Home

Proportional Directional Control Valve PRM7 - ARGO

1. 16 RS NP N 17 7 4 COMMUNICATION WITH THE VALVE ELECTRONICS esee nennen nnt nnne 17 7 3 1 Communication eerie dg etie int etg eaae 17 7 4 2 Communication Establishment 18 7 4 3 Uploading Data from the Valve Electronics eese en nen eene rennen 19 7 4 4 Downloading Data to the Valve Electronics eese eene nennen rennen 19 7 4 5 Status of the Valve Electronics eese eene 19 7 4 6 Reset of the Valve Electronics eese eene eene nennen rennen nennen eren rennen 20 7 5 POSSIBILITIES OF SETTING THE VALVE ELECTRONICS PARAMETERS 20 7 1 AG DC pL 20 7 5 2 Block Diagrams ao SST ee eee eee 21 7 5 3 Setting According to the Ordering Code eese nennen 21 7 5 3 Setting from a Prepared Configuration File essent nennen 23 7 6 BLOCK DIAGRAMS AND TABLES OF PARAMETERS OF BASIC CONFIGURATIONS cce 24 ARGOEN i ESHYTOS 7 6 T Configuration ten n Um e metit eins 24 7 6 2 Confiourdtion 4 eo Sele eee Ba amate pte a i E 26 7 6 3 Confiourdtion ao ie fv e RETO utet aid asia ae aie 28 TOA Configurdtion EOASUT tU ama i ERE 30 7 7 BASIC CONFIGURATION BLOCKS DETAILED DESCR
2. fe EM tape MZ nen Zips p ep ep Hi a 0 Figure 30 Configuration E04S01 block diagram with solenoid coils on side A and B Here is the list of parameters of the valve electronics which are set for this configuration Nd t umbo Brief description of the function This parameter sets the type of the command signal The command signal can be voltage or current unipolar or bipolar Command signal Command signal polarity This parameter changes the command signal polarity This parameter defines the threshold of the command signal Threshold below which the command signal is ignored Its main purpose is to suppress a signal noise around command signal zero This parameter sets the time within the signal behind the ramp Ramp up function increase from 096 to 10096 at 10096 step increase of the entering signal This parameter sets the time within the signal behind the ramp Ramp down function decrease from 10096 to 096 at 10096 step decrease of the entering signal 8 This parameter limits the maximum output current to the AA PAJA PLL Current limiting coil A coil A This parameter limits the maximum output current to the Current limiting coil B coil B This parameter sets the amplitude range of the coil excitation current superposed on its DC component This has a significant i
3. External feedback signal linearization activation External feedback signal linearization definition T11 mr 7 Description It appears in configurations 02501 E03 E04S01 Linearization activation of internal or external feedback causes that the signal from the position sensor eventually external sensor is processed with a help of linearization functions The linearization function enables to define 9 node points The coordinates of the node points are entered in percentage see Figure 32 The linearization functions usage can be advantageous in cases when it is necessary to change a natural form of the functional dependence between the command signal and the output quantity flow rate position pressure force speed etc In configuration E02S01 the linearization function can be used for a compensation of naturally non linear proportional directional control valve flow rate characteristics In configurations E03 and E04S01 the linearization function enables to solve tasks when it is necessary to compensate non linearities of kinematic systems given by construction when using asymmetric cylinders etc In specific cases the linearization function can be used also for dead band compensation in systems with internal and external feedback configuration E04S01 Example External feedback signal processing by means of a linearization function Xn Yn define the linearization function point Signal before linearization block L
4. Proportional Directional Control Valve PRM7 User Manual ARGO HYTOS s r o Vrchlabi Fluid amp Moition Control Table of Contents TABLE LG OMEN OM Dc 1 1 GENERAL INFORMATION P 3 BUS INTRODUCTION m 3 1 2 ESERIBERYXCIMP 3 1 3 OMITED WARRANTY rororo 3 14 USED SYMBOLS T 4 AS CAUTION CP 4 1 6 SERVICE MAINTENANCE REPAIR 5 1 7 SETIN G A M N 5 2 TECHNICAL DESCRIPTION 5 2 S V 5 2 2 TECHNICAL PARAMETERS 6 7 3 1 CONFIGURATION E01 DIRECTLY OPERATED PROPORTIONAL DIRECTIONAL CONTROL 7 3 2 CONFIGURATION E02S01 PROPORTIONAL DIRECTIONAL CONTROL VALVE WITH INTERNAL SPOOL POSITION FEEDBACK EUR S Ee eR Soa EORR CR ENS NEA omm ri 7 3 3 CONFIGURATION E03 PROPORTIONAL DIRECTIONAL CONTROL VALVE WITH EXTERNAL F
5. Real value input 2 pe 0 10V 0 20mA PWM 4 20 33A 18 kHz resolution 12 Bit Figure 14 Valve digital electronics block diagram The digital integrated electronics see figure 14 is controlled by an internal program firmware which is stored in a Flash memory This program provides basic electronics functions so that the valve can fulfill the user s requirements The producer does not exclude a possibility of a continuous firmware update with the view of the directional control valves PRM7 functional properties optimization The valve electronics is connected to the PC with the help of serial interface RS232 Two lines are used for the connection from this interface RxD enabling the data acceptance from the electronics and TxD enabling data entry to the electronics Basic baud parameters are baud rate 19 200 bps 8 data bits no parity 1 stop bit 6 2 Setting of the Electronics Parameters Digital integrated electronics operation parameters are set from the production so that they provide the optimal valve function in terms of its operational configuration and its static and dynamic properties In case that this operational parameters setting will not comply with a particular valve application it is possible to change the setting with the help of a PC which is connected with the proportional directional control valve by means of a special cable through the connection port RS232
6. The measurement dialog box differs according to the chosen configuration Regardless of the chosen configuration the measurement of the command signal and currents to the valve coils is always performed If a configuration with the feedback is chosen the signals that help with the feedback setting are shown as well The measurement dialog box see Figure 34 is accessible from any point of the program The dialog box can be activated e by menu item Display gt Measurement e or by toolbar button Measurement is Im Mode online Firmware V 30 05 Configuration 02501 intemal spool postion feedback C data E02S01 pern_ Measurement internal spool position feedback Command signal Desired value of internal feedback Internal feedback Lag error of internal feedback Current coil A Current coil ation 02501 intemal of a measurement dialog box in configuration 02501 C data E02S01 Figure 34 An example ARGO 42
7. This parameter activates the external feedback linearization Activation of external The linearization function is used for definition of the required feedback linearization functional relation between its input and output of the external signal feedback Linearization point Xn This parameter allows defining 9 linearization points The of external feedback linearization function is used for definition of the required Linearization point Yn functional relation between its input and output of the external of external feedback signal feedback This parameter enables to change the configuration of the valve electronics The block symbol is used only for configuration with coils on side A and B Directional valve configuration This parameter enables to change the configuration of the valve electronics The block symbol is used only for configuration with one coil on side A resp side B Measurement point ARGOEN EE HYTOS 29 Directional valve configuration 7 6 4 Configuration E04S01 Configuration E04S01 proportional directional control valve with internal spool position feedback and external feedback is available in 3 modifications Solenoid coils located on side A and B of the valve solenoid coil located on side A only solenoid coil on side B only The valve block diagram with solenoid coils on side A and B is shown in Figure 30 For this configuration modifications with one solenoid coil the block diagram is similar
8. After the agreement with the producer the hardware and software needed is supplied together with the valve ARGOME EE 7 Configuration Program PRM7Conf 7 1 Basic Description The program PRM7Conf is designed only for the proportional directional control valves digital electronics operational parameters modification Its basic features are e Minimum requirements for hardware are Processor Pentium 433 MHz Memory RAM 32 MB Free HD space 20MB Minimal screen resolution 800x600dpi Operating system Windows 98 ME 2000 XP e t enables electronics setting by means of the graphic interface in the form of tables or block diagrams e It enables to save the operational parameters setting to PRM file e enables to carry out the electronics operational parameters setting with the help of ordering code that is listed in the producer s catalogue e t enables two operational modes on line and off line e lt enables signal measuring behind the chosen blocks which set the electronics parameters 7 2 Installation For installation start the setup exe file from the enclosed CD This will activate the installer that will lead you through all the installation process Installer will download all the necessary program files to locations defined during the installation After completing the installation start the program by PRM7Cont exe file which is located a directory selected by you or start the prog
