cnc-driver-kit-2 - Motion Control Products
Contents
1. Tel 44 0 1202 599922 4 MSD2278 Microstepping Driver Manual V1 0 Connections to 4 lead Motors 4 lead motors are the least flexible but easiest to wire Speed and torque will depend on winding inductance In setting the driver output current multiply the specified phase current by 1 4 to determine the peak output current P2 A B B Figure 4 4 lead Motor Connections Connections to 6 lead Motors Like 8 lead stepping motors 6 lead motors have two configurations available for high speed or high torque operation The higher speed configuration or half coil is so described because it uses one half of the motor s inductor windings The higher torque configuration or full coil uses the full windings of the phases Half Coil Configurations As previously stated the half coil configuration uses 50 of the motor phase windings This gives lower inductance hence lower torque output Like the parallel connection of 8 lead motor the torque output will be more stable at higher speeds This configuration is also referred to as half chopper In setting the driver output current multiply the specified per phase or unipolar current rating by 1 4 to determine the peak output current P2 A ie NC B B NC Figure 5 6 lead motor half coil higher speed connections Full Coil Configurations The full coil configuration on a six lead motor should be used in applications where higher torque at lower speeds is desired This co2. Vibration 5 9m s Max Approx 1 16 kg 41 oz Environment Driver s reliable working temperature should be lt 65 C motor working temperature should be lt 80 C Forced cooling the driver if it s necessary Tel 44 0 1202 599922 2 MSD2278 Microstepping Driver Manual V1 0 3 Pin Assignment and Description The MSD2278 has two connectors connector P1 for control signals connections and connector P2 for power and motor connections The following tables are brief descriptions of the two connectors of the MSD2278 More detailed descriptions of the pins and related issues are presented in section 4 5 9 O z O 7 az r 2 g we 7 pi z 72 DIR signal In single pulse mode this signal has low high voltage levels representing two directions of motor rotation in double pulse mode set by SW5 this signal is counter clock CCW pulse effective for high level For reliable motion response DIR signal should be ahead of PUL signal by Sus at least 4 5V when DIR HIGH 0 0 5V when DIR LOW Please note that motion direction is also related to motor driver wiring match Exchanging the connection of two wires for a coil to the driver will reverse motion direction Alarm signal positive READY is a photocouper output from open collector circuit effectively output when driver operate normally maximum permitted input voltage is 30VDC maximum ou
3. 3 5V it gt 5us DIR JIR CCW tops Low Level lt 0 5V ENA ENA PUL DIR CW CCW Figure 11 Sequence chart of control signals Tel 44 0 1202 599922 10 MSD2278 Microstepping Driver Manual V1 0 Remark 1 tl ENA must be ahead of DIR by at least Sus logic HIGH as effective Generally ENA and ENA is NC not connected 2 t2 DIR must be ahead of PUL effective edge by at least 5us to ensure correct direction 3 t3 Pulse width not less than 1 2us 4 t4 Low level width not less than 1 2us 11 Protection Functions To improve reliability the driver incorporates some built in protection features Over voltage Protection When power supply voltage exceeds 250VAC protection will be activated and LED will turn red When power supply voltage is lower than 80VAC the driver will not works properly Short Circuit Protection Protection will be activated in case of short circuit between motor coils or between motor coil and ground Wrong Motor Connection Protection Protection will be activated when the motor is connected in a wrong way When above protections are active the motor shaft will be free or the LED will turn red Reset the driver by repowering it to make it function properly after removing above problems 12 Frequently Asked Questions In the event that your MSD2278 doesn t operate properly the first step is to identify whether the problem is electrical or mechanical in nature The next step is
4. drivers at high speed The microstep capability allows stepping motors to run at higher smoothness less vibration and lower noise Its 3 state current control technology allows coil current to be well controlled with relatively small current ripple therefore less motor heating is achieved Features Input frequency up to 400KHz Low heating for motor amp driver 16 microstep resolutions selectable Supply voltage up to220VAC Suitable for 2 phase and 4 phase stepping Output current up to 7 8A 5 57 ARMS motors TTL compatible and Opto isolated inputs DIP switch current setting Automatic idle current reduction CW CCW mode selectable High quality low price Applications Suitable for large and medium automation machines and equipments such as engraving machines labeling machines cutting machines laser phototypesetting systems plotting instruments NC machines pick place devices and so on Particularly adapt to the applications desired with low vibration high speed and high precision 2 Specifications Electrical Specifications Tj 25 C Tel 44 0 1202 599922 1 MSD2278 Microstepping Driver Manual V1 0 Mechanical Specifications unit mm inch 25 4 mm LL 143 8 l5253 176 Figure 1 Mechanical specifications Operating Environment and Other Specifications Elimination of Heat Avoid dust oil fog and corrosive gases 40 RH 90 RH
