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User Manual - Metrix Electronics Ltd

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1. Press and hold at least 2 seconds o0 S 4 digit user password entering if it is different from 0000 AB a a rEL1 lt SEtP gt Parameter i c 4 i EAE edition SS rEL2 Le Options similar Wess ei to rEL1 menu T wie Options similar HYSt II to rEL1 menu 4 5 modE I Options similar 4 to rEL1 menu I ton e amp t gt AL I Parameter la toFF u 7 DE edition E ME 1 like unit I m 1 La r2 II L AL n t r3 I DH Y r4 I L Bi inPt gt DPE 2 Parameter R 7 ES edition oi CHAr D lee CH FiLt I I D a _V SS e I Pnt Iu Le OutP gt Omod Parameter D o ry n B edition LJ Loc u iS I OUtL Iu 4 H i HiC I OUtH u D MEME D bei thi ll EH Lor ll i t i th2 ln Y ki Hir u DH Sw ue rg 0 Hm i ZE Li AL STE D l ki td u option t ee ee ri tSn Iu t e tSh Iun D I AddP len dELP H lt EdtP I t bei Lor I H See next page sp Hir dE 39 User manual METER SRP 946 See previous page 4 4 go rd 2 4 HOLd gt mode KO Parameter D ni 5 edition n r o EG j PEA I timE I j Hdis H
2. Register Write Range Register description CHAT parameter in InPt menu characteristic type 11h Yes 0 5 0 linear 1 square 2 square root 3 user defined 4 volume characteristics of a cylindrical tank in the vertical position 5 volume characteristics of a cylindrical tank in the horizontal position 12h Yes 0 5 FiLt parameter in InPt menu measurement filtering rate 13h Yes 0 3 Pnt parameter in InPt menu the copy of 04h register decimal j point position 0 0 1 0 0 2 0 00 3 0 000 14h Yes Sse descr Lo C parameter in InPt menu no decimal point included higher word 45h Yes EE Lo C parameter in InPt menu no decimal point included lower word 16h Yes sed descr Hi C parameter in InPt menu no decimal point included higher word 17h Vos e dos t Hi C parameter in InPt menu no decimal point included lower word 18h Yes see descr Lo r parameter in InPt menu in 0 001 higher word 19h Yes see descr Lo r parameter in InPt menu in 0 001 lower word 1Ah Yes see descr Hi r parameter in InPt menu in 0 001 higher word 1Bh Yes see descr Hi r parameter in InPt menu in 0 001 lower word 20h Yes 0 199 Device address 21h No 20F6h Device identification code ID bAud parameter in rS menu baud rate 22h Yes 0 7 0 1200 baud 1
3. m Hm II wzm bei Hr E Hr3 In i bi Hr4 I E HOUt II ESC v 2 ei SECu 4 z gt Scod LE oe D 7 ee edition lt Am II H Gg Ar I sa gt _ Parameter t rs k x Addr edition eerie Aran zez 4 H 25 i bAud I l Ard jt D Sie mbac I mbtO l Parameter i Edit 4 edition i F G lt rESP ji 4 digit special password entering s v dEFS 0 5 SEt RB Detault settings a restoring x ES e ec SErv 40 User manual METER SRP 946 8 THE ALARM LED The ALARM LED F 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 against damage Maximum input current is set to 40mA typical When temperature of the standard resistor falls the protection circuit will turn on 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 until to the standard resistor temperature will falls to t
4. tn h the parameters Lo C and Hi C are not available yt h1 t h2 t h3 t d the parameters defining shape of cylindrical tank Figure 7 1 and Figure 7 2 a for the cylindrical tank in the vertical position yt h1 the height of the bottom part of a tank in the elliptic paraboloid shape this parameter has the fixed precision 2 decimal point yt h2 the height of the middle part of a tank in the cylindrical shape this parameter has the fixed precision 2 decimal point t h3 the height of the top part of a tank in the elliptic paraboloid shape this parameter has the fixed precision 2 decimal point t d the diameter of the middle part of a tank this parameter has the fixed precision 2 decimal point b for the cylindrical tank in the horizontal position t h1 the length of the left bottom of a tank in the elliptic paraboloid shape this parameter has the fixed precision 2 decimal point t h2 the length of the middle part of a tank in the cylindrical shape this parameter has the fixed precision 2 decimal point t h3 the length of the right bottom of a tank in the elliptic paraboloid shape this parameter has the fixed precision 2 decimal point 30 User manual METER SRP 946 t d the diameter of the middle part of a tank this parameter has the fixed precision 2 decimal point t Sn t Sh parameters
5. cose I o toFF 0 L L ZEN relay state 4 A i d modE in E bord Lordi d ka mi ton gt 0 14 Dd E toFF 0 L D I DA SSE I r LA 1 e relay state4 ton parameter toFF parameter ton parameter modE out E i i closed bag E tonc p d i WW I close o toFF gt 0 i Ze time toFF parameter t on parameter toFF parameter Obja nienie 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 tg te to te time periods while input signal is in zone A or zone B Figure 6 7 Principle of LED relay output operation for two thresholds mode 23 User manual METER SRP 946 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 ton 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 define
6. current output enabled with 4 20 mA mode modb current output controlled via RS 485 interface For active voltage output oFF voltage output disabled 0 5 voltage output enabled with 0 5V mode 1 5 voltage output enabled with 1 5V mode 0 10 voltage output enabled with 0 10V mode 2 10 voltage output enabled with 2 10 V mode modb voltage output controlled via RS 485 interface OUtL this parameter determines the input value for which the output signal is minimal depend of output mode Omod OUtH this parameter determines the input value for which the output signal is maximal depend of output mode Omod The analogue output value is calculated due to formula given below E OUtH OUiL where W displayed value Out analogue output value B higher range limit 20mA 5V 10V A lower range limit OmA 4mA OV 1V 2v OutL parameter can be greater than OutH In this case the conversion characteristic is reversed it means that if input value raises the output value falls Lor Hr this parameters define the output value range If calculated output value Out exceeds defined range then analogue output generates signal equal to upper or lower border of the defined range These parameters defines the percentage extension of nominal analogue range with 0 001 resolution Parameter Lo r defines lower border of the range due to formula
7. parameter in HOLd menu PIN 5x68 i 0 rEAL mode 1 HOLd mode p The value of X coordinate of point no 1 of the user defined Ah Yes SE characteristic expressed in 0 196 higher word 78h5 Yes see descr The value of X coordinate of point no 1 of the user defined characteristic expressed in 0 196 lower word 79h5 Yes ac descr The value of Di coordinate of point no 1 of the user defined characteristic no decimal point included higher word ZAh5 Yes D descr The value of sy coordinate of point no 1 of the user defined characteristic no decimal point included lower word 7Bh5 C2h5 Further pairs of X Y coordinates of points no 2 19 of the user defined characteristic C3h5 Yes Sea descr The value of X coordinate of point no 20 of the user defined characteristic expressed in 0 1 higher word C4h5 Yes sae da ct The value of X coordinate of point no 20 of the user defined characteristic expressed in 0 1 lower word C5h5 Vos s e descr The value of Y coordinate of point no 20 of the user defined characteristic no decimal point included higher word C6h5 Yes see descr The value of AN coordinate of point no 20 of the user defined characteristic no decimal point included lower word Omod parameter in OUtP menu active current output mode Yes 023 0 current output disabled 1 current output enabled with 4 20mA mode 2 current output enabled with 0 20mA mode 3
8. Sak 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 rg if this parameter is set to on activation of relay R4 causes by acoustic signal Acoustic signal turned on by e g relay can be turned off by pressing of any button 7 3 3 inPt menu This menu presets the measurement input tYPE 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 CHAr this option presets type of the conversion characteristic and can be set to Lin linear Sqr ue When one of those characteristics is chosen display Sqrt square root range is defined by Lo C and Hi C 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 tn v volume characteristics of a cylindrical tank in the vertical position determined by parameters t h1 t h2 t h3 t d t Sn t Sh in InPt menu see belo
