Operating ma Operating manual
Contents
1. modE t on toFF unit and AL are connected with both SEtP and SEt2 thresholds While the controlling process the relay output changes his state depends of both SEtP and SEt2 thresholds in similar way as it was described in one threshold mode lf two threshold mode is used modE parameter defines state of the relay output when the input value occurs in a particular zone defined by border values of both thresholds The relay can be turned on if the input value is contained in zone A modE in or zone B modE out and turned off if it is contained in the second one Figure 6 7 I The sequence of thresholds SEtP and SEt2 can be set in any order due to the control of relay outputs is done depend on difference between thresholds values zone A and outside of threshold values zone B 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 Some of the parameters can be accessed without menu entering quick view mode After pressing or v button name of the threshold e g rEL1 and his value will be displayed on the display in alternating mode If 4 or v will be pressed in 5 sec again the next2. sign on first digit to change value use and v buttons Threshold is the medium value of relay hysteresis second threshold of the relay range 999 9999 Negative values can be input by selecting a sign on first digit to change value use 4 and v buttons This threshold is accessible when modE parameter is set to in or out value Threshold is the medium value of relay hysteresis hysteresis of relay range 0 999 Full hysteresis of the relay is equal to 2x HYSt parameter The relay state can change when an input signal is out of threshold hysteresis to threshold hysteresis zone is Presented parameters should be set to ensure that SEtP HYSt SEt2 HYSt SEtP HYSt or SEt2 HYSt do not exceeds the measure range Additionally in two threshold mode modE in or out the hysteresis for both thresholds must not cover each other in other case relay cannot change his state modE 23 relay operation mode noAC the relay is not active permanent turned off on one threshold mode the relay is turned ON when input signal exceeds SEtP HYSt value and is turned off back when the input signal became lower than SEtP HYSt OFF one threshold mode the relay is turned OFF when input signal exceeds SEtP HYSt value and is turned on back when the input signal became lower tha
3. Operation of ENTER button depend on present menu position ENTER 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 upper MENU level menu or measurement mode I 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 bu
4. BDO SENSORS pressure measurement Operating manual Process Display with Contacts U I input CIT 250 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 250 Table of Contents 1 Basic requirements and user safety cccccccccceeecceeeeceeeeceeeeseeeeseeeeseeeseaeeeeueeseaeeseeeeseeeesaeeeeas 3 A Device MAS VA O N esrin a i pend agit aadiete gare A EE 6 AM a MIMO AC VINO arcane ee E case eros cate wre weedeat arcs cae 6 Ab GNSS PIMONY egcerie setter tne porcine tear aera ey eine een tiesnins nel snls ontne Gone fondan dias Fistor Giotesieaee iaGesietemaienainemeaseneseae dibs 6 Eh OUI MS CHOU ME WO sae ert ote cepa era ence see tect cletserie ete erat ere arte ieeeres ereneren ee eeenenece 8 44A INEM ING C tetas ania ayantrann eaee ca an aetea ternenatoneyeau onanqeasesionapiarosioenae ution aawasneusamcmtnnyawosueebanutionstawasentnre 14 5 Front panel description ccccccccecccseeeceececeeeecseecsueecsauecseeecueeeseeeesueeeseessueeeseeesseeeeseeessags 14 G mil gle O oue lime 6 1 2 ION eeerenee ner eee en ren eer ee ee 15 6 1 Measurement mode ccccceeccceececeeeeeeeeeseeeeeaeeesaeeesaeeesaeeeseeeeseeeesseeessaeesseeesseeessneesaeeeeas 15 6 2 Detection
5. OE WC este nce dc ated enced eepennseccedecdiedaennacatacecaeanecedeatuecssecdane sees 31 Fs NINE TAS CEU este cc tet re rae E ed ects E E une Peeiecineneeco mee 32 S meam EE casera tsetse ctccic estate E tet sic cta acts E E ioscan eee ace 34 9 Over current protection cece cecccceccceeeeeeeeeceeeeeseeeeseeeeseeeeseeeeseeeesaeeesaueeseeeseeeseeeesseeeseeeesass 34 10 Displayed values calculation ccccceccccsececeeeeceeeceeeeceueeseeeeseueeseueeseueeseueesneesueeseeesenees 34 10 1 Additional calculations used conversion characteristic cccccseeceseeeceeeceeeaeeeseees 34 10 1 1 Linear CNAracteriStiC ccccccccccceccceeceeeceeceeeceeeceeeeeesaueceuecaeesaeeseeseuesaeeseeeseesseeegas 35 1O 22m so Fe forge 92 g2 a 2 g IG eS 35 10 1 3 Square root characteristic ccccecccceecceceeceeceeeeeceeeeseeecesseeesaueeesaaueesseeesseeeesaeees 36 10 1 4 User defined characteristic cccccccccseeccseeeeseeeeeeeeeseeeeseeeeseeesseeeseeeseeesseeesaeeeens 36 10 2 Examples of calculations ana cine dasneengee entice sanciennn tienen cepsenp eens cee wees nn eeneessane enna eeneenanere 37 11 The Modbus protocol Nandling ccccccccecccceeeeceeeeceeeeseeeeseeeeseeeeseeeeseeeeseueeseeeeseneeseeeesseees 40 111 CISTO TOISET S ieaie ae eE Ee A E aAa AERE rE a eR aaae aie 40 11 2 Transmission errors GCOSCHIDUOIN senteuneesacaceeccmsncinacoeaceunaecenecanacmtcanacacmaaadtencnadenenscen 43 11 3 Exa
6. SE parameter i x 4 a Ks AN Sceeus HYS parameler a zone A eee Bg oo i on ni oi oe Ri en sn pr we ges gsc cba ee ete y 1 4 0 on rr bt ee er bee rte ee ee eRe ee ee ee ee zone B t t b relay state modE in ton 0 toFF 0 closed time c relay siate i modE out ros t on 0 i i I i toFF 0 relay state d modE in ton gt 0 toFF gt 0 ar aa ae ala al time toFF parameter ton parameter l I l l i I closed l e relay statek t on parameter modE out uu i ton gt 0 toFF gt 0 e e e time A l f toFF parameter ton parameter toFF parameter Description A B C D E points where measured signal exceeds border values expected value allowed deviation Bon Borr Con Corr Eon Eorr relays state changes moments for t on gt 0 toFF gt 0 ta teg tc to time periods while input signal is in zone A or zone B Fig 6 7 principle of LED relay output operation for two thresholds mode 19 www bdsensors com CIT 250 Figure 6 7 presents the principle of relay outputs operation for two thresholds mode and an example values of other parameters In this mode parameter SEt2 is accessible in common with SEtP this parameter describes a second threshold of the relay output The parameters HYSt