5. extend to any product damaged by reasons of improper or inadequate handlings by customer improper or inadequate customer wirings unauthorized modification or misuse or operation beyond the electrical specifications of the product and or operation beyond environmental specifications for the product Obtaining Warranty Service To obtain warranty service a returned material authorization number RMA must be obtained from our website at www motioncontrolproducts com returns html Customer shall prepay shipping charges for products returned to Motion ControlProducts for watranty service and Motion Control Products shall pay for return of products to customer Warranty Limitations Motion Control Products makes no other warranty either expressed or implied with respect to the product Motion Control Products specifically disclaims the implied warranties of merchantability and fitness fora particular purpose Some jurisdictions do not allow limitations on how long and implied warranty lasts so the above limitation or exclusion may not apply to you However any implied warranty of merchantability or fitness is limited to the 12 month duration of this written warranty Tel 44 0 1202 599922 13
6. to isolate the system component that is causing the problem As part of this process you may have to disconnect the individual components that make up your system and verify that they operate independently It is important to document each step in the troubleshooting process You may need this documentation to refer back to at a later date and these details will greatly assist our Technical Support staff in determining the problem should you need assistance Many of the problems that affect motion control systems can be traced to electrical noise controller software errors or mistake in wiring Tel 44 0 1202 599922 11 MSD2278 Microstepping Driver Manual V1 0 Problem Symptoms and Possible Causes Tel 44 0 1202 599922 Microstep resolution setting is wrong Fault condition exists Motor phases may be connected in reverse Control signal is interfered Something wrong with motor coil Current setting is too small Acceleration is set too high Inadequate heat sinking cooling Current is set too high 12 MSD2278 Microstepping Driver Manual V1 0 APPENDIX Twelve Month Limited Warranty Motion Control Products Ltd warrants its products against defects in materials and workmanship for a period of 12 months from shipment out of factory During the warranty period Motion Control Products will either at its option repair or replace products which proved to be defective Exclusions The above warranty does not
7. LING Sins ccf thee n rants steaheshachek ste ease A Nisin tetas Dynamic Ceni Sene ein e een em er atm ND Ar Slandstill Curt cites ccscs teehee teenie cawecees eee elie aad Control SienalWlOde Seino itis adicaetct etter an ER Se WIE NOIS oarn Contents DAVY iCal Conie oise a r A ores 10 10 Sequence Chart of Control Signals since eine A NEES 10 I PT OLE C MONEE UNG MOMS eaaa a ule eesee E aanenien 11 Over voltase PIOleCHOM msnen EO 11 SHOE C POETOE CU Oleee N auacutee 11 Wrong Motor Connection Protection cccccccccccccccccceeeeseeeseeseeeeeeesesessssaaaaeeeeeeees 11 12 Freguent Iy Asked Questions ser EE E OS 11 Problem Symptoms and Possible Causes 0 cccccccccccccsseccccceeeeeeeeeeeeeseseesesseeeeaas 12 APPENDIX coeur cee cease nae ees gctsdat one aes esapcanes esau aera 13 Twelve month limited Warran Vaere e ena E eee 13 CMU O e a a E E edema casted enn 13 ODtaiiii warra y SCTV ICE cear A 13 Marant iii tall ONS eaan a a casa ech eagesee ene 13 Shipping Tailed Product c53 sea toeteene net eee awn ae 13 II MSD2278 Microstepping Driver Manual V1 0 1 Introduction Features and Applications Introduction The MSD2278 is a high voltage and high performance microstepping driver based on one of the most advanced technologies in the world today It s suitable for driving 2 phase and 4 phase hybrid stepping motors By using advanced bipolar constant current chopping technique the MSD2278 can output more torque than other
8. User s Manual For MSD2278 High Performance Microstepping Driver Version 1 0 2007All Rights Reserved Attention Please read this manual carefully before using the driver The content in this manual has been carefully prepared and is believed to be accurate but no responsibility is assumed for inaccuracies Motion Control Products reserves the right to make changes without further notice to any products herein to improve reliability function or design Motion Control Products does not assume any liability arising out of the application or use of any product or circuit described herein neither does it convey any license under its patent rights of others Motion Control products general policy does not recommend the use of its products in life support or aircraft applications wherein a failure or malfunction of the product may directly threaten life or injury According to Motion Control Products terms and conditions of sales the user of Motion Control products products in life support or aircraft applications assumes all risks of such use and indemnifies Motion ControlProducts against all damages 2007 by Motion Control Products Limited All Rights Reserved Contents Table of contents 1 Introduction Features and Applications ccccccsessesessssssssccccecaeeeeeeeeeeeeeeeeeeeeeeees PATO C O Mea ee ee ates eae Ren E nPCRN eae re met en One Se eRe Cerra ed Meee Ee TE CAWUTCS etsy sicetrchicse Sakina nates de
