W.E.S.T. Elektronik POS-124-A-PDP Technical Documentation Manual Download Page 1

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Elektronik GmbH

Technical Documentation

POS-124-A-PDP

POS-124-I-PDP

Two axes positioning and synchronisation control module with

integrated profibus interface and SSI sensor interface

Summary of Contents for POS-124-A-PDP

Page 1: ...W E ST Elektronik GmbH Technical Documentation POS 124 A PDP POS 124 I PDP Two axes positioning and synchronisation control module with integrated profibus interface and SSI sensor interface...

Page 2: ...parameter groups 20 5 2 4 SENS Module monitoring 21 5 2 5 STROKE1 STROKE2 Full stroke 21 5 2 6 VRAMP1 VRAMP2 Ramp time for external speed demand 21 5 2 7 VMODE1 VMODE2 Switching over the control mode...

Page 3: ...32 INPOS D1 INPOS D2 following error window 33 5 2 33 PROCESS DATA Monitoring 34 6 Appendix 35 6 1 Failure monitoring 35 6 2 Troubleshooting 35 6 3 Description of the command structure 37 7 Profibus D...

Page 4: ...width 1 2 Scope of supply The scope of supply includes the module including the terminal blocks which are a part of the housing The Profibus plug interface cables and further parts which may be requi...

Page 5: ...Tel 49 0 2163 577355 0 Fax 49 0 2163 577355 11 Homepage www w e st de or www west electronics com EMAIL info w e st de Date 13 02 2013 The data and characteristics described herein serve only to desc...

Page 6: ...into operation by trained specialist staff The instruction manual must be read with care The installation instructions and the commis sioning instructions must be followed Guarantee and liability clai...

Page 7: ...ating states and error conditions via Profibus to the higher level control The operation is signaled by a switch output Typical applications Positioning control or synchronization control with hydraul...

Page 8: ...14 15 16 13 D 41372 Niederkr chten Homepage http www w e st de W E ST Elektronik 8 7 6 5 4 3 2 1 16 15 14 13 12 11 10 9 30 31 32 29 26 27 28 25 18 19 20 17 22 23 24 21 Profibus 9pol SUBD Online 46 47...

Page 9: ...e powerful interference sources frequen cy converters power contactors and cable lengths 3m Inexpensive SMD ferrites can be used with high frequency radiation The screening should be connected to PE P...

Page 10: ...ith hydraulic drives The system works based on the principle of stroke dependent deceleration i e the control gain deceleration stroke is set via parameters D A and D B Alternatively the loop gain wil...

Page 11: ...n and the system stays in closed loop position control mode Setting the synchronous bit GL will synchronize both axes and the synchronization controller is overrid ing the position controller of axis...

Page 12: ...ch is uncritical for the application Control signals Check the control signal with a voltmeter The control signals PIN 15 to PIN16 and PIN19 to PIN20 lies in the range of 10V In the current state it s...

Page 13: ...tput for activation of the axis 1 100 100 corresponds to 10 10V PIN 19 20 Analogue differential output for activation of the axis 2 100 100 corresponds to 10 10V Connection SSI sensors PIN 37 40 PIN 3...

Page 14: ...r ENABLE is not activated ON System is ready for operation Flashing Error discovered valve solenoid or 4 20 mA The error of one axis results to a flashing LED YELLOW Only active in synchronous mode OF...

Page 15: ...RIGGER OFFSET POL VMODE SDD Output limitation DC DC 24 V 0 V PELV xd1 w1 VMODE SDD Speed Commands TS sample time MODE Expert or Standard EOUT Error Mode INPOS InPos output 35 32 Profibus SUBD 9polig 9...

Page 16: ...interface 40 SSI 1 sensor interface CLK CLK DATA DATA 24 V DC GND PE PE Klemme 4 5 Connection examples In PIN 13 or 14 PIN 12 GND SPS PLC 0 10 V speed input signal In PIN 10 In PIN 9 GND PIN 11 AIN W...

Page 17: ...Current Signal resolution V mA mA 2 x 0 10 Differential output 5 max load 0 024 4 20 390 Ohm maximum load 0 024 SSI interface RS 422 Spezifikation 150 kBaud Controller sample time ms 1 Serial interfac...

Page 18: ...0 nm Position offset SSI POL1 SSI POL2 Sensor polarity SSI RES 500 10 nm Resolution of the sensors the same for both SSI BITS 24 Number of transmitted bits the same for both SSI CODE GRAY transfer Enc...

Page 19: ...on MAX1 I MAX2 I 10000 10000 0 01 0 01 Maximum output signal limitation TRIGGER1 TRIGGER2 200 200 0 01 0 01 Trigger threshold for activating the following error compensation MIN OFFSET1 OFFSET2 0 0 0...