9. current output controlled via RS 485 interface Omod parameter in OUtP menu passive current output mode DOh Yes 0 2 0 current output disabled 1 current output enabled with 4 20mA mode 2 current output controlled via RS 485 interface Omod parameter in OUtP menu active voltege output mode 0 voltage output disabled 1 voltage output enabled with 0 5V Yes 0 5 mode 2 voltage output enabled with 1 5V mode 3 voltage output enabled with 0 10V mode 4 voltage output enabled with 2 10V mode 5 voltage output controlled via RS 485 interface 55 User manual METER SRP 946 Register Write Range Register description D1h Yes See desir OUtL parameter in OUtP menu no decimal point included higher word D2h Yes Sex descr OUtL parameter in OUtP menu no decimal point included lower word D3h Yes see descr OUtH parameter in OUtP menu no decimal point included higher word 1 parameter in menu no decimal point included D4h Yes ses desc OUtH ter in OUtP decimal point included lower word Lo r parameter in OUtP menu for active current output and Dehi Yes See deger active voltage output expressed in 0 001 higher word Lo r parameter in OUtP menu for passive current output EES SSES expressed in 0 00196 higher word Lo r parameter in OUtP menu for active current o
10. 2400 baud 2 4800 baud 3 9600 baud 4 19200 baud 5 38400 baud 6 57600 baud 7 115200 baud 23h Vas 01 mbAc parameter in rS menu permission to write registers via i RS 485 interface 0 write denied 1 write allowed Parameters of SECU menu binary format 0 oF F 1 on 24h Yes see descr bit 0 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 25h Yes 0 5 0 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 0 no delay checking 1 99 maximum delay expressed in seconds 28h Yes sae descr t h1 parameter in InPt menu no decimal point included higher word 29h Yes Seo descr t h1 parameter in InPt menu no decimal point included lower word 2Ah Yes See descr t h2 parameter in InPt menu no decimal point included higher word 51 User manual METER SRP 946 Register Write Range Register description 2Bh Yes See desir t h2 parameter in InPt menu no decimal point included lower word 2Ch Yes Ses descr t h3 parameter in InPt menu no decimal point included higher word 2Dh Ye
11. C and inverted Lo C gt Hi C characteristic 42 User manual METER SRP 946 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 WI x Hi C Lo C Lo C where W means the displayed value possible for 4 20 mode only In this case 1 lt 0 the displayed result is equal Lo C a Showed above expression is not valid when normalized result is negative It is see graphs below Hi C LoC Displayed value Displayed value LoC HiC 0 4 8 12 16 20 0 4 8 12 16 20 Input current mA Input current mA Figure 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 and PH point high in this example PL 50 0 and PH 70 0 and the normalized result I for the point PL as I in this example I I PL 0 5 The displayed result is calcul
12. THE DEVICE IS NOT USED ACCORDING TO THE MANUAL THE USER IS RESPONSIBLE FOR POSSIBLE DAMAGES This symbol denotes especially important characteristics of the unit Read any information regarding this symbol carefully 1 BASIC REQUIREMENTS AND USER SAFETY AY The manufacturer is not responsible for any damages caused by inappropriate installation not maintaining the proper environmental conditions and using the unit contrary to its assignment 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 If the device is equipped with PE connector it should be connected to PE wire Otherwise PE wire should be connected to GND connector 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 unit malfunction 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 connected equip
13. V When the critical situation goes the output signal 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 PEA EH DI inv drops drop and next peak of the input signal of value equal at least PEA 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 0 to 19 9 sec with 0 1 sec resolution If HdiS HOLD then setting parameter timE 0 0 causes holding peak value until ESC button is pressed If HdiS rEAL then value timE 0 0 means no holding 36 User manual METER SRP 946 HdiS type of displayed values rEAL current value is displayed HOLd peak drop value is displayed H r1 H r4 relay LED outputs R1 R4 operation mode HOUt rEAL relay LED operates depend on the current value HOLd relay LED operates depend on the peak drop value
14. and Lo byte BYTE C 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 SRP 946 device address 01h ADDR FUNC REG HL COUNT HL CRC LH 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 LH 01 03 02 00 FF F8 04 DATA H L displayed value 255 no decimal point Decimal point position can be read from reg 04h 57 User manual METER SRP 946 b The answer if an error occur ADDR FUNC ERROR CRC L H 01 83 60 41 18 ERROR error code 60h bottom border of the measurement range is exceeded 2 Read of device ID code ADDR FUNC REGH 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 F6 21 C2 DATA identification code 20F6h 3 Change of the device address from 1 to 2 write to reg 20h ADDR FUNC REG H L DATA H L CRC LH 01 06 00 20 00 02 09 C1 DATAH 0 DATA L new device address 2 The answer the same as the message ADDR FUNC REG HL DATA H L CRC LH 01 06 00 20 00 02 09 C1 4 Change of baud rate of all devices connected to the
15. 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 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 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 A r1 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 bAud mbAc 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 this parameter determines RS 485 interface baud rate It can be set to one of 8 possi
16. defining the length and position of the sensor used to measure level of liquids gases or solids in the tank Figure 7 1 7 2 t Sn distance between end of the sensor and bottom of the tank this parameter has the fixed precision 2 decimal point but the unit is 100 times smaller than t Sh see Info below yt Sh the measuring range this parameter has the fixed precision 2 decimal point The unit value of t Sn parameter is 100 fold less than the unit value of other parameters defining cylindrical tank i e if we set value 10 00 in t Sh parameter and set value 08 00 in t Sn parameter this mean that value of t Sn parameter is real has 00 08 value in preserved unit of the t Sh parameter If we set parameters of tank in m unit t Sn parameter takes cm unit respectively see above than displays the result the volume of the tank in m unit if we set parameters of tank in cm unit t Sn parameter takes mm unit respectively see above than displays the result the volume of the tank in cm unit t Sh parameter may be greater than height for vertical position or diameter for horizontal position of the tank which means that the total volume of the tank can be achieved by eg such middle current range If the measurement value does not exceed permissible measurement range but displayed value exceeds range of 999999 than you can move to the right position of the decimal point if it is s
17. descr HySt parameter in rEL1 menu no decimal point included lower word modE parameter in rEL1 menu 40h Yes 0 5 0 noAC mode 1 on mode 2 oFF mode 3 in mode 4 out mode 5 modb mode B t on parameter in rEL1 menu expressed in tenth of seconds or SA ves 01993 tenth of minutes depend on unit parameter register no 43h 52 User manual METER SRP 946 Register Write Range Register description R toFF parameter in rEL1 menu expressed in tenth of seconds aah inn 27 or tenth of minutes depend on unit parameter register no 43h 43h Yes 01 unit parameter in rEL1 menu 0 seconds 1 minutes 44h Yes 0 2 AL parameter in rEL1 menu 0 no changes 1 on 2 off 45h Yes See descr SEt2 parameter in rEL1 menu no decimal point included higher word 46h Yes see descr SEt2 parameter in rEL1 menu no decimal point included lower word 47h Yes ce dos t SEtP parameter in rEL2 menu no decimal point included higher word 48h Yes seg descr SEtP parameter in rEL2 menu no decimal point included lower word 49h Yes sae descr HySt parameter in rEL2 menu no decimal point included higher word 4Ah Yes see descr HySt parameter in rEL2 menu no decimal point included lower word modE parameter in rEL2 m
18. its state see paragraph CONTROL OF THE RELAY OUTPUTS unit of time for t on and toFF parameters Can be set on one of two values min minutes SEC seconds 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 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 User manual METER SRP 946 If option noCH is selected for AL parameter behaviour of the relay may aD 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 f parameter AL on the relay will be turned on in the critical situations even if his parameter modE noAC 7 3 2 bEEP menu This menu contains options connected with acoustic signal AL if this parameter is set to on any critical situation causes by acoustic signal
