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AN3991 Datasheet(PDF) 2 Page - STMicroelectronics

Part # AN3991
Description  How to drive multiple stepper motors with the L6470 motor driver
PDF  15 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN3991 Datasheet(HTML) 2 Page - STMicroelectronics

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Contents
AN3991
2/15
DocID022332 Rev 2
Contents
1
Hardware requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2
Software requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3
Software installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4
Interconnection diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5
Stepper motor characterization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
6
Running the motor evaluation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
7
Controlling three motors individually . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
7.1
Individual motor position control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
7.2
Individual motor speed control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
8
Controlling three motors with scripts . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Three_motors script text . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Appendix A Additional instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Motor back EMF constant (Ke) measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
9
References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
10
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15



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