Parker PID00A-40 Series Operation Manual Download Page 18 | Manualshive

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Parker PID00A-40 Series Operation Manual Download Page 18

18

Electronics for Closed Loop Control

Series PID00A-40X

Operation Manual

PID00A_10 5715-616 UK.indd CM 14.11.14

Parker Hannifin Corporation

Hydraulics Group

Example 3:

Closed loop pressure control within a hydraulic
cylinder, performed utilizing a proportional pres-
sure con trol valve with external electronic (RE*W,
VMY). Command preset via external control signal.

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Summary of Contents for PID00A-40 Series

Page 1: ...40X Design 10 Electronics for Closed Loop Control 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: ...at all performance endurance maintenance safety and warn ing requirements of the application are met The user must analyze all aspects of the application follow applicable industry standards and follo...

Page 3: ...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 Operational limits 9 4 4 Electrical connection 9 4 5 Electrical inte...

Page 4: ...rker Hannifin Corporation Hydraulics Group 1 Introduction 1 1 Front view dimensions 1 2 Ordering code 1 3 Name plate Universal Code Function 0 Standard 1 Linearization Electronic module closed loop co...

Page 5: ...described electronic unit combines all neces sary functions for the optimal operation of closed loop controls The most important features are 1 5 Characteristics Extended PID controls Velocity control...

Page 6: ...solenoid output on acc NAMUR NE43 Input signal resolution 0 025 Differential input voltage max V 30 for terminals 5 und 6 against PE terminal 8 Status signal V 0 0 5 Off Us On rated max 15 mA Enable...

Page 7: ...7 Electronics for Closed Loop Control Series PID00A 40X Operation Manual PID00A_10 5715 616 UK indd CM 14 11 14 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: ...s at once as shock hazard protection and marking strip Dimensions assembly rail 4 Mounting Installation 4 1 Scope of supply Please check immediately after receiving the elec tronics if the content is...

Page 10: ...ent limit circuit may respond prematurely and create problems during energizing of the supply voltage The screw terminals are designed to allow ter mination of all kinds of copper wires without the ne...

Page 11: ...overallsafetysystems strategy Wiring diagram of enable input Enable input A signal voltage applied to the terminals 3 and 13 enables the solenoid output of the electronics Con tinuous operation of the...

Page 12: ...is case the solenoid output will be switched off The output will switched on when the input signal reaches a value of 3 8mA it switches Wiring diagram of voltage command input 10 0 10V off when the co...

Page 13: ...lfunction Wiring diagram of monitor output Wiring diagram of status output Monitor output optional comparator output A reference voltage representing the feedback sig nal is available from terminals 7...

Page 14: ...e down streamed electronic parameter E20 Signal output The terminals 7 and 9 provides the output signal set value which may be used to control exter nal amplifier modules integrated valve amplifiers a...

Page 15: ...40X Operation Manual PID00A_10 5715 616 UK indd CM 14 11 14 Parker Hannifin Corporation Hydraulics Group Wiring diagram of sensor input 0 10V Wiring diagram of sensor input 0 20mA 4 12 20mA 3 wire Wi...

Page 16: ...ydraulics Group Wiring Examples Partially the wiring requires a shielded per forance for the sake of clarify the appropriate illustration is ommitted Example 1 Closed loop position control of a hydrau...

Page 17: ...00A_10 5715 616 UK indd CM 14 11 14 Parker Hannifin Corporation Hydraulics Group Example 2 Closed loop position control of a hydraulic cylin der performed via proportional directional control valve wi...

Page 18: ...10 5715 616 UK indd CM 14 11 14 Parker Hannifin Corporation Hydraulics Group Example 3 Closed loop pressure control within a hydraulic cylinder performed utilizing a proportional pres sure con trol va...

Page 19: ...A_10 5715 616 UK indd CM 14 11 14 Parker Hannifin Corporation Hydraulics Group Example 4 Closed loop position control of a hydraulic cylin der utilizing a proportional directional control valve D FB w...

Page 20: ...structions The electronics module performs the task of com paring the command input signal value with the feedback signal value eg cylinder position The difference is then feed to a closed loop contro...

