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1. a The answer we assume that the measure result is not out of range ADDR FUNC BYTEC 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 45 www bdsensors com CIT 300 b The answer if an error occur ADDR 01 FUNC 83 ERROR 60 41 CRC L H 18 ERROR error code 60h bottom border of the measurement range is 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 BYTEC DATA H L CRC L H 01 03 02 20 FO A1 CO DATA identification code 20FOh 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 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 0 DATA L 4 new baud rate 19200 baud I Device do not reply to BROADCAST type messages www bdsensors com CIT 300 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
2. ua Parameter i wc edition om CS Wi parameter edition Tan Parmer Lae a 4 digit special er password entering 0 Default settings restoring GJ 33 www bdsensors com CIT 300 8 The alarm LED Alarm LED AL lights in cases e exceeding of permissible measurement range e detection of sensor malfunction shortcut or break of measurement circuit 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 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 ra
3. ton gt 0 toFF gt 0 i t i i P i T P d i e relay state 4 Nu f on E toFF AA i modE oFF l 1 parameter Parameter i closed i E Fog ton 0 toFF gt 0 J i i Pod I i time dd pz toFF a on e 0 parameter parameter Description A B C D points where measured signal exceeds border values expected value x allowed deviation Bon Borr Don Dorr relays state changes moments for t on gt 0 toFF gt 0 ta tB tc tp 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 ts 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 If 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 points A and C Figure 6 6 a b c If 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
4. 0 toFF 0 L__ relay state modE in ton gt 0 toFF gt 0 EM 7 T closed it EE r4 MES time relay state modE out ton gt 0 toFF gt 0 t on parameter E Part Ei y time toFF parameter t on parameter toFF parameter points where measured signal exceeds border values expected value allowed deviation Bow Borr Con Corr Eon Eorr relays state changes moments for t on gt 0 toFF gt 0 ta ts tc tp te time periods while input signal is in zone A or zone B 19 Fig 6 7 Principle of LED relay output operation for two thresholds mode SEtP or SEt2 parameter HYSt parameter www bdsensors com CIT 300 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 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 If 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 th
5. RS 485 AY Power 24V 5 10 optional ACTIVE 1mex 100m SND DATA y Uo f DATA supply current output as iil ci on version Pi es R1 R2 optional optional 0A Mns 0 2 10V Fig 4 6 Terminals description relay outputs device with current output version RS 485 T 24V 5 10 supply optional Imax 100MA SND DATA OCA Uo iai igp v on version Mo IE n C 4 to C C2 OC3 optional optional optional 0 4 20m OC1 OC4 Umax 30V DC Imax 30mA Pmax 100mw 0 1 5V 0 2 10V oct Fig 4 7 Terminals description OC type outputs www bdsensors com CIT 300 Fig 4 10 Connection of voltage converters www bdsensors com CIT 300 Depending on version 85 230 260V AC DC or 19 24 50V DC 16 24 35V AC L N Fig 4 11 Connection of power supply and relays N 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 electromagnetic disturbances is lower and the life of relay contacts rises a Fig 4 12 Examples of s
6. mode 2 oFF mode 3 in mode 4 out mode 5 modb mode t on parameter in rEL3 menu expressed in tenth of seconds or a Tes Siasi tenth of minutes depend on unit parameter register no 45h 44h Yes 0 999 toFF parameter in rEL3 menu expressed in tenth of seconds v or tenth of minutes depend on unit parameter register no 45h 45h Yes 0 14 unit parameter in rEL3 menu 7 0 seconds 1 minutes 46h Yes 0 2 AL parameter in rEL3 menu 0 no changes 1 on 2 off 47h Yes 999 9999 SEt2 parameter in rEL3 menu no decimal point included 48h Yes 999 9999 SEtP parameter in rEL4 menu no decimal point included 49h Yes 999 999 HySt parameter in rEL4 menu no decimal point included modE parameter in ELA menu 4Ah Yes 0 3 0 hoAC mode 1 on mode 2 oFF mode 3 in mode 4 out mode 5 modb mode t on parameter in rEL4 menu expressed in tenth of seconds or TER Vos Hee tenth of minutes depend on unit parameter register no 4Dh toFF parameter in rELA4 menu expressed in tenth of seconds or in ves Marte tenth of minutes depend on unit parameter register no 4Dh ADh Yes 0 14 unit parameter in rEL4 menu B 0 seconds 1 minutes 4Eh Yes 0 2 AL parameter in rEL4 menu O no changes 1 on 2 off 4Fh Yes 999 9999 SEt2 para
7. 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 830 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 In 0 375 The segment defined by X6 30 0 and X7 40 0 for this In will be selected Accordingly to expressions given for user defined characteristic see page 37 X6 PL 30 Y6 PL 30 X7 PH 40 Y7 PH 80 and lp 0 3 the displayed value Y a J Wz I 1I X AF PH Y PL x 100 Y PL IX PH X PL 80 30 0 375 0 3 X 80 30 x 100 30 67 40 30 b lin 2 5 mA and In 0 0938 because of the normalized In 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 O For these values the displayed value W 69 C lin 20 5 mA and In 1 0313 because of the normalized In value is higher than 1 the segment defined by X10 and X11 will be selected and X10 PL 90 Y10 PL 900 X11
