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STI-N118 - products

1. 0 4 digit user password entering if it is different from 0000 na rELAy1 R S sgtp k Parameter i EE edition aj sb i imi SEt P2 II e rELAy2 Options similar to rELAy1 menu HYSt l t mm lt modE I t j ton I i bi toFF ol unit I H ALArmS I ESC Y z i inPUt Z Freq k De r SE PULSEn I Em ca es Prec u OUtPUt gt Outmod gt Parameter F 4 x B edition t mw lt unit I m OUt Lo II Ej SEE i bei ForP l el OUtHi i Fe mUL un SR Lor len i 7 t bei div II i bei Hir S i i I ZErot I I AL t option mEASt i vALUE Z Parameter ESC Y FiLtEr D Y See next page em edition e droP l 31 User manual RATEMETER STI NI 18 See previous page 32 4 4 _V uc M briGHt gt gt daj BG mmm gt l wd Parameter kj HOLd z ModE edition r Gu ei PEA I H M timE l E Hdis I H bei Hr i bei Hr P Hout A option Y LB seu LEN SEtcod a a
2. 4 Change of baud rate of all devices connected to the net BROADCAST message ADDR FUNC REGH L COUNT HL CRC LH 00 06 00 22 00 04 29 D2 DATAH 0 DATA L 4 new baud rate 19200 baud 39 User manual RATEMETER STI NI 18 a Device do not reply to BROADCAST type messages 5 Try to write improper data to register register 04h ADDR FUNC REG H L DATA H L CRC LH 01 06 00 04 00 10 C9 C7 DATAH L written value 10h 16 out of allowable range 0 5 Device response with exception code 03h ADDR FUNC ERR CRC LH 01 86 03 09 C1 a There is no full implementation of the Modbus Protocol in the device The functions presented above are available only 40 User manual RATEMETER STI NI18 11 DEFAULT AND USER S SETTINGS LIST Parameter Description Default value User s value ped Parameters of relay R1 operation rELAy1 menu SEtP Relay first threshold 20 0 23 SEt P2 Relay second threshold 30 0 23 HYSt Hysteresis of relay 0 0 23 modE Operation mode of relay yin 23 ton Turn on delay of relay 0 0 sec 24 t oFF Turn off delay of relay 0 0 sec 24 unit Unit of t on toFF parameters of relay SEC 24 ALArmS Reaction for critical situation of relay oFF 24 Parameters
3. Figure 4 13 Example of current output connection using external power supply 4 4 MAINTENANCE The unit does not have any internal replaceable or adjustable components available to the user Pay attention to the ambient temperature in the room where the unit is operating Excessively high temperatures cause faster ageing of the internal components and shorten the fault free time of unit operation In cases where the unit gets dirty do not clean with solvents For cleaning use warm water with small amount of detergent or in the case of more significant contamination ethyl or isopropyl alcohol A Using any other agents can cause permanent damage to the housing U Product marked with this symbol should not be placed in municipal waste Please v check local regulations for disposal and electronic products 5 FRONT PANEL DESCRIPTION alarm LED indicator AL Thresholds exceeding lt LED indicators R infrared receiver 5655568 display programming pushbuttons 13 User manual RATEMETER STI NI 18 Symbols and functions of push buttons Symbol used in the manual ESC MENU MENU Functions ENTER 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
4. min minutes SEC seconds ALArmS this parameter defines the relay reaction when some critical situations occurs noCHAn 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 permissible input frequency is exceeded If parameter modE is set to modbuS the critical situation means communication delay when no data is received longer than mbtimE parameter see description rS 485 menu 7 3 2 inPUt menu This menu contains options of pulse input configuration FrEq 24 maximum permitted frequency of pulses delivered to the input This parameter is expressed in Hz And can be set to one of all values showed in Tab 7 1 Minimum permitted duration time of Low and High states are related to every value of FrEq parameter If particular state is shorter than showed in Tab 7 1 it is interpreted as disturbance and ignored User manual RATEMETER STI NI18 Parameter Minimum duration Permitted duty cycle FrEq Hz of low and high states for max frequency 10 5 ms 596 9596 15 3 4 ms 5 95 20 2 5 ms 5 95 30 1 7 ms 5 95 40 1 3 ms 5 95 50 1 ms 5 95 100 500 us 5 95 300 167 us 5 95 4 000 50 us 5 95 3 000 33 us 10 90 10 000
5. malt SER time c relay state ARE E t dem od modE oFF it di I bd i I i ton 0 Gef toFF 0 i i gt p I AE i f PEE time d relay state A os I ME bd I EENG modE on NE ak m P LE ton gt 0 p cl i to j aj l toFF gt 0 DN i Hl 1 1 tot te tt time ot Tw i D MET Lg l e relay state A bog Def ton TN oFF A bd modE oFF closed t parameter parameter AB t oFF gt 0 o e I gt I l time t OFF ton Description parameter parameter 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 t OFF gt 0 ta te te to time periods while input signal is in zone A or zone B Figure 6 4 Principle of LED relay output operation for one threshold mode 17 User manual RATEMETER STI NI 18 Parameter SEtP sets a threshold of the relay and parameter HYSt sets a hysteresis of the relay Figure 6 4 a The relay can change his state only when input value exceeds over or under border value and ta te tc to times Figure 6 4 are bigger than the time defined by parameters t on t oFF and unit Border values means values equal threshold hysteresis and threshold hysteresis respectively If t on and t oFF parameters are set to 0 then the relay state will be changed as soon as input value exceeds any o
6. If two threshold mode is used modE parameter defines state of the relay output when the input value occurs in a particular zone defined by border values of both 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 5 19 User manual RATEMETER STI NI 18 The seguence of thresholds SEt P and SEt P2 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 guick view mode After pressing or v button name of the threshold e g rELPr1 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
7. 100c one character time depends on selected baud rate 200c In the most cases parameter rESP should be set to Std no additional delay aD Unfortunately for some third party RS converters rESP should be adjusted experimentally Table 7 2 contains most frequently used values bAud parameter 38400 57600 115200 rESP parameter 106 20c 50c Tab 7 2 Settings of rESP parameter 7 3 9 Edit t 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 30 User manual RATEMETER STI NI18 7 4 MENU STRUCTURE Measurement mode Y Press and hold at least 2 seconds
8. enter the edition of this parameter present value of the parameter is displayed ENTER ESC MENU button allow user 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 edite