19. net BROADCAST message ADDR FUNC REGH L COUNT H L CRC LH 00 06 00 22 00 04 29 D2 DATA H 0 DATA L 4 new baud rate 19200 baud a Device do not reply to BROADCAST type messages 58 User manual METER SRP 946 5 Read of the registers 1 2 and 3 in one message example of reading a number of registries in one frame ADDR FUNC REGH L COUNT HL CRC L H 01 03 00 01 00 03 54 OB COUNTL the count of being read registers max 16 The answer ADDR FUNC BYTEC DATA H1 L1 DATA H2 L2 DATA H3 L3 CRC LH 01 03 06 00 0A 00 00 00 01 78 B4 DATAH1 L1 reg 01h 10 displayed value 1 0 DATAH2 L2 reg 02h O no errors DATA H3 L3 reg 03h 1 decimal point position 0 0 a There is no full implementation of the Modbus Protocol in the device The functions presented above are available only 12 DEFAULT AND USER S SETTINGS LIST Parameter Description Default value User s value peus Parameters of relay R1 operation rEL1 menu SEtP Relay R1 threshold 20 000 27 SEt2 Relay R1 second threshold 40 000 27 HYSt Hysteresis of relay R1 0 000 27 modE Operation mode of relay R1 on 27 ton Turn on delay of relay R1 0 0 28 toFF Turn off delay of relay R1 0 0 28 unit Unit of t on toFF parameters of relay R1 SEC 28 AL Reaction for cr
20. prolonged input overload 0720 mA 4 20 mA overload protected maximum input current about 40 mA 0 1 25 C one digit for 0 20 mA range 65 Q typical 55 Q 20 Voltage input Voltage measurement accuracy Voltage input resistance Accepted prolonged input overload 0 5 V 1 5 V 0 10 V 2 10 V 0 1 25 C one digit for 0 10 V range gt 50 kO 20 Sensor power supply output 24V 5 10 max 100 mA stabilized Relay output 0 2 or 4 NO 1A 250V AC cos 1 OC type output 0 2 or 4 30mA 30VDC 100mW Active current output optional for two relays or two OC type output version only Load resistance max range max 0 24 mA 700 Q Passive isolated current output optional for two relays or two OC type output version only Supply voltage Load resistance max range max 2 8 24 mA Us 9 5 36V Us 9 5V 24mA kQ User manual METER SRP 946 Active voltage output optional for two relays or two OC type output version only Load resistance min range max 0 11V 2000 Q Temperature stability Display range Communication interface Baud rate Display depending on version Data memory Front panel protection Terminals protection Housing type Housing material Housing dimensions Mounting hole Assembly depth Panel thickness Operating temperature depending on version Storage temperature depend
21. 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 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 User manual METER SRP 946 11 2 TRANSMISSION ERRORS DESCRIPTION If 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 03h 06h and 10h are available 02h illegal register address 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 Device address on modbus network FUNC Function code REGH L Starting address address of first register to read write Hi and Lo byte COUNTH L No of registers to read write Hi
22. 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 If tA tB tC or tD 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 22 User manual METER SRP 946 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 oft 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 A zone B E CRDI Y a zeA l SEtP or SEt2 parameter l CN EEE p Y HYSt parameter mei j i ieee L poe ee E ES 4 bg I a Nap I bag Ge MI i b relay state d bg Pa i d time modE in ELI RW i ton 0 d i Wu 1 ES I toFF 0 HER m E c relay state 4 E MESE RENE i E modE out rg MEE i d datz b Lom ton 0 E bg U
23. 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 19 User manual METER SRP 946 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 Configuration of the device via menu or RS 485 interface does not stop measures 6 2 DETECTION OF THE PEAK VALUES The SRP 946 controller is equipped with peaks detection function It can detect a peaks of the input signal and display their values Presets connected with this function are placed in HOLd menu see description of HOLd menu The detection of the peak can be done if the measured signal raises and drops of value at least equal to parameter PEA Detected peaks are displayed during the time defined by parameter timE If a new peak will be detected while one is displayed this new peak will be displayed and display time counter will be cleared Figure 6 3 If no peaks are detected while time timE elapses device starts to show the current value of input signal again If HdiS HOLD
24. to exit present menu level and goes to upper MENU level menu or measurement mode a 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 button shortly after SEt is displayed After that device returns to the menu 7 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
25. 0 5 4 16 1 0313 45 User manual METER SRP 946 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 three different input currents from example 2 a lin 210 mA and I 7 0 375 Accordingly to expression on page 42 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 h 0 0938 W 441 c lin 20 5 mA and h 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 ln 210 mA and 0 375 Accordingly to expression on page 42 for square characteristic 0 375 x 1200 300 211 and next the Lo C value is added to the result so the displayed value W x 211 300 89 b lin 2 5 mA and I 0 0938 W 287 C ln 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 h 0 375 Accordingly to expression on page 43 for square root characteristic V0 3
26. 75 x 1200 300 919 and next the Lo C value is added to the result so the displayed value W 919 300 619 b ln 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 In 1 0313 W z 1223 46 User manual METER SRP 946 Example 6 The user defined characteristic Let the input mode 4 20 mA and the user selected the 10 segment characteristic To do this itis 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 210 mA and 0 375 The segment defined by X6 30 0 and X7 40 0 for this I will be selected Accordingly to expressions given for user defined characteristic see page 43 X6 PL 30 Y6 PL 30 X7 PH 40 Y7 PH 80 and l 0 3 the displayed value W I 1 X TPR x PL 1001 Y PL s 80 30 ma 0 375 0 3 X 40 39 100 30 67 b lin 2 5 mA
27. Assisting the automation rz simex industry since 1986 User manual METER SRP 946 Firmware v 6 00 or higher Input type 0 4 20 mA 0 1 5V 0 2 10V e 6x13 mm display CE Read the user s manual carefully before starting to use the unit or software Producer reserves the right to implement changes without prior notice 2014 11 06 SRP 946 INSSXEN v 1 00 001 User manual METER SRP 946 CONTENTS 41 o EE 4 2 ASSEMBLY EE 4 3 CONNECTION METHOD irani a a i ede vat eae LEM io FEL ar pac ehe FOR e Tu aside a UR ceeded 4 4 MAINTENANCE 5 FRONT PANEL DESCRIPTION 6 PRINCIPLE OF OPERATION is 6 1 MEASUREMENT MODE 5 1 pi tatis tiep ZKE AE A eA Ma ro XX pe ade HARE Te HERE RA ARV ek 6 2 DETECTION OF THE PEAK VALUES isse tenere SEENEN 20 6 3 CONTROL OF THE RELAY OUTPUTS 21 6 3 1 One threshold mode 22 6 3 2 Two thresholds mode 23 7 DEVICE PROGRAMMING 24 7 1 PROGRAMMING MENU 24 7 2 PARAMETERS EDITION sse 25 7 2 1 Numeric parameters digit change mode 25 7 2 2 Numeric parameters slide change mode 25 7 2 3 Switch parameters LIST type 20 7 3 MENU DESCRIPTION zz p z oz ai Ea Ady WY PR A RT A SEDAN 26 27 29 29 34 36 36 37 37 38 4 5 4 DEVICE INSTALLATION RR 7 z T7 9 Pad TEED en 7 3 2 bEEP menu 7 3 3 inPt menu 29 JE OUP
28. C type outputs 11 User manual METER SRP 946 Power smd 24V 5 10 RS 485 supply Dese Imax 100mA GND DATA depending on version Uo Ce Be Gere DATA n c n c n c T n c GND 0 4 20mA R1 R2 optional optional 0 1 5V 0 2 10V Figure 4 8 Terminals description relay and active current outputs Power ACTIVE 24V 4595 10 RS 485 supply Stesel Imax 100mA GND DATA depending on version R p z DATA Cl BIS Gere N C DC n c n c OC1 OC2 Tap GND opcja opcja 0 4 20mA OC1 OC2 Umax 30V DC Imax 30mA Pmax 100mW 0 1 5V 0 2 10V Figure 4 9 Terminals description OC type and active current outputs Passive isolated Power Current output 24V 5 10 RS 485 4 20mA supply optional Imax 100mA GND DATA depending on version Uo DATA 44 Ce ET Gere n c n c n c n c GND 0 4 20mA R1 R2 optional optional 0 1 5V 0 2 10V Figure 4 10 Terminals description relay and passive current outputs 12 User manual METER SRP 946 Passive isolated Power Current output 24V 5 10 RS 485 supply Steen Imax 100mA GND DATA depending on version j Uo DATA DW 112 Pis Bere FF h c n c n c n c OC1 OC Zen optional optional H mh 0 4 20mA OC1 OC2 Umax 30V DC Imax 30mA Pmax 100mW 0 1 5V 0 2 10V Figure 4 11 Termina
29. OI A Too Oi parametlar EE 36 7 3 6 HOLd menu 7 3 7 SECu menu Sch E e TEE 7 3 9 Gegen 7 3 10 dEFS parameter 7 3 11 SErv menu 7 4 MENU STRUCTURE 8 THE ALARM LED 11111111111 9 OVER CURRENT PROTECTION 10 DISPLAYED VALUES CALCULATION 1 s ccscsscsecseessensessensessenseasenssensensenseaseaseasenees 10 1 ADDITIONAL CALCULATIONS USED CONVERSION CHARACTERISTIC 10 1 1 Linear characteristic essent 10 1 2 Square characteristic 42 10 1 3 Square root Ee 43 10 1 4 User defined charachertsitc sessi esent nennen nennen nennen 43 10 1 5 Volume characteristics of a cylindrical tank 10 2 EXAMPLES OF CALCULATIONS 45 11 THE MODBUS PROTOCOL HANDDLING eene eee eee ne nnn za thanh nnns naa tn nana ansa natas ar paa nAn Ekai 50 TIAM EIST OFISEGISTERS EE 50 11 2 TRANSMISSION ERRORS DESCRIPTION 11 3 EXAMPLES OF QUERY ANSWER FRAMES p 12 DEFAULT AND USER S SETTINGS LIST sssssssssscssssssesscceessssenssoesensacssnssecenssecsacsanssssensneseeesenseaneasoneas 59 User manual METER SRP 946 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 denoted by this symbol may cause an accident damage or equipment destruction IF