9. ating supplied by motor manufacturer is important in selecting driver current however the selection also depends on leads and connections The first three bits SW6 7 8 9 of the DIP switch are used to set the dynamic current Select a setting closest to your motor s required current Dynamic Current Setting Tel 44 0 1202 599922 8 MSD2278 Microstepping Driver Manual V1 0 4 26 3 04 ON OFF OFF OFF 4 65 3 32 ON OFF OFF ON 5 18 3 70 ON OFF ON OFF 5 55 3 96 ON OFF ON ON 6 15 4 39 ON ON OFF OFF 6 60 4 71 ON ON OFF ON 7 20 5 14 ON ON ON OFF 7 80 5 57 ON ON ON ON Notes Due to motor inductance the actual current in the coil may be smaller than the dynamic current setting particularly under high speed condition Standstill Current The MSD2278 has automatic idle current reduction function The current automatically be reduced to 60 of the selected dynamic current setting 0 2 second after the last pulse Theoretically this will reduce motor heating to 36 due to P I R of the original value If the application needs a different standstill current please contact Motion Control Products Control Signal Mode Setting SW5 is used for this purpose SW5 ON means CW CCW pulse pulse mode and SW5 OFF means PUL DIR mode 8 Wiring Notes In order to improve anti interference performance of the driver it is recommended to use twisted pair shield cable To prevent noise incurred in pulse dir signal pulse direction
10. ere E ereengueaneuaasnsenaees APpliCaliONns s ocbacce Cale Reins ees ate ete anne ere De SOG Cid IC AUIOING A T rad AAE E E SE ea I A eatin a EET Ai aad FICC HICAl SPCCINCAMOIS recien TE tanacteenanmaduess Mechameal SPeCii CANONS a rarna actos oa ET Operating Environment and Other Specifications cccccccsssssssesssssssteeeeeeeeees imi atlOms OF ICAL sact ere aeaee ne Cue teat las Gtr ena A nate tree Gad 3 Pin Assignment and Description ccccccssssssssccceeceeeeeeeeeceeececeeeeeeeeeseeseeeseeeeeeeraaaas Connector Fil Con Our aon satires A O Connector P2 Contiouranons ores eaa eevee cei ees A Control sienal Connector PI IMtenace setae acteede Weta a a 5 ONNEC He LHC INI OLOT nepen nar Connections 10 4 lead Molor Sorrera eee Connections 10 6 lead MOIS cain nei Bosca ea Pali oth Cone uraOns x62 bencecatdeat 26 tagacseatirrp ca testaee Alesse wid at ee i aeeneetes Pull Coil Conmteuranions 2 23 20 5 6 sce E eee Soc eka Connections 10 5 lead MOLOIS eerren iain a aana Series CONNECHONS coris erae Oe a Ea Parallels Onn GE MOMS aapne Ueactenl a tterite Stent a eee eee ican O POWER SUPPLY SCICCH OM sais cest aracsinassasserseesascasCasneteruecoaaenteeeeetadecaansnataaeeadisreeedenes DEICCHING SUPPLY VO WAR E ner Sie wena eee ee Re 7 Selecting Microstep Resolution and Driver Output Current ccccceeeeseeeneeeees Microstep Resolution Selecto Iss crerrscer otere ere chicas e ate dates CUPTCIE SC UL
11. nfiguration is also referred to as full copper In full coil mode the motors should be run at only 70 of their rated current to prevent over heating Tel 44 0 1202 599922 5 MSD2278 Microstepping Driver Manual V1 0 P2 A 4 NC B B Figure 6 6 lead motor full coil higher torque connections Connections to 8 lead Motors 8 lead motors offer a high degree of flexibility to the system designer in that they may be connected in series or parallel thus satisfying a wide range of applications Series Connections A series motor configuration would typically be used in applications where a higher torque at lower speeds is required Because this configuration has the most inductance the performance will start to degrade at higher speeds In series mode the motors should also be run at only 70 of their rated current to prevent over heating P2 A B B Figure 7 8 lead motor series connections Parallel Connections An 8 lead motor in a parallel configuration offers a more stable but lower torque at lower speeds But because of the lower inductance there will be higher torque at higher speeds Multiply the per phase or unipolar current rating by 1 96 or the bipolar current rating by 1 4 to determine the peak output current Figure 8 8 lead motor parallel connections Tel 44 0 1202 599922 6 MSD2278 Microstepping Driver Manual V1 0 6 Power Supply Selection The MSD2278 can match large and medium size ste