7. The critical situation is slowly detected so it is impossible to predict the relay state in that situations BDISENSORS CIT 250 lf parameter AL on the relay will be turned on in the critical situations even if his parameter modE noAC 7 3 2 inPt menu This menu presets the measurement input tYPE CHAr type of the input sensor This parameter can be set to values 0 20 4 20 current inputs 0 10 2 10 0 5 1 5 voltage inputs Displayed values are defined by parameters Lo C Hi C or by user defined characteristic points and parameter Pnt this option presets type of the conversion characteristic and can be set to Lin oo linear When one of those characteristics is chosen Sqr P ee 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 3s lf user defined characteristic is selected and if number of defined points is lower than 2 then warning Errc is displayed in measurement mode The process of displayed result calculation is described in details in DISPLAY VALUES CALCULATION paragraph FILT Pnt this parameter sets filtration rate It can
8. X value The Y value can be changed in range 999 9999 decimal point position depend on Pnt parameter menu inPt ap User cannot 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 If user defined characteristic is selected and if number of defined points is lower than 2 then warning Errc is displayed in measurement mode dELP EdtP 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 v buttons The short pressing of ENTER button causes by switching between X and Y value of the displayed point The long 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 defined 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 displa
9. l i ooi time b relay state a o modE on i 1 ton closed toFF 0 1 time c relay state a modE oF F ton 0 toFF U d relay state on ane closed 1 ton gt 0 i toFF gt 0 Lag te i e ooi time Y poff a w ho os ton i orr A l relay state e modE oFF ae a ee parameter palamelr I closed os ton gt 0 open toFF gt 0 3 i br me i lime he tof F i i on a parameter parameter Description A B C D points where measured signal exceeds border values expected value allowed deviation Bon Borr Don Dorr relays state changes moments for t on gt 0 toFF gt 0 ta teg tc to time periods while input signal is in zone A or zone B Fig 6 6 principle of LED relay output operation for one threshold mode Parameter SEtP sets a threshold of the relay and parameter HYSt sets a hysteresis of the relay Figure 6 6 a The relay can change his state only when input value exceeds over or under border value and ta tg tc tp times Figure 6 6 are bigger than the time defined by parameters t on toFF and unit Border values means values equal threshold hysteresis and threshold hysteresis respectively lf t on and toFF parameters are set to 0 then the relay state will be changed as soon as input value exceeds any of the border values see po
10. threshold will be displayed else the device comes back to the measurement mode If a free access is enabled see description of SECu menu user can change the value of particular threshold pressing button ENTER see PARAMETERS EDITION is If particular parameter has been changed and confirmed in quick view mode its new value is displayed in alternating mode with parameter name by few seconds Confirmed changes may be checked or user can switch viewed parameter pressing or v button 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 menu SECU 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 AN Pay attention when device parameters are being changed If it is possible turn off controlled installation machine CIT 250 Functions of the buttons while sub menu and parameter choice Selection of sub menu or parameter for editing Name of selected item sub AN V4 menu or parameter is displayed
11. 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 250 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 The device can be equipped with one or two relay or OC type outputs Device CIT 250 is equipped with RS 485 Modbus RTU communication interface and sensor supply output The meter can be ordered in two power supply versions CIT 250 can be used for controlling and regulation of processes need proportional and threshold control like temperature processes heating or cooling valves controlling or other 3 Technical data Power supply voltage Standard 85 260 Vacipc option 19 50 Vpc 16 35 Vac External fuse required T type max 2A Power consumption max 4 5 VA or W Current voltage input 0 4 20 mA 0 1 5 V 0 2 10 V Current input resistance lt 65 Q typical 55 Q Voltage input resistance gt 50 kQ Accuracy 25 C 0 1 FSO tolerance band 0 50 C max 0 25 FSO Display range Accepted prolonged input overload Contact Switching voltage Switching current Transducer supply Comm
12. 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 Imin 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 I 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 7 3 3 bri parameter This parameter allows user to set bright of the LED display bright can be set to conventional values from 1 to 8 7 3 4 CoL menu This menu contains settings related to signalisation via display colour This kind of signalisation consist in change of display colour from basic colour to
13. V range 3 2 10 V range 4 0 5 V range 5 1 5 V range CHAr parameter in InPt menu characteristic type p Yes nee 0 linear 1 square 2 square root 3 user defined 12h Yes 0 5 FILt parameter in InPt menu measurement filtering rate 13h Ves 0 3 Pnt parameter in InPt menu the copy of 03h register decimal 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 20F7h Device identification code ID i bAud parameter in rS menu baud rate 22h Yes OT 0 1200 baud 1 2400 baud 2 4800 baud 3 9600 baud 4 19200 baud 5 38400 baud 6 57600 baud 7 115200 baud ip c af gt aa g Bl gt ed God N Nl SO ER u EN TL e ts CIT 250 Register Write Range Register description 93h4 Vee 0 4 mbAc parameter in rS menu permission to write registers via E RS 485 interface O write denied 1 write a