30. Qutmn A A x Lo r where A lower signal value range limit This parameter can be set from 0 to 99 999 for active current output and active voltage output or from 0 to 29 999 for passive current output Parameter Hi r defines higher border of the range due to formula Out 4 B B x Hi r where B higher signal value range limit 33 User manual METER SRP 946 This parameter can be set from 0 to 19 999 for active and passive current output or from 0 to 9 999 for active voltage output In example on page 49 of the DISPLAY VALUES CALCULATION paragraph the procedure of the analogue outputs determining is presented in details AL this parameter determines the behaviour of analogue output if any critical situation occurs According to version of the device this parameter can be set For active current output noCH current will not change 22 1 current will be set to 22 1 mA 3 4 current will be set to 3 4 mA 0 0 current will be set to 0 mA For passive current output noCH current will not change 22 1 current will be set to 22 1 mA 3 4 current will be set to 3 4 mA For active voltage output noCH voltage will not change 11 0 voltage will be set to 11 V 5 5 voltage will be set to 5 5 V 41 2 voltage will be set to 1 2 V 0 6 voltage will be set to 0 6 V 0 0 voltage will be set to 0
31. W 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 15 User manual METER SRP 946 N Figure 4 18 Examples of suppression circuit connection a to relay terminals b to the inductive load OC1 Uo OC1 Uo Logic controller voltage input 24 V Figure 4 19 Example of OC type outputs connection 16 User manual METER SRP 946 ACTIVE current output DD Logic controller current input 0 20 mA Figure 4 20 Example of active current outputs connection for device with active current output only PASSIVE current output Uo Logic controller Isolation loss current input 4 20 mA Figure 4 21 Example of passive current outputs connection for device with passive current output only ACTIVE voltage output DD Logic controller T voltage input 0 10V Figure 4 22 Example of active voltage outputs connection for device with active voltage output only 17 User manual METER SRP 946 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 int
32. and 0 0938 because of the normalized value is lower than O the segment defined by X1 and X2 will be selected X1 PL 0 Y1 PL 50 X2 PH 10 Y2 PH 30 and 0 For these values the displayed value W 69 C ln 20 5 mA and 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 Example 7 Volume characteristics of a cylindrical tank in the vertical position We assume that the user has oil tank in the shape of the cylinder located in vertical position The tank has dimmention height 10m diameter 4m and length of the sensor 10m The output of signal of the sensor has 4 20mA range In first step we set type of input range 4 20mA see parameter MENU gt InPt gt tYPE Next we defined the parameters of tank dimension and location of sensor 47 User manual METER SRP 946 t Sn 00 00 t Sh 10 00 t h1 00 00 t h2 10 00 t h3 00 00 t d 04 00 140 120 100 80 60 V m 3 40 20 2 4 6 8 10 12 14 16 18 20 22 Input current mA Figure 10 6 The volume characteristic of tank depending on input current in 4 20mA range Example 8 Volume characteristics of a cylindrical tank in the horizontal position We assume that the user has tank for wheat in the shape of the cylinder located in hor
33. ange 4 20 mA 41 User manual METER SRP 946 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 Hi C Lo C Lo C where W means the displayed value a 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 p r T T 3 cL r o a Displayed value Displayed value Lo C Hi C I l l l l 0 4 8 12 16 20 0 4 8 12 16 20 Input current mA Input current mA Figure 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 WI x Hi C Lo C Lo C where W means the displayed value Displayed value Displayed value LoC Hi C TN go ps 0 4 8 12 4146 20 0 4 8 12 16 20 Input current mA Input current mA Figure 10 2 Normal Lo C lt Hi
34. ated accordingly to the expression Y PH Y PL X PH X PL W 1 Xx x 100 Y PL where Y PH X PH Y PL X PL mean values of X and Y coordinates of PH and PL points If the normalized result exceeds the user defined characteristic values then specific aD utmost segment defined by two next points is used for calculations If characteristic from figure below is used and if gt 1 then segment defined by points X PL 90 0 X PH 100 0 will be used 43 User manual METER SRP 946 Normalized measurement In for 0 20 mA range 0 0 2 0 35 0 5 0 7 0 9 1 5 elements characteristic I X PH 70 0 Displayed value 0 4 8 12 16 20 Input current mA Figure 10 4 Example of user defined characteristic 10 1 5 Volume characteristics of a cylindrical tank Volume characteristics of a cylindrical tank is defined by parameters of tank see menu inPt Normalized input is proportional to level h and linear scaling by parameters t Sn t Sh for normalized input value equal 0 displays value t Sn and for normalized input value equal 1 displays value t Sh t Sn Figure 10 5 The linear scaling can be expressed as follow hzl t Sh t Sn where h is level of liquids gases or solids in the tank see Figure 7 1 7 2 t Sh t Sn Level h t Sn 0 4 8 12 16 20 Input current mA Figur
35. ay 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 N nominal measurement range d E Ka ra Fr 4mA 20 mA permissible measurement range Figure 6 1 Definitions of measurement ranges in mode 4 20mA 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 and Hi r parameters paragraph inPt menu Hi r parameter nominal measurement range ia Z 0 mA 20 mA permissible measurement range Figure 6 2 Definitions of measurement ranges in mode 0 20mA If the measurement value does not exceed permissible measurement range but displayed value exceeds range 99999 999999 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
36. ble 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 57600 and 115200 bit s respectively 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 37 User manual METER SRP 946 The access to registers no 05h and 06h cant 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 analogue outputs which are controlled via RS 485 interface will set to alert state see OUtP menu and 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 Std answer as quick as possible no additional delay 5 1 Oc 5 5 20c 5 5 50c 5 100c 200c answer delayed of 10 20 50 100 of 200 char
37. bottom border of the measurement range is exceeded Pnt parameter in InPt menu decimal point position BB SEES 0 9 0 Q5 1 0 0 2 0 00 3 0 000 State of the relays and alarm LED binary format 1 on 0 off 00000000 000edcba 05h Yes see descr a relay R1 b relay R2 c relay R3 d relay R2 e F 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 State of active current output expressed in 1 256 mA units it Yes Oh 1800h means that high byte express integer part and low byte fractional part of desired output current State of passive current output expressed in 1 256 mA units it 06h Yes 2CCh 1800h means that high byte express integer part and low byte fractional part of desired output current State of active voltage output expressed in 1 512 V units it means Yes Oh 1600h that high byte express integer part and low byte fractional part of desired output voltage 08h No see descr Peak drop value no decimal point higher word 09h No see descr Peak drop value no decimal point lower word tyPE parameter in InPt menu nominal input range 10h Yes 0 5 0 0 20 mA range 1 4 20 mA range 2 0 10 V range 3 2 10 V range 4 0 5 V range 5 1 5 V range 50 User manual METER SRP 946
38. button v can be used If v is pressed shortly and button is still pressed increasing slow down for a moment only if v is pressed and held while button is still pressed the increasing slow down and will be kept on lower speed To decrease edited value press or press and hold v button only The decreasing became quickest as long as button v is pressed To slow down the decreasing button can be used If 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 25 User manual METER SRP 946 Press ENTER at least 2 seconds to accept the changes after that question Set is displayed and user must to confirm or cancel the changes To conform changes and story it in EEPROM press ENTER button shortly after SEt is displayed To cancel the changes press ESC button shortly after SEt is displayed After that device returns to the menu 7 2 3 Switch parameters LIST type Switch 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 accept