9. 0 00000 unit parameter in inPUt menu R Ze kaka 0 rev sec 1 rev min 2 rev hour 14h M mUL parameter in inPUt menu 15h Yes 0 999999 Value 0 is interpreted as 1 000 000 16h m div parameter in inPUt menu 17m Yes 07 999999 Value 0 is interpreted as 1 000 000 18h Yes 0 399 ZEro t parameter in inPUt menu expressed in tenth of seconds 19h Yes 0 199 mEAS t parameter in inPUt menu expressed in tenth of seconds 1Ah Yes 0 199 vALUE parameter in FiLtEr menu measurement filtering rate 1Bh Yes 0 7 1999 droP parameter in FiLtEr menu expressed in tenth of percent 20h Yes 0 199 Device address 21h No 205Ch Device identification code ID 35 User manual RATEMETER STI NI 18 Register Write Range Register description bAud parameter in rS 485 menu baud rate 22h Yes 0 7 0 1200 baud 1 2400 baud 2 4800 baud 3 9600 baud 4 19200 baud 5 38400 baud 6 57600 baud 7 115200 baud 23h5 Yes 0 1 mbAccE parameter in rS 485 menu permission to write registers via RS 485 interface 0 write denied 1 write allowed Parameters of SECU menu binary format 0 oFF 1 on zm AR EE bit 0 Acc r1 parameter bit 1 Acc r2 parameter rESP parameter in rS 485 menu additional response delay 25h Yes 0 5 0 no
10. 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 6 PRINCIPLE OF OPERATION After turning the power supply on device ID and software version are showed on the display next the controller goes to the measurement mode 6 1 MEASUREMENT MODE In the measurement mode the device shows current measurement value rotational Speed or time per one revolution it depends on F or P parameter with resolution defined by PrEc parameter max 5 digits after decimal point Pulses delivered to the input Figure 4 10 are converted in manner described below 14 If duration of LOW or HIGH state is lower than time defined by parameter FrEq see Tab 7 2 on page 30 pulses are interpreted as disturbances and ignored If duration of both states is in the defined range but their frequency is lower than value of FrEq parameter the device goes to alarm state relays and current output if mounted are switched to their alarm states defined by their ALArmS parameters In this state message Hi is displayed instead of measurement value In other cases during frequency and duration of the signal are in permitted ranges pulses are delivered to internal frequency divider The divider see description of parameter PULSen should be set to value equal the number of pulses per
11. Parameters mul and div can be used to rescale of measurement value setting proper values recalculation of rotational speed to linear speed can be done automatically ZEro t maximum delay time of successive revolution This parameter is defined with 0 1 second precision in range 0 39 9 If delay between successive revolutions are longer than defined value device displays 0 instead of current measurement If parameter ZEro t is set to value lower than parameter mEAS t the mEAS t value is used as maximum delay to next revolution time Expression successive revolution means the number of input pulses equals to value of parameter PULSen mEAS t minimum measurement window width The measurement window means the time period after which counted pulses are recalculated and displayed and it is similar to refresh rate This parameter can be set with 0 1 sec resolution in range 0 19 9 sec If time delays between successive pulses are longer than mEAS t time then a measurement window width is automatically fitted to input frequency 7 3 3 FiLtEr menu This menu contains parameters referred to additional data result filtration vALUE this parameter sets filtration rate It can be set to values from 0 no filtration to 5 strongest filtration time window about 3 5 sec droP this parameter defines minimum percentage change of measured value which turns off temporally data filtrati
12. additional delay 1 10c option 2 20c option 3 50c option 4 100c option 5 200c option mbtimE parameter in rS 485 menu maximum delay between 27h Yes 0 99 received frames 0 no delay checking 1 99 maximum delay expressed in seconds briGHt parameter display brightness zn Me e 1 the lowest brightness 8 the highest brightness R Edit parameter numerical parameters edit mode GE 0 1 9 dig mode 1 SLid mode Parameters or relay R1 operation 30h Yes 0 999999 d F 31h Yes SEt P parameter in rELAy1 menu no decimal point included nin 0 99999 HySt parameter in rELAy1 menu no decimal point included 33h Yes modE parameter in rELAy1 menu 34h Yes 0 5 0 noACt mode 1 on mode 2 oF F mode 3 in mode 4 out mode 5 modbuS mode 35h Yes 0 999 ton parameter in rELAy1 menu expressed in tenth of seconds or tenth of minutes depend on unit parameter 36h Yes 0 999 t OFF parameter in rELAy1 k menu expressed in tenth of seconds or tenth of minutes depend on unit parameter 37h Yes 0 1 unit parameter in rELAy1 menu 0 seconds 1 minutes 38h Yes 0 2 ALArmS parameter in rELAy1 menu 0 no changes 1 on 2 off 39h Yes u icc inti 0 999999 SEt P2 parameter in ELAy1 menu no decimal point included 3Ah Yes Parameters or relay R2 operation 40h Yes in D
13. clamping connections on the back of the unit s housing b Ls 5mm max 1 6 mm Figure 4 2 Recommended dimensions of cable stripping a for big connectors 1 to 6 b for small connectors 7 to 13 15 to 17 User manual RATEMETER STI NI18 Figure 4 3 Method of connecting cables to the clamping connectors A All connections must be made while power supply is disconnected R1 option Mem RS 485 pulse m A A NISTE eT JETI a z o E Uo 24V 5 10 Imax 100 mA on version Power supply depending Figure 4 4 Terminals description relay outputs User manual RATEMETER STI NI 18 10 OC1 OC2 Umax 30V DC Imax 30mA Pmax 100mW RS 485 puil eiihput option option A A DEEG 2 5 8 SERA 24V 5 10 Imax 100 mA Power supply depending on version Figure 4 5 Terminals description OC type outputs R1 Passive isolated option current output 4 20mA RS 485 p ls Ge option ZA erg BEZHIISTEIT CADAN gt z o RA 24V 5 10 Imax 100 mA Power supply depending on version Passive isolated RS 485 Petit currant output i 20m pulse input p EE 4 A DEER 2 o E due 24V 5 10 Imax 100 mA on version Power supply depending Figure 4 7 Terminals description OC type and current output User manual RATEMETER STI NI18 Depending on version 85 230 26
14. in alternating mode with parameter name by few seconds Confirmed changes may be checked or user can switch viewed parameter 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 SEtcod 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 nn 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 Error in other case AY Pay attention when device parameters are being changed If it is possible turn off controlled installation machine 20 User manual RATEMETER STI NI18 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 ifthe 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