8. the relay will be turned off if time toFF elapse since the input signal value exceeds any of the border values see points Borr Dorr Figure 6 6 a d e www bdsensors com CIT 300 If ta te 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 rEL 1 menu 6 3 2 Two thresholds mode zone B displayed value t t t a t f us zi ad i measure gt r p Cc C e Description A B C D E i d signal RMER A L L i L M 4 G 28 41 4 2a zone B relay state modE in ton 0 toFF 0 relay state modE out h ton
9. 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 is 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 t on 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 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 3 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 i 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
10. 1 97h5 Yes 999 9999 lhe value of Y coordinate of point no 20 of the user defined characteristic no decimal point included Omod parameter in OUtP menu current output mode AOh Yes 0 2 O current output disabled 1 current output enabled with O 20mA v mode 2 current output enabled with 4 20 mA mode 3 current output controlled via RS 485 interface Ath Yes 999 9999 OUtL parameter in OUtP menu no decimal point included A2h1 Yes 999 9999 OUtH parameter in OUtP menu no decimal point included A3h1 Yes 0 499 Lo r parameter in OUtP menu expressed in 0 1 A4h1 Yes 0 99 Hi r parameter in DOUtP menu expressed in 0 1 ABh Ves 0 3 AL parameter in DUtP menu current output value on critical v exception 0 no change 1 22 1 mA 2 3 4 mA 3 0 mA 1 these registers are active only if device is equipped with active current output 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 the pairs of X Y coordinates may be defined for any free point The pair is free it means that particular point is n
11. 2 A r3 parameter bit 3 A r4 parameter 41 www bdsensors com CIT 300 Register Write Range Register description rESP parameter in rS menu additional response delay 0 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 28h Yes 0 1 AL parameter in DEEP menu 0 off 1 on 29h Yes 0 1 R1 parameter in bEEP menu O off 1 on 2Ah Yes 0 1 R2 parameter in bEEP menu 0 off 1 on 2Bh Yes O 1 R3 parameter in bEEP menu 0 off 1 on 2Ch Yes 0 1 R4 parameter in bEEP menu 0 off 1 on EN PES bane bf ache te yx Ae ee NR brightness a ie wot oo 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 9 0 hoAC mode 1 on mode 2 oFF mode 3 in mode 4 out mode 5 modb mode M 4e ho NEM M MNA oth Yes 0 999 Tt Of minutes depend on unit parameter register no 35h 35h Yes 0 4 unit parameter in rEL1 menu 0 seconds 1 minutes 36h Yes 0 2 AL parameter in
12. 4 mA 0 0 current will be set to 0 mA When the critical situation goes the current will be set to value calculated due to formulas given above 7 3 5 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 6 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 drops drop and next peak of the input signal of value equal at least DEA 352 33 Inv PEA minimal detected signal change classified as peak or drop see Figure 6 3 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 Hri Hr4 relay LED outputs R1 R4 operation mode rEAL relay LED operates depend on the current value HOLd relay LED operates depend on the peak drop value HOUt current output operation mode rEAL current output operates depend on the current value HOLd current output operates depend on the peak drop value 7 3 7 SECu menu This men
13. If parameter modE is set to on OFF in or Out the critical situation means that allowable measurement range is exceeded If 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 elf 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 The critical situation is slowly detected so it is impossible to predict the relay state in that situations www bdsensors com CIT 300 If parameter AL on the relay will be turned on in the critical situations even if his parameter modE noAC 7 3 2 DEEP menu This menu contains options connected with acoustic signal AL _ if this parameter is set to on any critical situation causes by acoustic signal T1 if this parameter is set to on activation of relay R1 causes by acoustic signal r2 if this parameter is set to on activation of relay R2 causes by acoustic signal r3 if this parameter is set to on activation of relay R3 causes by acoustic signal r4 if this parameter is set to on activation of relay R4 causes by acoustic signal gt Acustic signal turned on b
14. 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 In the device computes specific segment e g for characteristic from figure below and In 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 In for the point PL as lp in this example Ip In PL 0 5 The displayed result is calculated accordingly to the expression Wm IY PH Y PL Wz I ES NS EX PH X PL x 100 YLPL 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 In gt 1 then segment defined by points X PL 90 0 X PH 100 0 will be used www bdsensors com CIT 300 Normalized measurement In for 0 20 mA range 0 0 2 0 35 0 5 0 7 0 9 1 9 elements characteristic X PH 7
