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Parker PWD Series, Operation Manual

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Parker PWD Series Operation Manual Download Page 17

17

Electronic for proportional DC valves
Series PWDXXA-40X

Operation Manual

PWDXXA-40X_20 5715-677 UK.indd 26.01.17

Parker Hannifin Corporation

Hydraulics Group

Parker Hannifin Corporation

Hydraulics Group

Example 2:
Closed loop position control of a hydraulic cylinder, 
utilizing a proportional directional control valve with 

external electronics (D*FB). Command preset via 
external control signal.

Summary of Contents for PWD Series

Page 1: ...0X Design 20 Electronic for Proportional DC Valves Parker Hannifin Manufacturing Germany GmbH Co KG Hydraulic Controls Division Europe Gutenbergstr 38 41564 Kaarst Germany Tel 49 181 99 44 43 0 E mail...

Page 2: ...ting is solely responsible for making the final selection of the system and components and assuring that all performance endurance maintenance safety and warning requirements of the application are me...

Page 3: ...rtant details 8 3 1 Intended usage 8 3 2 Common instructions 8 3 3 Liability 8 3 4 Storage 8 4 Mounting Installation 9 4 1 Scope of supply 9 4 2 Mounting 9 4 3 Operation limits 9 4 4 Electrical connec...

Page 4: ...r Hannifin Corporation Hydraulics Group 1 Introduction 1 1 Front view dimensions Position control universal Electronic module for DC valves Design series Amplifier Min Max adjustment accel decel ramps...

Page 5: ...neces sary functions for the optimal operation of pro portional directional control valves with position sensor The most important features are digital circuit design parametrizable control as positi...

Page 6: ...oid output off 3 8 mA solenoid output on acc NAMUR NE43 Input signal resolution 0 025 Differential input voltage max V 30 for terminals 5 and 6 against PE terminal 8 11 for terminals 5 and 6 against 0...

Page 7: ...7 Electronic for proportional DC valves Series PWDXXA 40X Operation Manual PWDXXA 40X_20 5715 677 UK indd 26 01 17 Parker Hannifin Corporation Hydraulics Group 1 7 Signal flow diagram...

Page 8: ...contamination atmospheric exposure and mechanical damages 2 Safety instructions Please read the operation manual before installa tion startup service repair or stocking Paying no attention may result...

Page 9: ...y and the supplier 4 2 Mounting Compare electronics type located on the name plate with part list resp circuit diagram The module may be mounted in any direction The module has to be mounted within a...

Page 10: ...ne frame The earth ground wire from terminal 8 as well as the cable shields have to be tied to the protective earth terminal within the control unit It is necessary to use a low ohmic potential connec...

Page 11: ...enable function represents no safety arrangement against unwanted valve opera tion in terms of rules for accident prevention To block the valve function under all condi tions more advanced steps are...

Page 12: ...ndi tion as breakdown information This means the presence of an evaluable failure informa tion if the input signal line is interrupted In this case the solenoid output will be switched off The output...

Page 13: ...optional comparator output A voltage information representing the feedback signal i e the valve stroke is available from the terminals 7 and 13 Herewith a voltage span of 10 V 0 10 V means 100 0 100 f...

Page 14: ...ain any protective or indication components i e re covery diodes or lamps otherwise function disturbances and permanent damages may occur to the electronics module Sensor input The sensor has to be wi...

Page 15: ...40X_20 5715 677 UK indd 26 01 17 Parker Hannifin Corporation Hydraulics Group Wiring diagram of standard sensor input Parker valves Wiring diagram of sensor input 0 10 V Wiring diagram of sensor input...

Page 16: ...DXXA 40X Operation Manual Parker Hannifin Corporation Hydraulics Group Example 1 Closed loop pressure control within a hydraulic cylinder performed utilizing a proportional pres sure con trol valve wi...

Page 17: ...l PWDXXA 40X_20 5715 677 UK indd 26 01 17 Parker Hannifin Corporation Hydraulics Group Example 2 Closed loop position control of a hydraulic cylinder utilizing a proportional directional control valve...

Page 18: ...alves Series PWDXXA 40X Operation Manual Parker Hannifin Corporation Hydraulics Group Example 3 Closed loop position control of a hydraulic cylinder performed via proportional directional control valv...

Page 19: ...d entry mask the parameters can be noticed and modified Storage of complete param eter sets to floppy or hard disk is possible as well as printout or record as a text file for further docu mentation S...

Page 20: ...butors for elec tronic components A proper function of the data communication requires in this case at least the following described cable configuration The cable has to be inserted between an unused...

Page 21: ...ata retrieving is always possible via the function Load out of database Extended functions The user software is shared into 2 parameter ranges basic mode expert mode For normal startup the basic mode...

Page 22: ...tronics functionality a manual pre selection of the parameters is possible After selection of the electronics type via the menu Options the parameters may be set and stored for later transmission Note...

Page 23: ...stment of maximum stroke for valve side B at 100 command signal To match the command signal span to the valve operating range P7 MIN channel A Adjustment of stroke step for valve side A at 0 1 command...

Page 24: ...0 P23 comparator rise delay time ms 0 10000 0 P24 comparator turn off delay time ms 0 10000 0 P26 window I portion 0 200 0 20 0 P27 reduct window I portion 0 100 0 100 0 E2 closed loop control 0 inac...

Page 25: ...eedback monitoring To adjust the feedback monitoring range P23 comparator rise delay time Adjustment of the comparator rise delay time To delay the rise threshold for the comparator function P24 compa...

Page 26: ...proportional P integral I and derivative D each with a user adjustable co efficient The user software provides therefore the parameters P16 P P17 I and P18 D P P16 This term provides an immediate out...

Page 27: ...functionality of the control loop be achieved At first you should set off the control loop set parameter E2 to value 0 open loop and transmit to the electronic and cause the drive via manual control...

Page 28: ...us items Unexplainable problems Check the setting of all parameters Improving system performance Using the parameter P17 I gain The integrator gain abbreviated I can be adjusted to reduce or eliminate...

Page 29: ...e the best system dynamic sensors with integrated D A converter should operate with a high sampling rate Magnetostric tive transducers with digital output often have a low sampling rate because an int...

Page 30: ...ow will be leaving which might be adjustable by parameter P26 P26 shall be adjusted in the way that the window lies near the final pressure A too low a value of P17 causes low frequency oscillations w...

Page 31: ...t may be difficult for you to tell how good the system response is the test profile may also be generated by an up stream electronic module PZD00A 40X The test profile should start caus ing the system...

Page 32: ...tter error reduction while the response will be longer This parameter is only effective if a window 0 is defined via P26 Eliminating a slow small amplitude oscillation in stationary condition Due to t...

Page 33: ...troller updates the electrical output to the valve at 1000 Hz This rate is fast enough to have negligible effect in almost all hydraulic applications but it does set an absolute limit on the response...

Page 34: ...the exact spelling case sensitivity Wrong input An unvalid character or a value outside the permitted range has been used at parameter entry Keep the entered parameters During parameter loading from t...

Page 35: ...ls tight fit on the mounting rail tight fit of the disconnectable terminals tight fit of the terminal screws environmental temperature level supply voltage level cleanliness of the ambience Service wo...

Page 36: ...t of a sluggish spool the valve may be flushed with clean pressure fluid Trouble shooting in a hydraulic system requires in either case a systematic approach The work may exclusively be performed by q...

Page 37: ...port for starting up Parker hydraulic controls maintenance of Parker controls repairofallParkerrelatedhydraulicandelectrical devices assistanceinthesupplyofsparepartsworldwide direct service for mobil...

Page 38: ......

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