12. pping motors from NEMA size 34 to 43 Supplies by Motion Control Products or other motor manufactures around the world To achieve good driving performances it is important to select supply voltage and output current properly Generally speaking supply voltage determines the high speed performance of the motor while output current determines the output torque of the driven motor particularly at lower speed Attention For safety and to improve reliability it is recommended to use isolation transformer instead of directly use network source to supply the MSD2278 Recommend use isolation transformers with theoretical output voltage of 80 180VAC leaving room for power fluctuation and back EMF And the power of the isolation transformer should larger than 500 watts Selecting Supply Voltage The MSD2278 can actually operate within 80V 220VAC including power input fluctuation and back EMF voltage generated by motor coils during motor shaft deceleration Higher supply voltage can increase motor torque at higher speeds thus helpful for avoiding losing steps However higher voltage may cause bigger motor vibration at lower speed and it may also cause over voltage protection or even driver damage Therefore it is suggested to choose only sufficiently high supply voltage for intended applications and it is suggested to use power supplies with theoretical output voltage of 80 180 VAC leaving room for power fluctuation and back EMF If the mo
13. signal wires and motor wires should not be tied up together It is better to separate them by at least 10 cm otherwise the disturbing signals generated by motor will easily disturb pulse direction signals causing motor position error system instability and other failures If a power supply serves several drivers separately connecting the drivers is recommended instead of daisy chaining It is prohibited to pull and plug connector P2 while the driver is powered ON because there is high current flowing through motor coils even when motor is at standstill Pulling or plugging connector P2 with power on will cause extremely high back EMF voltage surge which may damage the driver Tel 44 0 1202 599922 9 MSD2278 Microstepping Driver Manual V1 0 9 Typical Connection A complete stepping system should include stepping motor stepping driver power supply and controller pulse generator A typical connection is shown as figure 9 Controller Driver ENABLE R 0 if VCC 5V R 1K Power gt 0 125W if VCC 12V R 2K Power gt 0 125W if VCC 24V R must be connected to control signal terminal Figure 9 Typical connection 10 Sequence Chart of Control Signals In order to avoid some fault operations and deviations PUL DIR and ENA signals should abide by some rules shown as following diagram t 25us ts ti High Level gt 3 5V l PUL PUL CW Low Level lt 0 5V aes High Level gt
14. tion speed requirement is low it s better to use lower supply voltage to decrease noise heating and improve reliability 7 Selecting Microstep Resolution and Driver Output Current This driver uses a 9 bit DIP switch to set microstep resolution motor operating current and control signal mode as shown in the following figure Microstep Dynamic Resolution Current _ _ aS 1421314 5 617 8 9 PUL DIR or CW CCW selection Microstep Resolution Selection Microstep resolution is set by SW1 2 3 4 of the DIP switch as shown in the following table Tel 44 0 1202 599922 7 MSD2278 Microstepping Driver Manual V1 0 500 ox orr oN oN o Wy OFF OFF ON ON 000 ON ON Oo ON o 2o OF ON OFF ON 1600 ON CFF OFF YON 2000 OFF OFF OFF ON oe NON ONCE 3200 CFF ON ON OFF 40000 ON OFF ON OFF 5000 OFF OFF ON OFF 6000 ON ON CFF COFFE 6400 OFF ON OFF OFF O O S 10000 OF OFF OFF i OFF Current Settings For a given motor higher driver current will make the motor to output more torque but at the same time causes more heating in the motor and driver Therefore output current is generally set to be such that the motor will not overheat for long time operation Since parallel and serial connections of motor coils will significantly change resulting inductance and resistance it is therefore important to set driver output current depending on motor phase current motor leads and connection methods Phase current r
15. tput current 20mA It generally can be serial connected to PLC input terminal Z N P N GN Z 5 oO o 5 Nn Q Q O S Nn gd ge Nn 2 oN OQ VN WN rj rj 5 oO o 5 Nn gz Z eS z zs oN 9 O O J N O z g we ort a pm N Ground terminal Recommend connect this port to the ground for better safety 5 p MAN aN Ne NO NO Nn O O O NO NO 09 MSD2278 Microstepping Driver Manual V1 0 4 Control Signal Connector P1 Interface The MSD2278 can accept differential and single ended input signals including open collector and PNP output The MSD2278 has 3 optically isolated logic inputs which are located on connector P1 to accept line driver control signals These inputs are isolated to minimize or eliminate electrical noises coupled onto the drive control signals Recommend use line driver control signals to increase noise immunity of the driver in interference environments In the following figures connections to open collector and PNP signals are illustrated Driver vcc R 0 if VCC 5V R 1K Power gt 0 125W if VCC 12V R 2K Power gt 0 125W if VCC 24V R must be connected to control signal terminal Controller Figure 3 Connection to PNP signal common cathode 5 Connecting the Motor The MSD2278 can drive 2 pahse and 4 pahse hybrid stepping motors
Download Pdf Manuals
Related Search