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User Manual - Metrix Electronics Ltd

1. HYSt e d OFFS SEnS e t on toFF unit 36 threshold is accessible when modE parameter is set to in or out value Threshold is the medium value of relay hysteresis hysteresis of relay range 0 999 Full hysteresis of the relay is equal to 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 HYSt or SEt2 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 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 this parameter specifies the difference between the setpoint value to the controller and the signal measured by the device which will cause an output response to that signal this parameter specifies what percentage of the controller s output status must be achieved in order for the output to react to the status of the controller In a situation where the parameters OFFS and SEnS are other than zero the controller only responds to the signal when the conditions desc
2. User manual CONTROLLER PUR 94 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 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 users manual warranty assembly brackets 2 pieces 4 2 ASSEMBLY AN 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 t
3. 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 1 W OUtL Qut TOU OUL X B 4 A 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 Hir 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 1 resolution Parameter Lo r defines lower border of t
4. 63 User manual CONTROLLER PUR 94 Register Write Range Register description a Re er A e 5Dh Yes 022 NURSE only when rEL3 is relay output 0 5Eh Yes 999 9999 SEt2 parameter in rEL3 menu no decimal point included 5Fh Yes 999 9999 InLo parameter in rEL3 menu no decimal point included 60h Yes 999 9999 InHi parameter in rEL3 menu no decimal point included 61h Yes 0 9999 PEri parameter in rEL3 menu no decimal point included 62h Yes 079999 H on parameter in rEL3 menu no decimal point included 63h Yes 0 9999 HoFF parameter in rEL3 menu no decimal point included 64h Yes 0 1 o ru aaa d rEL3 is OC type output 65h Yes 0 1000 duty parameter in AL menu only when rEL3 is OC type output 66h Yes 0 1000 _ the decimal point only where FEL3 isthe OC ype output o 67h Yes 999 9999 OFFS parameter in rEL3 menu no decimal point included 68h Yes 0 1000 SEnS parameter in rEL3 menu no decimal point included Sour parameter in rEL4 menu 8h xem 0 3 0 InPU option 1 modb option 2 PidH option 3 PidC option modE parameter in rEL4 menu 6Ah Yes 0 5 0 noAC mode 1 on mode 2 oF F mode 3 in mode 4 out mode 5 PULS mode 6Bh Yes 999 9999 S
5. 80h Yes 021 modE parameter in HOLd menu type of detected changes 0 peaks 1 drops 81h Yes 0 9999 PEA parameter in HOLd menu minimum detectable change no decimal point included 82h Yes 0 199 timE parameter in HOLd menu maximum peaks or drops display time expressed in seconds HdiS parameter in HOLd menu E AC 0 1 Q0 rEAL mode 1 HOLd mode R H r1 parameter in HOLd menu W Yes 0 1 g rEAL mode 1 HOLd mode B H r2 parameter in HOLd menu en 0 1 0 rEAL mode 1 HOLd mode H r3 parameter in HOLd menu w pres 0 1 0 rEAL mode 1 HOLd mode H r4 parameter in HOLd menu M 0 1 Q0 rEAL mode 1 HOLd mode A HOUt parameter in HOLd menu EA R 0 1 0 rEAL mode 1 HOLd mode Ah Yes 999 1999 The value of X coordinate of point no 1 of the user defined characteristic expressed in 0 196 A1h5 Yes 999 9999 The value of Y coordinate of point no 1 of the user defined characteristic no decimal point included A2h C5h5 Further pairs of X Y coordinates of points no 2 19 of the user defined characteristic C6h5 Yes 999 1999 The value of X coordinate of point no 20 of the user defined characteristic expressed in 0 1 C7h5 Yes 999 9999 The value of S coordinate of point no 20 of the user defined characteristic no decimal point included OSou parameter in OutP menu
6. DOh Tak 0 3 0 InPU option 1 modb option 2 PidH option 3 PidC option 65 User manual CONTROLLER PUR 94 Register Write Range Register description Omod parameter in OUtP menu active current output mode Yes 0 3 0 current output disabled 1 current output enabled with 4 20mA mode 2 current output enabled with 0 20mA mode Omod parameter in OUtP menu passive current output mode Yes 0 2 0 current output disabled 1 current output enabled with 4 20mA D1h mode 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 D2h Yes 999 9999 OUtL parameter in OUtP menu no decimal point included D3h Yes 999 9999 OUtH parameter in OUtP menu no decimal point included i Lo r parameter in OUtP menu for active current output and Yes 0 999 e Bini active voltage output expressed in 0 196 z Lo r parameter in OUtP menu for passive current output YES iius expressed in 0 196 Yes 0 199 Hi r parameter n M menu for active and passive current output expressed in 0 1 ER H OUtP f R Hi r parameter in menu for active voltage ou
7. as a percentage that is to be forced on the output at the time of an alarm regardless of the state of the source value 31 User manual CONTROLLER PUR 94 Minimal Output D 50 on and off plato 4 time gt Time s PEri 200 Figure 6 14 An example of the progress of an OC type PWM output signal in PULS mode 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 If particular parameter has been changed and confirmed in quick view mode its Gi new value is displayed in alternating mode with parameter name by few seconds Confirmed changes may be checked or user can switch viewed parameter pressing 4 or v button 7 1 PROGRAMMING MENU To enter main menu being
8. modE in E MEME Ir pi ny LG ton 0 closed ioi i I id toFF 0 L fon EX H ER i RB J bd BEEN time c relay state 4 m WE a E modE out I GC ton 0 toFF 0 em relay state 4 5d bod I E T bord d mek n P 1 IRE ton gt 0 I i closed po I I toFF gt 0 i E met KASKA ve tein ame e relay state 4 t on parameter G toFF parameter t on parameter modE out bd paf i closed i a ton gt 0 pn Fi toFF gt 0 i Y Ld I vt i E wr 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 ts te to te time periods while input signal is in zone A or zone B Figure 6 12 Principle of LED relay output operation for two thresholds mode 29 User manual CONTROLLER PUR 94 Figure 6 12 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 cont
9. 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 thresholds 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 lower threshold means lower one of SEtP and SEt2 thresholds PULS available only for OC type output Turns on PWM mode for OC type output first threshold of the relay range 999 9999 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 999 9999 Negative values can be input by selecting a sign on first digit to change value use and v buttons This 35 User manual CONTROLLER PUR 94
10. PH Y PL W 1 x X PH x PL 100 Y PL 8 80 30 T 0 375 0 3 x 40 30 100 302 67 b lin 2 5 mA and I 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 lin 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 l 0 9 for these values the displayed value W 795 Example 7 Current output value calculation Lets assume that we have active current output and its parameters are modE 4 20 OUtL 100 OUtH 2 200 Lor 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 42 lout 17 5 10 0 20 0 10 0 x 16 mA 4 mA 0 75 16 4 16 mA 58 User manual CONTROLLER PUR 94 Calculated l do not exceeds the output working range 3 8 21 mA b D 20 5 According to formula from page 42 lout 20 5 10 0 20 0 10 0 x 16 mA 4 mA 1 05 16 4 20 08 mA Calculated Lu do not exceeds the output working range 3 8 21 mA c D 30 0 According to formula from page
11. around the setpoint is a natural behaviour Auto tuning If the user does not know the dynamic parameters of the controlled system and is unable to select the suitable controller coefficients or simply doesn t have the time or patience the controller auto tuning system included in the device can be used instead Thanks to auto tuning the controlled system is identified and controller settings are selected using the Ziegler Nichols method which involves measuring the set oscillation parameters of the system The auto tuning process is divided into three phases during which no device settings can be changed and after their completion the device automatically switches to operation in the Pid mode The duration of the auto tuning process depends on the properties of the controlled system processes because auto tuning may damage the products manufactured in the During auto tuning the user is warned against regulating the actual technological process 25 User manual CONTROLLER PUR 94 There are 3 auto tuning modes available as a result of which the settings of one of the controllers will be selected The At F mode Auto tuning using both the controller s control loops At F mode during which two outputs of the device are controlled by two controller loops In this process the device determines based on the setpoint and the measured value which loop is to be tuned The second loop receives the same settings When the setpo
12. automatically sets up in the PiD operating mode the modE parameter in the CtrL menu and the calculated settings of the PID H controller s loop will be stored in the appropriate parameters 59 User manual CONTROLLER PUR 94 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 selectable from 1200 to 115200 bits second Baud rate 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 999 9999 Measurement value no decimal point Oh AOh 60h The status of the measurement Oh data valid AOh top border of i the measurement range is exceeded 60h bottom border of the 02h No COh 10h RAA 20h measurement range is exceeded COh sensor failure 10h error of user char
13. 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 Modification 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 40 determine the permissible range of input signal Figure 7 1 The permissible range allow user
14. delay of relay R1 0 0 36 unit Unit of t on toFF parameters of relay R1 SEC 36 InLo The lower limit of the PWM range of relay R1 0 0 37 InHi The upper limit of the PWM range of relay R1 100 0 37 PEri Relay R1 output signal period 1 0 37 Hon Low state minimal time of relay R1 PWM signal 0 0 37 HoFF High state minimal time of relay R1 PWM signal 0 0 37 AL Reaction for critical situation of relay R1 oFF 37 OFFS Relay R1 output offset 0 0 36 SEnS Relay R1 output sensitivity 100 0 36 Parameters of relay R2 operation rEL2 menu Sour Relay R2 signal source InPU 35 modE Operation mode of relay R2 on 35 SEtP Relay R2 threshold 20 0 35 SEt2 Relay R2 second threshold 40 0 35 HYSt Hysteresis of relay R2 0 0 36 ton Turn on delay of relay R2 0 0 36 toFF Turn off delay of relay R2 0 0 36 unit Unit of t on toFF parameters of relay R2 SEC 36 InLo The lower limit of the PWM range of relay R2 0 0 37 InHi The upper limit of the PWM range of relay R2 100 0 37 PEri Relay R2 output signal period 1 0 37 H on Low state minimal time of relay R2 PWM signal 0 0 37 HoFF High state minimal time of relay R2 PWM signal 0 0 37 AL Reaction for critical situation of relay R2 oFF 37 70 User manual CONTROLLER PUR 94 Parameter Description Default value User s value pecs OFFS Relay R2 output offset 0 0 36 SEnS Relay R2 output sensitivity