9. Some of them result from physics experiments e g Ziegler s and Nichols s methods some result from the mathematical formulae e g various methods based on integral criteria These methods can be learned from any technical literature on control systems Here the controller setting method which can be applied in operation conditions is introduced The criterion of this method is reaching of the maximum proportional integration constants at the fastest transient performance and retaining the pre set control circuit closed loop transient characteristic curve e g maximum limited sustained value overshoot e Zero constant of integration zero derivative constant D and zero time constant of the derivative component T is set on the controller first The proportional constant P is set to some small value e After the controlled system stabilization a small control step is set and the feedback is monitored at the same time The controller should have a tendency to decrease the initial control deviation If a decreasing does not occur there is a possibility of a wrong feedback setting polarity or signal ranges e fthe negative feedback is set it is necessary to repeat the reference input steps at the permanent increasing of the proportional constant P so that a visible overshoot occurs At this moment it is necessary to return the proportional constant P to the value at which the overshoot does not occur too much e Now the increasing of the i
10. This influences the current to coil B Command signal gain coil B Dead band compensation coil A This parameter defines the step change of the current to the coil A to compensate the positive overlap of the valve spool Dead band compensation coil B This parameter defines the step change of the current to the coil B to compensate the positive overlap of the valve spool This parameter limits the maximum output current to the Current limiting coil A coil A This parameter limits the maximum output current to the Current limiting coil B coil B This parameter sets the amplitude range of the coil excitation current superposed on its DC component This has a significant influence on hysteresis and sensitivity of the proportional valve The setting is done experimentally This parameter sets the freguency range of the coil excitation current superposed on its DC component This has a significant influence on hysteresis and sensitivity of the proportional valve The setting is done experimentally Dither amplitude Dither freguency This parameter sets the P component of the internal feedback controller P parameter of internal feedback controller This parameter sets the component of the internal feedback controller parameter of internal feedback controller D parameter the parameter sets the derivative component of the internal feedback controll
11. change Ji X T A A schematic symbol example P Figure 3 Proportional directional control valve with two coils in configuration 02501 spool position feedback 7 3 3 Configuration E03 proportional directional control valve with external feedback The proportional directional control valve in the configuration E03 external feedback see Figure 4 can be used according to the measured physical quantity for the oil flow direction and flow rate control position or speed rate control eventually pressure control force or torque control A schematic symbol example PJ Figure 4 Proportional directional control valve in configuration E03 external feedback 3 4 Configuration E04S01 proportional directional control valve with internal spool position feedback and external feedback The proportional directional control valve in the configuration E04S01 spool position feedback and external feedback see Figure 5 can be used according to the measured physical quantity for the oil flow direction and flow rate control position or speed control eventually pressure control force or torque control The presence of the internal feedback enables to a certain extent to influence the dynamic behavior of the proportional directional control valve with
12. in Figure 29 For this configuration modifications with one solenoid coil the block diagram is similar E EL EE NEN a we tae ee mai E K zz Figure 29 Configuration E03 block diagram with solenoid coils on side and a Here is the list of parameters of the valve electronics which are set for this configuration Name in the Block i parameters table Brief description of the function This parameter sets the type of the command signal The Command signal i command signal can be voltage or current unipolar or bipolar Command signal polarity This parameter changes the command signal polarity This parameter defines the threshold of the command signal Threshold below which the command signal is ignored The main purpose is to suppress a signal noise around command signal zero This parameter sets the time within the signal behind the ramp Ramp up function increase from 0 to 100 at 100 step increase of the entering signal This parameter sets the time within the signal behind the ramp Ramp down function decrease from 100 to 0 at 100 step decrease of the entering signal Current limiting coil A This parameter limits the maximum output current to the coil A Current limiting coil B This parameter limits the maximum output current to the coil ARGOEN m This parameter sets the amplitude range of t
13. seven poles connector M23 shown in Figure 7 M23 connector is not a part of supply and it is necessary to order it separately according to the producer s catalogue The significance of individual contacts is in the Figure 8 showing the connector situated on the electronics box Figure 7 Connecting connector M23 M23 Pin 1 Power supply 11 2 28V DC Pin 2 GND power Pin 3 Command Pin4 GND signal Pin5 Reference voltage 10 V DC Pin 6 Spool position sensor signal copy Pin 7 Protective earth conductor PE Figure 8 Connecting connector M23 positioned on the electronics box The command signal input resistance e Voltage signals 200 10V 0 10V e Current signals 255 Q 10 4 20mA 0 20mA 12 8 mA ARGOEN 5 2 Connection of a Cable for Electronics Parameters Setting Connecting of the computer to the valve electronics is performed by means of a special cable see Figure 9 The cable is equipped with a four pole connector M12 for the connection to the valve and a nine pin connector CANNON 9 for the connection to the computer RS232 serial port The cable is not a part of supply and is to be ordered separately according to the producer s catalogue The significance of individual contacts is in the Figure 10 showing the connector situated on the electronics box Figure 9 The cable designed for the connection of the proportional directional
14. 13 are situated the green and red LEDs After connecting the supply voltage the green LED which signals the electric voltage presence lights up The flashing red LED signals an electronics error state The error state reasons can be following e Disconnected connection of the electronics output with the solenoid coil e The current command signal is out of the specified range if there is a set command signal 4 20 mA or 12 8 mA e current external feedback signal is out of the specified range if there is a set command signal 4 20 mA The permanent red LED light signals an internal software problem After the error eliminating the electronics can be activated again via disconnecting the supply voltage for a short moment or via electronics reset from the program PRM7Conf see the chapter 7 Green LED Red LED 100001 card for peoporditeal valves Figure 13 Operation state signaling ARGOEN HYTOS 6 Digital Integrated Electronics 6 1 Electronics Block Diagram Green LED Red LED supply voltage error state As 7 Reference voltage 10V Extemal feedback sensor supply Uc Required value input C 10V 4 20mA 0 10V 0 20 mA 10 12 8 resolution 12 Bit Spool position signal Real value input 1 T 254 25V resolution 12 Bit Signal extem
15. 24V si Directional valve configuration 01 drect operated proporcional valve 02501 internal spool position feedback E03 extemal feedback 04501 internal and external feedback Nominal flow rate Assembled ordering code Mode ondne Firmware V 30 05 Configuration E02501 internal spool position feedback C data E 02501 Figure 23 Setting according to the ordering code ordering code type number serial number Figure 24 An example of a name plate of a proportional directional control valve ARGOEN 55 7 5 3 Setting from Prepared Configuration File Configuration files PRM files are used for storing the valve electronics settings The stored files can be used later for easy setting of other directional control valve electronics or for re writing incorrect data back to the initial setting The configuration file with the required setting of the valve electronics can be loaded to the program PRM7Conf by menu item File gt Open e or by toolbar button Read data from file In the shown dialog box see Figure 25 it is possible to choose a required PRM file In on line mode the data from the configuration file can be directly written into the valve electronics The setting of the valve electronics can be saved from the program PRM7Conf to a configuration file PRM file by menu item File gt Save e or by toolbar button Save dat