39. cteristics installation of the unit must be conducted correctly and according to the local regulations AY 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 connections 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 located on the housing and report the damage to the manufacturer Attached with the unit please find user s manual warranty assembly brackets 2 pieces 4 2 ASSEMBLY A The unit is designed for mounting inside housings control panel switchboard insuring appropriate protection against surges and interference Metal housings must be connected to ground in a way that complies with the governing regulations Disconnect the power supply prior to starting assembly Check the connections are wired correctly prior to switching the unit on prepared The thickness of the material of which the panel is made must not exceed 5mm Whe
40. e 10 5 The characteristic of level of liquids gases or solids in tank depending on input current in 4 20mA range 44 User manual METER SRP 946 Volume of tank can be write by general formula V f P dh Possible combination of tank shape for calculation the volume cylindrical tank in vertical position cylindrical tank in horizontal position 1 2 Ul parameter th2 0 th3 0 th2 0 th1 0 th1 0 tti ga th3 0 th3 0 th2 0 and horizontal position of tank 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 0 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 result is calculated accordingly to the expression on page 41 so if li 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 input current is equal 2 5 mA then I 2 5 4 16 0 0938 and if input current is equal 20 5 mA then I 2
41. ear 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 earth with the largest possible surface The cables connected to the filter output must not be run with cables with interference e g circuits controlling relays or contactors User manual METER SRP 946 Connections of power supply voltage and measurement signals are executed using the Screw connections on the back of the unit s housing Figure 4 5 Method of cable insulation replacing and cable terminals AY All connections must be made while power supply is disconnected ms Double numeration means that depending on device version particular terminal can be marked according to the top or bottom number A Power Rena 24V 5 10 RS 485 supply Imax 100mA GND DATA depending on version a Uo w X 112 Pla BI i M0 tt t2 t3M4M35 31 32 33 34 35 JUL tid R1 R2 R3 optional optional optional 0 1 5V 0 2 10V Figure 4 6 Terminals description relay outputs Power 24V 5 10 RS 485 supply optional Imax 100mA GND DATA depending on version OC4 IN DATAS T GA BIS Gere 7 10 41 12 13 14 15 31 32 33 34 35 x n c n c OC1 OCH OCH A GND optional optional optional 0 4 20mA OC1 OC4 Umax 30V DC Imax 30mA Pmax 100mw 0 1 5V 0 2 10V Figure 4 7 Terminals description O
42. ed stored in EEPROM end the edition process finished Pressing the key ESC after SEt causes in cancelling of made changes and returning to menu Functions of buttons when editing numeric and switching parameters While editing numeric parameter change of current flashing digit Slide change of value acceleration deceleration direction change While editing switch parameter selection of switch parameter If 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 GO 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 M WEI 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 with special signs pn for m and t for K respectively However i
43. enu 4Bh Yes 0 5 0 noAC mode 1 on mode 2 oFF mode 3 in mode 4 out mode 5 modb mode E t on parameter in rEL2 menu expressed in tenth of seconds or mel TER DEDE tenth of minutes depend on unit parameter register no 4Eh gt toFF parameter in rEL2 menu expressed in tenth of seconds SEH Yes US or tenth of minutes depend on unit parameter register no 4Eh AER Yes 01 unit parameter in rEL2 menu 0 seconds 1 minutes 4Fh Yes 0 2 AL parameter in rEL2 menu 0 no changes 1 on 2 off 50h Yes see descr SEt2 parameter in rEL2 menu no decimal point included higher word 51h Yes sge descr SEt2 parameter in rEL2 menu no decimal point included lower word 52h Yes ses descr SEtP parameter in rEL3 menu no decimal point included higher word 53h Yes see descr SEtP parameter in rEL3 menu no decimal point included lower word 54h Yes Sec descr HySt parameter in rEL3 menu no decimal point included higher word 55h Yes See descr HySt parameter in rEL3 menu no decimal point included lower word modE parameter in rEL3 menu 56h Yes 0 5 0 noAC mode 1 on mode 2 oFF mode 3 in mode 4 out mode 5 modb mode 53 User manual METER SRP 946 Regist
44. er Write Range Register description R t on parameter in rEL3 menu expressed in tenth of seconds or SH gt BEE tenth of minutes depend on unit parameter register no 59h E toFF parameter in rEL3 menu expressed in tenth of seconds SEN dE E or tenth of minutes depend on unit parameter register no 59h 59h Yes 021 unit parameter in rEL3 menu 0 seconds 1 minutes 5Ah Yes 0 2 AL parameter in rEL3 menu 0 no changes 1 on 2 off 5Bh Yes sea descr SEC parameter in rEL3 menu no decimal point included higher word SCH Yes Sed descr SEt2 parameter in rEL3 menu no decimal point included lower word 5Dh Yes see descr SEtP parameter in rEL4 menu no decimal point included higher word BEh Yes Sea descr SEtP parameter in ELA menu no decimal point included lower word 5Fh Yes sae descr HySt parameter in rEL4 menu no decimal point included higher word 60h Yes s a descr HySt parameter in rEL4 menu no decimal point included lower word modE parameter in rEL4 menu 61h Yes 0 5 0 noAC mode 1 on mode 2 oF F mode 3 in mode 4 out mode 5 modb mode R t on parameter in rEL4 menu expressed in tenth of seconds or gen ve EE tenth of minutes depend on unit parameter register no 64h toFF parameter in rEL4 menu expressed in tenth of seconds Bon SP DOES or tenth o
45. ernal components and shorten the fault free time of the unit s 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 AY Using any other agents can cause permanent damage to the housing V Product marked with this symbol should not be placed in municipal waste Please f X check local regulations for disposal of electronic products 5 FRONT PANEL DESCRIPTION Thresholds exceeding LED indicators R KW F LED alarm indicator EXC R1 R26 R36 R46 Fe soy EEEE programming ENTER pushbuttons MENU zj Symbols and functions of push buttons Symbol used in the manual ESC MENU MENU Functions Enter to main menu press and hold by at least 2 sec Exit the current level and Enter to previous menu or measure mode Cancel the changes made in parameter being edited Symbol used in the manual ENTER Functions Start to edit the parameter Enter to the sub menu Confirmation of changes made in parameter being edited Symbol used in the manual v Functions Change of the present menu Modification of the parameter value Change of the display mode ENTER 18 User manual METER SRP 946 6 PRINCIPLE OF OPERATION After turning the power supply on device ID and software version are showed on the displ
46. expression Imin 4 MA 4 mA x Lor The Lo r value can be set from 0 to 99 999956 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 96 The value of Hi r can be set from O to 19 999 In example no 1 of the DISPLAY VALUES CALCULATION paragraph the procedure of the permissible input range determining is presented in details If the measurement value does not exceed permissible measurement range but displayed value exceeds range 99999 999999 the warning Ov is displayed rather than the calculated result 7 3 4 OutP menu This menu contains parameters of analogue output control Menu is available if the device is equipped witch analogue output e Omod 34 Analogue output can be controlled depend on both present measured value and peak value if peak detection is enabled analogue output mode Depending on version of the device there are following options For active current output OFF current output disabled 0 20 current output enabled with 0 20 mA mode User manual METER SRP 946 4 20 current output enabled with 4 20 mA mode modb current output controlled via RS 485 interface For passive current output oFF current output disabled 4 20
47. f minutes depend on unit parameter register no 64h 64h Yes 021 unit parameter in rEL4 menu 0 seconds 1 minutes 65h Yes 0 2 AL parameter in rEL4 menu 0 no changes 1 on 2 off 66h Yes sae descr SEt2 parameter in rEL4 menu no decimal point included higher word 67h Yes sea descr SEt2 parameter in rEL4 menu no decimal point included lower word 68h Yes 01 modE parameter in HOLd menu type of detected changes 0 peaks 1 drops 69h Yes aio decur PEA parameter in HOLd menu minimum detectable change no decimal point included higher word 6Ah Yes sae descr PEA parameter in HOLd menu minimum detectable change no decimal point included lower word 6Bh Yes 0 199 timE parameter in HOLd menu maximum peaks or drops display time expressed in seconds 54 User manual METER SRP 946 Register Write Range Register description n HdiS parameter in HOLd menu ech Y6 vili 0 rEAL mode 1 HOLd mode H r1 parameter in HOLd menu MAC 0 1 g rEAL mode 1 HOLd mode H r2 parameter in HOLd menu En Yes 0 o EAL mode 1 HOLd mode 2 H r3 parameter in HOLd menu SE ER SH 0 rEAL mode 1 HOLd mode x H r4 parameter in HOLd menu roh Yes 0 1 Q rEAL mode 1 HOLA mode HOUt