14. be set to values from 0 no filtration to 5 strongest filtration time window about 2 sec decimal point position It can be set to one of lh 0 74 0 0 74 0 00 0 000 Decimal point position is changed by v buttons Lo C 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 4 v buttons 3s If 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 25 www bdsensors com CIT 250 AddP 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 parameters edition 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
15. 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 10 Displayed values calculation For simplicity of examples it is assumed that current input is selected and all calculations are related to this input 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 for 0 20 mA range and 16 mA for 4 20 mA range So normalized result can be expressed by expressions a 4 I 16 for 4 20mA_ range y ali 0 20 4 eae n550 foi 20mA range where lino means input current in mA and In normalized result 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 In 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
16. gs Fs Loc Hi C 0 4 8 12 16 20 0 4 8 12 16 20 Input current mA Input current mA Fig 10 2 normal Lo C lt Hi C and inverted Lo C gt Hi C characteristic 35 www bdsensors com CIT 250 10 1 3 Square root characteristic The normalized result is rooted and further conversion is done as for linear characteristic 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 uo e Displayed value Displayed value Loc a Hi C 0 4 8 12 16 20 0 8 12 16 20 Input current mA Input current mA Fig 10 3 normal Lo C lt Hi C and inverted Lo C gt Hi C characteristic 10 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 a
17. is equal 1 125 In such cases presented expressions are still correct 10 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 CIT 250 10 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 Expression presented below shows the manner of result calculation W I X H iC Lo C Lo C where W means the displayed value I The value of the Lo C parameter can be higher than the value of Hi C parameter In such a case for an increasing value of input current the displayed value decreases Hic Hi C Loc F D RE gS as oS 5 m Loc amp B 12 16 20 Input current mA am fa 8 12 16 20 Input current mA Fig 10 1 normal Lo C lt Hi C and inverted Lo C gt Hi C characteristic 10 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 I x Hi C Lo C Lo C where W means the displayed value a D EP RE zs
18. mode dig 31 13 Disposal The device must be disposed according to the European Directives VEE 2002 96 EC Nz and 2003 108 EC on waste electrical and electronic equipment Electrical y and electronic waste equipment may not be disposed by domestic refuse 14 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 47 www bdsensors com CIT 250 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 i
19. on or off modE oFF when the input signal value is contained in Zone A If two thresholds are used Figure 6 5 the relay will be turned on when value of input signal is contained in zone A modE in or zone B modE out and turned off if the signal is contained in the second one state of relay LED _ sEtP parameter measure WA HYSt parameter Fig 6 4 one threshold control of the relay LED outputs state of relay LED SEtP or SEt2 parameter l r a l k measure sA HYS paramet r Fig 6 5 two threshold control of the relay LED outputs is The relay outputs and LEDs named R can be controlled depend on both the current value and the peak value when peak detection is active of the input signal 17 www bdsensors com CIT 250 6 3 1 One threshold mode Figure 6 6 presents the principle of relay outputs operation for one threshold mode and an example values of other parameters measured displayed value ty L t signal to BEP parameter i p B gt i p expected signal value p l 3 7 I i I l a zone A lt tg Bon i j A B i i Seed ob oe eo ee i eg E EE fee ep et Se ey ey i 1 g OOTAN OS ened he Mosca ceca E E E EE E E ae E S E T a a i k i i l i i i A a ee a H 4 zelaren etnan UY ka 5 eain HYS parameter arm a D OFF allowed signal zoneB s 1 i i ik ere i i Io 1 Dh deviation I
20. 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 users 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 In order to assembly the unit a 69 x 33 mm mounting hole Figure 4 1 must be prepared The thickness of the material of which the panel is made must not exceed 5 mm When preparing the mounting hole take the grooves for catches located on both sides of the housing into consideration Figure 4 1 Place the unit in the mounting hole inserting it from the front side of the panel and then fi
21. 0 0938 W 287 C lin 20 5 mA and hn 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 0 375 Accordingly to expression on page 37 for linear characteristic sqrt 0 375 x 1200 300 919 and next the Lo C value is added to the result so the displayed value W 919 300 619 b lin 2 5 mA and I 0 0938 normalized result is negative so the displayed value is equal to Lo C parameter W Lo C 300 c lin 20 5 mA and h 1 0313 W 1223 BDISENSORS CIT 250 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 M
22. A and I 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 36 X6 PL 30 Y6 PL 30 X7 PH 40 Y7 PH 80 and lp 0 3 the displayed value W I I X LY PH VAPEN 109 PL X PH X PL 80 30 0 375 0 3 x x 100 30 67 Al 40 30 b lin 2 5 mA and I 0 0938 because of the normalized value is lower than 0 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 I 1 0313 because of the normalized 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 lp 0 9 for these values the displayed value W 795 Calculated lout exceeds the output working range 3 21 mA so current output will generate current equal to the upper border of range defined by parameter Lo r i Hi r it means 21 mA 39 www bdsensors com CIT 250 11 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 Baud rate selectable from 1200 115200 bits sec Transmission protocol MODBUS RTU compatible The device parameters and disp