15. revolution in such case one pulse goes out of the divider every revolution and it allows to minimize errors caused by roughness of measurement element e g rack if inductive detector is used The frequency after the divider is recalculated according to selected by user measurement unit parameter unit and can be expressed by rev sec rev min or rev h Final value is obtained by multiplication the measurement result by parameter mul and division by parameter div Parameters mul and div allow to free scaling of the measurement and obtain automatic recalculation of rotational speed to linear speed see example on page 33 Obtained result is displayed during measurement mode and is the base of relays and current output states calculation and is accessible via RS 485 interface with MODBUS protocol User manual RATEMETER STI NI18 If input frequency is in the permitted range but calculated value can not be fitted a on 6 digits message OvLd is displayed instead of the result modify parameters unit PrEc mul and div to fit the result on 6 digits While time per one revolution is displayed parameter F or P PEriod If input frequency equals 0 then message StoP is displayed f value of period is too high to be fitted on 6 digits message OvLd Overload is displayed instead of the result If input frequency is different than O but value of period is too small to be f
16. 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 1 If no peaks are detected while time timE elapses device starts to show the current value of input signal again 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 Displaying peak value is signalized by flashing most right decimal point The relays LEDs and the current output can be controlled depend on the current value of input signal or the peak value see HOLd menu 15 User manual RATEMETER STI NI18 A measure timE timE real measurement result time display value Figure 6 1 Process of peaks detection 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 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 SEt P SEt P2 HYSt modE ton t oFF unit and ALArmS Depend on modE parameter relays can be not used o
17. 0V AC DC 50 60 Hz or 19 24 50V DC and 16 24 35V AC Figure 4 8 Connection of power supply and relays 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 5W resistor connected in parallel to relay terminals or better directly on the load In consequence of using the suppression circuit the level of generated electromagnetic disturbances is lower and the life of relay contacts rises a b i Contacts of relay outputs are not equipped with spark suppressors While use N Figure 4 9 Examples of suppression circuit connection a to relay terminals b to the inductive load Construction of pulse input allows connecting of inductive or optical sensor with common earth 11 User manual RATEMETER STI NI 18 Figure 4 10a or common plus Figure 4 10b without additional intermediary circuits sensor with NPN or PNP type output a b PNP type NPN type sensor sensor Figure 4 10 An example of sensor connection a with common earth b with common plus Logic controller voltage input 24 V Uo current output Ej Isolation loss Figure 4 12 Example of current output connection using internal power supply 12 User manual RATEMETER STI NI18 current output
18. 33 us 33 66 50 000 not controlled not controlled Tab 7 1 Allowable settings of FrEq parameter and related with them minimum durations of logical states PULSen input divider can be set in range 1 to 19 999 This parameter defines the number of pulses per single revolution Value 0 is interpreted by firmware as 1 pulse rev a This parameter must be set correctly to let device works properly PrEc precision of result displaying There are available settings from 0 precision of 1 unit to 0 00000 precision with 5 digits after decimal point unit The unit of rotational speed used for recalculation of current measurement can be set to SEC result expressed in revolutions second min result expressed in revolutions minute hour result expressed in revolutions hour F or P kind of value shown on the display Freq frequency rotational speed PEriod period time per one revolution 25 User manual RATEMETER STI NI 18 mUL multiplication coefficient The value by which current measurement result is multiply to recalculate it to desired unit e g linear speed can be set in range O to 999 999 value 0 is interpreted as 1 000 000 div divide coefficient The value by which current measurement result is divided to recalculate it to desired unit e g linear speed can be set in range 0 to 999 999 value 0 is interpreted as 1 000 000
19. Assisting the automation rz simex industry since 1986 User manual RATEMETER STI N118 Firmware v 6 00 or higher Inputtype pulse e Rotational linear speed control 3 ENTER RESET 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 2013 10 15 STI N118_INSSXEN_v 2 05 003 User manual RATEMETER STI NI 18 CONTENTS 1 BASIC REQUIREMENTS AND USER SAFETY lees eseies esse sensn inan sana e anna asas nana asap asas ENEE 3 2 GENERAE CHARACTERISTIGS titer seats Eye EE NEGA KRANJA FE EY RU EEN Re 4 SSTECHNIGCAE DATA EE 4 4 DEVICE INSTALLATION 6 LA BEU STO DICEREM 6 42 ASSEMBLY iue vois oia pita nion Hen ageret e disco aaa ERR RENS 6 4 3 CONNECTION METHODEN 7 4 4 MAINTENANCE 5 FRONT PANEL DESCRIPTION EE 6 PRINCIPLE OF OPERATION iini setas esitare sananya CERE an EF vda ER SER ani SAP Rb aD SFRKPARRPKRRAPSRIAIR 61 MEASUREMENT MODE 1 dee avo RS ee eege 14 6 2 DETECTION OF THE PEAK VALUES zB 6 3 CONTROL OF THE RELAY OUTPUTS BEI 6 3 1 One threshold ie EE 1z 6 3 2 Two thresholds mode nana nana nana 19 7 DEVICE PROGRAMMING 0 7 1 PROGRAMMING MENU 7 2 PARAMETERS EDITION 7 2 1 Numeric parameters digit change model 7 2 2 Numeric parameters slide change mode Por 7 2 3 Switch parameters
20. LIST type M 7 3 MENU DESCRIPTION 7 3 1 rELAy1 menu i22 7 3 2 inPUt menu 24 73 39 EE DEE 26 7 3 4 OUIBU ME U lih 26 7 3 5 briGHt parameter 28 7 3 6 HOLd menu 4428 7 3 7 SECO I mM 28 JEEP MIT 29 7 3 9 Edit t parameter 30 7 3 10 dEFS parameter 22 30 EE 30 7 4 Reg RE 31 8 EXAMPLES OF MUL AND DIV PARAMETERS CALCULATION 33 9 CURRENT OUTPUT VALUE CALCULATION eene 134 10 THE MODBUS PROTOCOL HANDLING 1 34 10 1 LIST OF REGISTERS sss Een 10 2 TRANSMISSION ERRORS DESCRIPTION 10 3 EXAMPLES OF QUERY ANSWER FRAMES 38 11 DEFAULT AND USER S SETTINGS LIST sees sisse esent tna nena ennenne sna ananasa asan nana 41 User manual RATEMETER STI NI18 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 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 A The manufacturer is not responsible fo