15. PH 100 Y11 PH 820 and lp 0 9 for these values the displayed value W 795 Example 7 Current output value calculation Let the current output parameters be modE on OUtL 100 OUtH 200 Lo r 5 0 Hi r 5 0 Parameters Lo r and Hi r define working range of current output to 3 8 21 mA Output current will be calculated for three displayed values D a D 17 5 According to formula from page 29 lout 17 5 10 0 20 0 10 0 x 16 mA 4 mA 0 75 16 4 16 mA 39 www bdsensors com CIT 300 Calculated lout do not exceeds the output working range 3 21 mA b D 20 5 According to formula from page 29 lout 20 5 10 0 20 0 10 0 x 16 mA 4 mA 1 05 16 4 20 08 mA Calculated lout do not exceeds the output working range 3 21 mA c D 30 0 According to formula from page 29 lout 30 0 10 0 20 0 10 0 x 16 mA 4 mA 2 16 4 36 mA 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 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 to 115200 bits second Transmission protocol MODBUS RTU compatible The device parameters and display value
16. R2 SEC 25 AL Reaction for critical situation of relay R2 oFF 25 Parameters of relay R3 operation rELS menu SEtP Relay R3 threshold 60 0 24 SEC Relay R3 second threshold 70 0 24 HYSt Hysteresis of relay R3 0 0 24 modE Operation mode of relay R3 in 24 ton Turn on delay of relay R3 0 0 25 toFF Turn off delay of relay R3 0 0 25 unit Unit of t on toFF parameters of relay R3 SE 25 AL Reaction for critical situation of relay R3 oFF 25 Parameters of relay R4 operation rEL4 menu SEtP Relay R4 threshold 80 0 24 SEt2 Relay R4 second threshold 90 0 24 HYSt Hysteresis of relay R4 0 0 24 modE Operation mode of relay R4 in 24 www bdsensors com CIT 300 Parameter Description Default value User s value 2s ton Turn on delay of relay R4 0 0 25 toFF Turn off delay of relay R4 0 0 25 unit Unit of t on toFF parameters of relay R4 SEC 25 AL Reaction for critical situation of relay R4 oFF 25 Activation of acoustic signal menu bEEP AL Activation of acoustic signal by critical situation oFF 26 r1 Activation of acoustic signal by relay R1 oFF 26 r2 Activation of acoustic signal by relay R2 oFF 26 r3 Activation of acoustic signal by relay R3 oFF 26 r4 Activation of acoustic signal by relay R4 oFF 26 Configuration of measurement input inPt menu tYPE Input type
17. 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 and the current output can be controlled depend on the current value of input signal or the peak value see HOLd menu 4 measure timE timE PEAY real measurement result time display value Fig 6 3 Process of peaks detection www bdsensors com CIT 300 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 3 lfdevice 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 ton 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 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 tur
18. defined characteristic is selected and if number of defined points is lower than 2 then warning Errc is displayed in measurement mode dELP 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 EdtP 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 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 ch
19. 0 0 X PL 50 0 Displayed value 0 4 8 12 16 20 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 96 and the higher 20 mA 20 mA x 10 96 Example 2 The normalized In result calculation Let the input mode 4 20 mA The normalized In result is calculated accordingly to the expression on page 35 so if 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 In 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 In 2 5 4 16 0 0938 and if input current is equal 20 5 mA then In 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 f www bdsensors com CIT 300 a lin 10 mA and In 0 375 Accordingly to expression on page 36 for linear characteristic 0 375 x 1200 300 562 and next the Lo C val
20. BD SENSORS pressure measurement Operating manual Process Display with Contacts and Analogue Output U I Input CIT 300 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 Strafie 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 Twv noro CIT 300 www bdsensors com CIT 300 Table of Contents 1 Basic requirements and user Safety cccccccccecccseceeeceseceeceeceseceeecaeeceeseeseueseuecseeseeeseeeaes 4 A EV ICS A Stal AMON NR 6 iM MISIasre diae T T oo oom T ascen re T dao Gonpneclob nelli ec e aevi n nonan Enan aaO aaan pia ee i 8 4 4 Maintenance sssssssssssssssseseenee nenne nenne ne nnn nni ssi siiis ssa sa sse sese se reser re sse sns ns 13 Dc ront DaNel COSCHIDUON MERO TETTE 14 OPmnele orobDeEauol aetisdotisendbedtisdebud iue tufttefebelki uto T 14 SUI pas mM 14 6 2 Detection of the peak values S oana eE E nnns 16 6 3 Control of the relay outputs esien E E EEE nnne nnne nnne nnn 17 6 9 1 One thresnold IMO assassin asina d bx ape uU Bet pat nu bla tut ttt Rut t hu Si oet it br acu br 18 6 9 2 IWO tDreshiolds ModE esce eis e S ERE ERR ER PH ERE AAT 19 Device programming E m UT D UL LLL 20 Y TP FOSgrarming Fer
21. Phone 49 0 92 35 98 11 0 Fax 49 0 92 35 98 11 11 The addresses of Distribution Partners are listed on our homepage www bdsensors com It is possible to download data sheets operating manuals ordering codes and certificates as well Our further agencies in EUROPE ASIA Belgium Denmark Germany England Iran Israel Kazakhstan Taiwan France Thailand Greece Italy Lithuania Luxembourg Netherlands Norway Poland Romania Russia oweden Switzerland Slovakia Spain Czech Republic Turkey Ukraine AUSTRALIA e Queensland 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 Technical modifications reserved CIT 300 E 040210 Telefon 49 0 92 35 98 11 0 WWW bdsensors com Telefax 49 0 92 35 98 11 11 www bdsensors com info bdsensors de