23. E 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 H r1 relay LED outputs R1 R2 operation mode H r2 rEAL relay LED operates depend on the current value HOLd relay LED operates depend on the peak drop value 7 3 6 SECu menu This menu contains presets connected with availability of other parameters Scod 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 I The one use password can be used ONE TIME ONLY it is impossible to use it again The one use password can be restored by Service Division only Art this option permits user on or prohibits OFF to modify the thresholds A r2 of the relays LEDs R1 R2 without knowledge about user password 29 www bdsensors com CIT 250 7 3 7 rS menu This menu is connected with RS 485 interface and sets hi
24. ST type Switch parameters 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 DE 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 they were not approved by ENTER button after the SEt ask and come back
25. active colour in defined situations for example after change of R1 state 27 www bdsensors com CIT 250 SCoL basic colour the second one becomes active colour QrEE main colour is green rEd main colour is red Cri control the display colour according to relay R1 R2 separate state Cr2 OFF control for particular relay is off on control for selected relay is on the display will change its colour after selected relay becomes active C AL control the display colour according to alarm situations JJ OFF control is off on control is on the display will change its colour after alarm situation occurs C Pr this setting enables additional threshold for display colour controlling detailed conditions of this control are defined by dir SEtP and HySt parameters of COL submenu OFF no additional threshold on additional threshold enabled the display will change its colour after result satisfy conditions defined by dir SEtP and HySt parameters of COL submenu JJ dir this parameter defines the direction of result changes activating change of display colour morE display will change its colour after the result is higher than threshold hysteresis LESS display will change its colour after the result is lower than threshold hysteresis SEtP additio
26. confirmation of changes made in parameter being edited Symbol used in the manual 4 v Functions e change of the present menu e modification of the parameter value e change of the display mode BDISENSORS CIT 250 6 Principle of operation 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 Lo r parameter Hi r parameter Pa nominal measurement range FA D n i a a E a 4 mA 20mA permissible measurement range Fig 6 1 definitions of measurements 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 inPE menu Hi r parameter ra ral A Fa nominal measurement range K i id a l I 0 mA 20mA permissible measurement range Fig 6 2 definitions of measurements ranges in mode 0 20 MA Is Ifthe measurement value do not exceeds permissible measurem
27. ctromagnetic disturbances is lower and the life of relay contacts rises S3DISENSORS CIT 250 a Fig 4 11 examples of suppression circuit connection a to relay terminals b to the inductive load voltage input 24V Fig 4 12 example of OC type outputs conection 13 www bdsensors com CIT 250 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 5 Front panel description Do display Thresholds exceeding Vu Eafe LED indicators R Vv ca programming pushbuttons alarm LED indicator AL Symbols and functions of push buttons ESC Symbol used in the manual ESC MENU MENU Functions e enter to main menu press and hold by at least 2 sec e exit the current level and enter to previous menu or measure mode e cancel the changes made in parameter being edited Symbol used in the manual ENTER Functions e start to edit the parameter e enter to the sub menu e
28. ed OFF 28 C r2 Change display colour after R2 is activated oFF 28 C AL Change display colour after alarm occurs oFF 28 C Pr EA additional threshold while signalisation via oFF 28 dir i veiling result changes activating change of more 28 SEtP Threshold of display colour control 500 28 Hyst Hysteresis of display colour control 0 28 ae a he ce cer viataanioes on ee CIT 250 Parameter Description Default value User s value za ae Configuration of peaks detection function HOLd menu modE Kind of detected changes norm 29 PEA Minimum detected change 0 0 29 timE Maximum time of peak displaying 0 0 29 HdiS The type of displayed value HOLd 29 Hri Source of relay R1 and LED R1 control rEAL 29 H r2 Source of relay R2 and LED R2 control rEAL 29 Settings of access to the configuration parameters SECu menu Art Permission to changes of relay R1 threshold an 29 without of the user password knowledge Aro Permission to changes of relay R2 threshold an 29 without of the user password knowledge RS 485 interface configuration menu rS Addr Device address 0 30 bAud Baud rate 9 6 30 mbAc Permission to changes of configuration registers on 30 mbtO Maximum delay between received messages 0 30 rESP Additional delay of answer transmission Std 30 Configuration of numerical parameters edition Edit Numerical parameters edit
29. ent range but displayed value exceeds range 999 9999 the warning Ov is displayed rather than the calculated result In the measurement mode user can check main thresholds values After pressing or v button name of the threshold e g rEL1 and his value will be displayed on the display in alternating mode If 4 or v will be pressed in 5 sec again the next threshold will be displayed else the device comes back to the measurement mode If a free access is enabled see description of SECu menu user can change the value of particular threshold pressing button ENTER see PARAMETERS EDITION 15 www bdsensors com CIT 250 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 ss Configuration of the device via menu or RS 485 interface do not stops measures 6 2 Detection of the peak values The CIT 250 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 a
