to parameter PEA Detected peaks are displayed during the time defined by parameter timE If a new peak will be detected while one is displayed this new peak will be displayed and display time counter will be cleared Figure 6 3 If no peaks are detected whi
37. the segment defined by X1 and X2 will be selected X1 PL 0 Y1 PL 50 X2 PH 10 Y2 PH 30 and lp 0 For these values the displayed value W 69 C lin 20 5 mA and In 1 0313 because of the normalized I value is higher than 1 the segment defined by X10 and X11 will be selected and X10 PL 90 Y10 PL 900 X11 PH 100 Y11 PH 820 and 0 9 for these values the displayed value W 795 BD SENSORS pressure measu rement CIT 200 10 The Modbus protocol handling Transmission parameters 1 start bit 8 data bits 1 or 2 stop bit 2 bits are send 1 and 2 bits are accepted when receive no parity control selectable from 1200 to 115200 bits second MODBUS RTU compatible Baud rate selectable from Transmission protocol The device parameters and display value are available via RS 485 interface as HOLDING type registers numeric values are given in U2 code of Modbus RTU protocol The registers or groups of the registers can be read by 03h function and wrote by O6h single registers or 10h group of the registers accordingly to Modbus RTU specification Maximum group size for 03h and 10h functions can not exceeds 16 registers for single frame ug The device interprets the broadcast messages but then do not sends the answers 10 1 List of registers Register Write Range Register description 01h No 999 9999 Measurement valu
38. tions keep recommendations listed below Avoid common parallel leading of signal cables and transmission cables together with power supply cables and cables controlling induction loads e g contactors Such cables should cross at a right angle Contactor coils and induction loads should be equipped with anti interference protection systems e g RC type Use of screened signal cables is recommended Signal cable screens should be connected to the earthing only at one of the ends of the screened cable CIT 200 Inthe case of magnetically induced interference the use of twisted couples of signal cables so called spirals is recommended The spiral best if shielded must be used with RS 485 serial transmission connections In the case of interference from the power supply side the use of appropriate anti interference filters is recommended Bear in mind that the connection between the filter and the unit should be as short as possible and the metal housing of the filter must be connected to the earthing with largest possible surface The cables connected to the filter output must not run in parallel with cables with interference e g circuits controlling relays or contactors Connections of power supply voltage and measurement signals are executed using the screw connections on the back of the unit s housing max 2mm Fig 4 4 method of cable insulation replacing and cable terminals 0 1 5V 0 2 10V ETN GN
39. ton shortly after SEt is displayed After that device returns to the menu CIT 200 1 2 2 Numeric parameters slide change mode In slide change mode Edit Slid buttons and v has different functions To increase edited value press or press and hold 4 button only the increasing became quickest as long as button 4 is pressed To slow down the increasing button v can be used If v is pressed shortly and button is still pressed increasing slow down for a moment only if v is pressed and held while button is still pressed the increasing slow down and will be kept on lower speed To decrease edited value press or press and hold v button only The decreasing became quickest as long as button v is pressed To slow down the decreasing button can be used If 4 is pressed shortly and button v is still pressed decreasing slow down for a moment only if is pressed and held while button v is still pressed the decreasing slow down and will be kept on lower speed Press ENTER at least 2 seconds to accept the changes after that question Set is displayed and user must to confirm or cancel the changes To conform changes and story it in EEPROM press ENTER button shortly after SEt is displayed To cancel the changes press ESC button shortly after SEt is displayed After that device returns to the menu 7 2 3 Switch parameters LIST type Switch para
40. ud rate answer as quick as possible no additional delay 200c I Inthe most cases parameter rESP should be set to Std no additional delay Unfortunately for some third party RS converters rESP should be adjusted experimentally Table 7 1 contains most frequently used values bAud parameter 38 4 57 6 115 2 rESP parameter 100 20c DOC Tab 7 1 settings of rESP parameter 7 3 6 Edit parameter This parameter allows to change the edition mode of numerical parameters dig the change to by digit mode Slid slide change mode 7 3 7 dEFS parameter This setting allows to restore the factory settings of the device To get the access to this option special password is required 5465 next the device displays acknowledge question oEt Press ENTER to acknowledge the restoring of factory settings or ESC to cancel 7 3 8 SErv menu This menu contains the parameters for authorized service only To enter this menu proper service password must be entered Improper settings can causes of damage of the device CIT 200 7 4 Menu structure Measurement mode E Press and hold at least 2 seconds ota wate Parameter i ii edition ae re HOLd modE g j Parameter timE aman ition pre f Hdis _ we Addr ceo de mbAc me P
41. ueeseeeesseeecseessseeesaes 31 11 Default and user s settings liSt cece ceececeeeeceeeeseeeeseeceseeeeseeeeseeeeseueeseueeseneeseueeseneeseaees 34 ND oa lt e test ters rennet E E E E T EE E E E E E E E 34 To Waranty COLON ta tence E ee ee eee 34 3D SENSOR CIT 200 Explanation of symbols used in the manual This symbol denotes especially important guidelines concerning the installation AN and operation of the device Not complying with the guidelines denoted by this symbol may cause an accident damage or equipment destruction IF THE DEVICE IS NOT USED ACCORDING TO THE MANUAL THE USER IS RESPONSIBLE FOR POSSIBLE DAMAGES IF This symbol denotes especially important characteristics of the unit Read any information regarding this symbol carefully 1 Basic requirements and user safety The manufacturer is not responsible for any damages caused by inappropriate installation not maintaining the proper technical condition and using the unit against its destination Installation should be conducted by qualified personnel During installation all available safety requirements should be considered The fitter is responsible for executing the installation according to this manual local safety and EMC regulations The unit must be properly set up according to the application Incorrect configuration can cause defective operation which can lead to unit damage or an accident If in the case of a defect of unit operation there
42. urement range po gpg m 4 ON measurement result is displayed i 4 display regardless on nominal range exceeding display message Lo message Hi Fig 7 1 example of definition of permissible range of input signal Lo r and Hi r parameters 4 20 mode The Lo r parameter is important if input is set to 4 20 1 5 or 2 10 mode only and determines lower border of the permissible range If input is set to 0 20 0 5 or 0 10 mode then lower border of the permissible range is always 0 For example if input is set to 4 20 mode then lower border is calculated due to expression Inin 4 MA 4 mA x Lo r The Lo r value can be set from 0 to 99 9 Parameter Hi r determines the upper border of the permissible range accordingly to the expression for all modes For example if input is set to 4 20 mode then upper border is calculated due to expression Imax 20 MA 20 mA x Hi r The value of Hi r can be set from 0 to 19 9 In example no 1 of the DISPLAY VALUES CALCULATION paragraph the procedure of the permissible input range determining is presented in details IEY lf the measurement value do not exceeds permissible measurement range but displayed value exceeds range 999 9999 the warning Ov is displayed rather than the calculated result 7 3 2 bri parameter This parameter allows user to set bright of the L
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