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1. it is important to have large current output rating to avoid problems like current clamp for example using 4A supply for 3A motor driver operation On the other hand if unregulated supply is used one may use a power supply of lower current rating than that of motor typically 50 70 of motor current The reason is that M415B Micro Microstepping Driver Manual V2 0 the driver draws current from the power supply capacitor of the unregulated supply only during the ON duration of the PWM cycle but not during the OFF duration Therefore the average current withdrawn from power supply is considerably less than motor current For example two 3A motors can be well supplied by one power supply of 4A rating Multiple Drivers It is recommended to have multiple drivers to share one power supply to reduce cost if the supply has enough capacity To avoid cross interference DO NOT daisy chain the power supply input pins of the drivers Instead please connect them to power supply separately Selecting Supply Voltage The power MOSFETS inside the M415B can actually operate within 15V 40VDC 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 damage2. r a Cte ee a E EE N 8 9 Typical C OMe CLI ONS sae eani eea eera aN Oraa EAN a Cara aa T A SEa a 9 10 Seguence Chartof Control Sienai vecaa a AA 9 PTs rahe non T Un A eena R A 10 12 Frequently Asked Ouestons annaa E E 10 Problem Symptoms and Possible Causes ccsssssessseseeeesesesssessssssseeseeees 11 DERT ND naaa Te ee OER ny SiON Or EADS SOR RM SITU OI Ror RIESE ONY Neri MICROM Ne Tr ROVER 12 Twelve Month Limited Warranty cccccccccccccccccceccceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeesseeeess 12 EXCLUSIONS 5a tan ganeessctac cece Meusactsbacchen eteaactasancuan Marea O Moana 12 Obtains Warranty Service sonics cewocrstens monte Wort norte mnt oactets 12 Waranty AsimMita Ons ccchy occu foc A tec e ct eee ence ete tae cece heseer 12 Snipp Malle CO PPOAUCDs ccitoewenactowaieheowesactommictenwesactaumicheotesactoumieteomesactouts 12 M415B Micro Microstepping Driver Manual V2 0 1 Introduction Features and Applications Introduction The M415B is a very small size high performance microstepping driver based on one of the most advanced technologies in the world today It s suitable for driving any 2 phase and 4 phase hybrid stepping motors By using advanced bipolar constant current chopping technique it can output more speed and power from the same motor compared with traditional drivers such as L R drivers Features High performance low cost Mixed decay current control for less motor Supply voltage up to 40VD
3. set the dynamic current Select a setting closest to your motor s required current Dynamic current setting Peakeurrent A SWE SW2 0 SW a OFF ON ON 0AA ON OFF ON 063A OFF OFF ON 084A ON ON OFF i ae OFF ON OFF 126A ON OFF OFF SSS OFF OFF OFF Notes Due to motor inductance the actual current in the coil may be smaller than the dynamic current settings particularly under high speed condition Standstill Current The standstill current of the M415B will automatically be reduced to 60 of the selected dynamic current setting one 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 Rayne Motors 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 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 Ifa power supply serves several drivers separately connecting the drivers is recommended M415B Micro Microstepping Driver Manual V2 0 instead of daisy chaining It is prohibited to pull and plug connector P2 while th
4. C heating Output current up to 1 5A 7 selectable microstep resolutions 1 2 4 8 Inaudible 20 KHz chopping frequency 16 32 64 TTL compatible and optically isolated input Suitable for 2 phase and 4 phase motors signals Protection against power leads reversal Automatic idle current reduction Small size 86 55 20mm Applications Suitable for a wide range of stepping motors from NEMA size 14 to 23 which used in various kinds of machines such as X Y tables labeling machines laser cutters engraving machines pick place devices and etc It s specially adapted to the applications desired with low vibration high speed and high precision 2 Specifications Electrical Specifications Tj 25 C 1 2 4 8 16 32 64 M415B Micro Microstepping Driver Manual V2 0 Operating Environment and Other Specifications Mechanical Specifications unit mm inch 25 4 mm Avoid dust oil fog and corrosive gases 40 RH 90 RH Vibration 5 9m s Max Approx 150 gram 5 3 oz Environment Humidity Figure 1 Mechanical dimensions Recommend use side mounting for better heat dissipation Elimination of Heat Driver s reliable working temperature should be lt 65 C motor working temperature should be lt 80 C Recommend use automatic half current mode namely current automatically be reduced to 60 when motor stops so as to decrease driver heating and mo