30. ent 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 answer as quick as possible no additional delay 10c 20c 50c 100c 200c answer delayed of 10 20 50 100 of 200 chars respectively where one character time depends on selected baud rate 3s 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 OG 115 2 rESP parameter 4 Oc 20C 50c Fig 7 1 Settings of rESP parameter BDISENSORS CIT 250 7 3 8 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 9 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 10 SErv menu This menu contains the parameters for authorized service only To enter this menu pro
31. er pairs of X Y coordinates of points l no 2 19 of the user defined characteristic 96h Yes 999 1999 The value of X coordinate of point no 20 of the user defined characteristic expressed in 0 1 97h Yes 999 9999 The value of Y 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 calculation of result The coordinates of any point can be changed at any time 3DISENSORS CIT 250 11 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 O3h 06h and 10h are available 02h illegal register addr
32. ess 03h illegal data value 08h 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 11 3 Examples of query answer frames Examples apply for device with address 1 All values are represent hexadecimal Field description ADDR FUNC REG H L COUNT H L BYTE C DATA H L CRC L H Device address on modbus network Function code Starting address address of first register to read write Hi and Lo byte No of registers to read write Hi and Lo byte Data byte count in answer frame Data byte Hi and Lo byte CRC error check Hi and Lo byte 1 Read of the displayed value measurement CIT 250 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 03h 43 www bdsensors com CIT 250 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 i
33. expressed in tenth of seconds E or tenth of minutes depend on unit parameter register no 35h 35h V s O1 unit parameter in rEL1 menu dii 0 seconds 1 minutes 36h Yes 0 2 AL parameter in rEL1 menu 0 no changes 1 on 2 off 37h Yes 999 9999 SEt2 parameter in rEL2 menu no decimal point included 38h Yes 999 9999 SEtP parameter in rEL2 menu no decimal point included 39h Yes 999 999 HySt parameter in rEL2 menu no decimal point included modE parameter in rEL2 menu 3Ah Yes 03 0 noAC mode 1 on mode 2 oF F mode 3 in mode 4 out mode 5 modb mode t on parameter in rEL2 menu expressed in tenth of seconds or PRN MES PERRA tenth of minutes depend on unit parameter register no 3Dh 3Ch Yes 0 999 toFF parameter In TEL2 menu expressed in tenth of seconds or tenth of minutes depend on unit parameter register no 3Dh 3Dh Yes 0 1 unit parameter in rEL2 menu _ 0 seconds 1 minutes 3Eh Yes O2 AL parameter in rEL2 menu 0 no changes 1 on 2 off 41 www bdsensors com CIT 250 Register Write Range Register description 3Fh Yes 999 9999 SEt2 parameter in rEL2 menu no decimal point included 50h Veg 0 4 modE parame
34. f a defect of unit operation there 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 3 condensation or icing www bdsensors com Do not use the unit in areas exposed to direct sunlight CIT 250 A 2 General characteristics The CIT 250 meter is equipped with one current input 0 20 4 20 mA and one voltage input 0 5
35. g O3h 1 decimal point position 0 0 3 There is no full implementation of the Modbus Protocol in the device The functions presented above are available only 45 www bdsensors com CIT 250 12 Default and user s settings list Parameter Description Default value User s value poe Parameters of relay R1 operation rEL1 menu SEtP Relay R1 threshold 20 0 23 SEt2 Relay R1 second threshold 30 0 23 HYSt Hysteresis of relay R1 0 0 23 modE Operation mode of relay R1 in 23 ton Turn on delay of relay R1 0 0 24 toFF Turn off delay of relay R1 0 0 24 unit Unit of t on toFF parameters of relay R1 SEC 24 AL Reaction for critical situation of relay R1 OFF 24 Configuration of measurement input inPt menu tYPE Input mode 4 20 25 CHAr Conversion characteristic mode Lin 25 Filt Filtering ratio 0 25 Pnt Decimal point position 0 0 25 Lo C Minimum displayed value for nominal range 000 0 25 Hi C Maximum displayed value for nominal range 100 0 25 Lor Extension of the bottom of the nominal input range 5 0 26 Hi r Extension of the top of the nominal input range 5 0 26 Display parameters bri Display brightness bri6 27 Signalization via colour of the display CoL menu SCoL Basic colour of the display grEE 28 Cri Change display colour after R1 is activat
36. ints A and C Figure 6 6 a b lf values of t on or and toFF are positive then relay state will be turned on if the input value exceeds the border values and stay bigger or lower during at least t on see points Bon Don Figure 6 6 a d e Similarly the relay will be turned off if time toFF elapse since the input signal value exceeds any of the border values see points Boer Doer Figure 6 6 a d e BDISENSORS CIT 250 lf ta tg tc or tp When input signal stay in Zone A or zone B are lower than parameters t on or toFF the relay will not change his state see points A and C Figure 6 6 a d e The state of relay output while the input value exceeds the border values points A B C D is described by parameter modE The relay can be turned on modE on or turned off modE oFF when input signal value is contained in zone A Figure 6 6 a The parameter AL allow user to set the relay output behaviour in critical situations e g input values exceeds permissible measurement range User can select that the relays will be turned on turned off or not changed in critical situations All parameters connected with relay Outputs are described in paragraph rEL1 menu 6 3 2 Two thresholds mode displayed value t t P D or al measure t zone B d signal F a EE ee EEEE HYS pararmeler 7 SEtP or