15. error check Hi and Lo byte ADDR FUNC REG H L COUNT H L BYTE C DATA H L CRC LH 1 Read of the displayed value measurement PUR 94 device address 01h ADDR FUNC REG H L 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 L H 01 03 02 00 FF F8 04 DATA H L displayed value 255 no decimal point Decimal point position can be read from reg 03h 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 REG H L COUNT HL 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 22 DC 18 89 DATA identification code 22DCh 68 User manual CONTROLLER PUR 94 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 DATA H 0 DATA L new device address 2 The answer the same as the message ADDR FUNC REG H L DATA H L CRC LH 01 06 00 20 00 02 09 C1 4 Change of baud rate of all devices conne
16. 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 32 User manual CONTROLLER PUR 94 A Pay attention when device parameters are being changed If it is possible turn off controlled installation machine 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 to exit present menu level and goes to upper MENU level menu or measurement mode ED After about 1 min since last use of the buttons device exits the menu mode a
17. of parameters available Conn I Hon II in inPt menu depends on value i i of tYPE parameter CHar II ol HoFF I E D FiLt I AL I toFS I oi Pnt I ES l bei HiC I I lt AddP I dELP I EdtP B Y Lor See next page E Hir I Parameter edition User manual CONTROLLER PUR 94 See previous page _ Parameter v See next page OutP CG OSou Ge ry Z5 edition i ipae peli dum once d Omod i OUtL I i D OUtH I i i Lor Hir I t AL 1 option M eR I A a Se sa CL lt modE L r Ga SEtP I e Y a i EL 99 Parameter bri edition PArH lam z mc A J H Hold modE E id za u D Esc PEA I es II H timE II FuZL II t zs Hdis II t Hr Hr2 I H Hr3 II t H r4 ll E HOUt I Parameter edition 51 User manual CONTROLLER PUR 94 See previous page A 52 4 gt Addr i bAud EE mh mbAc t mbtO rESP 4
18. of relay R4 OFF 37 71 User manual CONTROLLER PUR 94 Parameter Description Default value User s value pena OFFS Relay R4 output offset 0 0 36 SEnS Relay R4 output sensitivity 100 0 36 Activation of acoustic signal menu bEEP AL Activation of acoustic signal by critical situation oFF 38 r1 Activation of acoustic signal by relay R1 oFF 38 r2 Activation of acoustic signal by relay R2 oFF 38 r3 Activation of acoustic signal by relay R3 oFF 38 r4 Activation of acoustic signal by relay R4 oFF 38 Configuration of measurement input inPt menu tYPE Input mode 4 20 38 Conn Connection method A in 39 FiLt Filtering time constant in seconds 0 39 toFS Shifting of measurement scale 0 0 39 CHAr Conversion characteristic mode Lin 39 Pnt Decimal point position 0 0 39 LoC Minimum displayed value for nominal range 000 0 39 Hi C Maximum displayed value for nominal range 100 0 39 Lor Extension of the bottom of the nominal input range 5 0 96 40 Hir Extension of the top of the nominal input range 5 0 96 40 Active current output configuration OUtP menu OSou Active current output signal source InPU 41 Omod Active current output mode 0 20 mA 42 OUtL Display value for 0 mA or 4 mA current output 0 0 42 OUtH Display value for 20 mA current output 100 0 42 Lo r Extension of the bottom of
19. offsetting of a scale is realised independently of cold ends automatic compensation 7 3 5 inPt menu parameters of current and voltage inputs CHAr this option presets type of the conversion characteristic and can be set to Lin m li Sgr ee 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 a If user defined characteristic is selected and if number of defined points is lower than 2 then warning Errc is displayed in measurement mode The process of displayed result calculation is described in details in DISPLAY VALUES CALCULATION paragraph Pnt decimal point position It can be set to one of Di 0 Di 0 0 Di 0 00 0 000 Decimal point position is changed by 4 v buttons LoC These parameters describe the values displayed for minimum and maximum input Hi C current For example if input type is set to 4 20 mA Lo C parameter defines the value displayed when input current is equal 4 mA and Hi C parameter defines the value displayed for 20 mA of input current Available range for these parameters 999 9999 Negative values can be set by entering sign on the first position by use of
20. 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 User manual CONTROLLER PUR 94 a N Figure 4 18 Examples of suppression circuit connection a to relay terminals b to the inductive load Logic controller voltage input 24V Figure 4 19 Example of OC type outputs connection for device with OC type output only 17 User manual CONTROLLER PUR 94 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 voltage input 0 10V Figure 4 22 Example of active voltage outputs connection for device with active voltage output only 18 User manual CONTROLLER PUR 94 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
21. parameter in rEL1 menu no decimal point included R Acti parameter in AL menu only when rEL1 is OC type output a ves SFA 0 noCH option 1 USdu option 3Fh Yes 0 1000 duty parameter in AL menu only when rEL1 is OC type output M Current OC type output fill factor expressed as a percentage without gon ES PSZ the decimal point only where rEL1 is the OC type output 41h Yes 999 9999 OFFS parameter in rEL1 menu no decimal point included 42h Yes 0 1000 SEnS parameter in rEL1 menu no decimal point included Sour parameter in rEL2 menu 43h Yes 0 3 Q InPU option 1 modb option 2 PidH option 3 PidC option 62 User manual CONTROLLER PUR 94 Register Write Range Register description modE parameter in rEL2 menu 44h Yes 0 5 0 noAC mode 1 on mode 2 oFF mode 3 in mode 4 out mode 5 PULS mode 45h Yes 999 9999 SEtP parameter in rEL2 menu no decimal point included 46h Yes 999 999 HySt parameter in rEL2 menu no decimal point included TE a mM 48h Yes 0 989 1 tenth ot minutes depend on unit parameter register no 47h MEN d 4Ah Yes 0 2 See ide SE only when rEL2 is relay output 0 4Bh Yes 999 9999 SEt2 parameter in rEL2 menu no decimal point i
22. particular wires Ra Rd MUST BE IDENTICAL to enable proper compensation of it s resistance The resistance of particular wire should not be greater than 20 Q 15 User manual CONTROLLER PUR 94 16 i 9 prfsz ss 34 n c n c Ra Rb Rc Rd Ra pel Rd gel Re V M A T RTD RTD RTD Ra Rb Rc Rd can be different Ra Rc Rd Ra Rc can be different Figure 4 16 Connection of RTD sensors a 4 wires circuit b 3 wires circuit c 2 wires circuit The connection circuit should not be changed while unit is powered While using TC RTD or voltage inputs 0 150mV the device is able to detect wire breaks Wire breaks are detected within about 2 seconds For connectors number 32 and 33 of RTD input it may take up to about 7 seconds During detection measurements will be incorrect If wire break is detected S Err sensor error message is displayed 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 5W resistor connected in parallel to relay terminals or better directly
23. therefore are suitable for constant value regulating of the object or technological processes that contain such elements as furnaces boilers etc The PUR 94 device includes a proportional integral derivative PID controller with two independent control loops one for controlling the heating process and the second for the cooling system a general diagram of the controller is shown in Figure 6 5 Hereafter these loops are called PID H loop and PID C loop respectively as shown in Figure 6 5 Each of these loops is composed of the following blocks P proportional I integral and D derivative whose proper summing up gives the output signal controlling the object Figure 6 6 The controller s signal may be redirected to any output of the device which means that the PUR 94 may be used to control most objects used in the industry The PID controller can be used to adjust such values as temperature humidity pressure force speed flow rate or level of a liquid or loose material etc Note however that the controllers included in the device have a common setpoint SEtP parameter and so should be used in applications where one of the controllers e g PID H is used to control actuators that increase the state of the regulated object e g heating and the other controller e g PID C is used to control actuators reducing the state of the regulated object e g cooling Additional controller parameters such as dead zone fuzzy logic block or inert
24. 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 User manual CONTROLLER PUR 94 Lo r 75 0 3 mA Hi r 5 0 1 mA RE nominal measurement range 4 20mA d min rid mie i La em e Yt tt ima 0 1 4 20 21 22 permissible measurement range pt gt 4 LN measurement result is displayed 4 display regardless on nominal range exceeding display message Lo message Hi Figure 7 1 Example of definition of permissible range of input signal Lo r and Hi r parameters 4 20 mode The Lo r parameter is important if input is set to 4 20 1 5 or 2 10 mode only and determines lower border of the permissible range In the other cases for current and voltage ranges lower border of the permissible range is always 0 For example if input is set to 4 20 mode then lower border is calculated due to expression Imn 4 mA 4 mA x Lor 95 The Lo r value can be set from 0 to 99 996 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 ca