48. he environment temperature 10 DISPLAYED VALUES CALCULATION For simplicity of examples it s 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 20mA range and 4mA for 4 20mA range must be subtracted from measured value Next received result must be divided by the width of the input range it means 20mA for 0 20mA range and 16mA for 4 20mA range So normalized result can be expressed by expressions Ii 4 a 16 for 4 20mA range L inp dea for 0 20mA range where lin means input current in mA and In normalized result If measured value exceeds the nominal input range 0 20mA or 4 20mA and do a not exceed the permissible input range then received normalized result exceeds 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 r
49. ic signal menu bEEP AL Activation of acoustic signal by critical situation oFF 29 r1 Activation of acoustic signal by relay R1 oFF 29 r2 Activation of acoustic signal by relay R2 oFF 29 r3 Activation of acoustic signal by relay R3 oFF 29 r4 Activation of acoustic signal by relay R4 oFF 29 Configuration of measurement input inPt menu tYPE Input mode A 20 29 CHAr Conversion characteristic mode Lin 29 FiLt Filtering ratio 0 30 Pnt Decimal point position 0 0 30 LoC Minimum displayed value for nominal range 000 000 30 Hi C Maximum displayed value for nominal range 100 000 30 60 User manual METER SRP 946 Parameter Description Default value User s value phas th1 Height length first part of the tank 00 00 30 th2 Height length second part of the tank 00 00 30 t h3 Height length third part of the tank 00 00 30 td Tank diameter 00 01 30 tSn Distance between sensor and bottom of the tank 00 00 31 tSh Height of the sensor 20 00 31 Lor Extension of the bottom of the nominal input range 5 000 96 33 Hir Extension of the top of the nominal input range 5 000 96 33 Active current output configuration OUtP menu Omod Active current output mode 0 20 mA 34 OUtL Display value for 0 mA or 4 mA current output 0 000 35 OUtH Display value for 20 mA current output 100 000 35 Lor Extension of the bottom of the nominal outpu
50. ing on version Humidity Altitude Screws tightening max torque Max connection leads cross section Safety requirements EMC 50 ppm C 99999 999999 plus decimal point RS 485 8N1 and 8N2 Modbus RTU not separated 1200 bit s 115200 bit s LED 6 digit 13 mm height red or LED 6 digit 13 mm height green non volatile memory EEPROM type IP 65 optional version with panel cut out sealing available IP 20 panel NORYL GFN2S E1 96 x 48 x 100 mm 90 5 x 43 mm 102 mm max 5 mm 0 C to 50 C or 20 C to 50 C 10 C to 70 C or 20 C to 70 C 5 to 90 no condensation up to 2000 meters above sea level 0 5 Nm 2 5 mm according to PN EN 61010 1 installation category II pollution degree 2 voltage in relation to ground 300V AC insulation resistance gt 20MQ insulation strength between power supply and input output terminal 1min 2300V insulation strength between relays terminal 1min 1350V according to PN EN 61326 1 User manual METER SRP 946 This is a class A unit In a residential 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 chara
51. int use EdtP option To distinguish X and Y coordinates if X coordinate is displayed an additional decimal point on utmost right position is displayed If user defined characteristic is selected and if number of defined points is lower than 2 then warning Errc is displayed in measurement mode 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 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 M
52. itical situation of relay R1 oFF 28 Parameters of relay R2 operation rEL2 menu SEtP Relay R2 threshold 40 000 27 SEt2 Relay R2 second threshold 60 000 27 HYSt Hysteresis of relay R2 0 000 27 modE Operation mode of relay R2 on 27 ton Turn on delay of relay R2 0 0 28 59 User manual METER SRP 946 Parameter Description Default value User s value pena toFF Turn off delay of relay R2 0 0 28 unit Unit of t on toFF parameters of relay R2 SEC 28 AL Reaction for critical situation of relay R2 oFF 28 Parameters of relay R3 operation rEL3 menu SEtP Relay R3 threshold 60 000 27 SEt2 Relay R3 second threshold 80 000 27 HYSt Hysteresis of relay R3 0 000 27 modE Operation mode of relay R3 on 27 ton Turn on delay of relay R3 0 0 28 toFF Turn off delay of relay R3 0 0 28 unit Unit of t on toFF parameters of relay R3 SEC 28 AL Reaction for critical situation of relay R3 oFF 28 Parameters of relay R4 operation rEL4 menu SEtP Relay R4 threshold 80 000 27 SEt2 Relay R4 second threshold 100 000 27 HYSt Hysteresis of relay R4 0 000 27 modE Operation mode of relay R4 on 27 ton Turn on delay of relay R4 0 0 28 toFF Turn off delay of relay R4 0 0 28 unit Unit of t on toFF parameters of relay R4 SEC 28 AL Reaction for critical situation of relay R4 oFF 28 Activation of acoust
53. izontal position The tank has dimension height in first part is 2m height in second part is 8 05m diameter 3 26m and length of the sensor 10m The output of signal of the sensor has 4 20mA range In first step we set type of input range 4 20mA see parameter MENU InPt tYPE Next we defined the parameters of tank dimension and location of sensor t Sn 00 00 t Sh 10 00 t h1 02 00 t h2 08 05 t h3 200 00 t d 03 26 48 User manual METER SRP 946 80 70 60 50 40 30 20 10 V m3 3 4 5 6 7 8 9 10 I mA Figure 10 7 The volume characteristic of tank depending on input current in 4 20mA range Example 9 Analogue output value calculation Lets assume that we have active current output and its parameters are modE 4 20 OUtL 100 OUtH 200 Lo r 5 0 Hir 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 35 lout 17 5 10 0 20 0 10 0 x 16 mA 4 mA 0 75 16 4 16 mA Calculated lo do not exceeds the output working range 3 8 21 mA b D 7 20 5 According to formula from page 35 lou 20 5 10 0 20 0 10 0 x 16 mA 4 mA 1 05 16 4 20 08 mA Calculated l do not exceeds the output working range 3 8 21 mA c D 2 30 0 According to formula from page 35 lo
54. ls description OC type and passive current outputs Power e 24V 5 10 RS 485 supply weree Imax 100mA GND _ DATA depending on version Tuer DATA 4 4 112 314 CEEE 0 4 20mA R1 R2 optional optional 0 1 5V 0 2 10V Figure 4 12 Terminals description relay and active voltage outputs Power ETE 24V 5 10 RS 485 Supply EL ee GND DAT depending on version Tuer DATA m m 4 4 112 Te Bere h c DC n c n c OC1 oc2 lol optional optional H GND 0 4 20mA OC1 OC2 Umax 30V DC Imax 30mA Pmax 100mW 0 1 5V 0 2 10V Figure 4 13 Terminals description OC type and active voltage outputs 13 User manual METER SRP 946 24V DC Figure 4 16 Connection of voltage converters User manual METER SRP 946 Depending on version 85 230 260V AC DC or 19 24 50V DC 16 24 35V AC L N Figure 4 17 Connection of power supply and relays 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 47nF min 250VAC in series with 100R 5
55. ment must meet the appropriate standards and regulations concerning safety and be equipped with adequate overvoltage and interference filters Do not attempt to disassemble repair or modify the unit yourself The unit has no user serviceable parts Defective units must be disconnected and submitted for repairs at an authorized service centre User manual METER SRP 946 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 areas where there is risk of explosions Do not use the unit in areas with significant temperature variations exposure to condensation or ice 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 The unit is designed for operation in an industrial environment and must not be used in a household environment or similar 2 GENERAL CHARACTERISTICS The SRP 946 meter is equipped with one current input 0 20 4 20mA and one voltage input 0 5 1 5 0 10 2 10V Current input has additionally overcurrent protection circuit which protects standard resistor The selection of acti
56. n preparing the mounting hole take the grooves for catches located on both sides of the housing into consideration Figure 4 1 4 2 Place the unit in the 1 In order to install the unit a 90 5 x 43 mm mounting hole Figure 4 1 4 2 must be 7 User manual METER SRP 946 mounting hole inserting it from the front side of the panel and then fix it using the brackets Figure 4 3 The minimum distances between the centre points of multiple units due to the thermal and mechanical conditions of operation are 115 mm x 67mm Figure 4 4 90 5 mm y A max 5 mm Figure 4 1 Recommended mounting hole dimensions 92 mm a SS U N max 5 mm o NN Figure 4 2 Allowable mounting hole dimensions User manual METER SRP 946 5mm 92 mm 16 mm Ir f2mm mm 10mm mm ELI Figure 4 3 Installing of brackets and dimensions of connectors Spee EZ Figure 4 4 Minimum distances when assembly of a number of units 67 mm 4 3 CONNECTION METHOD Caution AN 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 Beca
