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©I.CH Motion® 2020

 

                                                 

ichmo

.com

 

Specifications subject to change without notice.

 

Owner's Guide: 3P20M Hybrid Stepper Motor Driver

 

Page 9

TECHNICAL DOCUMENT

 

 

Selecting Supply Voltage:

 

 

The  power  MOSFETS  inside  the  3L583M  can  actually  operate  within  +18

50VDC,  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 +24

+ 45V, leaving room for power fluctuation and back-EMF.

 

 
 

9. Output Current and Microstep Resolution Settings

 

 

Current Setting

 

 

For a given motor, higher driver current will make the motor 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. Phase current rating supplied 
by motor manufacturer is important in selecting driver current, however the selection also depends on leads and connections.

 

 

DIP Setting for Dynamic Current

 

 

The 3P20M uses an 8-bit DIP switch to set motor dynamic current, standstill current and microstep resolution, as shown below:

 

 
 
 
 
 

The first four bits (SW1, 2, 3, 4) of the DIP switch are used to set the dynamic current. Select a setting closest to your motor’s required current.

 

 

Peak current (A)

 

RMS (A)

 

SW1

 

SW2

 

SW3

 

2.1

 

1.5

 

OFF

 

OFF

 

OFF

 

2.5

 

1.8

 

ON

 

OFF

 

OFF

 

2.9

 

2.1

 

OFF

 

ON

 

OFF

 

3.2

 

2.3

 

ON

 

ON

 

OFF

 

 
 
 
 
 
 
 
 

Summary of Contents for 3P20M

Page 1: ...Page 1 OWNER S GUIDE 3P20M HYBRID STEPPER MOTOR DRIVER 2020 by I CH Motion Co Ltd All Rights Reserved TECHNICAL DOCUMENT...

Page 2: ...ontact us 1 Introduction 3 2 Feature 3 3 Specification 4 4 Operating Environment and Parameters 4 5 Definition of Pin Signal 5 6 Connections to Controller 7 7 Connecting the Motor 8 8 Power Supply Sel...

Page 3: ...epper motor whose effect is like servo motor These drivers have multiple subdivisions range of current If you have any interest please contact us 2 Feature Voltage can up to 50VDC Pulse frequency up t...

Page 4: ...0M Parameters Min Typical Max Unit Output current 2 1 8 3 5 9 RMS A Supply voltage 20 36 50 VDC Logic signal current 7 10 16 mA Pulse input frequency 0 300 kHz Isolation resistance 500 M Cooling Natur...

Page 5: ...ulse signal effective for each rising edge 4 5V when PUL HIGH 0 0 5V when PUL LOW In double pulse mode pulse pulse this input represents clockwise CW pulse effective for high level For reliable respon...

Page 6: ...R137 a 0 resistor to R136 besides setting J1 and let R137 NC open circuit Connector P2 Configurations Pin Function Details GND DC power ground VDC DC power supply 20VDC 50VDC Including voltage fluctua...

Page 7: ...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 control...

Page 8: ...ating 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 unregula...

Page 9: ...ical output voltage of 24 45V leaving room for power fluctuation and back EMF 9 Output Current and Microstep Resolution Settings Current Setting For a given motor higher driver current will make the m...

Page 10: ...motor inductance the actual current in the coil may be smaller than the dynamic current settings particularly under high speed condition DIP Setting for Standstill Current SW5 is used for this purpos...

Page 11: ...sturb 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 da...

Page 12: ...Hybrid Stepper Motor Driver Page 12 TECHNICAL DOCUMENT Figure 6 Typical connection 12 Sequence Chart of Control Signals In order to avoid some fault operations and deviations PUL DIR and ENA signals...

Page 13: ...ver voltage protection function is active the user should repower the driver to reset the driver Short voltage Protection When power supply voltage is lower than 18VDC the Green LED will turn off and...

Page 14: ...mistake in wiring Symptoms Possible Problems No power Microstep resolution setting is wrong DIP switch current setting is wrong Fault condition exists Motor is not rotating The driver is disabled Mot...

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