25. will linearly vary the percentage share of the high status over the entire period of the signal in accordance with fill factor D In those cases where the source value is less than the value of the InLo parameter the fill is equal to 096 i e the output signal will always in low level state and when the source value is greater than the value of the INHi parameter the fill will be equal to 100 i e the output signal will always in high level state Factor D is defined by the following formula p T where t the duration of the high status for a single pulse T the duration of the signal 30 User manual CONTROLLER PUR 94 Di 33 Sour 0 2 4 6 8 10 12 14 16 parameter InLo Ini parameter parameter Figure 6 13 Example characteristics of an input output signal in the PULS mode for parameters InLo 4 InHi 14 There is also a possibility of protecting the signal from too high or too low fill factor by inserting the parameters H on and HoFF These specify the minimum duration of the high signal and low signal respectively When setting the output status the parameters H on and HoFF have a higher priority than the fill factor does not exceed the value of the parameter Peri since this will cause the OC output Gi It should be noted that the sum of the values of the parameters H on and HoFF to move to a low status The AL parameter specifies the permanent fill
26. 100 0 36 Parameters of relay R3 operation rEL3 menu Sour Relay R3 signal source InPU 35 modE Operation mode of relay R3 on 35 SEtP Relay R3 threshold 20 0 35 SEt2 Relay R3 second threshold 40 0 35 HYSt Hysteresis of relay R3 0 0 36 ton Turn on delay of relay R3 0 0 36 toFF Turn off delay of relay R3 0 0 36 unit Unit of t on toFF parameters of relay R3 SEC 36 InLo The lower limit of the PWM range of relay R3 0 0 37 InHi The upper limit of the PWM range of relay R3 100 0 37 PEri Relay R3 output signal period 1 0 37 Hon Low state minimal time of relay R3 PWM signal 0 0 37 HoFF High state minimal time of relay R3 PWM signal 0 0 37 AL Reaction for critical situation of relay R3 OFF 37 OFFS Relay R3 output offset 0 0 36 SEnS Relay R3 output sensitivity 100 0 36 Parameters of relay R4 operation rEL4 menu Sour Relay R4 signal source InPU 35 modE Operation mode of relay R4 on 35 SEtP Relay R4 threshold 20 0 35 SEt2 Relay R4 second threshold 40 0 35 HYSt Hysteresis of relay R4 0 0 36 ton Turn on delay of relay R4 0 0 36 toFF Turn off delay of relay R4 0 0 36 unit Unit of t on toFF parameters of relay R4 SEC 36 InLo The lower limit of the PWM range of relay R4 0 0 37 InHi The upper limit of the PWM range of relay R4 100 0 37 PEri Relay R4 output signal period 1 0 37 Hon Low state minimal time of relay R4 PWM signal 0 0 37 HoFF High state minimal time of relay R4 PWM signal 0 0 37 AL Reaction for critical situation
27. 2 5 mA then In 2 5 4 16 0 0938 and if input current is equal 20 5 mA then I 20 5 4 16 1 0313 Example 3 The linear characteristic Let the input mode 4 20 mA and parameters Lo C and Hi C equal to 300 and 1200 respectively The calculations will be done for three different input currents from example 2 36 User manual CONTROLLER PUR 94 a ln 210 mA and I 0 375 Accordingly to expression on page 54 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 ln 2 5 mA and I 0 0938 W 441 c ln 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 lin 10 mA and h 0 375 Accordingly to expression on page 54 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 211 300 89 b lin 2 5 mA and 0 0938 W 287 C ln 20 5 mA and 1 0313 W 1295 Example 5 The square root characteristic Let the input mode 4 20 mA and parameters Lo C and Hi C equal to 300 and 1200 respectively The calculations will be done for there different input currents from exam
28. 4 v buttons 39 User manual CONTROLLER PUR 94 AddP e dELP EdtP 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 9 199 9 Coordinate Y defines displayed value for particular X value The Y value can be changed in range 999 9999 decimal point position depend on Pnt parameter menu inPt 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 point 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
29. 42 Lu 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 Example 8 Connecting and preparing the system for the auto tuning process Let s assume that we want to carry out the auto tuning process of the PID H controller s loop connected to an OC type output in the PULS mode In such an arrangement the device is to control the temperature of an oven in a free state of 20 C using a high power SSR relay and the feedback concerning the temperature is obtained using a Pt100 sensor 230V AR F SSR OC type output PUR 94 Pt100 Measurement input l Figure 10 5 Example arrangement of connections for auto tuning Preparatory steps to launch the auto tuning process a Connect the system in accordance to the diagram in Figure 10 5 b In the selected OC type output set parameter Sour as PidH parameter modE as PULS parameter Peri at 6 0 c Set the tYPE parameter in the inPt menu as Pt 1 d Set the setpoint to 120 C the SEtP parameter in the CtrL menu e Set the modE parameter in the CtrL menu as At H f Wait until the device carries out auto tuning at which time the display will blink g Once the display stops blinking the device
30. 5 voltage input range 0 5 V 1 5 voltage input range 1 5 V 0 10 voltage input range 0 10 V 2 10 voltage input range 2 10 V 60 voltage input range 0 60 mV 75 voltage input range 0 75 mV 100 voltage input range 0 100 mV 150 voltage input range 0 150 mV Pt 1 Pt 100 input Pt 5 Pt 500 input Pt10 Pt 1000 input tc k thermocouple input type K tc S thermocouple input type S tc J thermocouple input type J tc t thermocouple input type T tc n thermocouple input type N tc r thermocouple input type R tc b thermocouple input type B tc E thermocouple input type E 38 User manual CONTROLLER PUR 94 For current and voltage inputs displayed values are defined by parameters Lo C Hi C or by user defined characteristic points and parameter Pnt FiLt option allows to change the filtration time constant Expressed in seconds Acceptable values range from O no filtration to 255 7 3 4 inPt menu parameters of temperature inputs Conn connection method of RTD input This parameter can be set to values 4 in 4 wire method 3 in 3 wire method 2 in 2 wire method toFS offset expressed in C range 9 9 C for RTD input or 99 C for TC input This parameter allows shifting of measurement scale and express value added to calculated measured result The
31. 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 For temperature inputs TC and RTD there is linear characteristic available only For this kind of inputs nominal measurement range and permissible measurement range are the same no range extension available Figure 6 3 Lo r parameter Hi r parameter Ki nominal measurement range PA Ka gt gt 4 mA 20mA 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 depending on exceeded value see description of Lo r and Hi r parameters paragraph inPt menu The warning can be effect of measurement circuit malfunction In that case Lo means shortcut and Hi means break of measurement circuit If sensor failure will be detected e g broken wires then S Err warning will be displayed Hi r parameter nominal measurement range Pd OmV 150 mV permissible measurement range Figure 6 2 Definitions of measurement ranges in mode 0 150mV If the measurement
32. Assisting the automation rz simex industry since 1986 User manual CONTROLLER PUR 94 Firmware v 1 00 or higher Inputtype universal 4x20 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 2015 10 01 PUR 94_INSSXEN_v 1 01 003 User manual CONTROLLER PUR 94 CONTENTS 1 BASIC REQUIREMENTS AND USER SAFETN EEN 3 2 GENERAL CHARACTERISTICS itii esce srtae sica spain te ratae os add Adik st eaa W awa ao aS PR asas 4 3 TECHNICAL 5 4 DEVICE INSTALLATION 8 41 o EE 8 Lcd az ana nd Salesian DW AO R NZOZ T 4 3 CONNECTION METLIOD ierit ia AO A A EA TN DR n ea araa ERE Nigri 5 FRONT PANEL DESCRIPTION 6 PRINCIPLE OF OPERATION 20 6 1 MEASUREMENT MODE initi tate tpa i ip A HE TA a EAR HIE ERA ARV Pen 20 6 1 1 detection OF THE PEAK VALUES sisse awa a EA 21 6 2 DIDREGULATORS 6 3 CONTROL OF THE RELAY OUTPUTS 6 3 1 One threshold mode 6 3 2 Two thresholds mode 6 3 3 PWM Controlling 7 DEVICE PROGRAMMING 7 1 PROGRAMMING MENU 7 2 PARAMETERS EDITION 7 2 1 Numeric parameters digit change model 383 7 2 2 Numeric parameters slide change model 33 7 2 3 Swi
33. EN i EE toFF 0 EEEE i m rfl rz b ime d relay state 4 e f EM R i MES modE on i i losed ton gt 0 rt lee ba Popei toFF gt 0 open i i i Fog rn teal gt GH ES ime e relay state 4 bog m ton E toFF A it modE oFF E Sos dosed parameter Parameter BE ton gt 0 es i 7 torr 0 1 Loser E Te i r z AE ime s toFF t on parameter parameter Description A B C D points where measured signal exceeds border values expected value allowed deviation Bon Borr Don Dor relays state changes moments for t on gt 0 toFF gt 0 ta te tc to time periods while input signal is in zone A or zone B Figure 6 11 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 11 a The relay can change his state only when input value exceeds over or under border value and tA tB tC tD times Figure 6 11 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 ton and toFF parameters are set to 0 then the relay state will be changed as soon as input value exceeds any of the border values see points A and C Figure 6 11 a b c If values of ton or and toFF are positive then rela
34. EtP parameter in rEL4 menu no decimal point included 6Ch Yes 999 999 HySt parameter in rEL4 menu no decimal point included en ee i Gen Yes ng ofe orminules depend on unit parameter eer EOR m ve dedo e ire nee men 70h Yes 0 2 o e only when rEL4 is relay output 0 71h Yes 999 9999 SEt2 parameter in rEL4 menu no decimal point included 72h Yes 999 9999 InLo parameter in rEL4 menu no decimal point included 73h Yes 999 9999 InHi parameter in rEL4 menu no decimal point included 74h Yes 0 9999 PEri parameter in rEL4 menu no decimal point included 75h Yes 079999 H on parameter in rEL4 menu no decimal point included 64 User manual CONTROLLER PUR 94 Register Write Range Register description 76h Yes 0 9999 HoFF parameter in rEL4 menu no decimal point included 77h Ves 021 Acti parameter in AL menu only when rEL4 is OC type output 0 hoCH option 1 USdu option 78h Yes 071000 duty parameter in AL menu only when rEL4 is OC type output S Current OC type output fill factor expressed as a percentage without M Gs da the decimal point only where rEL4 is the OC type output 7Ah Yes 999 9999 OFFS parameter in rEL4 menu no decimal point included 7Bh Yes 0 1000 SEnS parameter in rEL4 menu no decimal point included