16. 3 Two cascade ranged PID controllers are used in configuration E04S01 General mathematical description of controllers General mathematical description of controllers of the internal and external feedback results from the equation de t T u t Pe t If e t dt D i dt du t dt in which e t is the lag error u t is the controller output signal and is time Parameters P s D s T s represent the controller individual adjustable parameters ARGOEN m The controller individual components significance e proportional component P e t It amplifies the lag error When used separately it works with the permanent lag error f e The integral component I edt It integrates the lag error In closed control circuit it works with 0 a transient lag error the control process gets settled if the lag error is zero If it is used separately it does not satisfy the stability conditions for the astatic systems e g hydraulic motor position control de t e The derivative component a It derives the lag error It cannot operate separately ina t closed control loop because it allows a stable control deviation of any size In combination with P and controller components it improves the control loop stability du t e The delaying component r2 It changes the controller dynamic properties t Setting of controllers There are several setting methods of the controllers
17. Cunent imiting coil B 38 Linearization point X9 of internal feedback 39 Linearization point of internal feedback Mode ondine _ Firmware V 30 05 Configuration 02501 intemal spool position feedback CNdalaNEQ2SO1 pim Figure 22 An example of a parameters table in Figure 23 An example of a block diagram in configuration 02501 configuration 02501 7 5 3 Setting According to the Ordering Code If it is necessary to change the valve configuration or if it is necessary to put the valve in service quickly in case of original configuration data loss the data predefined by the producer can be loaded into the valve electronics These predefined data can be established via specification of the valve according to the ordering code For this purpose the dialog box Valve configuration according to the ordering code is used Explanations of the ordering code individual markings are in the sale catalogue The dialog box Valve configuration according to the ordering code see Figure 23 is displayed e by menu item Valve gt Configuration change e or by toolbar button Configuration change By selection of the items offered by the dialog box it is possible to assemble a marking according to the ordering code to which the new valve setting relates ARGOEN 21 Proportional directional control valve PRM7 user interface Valve configuration according to an ordering code Nominal power supply voltage C 12V C
18. EEDBACK 8 3 4 CONFIGURATION E04S01 PROPORTIONAL DIRECTIONAL CONTROL VALVE WITH INTERNAL SPOOL POSITION FEEDBACK AND EXTERNAL FEEDBACK esses eene 8 4 VALVE ASSEMBLY e 8 5 ELECTRICAL CONNECTION 9 5 1 CONNECTION OF POWER SUPPLY AND COMMAND SIGNAL TO THE VALVE ELECTRONICS eene 9 5 2 CONNECTION OF A CABLE FOR ELECTRONICS PARAMETERS SETTING sese 10 5 3 CONNECTION OF THE EXTERNAL FEEDBACK CABLE esee 10 5 4 PUTTING INTO OPERATION ee epe Hie EY 11 6 DIGITAL INTEGRATED ELECTRONIJDGCS eee eee eere ee eere e eene eene seen o se ena stans se 12 6 1 ELECTRONICS BEOCK DIAGRAM 5 AE Spe E EEE INL 12 6 2 SETTING OF THE ELECTRONICS PARAMETERS esee etes sanas 12 7 CONFIGURATION PROGRAM PRM7CONBP ccssscssssscssssssscccssssssscssssssssscscssssssscssssssssscssssssssssssssssssses 13 TAs BASIC DESCRIPTION E 13 T2 INSEADEATION seti ertet tiec edere coc eres 13 1 3 USER INTERFACE corer aenea edere see dese ud 13 Fe WEN mV E 14 7 32 E 15 VA SAUS
19. IPTION ee e nen nennen 33 7 7 1 Directional Valve Configuration eese a a 33 7 7 2 Command Signal Type Selection etes etie ete artnet iate tai et Ie ee beta nio cona 33 7 7 3 Command Signal Polarity Ie tiec teet eade e eate aet e sete e Tides 34 VPE NEU TT EE 34 7 7 3 Ramp Functions eire bte te ER te E ecu da 34 7 7 6 Command Signal iet ee tene nee oed e e a ace eet se IER Rd pe o necu Dn 35 7 7 7 Dead Compensation eie iie esee eere 36 7 7 8 Current Limiting oe ee e UAE ERE D a 36 PL9 Dithe 37 7 7 10 Internal and External Feedback Controllers eene nennen 37 7 7 11 Type of External Feedback Signal esee eene nennen nen nennen rennen 39 7 7 12 External Feedback Signal Polarity sese nen nennen rennen 39 7 7 13 External Feedback Signal Offset ntm teet tet EN E E 39 7 7 14 External Feedback Signal Gain eei eee tte t teer tte rte oben EEE 39 VOUS UNS E TITATE TIL ITO OE 41 7 8 MEASUREMENT 42 ARGOME 1 General Information 1 1 Introduction The proportional directional control valve 7 consists of a cast iron body a special cylindrical spool two centering springs with supporting washers one or two proportional solenoid
20. If the feedback linearization function is non active the signal output behind blocks of External feedback signal polarity External feedback signal offset External feedback signal gain represents the input into the controller differential component An example of the external feedback setting It is required that the input signal to the differential component is 80 for the 0 signal coming out of the external feedback sensor At the same time it is required that the input signal to the differential component is 0 for 100 signal coming out of the external feedback sensor The assumption is that the external feedback linearization function is non active The graphical presentation gathering the set parameters serves fulfilling the above mentioned requirements The resulting setting is as follows see Figure 31 Offset 99 99 Gain 0 8 Polarity negative External feedback gain polarity and offset Output Offset Gain 100 80 100 4 60 50 40 20 D 2 0 50 co 20 Te 40 100 s 60 99 99 0 80 80 Polarity 100 0 10 20 30 40 50 60 70 80 30 100 Input put 76 C oi Cancel OK negative Figure 31 External feedback dialog box gain polarity offset an example of an external feedback setting positive ARGOEN m HYTOS 7 7 15 Linearization Function Blocks symbols Internal feedback signal linearization activation External feedback signal linearization definition
21. RM file e Save as The item enables to save PRM file under a different name e Print The item enables to print the electronics parameters out which are set for the chosen configuration e Exit The item enables to quit working with the program PRM7Conf Edit This menu enables easy text transfer between the table cells or edit boxes of the dialog windows The items of the menu Edit are e Cut The item enables to cut text from a table cell or from an edit box The item enables to copy text from a table cell e Paste The item enables to insert cut text or copied text into the cell Display This menu enables a suitable choice of the environment display of the desktop for editing the valve electronics parameters The program provides two ways of electronics settings through a block diagram or through a parameters table The block diagram is a graphical representation of various functions blocks of the valve electronics The parameters table displays all the parameters en bloc and eventually it enables their modification The items of the menu Display are e Block diagram The item enables to display the block diagram of the chosen configuration e Parameters table The item enables to display parameters table of a chosen configuration e Measurement The item enables to measure signals the specific nod points of the valve electronics given by its structure Directional valve This menu contains program func
22. X X X X X X X X X OFF X X X X X X X X X X 1 X X X X X X X X Table 3 Allowed command signals for given configurations 7 7 4 Threshold Block symbol zt Description It appears in all configurations The threshold sets the valve non sensitivity around the command signal zero value The threshold extent is expressed in percents of one polarity command signal maximum After the setting the valve does not react to command signal changes which are less than the set threshold limit For command signal values higher than the set threshold limit the signal correspondent to input is output The function can be used in all valve configurations for attenuation of the command signal unwanted ripple around zero value so that the valve ignores it to the command signal set level Example The command signal 10V the threshold setting 10 If there is a signal in the range 1V 1V in the command input the valve does not respond to this signal 7 7 5 Ramp Functions Blocks symbols X E Description of function in configuration E01 E2S01 Ramp up coil A respectively ramp up coil B sets the command signal gradual increase According to polarity of the signal entering to ramp functions the setting takes effect in the gradual increase of the current for the solenoid coil A respectively for the solenoid coil B The ramp up coil A is active for positive polarity the ramp up coil B is active fo
23. a to file In the shown dialog box see Figure 26 the user can name or re name the configuration file Look in deta Save in date 5 02501 5 8 02501 Recent Documents 3 Fle name EG2501 prm E My Network Fle name EG2501 pm Places of type Configuration file of directional valve prm Save as type Configuration file of directional valve Figure 25 File opening Figure 26 File saving HYTOS 23 7 6 Block Diagrams and Tables of Parameters of Basic Configurations 7 6 1 Configuration E01 Configuration E01 directly operated proportional directional control valve without feedback is available in 3 modifications Solenoid coil located on side A and B of the valve solenoid coil located on side A only solenoid coil on side B only The valve block diagram with solenoid coils on side A and B is shown in Figure 27 For this configuration modifications with one solenoid coil the block diagram is similar WH 08 28 88 mo 4 f zu Wu EMO ri Figure 27 Configuration E01 block diagram with solenoid coils on side A and B Here is the list of parameters of the valve electronics which are set for this configuration Name in the Bleck Brief description of the function parameters table symbol This parameter sets the type of the command signal The command signal can be voltage or current unipolar