5. 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 24 36V leaving room for power fluctuation and back EMF 7 Selecting Microstep Resolution and Driver Output Current This driver uses a 6 bit DIP switch to set microstep resolution and motor operating current as shown below Dynamic Wicrostep Current Resolution 1121314 5 6_ Microstep Resolution Selection Microstep resolution is set by SW4 SW 5 SW 6 of the DIP switch as shown in the following table aN ON ON ee orr ON ON ON OFF ON OFF OFF ON ON ON OFF OFF ON OFF ON OFF OFF M415B Micro Microstepping Driver Manual V2 0 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 rating supplied by motor manufacturer is important in selecting driver current however the selection also depends on leads and connections The first three bits SW1 2 3 of the DIP switch are used to
6. User s Manual For M415B Micro Microstepping Driver Version 2 0 2000 All 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 Rayne Motors reserves the right to make changes without further notice to any products herein to improve reliability function or design Rayne Motors 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 Rayne Motors 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 Rayne Motors terms and conditions of sales the user of Rayne Motors products in life support or aircraft applications assumes all risks of such use and indemnifies Rayne Motors against all damages Contents Table of Contents 1 Introduction Features and Applications ccccccccccecceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeees l HOC IO a EE E E E are EEE l FP CAUUIOS oaei T a T Me ad oaths l PRD DNC ALOIS ec TATEA OTARA OTETA OTA EEA TOT EE O l De DEC MIC ALIONS tenrian E l Elecmeal SPeCIl CAMONS anan N ee ee eee l Operating Environment and Other Specifications ccccccccccccc
7. cccceeeeeeeeeeeeeeeeeees 2 Mechanical SPECT CAllONG aereoa ea a E AO EETA 2 je Uiaevharcin 6 ekg Ge Hedbenns n R a 2 3 Pin Assionment and Description sccd con sininw sion onion ow ee oo 3 Connector Pl Conmiguravions sson oes 3 Connector P22 Conneuranons 4 4 4 28 eat etl ead etl ea etl ee et as 3 4 Control Signal Connector P1 Interface ccc ccccccccceeeeeeeeeeeeeeeeeeeeeeeeseeeeseeeeess 3 3C INI CHNO DE MOO menn a teas aun cge tuencagu sauna ea ten aguetamageu tne cuuek 4 Connections 10 4 lead Motors tai cicuis Ai Adie i a 4 COnneCHOns 10 6 lead MOOS ccena Gone cenessiaaat 5 Half Coil COMIC URAIOMS 5525 od etek ack ead tied ack a ask ead eaten dak ead tet 5 Pull Oat ON MOUTAONS sacra uc ohetace tener rsa eae 5 Connections to lead Motors siicicookoiauiniieh ike E E 5 SECS C ONMSCHONS aeea A A A 5 Parallel Ge OMMCC HONS corrien aE EEEE 6 Ox POWer SUPPI VOC IEC ON An cast a E r r O 6 Regulated or Unregulated Power Supply nnnnnnnnennennnenereereersrerrrerrrrrrrrrrreeeeen 6 ALEI SAD eRe i PE E A A E E E E E eg E E E E E E 7 Selec ne Supply Volat vescu cneni uei a a a E O eed 7 7 Selecting Microstep Resolution and Driver Output Current ccccceeeeeeeeees 7 Microstep Resolution Selection seniecsaicocniai n E E AEE 7 Current eN OG ord AA E EEE OER 8 Dynamic Current Setting siccacvndesslenrsvacnsardeaedeatiasncenianstenivactemtiaclaasianueuiendss 8 Contents Sand AEC UN Ota A EA 8 SVI E NOE S
8. e 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 9 Typical Connections A complete stepping system should include stepping motor stepping driver power supply and controller pulse generator The following figures are two typical connections of the M415B Controller 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 with open collector controller Controller VCC e PUL PUL 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 10 Typical connection with difference controller 10 Sequence Chart of Control Signals In order to avoid some fault operations and deviations PUL DIR and ENA should abide by some rules shown as following diagram M415B Micro Microstepping Driver Manual V2 0 tous tye tye k High Level gt 3 5V PUL I I I l l L i i J La High Level gt 3 5V TE za i p 4 Low Level lt 0 5V it ZOUS i DIR 2 t 5ps j lt i IE Low Level lt 0 5V I I I ENA Figurel1 Sequence chart of control signals Notes 1 t ENA must be ahead o
9. e 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 At A 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 configuration 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 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 M415B Micro Microstepping Driver Manual V2 0 degrade at higher speeds In series mode the motors should also be run at only 70 of their rated current to prevent ove
10. f DIR by at least Sus Usually ENA and ENA are NC not connected See Connector P1 Configurations for more information 2 tz DIR must be ahead of PUL effective edge by at least 5us to ensure correct direction 3 t3 Pulse width not less than 1 5us 4 ty low level width not less than 1 5us 11 Protection Function The M415B incorporates power leads reversal protection function to protect the M415B damaged by power leads reversal 12 Frequently Asked Questions In the event that your M415B doesn t operate properly the first step is to identify whether the problem is electrical or mechanical in nature The next step is 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 M415B Micro Microstepping Driver Manual V2 0 M415B Micro Microstepping Driver Manual V2 0 Problem Symptoms and Possible Causes APPENDIX Twelve Month Limited Warranty Microstep resolution settin