21. allation fuse Wiring must meet appropriate standards and local regulations and laws In order to secure against accidental short circuit the connection cables must be terminated with appropriate insulated cable tips Tighten the clamping screws The recommended tightening torque is 0 5 Nm Loose screws can cause fire or defective operation Over tightening can lead to damaging the connections inside the units and breaking the thread In the case of the unit being fitted with separable clamps they should be inserted into appropriate connectors in the unit even if they are not used for any connections Unused clamps marked as n c must not be used for connecting any connecting cables e g as bridges because this can cause damage to the equipment or electric shock User manual RATEMETER STI NI 18 MN If the unit is equipped with housing covers and sealing packing protecting against water intrusion pay special attention to their correct tightening or clamping In the case of any doubt consider using additional preventive measures covers roofing seals etc Carelessly executed assembly can increase the risk of electric shock After the installation is completed do not touch the unit s connections when it is switched on because it carries the risk of electrical shock Due to possible significant interference in industrial installations appropriate measures assuring correct operation of the unit must be a
22. ameter zone B I I JE ime b relay state Hi modE in G i ton 0 1 r t oFF 0 7 time c relay state modE out ton 0 toFF 0 time relay state d modE in ton gt 0 toFF gt 0 E vt bs de time e relay state ton parameter toFF parameter ton parameter i modE out jj pod f d closed pi bd open I ton gt 0 NE l H m l t oFF gt 0 E gt Leen E yr time s v a i t oFF parameter t on parameter t oFF parameter Description A B C D E points where measured signal exceeds border values expected value allowed deviation Bon Borr Con Corr Eon Eorr relays state changes moments for ton gt 0 t oFF gt 0 ta tg tc to te time periods while input signal is in zone A or zone B Figure 6 5 Principle of LED relay output operation for two thresholds mode Figure 6 5 presents the principle of relay outputs operation for two thresholds mode and an example values of other parameters In this mode parameter SEt P2 is accessible in common with SEt P2 this parameter describes a second threshold of the relay output The parameters HYSt modE t on t oFF unit and ALArmS are connected with both SEt P and SEt P2 thresholds While the controlling process the relay output changes his state depends of both SEt P and SEt P2 thresholds in similar way as it was described in one threshold mode
23. d value press or press and hold button only the increasing became quickest as long as button is pressed To slow down the increasing button v can be used If v is pressed shortly and button is still pressed increasing slow down for a moment only if v 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 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 21 User manual RATEMETER STI NI 18 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 Sh
24. e 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 SEt P HYSt SEt P2 HYSt SEt P HYSt or SEt P2 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 noACt the relay is not active permanent turned off on one threshold mode the relay is turned ON when input signal exceeds SEt P HYSt value and is turned off back when the input signal became lower than SEt P HYSt OFF one threshold mode the relay is turned OFF when input signal exceeds SEt P HYSt value and is turned on back when the input signal became lower than SEt P 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 SEt P and SEt P2 thresholds the lower threshold means lower one of SEt P and SEt P2 thresholds Out two threshold mode relay is turned OFF when the input value is bigger than bigger threshold HYSt and l
25. emory Protection level Housing type Housing material Housing dimensions without glands with glands Operating temperature Storage temperature Humidity Altitude Screws tightening max torque Max connection leads cross section Safety requirements OV 1V 10V 30V about 12 mA 24V 0 999999 plus decimal point 0 0296 full temperature range Selected from range 0 0 00000 rev min rev sec or rev hour settable from 0 1 to 39 9 sec 0 1 or 2 NO 1A 250V AC cos g 1 0 1 or 2 30mA 30VDC 100mW 0 or 1 range max 2 8 24mA supply voltage Us 9 5 36V load resistance 0 Us 9 5V 24mA kQ resolution 12bits isolation strength 560V DC 24V 5 10 max 100 mA stabilized RS 485 8N1 and 8N2 Modbus RTU not separated 1200 bit s 115200 bit s LED 6 digit 13mm height red non volatile memory EEPROM type IP 65 wall mounted ABS fibreglass 110 x 80 x 67 mm 110 x 105 x 67 mm 0 C do 50 C or 20 C to 50 C 10 C do 70 C or 20 C to 70 C 5 to 90 no condensation up to 2000 meters above sea level 0 5 Nm 3 mm for connectors 1 6 or 2 mm for connectors 7 13 15 17 according to PN EN 61010 1 installation category Il pollution degree 2 voltage in relation to ground 300V AC User manual RATEMETER STI NI 18 insulation resistance gt 20MQ insulation strength between power supply and input output terminal 1min 2300V ins
26. er supply prior to starting assembly Check the connections are wired correctly prior to switching the unit on dimensions of the device and distances between holes The back side of the device has four mounting holes This part of the case should be mounted to a wall by Screws i To install device on the wall a pinholes should be made Figure 4 1 presents User manual RATEMETER STI NI18 110 mm 67 mm 90 mm E Gu 80 mm 60 mm k oh ey a 5 CG Figure 4 1 Device and assembly dimensions 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 Because of this an external time delay cut out fuse with minimal possible nominal current value must be used recommended bipolar max 2A and a power supply circuit breaker located near the unit In the case of using a monopolar fuse it must be mounted on the phase cable L The power supply network cable diameter must be selected in such a way that in the case of a short circuit of the cable from the side of the unit the cable shall be protected against destruction with an electrical inst