22. Pt 1 26 CHAr Conversion characteristic mode Lin 26 FiLt Filtering ratio 0 26 Pnt Decimal point position 0 0 26 LoC Minimum displayed value for nominal range 000 0 2f Hi C Maximum displayed value for nominal range 100 0 2f Lor Extension of the bottom of the nominal input range 5 0 96 28 Hir Extension of the top of the nominal input range 5 0 96 28 Active current output configuration OUtP menu Omod Current output mode 0 20 mA 29 OUIL e oo 0 mA or 4 mA depend Omod 0 0 29 OUtH Display value for 20 mA current output 100 0 29 Lor i i oo of the bottom of the nominal output 5 0 29 Hir Extension of the top of the nominal output range 5 0 96 29 AL Current output value on critical exception 22 1 mA 29 Display parameters bri Display brightness bri6 30 Configuration of peaks detection function HOLd menu modE Kind of detected changes norm 2f PEA Minimum detected change 0 0 2f timE Maximum time of peak displaying 0 0 2f HdiS The type of displayed value HOLd 2 49 www bdsensors com CIT 300 Parameter Description Default value User s value poss H r1 Source of relay R1 and LED R1 control rEAL 30 H r2 Source of relay R2 and LED R2 control rEAL 30 H r3 Source of relay R3 and LED R3 control rEAL 30 H r4 Source of relay R4 and LED R4 control rEAL 30 HOUt Source of current output control rEAL 30 Set
23. aracteristic is used it means when parameter CHAr USEr www bdsensors com CIT 300 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 75 096 3 mA Hi r 5 0 1 mA Sd nominal measurement range 4 20mA x A T NI Lf TET i ima 0 1 4 20 21 22 3 permissible measurement range NS measurement result is displayed 1 ff 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 O 10 mode then lower border of the permissible range is always O 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 96 The Lo r value can be set from 0 to 99 9 96 Parameter Hi r determines the
24. arameter 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 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 www bdsensors com CIT 300 Std answer as quick as possible no additional delay 4 Oc 20c gog answer delayed of 10 20 50 100 of 200 chars respectively 4 onc where one character time depends on selected baud rate 200c 3 In the most cases parameter rESP should be set to Std no additional delay Unfortunately for some third party RS converters
25. 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 O3h function and wrote by O6h single registers or 10h group of the registers accordingly to Modbus RTU specification Maximum group size for O3h and 10h functions cannot exceeds 16 registers for single frame Ss The device interprets the broadcast messages but then do not sends the answers www bdsensors com 11 1 List of registers CIT 300 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 a Mes 0 53 g Q 1 0 0 2 0 00 3 0 000 State of the relays and alarm LED binary format 1 on O 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 otate of current output expressed in 1 256 mA units it means that high 05h Yes Oh 1800h byte express integer part and low byte fractional par
26. are 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 two or four relay or OC type outputs Optionally CIT 300 with two relays outputs can be equipped with active current output Device CIT 300 is equipped with RS 485 Modbus RTU communication interface and sensor supply output The meter can be ordered in two power supply versions CIT 300 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 optional 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 10V Current input resistance lt 65 Q typical 55 Q Voltage input resistance gt 50 kO Accuracy 25 C 0 1 FSO tolerance band 0 50 C max 0 25 FSO www bdsensors com CIT 300 Display range Accepted prolonged input overload Outputs optional Communication interface Transmission speed Display Data memory Ingress Protection Housing type Housing material Housing dimensions Mounting hole Assembly depth Panel thickness Operating temperature Storage temperature screws tightening Max connectio
27. d 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 DL 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 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 concern
28. e 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 Hi C Loc Loc Hi C 0 i 8 12 16 20 0 8 12 16 20 Input current mA Displayed value Displayed value 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 In x Hi C Lo C Lo C where W means the displayed value Lo C c c D o 2 o EJE ss 25 as e e Loc Hi C 0 4 8 12 416 20 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 39 www bdsensors com CIT 300 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 NIn x Hi C Lo C Lo C where W means the displayed value 3 Showed above expression is not valid when normalized result is negative It is possible for 4 20 mode only In this case ln 0 the displayed result is equal Lo C see graphs below Lo C E g 2 RE 25 25 a a Lo C Hi C 0 4 8 12 16 20 0 4 8 12 16 20
29. enu This menu allows to configure the operation mode of relays and LEDs marked R e g R1 If 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 Isp e SEP SEU HYSt The relay outputs and LEDs named HR 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 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 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 O 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 3 P