35. H regulator 0 0 44 tl H integral gain factor I of PID H regulator 0 0 44 td H derivative gain factor D of PID H regulator 0 0 44 OF H Offset of PID H regulator 0 0 44 Lo H The lower characteristic limit of PID H 00 44 regulator Hi H The upper characteristic limit of PID H 100 0 44 regulator PID C regulator configuration ParC menu 44 P C proportional gain factor P of PID C regulator 0 0 44 tl c integral gain factor I of PID C regulator 0 0 44 td c derivative gain factor D of PID C regulator 0 0 44 OF C Offset of PID C regulator 0 0 44 Lo C The lower characteristic limit of PID C 0 0 44 regulator Hi C The upper characteristic limit of PID C 100 0 44 regulator PID regulators configuration ConF menu 45 dEAd Dead zone 0 0 45 73 User manual CONTROLLER PUR 94 SE Desc Parameter Description Default value User s value page StAr Start state of the regulators 0 0 45 dsrC Feedback of the regulators LooP 45 InEr Inertial block OFF 45 PID regulators configuration FuZL menu 46 SLOP Incline of the characteristics of the fuzzy logic 46 0 0 block FuZL menu parameter unit Time unit of incline of the characteristics of the 46 SEC fuzzy logic block FuZL menu parameter HySt Hysteresis of incline of the characteristics of the 0 0 46 fuzzy logic block FuZL menu parameter Display parameters bri Displ
36. K are used to make it more readable example modE tc K 34 User manual CONTROLLER PUR 94 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 Sour modE SEtP SEt2 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 this parameter specifies the source of the signal controlling the output InPU output is controlled using signals from the measurement input modb control via Modbus registers PidH control via the control loop of the PidH controller PidC control via the control loop of the PidC controller 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
37. ONTROLLER PUR 94 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 depending on version Humidity Altitude Screws tightening max torque Max connection leads cross section Safety requirements EMC RS 485 8N1 and 8N2 Modbus RTU not separated 1200 bit s 115200 bit s LED 4 digit 20mm height red or LED 4 digit 20mm 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 5mm 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 Q 1350V according to PN EN 61326 1 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
38. acteristic 20h waiting for the first measure B Pnt parameter in InPt menu decimal point position osh ves SS 0 0 1 0 0 2 0 00 3 0 000 State of the relays and alarm LED binary format 1 on 0 off 00000000 000edcba 04h Yes see descr a relay R1 b relay R2 c relay R3 d relay R2 e alarm LED If written only a b c d bits are important others are ignored these bits allows user to control the relays via RS 485 interface 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 05h 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 06h No 999 9999 Peak drop value no decimal point 08h No 0 50 Temperature inside device housing expressed by 1 C 60 User manual CONTROLLER PUR 94 Register Write Range Register description tyPE parameter in InPt menu nominal input range 0 0 20 mA range 1 4 20 mA range 2 0 5 V range 3 1 5 V range 4 0 10 V range 5 2 10 V
39. ay brightness bri6 47 Configuration of peaks detection function HOLd menu modE Kind of detected changes norm 47 PEA Minimum detected change 0 0 47 timE Maximum time of peak displaying 0 0 47 HdiS The type of displayed value HOLd 47 Hr Source of relay R1 and LED R1 control rEAL 48 H r2 Source of relay R2 and LED R2 control rEAL 48 H r3 Source of relay R3 and LED R3 control rEAL 48 H r4 Source of relay R4 and LED R4 control rEAL 48 HOUt Source of current output control rEAL 48 Settings of access to the configuration parameters SECu menu Art Permission to changes of relay R1 threshold on 48 without of the user password knowledge Ar2 Permission to changes of relay R2 threshold on 48 without of the user password knowledge A r3 Permission to changes of relay R3 threshold on 48 without of the user password knowledge Au Permission to changes of relay R4 threshold n 48 without of the user password knowledge APid Permission to changes of regulator s setpoint n 48 without of the user password knowledge RS 485 interface configuration menu rS Addr Device address 0 48 bAud Baud rate 9 6 48 mbAc Permission to changes of configuration registers on 48 74 User manual CONTROLLER PUR 94 Parameter Description Default value User s value pec mbtO Maximum delay between received messages 0 49 rESP Additional delay of answer transmission Std 49 Configuration of numerical parameters edition Edit Numerica
40. 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 repairs at an authorized service centre User manual CONTROLLER PUR 94 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 r
41. cted to the net BROADCAST message ADDR FUNC REG H 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 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 H L CRC LH 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 0 no errors DATA H3 L3 reg 03h 1 decimal point position 0 0 E There is no full implementation of the Modbus Protocol in the device The functions presented above are available only 69 User manual CONTROLLER PUR 94 12 DEFAULT AND USER S SETTINGS LIST Parameter Description Default value User s value pania Parameters of relay R1 operation rEL1 menu Sour Relay R1 signal source InPU 35 modE Operation mode of relay R1 on 35 SEtP Relay R1 threshold 20 0 35 SEt2 Relay R1 second threshold 40 0 35 HYSt Hysteresis of relay R1 0 0 36 ton Turn on delay of relay R1 0 0 36 toFF Turn off
42. d 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 I gt 1 then segment defined by points X PL 90 0 X PH 100 0 will be used 55 User manual CONTROLLER PUR 94 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 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 53 so if lin 10 mA then 10 mA 4 mA 6 mA and this result should be divided by the width of input range 16 mA Finally the normalized result 6 16 0 375 In case when input current exceeds nominal measurement range calculations are similar For example if input current is equal
43. d 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 Ti 4 Jee for 4 20mA range Tp I 20 for 0 20mA range where li Means input current in mA and lIn normalized result If measured value exceeds the nominal input range 0 20mA or 4 20mA and do aD not exceed the permissible input range then received normalized result will exceed 0 1 range e g input range 4 20 mA input current 3 mA the normalized result is equal 0 0625 and for input current 22 mA the normalized result is equal 1 125 In such cases presented expressions are still correct 10 1 ADDITIONAL CALCULATIONS USED CONVERSION CHARACTERISTIC The manner of the additional computation of the displayed result depends on selected conversion characteristic All presented charts are connected with the input range 4 20 mA 53 User manual CONTROLLER PUR 94 10 1 1 Linear characteristic The normalized result is converted by fixed coefficients determined by Lo C and Hi C parameters
44. d its setting will not change following the rocess The process of auto tuning in this mode may commence subject to the following conditions 1 The value measured by the device must be greater than six fifths of the setpoint 2 The source of at least one of the device s outputs must be PID C Additionally those outputs cannot be set in the noAC mode Auto tuning that is already underway is a very sensitive process So the user should pay attention to events that could interrupt the tuning of the settings These events include 1 Loss of power to the device 2 Time for auto tuning exceeded 24 h 3 When the PID controller s operating mode is switched over 4 Measurement error e g sensor failure 5 Change in the parameters of the device 26 User manual CONTROLLER PUR 94 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 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 on
45. digit special SZ Parameter SG edition password entering gt 0 ESC Y M SECu 3 A m Y C c E n mo kend L I za L Dn 7 S e Y bel bei dEFS amp 7 S fe 3 SEE gt SEt ESC gt Default settings restoring i gt Scod Le T lt An I i I An I t bi AB kl E i bei Ar II i APid I Parameter edition User manual CONTROLLER PUR 94 8 THE ALARM LED Alarm LED AL lights in cases exceeding of permissible measurement range detection of sensor malfunction shortcut or break of measurement circuit 9 OVER CURRENT PROTECTION The current input of the device is equipped with over current protection circuit This circuit protects the standard resistor to damage Maximum input current is set to 50mA typical When temperature of the standard resistor falls the protection circuit will turn off himself automatically and the device will measure the input current again Due to thermal phenomenon in the standard resistor precision of the measurement may be lower during few minutes up to the standard resistor temperature will falls to the environment temperature 10 DISPLAYED VALUES CALCULATION For simplicity of examples it s assumed that current input is selected and all calculations are related to this input When voltage input is selecte
46. e 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 14 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 49 User manual CONTROLLER PUR 94 7 4 MENU STRUCTURE 50 ESC r Measurement mode Press and hold at least 2 seconds SS 4 digit user password entering if it is different from 0000 fe 5 ES A rEL1 ja 1 Sour L D Ed 5129 s WS Options similar dE a to rEL1 menu m z te E e WAM Options similar r SEP Zb 2 a Io EL menu z JAZ Sle sev u pen Options similar a to rEL1 menu na MENU La y a M CL z z i CJ I _ Parameter PEER t n T edition ton I i 1 u lt toFF u GE Ee 2 ES e i I F Ss ol InLo Iu M Sie GJ mHi u E Y 2 2 t inet E SE erg GJ Peri u i D 26 edition Notice D D Quantity
47. e device is available in two power supply versions Exact description of functions is provided in further section of the instruction The PUR 94 is designed to regulate such processes as heating cooling temperatures with adjustable delay times for the operation of the output relays and controlling of valve levels User manual CONTROLLER PUR 94 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 Q 85 260V AC DC max 6 5 VA Q 16V 35V AC max 6 5 W 19V 50V DC Current input 20 mA Current measurement accuracy Current input resistance Accepted prolonged input overload 0720 mA 4 20 mA overload protected input current is limited to 50 mA typically 0 196 25 C one digit for 0 20 mA range 65 Q typical 30 Q 20 Voltage input 10V range Voltage measurement accuracy Voltage input resistance Accepted prolonged input overload 0 5 V 1 5 V 0 10 V 2 10 V 0 196 25 C one digit for 0 10 V range gt 100 kW while maintaining correct polarization 20 Voltage input 150mV range Voltage measurement accuracy Voltage input resistance Accepted prolonged input overload 0 60 mV 0 75 mV 0 100 mV 0 150 mV 0 1 25 C one digit for 0 150 mV range gt 1 5 MQ 20 RTD input