27. f the border values see points A and C Figure 6 4 a b c If values of ton or and t OFF 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 4 a d e Similarly the relay will be turned off if time t OFF elapse since the input signal value exceeds any of the border values see points Borr Dorr Figure 6 4 a d e If tA tB IC or tD when input signal stay in zone A or zone B are lower than parameters t on or t OFF the relay will not change his state see points A and C Figure 6 4 a d e The state of relay output while the input value exceeds the border values points A B C D is described by parameter modE The relay can be turned on modE on or turned off modE oFF when input signal value is contained in zone A Figure 6 4 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 rELAy1 menu 18 User manual RATEMETER STI NI18 6 3 2 Two thresholds mode displayed value SEt P or SEt P2 SEt2 on Parameter Type ch a Sa ae puce Dx MM EE i HYSt par
28. formula from page 27 lout 30 0 10 0 20 0 10 0 x 16 mA 4 mA 2 16 4 36 mA Calculated Lu exceeds the output working range 3 8 21 mA so current output will generate current equal to the upper border of range defined by parameter Lo r i Hi r it means 21 mA 10 THE MODBUS PROTOCOL HANDLING Transmission parameters 1 start bit 8 data bits 1 or 2 stop bit 2 bits are send 1 and 2 bits are accepted when receive no parity control 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 does not exceed 16 registers for single frame Gi The device interprets the broadcast messages but then do not sends the answers 34 User manual RATEMETER STI NI18 10 1 LIST OF REGISTERS Some parameters are located on two registers higher word in first register and lower word in next one After writing of one of them device controls result of their 32 bit value and if it is necessary corrects value of second register automatically If appropriate modification is impossible both re
29. gisters see TRANSMISSION ERRORS DESCRIPTION stay unaffected and device responds with error code 03h Register Write Range Register description 1 ek No 0 999999 Measurement value no decimal point The status of the current measurement 0 data valid 03h No 0 FFh 20h device waits for first pulse A0h alarm state allowable frequency range is exceeded 04h Yes 0 5 PrEc parameter in inPUt menu The same as 12h register State of the relays and alarm LED binary format 1 on 0 off 00000000 000e00ba 05h Yes 0731 a relay R1 b relay R2 e alarm state indicator If written only a b bits are important others are ignored these bits allows user to control the relays via RS 485 interface State of current output expressed in 1 256 mA units it means that 06h Yes 0h 1800h high byte express integer part and low byte fractional part of desired output current 07h N e 08h o 0 999999 Peak drop value no decimal point FrEq parameter in inPUt menu input filter 10h Yes 0 7 11 0 10Hz 1 15Hz 2 20Hz 3 30Hz 4 40Hz 5 50Hz 6 100Hz 7 300Hz 8 1kHz 9 3kHz 10 10kHz 11 50kHz 11h Yes 0 19999 PULSEn parameter in inPUt menu Value 0 is interpreted as 1 a PrEc parameter in inPUt menu 12i Yes 025 0 0 1 0 0 2 0 00 3 0 000 4 0 0000 5
30. inti 41h Yes 0 999999 SEt P parameter in rELAy2 menu no decimal point included pn eg 0 99999 HySt parameter in ELAy2 menu no decimal point included 36 User manual RATEMETER STI NI18 Register Write Range Register description modE parameter in rELAy2 menu 44h Yes 0 5 0 noACt mode 1 on mode 2 oF F mode 3 in mode 4 out mode 5 modbuS mode 45h Yes 0 999 t on parameter in rELAy2 menu expressed in tenth of seconds or tenth of minutes depend on unit parameter 46h Yes 0 999 St OFF parameter in rELAy2 menu expressed in tenth of seconds or tenth of minutes depend on unit parameter 47h Yes 0 1 unit parameter in rELAy2 menu 0 seconds 1 minutes 48h Yes 0 2 ALArmS parameter in rELAy2 menu 0 no changes 1 on 2 off 49h Yes m D inti 0 999999 SEt P2 parameter in rELAy2 menu no decimal point included 4Ah Yes 70h Yes 0 1 modE parameter in HOLd menu type of detected changes 0 peaks 1 drops 71h Yes 0 999999 PEA parameter in HOLd menu minimum detectable change no decimal point included 72h Yes 0 199 timE parameter in HOLd menu maximum peaks or drops display time expressed in seconds HdiS parameter in HOLd menu the type of values displayed on 73h Yes 0 1 the display 0 current measurement va
31. ion interface and sensor supply output The meter can be ordered in two power supply versions The device has 5 buttons being used for main presets programming To get high protection level the keyboard is mounted under transparent cover To allow user to change presets without opening the cover an IR sensor is mounted Remote controller contains basic functions to handle menu of the device Note that remote controller is not a part of the STI N118 set it is an additional equipment Additional features settable width of measurement window from 0 1 to 39 9 seconds possible direct access to relays thresholds values additional multiply and division coefficients for result scaling 3 TECHNICAL DATA Power supply voltage 85 230 260V AC DC 50 60 Hz separated depending on version or 19 24 50V DC and 16 24 35V AC separated External fuse required T type max 2A Power consumption max 4 5 VA 85 260V AC DC max 4 5 VA 16V 35V AC max 4 5 W 19V 50V DC Pulse input fully Isolated with denouncing filter and pulse width control max input frequency 50 0 kHz User manual RATEMETER STI NI18 Input levels low level high level Display range Frequency measurement accuracy Rotational speed precision Rotational speed unit Time between following pulses Outputs relay OC type passive isolated current sensor power supply Uo Communication interface Baud rate Display Data m
32. itted on 6 digits message UnLd Underload is displayed instead of the result In the measurement mode user can check main thresholds values After pressing or v button name of the threshold e g rELPr1 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 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 a Configuration of the device via menu or RS 485 interface does not stop measures 6 2 DETECTION OF THE PEAK VALUES The STI N118 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