24. al control valve through the serial interface RS 232 Factory configuration of the proportional directional control valve depends on its type of construction The configuration with the external feedback has to be consulted with the producer 1 2 Valves Usage Proportional directional control valves with digital integrated electronics are available in following configurations see catalogue for more details e E01 directly operated proportional directional control valve without a feedback e 02501 proportional directional control valve with internal spool position feedback e E03 proportional directional control valve with external feedback e E04S01 proportional directional control valve with internal spool position feedback and external feedback In configurations E01 and E02S01 the proportional directional control valves can be used for the direction and flow rate control position or speed control In configurations E03 and E04S01 they can be used according to the kind of the scanned physical quantity for the direction and flow rate control position or motion speed eventually for pressure control force or torque 1 3 Limited Warranty The proportional directional control valves operation at any device must be performed in accordance with recommendations of the producer ARGO HYTOS s r o and safety or other regulations given by the particular country legislature The producer takes no responsibility for health or property
25. and E02S01 Dead band compensation coil A respectively Dead band compensation coil B enables to compensate the proportional directional control valve spool positive overlap The aim of the dead band compensation is to minimize the proportional directional control valve neutral zone around the command signal zero value The spool positive overlap enables to ensure a full flow closure of the valve in the centre position by technologically advantageous production tolerances In the immediate vicinity of the zero value of the signal entering the particular compensation block the compensation setting comes out according to the signal polarity by the current step flowing to the solenoid coil or B The Dead band compensation coil A is active for the positive polarity the Dead band compensation coil B is active for the negative polarity Example of setting in configuration E01 The Dead band compensation in configuration E01 is expressed in mA If the signal entering to the block gains positive value the Threshold is set to 0 the Dead band compensation coil A is set to 100mA then in the command signal immediate vicinity the solenoid coil will be excited by 100mA current Example of setting in configuration 02501 The Dead band compensation in configuration 02501 is expressed in percentage of the command signal maximum If the signal entering to the block is positive the Threshold is set to 0 the Dead band compensation coil A
26. asons of the failure could be e disconnected or damaged communication cable of the PC RS232 serial interface e switched off or damaged power supply the status of electronics power supply is signalized by green LED e damaged proportional directional control valve electronics If there is a requirement to establish connection to the valve electronics to turnover into on line mode immediately after the start of the program it is necessary to make a particular setting in the Communication Setting dialog box see Figure 20 The Communication Setting dialog box is displayed when the menu item Communication gt Setting is selected The setting is done by option on line in the Mode at start group The change will be active after re start of the program Proportional directional control valve PRM7 user interface Communication setting Communication port i Mode off ine Firmware V 30 05 Configuration 02501 internal spool position feedback C dataXE 02501 pm Figure 20 Mode at start setting ARGOEN 7 4 3 Uploading Data from the Valve Electronics Uploading data from the valve electronics to the program PRM7Conf is possible to be realized by menu item Valve gt Upload data e or by toolbar button Upload data from valve The program also enables to upload data from the valve electronics automatically at the start of the program This function is activated in case the mode at start is set to on
27. ata from the valve electronics The function of the button is the same as the function of the menu item Valve gt Upload data 45 Download data to valve This button enables to download data to the valve electronics The function of the button is the same as the function of the menu item Valve Download data IE Configuration change This button enables to change the valve electronics configuration The function of the button is the same as the function of the menu item Valve gt Configuration change Block diagram This button enables to switch the program desktop to the mode of directional control valve electronics setting via the block diagram The function of the button is the same as the function of the menu item Valve gt Block diagram EB Parameters table This button enables to switch the program desktop to the mode of directional control valve electronics setting via the block diagram The function of the button is the same as the function of the menu item Display Parameters table Measurement This button enables to switch the program desktop to the mode of measurement The function of the button is the same as the function of the menu item Display gt Measurement Reset This button enables the reset of the valve electronics The function of the button is the same as the function of the menu item Communication gt Reset B On line This button enables to switch over the program modes between on line a
28. between the proportional directional control valve moving parts is reached With a help of dither the proportional directional control valve functional properties can be improved dramatically in the sense of hysteresis decreasing and increasing of sensitivity to command signal changes This function finds the biggest use especially in configuration E01 directly operated valve Dither setting A wrong dither setting can result in a substantially undesirable valve spool vibrating and by this the whole hydraulic circuit Its optimal setting differs on a case by case basis Commonly the setting is made in a frequency range from 60 Hz to 160 Hz for the parameter amplitude range 10 to 30 Dither parameters are optimized so that the required hysteresis value is reached and the setting does not cause any undesired oscillations in the hydraulic circuit at the same time 7 7 10 Internal and External Feedback Controllers Blocks symbols P parameter of internal parameter of internal D parameter of internal feedback controller feedback controller feedback controller P parameter of external parameter of external D parameter of external feedback controller feedback controller feedback controller 4 M The blocks are used for definition of parameters of PID controllers There are two control circuits built in the control electronics Controllers are in configurations E02S01 E03 E04S01 One PID controller is used in configuration 02501 and E0
29. command signal zero This parameter sets the time within the signal behind the ramp function increase from 096 to 10096 at 10096 step increase of the entering signal The current to the coil A is directly proportional to the signal increase behind this ramp This parameter sets the time within the signal behind the ramp function increase from 096 to 10096 at 10096 step increase of the entering signal The current to the coil B is directly proportional to the signal increase behind this ramp This parameter sets the time within the signal behind the ramp function decrease from 10096 to 096 at 10096 step decrease of the entering signal The current to the coil A is directly proportional to the signal decrease behind this ramp This parameter sets the time within the signal behind the ramp function decrease from 10096 to 096 at 10096 step decrease of the entering signal The current to the coil B is directly proportional to the signal decrease behind this ramp Threshold Ramp up coil A E XI Ramp up coil B Ramp down coil A Ramp down coil B This parameter defines the transfer relation between the command signal and the spool position signal required This influences the current to coil A Command signal gain coil A 56 This parameter defines the transfer relation between the command signal and the spool position signal required
30. control valve PRM7 to PC M12 Pin 1 Programming TxD line of serial interface RS232 Pin 2 Programming RxD line of serial interface RS232 Pin 3 Programming earth Pin 4 Not used Figure 10 Connector M12 designed for the connection to PC positioned on the electronics box 5 3 Connection of the External Feedback Cable Connection of the external feedback for configurations E03 and E04S01 only will be performed with the help of a five pin connector M12 which is in Figure 11 Except of connecting the signal from the external feedback the connector enables a connection of supply voltage for an external sensor as well M23 connector is not a part of supply and it is to be ordered separately according to the producer s catalogue The significance of individual contacts is in the Figure 12 showing the connector situated on the electronics box Figure 11 External feedback cable connecting connector M12 Socket 1 m supply of the external feedback sensor 11 2 28 M12 Socket 2 External feedback signal sensor output O4 600 Socket 3 Earth Socket 4 Not used Socket 5 Not used Figure 12 External feedback cable connecting connector M12 ARGOME External feedback signal sensor output e Voltage signals 200 0 10V e Current signals 2550 4 20mA 0 20mA 5 4 Putting into Operation On the upper part of the electronics box see Figure