48. e fill factor equal to 096 the upper limit of the range within which a change in the signal source causes a change in the PWM output signal fill factor Above this limit the PWM output signal will have the fill factor equal to 10096 the duration of one cycle of the PWM output signal in the range 0 999 9 s low state minimal time high state minimal time To ensure proper operation the sum of the values of the H on and HoFF parameters should not exceed the value of the Peri parameter The duration of the high and low status parameters H on and HoFF are calculated for each period the Peri parameter separately this parameter defines how the relay reacts to an alarm state The following options are available noCH relay do not change his state on relay will be turned on OFF relay will be turned off Acti this occurs only when the modE parameter is set to PULS it turns on and disables responses to alarm state for the OC type output noCH the output status does not change during alarm state USdu in an alarm state the output sets itself to the fill factor as set in the duty parameter duty this occurs only when the modE parameter is set to PULS it specifies the fill factor in the event of an alarm state If parameter modE is set to on oFF in Out or PULS the critical situation means that allowable measurement range is e
49. e 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 47 User manual CONTROLLER PUR 94 H r1 H r4 relay LED outputs R1 R4 operation mode rEAL relay LED operates depend on the current value HOLd relay LED operates depend on the peak drop value HOUt current output operation mode rEAL current output operates depend on the current value HOLd current output operates depend on the peak drop value 7 3 10 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 aD again The one use pass
50. e threshold is used Figure 6 9 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 10 the relay will be turned on when value of input signal is contained in zone A modE in or zone B modE out and turned off if the signal is contained in the second one state of relay LED SEtP parameter measure U HYSt parameter Figure 6 9 One threshold control of the relay LED outputs state of relay LED SEEN or GET SB measure HYSt Figure 6 10 Two threshold control of the relay LED outputs 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 27 User manual CONTROLLER PUR 94 6 3 1 One threshold mode Figure 6 11 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 ty SEtP parameter LE CES ZS lt gt expected signal value a zone A NE B it l zone B i EN I M allowed signal bug NEEDLE E MENOR deviation b relay state 4 ME Dd EN NE ue modE on a E vz N MESE ton 0 closed NEN WW I riot toFF 0 SEM M oen i 11i EEE g WR ime c relay state 4 bog i mE L4 i Lpd modE oFF ZEN oil ton 0 R
51. e 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 WON a 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 A0h 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 67 User manual CONTROLLER PUR 94 11 3 EXAMPLES OF QUERY ANSWER FRAMES Examples apply for device with address 1 All values are represent hexadecimal Field description Device address on modbus network Function code Starting address address of first register to read write Hi and Lo byte No of registers to read write Hi and Lo byte Data byte count in answer frame Data byte Hi and Lo byte CRC
52. ecifies the change in the setpoint fuzzy logic block for every unit specified in the parameter as unit Setting a 0 value disables the fuzzy logic block unit this parameter specifies the unit of time in which the setpoint of the fuzzy logic block will increase HySt the difference between setpoint specified for the controller specified in the SETP parameter and the setpoint of the fuzzy logic block to which the setpoint of the fuzzy logic block will seamlessly progress User manual CONTROLLER PUR 94 120 100 fuzzy value 80 60 SLOP 0 SLOP 1 40 SLOP 5 SLOP 10 20 0 unit 0 20 40 60 80 100 120 140 Figure 7 4 Change in the fuzzy setpoint depending on the setting of the SLOP parameter 7 3 8 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 9 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 4 timE maximum tim
53. ecommended 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 PUR 94 device has a universal input that can be configured to work as a current input in the range 0 20mA as a voltage input in the range 0 10V and 0 150 mV as an RTD input operating with Pt 100 500 1000 sensors and as a TC input operating K S J T N R B and E type thermocouples The device automatically compensates the temperature of cold junction of thermocouple sensor RTD and TC inputs feature full linearization of characteristics Only one input type can be used at a time The exact measurement ranges of the inputs are quoted in the next chapter The measurement is shown on a 4 digit LED display The device can be equipped with 1 2 or 4 relay outputs and one OC type output not available in the 4 relay output version which can be controlled from the measuring inputs via Modbus protocol or a PID controller implemented in the device with two control loops and an auto tuning option Optionally the device in version with two relays and OC type output can be equipped with an active current output a passive isolated current output or an active voltage output An RS 485 communication interface and a sensor transducer power supply output are available as standard Th
54. ending on version uo JS R1 R2 optional optional DCH Umax 30V DC Imax 30mA Pmax 100mW Figure 4 11 Terminals description two relay one OC type and one passive current outputs Power 24V 5 10 RS 485 supply active Imax 100mA GND DATA depending on version Voltage output Uo DATA A optional A s e 7 s e optional optional optional OC3 Umax 30V DC Imax 30mA Pmax 100mw 24V DC Figure 4 13 Connection of 2 wire current transducer 14 User manual CONTROLLER PUR 94 24V DC Figure 4 15 Connection of voltage transducer Temperature sensor can be connected to the device in typical 4 wire circuit Figure 4 16a or 3 wire circuit Figure 4 16b Due to precision of measurement 4 wire circuit is recommended If 2 wire circuit is used the resistance of wires should be as small as possible to avoid of measurement errors Measured value can be corrected constant correction using toFS parameter from menu inPt Due to low precision 2 wire connection is not recommended When 4 wires or 2 wires connection is used the resistance of particular wires Ra Rd CAN BE DIFFERENT When 3 wires connection is used the resistance of
55. eter in PArC menu no decimal point included FBh Yes 999 9999 OF C parameter in PArC menu no decimal point included FCh Yes 0 999 Lo C parameter in PArC menu no decimal point included FDh Yes 1 1000 Hi C parameter in PArC menu no decimal point included FEh Yes 0 9999 dEAd parameter in ConF menu no decimal point included FFh Yes 0 9999 StAr parameter in ConF menu no decimal point included dSrC parameter in ConF menu Tm Yes 1502 0 Err option 1 LooP option InEr parameter in ConF menu 101h Yes 0 3 0 OFF option 1 HArd option 2 mEdi option 3 SoFt option 102h Yes 0 9999 SLOP parameter in FuZL menu no decimal point included unit parameter in FuZL menu d yes BPE 0 SEC option 1 min option 2 hour option 104h Yes 0 9999 HySt parameter in FuZL menu no decimal point included 105h No 1000 1000 Value of regulator s output in percentage 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 register so it is possible to block a writes but impossibl
56. eturning 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 ENTERI 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 Due to problem with direct displaying of m and K letters they are exchanged aD with special signs jm for m and F for K respectively However in user manual letters m and
57. 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 A Using any other agents can cause permanent damage to the housing RZ 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 alarm LED indicator AL ML display Rie R26 R3 Thresholds exceeding A bot LED indicators R res programming pushbuttons 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 19 User manual CONTROLLER PUR 94 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
58. hat 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 When 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 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 i In order to install the unit a 90 5 x 43 mm mounting hole Figure 4 1 4 2 must be User manual CONTROLLER PUR 94 90 5 mm YMA 43 mm 8 mm Wf mm max 5 mm 1mm gt iL 7 Figure 4 1 Recommended mounting hole dimensions 92 mm YW 7 2 max 5 mm gt lt 43 mm Figure 4 2 Allowable mounting hole dimensions 5mm eg e Figure 4 3 Installing of brackets and dimensions of connectors User manual CONTROLLER PUR 94 115 mm EE Ex 67 mm Figure 4 4 Minimum distances when assembly of a number of units 4 3 CONNECTION METHOD Caution A 10 Installation should be co
59. he range due to formula Out A A x Lo r 96 where A lower signal value range limit 42 User manual CONTROLLER PUR 94 This parameter can be set from 0 to 99 9 for active current output and active voltage output or from O to 29 9 for passive current output Parameter Hi r defines higher border of the range due to formula Out B B x Hi r where B higher signal value range limit This parameter can be set from 0 to 19 9 for active and passive current output or from O to 9 9 for active voltage output In example on page 58 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 1 2 voltage will be set to 1 2 V 0 6 voltage will be set to 0 6 V 0 0 vol
60. 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 4 33 User manual CONTROLLER PUR 94 can be used If is pressed shortly and button v is still pressed decreasing slow down for a moment only if is pressed and held while button v is still pressed the decreasing slow down and will be kept on lower speed Press ENTER at least 2 seconds to accept the changes after that question Set is displayed and user must to confirm or cancel the changes To conform changes and story it in EEPROM press ENTER button shortly after SEt is displayed To cancel the changes press ESC button shortly after SEt is displayed After that device returns to the menu 7 2 3 Switch parameters LIST type Switch parameters can be described as a sets of values a lists out of which only one of the options available on the list can be selected for the given parameter Options of switching parameter are selected using v keys Short pressing of ENTER causes in displaying of the acknowledge question SEt If key ENTER is pressed again the changes are accepted stored in EEPROM end the edition process finished Pressing the key ESC after SEt causes in cancelling of made changes and r