33. lculated output value Lu exceeds defined range then current output generates the current equal to upper or lower border of the defined range The parameters define the percentage extension of nominal current range 4 20 mA with 0 196 resolution Parameter Lo r defines lower border of the range due to formula Imin 54 MA 4 mA x Lo r 96 This parameter can be set from 0 to 29 9 Parameter Hi r defines lower border of the range due to formula Imax 20 mA 20 mA x Hi r This parameter can be set from 0 to 19 9 In example on page 34 the procedure of the current outputs determining is presented in details AL this parameter determines the behaviour of current output if any critical situation occurs The parameter can be set to one of the values noCHAn current will not change 22 1 current will be set to 22 1 mA 3 4 current will be set to 3 4 mA When the critical situation goes the current will be set to value calculated due to formulas given above If parameter OUtmod is set to 4 20 the critical situation means that permissible measurement range is exceeded 27 User manual RATEMETER STI NI 18 If parameter OUtmod is set to modbuS the critical situation means communication delay when no data is received longer than mbtimE parameter see description rS 485 menu Before turning off the device it is recommended to first disable the current ou
34. lue 1 peaks or drops values H r1 parameter in HOLd menu the control mode of relay R1 and 74h Yes jeg LEDR1 0 control depends on current measurement values 1 control depends on peaks or drops values H r2 parameter in HOLd menu the control mode of relay R2 and 75h Yes pup LED R2 0 control depends on current measurement values 1 control depends on peaks or drops values 2 E HOut parameter in HOLd menu DS Sp 0 1 0 rEAL mode 1 HOLd mode 88h Yes 0 1 F or P parameter in inPUt menu kind of value visible on the display 0 frequency 1 period OUtmod parameter in OUtPUt menu current output mode AO Yes 0 2 0 current output disabled 1 current output enabled with 4 20mA mode 2 current output controlled via RS 485 interface 2 In f D i Yes 0 999999 OU LO parameter in OUtPUt menu no decimal point included 37 User manual RATEMETER STI NI 18 Register Write Range Register description 2 D H D pd Yes 0 999999 OUt HI parameter in OUtPUt menu no decimal point included Abh Yes 0 499 Lo r parameter in DUtPUt menu expressed in 0 1 A6h Yes Uz 99 Hi r parameter in DUtPUt menu expressed in 0 1 AL parameter in OUtPUt menu current output value on critical 2 ALN e pue exception 0 no change 1 22 1 mA 2 3 4 mA 1 itis recommended to read these registers sim
35. nd Lo byte CRC L H CRC error check Hi and Lo byte 1 Read of the displayed value measurement and status the device address 01h ADDR FUNC REGH L COUNT H L CRC L H 01 03 00 01 00 03 54 OB The answer 38 User manual RATEMETER STI NI18 ADDR FUNC BYTEC DATA H1 L1 DATA H2 L2 DATA H3 L3 CRC LH 01 03 06 00 01 86 A0 00 00 2A B4 DATA H1 L1 reg 01h 1 high word of measurement value DATA H2 L2 reg 02h 86A0h low word of measurement value DATA H3 L3 reg 03h 0 measurement status In this example measurement value is equal 186A0h 100 000 in decimal format GD Decimal point position is not included in measurement value reg 01h and 02h Decimal point position can be read from reg 04h PrEc parameter 2 Read of device ID code ADDR FUNC REG HI COUNT HL CRC LH 01 03 00 21 00 01 D4 00 The answer ADDR FUNC BYTEC DATA H L CRC LH 01 03 02 20 5C A1 BD DATA identification code 205Ch 3 Change of the device address from 1 to 2 write to reg 20h ADDR FUNC REGH L DATA H L CRC L H 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 REGH L DATA H L CRC L H 01 06 00 20 00 02 09 C1
36. nominal output range 5 0 96 27 AL Current output value on critical exception 22 1 mA 27 Display parameters briGHt Display brightness bri6 28 Configuration of peaks detection function HOLd menu modE Kind of detected changes norm 28 PEA Minimum detected change 0 0 28 timE Maximum time of peak displaying 0 0 sec 28 H diS The type of displayed value IEAL 28 Hr Source of relay R1 and LED R1 control IEAL 28 Hr2 Source of relay R2 and LED R2 control IEAL 28 HOut Source of current output control rEAL 28 Settings of access to the configuration parameters SECU menu Acc r1 Permission to changes of relay R1 threshold en 29 without of the user password knowledge Acc r2 Permission to changes of relay R2 threshold o 29 without of the user password knowledge RS 485 interface configuration menu rS 485 Addr Device address 0 29 bAud Baud rate 9600 b sec 29 mbAccE Permission to changes of configuration registers On 29 mbtimE Maximum delay between received messages 0 29 rESP Additional delay of answer transmission Std 29 Configuration of numerical parameters edition Edit t Numerical parameters edit mode dig 30 42 User manual RATEMETER STI NI18 43 fj simex SIMEX Sp z o o ul Wielopole 7 80 556 Gda sk Poland tel 48 58 762 07 77 fax 48 58 762 07 70 http www simex pl e mail infoQsimex pl
37. now how much time is reguired for backing a bun at current speed of production line While backing the bun is moving on the production line through the oven Input data number of pulses per 1 meter 10 pulses the way of bread while backing 12 33m User have to set following parameters inPUt gt F or P PEriod e inPUt gt PULSen 10 pulses inPUt gt div 37 because we want to N 12 33 be an integer value inPUt gt mUL N Since now the time required for backing a bun at current speed of production line is shown on the display in units selected by inPUt gt unit parameter 33 User manual RATEMETER STI NI 18 9 CURRENT OUTPUT VALUE CALCULATION Let the current output parameters be OUtmod 4 20 OUt LO 100 OUt HI lt 200 Lor lt 5 0 Hi r lt 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 27 lout 17 5 10 0 20 0 10 0 x 16 mA 4 mA 0 75 16 4 16 mA Calculated la does not exceed the output working range 3 8 21 mA b D 20 5 According to formula from page 27 lout 20 5 10 0 20 0 10 0 x 16 mA 4 mA 1 05 16 4 20 08 mA Calculated la does not exceed the output working range 3 8 21 mA c D 30 0 According to
38. of relay R2 operation rELAy2 menu SEtP Relay first threshold 40 0 23 SEt P2 Relay second threshold 50 0 23 HYSt Hysteresis of relay 0 0 23 modE Operation mode of relay jin 23 ton Turn on delay of relay 0 0 sec 24 toFF Turn off delay of relay 0 0 sec 24 unit Unit of t on toFF parameters of relay SEC 24 ALArmS Reaction for critical situation of relay oFF 24 Configuration of measurement input inPUt menu FrEq Maximum permitted frequency 300 Hz 24 PULSEn Input pulse divider 1 25 PrEc Measurement result displaying precision 0 0 25 unit Rotational speed unit min 25 ForP Kind of value visible on the display FrEg 25 mUL multiplier 1 26 div divider 1 26 ZEro t Maximum delay between successive revolutions 1 0 sec 26 mEASt Measurement window width 0 5 sec 26 Configuration of displayed value filtering FiLtEr menu vALUE Filtering ratio 0 26 droP Measurement value change switching off the filter 20 0 96 26 Current output configuration OUtPUt menu 41 User manual RATEMETER STI N118 Parameter Description Default value User s value pend Outmod Current output mode 4 20 mA 26 OUt Lo Display value for 4 mA current output 0 0 27 OUt Hi Display value for 20 mA current output 100 0 27 Lor Extension of the bottom of the nominal output 5 0 27 range Hir Extension of the top of the