Page 21: ...setup exe Follow the instructions on the screen Answer the question if an older version should be overwritten with ok During the installation you may change destination drive resp installation path i...

Page 22: ...malfunction In case of parameter changes shut the drive down Brief instruction for first startup Connect the module electronics to the sup ply voltage Connect the module to a PC via null modem cable...

Page 23: ...Dprogramhasalsooffline i e without connection to the electronics functionality a manual pre selection of the parameters is possible After selection of the electronics type via the menu Options the par...

Page 24: ...0 1 0 P12 polarity feedback 0 1 0 P20 feedback scale 0 200 0 100 0 P29 polarity set value 0 1 0 E2 closed loop control 0 inactive open loop 0 inactive 2 active closed loop E11 sensor type feedback 1...

Page 25: ...of negative polarity signal step To compensate for the overlap of the valve spool P11 command signal polarity Adjustment of the command signal polarity To match the command signal polarity to the cont...

Page 26: ...P21 comparator function window 0 200 0 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 20 20 P27 reduct window I portion 0 100 0 10...

Page 27: ...e I portion active range in terms of the control difference To limit the I portion on a certain range P27 I gain window reduction Adjustment of the I portion outside the window in terms of the control...

Page 28: ...onal P integral I and de rivative D each with a user adjustable coefficient The user software provides therefore the parame ters P16 P P17 I and P18 D P P16 This term provides an immediate output sign...

Page 29: ...continue with tuning of the loop Tuning of the closed loop control 1 Create a suitable tuning test profile otherwise it may be difficult for you to tell how good the system response is the test profil...

Page 30: ...26 0 Repeatable position error by using a valve with overlap hysteresis Use dead band compensation feature P7 MIN channel A resp P8 MIN channel B Position error too large when following constant veloc...

Page 31: ...th the output To ensure the best system dynamic sensors with integrated D A converter should operatewithahighsamplingrate Magnetostric tive transducers with digital output often have a low sampling ra...

Page 32: ...sure this functionality the polarities of command and feed back signal must be equal 5 5 2 Application Closed loop systems for pressure via pressure control valves Introduction The electronics uses a...

Page 33: ...the test profile may also be generated by an up stream electronic module PZD00A 400 The test profile should start caus ing the system from the circulation pressure with the desired maximum accelerati...

Page 34: ...mbarked if typical problems with pres sure control loops appear Increasing load stiffness Load stiffness is the term for the resistance of the servo loop characteristics to deflection by ex ternal for...

Page 35: ...troller updates the electrical output to the valve at 1000Hz This rate is fast enough to have negligible effect in almost all hydraulic applications but it does set an absolute limit on the response o...

Page 36: ...be poor I P17 This term causes the output to change at a rate proportional to the error in measured pressure in a direction to drive the steady state error to zero P17 is active when a window will be...

Page 37: ...as desired you can contin ue with tuning of the loop Tuning of the closed loop control 1 Create a suitable tuning test profile this will enable you to evaluate your system response A test profile may...

Page 38: ...0 Repeatable deviation by using a valve with overlap hysteresis Use dead band compensation feature P7 MIN channel A resp P8 MIN channel B Following error too large during velocity profile execution U...

Page 39: ...tiation of the posi tion transducer output signal The disadvantage of such a circuit is the creation of noise in the feed back signal Thus different filter algorithms are im plemented To match the fun...

Page 40: ...ement principle and analog output the resolutionislimitedbytheutilizedA D converter which is 12 bit 1 4096 0 025 Installation The installation of the position transducer plays a most important rule fo...

Page 41: ...Check if the Com port is set for 9600 8 1 none none via the menu Options Port Wrong password Retype the password notice the exact spelling case sensitivity Wrong input An invalid character or a value...

Page 42: ...ical experiences with similar failures Have system adjustments been changed Ineithercasetheavailablediagnosticoptions should be used The electronics permits a diagnosticofthevalvefunctionviathemonitor...

Page 43: ...ervice general support for starting up Parker hydrau lic controls maintenance of Parker controls repair of all Parker related hydraulic and elec trical devices assistanceinthesupplyofsparepartsworldwi...

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