Stellaris® Stepper Motor RDK User’s Manual
November 4, 2009 3
Table of Contents
Chapter 1: Stellaris® Stepper Motor Reference Design Kit Overview.........................................................9
Using the RDK.................................................................................................................................................... 9
Features.............................................................................................................................................................. 9
Motor Technology.............................................................................................................................................10
Introduction to Stepper Motors...................................................................................................................... 10
Chopper Control............................................................................................................................................ 11
RDK Specifications........................................................................................................................................... 12
Electrical .......................................................................................................................................................12
Mechanical.................................................................................................................................................... 12
Chapter 2: User Interfaces............................................................................................................................. 13
On-board User Interface...................................................................................................................................13
Speed Mode..................................................................................................................................................14
Position Mode ............................................................................................................................................... 14
Graphical User Interface................................................................................................................................... 15
File Menu ...................................................................................................................................................... 18
Configuration Window................................................................................................................................... 18
Chapter 3: Hardware Description.................................................................................................................. 21
Block Diagram .................................................................................................................................................. 22
Functional Description ...................................................................................................................................... 22
Microcontroller (Schematic Pages 1-2)......................................................................................................... 22
Output Power Stage (Schematic Page 3)..................................................................................................... 23
Control Interfaces (Schematic Page 4)......................................................................................................... 24
Software............................................................................................................................................................ 24
Chopper Control............................................................................................................................................ 24
Parameter Reference.................................................................................................................................... 26
Serial Protocol .................................................................................................................................................. 26
Appendix A: Parameters................................................................................................................................27
Parameter Descriptions ....................................................................................................................................27
Motor Running Configuration........................................................................................................................ 28
Target Position..........................................................................................................................................28
Maximum Current ..................................................................................................................................... 28
Target Speed ............................................................................................................................................ 28
Acceleration .............................................................................................................................................. 28
Deceleration.............................................................................................................................................. 29
Motor Drive Configuration............................................................................................................................. 29
Winding Resistance .................................................................................................................................. 29
PWM Frequency ....................................................................................................................................... 29
Fixed Rise Time........................................................................................................................................ 29
Drive Current.............................................................................................................................................30
Holding Current......................................................................................................................................... 30
Control Mode ............................................................................................................................................30
Decay Mode.............................................................................................................................................. 31
Step Mode................................................................................................................................................. 31
Off Blanking Time ..................................................................................................................................... 31
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