Page 20: ...TON in the menu bar WPC 300 must be pressed module identification 5 2 2 PDPADR Profibus adress Command Parameters Unit Group PDPADR X x 1 126 STD Slave address in the Profibus network 5 2 3 MODE Switc...

Page 21: ...for fault finding 5 2 5 STROKE1 STROKE2 Full stroke Command Parameters Unit Group STROKE1 X STROKE2 X x 10 10000 mm STD This command defines the full stroke which corresponds to 100 of the input signa...

Page 22: ...following error to follow the position profile The magni tude of the following error is determined by the dynamics and the set control gain The ad vantage is that the speed is constant regardless of e...

Page 23: ...ons at the specified speed in case of a sensor error EOUT 0 The output is switched off in the event of an error This is normal behaviour CAUTION If the output signal is 4 20 mA the output is switched...

Page 24: ...The internally processed accuracy is 1 micron CAUTION It can only be used SSI sensors of the same type ie the resolution of the sensor the number of bits transmitted and the transmission coding must b...

Page 25: ...nsors Take the data from the sensor data sheet Caution The signal resolution for both SSI sensors must be equal 5 2 15 SSI BITS Number of bits Command Parameters Unit Group SSI BITS X x 8 31 bits INPX...

Page 26: ...b 1000 The internal measuring resistor for measuring the current 4 20 mA is activated via the x value and the evaluation switched over accordingly Typical settings Command Input Description AIN X1 100...

Page 27: ...or B The control gain is calculated internally depending on the deceleration distance The shorter the deceleration distance the higher the loop gain A longer deceleration distance should be specified...

Page 28: ...and POSITION parameters Calculation of the internal control gain In NC Mode the following error at maximum speed is calculated by means of the loop gain This following error corresponds to the deceler...

Page 29: ...accuracy but can also lead to longer positioning times in individual cases LIN Linear deceleration characteristic gain is increased by a factor of 1 SQRT1 Root function for braking curve calculation...

Page 30: ...GLP the braking distance in mm The gain will depend on the stopping distance is calculated internally In short braking distance the high gain is calculated In the case of instability should be given a...

Page 31: ...y switch input to be assigned The drive moves in a controlled manner in the defined direction when the manual signal is active After the manual signal has been disabled the drive remains under closed...

Page 32: ...lifier it must be ensured that the adjustment is performed either at the power amplifier or in the module If the MIN value is set too high this has an effect on the minimum speed which can then no lon...

Page 33: ...tion value The actual position value within this window is signalled by the INPOS S message at the status output see signal description PROFIBUS The positioning process is not influenced by this messa...

Page 34: ...U1 U2 Actual command position axis 1 2 External command position axis 1 2 Feedback positon axis 1 2 Control error axis 1 2 Synchronisation error at axis 2 Speed set point 1 2 Control signal axis 1 2 0...

Page 35: ...is communication between the module and the WPC 300 Furthermore the valve control parametrisation has been set with the assistance of the valve data sheets The RC in monitor mode can be used to analys...

Page 36: ...system is working and also actuating the valve Various potential problems could be The parametrisation is not yet adjusted to the system gain too high There is severe interference on the power supply...

Page 37: ...an arbitrary command name nnnn used for an arbitrary command name expandable by an index i oder I a dummy is for the index E g an index can be A or B depending on the direction x parameter value in c...

Page 38: ...e status 7 2 Installation A typical screened Profibus plug D Sub 9pol with switchable termination is mandatory Every Profibus segment must be provided with an active bus termination at the beginning a...

Page 39: ...ernal parameters HAND1 2 B If the velocity is limited by the command velocity only the maximum command velocity can be used for movement GL Activation of synchronism synchronization of axis 2 to axis...

Page 40: ...ion 1 m 0 001 mm 4 3 Command position axis 1 5 4 Command position axis 1 6 5 Command position axis 1 Lo 7 6 Velocity axis 1 Hi Signal range 0x3fff 16373 100 of the nominal speed 8 7 Velocity axis 1 Lo...

Page 41: ...s active In case of DIRECT 1 new command positions can be sending continuously 1 0 Signal change from 1 to 0 an emergency stop ramp is calcu lated and the positioning process is stopped via this ramp...

Page 42: ...tus word Hi unsigned int 2 1 Status word Lo 3 2 Feedback position axis 1 Hi Signal resolution 1 m 0 001 mm 4 3 Feedback position axis 1 5 4 Feedback position axis 1 6 5 Feedback position axis 1 Lo 7 6...

Page 43: ...hronization error window 7 6 InPosS1 1 The position of the axis is within the InPosS window 0 The position of the Axis is out of the InPosS window 8 7 READY1 1 Axis is working no error detected 0 An e...

Page 44: ...W E ST Elektronik GmbH Page 44 of 45 POS 124 PDP 1121 13 02 2013 8 Notes...

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