31. d to the producer s address or to the trade representation address In case of a claim it is necessary to deliver the type number and the serial number These data will push the claim forward and ensure the fast and reliable repair In case of detecting a defect or a failure your seller will be happy to give you a phone or a written advice We offer experienced and skilled experts for repairs and the maintenance 1 7 Basic Setting Proportional directional control valves are ready for instant use from the producer The directional control valve digital electronics basic setting is made by the producer In configurations E01 and E02S01 the directional control valve is fully functional and there is no need for any interference into the electronics setting In configurations E03 and E04S01 it is necessary to set the electronics parameters which ensure the correct function of the directional control valve in the external feedback 2 Technical Description 2 1 Basic Parts Figure 1 shows the proportional directional control valve PRM7 and its basic parts The directional control valve consists of e the body with the inserted spool 1 e proportional solenoids 2 e the spool position sensor 3 e the control digital electronics 4 Figure 1 Basic parts of the proportional directional control valve lay out of configuration E04S01 Basic parts are the same for all configurations offered by the producer but their a
32. damages caused by operating the hydraulic or other systems equipped with the proportional directional control valve made by ARGO HYTOS s r o In case of not observing the rules wrong manipulation false interpretation or misunderstanding the responsibility and liability remains on the user ARGOME 8 1 4 Used Symbols 1 5 Caution The directional control valve can be installed and put into operation only by a trained and authorized person When using the control valves in applications with high safety requirements it is necessary to take a measure for the case of a failure which disconnects the power supply voltage eventually the valve command signal The directional control valve then returns back to the central position automatically When installing a directional control valve it is necessary to comply with schedule and fulfillment of the individual works Before putting into operation it is necessary to test all electrical and hydraulic connections once more To prevent collisions before putting into operation all the safety equipment must be functional It is necessary to observe all the safety rules 1 6 Service Maintenance Repairs Do not try to repair the proportional directional control valve on your own After a repair particular settings must be made which can be accomplished only by a qualified person Send the directional control valves which has to be repaire
33. ehaves as if the external feedback sensor signal was disconnected 7 7 13 External Feedback Signal Offset Block symbol External feedback signal offset 2 Description It appears in configurations E03 604501 It sets the external feedback signal offset which is performed in percentage of the external feedback sensor signal range Example The external feedback signal type is voltage with 0 10V level The signal coming out of the external feedback sensor is 2V The signal offset is set to 20 On the external feedback signal offset block outlet there will be the 0 output signal for this value of a feedback signal 7 7 14 External Feedback Signal Gain Block symbol External feedback signal gain 4 Description It is used for reaching of the external feedback signal gain required value Example The signal entering the gain block is 10 The gain is set to 2 Then the signal flowing out from the gain block will be 20 ARGOME ag The external feedback setting in configuration E03 E04S01 Setting functions External feedback signal polarity External feedback signal offset External feedback signal gain are gathered into one dialog box in the block diagram for the external feedback The diagram which is shown after activating by means of one of the blocks described see Figure 31 shows the signal transformation from the external feedback sensor after its passing through these blocks
34. er T parameter the parameter modifies dynamic behavior of the internal feedback controller causes delay D parameter of internal feedback controller T parameter of internal feedback controller This parameter activates the internal feedback linearization The linearization function is used for modification of the natural status of the valve flow rate characteristics Activation of internal feedback linearization Linearization point Xn of internal feedback Linearization point Yn of internal feedback This parameter allows defining 9 linearization points The linearization function is used for modification of the natural status of the valve flow rate characteristics This parameter enables to change the configuration of the valve electronics The block symbol is used only for configuration with coils on side A and B Directional valve configuration This parameter enables to change the configuration of the valve electronics The block symbol is used only for configuration with one coil on side A resp side B Measurement point Directional valve configuration I EE ARGOEN 3 ER HYTOS 7 6 3 Configuration E03 Configuration E03 proportional directional control valve with external feedback is available in 3 modifications Solenoid coils located on side A and B of the valve solenoid coil located on side A only solenoid coil on side B only The valve block diagram with solenoid coils on side A and B is shown
35. from 50 to 50 for 5s 7 7 6 Command Signal Gain Blocks symbols Command signal gain coil A Command signal gain coil Description It appears in configurations E01 and E02S01 Command signal gain coil A respectively Command signal gain coil B performs command signal gain setting According to the polarity of the signal entering the particular gain block the setting will influence the current flowing to the solenoid coil or B The block of Command signal gain coil A is active for positive polarity the block of Command signal gain coil B is active for negative polarity Example of setting in configuration E01 Command signal in configuration E01 is expressed in mA which enables an easy recomputation of the command signal to the solenoid excitation coil current For example if there is an input signal 10 and the Command signal gain coil A is set to 20 value the output excitation current to coil A will gain 200mA value Example of setting in configuration E02S01 The Command signal gain in configuration 02501 is expressed a non dimensional form If an entry signal is set to 10 and the Command signal gain coil A is set to 2 the output signal from the block will be 20 ARGOME 7 7 7 Dead Band Compensation Block symbols Dead band compensation coil A Dead band compensation coil B 24 A Description It appears in configurations 01
36. functions are disabled 7 5 Possibilities of Setting the Valve Electronics Parameters 7 5 1 Parameters table A parameters table in which all the set parameters are listed belongs to each configuration An example of the parameters table of one of the possible configurations is shown in Figure 22 The parameters table is displayed e by menu item Display gt Parameters table e or by toolbar button Parameters table ARGOEN 5 7 5 2 Block Diagram Each configuration is represented by a block diagram in which specific blocks correspond to particular functions parameters of the electronics After a click of the left mouse button on the selected block a dialog box appears which enables to make required changes An example of the block diagram of one of the possible configurations is shown in Figure 10 The block diagram is displayed e by menu item Display gt Block diagram e or by toolbar button Block diagram The block diagram enables to monitor the signal flow through the individual blocks continually and to measure currents of the valve exciting coil The measurement nods are marked with red squares and are placed between the blocks enabling the change of parameters see Figure 23 Gace 02501 interni vazba od polohy oup tka se 21 Activation of internal feedback linearizalion 22 Linearization point X1 of internal feedback feedback 16 T postion of internal feedback controller 17
37. he coil excitation current superposed on its DC component This has a significant influence on hysteresis and sensitivity of the proportional valve The setting is done experimentally This parameter sets the frequency range of the coil excitation current superposed on its DC component This has a significant influence on hysteresis and sensitivity of the proportional valve The setting is done experimentally Dither amplitude Dither frequency P parameter of external feedback controller This parameter sets the P component of external feedback controller ARAAAA AAAA PPS ANININ SENSU ENG parameter of external This parameter sets the component of external feedback feedback controller controller D parameter of external feedback controller T parameter of external feedback controller D parameter the parameter sets the derivative component of the external feedback controller T parameter the parameter modifies dynamic behavior of the external feedback controller causes delay Type of external feedback signal This parameter sets the type of the external feedback signal The external feedback signal can be voltage or current External feedback signal polarity This parameter changes external feedback signal polarity External feedback i This parameter sets the external feedback signal offset signal offset This parameter sets the external feedback signal signal gain
