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User

’s Manual

 

For

 

DM860I

 

 

Fully Digital Stepper Drive

 

 

Version 1.0 

Designed by StepperOnline® 

 

             

 

 

 

 

 
 

                              

 

 

 

 

©2017 All Rights Reserved 

 
Web site

www.omc-stepperonline.com 

 

 

                                                            

E-Mail: 

[email protected] 

     

 

 
 

 
 
 

Summary of Contents for DM860I

Page 1: ...User s Manual For DM860I Fully Digital Stepper Drive Version 1 0 Designed by StepperOnline 2017 All Rights Reserved Web site www omc stepperonline com E Mail sales stepperonline com ...

Page 2: ...nnecting the Motor 4 Connections to 4 lead Motors 4 Connections to 6 lead Motors 4 Half Coil Configurations 4 Full Coil Configurations 5 Connections to 8 lead Motors 5 Series Connections 5 Parallel Connections 5 6 Power Supply Selection 6 AC or DC Power Supply 6 Multiple Drives 6 Selecting Supply Voltage 6 7 Selecting Microstep Resolution and Drive Output Current 6 Microstep Resolution Selection 6...

Page 3: ...gher microstep output thus offers smoother motor movement 16 selectable microstep resolutions including 400 800 1600 3200 6400 12800 25600 51200 1000 2000 4000 5000 8000 10000 20000 40000 Soft start with no jump when powered on Input voltage 20 80VDC 8 selectable peak current including 2 40A 3 08A 3 77A 4 45A 5 14A 5 83A 6 52A 7 20A Pulse input frequency up to 200 KHz TTL compatible and optically ...

Page 4: ...oz Mechanical Specifications unit mm 1inch 25 4mm Figure 1 Mechanical specifications Recommend use side mounting for better heat dissipation Elimination of Heat Drive s reliable working temperature should be 45 113 and motor working temperature should be 80 176 It is recommended to use automatic idle current mode namely current automatically reduce to 50 when motor stops so as to reduce drive heat...

Page 5: ...0 0 5V when PUL LOW In CCW mode set by inside jumper CN6 this input represents clockwise CW pulse For reliable response pulse width should be longer than 2 5μs PUL ENA Enablesignal This signal is used for enabling disabling the drive High level NPN control signal PNP and differential control signals are on the contrary namely low level for enabling for enabling the drive and low level for disablin...

Page 6: ...d 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 drive output current multiply the specified phase current by 1 4 to determine the peak output current Figure 5 4 lead Motor Connections Connections to 6 lead Motors Like 8 lead stepping motors 6 lead motors have two configurations...

Page 7: ...allel 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 Fi...

Page 8: ... 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 Drives It is recommended to have multiple drives to share one power supply to reduce cost if the supply has enough capacity To avoid cross interfer...

Page 9: ...n Since parallel and serial connections of motor coils will significantly change resulting inductance and resistance it is therefore important to set drive output current depending on motor phase current motor leads and connection methods Phase current rating supplied by motor manufacturer is important in selecting drive current however the selection also depends on leads and connections The first...

Page 10: ...eld cable To prevent noise incurred in PUL 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 If a power supply serves several drives separately connecti...

Page 11: ...mation b t2 DIR must be ahead of PUL effective edge by 5 s to ensure correct direction c t3 Pulse width not less than 2 5 s d t4 Low level width not less than 2 5 s 11 Protection Functions To improve reliability the drive incorporates some built in protections features When above protections are active the motor shaft will be free or the red LED blinks Reset the drive by repowering it to make it f...

Page 12: ...tems can be traced to electrical noise controller software errors or mistake in wiring Problem Symptoms and Possible Causes Symptoms Possible Problems Motor is not rotating Motor rotates in the wrong direction The drive in fault Erratic motor motion Motor stalls during acceleration Excessive motor and drive heating No power Microstep resolution setting is wrong DIP switch current setting is wrong ...

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