57. n user manual letters m and K are used to make it more readable example modE tc K a Due to problem with direct displaying of m and K letters they are exchanged 26 User manual METER SRP 946 7 3 1 rEL1 menu 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 e SEtP SEt2 HYSt d modE 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 f 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 99999 999999 Negative values can be input by selecting a 7 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 99999 999999 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 o
58. odification of the coordinates is done accordingly to numerical parameters edition AddP dELP and EdtP options are available only if the user defined characteristic is used it means when parameter CHA 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 3 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 33 User manual METER SRP 946 Lo r 75 0 3 mA Hi r 5 0 1 mA Ki nominal measurement range 4 20mA E permissible measurement range z Fa Fa x Si measurement result is displayed M display regardless on nominal range exceeding display message Lo message Hi e Figure 7 3 Example of definition of permissible range of input signal Lo r and Hi r parameters 4 20 mode The Lo r parameter is important if input is set to 4 20 1 5 or 2 10 mode only and determines lower border of the permissible range If input is set to 0 20 0 5 or 0 10 mode then lower border of the permissible range is always 0 For example if input is set to 4 20 mode then lower border is calculated due to
59. 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 10 Avoid running signal cables and transmission cables together with power supply cables and cables controlling inductive loads e g contactors Such cables should cross at a right angle Contactor coils and inductive loads should be equipped with 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 In the case of magnetically induced interference the use of twisted pair of signal cables is recommended Twisted pair best if shielded must be used with RS 485 serial transmission connections In the case of measurement or control signals are longer than 30m or go outside of the building then additional safety circuits are required In the case of interference from the power supply side the use of appropriate interference filters is recommended B
60. r out value Threshold is the medium value of relay hysteresis hysteresis of relay range 0 99999 Full hysteresis of the relay is equal to 2 times HYSt parameter The relay state can change when an input signal is out of threshold hysteresis to threshold hysteresis zone Presented parameters should be set to ensure that SEtP HYSt SEt2 HYSt SEtP Se HYSt Or SEt2 e HYSt does not exceed 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 can t change his state 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 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 threshold
61. r pressing or v button a If particular parameter has been changed and confirmed in quick view mode its 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 AY Pay attention when device parameters are being changed If it is possible turn off controlled installation machine 24 User manual METER SRP 946 Functions of the buttons while sub menu and parameters choice Selection of sub menu or parameter for editing Name of selected item sub menu or parameter is displayed Operation of ENTER button depend on present menu position 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 if the name of some parameter is displayed enter the edition of this parameter present value of the parameter is displayed ENTER ESC MENU button allow user
62. rol rEAL 37 Hr2 Source of relay R2 and LED R2 control rEAL 37 H r3 Source of relay R3 and LED R3 control rEAL 37 H r4 Source of relay R4 and LED R4 control rEAL 37 HOUt Source of current output control rEAL 37 Settings of access to the configuration parameters SECu menu Art Permission to changes of relay R1 threshold an 37 without of the user password knowledge Ar2 Permission to changes of relay R2 threshold o 37 without of the user password knowledge Ar3 Permission to changes of relay R3 threshold on 37 without of the user password knowledge Au Permission to changes of relay R4 threshold Sp 37 without of the user password knowledge RS 485 interface configuration menu rS Addr Device address 0 37 bAud Baud rate 9 6 37 mbAc Permission to changes of configuration registers on 37 mbtO Maximum delay between received messages 0 38 rESP Additional delay of answer transmission Std 38 Configuration of numerical parameters edition Edit Numerical parameters edit mode dig 38 62 User manual METER SRP 946 63 fj simex SIMEX Sp z 0 0 ul Wielopole 11 80 556 Gda sk Poland tel 48 58 762 07 77 fax 48 58 762 07 70 http www simex pl e mail info simex pl
63. s 27 User manual METER SRP 946 t on toFF unit AL 28 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 LEDs light when relays are closed independently of relays mode When power supply fail unit do not store relays state selected by RS 485 interface 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 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 If time when the input signal exceeds some border value is shorter than t on or toFF time the relay do not change
64. s respectively where one character time depends on selected baud rate Unfortunately for some third party RS converters rESP should be adjusted a In the most cases parameter rESP should be set to Std no additional delay experimentally Table 7 1 contains most frequently used values bAud parameter 38 4 57 6 415 2 rESP parameter 10c 20c 50c Tab 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 SEt 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 38 User manual METER SRP 946 7 4 MENU STRUCTURE amp Measurement mode
65. s ses descr t h3 parameter in InPt menu no decimal point included lower word 2Eh Yes sae descr t d parameter in InPt menu no decimal point included higher word 2Fh Yes sge d sck t d parameter in InPt menu no decimal point included lower word 30h Yes Se descr t Sn parameter in InPt menu no decimal point included higher word 31h Yes ses descr t Sn parameter in InPt menu no decimal point include lower word 32h Yes Ge descr t Sh parameter in InPt menu no decimal point included higher word 33h Yes se descr t Sh parameter in InPt menu no decimal point included lower word 34h Yes 0 1 AL parameter in bEEP menu 0 off 1 on 35h Yes 0 1 R1 parameter in bEEP menu 0 off 1 on 36h Yes 0 1 R2 parameter in bEEP menu 0 off 1 on 37h Yes 0 1 R3 parameter in bEEP menu 0 off 1 on 38h Yes 0 1 R4 parameter in bEEP menu 0 off 1 on E bri parameter display brightness U ka 1 the lowest brightness 8 the highest brightness 3Bh Yes 01 Edit parameter numerical parameters edit mode j 0 dig mode 1 SLid mode 3Ch Yes Sas descr SEtP parameter in rEL1 menu no decimal point included higher word 3Dh Yes Seo descr SEtP parameter in rEL1 menu no decimal point included lower word 3Eh Yes Ses duscr HySt parameter in rEL1 menu no decimal point included higher word 3Fh Yes s o
66. s 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 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 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 new value is displayed in alternating mode with parameter name by few seconds Confirmed changes may be checked or user can switch viewed paramete
67. t 5 000 35 range Hir Extension of the top of the nominal output range 5 000 35 AL Current output value on critical exception 22 1 mA 36 Passive current output configuration OUtP menu Omod Passive current output mode 4 20 mA 34 OUtL Display value for 4 mA current output 0 000 35 OUtH Display value for 20 mA current output 100 000 35 Lor Extension of the bottom of the nominal output 5 000 35 range Hir Extension of the top of the nominal output range 5 000 96 35 AL Current output value on critical exception 22 1 mA 36 Active voltage output configuration OUtP menu Omod Active voltage output mode 0 10 V 34 OUtL Display value for 0 V 1 V or 2 V voltage output 0 000 35 OUtH Display value for 5 V or 10 V voltage output 100 000 35 Lor Extension of the bottom of the nominal output 5 000 35 range Hir Extension of the top of the nominal output range 5 000 96 35 AL Voltage output value on critical exception 11 0 V 36 Display parameters bri Display brightness bri6 36 Configuration of peaks detection function HOLd menu 61 User manual METER SRP 946 Parameter Description Default value User s value pen modE Kind of detected changes norm 36 PEA Minimum detected change 0 0 36 timE Maximum time of peak displaying 0 0 36 HdiS The type of displayed value HOLd 37 Hr Source of relay R1 and LED R1 cont