30. iis uale aesti cometa eociet tio muet teu eoe aieo esi eet aoo aieo tied used 20 152 Faramelers CANION cedo iro VIN Vi SEE dO iE YE vA EUNDO ER OR oe XR E RA 21 7 2 1 Numeric parameters digit change MOE cccecc cece eeeceeeceeese cece eeseeeeeeeeeeseeeeeeees 21 7 2 2 Numeric parameters slide change MOE cccecceeeceseceeeceeeceeeceeeeeeseueseeeeeees 21 1 2 9 OWIKEN parameters LIS I WV DG wecscenicenstecrieadcectdunticnseiunticanedaahcantdumbcaneduabcmabdwatcwntdente 22 To WICNUGCSCUIDLON se cacscarescensstanaranntannsanaamaaewsaesaandanadacadagasdandasndnansanndsaadagnaaandanndasimassaanaaules 22 FOROR aca TELI TET TT T TII 23 TuS DEEP IRI RN T TIDETUR 25 1 3 9 MP E TID esee eoe pert doo e tins dct uu Fo Pen eU E Cus HE dad ee ee ea bd Vac wo tui Pa cv ERE MAE RRs 20 T2914 OUP MENU sae E a 2f es eo ates lage Oe E E T T I TI I MUT 29 920 MOLI MENU T T UU e aeea 29 eoa SECU ME mE 29 TS oM e WA RUIT UR Emm 30 d 29 95 EU parame lE Desde matti uua uw ra i NA a reete totu adl ed e Cr 31 oA AEF S DAFaIMe lel esses rent metier nnd nnn o E cest cH FCIRE Er Gnd EIE p NETS 31 TOF he SEN MGI 31 kae Men Stuc 10 eee EO UT TUTTI 32 8 The alarm LED ccc ccc ccc ceccecceeceeceeceeceeceeceeeeeeaeeeseeseseesaesaeeaeesecseeseeseeceeseeseeteeseeseessuesaes 34 9 Over culrent Or OTS COM eiaa a A oc du A Qa hod 34 TO Displayed Values calculatllODis ceieiondntetutsieisdeiettel
31. ing 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 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 www bdsensors com CIT 300 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 Make sure that the ambient temperature e g inside the control box does not exceed the recommended values In such cases forced cooling of the unit must be considered e g by using a ventilator 2 General characteristics The CIT 300 meter is equipped with one current input 0 20 4 20 mA and one voltage input 0 5 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 300 allows user to select a conversion characteristic of several kinds linear square squ
32. ing 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 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 sig
33. 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 300 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 4 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 LIST type owitch 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 men
34. iven below Wo QUIL r I QUII OUH V lomd 4mA for output range 4 II 20mA W OUIL MM X 20 m out OUtH NETT OUIL m for output range Q WE OmA where W denotes the displayed value 3 OutL parameter can be greater than OutH In this case the conversion characteristic is reversed it means that if input value raises the output current falls Lo r Hi r this parameters define the output current range maximum range O 24 mA If calculated output value lout exceeds defined range then current output generates the current equal to upper or lower border of the defined range The parameters define the percentage extension of nominal current range 4 20 mA with 0 1 9o resolution Parameter Lo r defines lower border of the range due to formula Imin 4 mA 4 mA x Lo r 96 This parameter can be set from 0 to 99 9 96 Parameter Hi r defines lower border of the range due to formula Imax 20 mA 20 mA x Hi r 96 This parameter can be set from 0 to 19 9 In example on page 40 of the DISPLAY VALUES CALCULATION paragraph the procedure of the current outputs determining is presented in details www bdsensors com CIT 300 AL this parameter determines the behaviour of current output if any critical situation occurs The parameter can be set to one of the values noCH current will not change 22 1 current will be set to 22 1 mA 3 4 current will be set to 3
35. m 12 mm 10 mm lt Fig 4 2 Installing of brackets and dimensions of connectors 67 mm Fig 4 3 Minimum distances when assembly of a number of units 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 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 www bdsensors com CIT 300 can cause fire or defective operation Over tightening can lead to damag
36. meter in rEL4 menu no decimal point included 50h Yes 0 14 modE parameter in HOLd menu type of detected changes o 0 peaks 1 drops 51h Yes 0 9999 PEA parameter in HOLd menu minimum detectable change no decimal point included 52h Yes 1 199 imE parameter in HOLA menu maximum peaks or drops display time expressed in seconds HdiS parameter in HOLd menu pom oes sse 0 EAL mode 1 HOLd mode H r1 parameter in HOLd menu 0 d we Ss rEAL mode 1 HOLd mode H r2 parameter in HOL d menu O d i Sas rEAL mode 1 HOLd mode 43 www bdsensors com CIT 300 Register Write Range Register description H r3 parameter in HOL d menu an mee Pied 0 rEAL mode 1 HOLd mode H r4 parameter in HOL d menu SR ue ae 0 rEAL mode 1 HOLd mode HOU parameter in HOLd menu SER fen aoe 0 rEAL mode 1 HOLd mode 5 g The value of X coordinate of point no 1 of the os ve paste tse user defined characteristic expressed in 0 1 74h5 Yes 999 9999 The value of Y coordinate of point no 1 of the user defined characteristic no decimal point included 5 5 HOU parameter in HOL d menu Pea 0 rEAL mode 1 HOLd mode 5 The value of X coordinate of point no 20 of the od Ree panes Wee user defined characteristic expressed in 0
37. n leads diameter Electrical safety requirements EMC 999 9999 plus decimal point 20 2 or 4 SPST relay RS 485 Modbus RTU 1200 115200 bit sec 4 digit LED display red 4 x 20 mm non volatile memory EEPROM type IP 65 front foil Panel NORYL GFN2S E1 96 x 48 x 98 mm 93 x 43 mm 102 mm max 5 mm 0 50 C 10 70 C max torque 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 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 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 www bdsensors com CIT 300 4 1 Unpacking After removi