61. i Wa A e cta pared NOA AA PY aaa AAA 60 11 2 TRANSMISSION ERRORS DESCRIPTION 11 3 EXAMPLES OF QUERY ANSWER FRAMES 12 DEFAULT AND USER S SETTINGS LIST User manual CONTROLLER PUR 94 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 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
62. ial block enables even more precise control over the physical object optimizing but also protecting the object against over regulation or an excessive rise of the control value 22 User manual CONTROLLER PUR 94 Setpoint SEtP Fuzzy logic block Modbus Master Sour Qut rELWOCx 1 I Fuzzy 4 gt x gt modE setpoint PID H ihe e I d ecc ME VR APTE un Controlled nds Analogue object i e Sou output CS A N gt Omod gt PID C i Measurement input Feedback Z inPt lt Figure 6 5 The general structure of the PUR 94 device Upper limit Hi H Offset HiG gt 1 OF H orc Output Proportional Integral limits Setpoint Dead zona block block SEIP A PH tI H idl or gt gt gt dEAd gt gt gt gt Fuzzy P C LC setpoint lt Err Derivative Inertial block block LooP Feedback gt gt e N gt ee gt InEr Lower limit Lo H Lo C Figure 6 6 General scheme of the PID controller implemented in the PUR 94 device Configuring the PID controller The PID controller can be configured in two ways manually and automatically In manual mode the user defines all factors and additional elements of the controllers fuzzy logic
63. inertia output limiting and dead zone at their own discretion The settings chosen by the device in automatic mode can also be improved and fine tuned The user can disable each block of the PID controller as well as additional blocks This is done by setting the zero value or OFF option in the selected parameter In automatic mode in the auto tuning process using the Ziegler Nichols method the device calculates and tunes the parameters P I and D of one of the controllers loops Additional blocks fuzzy logic inertia output limiting and dead zone are not configured in this mode and the user must choose them himself according to respective applications The auto tuning process is described later in this chapter 23 User manual CONTROLLER PUR 94 Fuzzy logic block FuZL submenu Step changes in the setpoint can be mitigated by the use of the fuzzy logic block which inserts speed control of the setpoint change Thanks to its application the user may dictate how quickly a fuzzy value approximates the target value in the process SEtP This feature is particularly useful in systems where too rapid change in the setpoint and as it is possible in such a situation the control signal could lead to unwanted behaviour on the part of a object for instance destruction of the product being manufactured It is also possible to set the minimum difference between the setpoint SEtP and the fuzzy setpoint beyond which the controller step change
64. int is greater than the measured value the PID H controller s loop will be tuned and when the setpoint is less than the measured value the PID C controller s loop will be tuned The process of auto tuning in this mode may commence subject to the following conditions 1 The value measured by the device must be greater than six fifths of the setpoint when the PID H controller is tuned or the value measured by the device must be greater than six fifths of the setpoint when the PID C controller will be tuned 2 The source of at least one of the device s outputs must be PidH if the loop of the PID H controller will be tuned or the source of at least one of the outputs must be PidC if the loop of the PID C controller will be tuned In addition these outputs can not be set in the noAC mode The At H mode Auto tuning of the PID H loop the At H mode during which the device uses and adjusts only that loop The second loop remains idle and its setting will not change following the process The process of auto tuning in this mode may commence subject to the following conditions 1 The value measured by the device must be less than four fifths of the setpoint 2 The source of at least one of the device s outputs must be Pid H Additionally those outputs cannot be set in the noAC mode The At C mode Auto tuning of the PID C loop the At C mode during which the device uses and adjusts only that loop The second loop remains idle an
65. l parameters edit mode dig 49 75 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 infoQsimex pl
66. 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 4 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 can be controlled depend on the current value of input signal or the peak value see HOLd menu 21 User manual CONTROLLER PUR 94 a measure timE timE time real measurement result display value Figure 6 4 Process of peaks detection 6 2 PID REGULATORS Operation of the PID controller involves calculating the error value ensuing from the difference between the setpoint and the measured value and responding in such a way as to minimize the calculated error by appropriately adjusting the signal connected to the input of the regulated object Controllers are mainly used in industrial control systems that have large time constants vulnerable to interference from the input of the regulated object and
67. mode Enn e SS 0 dig mode 1 SLid mode Sour parameter in rEL1 menu AP ONES 0 3 0 nPU option 1 modb option 2 PidH option 3 PidC option modE parameter in rEL1 menu 31h Yes 0 5 0 noAC mode 1 on mode 2 oF F mode 3 in mode 4 out mode 5 PULS mode 32h Yes 999 9999 SEtP parameter in rEL1 menu no decimal point included 33h Yes 999 999 HySt parameter in rEL1 menu no decimal point included t on parameter in rEL1 menu expressed in tenth of seconds or M Ke eee tenth of minutes depend on unit parameter register no 36h R toFF parameter in rEL1 menu expressed in tenth of seconds SS e 0 2933 or tenth of minutes depend on unit parameter register no 36h 36h Yes 0 1 unit parameter in rEL1 menu 0 seconds 1 minutes 37h Yes 022 AL parameter in rEL1 menu only when rEL 1 is relay output 0 no changes 1 on 2 off 38h Yes 999 9999 SEt2 parameter in rEL1 menu no decimal point included 39h Yes 999 9999 InLo parameter in rEL1 menu no decimal point included 3Ah Yes 999 9999 InHi parameter in rEL1 menu no decimal point included 3Bh Yes 079999 PEri parameter in rEL1 menu no decimal point included 3Ch Yes 079999 Hon parameter in rEL1 menu no decimal point included 3Dh Yes 079999 HoFF
68. n be set from 0 to 19 9 In example no 1 of the DISPLAY VALUES CALCULATION paragraph the procedure of the permissible input range determining is presented in details If the measurement value do not exceeds permissible measurement range but displayed value exceeds range 999 9999 the warning Ov is displayed rather than the calculated result 7 3 6 OutP menu This menu contains parameters of analogue output control Menu is available if the device is equipped witch analogue output Analogue output can be controlled depend on both present measured value and peak value if peak detection is enabled OSou the source for the analogue output InPU the output is controlled using signals from the measurement input modb the output is controlled using Modbus registers PidH the output is controlled by the positive part of the PID controller s characteristics PidC the output is controlled by the negative part of the PID controllers characteristics 41 User manual CONTROLLER PUR 94 Omod 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 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
69. nal OC2 Umax 30V DC Imax 30mA Pmax 100mW Figure 4 7 Terminals description one relay and one OC type outputs R4 Power optional 24V 5 10 RS 485 DATA supply Imax 100mA GND depending on version B H Uo DATA Cl Gi Gere 31 34 EJ Lo od Y R1 optional optional optional RTD TC Figure 4 8 Terminals description four relay outputs 12 User manual CONTROLLER PUR 94 Power 24V 5 10 RS 485 supply Imax 100mA GND DATA depending on version uo DATA Z n c n c 4 A omei Pis M a oo o E PO dM RI R2 Al Fl UJ OC3 Umax 30V DC Imax 30mA Pmax 100mW 1 2 BI EiT Tefel optional optional Figure 4 9 Terminals description two relay and one OC type outputs Power 24V 5 1096 RS 485 supply active Imax 100mA GND DATA depending on version Current output Uo DATA optional A A GA be Bere 10 11 12 13 14 15 31 32 33 34 35 pe 31 34 y mA optional R2 optional optional RTD OC3 Umax 30V DC Imax 30mA Pmax 100mW Figure 4 10 Terminals description two relay one OC type and one active current outputs 13 User manual CONTROLLER PUR 94 Power puma 24V 5 10 RS 485 supply a Imax 100mA GND DATA DATA a 1 2 s e 7 s o optional dep
70. ncluded 4Ch Yes 999 9999 InLo parameter in rEL2 menu no decimal point included 4Dh Yes 999 9999 InHi parameter in rEL2 menu no decimal point included 4Eh Yes 0 9999 PEri parameter in rEL2 menu no decimal point included 4Fh Yes 0 9999 H on parameter in rEL2 menu no decimal point included 50h Yes 0 9999 HoFF parameter in rEL2 menu no decimal point included 51h Yes 021 Acti parameter in AL menu only when rEL2 is OC type output 0 hoCH option 1 USdu option 52h Yes 0 1000 duty parameter in AL menu only when rEL2 is OC type output e 54h Yes 999 9999 OFFS parameter in rEL2 menu no decimal point included 55h Yes O 1000 SEnS parameter in rEL2 menu no decimal point included Sour parameter in rEL3 menu 56h Yes 0 3 0 InPU option 1 modb option 2 PidH option 3 PidC option modE parameter in rEL3 menu 57h Yes 0 5 0 noAC mode 1 on mode 2 oF F mode 3 in mode 4 out mode 5 PULS mode 58h Yes 999 9999 SEtP parameter in rEL3 menu no decimal point included 59h Yes 999 999 HySt parameter in rEL3 menu no decimal point included TOEA EE a 5Bh Yes 0 999 toFF parameter in rEL3 menu expressed in tenth of seconds or tenth of minutes depend on unit parameter register no 58h
71. nd 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 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
72. nducted 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 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 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