38. inearization point X 98 9096 65 3096 0 20 40 60 80 n Signal behind linearization block linearization function activated Linearization point goo 35 15 5 o 5 20 45 80 Yn Signal behind linearization block linearization function non activated 100 90 65 30 0 20 40 60 80 Le Linearization function of external feedback Output Node point definition 1 Input Output 80 1 98 60 2 90 35 3 65 15 40 4 30 5 20 5 0 0 6 20 5 20 7 2 40 8 60 45 E 9 80 80 Linearization ED Activated 100 100 80 60 40 20 0 20 40 50 80 100 Input Cancel OK Figure 32 External feedback linearization function dialog box ARGOS A 7 8 The valve electronics enables in so called measurement points to measure actual signals values and excitation currents to valve coils To measure via measurement points a block diagram of the actual configuration must be displayed The measurement points are marked with red squares see Figure 33 and they are placed between blocks enabling the parameters change The requested measurement point is activated by a single click left mouse button on the measurement point mark A further possibility to measure the signals represents the use of the dialog box with predefined selection of signals
39. is set to 1096 then in the command signal immediate vicinity the output signal value from the block will be offset by 10 7 7 8 Current Limiting Blocks symbols Current limiting coil A Current limiting coil B e e Description It appears in all configurations The Current limiting coil A respectively Current limiting coil B blocks are used for limiting the maximum output current which is supplied from the electronics to the solenoid coil A respectively the solenoid coil B The current limiting is set in mA The current limiting value depends on the coil type connected Example If the current limiting is set to 3500mA at the 100 signal entering the current limiting block the maximum current of 3500mA will excite the solenoid coil The set current limiting values can be reached only in case of fulfilling the conditions resulting from the Ohm s law ARGOEN 7 7 9 Dither Blocks symbols Dither amplitude Dither frequency AANAND NEEDS Description of the function It appears in all configurations Dither amplitude Dither frequency blocks enable to define dither parameters Dither is a signal superposition with a defined curve for the direct current component of the output current from the electronics supplying the solenoid coils Its aim is to keep the valve spool moving constantly oscillation with a small amplitude by which a substantially smaller friction
40. line automatic connection after the start up The setting is possible from dialog box activated by menu item Communication gt Setting 7 4 4 Downloading Data to the Valve Electronics Downloading data to the valve electronics from the program PRM7Conf is possible to be realized e by menu item Valve gt Download data e or by toolbar button Download to directional valve 7 4 5 Status of the Valve Electronics The proportional valve electronics can detect the basic errors signalized by fleshing the red LED In this case the valve electronics does not react to status parameters changes though the connection in the on line mode is established The error state of the valve electronics including further information selected communication port mode of the program firmware version and the electronics serial number is possible to be found out in the Status dialog box Status dialog box see Figure 8 appears after selection of the menu item Communication gt Status ARGOEN id Communication Port COMI Mode on line Firmware version 30 05 Serial number 1045 Error state no errors were detected Test Figure 21 Status of the valve electronics 7 4 6 Reset of the Valve Electronics The reset of the valve electronics from program 7 interface can be carried out e by menu item Communication gt Reset e or by toolbar button Reset While the reset command is executing all program
41. munication with the Valve Electronics 7 4 1 Communication Setting The program PRM7Conf communicates with the valve electronics via the computer RS232 serial interface The basic baud parameters are e Baud rate 19200 bps e 8 data bits e No parity e 1 stop bit The port communication setting is provided via menu item Communication gt Setting n the shown dialog box Communication setting see Figure 19 it is possible to assign a communication port Proportional directional control valve PRM7 user interface Communication setting Communication Figure 19 Communication Setting ARGOEN i 7 4 2 Communication Establishment The program PRM7Conf offers two modes of work e on line Connection to the valve electronics is established and parameters changes will be applied immediately e off line Connection to the valve electronics is not established All the changes made will come out at the moment of the connection to the proportional directional control valve Connection to the valve electronics turnover of the program PRM7Conf to the on line mode is possible to be established e by menu Communication gt On line e or by toolbar button On line By the same options it is possible to break down the connection to the valve electronics turnover of the program PRM7Conf to the off line mode If the connection with the valve electronics is not established the main re
42. nd off line The function of the button is the same as the function of the menu item Communication Online 7 3 3 Status Line The status line is located right in the bottom of the graphical user interface The sense of the status line is to provide important information about the actual program status Its detail is shown in Figure 18 Mode on line Firmware V 30 05 Configuration E2501 internal spool position feedback C data E02501 prm Figure 18 Status Line The status line shows e The actual mode of the program on line and off line e The information about the firmware version ARGONEN e The current directional control valve configuration During data uploading from the valve electronics or data downloading to the valve electronics the actual status of uploading or downloading is displayed here e The name of the file PRM that is in operation The actual mode of the program and firmware version can to be found in the Status dialog box which is activated by the menu item Communication Status 7 3 4 Desktop The desktop occupies the biggest part of the graphical interface of the program PRM7Conf Displayed on the desktop are according to the chosen option the following items e diagram and individual dialog boxes that are activated by the block diagram e Parameters table e Measurement dialog box e Communication setting dialog box e Configuration change dialog box 7 4 Com
43. nfluence on hysteresis and sensitivity of the proportional valve The setting is done experimentally Dither amplitude ARGOME This parameter sets the frequency range of the coil excitation current superposed on its DC component This has a significant influence on hysteresis and sensitivity of the proportional valve The setting is done experimentally Dither frequency P parameter of internal feedback controller This parameter sets the P component of the internal feedback controller parameter of internal feedback controller This parameter sets the component of the internal feedback controller D parameter of internal feedback controller T parameter of internal feedback controller D parameter the parameter sets the derivative component of internal feedback controller T parameter the parameter modifies dynamic behavior of the internal feedback controller causes delay P parameter of external feedback controller This parameter sets the P component of the external feedback controller parameter of external This parameter sets the component of the external feedback feedback controller controller D parameter of external D parameter the parameter sets the derivative component of feedback controller the external feedback controller T parameter of external T parameter the parameter modifies dynamic behavi
44. ntegration constant should proceed in a similar way The overshoot of the transient response should be a little higher than supposed e The derivative constant D which should decrease the higher overshoot to the specified value again starts to increase last e fthe control time is maintained or even decreased due to increasing the derivative constant D the constants P and can go still higher e fthe control time is prolonged at the system stabilization by means of the derivative component it is necessary to decrease constants of all components especially D constant e Prolonging of acting of derivative component is possible to carry out by T constant ARGOEN m 7 7 11 Type of External Feedback Signal Block symbol Type of external feedback signal Ext A Description It appears in configurations E03 and E04S01 Type of external feedback signal block defines the type of the signal flowing to the electronics input from the external sensor The allowed signals from the external sensor are 0 10V 0 20mA 4 20 The standardly supplied valves in configurations with external feedback E03 and E04S01 have this input set as voltage with the signal level 0 10V 7 7 12 External Feedback Signal Polarity Block symbol External feedback signal polarity To Description It appears in configurations E03 and E04S01 The block changes external feedback sensor signal polarity If the block is set OFF the valve b