38. nal cables is recommended Signal cable screens should be connected to the earthing only at one of the ends of the screened cable In the 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 www bdsensors com CIT 300 N All connections must be made while power supply is disconnected RS 485 optional AY Bower R4 24V 596 10 supply Imax 100MA Gub DATA E Uo ia Pepe Cha on version N C JUU ub R1 R2 R3 y optional optional optional 0 4 5V 0 2 10V 10 11 12 13 14 VF n c N Fig 4 5 Terminals description relay outputs no current output version
39. ned 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 rit measure 7 HYSt parameter Fig 6 4 One threshold control of the relay LED outputs state of relay LED SEtP or SEtZ parameter Ta m um measure HYSt parameter Fig 6 5 Two threshold control of the relay LED outputs I 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 300 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 4 t t t signal t SEtP parameter a 0 f i expected signal value B 4 a zone A B Bon EN i i JAY BY ON ae NM M RENE NENNEN EE E all A o NET AME EE i es LG ae NS ocv NI E NN Ua mg Simei marc x pA f a pona 7 HYSt parameter EB M OFF allowed signal i i d D deviation b relay state E E ids modE on i E EE ton 0 i re d toFF 0 i O A E Fog EM time C relay state i E 71 a i modE oFF eae MEM ton 0 Fog toFF 0 L d relay state i modE on
40. ng 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 93 x 43 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 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 115 x 67mm Figure 4 3 max 5 bi E f f V__ x_xxqETEEZEZ Fig 4 1 Mounting hole dimensions www bdsensors com CIT 300 89 mm 16 m
41. nge 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 I a Lo H USER 4 i 0 4 xs 46 foi 20mA range I for 0 20mA range P where linp means input current in mA and In normalized result 3 lf 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 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 www bdsensors com CIT 300 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 In x H iC Lo C Lo C where W means th
42. on 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 button If 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 Pay attention when device parameters are being changed If it is possible turn off controlled installation machine www bdsensors com CIT 300 Functions of the buttons while sub menu and parameter choice Selection of sub menu or parameter for editing Name of selected item sub AN NY menu or parameter is displayed 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 3 After about 1 min since last use of the bu
43. ons Lo C These parameters describe the values displayed for minimum and maximum input HI C 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 Current output can be controlled depend on both present measured value and peak value if peak detection is enabled 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 X value The Y value can be changed in range 999 9999 decimal point position depend on Pnt parameter menu inPt 3 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 f user
44. ot 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 www bdsensors com CIT 300 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 01h illegal function only functions O3h O6h and 10h are available 02h illegal register address O3h 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 O3h 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 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 300 device address 01h ADDR FUNC REG H L COUNT H L CRC L H 01 03 00 01 00 01 D5 CA
45. 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 0 3 0 hoAC mode 1 on mode 2 oFF mode 3 in mode 4 out mode 5 modb mode t on parameter in rEL2 menu expressed in tenth of seconds or PER Ies LU tenth of minutes depend on unit parameter register no 3Dh P toFF parameter in rEL2 menu expressed in tenth of seconds or oun x le tenth of minutes depend on unit parameter register no 3Dh 3Dh Yes 0 1 unit parameter in rEL2 menu LS 0 seconds 1 minutes 3Eh Yes 0 2 AL parameter in rEL2 menu 0 no changes 1 on 2 off www bdsensors com CIT 300 Register Write Range Register description 3Fh Yes 999 9999 SEt2 parameter in rEL2 menu no decimal point included 40h Yes 999 9999 SEtP parameter in rEL3 menu no decimal point included 41h Yes 999 999 HySt parameter in rEL3 menu no decimal point included modE parameter in rEL3 menu 42h Yes 0 3 0 hoAC mode 1 on
46. rESP should be adjusted experimentally Table 7 1 contains most frequently used values bAud parameter 38 4 57 0 115 2 rESP parameter t 1 Oc t 20c t 5 0c Fig 7 1 Settings of rESP parameter 7 3 9 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 10 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 11 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 31 www bdsensors com CIT 300 7 4 Menu structure Measurement mode Parameter edition Options similar to rEL1 menu _ Options similar to rEL1 menu m Options similar to rEL1 menu I Parameter MB esc edition ll esc i za mo we ag Um 4 i bz MES AddP lI 7 a E bn Parameter Em uc editi C See next page www bdsensors com CIT 300 See previous page