39. on Value of this parameter can be changed in range 0 199 9 Main purpose of this parameter is acceleration of displaying data changes when sudden changes of instantaneous measurements value occur while parameter vALUE is set to high values 7 3 4 OutPUt menu This menu contains parameters of current output control Menu is available if the device is equipped with current output Current output can be controlled depend on both present measured value and peak value if peak detection is enabled OUtmod current output mode can be set to values 26 User manual RATEMETER STI NI18 oFF current output disabled the idle current ca 2 5 mA is generated 4 20 current output enabled with 4 20 mA mode modbusS current output controlled via RS 485 interface OUt LO this parameter determines the input value for which the output current is equal 4mA OUt HI this parameter determines the input value for which the output current is equal 20mA The output current value is calculated due to formula given below y W OUt LO OUt HI OUt LO X l6mA 4 mA for output range 4 20mA where W denotes the displayed value Out LO parameter can be greater than Out HO In this case the conversion characteristic is reversed it means that if input value raises the output current falls Lo r Hir this parameters define the output current range maximum range 2 8 to 24 mA If ca
40. ort pressing of ENTER causes in displaying of the acknowledge question SEt If key ENTER is pressed again the changes are accepted stored in EEPROM end the edition process finished Pressing the key ESC after SEt causes in cancelling of made changes and returning to menu Functions of buttons when editing numeric and switching parameters While editing numeric parameter 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 ENTER 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 tc 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 E
41. ower than lower threshold HYSt and turned on when the input signal is contained in the second zone The bigger threshold means bigger one of SEt P and SEt P2 thresholds the lower threshold means lower one of SEt P and SEt P2 thresholds modbuS the relay is controlled via RS 485 interface independently on the input signal 23 User manual RATEMETER STI NI 18 d t on t OFF unit 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 O 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 t oFF if the input value exceeds appropriate border value defined with threshold and hysteresis at least t OFF time t OFF 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 t oFF time the relay do not change his state see paragraph CONTROL OF THE RELAY OUTPUTS unit of time for t on and t oFF parameters Can be set on one of two values
42. pplied To avoid the unit of improper indications keep recommendations listed below Avoid common parallel leading of signal cables and transmission cables together with power supply cables and cables controlling induction loads e g contactors Such cables should cross at a right angle Contactor coils and induction loads should be equipped with anti interference protection systems e g RC type Use of screened signal cables is recommended Signal cable screens should be connected to the earthing only at one of the ends of the screened cable In the case of magnetically induced interference the use of twisted couples of signal cables so called spirals is recommended The spiral best if shielded must be used with RS 485 serial transmission connections In the case of 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 anti interference filters is recommended Bear in mind that the connection between the filter and the unit should be as short as possible and the metal housing of the filter must be connected to the earthing with largest possible surface The cables connected to the filter output must not run in parallel with cables with interference e g circuits controlling relays or contactors Connections of power supply voltage and measurement signals are executed using the
43. r 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 equipment 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
44. r controlled over one or two thresholds values If one threshold is used Figure 6 2 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 3 the relay will be turned on when value of input signal is contained in zone A modE in or zone B modE out and turned off if the signal is contained in the second one state of relay LED SEt P parameter measure a HYSt parameter Figure 6 2 One threshold control of the relay LED outputs 16 User manual RATEMETER STI NI18 state of relay LED xU LI measure HYSt parameter Figure 6 3 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 6 3 1 One threshold mode Figure 6 4 presents the principle of relay outputs operation for one threshold mode and an example values of other parameters measured displayed value A t t t signal D SEt P parameter oe RE E re expected signal value a zone A ii bd HYSt parameter zone B allowed signal bog I I deviation 1 is H T 1 ON 1 1 d 1 roo 1 1 1 gt b relay state a BR E PASE ume modE on bg oo bg bora g ton 0 1 1 closed bord a I NSE toFF 0 pii l open dag
45. rate It can be set to one of 8 possible values 1200 2400 4800 9600 19200 38400 57600 115200 mbAccE 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 The access to registers no 04h i 05h cant be denied by mbAccE parameter see aD LIST OF REGISTERS mbtimE this parameter defines maximal time sec between following frames received by the device If the delay will be greater than the value of mbtimE parameter the relays and the current output which are controlled via RS 485 interface will set to alert state see OUtPUt menu and rELAy1 menu description Parameter mbtimE 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 29 User manual RATEMETER STI NI 18 Std answer as quick as possible no additional delay Et 10c S 2 answer delayed of 10 20 50 100 of 200 chars respectively where
46. repairs at an authorized service centre AY 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 User manual RATEMETER STI NI 18 A 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 main purpose of STI N118 tachometer is measuring of the rotational speed in range 1 5 to 50 000 r min The device can be used as frequency meter as well Main feature of the tachometer is high precision of measurement 0 0296 in full temperature range User can set input divider in range 1 to 19 999 and additional scale coefficients The device can be equipped with two relay outputs two OC type outputs one relay and one passive isolated current output or one OC type and one passive isolated current output These outputs can be controlled depend on momentary value of rotational speed Device STI N118 is equipped with RS 485 Modbus RTU communicat