45. or bipolar Command signal Command signal polarity This parameter changes the command signal polarity This parameter defines the threshold of the command signal below which the command signal is ignored The main purpose is to suppress a signal noise around command signal zero This parameter sets the time within the signal behind the ramp function increase from 0 to 100 at 100 step increase of the entering signal The current to the coil A is directly proportional to the signal increase behind this ramp This parameter sets the time within the signal behind the ramp function increase from 0 to 100 at 100 step increase of the entering signal The current to the coil B is directly proportional to the signal increase behind this ramp This parameter sets the time within the signal behind the ramp function decrease from 100 to 0 at 100 step decrease of the entering signal The current to the coil A is directly proportional to the signal decrease behind this ramp Threshold Ramp up coil A Ramp up coil B Ramp down coil A EB B This parameter sets the time within the signal behind the ramp function decrease from 100 to 0 at 100 step decrease of the entering signal The current to the coil B is directly proportional to the signal decrease behind this ramp Ramp down coil Command signal gain coil A This
46. or of the feedback controller external feedback controller causes delay Type of external This parameter sets the type of the external feedback signal feedback signal The external feedback signal can be voltage or current External feedback signal polarity This parameter changes the external feedback signal polarity External feedback i This parameter sets the external feedback signal offset signal offset External feedback This parameter sets the external feedback signal gain signal gain This parameter activates the internal feedback linearization The linearization function is used for modification of the natural status of the valve flow rate characteristics Activation of internal feedback linearization Linearization point Xn of internal feedback Linearization point Yn of internal feedback This parameter allows defining 9 linearization points The linearization function is used for modification of the natural status of the valve flow rate characteristics This parameter activates the external feedback linearization Activation of external The linearization function is used for definition of the required feedback linearization functional relation between its input and output of external signal feedback Linearization point Xn of external feedback Linearization point Yn of external feedback This parameter allows defining of 9 linearization points The linearization function is used for definition of the re
47. parameter defines the transfer relation between the command signal and the current to the coil A Command signal gain coil B This parameter defines the transfer relation between the command signal and the current to the coil B Dead band compensation coil A This parameter defines the step change of the current to the coil A to compensate the positive overlap of the valve spool Dead band compensation coil B This parameter defines the step change of the current to the coil B to compensate the positive overlap of the valve spool This parameter limits the maximum output current to the coil A Current limiting coil A This parameter limits the maximum output current to the coil B Current limiting coil B This parameter sets the amplitude range of the coil excitation current superposed on its DC component This has a significant influence on hysteresis and sensitivity of the proportional valve The setting is done experimentally This parameter sets the frequency range of the coil excitation current superposed on its DC component This has a significant influence on hysteresis and sensitivity of the proportional valve The setting is done experimentally Dither amplitude Dither frequency This parameter enables to change the configuration of the valve electronics The block symbol is used only for config
48. pplication differs according to the respective configuration ARGOME 2 2 Technical Parameters Basic parameters General Environment temperature Electric overlap grade Vibrations Disturbance resistance Interference emission Basic directional control valve parameters Nominal size Installation dimensions Maximum working pressure in outlets P A B Maximum working pressure in outlet T Pressure liquid Fluid working temperature range NBR Viton Working viscosity range Specified fluid cleanliness level Nominal flow rate dm min at Ap 10 bar Basic electronics parameters Power supply voltage with protection against reversing of polarity Input command signal Range marking 20 C 50 C IP65 Oscillations sine wave according to IEC 68 2 6 Shocks according to IEC 68 2 27 Conduit impact according to EN 61000 4 4 HF exposure according to EN 61000 4 3 HF conduit supply according to EN 61000 4 6 Emission related to conduit according to EN 55011 Radiated emission according to EN 55011 604 NGO06 10 DIN 24 340 and ISO 4401 320 bar Mineral oil HM HV according to DIN51524 30 80 C 20 C 80 20 mm s 400 mm s Grade 21 15 according to ISO 4406 1987 recommended filter s filtering capability Bio gt 75 4 8 12 15 30 30 60 11 2 28 V DC residual ripple lt 10 10V 0 10V 10mA 4 20mA 0 20mA 12 8 mA Input
49. program and about its producer 7 3 2 Toolbar The toolbar is located right in the top of the program user interface below the main menu and it gathers the often used menu items Its detail is shown in Figure 17 sa amp ms x 22 CRY Figure 17 Toolbar Read data from file This button enables to read data from a configuration file file This function of the button is the same as the function of the menu item File gt Open Save data to file This button enables to save data to file PRM file This function of the button is the same as the function of the menu item File gt Save Print This button enables to print the table of the set parameters out which occur in the chosen configuration This function of the button is the same as the function of the menu item File gt Print Copy This button enables to copy a chosen text from a table cell selected for edit This function of the button is the same as the function of the menu item Edit gt Copy rs Paste This button enables to insert the cut text or copied text into the cell for edit The function of the button is the same as the function of the menu item Edit Paste X Cut This button enables to cut the text from a cell selected for edit The function of the button is the same as the function of the menu item Edit gt Cut ARGOEN 15 CB Upload data from valve This button enables to upload d
50. quired functional relation between its input and output of external signal feedback ARGO a Directional valve configuration Directional valve configuration This parameter enables to change the configuration of the valve electronics The block symbol is used only for configuration with coils on side A and B This parameter enables to change the configuration of the valve electronics The block symbol is used only for configuration with one coil on side A resp side B ARGOEN ESHYTOS 32 7 7 Basic Configuration Blocks Detailed Description In this part the basic blocks which the individual block diagrams enabling the valve electronics setting consist of are described Each block matches the equivalent item in the parameters table 7 7 1 Directional Valve Configuration Block symbol Description It appears in all configurations The block is used for setting the valve into the required configuration The valve is possible to be set into the configuration E01 02501 E03 E04S01 Each configuration is in modification with two solenoids or in modification with one solenoid on A side respectively on B side The configuration identification in the parameters table is shown in Table 1 E01 E02S01 E03 E04S01 Directional Valve Open loop Internal External Internal and Configuration feedback feedback external feedback With one coil on A side OL_A CL_int_A CL_ext_A CL_int amp ext_A Wi
51. r negative polarity The setting expresses the time within the signal behind the ramp function increases from 0 to 100 at a 100 step increase of the entering signal ARGOEN ESHYTOS 34 Ramp down coil A respectively Ramp down coil sets the command signal gradual decrease According to polarity of the signal entering to ramp functions the setting takes effect in the gradual decrease of the current for the solenoid coil A respectively for the solenoid coil B The setting expresses the time within the signal behind the ramp function decreases from 100 to 0 at a 100 step decrease of the entering signal Example The block setting Ramp up coil A for 5s The entering signal change from 0 to 50 shows itself by linear increase of the output signal from 0 to 50 for 2 55 Description of function in configuration E03 E04S01 Ramp up sets the time within the signal behind the ramp function the controlled parameter increases from 096 to 100 at a 10096 step increase of the entering signal Ramp down sets the time within the signal behind the ramp function the controlled parameter decreases from 100 to 0 at 100 step increase of the entering signal Example The block setting Ramp up for 5s e The entering signal step change from 0 to 50 shows itself by linear increase of the output signal from 0 to 50 for 2 55 e entering signal step change from 50 to 50 shows itself by linear increase of the output signal