73. ple 2 a lin 10 mA and 0 375 Accordingly to expression on page 55 for square root characteristic 40 375 x 1200 300 919 and next the Lo C value is added to the result so the displayed value W 919 300 619 b lin 2 5 mA and h 0 0938 normalized result is negative so the displayed value is equal to Lo C parameter W Lo C 300 c ln 20 5 mA and I 1 0313 W 1223 57 User manual CONTROLLER PUR 94 Example 6 The user defined characteristic Let the input mode 4 20 mA and the user selected the 10 segment characteristic To do this it is necessary to enter X and Y coordinates of 11 points see Menu inPt The calculations will be done for three different input currents from example 2 so in calculations some of the segments will be used only Let the following points will be given X1 00 0 Y1 50 0 X2 10 0 Y2 30 0 X6 30 0 Y6 30 0 X7 40 0 Y7 80 0 X10 90 0 Y10 900 0 X11 400 0 Y11 820 0 Additionally all other points must to be defined and stored in the device memory a ln 210 mA and 0 375 The segment defined by X6 30 0 and X7 40 0 for this will be selected Accordingly to expressions given for user defined characteristic see page 55 X6 PL 30 Y6 PL 30 X7 PH 40 Y7 PH 80 and l 0 3 the displayed value Y
74. r than the value of mbtO parameter the relays 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 10c 20c answer delayed of 10 20 50 100 of 200 chars respectively where bod 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 1 contains most frequently used values bAud parameter 38 4 57 6 115 2 rESP parameter 10c 20c 500 Tab 7 1 Settings of rESP parameter 7 3 12 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 13 dEFS parameter This setting allows to restore the factory settings of th
75. range 6 0 60 mV range 7 0 75 mV range 8 0 100 mV range 10h Yes 0 20 9 0 150 mV range 10 Pt 100 11 Pt 500 12 Pt 1000 13 thermocouple input K 14 thermocouple input S 15 thermocouple input J 16 thermocouple input T 17 thermocouple input N 18 thermocouple input R 19 thermocouple input B 20 thermocouple input E i CHAr parameter in InPt menu characteristic type 11h Yes 0 3 F d 0 linear 1 square 2 square root 3 user defined 12h Yes 0 255 FiLt parameter in InPt menu time constant in seconds 13h Yes 0 3 Pnt parameter in InPt menu the copy of 03h register decimal point position 0 0 1 0 0 2 0 00 3 0 000 14h Yes 999 9999 Lo C parameter in InPt menu no decimal point included 15h Yes 999 9999 Hi C parameter in InPt menu no decimal point included 16h Yes 0 999 Lo r parameter in InPt menu in 0 1 17h Yes 0 199 Hi r parameter in InPt menu in 0 1 sca z toFS parameter in InPt menu shift of measurement scale 18h Ma 99 99 expressed by 0 1 C for RTD input or by 1 0 C for TC input 19h Yes 022 Conn parameter in InP menu RTD input connection method 0 4 in 1 3 in 2 2 in 20h Yes 0 199 Device address 21h No 22DCh Device identification code ID bAud parameter in rS menu baud rate 22h Yes 0 7 0 1200 baud 1 2400 baud 2 4800 ba
76. resistive Measurement range Measurement accuracy Measurement wires resistance Pt 100 Pt 500 Pt 1000 100 C 600 C 0 1 25 C one digit max 20 Q every wire User manual CONTROLLER PUR 94 Thermocouple input Thermocouple input range Measurement accuracy Accuracy of cold ends temperature compensation K S J T N R B E 200 C 1370 C 50 C 1768 C 210 C 1200 C 200 C 400 C 200 C 1300 C 50 C 1768 C 250 C 1820 C 200 C 1000 C J E 0 1 25 C one digit 0 296 25 C one digit T R B 0 5 25 C one digit 1 C OZA MBDZACHA Sensor power supply output 24V 5 10 max 100 mA stabilized Relay output 0 1 2 or 4 NO 1A 250V AC cos 9 1 OC type output 0 1 2 or 4 30mA 30VDC 100mW Active current output optional for two relays and one OC type output version only Load resistance max range max 0 24 mA 700 Q Passive isolated current output optional for two relays and one 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 Active voltage output optional for two relays and one OC type output version only Load resistance min range max 0 11V 2000 Q Temperature stability Display range 6 50 ppm C 999 9999 plus decimal point User manual C
77. ribed for both of these parameters are met simultaneously 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 its state see paragraph 6 3 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 User manual CONTROLLER PUR 94 d InLo InHi PEri H on HOFF e AL The above mentioned parameters do not occur when the modE parameter is set to PULS In such a configuration the user has at his disposal the parameters InLo INHI Peri H on and HoFF the lower limit of the range within which a change in the signal source causes a change in the PWM output signal fill factor Below this limit the PWM output signal will have th
78. rolling process the relay output changes his state depends of both SEtP and SEt2 thresholds in similar way as it was described in one threshold mode If two threshold mode is used modE parameter defines state of the relay output when the input value occurs in a particular zone defined by border values of both 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 12 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 6 3 3 PWM Controlling In devices equipped with the OC type output the user can switch this output to the special PULS mode This mode allows the user to adjust the output pulse width Pulse Width Modulation or by means of a source signal defined in the parameter Sour and the parameter settings InLo InHi PE Hon HoFF and AL for the exact description of these parameters see chapter 7 3 1 rEL1 menu PWM allows the user to change the width duration of high and low levels by defining the range of the input signal in InLo and INHi parameters the duration of this signal PEri parameter and the source value Sour parameter The input signal changing within this range
79. s the fuzzy setpoint to the setpoint SEtP This is defined by the HYST parameter Both controllers use the same settings of the fuzzy logic block PID H controll loop 120 100 CE Histeresis setpoint 60 FuZL on 40 FuZL off 20 0 0 20 40 60 80 100 120 140 160 180 200 time Figure 6 7 Comparison of the PID H controller s response to a change in the setpoint using and without the use of fuzzy logic 24 User manual CONTROLLER PUR 94 PID C controll loop 160 140 120 FuZL on FuZL off 100 setpoint 80 60 40 20 NA 0 20 40 60 80 100 120 140 160 180 200 time Figure 6 8 Comparison of the PID C controller s response to a change in the setpoint using and without the use of fuzzy logic The inertial block This is used to smooth the progress of the derivative block response in other words to eliminate overly dynamic changes in the output signal s value caused by the presence of measurement process noise The use of the inertial block lengthens response time but provides protection against over regulation that could lead to failures in the controlled system Dead zone The insertion of this parameter provides the possibility of anesthetising the control system to small deviations in the measured value from the setpoint The dEAd parameter specifies the minimum deviations to which the controller should react The use of the dead zone is justified in systems for which oscillation
80. shielded must be used with RS 485 serial transmission connections n the case of measurement or control signals are longer than 30m or go outside of the building then additional safety circuits are required Inthe case of interference from the power supply side the use of appropriate 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 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 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 AN All connections must be made while power supply is disconnected 11 User manual CONTROLLER PUR 94 Power 24V 5 10 RS 485 supply Imax 100mA GND DATA depending on version uUo DATA n c n c 4 A 1 2 s e 7 e 9 AC R1 optional optional Figure 4 6 Terminals description two relay outputs Power 24V 5 10 RS 485 supply Imax 100mA GND DATA DATA depending on version Uo n c n c A 4 Ce G4 Gere Nc nc EE H a OC2 m U optional p S lol optio
81. single actuator element Once completed the device automatically switches to PiD mode the auto tuning procedure for the PID C loop in an arrangement with a single actuator element Once completed the device automatically switches to PiD mode the setpoint of the controllers The initial state of the controlled object to which the controllers will progress PATH p H tH td H OF H Lo H Hi H PArC p C tlc td C OF C Lo C Hi C 44 PID H control loop coefficients proportional gain factor P integral gain factor I derivative gain factor D value by which control loop limitations are shifted lower limit of the control loop s characteristics upper limit of the control loop s characteristics PID C control loop coefficients proportional gain factor P integral gain factor I derivative gain factor D value by which control loop limitations are shifted lower limit of the control loop s characteristics upper limit of the control loop s characteristics User manual CONTROLLER PUR 94 ConF input settings of the controller dEAd width of the dead zone For the definition of the dead zone see chapter B d Nie znaleziono r d a odwo aniaB d Nie znaleziono r d a odwo ania StAr the parameter expressed in 96 allowing to set the controller s output status a
82. t the time of launch depending on the controller s output parameters dSrC this parameter defines how to interpret the feedback used to calculate the controller s response Err used for calculations is the output of the controlled object following prior calculation of the error at the controllers input and a check on the condition of the controllers operation as a result of dead zone range being exceeded LooP used for calculations is the object s output without calculating the error on the controller s input or taking into account the dead zone InEr the settings of the inertial block For the definition of the inertial element refer to chapter B d Nie znaleziono r d a odwo aniaB d Nie znaleziono r d a odwo ania 27 where Iner response of the inertial block Iner T t successive moments in time T the inertia factor specified by the parameters OFF inertia is disabled The Iner block 1 HArd factor T 0 07 mEdi factor T 0 14 SoFt factor T 0 21 45 User manual CONTROLLER PUR 94 A N innertial block response CH hard 6 medi soft 0 02 04 06 08 1 12 14 16 18 2 seconds Figure 7 3 Responses of the inertial block depending on factor T FUZL an additional fuzzy logic block It enables a smooth change of the setpoint for the 46 soft control of the object SLOP this parameter sp