11. g is wrong DIP switch current setting is wrong Rayne Motors warrants its products against defects in materials and Fault condition exists workmanship for a period of 12 months from shipment out of factory During the warranty period The driver is disabled Rayne Motors will either at its option repair or replace products which proved to be defective Motor phases may be connected in reverse e ar AE Exclusions Vir Switch current setting 1s yng someting wrong with motor coil The above warranty does not extend to any product damaged by reasons of improper or inadequate Control signal 1s too weak handlings by customer improper or inadequate customer wirings unauthorized modification or Control signal 1s interfered misuse or operation beyond the electrical specifications of the product and or operation beyond Wrong motor connector environmental specifications for the product Something wrong with motor coil rrent setting is too small losing steps Obtaining Warranty Service Current setting is too small a Lite ee or eee Secs To obtain warranty service a returned material authorization number RMA must be obtained RC a from customer service before returning product for service Acceleration is set too high ae eee Customer shall prepay shipping charges for products returned to Rayne Motors for warranty service sun rolt and Rayne Motors shall pay for return of products to customer Inadequate heat sinking cooling Current is set too
12. high Rayne Motors makes no other warranty either expressed or implied with respect to the product Rayne Motors specifically disclaims the implied warranties of merchantability and fitness for a 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 Shipping Failed Product If your product fail during the warranty period e mail customer service to obtain a returned material authorization number RMA before returning product for service Please include a written description of the problem along with contact name and address Send failed product to Rayne Motors Also enclose information regarding the circumstances prior to product failure
13. igure connections to open collector and difference controller are illustrated M415B Micro Microstepping Driver Manual V2 0 Controller 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 2 Connections to open collector signal common anode Controller 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 3 Connections to difference control signal 5 Connecting the Motor The M415B driver can drive any 2 pahse and 4 pahse hybrid stepping motors 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 A B B Figure 4 4 lead Motor Connections M415B Micro Microstepping Driver Manual V2 0 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 th
14. r 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 6 Power Supply Selection The M415B can match medium and small size stepping motors from NEMA size 14 to 23 made by Rayne Motors 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 Higher supply voltage will allow higher motor speed to be achieved at the price of more noise and heating If the motion speed requirement is low it s better to use lower supply voltage to decrease noise heating and improve reliability Regulated or Unregulated Power Supply Both regulated and unregulated power supplies can be used to supply the driver However unregulated power supplies are preferred due to their ability to withstand current surge If regulated power supplies such as most switching supplies are indeed used
15. tor heating Recommend use side mounting to maximize heatsink area M415B Micro Microstepping Driver Manual V2 0 3 Pin Assignment and Description The M415B 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 M415B More detailed descriptions of the pins and related issues are presented in section 4 5 9 Connector P1 Configurations when 1zV or 24V used Direction signal HIGH LOW level signal correlative to motor rotation direction For reliable response DIR must be ahead of PUL by 5us at least 4 5V when DIR HIGH 0 0 5V when DIR LOW Motor rotation direction also depends upon the connection of the motor windings exchange any motor phase can reverse motor rotation direction Enable signal This signal is used for enabling disabling driver High level for enabling driver and low level for disabling driver Usually left unconnected enabled Connector P2 Configurations DC power supply 15 40VDC Including voltage fluctuation and EMF voltage Motor Phase B 4 Control Signal Connector P1 Interface The M415B uses opto couplers to increase noise immunity and interface flexibility If the opto couplers supply voltage is higher than 5V a current limiting resistor needs to be connected at each input signal to prevent overheating the opto couplers In the following f
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