37. lay 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 cannot exceeds 16 registers for single frame gt The device interprets the broadcast messages but then do not sends the answers 11 1 List of registers Register Write Range Register description 01h No 999 6000 Measurement value 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 eon ee OS lo 0 4 0 0 2 0 00 3 0 000 State of the relays and alarm LED binary format 1 on 0 off 00000000 000edcba 04h Yes see descr ja relay R1 b relay R2 c relay R3 d relay R2 e alarm LED if written only a b c d bits are important others are ignored these bits allows user to control the relays via RS 485 interface O6h No 999 9999 Peak drop value no decimal point tyPE parameter in InPt menu nominal input range O 0 20 mA 10h Yes 0 5 range 1 4 20 mA range 2 0 10
38. le insulation replacing and cable terminals AN All connections must be made while power supply is disconnected 9 www bdsensors com CIT 250 n max m supply optional gt GND DATA depending on version gi j a gart a H fo R1 optional 0 1 5V 0 2 10V Fig 4 5 Terminals description relay outputs Ay Power TARN Da RS 485 supply optional Tiea GND depending on version OC2 _ _ _ eT EelTe OC1 OC2 oct m fa Umax 30V DC optional 0 4 20mA Imax 30mA e Pmax 100mW 0 1 5V 0 2 10V Fig 4 6 terminals description OC type outputs spe ee gc ie E A interna ly connected Fig 4 7 connection of 2 wire current converters BDISENSORS internally connected Fig 4 9 connection of voltage converters CIT 250 www bdsensors com CIT 250 Depending on version 85 230 260V AC DC or 19 24 50V DC 16 24 35V AC L N Fig 4 10 connection of power supply and relays AN Contacts of relay outputs are not equipped with spark suppressors While use the relay outputs for switching of inductive loads coils contactors power relays electromagnets motors etc it is required to use additional suppression circuit typically capacitor 47 nF min 250 Vac in series with 100R 5W resistor connected in parallel to relay terminals or better directly on the load In consequence of using the suppression circuit the level of generated ele
39. lin 10 mA then 10 mA 4 mA 6 mA and this result should be divided by the width 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 inout 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 Hi C equal to 300 and 1200 respectively The calculations will be done for there different input currents from example 2 37 www bdsensors com CIT 250 a lin 10 MA and I 0 375 Accordingly to expression on page 36 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 I 0 0938 W 441 C lin 20 5 mA and 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 input currents from example 2 a lin 10 MA and I 0 375 Accordingly to expression on page 35 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
40. llowed Parameters of SECU menu binary format 0 oFF 1 on 24h Yes see descr bit O A r1 parameter bit 1 A r2 parameter bit 2 A r3 parameter bit 3 A r4 parameter 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 mbtO parameter in rS menu maximum delay between 27h Yes 0 99 received frames O no delay checking 1 99 maximum delay expressed in seconds bri parameter display brightness eu ane ERS 1 the lowest brightness 8 the highest brightness DEh Yes 0 1 SCoL parameter in CoL menu main colour of display 0 green 1 red Edit parameter numerical parameters edit mode ee ues Sali lloi dig mode 1 SLid mode 30h Yes 999 9999 SEtP parameter in rEL1 menu no decimal point included 31h Yes 999 999 HySt parameter in rEL1 menu no decimal point included modE parameter in rEL1 menu 32h Yes 0 3 0 noAC mode 1 on mode 2 oFF mode 3 in mode 4 out mode 5 modb mode 33h Yes 0 999 ton parameter in rEL1 menu expressed in tenth of seconds or tenth of minutes depend on unit parameter register no 35h 34h Vas 0 999 toFF parameter in rEL1 menu
41. mples of query answer frames ccceccceeccceeeeceeeeseeeeseeeeeeueeseeeeseeeeseueeseeeeseeesaes 43 AZ Default and User SSO UNC S MS Ue scicb slaecs ateetaesedesee iin iE 46 T DEDO Sal a E E E E 47 14AN arant CONONO NS serpere ea E EER EER E EE EREE EEEN EAE ERROSE EREEREER 47 3D SENSOR CIT 250 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 o
42. 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 A g g Ru t gt Ci ke samen j m E b A CIT 250 Due to possible significant interference in industrial installations appropriate meas
43. n SEtP HYSt GGS In two threshold mode the relay is turned ON when the input Signal is bigger than lower threshold HYSt and lower than bigger threshold HYSt and turned off when the input signal is contained in the second zone The bigger threshold means bigger one of SEtP and SEt2 thresholds the lower threshold means lower one of SEtP and SEt2 thresholds www bdsensors com CIT 250 out two threshold mode relay is turned ON when the input value is bigger than bigger threshold HYSt and lower than lower threshold HYSt and turned on when the input signal is contained in the second zone The bigger threshold means bigger one of SEtP and SEt2 thresholds the ower threshold means lower one of SEtP and SEt2 thresholds modb the relay is controlled via RS 485 interface independently on the input signal ss e LEDs light when relays are closed independently of relays mode e When power supply fail unit do not store relays state selected by RS 485 interface ton turn on delay time the relay is turned on with delay equal t on if the input value exceeds appropriate border value defined with threshold and hysteresis at least t on time t on range 0 99 9 defined with 0 1 sec resolution Unit of this parameter is set by unit parameter tOFF turn off delay time the relay is turned off
44. nal threshold value range 999 9999 Negative values can be input by selecting a sign on first digit to change value use and v buttons Threshold is the medium value of relay hysteresis HYST Hysteresis of colour indication range 0 999 Full hysteresis is equal to 2x HYSt parameter The display colour can change when an input signal is out of threshold hysteresis to threshold hysteresis zone I Presented parameters should be set to ensure that SEtP HYSt and SEtP HYSt do not exceeds the measure range CrES permission to use any local key to acknowledgement of display colour change Acknowledgement causes clear of all events generating display colour changes to active colour and restores basic colour of the display JJ OFF acknowledgement disabled acknowledgement enabled JJ on BDISENSORS CIT 250 7 3 5 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 DEA 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 3 tim