68. tained 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 U HYSt parameter Figure 6 4 One threshold control of the relay LED outputs state of relay LED SEEN or SEt2 SB measure HYSt Figure 6 5 Two threshold control of the relay LED outputs aD 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 21 User manual METER SRP 946 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 A t Lk t signal s SEtP parameter gt lt RARE Ge e expected signal value a zone A i ie d 4 i HYSt parameter zone B ua 54d CH allowed signal d Erg d DA deviation b relay state 4 i i me modE on EI ri ton 0 SB id MEME toFF 0 I EE I i dias E ER E NENNEN ime c relay state 4 rot f E Li EMEN modE oFF 4 BEEN ton 0 E i SE i _ toFF 0 E i E E RT ZE ime d relay state 4 po kod m i IT modE ont o HH V dog Ap EE ton gt 0 oe EH toFF gt 0 Open I I m I SE Pod ae bd 14 ime bod i KA i ist m
69. then setting parameter timE 0 0 causes holding peak value until ESC button is pressed If HdiS rEAL then value timE 0 0 means no holding Displaying peak value is signalized by flashing most right decimal point The relays LEDs and analogue outputs can be controlled depend on the current value of input signal or the peak value see HOLd menu A measure timE timE PEAY real measurement result time display value Figure 6 3 Process of peaks detection 20 User manual METER SRP 946 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 If device is not equipped with one or more relay outputs menus refer to this relays aD 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 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 con
70. till possible see parameter Menu gt inPt gt Pnt If in the volume characteristics of a cylindrical tank is exceeded the value of the volume of the tank sets by parameters available in menu inPt instead of the calculated result will be display warning Hi 3l User manual METER SRP 946 tSh h I mA tSh h I mA EE Figure 7 2 Parameters of cylindrical tank in horizontal position 32 User manual METER SRP 946 AddP dELP EdtP e 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 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 99 999 199 999 Coordinate Y defines displayed value for particular X value The Y value can be changed in range 99999 999999 decimal point position depend on Pnt parameter menu inPt e User can not enter two points with the same value of X coordinate If user trays to do it Err warning is displayed To modify any defined po
71. use of this an external time delay cut out fuse with a small nominal current value must be used recommended bipolar max 2A and a power supply circuit breaker located near the unit In the case of using a monopolar fuse it must be mounted on the phase cable L The power supply network cable diameter must be selected in such a way that in the case of a short circuit of the cable from the side of the unit the cable shall be protected against destruction with an electrical installation fuse User manual METER SRP 946 AY Wiring must meet appropriate standards and local regulations and laws In order to secure against accidental short circuit the connection cables must be terminated with appropriate insulated cable tips Tighten the clamping screws The recommended tightening torque is 0 5 Nm Loose screws can cause fire or defective operation Over tightening can lead to damaging the connections inside the units and breaking the thread In the case of the unit being fitted with separable clamps they should be inserted into appropriate connectors in the unit even if they are not used for any connections Unused terminals 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 to protecting against water intrusion pay special attention to their correct tightening
72. ut 30 0 10 0 20 0 10 0 x 16 MA 4 mA 2 16 4 36 mA Calculated l 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 and Hi r it means 21 mA 49 User manual METER SRP 946 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 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 06h single registers or 10h group of the registers accordingly to Modbus RTU specification Maximum group size for 03h and 10h functions can not exceeds 16 registers for single frame a 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 see descr Measurement value no decimal point higher word 02h No see descr Measurement value no decimal point lower word The status of the current measurement Oh data valid AOh top 03h No Oh AOh 60h border of the measurement range is exceeded 60h
73. utput and Dei Yes RER active voltage output expressed in 0 001 lower word Yes Ge descr Lo r parameter in OUtP menu for passive current output expressed in 0 001 lower word Hi r parameter in OUtP menu for active and passive current Bani YES pes desch output expressed in 0 001 higher word Hi r parameter in OUtP menu for active voltage output ves see descr expressed in 0 001 higher word Hi r parameter in OUtP menu for active and passive current Dess Yes see descr output expressed in 0 001 lower word Yes see descr Hi r parameter in OUtP menu for active voltage output expressed in 0 001 lower word Yes 023 AL parameter in OUtP menu active current output value on critical exception 0 no change 1 22 1 mA 2 3 4 mA 3 0 mA Yes 022 AL parameter in OUtP menu passive current output value on D9h critical exception 0 no change 1 22 1 mA 2 3 4 mA AL parameter in OUtP menu active voltage output value on Yes 0 5 critical exception 0 no change 1 11 V 2 5 5 3 1 2 V 4 0 6V 5 0V RON 56 these registers are active only if device is equipped with current or voltage output after writing to register no 20h the device responds with an old address in the message after writing to register no 22h the device responds with the new baud rate the value of the mbAc parameter is also connected to write to this
74. ve input is realised by software and selected input can be changed at any time Additionally the SRP 946 allows user to select a conversion characteristic of several kinds linear square square root user defined max 20 points length and and volume characteristics of a cylindrical tank in the vertical and horizontal position Result is showed on 6 digit LED display Displayed values range can be selected by user from 99999 to 999999 plus decimal point The device can be equipped with two or four relay or OC type outputs Optionally SRP 946 with two relays or OC type outputs can be equipped with active current output passive isolated current output or active voltage output Device SRP 946 is equipped with RS 485 Modbus RTU communication interface and sensor supply output The meter can be ordered in two power supply versions SRP 946 can be used for controlling and regulation of processes need proportional and threshold control like temperature processes heating or cooling valves controlling or other User manual METER SRP 946 3 TECHNICAL DATA Power supply voltage depending on version External fuse required Power consumption 85 230 260V AC DC 50 60 Hz separated or 19 24 50V DC and 16 24 35V AC separated T type max 2A max 6 5 VA 85 260V AC DC max 6 5 VA 16V 35V AC max 6 5 W 19V 50V DC Current input Current measurement accuracy Current input resistance Accepted
75. w for details of the parameters n h volume characteristics of a cylindrical tank in the horizontal position determined by parameters t h1 t h2 t h3 t d t Sn t Sh in InPt menu see below for details of the parameters If user defined characteristic is selected and if number of defined points is lower than 2 then warning Errc is displayed in measurement mode 29 User manual METER SRP 946 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 Di 0 73 0 0 Di 0 00 0 000 Decimal point position is changed by v buttons Lo C These parameters describe the values displayed for minimum and maximum input Hi C signal value for selected input type 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 99999 999999 Negative values can be set by entering sign on the first position by use of v buttons If volume characteristics of a cylindrical tank is selected parameter CHAr tn a v or CHAr
76. w poi relay state A bg Ded ton bg toFF 7 bd e modE oFF 1 closed i gt parameter Parameter EE ton gt 0 t open toFF 0 Lol ee 1 ng lt gt I my ime N toFF t on Gg 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 ts tc to time periods while input signal is in zone A or zone B Figure 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 to 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 O 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 the

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