47. rmeer E ars edition r SG ES Acc ri II H i Accr2 Ii E s a Add G Parameter I rS 485 Z i r edition 7 bAud i H J mbAccE I t mbtimE i Im Ed Z Parameter t z edition rESP 4 digit special password entering E SE D do amp SEt Es Default settings i ej restoring Y SErv User manual RATEMETER STI NI18 8 EXAMPLES OF MUL AND DIV PARAMETERS CALCULATION 1 Let s assume that user wants to multiply rotational speed by 12 34 Then parameters mUL and div should be set mUL 1234 div 100 2 Let s assume that user wants to divide rotational speed by 5 678 Then parameters mUL and div should be set mUL 1000 div 5678 3 Let s assume that user wants to display linear speed of moved material Measurement wheel radius is 5 cm To determine parameters mUL and div a circumference of measurement wheel must be calculated it means linear distance eguals to single revolution circumference 2 x 3 14 x 5 cm 31 40 cm 0 314 m To obtain linear speed multiply rotational speed by determined coefficient mUL 314 div 1000 After storing these parameters device displays linear speed of material movement expressed in m s m min or m h depend on unit parameter with precision selected by PrEc parameter 4 Let s assume that user wants to k
48. rror and unit returns to measurement mode Due to problem with direct displaying of m letter it is exchanged with special sign aD pn Independently in user manual letter m is used to make it more readable example modE 7 3 1 rELAy1 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 rELAy2 for relay LED R2 Principle of the relays operation is described in paragraph CONTROL OF THE RELAY OUTPUTS 22 User manual RATEMETER STI NI18 SEt P SEt P2 HYSt d modE 8 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 0 999999 Threshold is the medium value of relay hysteresis second threshold of the relay range 0 999999 This threshold is accessible when modE parameter is set to in or out value Threshold is the medium value of relay hysteresis hysteresis of relay range 0 99999 Full hysteresis of the relay is equal to 2x HYSt parameter Th
49. tput s aD power supply and then the device itself If the current output is supplied while the device itself is turned off the output current will be about 27 5 mA 7 3 5 briGHt 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 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 1 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 HdiS type of displayed values rEAL current value is displayed HOLd peak drop value is displayed H r1 H r2 relay LED outputs R1 R2 operation mode rEAL relaylLED operates depend on the current value HOLd relay LED operates depend on the peak drop val
50. ue HOUt current output operation mode rEAL current output operates depend on the current value HOLd current output operates depend on the peak drop value 7 3 7 SECU menu This menu contains presets connected with availability of other parameters SEtcod user password 4 digits number If this parameter is set at value 0000 user password is turned off 28 User manual RATEMETER STI NI18 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 aD 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 Acc r1 Acc r2 this option permits user on or prohibits oFF to modify the thresholds of the relays LEDs R1 R2 without knowledge about user password 7 3 8 rS 485 menu This menu is connected with RS 485 interface and sets his properties Addr this parameter defines the address of the device accordingly to Modbus protocol It can be set in range from O to 199 If the value O is set then device responds to frames with address 255 FFh bAud this parameter determines RS 485 interface baud
51. ulation strength between relays terminal 1min Q 1350V EMC according to PN EN 61326 1 This is a class A unit In housing or a similar area it can cause radio frequency interference In such cases the user can be requested to use appropriate preventive measures 4 DEVICE INSTALLATION The unit has been designed and manufactured in a way assuring a high level of user safety and resistance to interference occurring in a typical industrial environment In order to take full advantage of these characteristics installation of the unit must be conducted correctly and according to the local regulations A Read the basic safety requirements on page 3 prior to starting the installation Ensure that the power supply network voltage corresponds to the nominal voltage stated on the unit s identification label The load must correspond to the requirements listed in the technical data All installation works must be conducted with a disconnected power supply Protecting the power supply clamps against unauthorized persons must be taken into consideration 4 1 UNPACKING After removing the unit from the protective packaging check for transportation damage Any transportation damage must be immediately reported to the carrier Also write down the unit serial number on the housing and report the damage to the manufacturer Attached with the unit please find user s manual warranty 4 2 ASSEMBLY Disconnect the pow
52. ultaneously in 2 registers frames If single registers are read data errors are possible because of changes of read value between successive registers readings these registers are active only if device is equipped with current output after writing to register no 20h the device responds witch an old address in the message after writing to register no 22h the device responds with the new baud rate the value of the mbAccE parameter is also connected to write to this register so it is possible to block a writes but impossible to unblock writes via RS 485 interface The unblocking of the writes is possible from menu level only MW ON 10 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 5 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 mbAccE parameter 10 3 EXAMPLES OF QUERY ANSWER FRAMES Examples apply for device with address 1 All values are represent hexadecimal Field description ADDR Device address on modbus network FUNC Function code REG HL Starting address address of first register to read write Hi and Lo byte COUNTH L No of registers to read write Hi and Lo byte BYTEC Data byte count in answer frame DATA HL Data byte Hi a

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