47. rement range i i Fig 6 2 Definitions of measurements ranges in mode 0 20 mA Is Ifthe 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 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 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 is Configuration of the device via menu or RS 485 interface do not stops measures 19 www bdsensors com CIT 300 6 2 Detection of the peak values The CIT 300 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
48. resented 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 than 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 300 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
49. resholds 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 3 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 T 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 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 S5ECu menu user can change the value of particular threshold pressing button ENTER see PARAMETERS EDITION 3 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 butt
50. sdebv nied niei Smet bete duties dubites debut dades sa 34 10 1 Additional calculations used conversion characteristic ussssssse 34 TO TT Cihear characteris tiG acccssepeeocivivisceties nne atv df daa ca Rd a aa Rl va Ra M A CR RR 35 10 1 2 Square characterisllG su es covsneccesvewsvendianisunescateryiaradnravewaterniaardarriaandubarenaiexniaridanetans 35 1013 odguare TOOL Chnardeterislle cairan R Rex Oe rct he ian qnc andes anarc son nnd bns 36 10 1 4 User defined characterislle Eae eo EH Ebo ERE SERE TE DEC np PEDIR SEED EDEN FED SEE Rb PES FU Is 36 10 2 Examples or calculallOriS ssi siis kdantdas ede F aida etie REO EnE MAR tes P FREE AER EA SHIP Te IPIRR ERR SER ERE Ud 3 TT The MOADUS protocol NANGIINGwsis ccevordiceovexssdiosardvedensedvedorsvarabouocsveteuscbustouwavelouqauauebaidiaeenes 40 UEM EIdedi e il de t PS 41 11 2 Transmission errors descrip enia te tetas a tm tr non tte eai 45 11 3 Examples of query answer frames cccceeecceeceeceeeteeeeeeeneceeeaueteeeeeesenseeeueeeeseeenaes 45 12 IDerault atiduser s setings MIST sese cie eui ten iate ut ee ue eer ct eor tier elena e er 48 SM Be e H MMTT 50 T4 WV arany Mee elio DU UU UU TE 50 3 www bdsensors com CIT 300 Explanation of symbols used in the manual This symbol denotes especially important guidelines concerning the installation and operation of the device Not complying with the guidelines denote
51. t of desired output current O6h No 999 6000 Peak drop value no decimal point tyPE parameter in InPt menu nominal input range O 0 20 mA 10h Yes 0 iuc 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 l j 0 linear 1 square 2 square root 3 user defined 12h Yes 0 5 FiLt parameter in InPt menu measurement filtering rate 13h Yes 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 96 17h Yes 0 199 Hi r parameter in InPt menu in 0 1 20h Yes 0 199 Device address 21h No 20BOh Device identification code ID bAud parameter in rS menu baud rate 22h Yes uus f O 1200 baud 1 2400 baud 2 4800 baud 3 9600 baud 4 19200 baud 5 38400 baud 6 57600 baud 7 115200 baud 23h Vas 0 4 mbAc parameter in rS menu permission to write registers via B RS 485 interface O write denied 1 write allowed Parameters of SECU menu binary format 0 oF F 1 on 24h Yes see descr bit O A r1 parameter bit 1 A r2 parameter bit
52. the count of being read registers max 16 The answer ADDR FUNC BYTE C DATA H1 L1 DATA H2 L2 DATA H3 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 reg O3h 1 decimal point position 0 0 There is no full implementation of the Modbus Protocol in the device The functions presented above are available only a www bdsensors com CIT 300 12 Default and user s settings list Parameter Description Default value User s value piam Parameters of relay R1 operation rEL1 menu SEtP Relay R1 threshold 20 0 24 SEC Relay R1 second threshold 30 0 24 HYSt Hysteresis of relay R1 0 0 24 modE Operation mode of relay R1 in 24 t on Turn on delay of relay R1 0 0 25 toFF Turn off delay of relay R1 0 0 25 unit Unit of t on toFF parameters of relay R1 SEC 25 AL Reaction for critical situation of relay R1 oFF 25 Parameters of relay R2 operation rEL2 menu SEtP Relay R2 threshold 40 0 24 SEt2 Relay R2 second threshold 50 0 24 HYSt Hysteresis of relay R2 0 0 24 modE Operation mode of relay R2 in 24 ton Turn on delay of relay R2 0 0 25 toFF Turn off delay of relay R2 0 0 25 unit Unit of t on toFF parameters of relay
53. the parameter e enter to the sub menu e confirmation of changes made in parameter being edited 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 ENTER Symbol used in the manual ENTER 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 www bdsensors com CIT 300 Lo r parameter Hi r parameter 7 nominal measurement range 4 Peg t eg By 4mA 20 mA permissible measurement range li e M mM e t e M j 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 Lor i Hi r parameters paragraph inPt menu Hi r parameter nominal measurement range a X 0 mA 20mA permissible measu