83. tage will be set to 0 V When the critical situation goes the output signal will be set to value calculated due to formulas given above 7 3 7 CtrL Menu The menu includes configuration options for the control loops of the PID controller featured in the device 43 User manual CONTROLLER PUR 94 Setpoint SEIP setpoint Upper limit Hi H Offset Hi C gt 1 OF H OF C Output Proportional Integral limits Dead zone ea Me Y P H tl H Ap or gt dEAd gt gt gt gt y k Fuzzy P C LC Z Err Derivative Inertial S block block LooP Feedback gt N Hl ner td C Lower limit Lo H Lo C Figure 7 2 General diagram of the PID controller featured in the PUR 94 device modE OFF Pid At F At H At C SEtP operating mode of the controllers the controller is switched off Outputs of control loops are set at idle but all their parameters are available for configuration normal operating mode of the controller the auto tuning procedure for one of the control loops of the controller in an arrangement with two actuator elements Selection of the control loop to be tuned depends on the setting of the SetP parameter Following this procedure the device automatically switches to PiD mode the auto tuning procedure for the PiD H loop in an arrangement with a
84. tch parameters CLUISTTtvpel eee aaa aaa aaa aaa aaa aaa aaa tnn eene nnn entes nennen 34 7 3 MENU DESCRIPTIONY 4 11211211221 7 3 1 rEL1 menu iD TEE 7 3 3 inPt menu common Garameterg eee aaa aaa aaa awake nennt nnns nennt nna 38 7 3 4 inPt menu parameters of temperature inputs 7 3 5 inPt menu parameters of current and voltage inputs E ERGO NUT m M Posts OUE Ip M 7 3 8 bri parameter 7 3 9 HOLd menu 7 3 10 SECu menu 7 3 11 rS menu 7 3 12 Edit parameter 7 3 13 HEES parameter 7 3 14 SErv menu 7 4 MENU STRUCTURE 0 8 THE ALARM LED 111111112112 53 9 OVER CURRENT PROTECTION 53 10 DISPLAYED VALUES CAL CULATION 1 s ccsesecseeseessensessenseeseeseanenssesseesenseasensensenses 53 10 1 ADDITIONAL CALCULATIONS USED CONVERSION CHARACTERISTIC 53 10 1 1 Linear characteristic eee nitent nth than 94 10 1 2 Square Characleristic octies O DRE Ro LE DARE UR ABEL ERA A PKW EAU PEEP 54 10 1 3 Square root character 55 SB 56 60 60 67 68 70 10 1 4 User defined characteristic 10 2 EXAMPLES OF CALCULATIONS s 11 THE MODBUS PROTOCOL HANDLING s1scssssccsssscssssscsssesssssssensssssnscennsnsssnsessnsssnsssssansnsnsansasenenseseess 60 14 1 LIST OF REGISTERS iniret
85. the nominal output 5 0 42 range Hi r Extension of the top of the nominal output range 5 0 42 AL Current output value on critical exception 22 1 mA 43 Passive current output configuration OUtP menu OSou Passive current output signal source InPU 41 Omod Passive current output mode 4 20 mA 42 OUtL Display value for 4 mA current output 0 0 42 OUtH Display value for 20 mA current output 100 0 42 72 User manual CONTROLLER PUR 94 Parameter Description Default value User s value pe Lor Extension of the bottom of the nominal output 5 0 42 range Hi r Extension of the top of the nominal output range 5 0 42 AL Current output value on critical exception 22 1 mA 43 Active voltage output configuration OUtP menu OSou Active voltage output signal source InPU 41 Omod Active voltage output mode 0 10 V 42 OUtL Display value for 0 V 1 V or 2 V voltage output 0 0 42 OUtH Display value for 5 V or 10 V voltage output 100 0 42 Lor Extension of the bottom of the nominal output 5 0 42 range Hir Extension of the top of the nominal output range 5 0 42 AL Voltage output value on critical exception 11 0 V 43 PID regulators configuration CtrL menu modE Operation mode OFF 44 SetP Regulators setpoint 0 0 44 PID H regulator configuration ParH menu 44 P H proportional gain factor P of PID
86. tput Yes R expressed in 0 1 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 D6h i 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 modE parameter in CtrL menu FOh Yes 0 4 0 oFF option 1 opcja Pid option 2 At F option 3 opcja At H option 4 At C option F1h Yes 999 9999 SEtP parameter in CtrL menu no decimal point included F2h Yes 0 9999 P H parameter in PArH menu no decimal point included F3h Yes 0 9999 tl H parameter in PArH menu no decimal point included F4h Yes 0 9999 td H parameter in PArH menu no decimal point included F5h Yes 999 9999 OF H parameter in PArH menu no decimal point included F6h Yes 0 999 Lo H parameter in PArH menu no decimal point included F7h Yes 171000 Hi H parameter in PArH menu no decimal point included F8h Yes 079999 P C parameter in PArC menu no decimal point included F9h Yes 0 9999 tl C parameter in PArC menu no decimal point included 66 User manual CONTROLLER PUR 94 Register Write Range Register description FAh Yes 0 9999 td C param
87. ud 3 9600 baud 4 19200 baud 5 38400 baud 6 57600 baud 7 115200 baud 23h Yes 021 mbAc parameter in rS 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 bit 0 A r1 parameter bit 1 A r2 parameter 24h Yes see descr bit 2 A r3 parameter bit 3 A r4 parameter bit 4 A Pid 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 0 71 AL parameter in bEEP menu 0 off 1 on 29h Yes 0 71 R1 parameter in bEEP menu 0 off 1 on 2Ah Yes 0 1 R2 parameter in bEEP menu 0 off 1 on 61 User manual CONTROLLER PUR 94 Register Write Range Register description 2Bh Yes 0 1 R3 parameter in bEEP menu 0 off 1 on 2Ch Yes 0 1 R4 parameter in bEEP menu 0 off 1 on B bri parameter display brightness 2Dh Yes TER 1 the lowest brightness 8 the highest brightness E Edit parameter numerical parameters edit
88. used for connecting any connecting cables e g as bridges because this can cause damage to the equipment or electric shock User manual CONTROLLER PUR 94 AN If the unit is equipped with housing covers and sealing to protecting against water intrusion pay special attention to their correct tightening or clamping In the case of any doubt consider using additional preventive measures covers roofing seals etc Carelessly executed assembly can increase the risk of electric shock After the installation is completed do not touch the unit s connections when it is switched on because it carries the risk of electrical shock Due to possible significant interference in industrial installations appropriate measures assuring correct operation of the unit must be applied To avoid the unit of improper indications keep recommendations listed below Avoid 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 _ ln the case of magnetically induced interference the use of twisted pair of signal cables is recommended Twisted pair best if
89. value do not exceeds permissible measurement range but displayed value exceeds range 999 9999 the warning Ov is displayed rather than the calculated result 20 User manual CONTROLLER PUR 94 100 C 600 C permissible measurement range i gt a gt a A i Lo message Hi message displayed displayed Figure 6 3 Definitions of measurement ranges in mode Pt100 In the measurement mode and PID mode user can check main thresholds values After pressing or v button name of the threshold e g rEL1 and his value will be displayed on the display in alternating mode If or v will be pressed in 5 sec again the next threshold will be displayed else the device comes back to the measurement mode If a free access is enabled see description of SECu menu user can change the value of particular threshold pressing button ENTER see PARAMETERS EDITION 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 aD Configuration of the device via menu or RS 485 interface does not stop measures 6 1 1 detection OF THE PEAK VALUES The PUR 94 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
90. version 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 In 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 calculated 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 an
91. 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 o i Ro 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 C and inverted Lo C gt Hi C characteristic 54 User manual CONTROLLER PUR 94 10 1 3 Square root characteristic The normalized result is rooted and further con
92. word can be restored by Service Division only Ar1 Ar4 this option permits user on or prohibits oFF to modify the thresholds of the relays LEDs R1 R4 without knowledge about user password APid this option enables one to permit on or prohibit oFF modification of the controller s setpoint in measurement mode without knowing the user password 7 3 11 rS menu This menu is connected with RS 485 interface and sets his properties Addr this parameter defines the address of the device accordingly to Modbus protocol It can be set in range from 0 to 199 If the value O is set then device responds to frames with address 255 FFh bAud this parameter determines RS 485 interface baud rate It can be set to one of 8 possible values 1 2 2 4 4 8 9 6 19 2 38 4 57 6 115 2 which respond to the baud rates of 1200 2400 4800 9600 19200 38400 57600 and 115200 bit s respectively mbAc this parameter sets the access to the configuration registers of the device Possible values on configuration registers can be set via RS 485 interface oFF configuration registers can not be set via RS 485 interface 48 User manual CONTROLLER PUR 94 The access to registers no 04h and 05h cant be denied by mbAc parameter see D LIST OF REGISTERS mbtO this parameter defines maximal time sec between following frames received by the device If the delay will be greate
93. xceeded 37 User manual CONTROLLER PUR 94 H 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 r1 if this parameter is set to on activation of relay R1 causes by acoustic signal r2 if this parameter is set to on activation of relay R2 causes by acoustic signal r3 if this parameter is set to on activation of relay R3 causes by acoustic signal r4 if this parameter is set to on activation of relay R4 causes by acoustic signal Acoustic signal turned on by e g relay can be turned off by pressing of any button 7 3 3 inPt menu common parameters This menu presets the measurement input tYPE type of the input sensor This parameter can be set to values 0 20 current input range 0 20 mA 4 20 current input range 4 20 mA 0
94. y 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 11 a d e Similarly the relay will be turned off if time toFF elapse since the input signal value exceeds any of the border values see points Borr Dorr Figure 6 11 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 11 a d e 28 User manual CONTROLLER PUR 94 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 11 a The parameter AL allow user to set the relay output behaviour in critical situations e g input values exceeds permissible measurement range User can select that the relays will be turned on turned off or not changed in critical situations All parameters connected with relay outputs are described in paragraph rEL1 menu 6 3 2 Two thresholds mode displayed value t t t t t 4 i zone B a Zona SEtP or SEt2 parameter NAN Y HYSt parameter zone B l i Li MEE E bod RE rom NECI EE NEN ime b relay state E MEM I d i poi

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