45. ncorrect statements and their consequences liability cannot be assumed by BD SENSORS Technical modifications reserved Telefon 49 0 92 35 98 11 0 www bdsensors com CIT 250 E 040210 Telefax 49 0 92 35 98 11 11 info bdsensors de NIG f Vi Gad 3 ej m _ i u pos av ME B 1m jt
46. nd 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 while time timE elapses device starts to show the current value of input signal again The relays LEDs can be controlled depend on the current value of input signal or the peak value see HOLd menu a4 Measure timE timE real measurement result time display value Fig 6 3 process of peaks detection SENSORS i amp E Si S3 SRI a numero SENSORS CIT 250 6 3 Control of the relay outputs The control of the object measured signal is realized via relay outputs Front panel LEDs named R indicates the state of particular relay output Is If device is not equipped with one or more relay outputs menus refer to this relays are available but apply to LED indicators only In such case LEDs indicates exceeding of particular thresholds Modes of the control can be changed depend on the values of parameters SEtP SEt2 HYSt modE t on toFF unit and AL Depend on modE parameter relays can be not used or controlled over one or two thresholds values If one threshold is used Figure 6 4 the relay can be turned on modE
47. nd the normalized result for the point PL as lp in this example lp In PL 0 5 The displayed result is calculated accordingly to the expression Y PH Y PL W 1 1 X XPH X PD 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 3 If the 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 I gt 1 then segment defined by points X PL 90 0 X PH 100 0 will be used CIT 250 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 a ee ee a et X 35 0 X PL 50 0 Displayed value Input current mA Fig 10 4 example of user defined characteristic 10 2 Examples of calculations Example 1 Selection of the permissible input range 4 20 mode If 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 34 so if
48. of the peak values cccccceccceecceeeeceeeceeeeaeeeceeeseueeseeeseeeseueeseeeseeseueeaeeeseeesees 16 6 3 OM OMOn te relay OUOUN S sarp ce sesegesetiase seceecacigeceticeneeeetace Seceue deissneueceveseueeseeeeeecssesesae 17 6 3 1 One threshold mode cccsecccseecceececeececeuceceuceceusecsuceceusessucessueessueessusessueessesenaes 18 Oe WO neS Nod ModE ae 19 x WEVICS PO AMNING eaae E E E E 20 Fa Ma We VOC eG MONU eeren E E E ureueitelwinseesnne 20 Tel AN SES CON cetera A E secede E A ce etal oie ieee etcetera E dee totes adoleedose 21 7 2 1 Numeric parameters digit change MOE ccececseeeeeeeeeeeeeeseeeeneeeeseeeeseeeeseeeenees 21 7 2 2 Numeric parameters slide change mode s sssssnssssrrssrensrrnrrrsrrrsrrrrnrerrrsrrrsrrene 21 7 2 3 Switch parameters LIST type cccccsecccsececseeeceeeeseeeeceeeeceeeesaseesaseesaseesaeeesaes 22 7 3 Menu descriptON cccceccceeeccceeecceeeeceeecceeeecueecceecsauecsueecsaeeeseessaeesseesseeessaeesseeesseeeeas 22 Poe TELT MO e E A E E 23 Toe E O eee E 25 7313 DI DANAMEUC sirrini ear E ea bie yen aaNet iira 27 Pok OOE MEU a E E en ee oe 27 7 3 5 HOLA MOU ccccccceccceecccececeeeceneeceeeceeeeeeeeseeecaeeesueesaeeseueesaeeseeessueseueeseeeseueeaeeesaess 29 ToO OEO 0 gt eee ee er ere eee ee ee ee ee 29 AES To 0 0 Renee nee eee ee eee 30 lae GUL AUIS CY sect zee etree liga hee ete ete actrees 31 Po CN Pa O aces eae 31 Tees
49. per service password must be entered Improper settings can causes of damage of the device 31 www bdsensors com CIT 250 7 4 Menu structure Measurement mode rEL2 z inPt a oe bri IE See next page Press and hold at least 2 seconds Options similar to rEL1 menu Parameter edition EI MERU CHAr Hic AddP dELP lt EdtP Hi r 4 digit user password entering if it is different from 0000 FR TER PE MB Ec aaa MENU Parameter edition i TPt AL BDISENSORS CIT 250 See previous page Parameter edition ca II Parameter edition en cr cal sP ye HYSt Cres seen n edition ae Parameter edition fon Parameter Edit edition 4 digit special password entering Default settings dEFS fese K restoring Co MENU ST sev 33 www bdsensors com CIT 250 8 The alarm LED The ALARM LED AL is turned on when input signal is out of the permissible input range See parameters tyPE Lo r and Hi r in paragraph inPt menu 9 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
50. s exceeded 2 Read of device ID code 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 F7 EO 02 DATA identification code 20F 7h 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 DATA H 0 DATA L new device address 2 The answer the same as the message ADDR FUNC REG H L DATA H L CRC L H 01 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 I Device do not reply to BROADCAST type messages CIT 250 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 DATAHS3 L3 CRC L H 01 03 06 00 OA 00 00 00 01 78 B4 DATA H1 L1 reg 01h 10 displayed value 1 0 DATA H2 L2 reg 02h 0 no errors DATA H3 L3 re
51. s 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 2 4 4 8 9 6 19 2 38 4 57 6 115 2 which respond to the baud rates of 1200 2400 4800 9600 19200 38400 5 600 and 115200 bit sec respectively 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 I The access to registers no 04h i 05h cannot be denied by mbAc parameter see LIST OF REGISTERS mbtO this parameter defines maximal time sec between following frames received by the device If the delay will be greater than the value of mbtO parameter the relays and the current output which are controlled via RS 485 interface will set to alert state see OUtP menu rEL1 menu description Parameter mbtO can be set to values from 0 to 99 seconds The value 0 means that the time will be not controlled rESP this parameter defines minimal additional delay between the Modbus message and the answer of the device received and s