54. tings of access to the configuration parameters SECu menu Art Permission to changes of relay R1 threshold on 31 without of the user password knowledge A 2 Permission to changes of relay R2 threshold Bn 31 without of the user password knowledge Ar3 Permission to changes of relay R3 threshold Bn 31 without of the user password knowledge Ard Permission to changes of relay R4 threshold an 31 without of the user password knowledge RS 485 interface configuration menu rS Addr Device address 0 31 bAud Baud rate 9 6 31 mbAc Permission to changes of configuration registers on 31 mbtO Maximum delay between received messages 0 31 rESP Additional delay of answer transmission Std 31 Configuration of numerical parameters edition Edit Numerical parameters edit mode dig 32 13 Disposal The device must be disposed according to the European Directives 2002 96 EC and 2003 108 EC on waste electrical and electronic equipment Electrical 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 www bdsensors com 51 CIT 300 www bdsensors com CIT 300 BD SENSORS GmbH BD Sensors Str 1 95199 Thierstein Germany
55. ttons device exits the menu mode and returns to the measurement mode only if no parameters are in editing mode 71 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 button 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 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
56. u Functions of buttons when editing numeric and switching parameters V If numerical parameter is being edited a short press of ENTER button ENTER 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 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 Pressing this button operator can cancel the changes done up to now if they MENU were not approved by ENTER button after the SEt ask and come back 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 I Due to problem with direct displaying of m letter it is exchanged with special sign m Independently in user manual letter m is used to make it more readable example modE www bdsensors com CIT 300 7 3 1 rEL1 m
57. u contains presets connected with availability of other parameters 29 www bdsensors com CIT 300 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 3 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 Ar1 Ar4 this option permits user on or prohibits OFF to modify the thresholds of the relays LEDs R1 R4 without knowledge about user password 7 3 8 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 2 4 4 8 9 6 19 2 38 4 7 757 6 115 2 which respond to the baud rates of 1200 2400 4800 9600 19200 38400 57600 and 115200 bit s respectively mbAc this p
58. ue is added to the result so the displayed value W 562 300 262 b lin 2 5 mA and In 0 0938 W 441 C lin 20 5 mA and In 1 0313 W 1247 R 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 In 0 375 Accordingly to expression on page 36 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 In 0 0938 W 287 C lin 20 5 mA and In 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 210 mA and In 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 In 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 In 1 0313 W 1223 www bdsensors com CIT 300 Example 6 The user defined characteristic Let the input mode
59. 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 96 The value of Hi r can be set from 0 to 19 9 96 In example no 1 of the DISPLAY VALUES CALCULATION paragraph the procedure of the permissible input range determining is presented in details 3 Ifthe 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 4 DutP menu This menu contains parameters of current output control Menu is available if the device is equipped witch current output 3 Current output can be controlled depend on both present measured value and peak value if peak detection is enabled 2f www bdsensors com CIT 300 Omod current output mode can be set to values OFF current output disabled 0 20 current output enabled with O 20 mA mode 4 20 current output enabled with 4 20 mA mode modb current output controlled via RS 485 interface OUtL this parameter determines the input value for which the output current is minimal 0 mA or 4 mA depend of current output mode Omod OUtH this parameter determines the input value for which the output current is equal 20mA The output current value is calculated due to formulas g
60. uppression circuit connection to relay terminals b to the inductive load www bdsensors com CIT 300 voltage input 24 V Fig 4 13 Example of OC type outputs conection optional ACTIVE current output Logic controller current input 4 20 mA Fig 4 14 Example of current outputs connection for device with current output only 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 N Using any other agents can cause permanent damage to the housing 13 www bdsensors com CIT 300 5 Front panel description alarm LED indicator AL display AL R1 9 R2 R3 Thresholds exceeding VA e LED indicators R 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 previous menu or measure mode e cancel the changes made in parameter being edited Functions e Start to edit
61. y e g relay can be turned off by pressing of any button 7 3 3 IinPt menu This menu presents the measurement input tYPE type of the input sensor This parameter can be set to values 0 20 4 20 current inputs O 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 CHAr this option presents type of the conversion characteristic and can be set to kyl linear When one of those characteristics is chosen eee display range is defined by Lo C and Hi C Sgqrt 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 3 If 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 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 amp amp 0 74 0 0 lh 0 00 0 000 25 www bdsensors com CIT 300 Decimal point position is changed by 4 v butt

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