52. ram by PRM7Conf shortcut located in menu Start gt Programs of the operating system Windows 7 3 User Interface User interface of the program PRM7Conf is shown in Figure 15 Its main parts are e Menu e Toolbar e Status Line e Desktop Through these parts the program communication can be established easily Additionally it is possible to carry out the valve electronics setting or to read the status of the valve electronics serrer directional control valve PRM7 user interface it Display Directional valve Communication 286 187 ON CA of the 02501 internal spool position feedback with two coils of ST re rop 5 A Figure 15 Progra PRM7Conf work user interface 7 3 1 The main menu is located right in the top of the graphical user interface Its detail is shown in Figure 16 The often used items are placed in the toolbar File Edit Display Directional valve Communication Help Figure 16 Main menu of the program PRM7Conf File This menu enables to work mainly with configuration files PRM files These files are used for storing the valve electronics setting data The stored files could be used for easy setting of the directional control valve electronics or re writing incorrect data back to initial if the new ones are not satisfactory The items of the menu File are e Open The item enables to open PRM file e Save The item enables to save P
53. regard to requirements of the actual application j X 1 4 MIT UM A schematic symbol example P Figure 5 Proportional directional control valve with two coils in configuration 04501 spool position feedback and external feedback 4 Valve Assembly Valves are designed for installation according to DIN 24 340 and ISO 4401 Make the assembly according to the producer s instructions written in the documentation that is a part of each valve package i 5 Electrical Connection The digital integrated electronics is located in a plastic box situated directly on the proportional directional control valve solenoid The electronics is connected to this solenoid with the help of connectors which are placed inside the box The second solenoid is connected to the electronics by a cable and a connector DIN 43650 Connections of the control system power supply spool position feedback and external feedback PC and solenoids power supply are shown in Figure 6 Control Power Supply Connection with External Feedback Solenoid Power Supply Spool Position Feedback Figure 6 Proportional directional control valve PRM7 electronics box 5 1 Connection of Power Supply and Command Signal to the Valve Electronics The connection of the power supply and the command signal to the valve electronics will be made by means of a
54. s a position sensor eventually a box with digital electronics The position sensor measuring system consists of a differential transformer with a core and the evaluation electronics in the hybrid design The proportional directional control valve PRM7 is produced in three basic sizes Ng4 Ng6 Ng10 In design with integrated electronics the proportional directional control valve is equipped with an electronics box which is fixed to any solenoid together with the position sensor the outlet of which is directly connected to it by a cable In design with two solenoids the opposite solenoid is connected with the electronics box by means of a cable terminated with connector EN 175301 803 A Coils can be rotated round the longitudinal axis by 90 including the electronics box Connecting of power supply voltage command signal spool position sensor control outlet if it is there and 10V DC output voltage is accomplished through a seven poles connector M23 Connecting of external feedback is accomplished with the help of a five poles connector M12x1 where there is except of external feedback input also the power supply voltage 24V for the external sensor The output current to solenoid coils is controlled by means of PWM Electronics is equipped with internal current feedback the output current can be modulated by a dither signal Individual function parameters are set by software with the help of a computer connected to the proportional direction
55. spool position 0 5V Input external feedback 0 10V 4 20 0 20 Resolution of A D transducers 12 bit 18 kHz PWM frequency Output solenoid coils Two final stages with pulse width modulation max 3 5A Cycle period of the controllers 170us Setting of parameters With the help of PC RS232 and user s software PRM7Conf CAN serial interface On inquiry ARGOEN ESHYTOS 3 Design of Valves 3 1 Configuration E01 directly operated proportional directional control valve The proportional directional control valve in the configuration E01 direct operation see Figure 2 can be used according to the spool type used for the oil direction and flow rate control position or speed control A schematic symbol example P Figure 2 Proportional directional control valve with two coils In the configuration E01 direct operation 3 2 Configuration E02S01 proportional directional control valve with internal spool position feedback The proportional directional control valve in the configuration E02S01 spool position feedback see Figure 3 can be used according to the spool type used for the oil direction and flow rate control position or speed control Thanks to the spool position feedback the valve in comparison to the configuration E01 provides higher dynamic parameters features minimal hysteresis and high sensitivity to the command signal
56. th one coil on B side OL B CL int B CL ext B CL int amp ext B With two coils OL A amp B CL int A amp B CL ext AB CL int amp ext A amp B Table 1 The identification of the valve configuration in the parameters table 7 7 2 Command Signal Type Selection Block symbol ooo Description It appears in all configurations The block determines the valve command signal type that is connected to the electronics input All signal types which can be used for the valve operation are tabulated in Table 2 Valve configuration E01 02501 04501 Int ext nternal and externa Signals Open loop Internal feedback External feedback feedback 10V 0 10V 0 20mA 4 20mA 10 12 8 Table 2 Allowed command signals for possible configurations 7 7 3 Command Signal Polarity Block symbol 0 Description It appears all configurations The block changes the command signal polarity Allowed command signal polarities for possible configurations are shown in Table 3 If the block is set OFF the valve behaves as if the command signal was disconnected Valve configuration E01 E02S01 E03 E04S01 Allowed Internal and external polarities Open loop Internal feedback External feedback feedback Coils 1 Coils Coils Coils Coil A Coil B AB Coil A Coil B AB Coil A Coil B AB Coil A Coil B AB 1
57. tions which enable data exchange between the program PRM7Conf and the electronics Additionally the menu enables the valve configuration change The items of menu Valve are e Upload data The item enables to upload data from the valve electronics to the program e Download data The item enables to download data to the valve electronics e Configuration change The item enables to change the valve electronics configuration according to the ordering code The program offers 12 basic configurations in total Communication This menu contains functions which enable program communication with the valve electronics The individual items of the menu Communication are e Setting The item enables a communication port setting of the RS232 serial interface Furthermore the item enables setting the mode on line off line after the program start ARGOME id e Status The item enables to read information in relation with setting of the program communication with the electronics error state and the electronics firmware version e Reset The item enables reset of the electronics e On line The item enables the program connecting to the valve electronics or program disconnecting from the valve electronics Help This menu opens the Help and provides important information about the program PRM7Conf The items of the menu Help are e Content The item shows the help content e About The item provides information about the
58. uration with coils on side A and B Directional valve configuration This parameter enables to change the configuration of the valve electronics The block symbol is used only for configuration with one coil on side A resp side B Measurement point Directional valve configuration ARGOEN 56 7 6 2 Configuration E02S01 Configuration 02501 proportional directional control valve with internal spool position feedback is available in 3 modifications Solenoid coils located on side A and B of the valve solenoid coil located on side A only solenoid coil on side B only The valve block diagram with solenoid coils on side A and B is shown in Figure 28 For this configuration modifications with one solenoid coil the block diagram is similar my a mn xj i ean i A m EE gt Figure 28 Configuration E02S01 block diagram with solenoid coils side A and B Here is the list of parameters of the valve electronics which are set for this configuration This parameter sets the type of the command signal The Command signal i 9 command signal can be voltage or current unipolar or bipolar Command signal polarity This parameter changes the command signal polarity This parameter defines the threshold of the command signal below which the command signal is ignored Its main purpose is to suppress a signal noise around

Proportional Directional Control Valve PRM7 - ARGO

Contents

Download Pdf Manuals

Related Search

Related Contents