52. ter in HOLd menu type of detected changes O peaks 1 drops 54h Vea 0 9999 PEA parameter in HOLd menu minimum detectable change no decimal point included 5h Yes 4 199 timE parameter in HOLA menu maximum peaks or drops display time expressed in seconds HdiS parameter in HOLd menu on ues pan 0 rEAL mode 1 HOLd mode H r1 parameter in HOLd menu 0 oan ue Cag rEAL mode 1 HOLd mode H r2 parameter in HOLd menu 0 oa ee eet rEAL mode 1 HOLd mode Parameters of CoL menu binary format 0 oOFF 1 on bit 7 C AL parameter 60h Yes seedescr bit 6 C Pr parameter bit 1 C r2 parameter bit O C r1 parameter 61h Vee 0 4 CrES parameter in CoL menu reset of colour indication 0 OFF 1 on dir parameter in CoL menu direction of value changes 62h Yes 0 1 0 morE 1 LESS 63h Yes 999 9999 SEtP parameter in CoL menu no decimal point included 64h Yes 999 999 HySt parameter in CoL menu no decimal point included 70h Yes 999 1999 The value of X coordinate of point no 1 of the user defined characteristic expressed in 0 1 71h Yes 999 9999 The value of Y coordinate of point no 1 of the user defined characteristic no decimal point included 79h 95h Furth
53. to menu 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 Due to problem with direct displaying of m and K letters they are exchanged with special signs p for m and for K respectively However in user manual letters m and K are used to make it more readable example modE tc K CIT 250 7 3 1 rEL1 menu This menu allows to configure the operation mode of relays and LEDs marked R e g R1 lf there are few relay outputs available then every output has its own configuration menu e g menu rEL2 for relay LED R2 Principle of the relays operation is described in paragraph CONTROL OF THE RELAY OUTPUTS kp e SEtP SEt2 HYSt The relay outputs and LEDs named R can be controlled depend on both the current value and the peak value when peak detection is active of the input signal If device is not equipped with one or more relay outputs menus refer to this relays are available but apply to LED indicators only In such case LEDs indicates exceeding of particular thresholds first threshold of the relay range 999 9999 Negative values can be input by selecting a
54. tton shortly after SEt is displayed After that device returns to the menu 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 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 21 www bdsensors com CIT 250 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 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 LI
55. unication interface Transmission speed Display Data memory Type of protection Housing Housing material Housing dimensions Mounting hole Assembly depth Panel thickness Operating temperature Storage temperature Screws tightening Max connection leads diameter Electrical safety EMC CIT 250 999 9999 plus decimal point 20 1 or 2 SPST relay max 250 Vac max 1 A cos 1 24 V 5 10 max 100 mA RS 485 Modbus RTU 1200 115200 bit sec 4 digit LED display red green 4 x 13 mm non volatile memory EEPROM type IP 65 front foil panel NORYL GFN2S E1 72 x 36 x 95 mm 69 x 33 mm 102 mm max 5mm 0 50 C 10 70 max torque 0 5 Nm 2 5 mmf 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 www bdsensors com CIT 250 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 characteristics 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
56. ures assuring correct operation of the unit must be applied To avoid the unit of improper indications 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 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 Fig 4 4 method of cab
57. with delay equal toFF if the input value exceeds appropriate border value defined with threshold and hysteresis at least toFF time toFF range 0 99 9 defined with 0 1 sec resolution Unit of this parameter is set by unit parameter I If time when the input signal exceeds some border value is shorter than t on or toFF time the relay do not change his state see paragraph CONTROL OF THE RELAY OUTPUTS unit unit of time for t on toFF parameters Can be set on one of two values min minutes SEC seconds AL this parameter defines the relay reaction when some critical situations occurs noCH relay do not change his state on relay will be turned on OFF relay will be turned off lf parameter modE is set to on OFF in or Out the critical situation means that allowable measurement range is exceeded lf parameter modE is set to modb the critical situation means communication delay when no data is received longer than mbtO parameter see description rS menu Is e If option noCH is selected for AL parameter behaviour of the relay may depend on FiLt parameter in some cases If FiLt is set to big value and the input signal drops result value of the measure will change slow causes of turning on or off relay due to thresholds values
58. x 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 x 57 mm Figure 4 3 Yi Gaf i amp je Woy TAE i B 2 b C a CIT 250 90 mm E 12mm 10mm lt gt e 5mm Fig 4 2 installing of brackets and dimensions of connectors www bdsensors com A CIT 250 91 mm f EE FE Fig 4 3 minimum distances when assembly of a number of units 57mm 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 2 A 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 installation fuse Wiring
59. yed for about approx 1 5 sec After that device waits for selection of point being edited by 4 v buttons The short pressing of ENTER button causes by switching between X and Y value of the displayed point The long 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 iS AddP dELP and EdtP options are available only if the user defined characteristic is used it means when parameter CHAr USEr Lo r Hi r these parameters define the expansion of nominal range in percent They 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 BDISENSORS CIT 250 Lo r 75 0 3 mA Hi r 5 0 1 mA i nominal measurement range 4 20mA rd i mA permissible measurement range a U OO oo rk x ee Sa measurement result is displayed 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
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