ST PractiSPIN UM0696 User Manual Download Page 4

   

   

   

System overview

UM0696

4/15

 Doc ID 15599 Rev 2

1 System 

overview

The purpose of this document is to illustrate the operation of the complete system made up 
by a module specific demonstration board (target board), the control board PractiSPIN™, 
the SW PractiSPIN™.spmd and a stepper motor. For details concerning PractiSPIN™, 
STEVAL-SPMD250V1, STEVAL-SPMD250V2, STEVAL-SPMD150V1 and STEVAL-
SPMD150V2, please refer to the specific application notes.

To be operated the target board needs two supply voltages and a stepper motor connected 
to the proper connectors.

Through the control board and friendly user interface the PractiSPIN™.spmd system 
supports the following measurements and demonstrations:

to drive the module with normal or half step sequence

to select the current recirculation mode

slow decay

fast decay

to change the motor rotation

forward

reverse

to fix the acceleration and deceleration ramp and the running speed

to differentiate the motor current during the ramp

normal working mode

steady state mode

A sequence of moving and waiting times can be fixed and repeated indefinitely.

Note:

For a detailed description of the control boards please refer to the PractiSPIN™ application 
note.

Summary of Contents for PractiSPIN UM0696

Page 1: ...communicates with the PC and the PractiSPIN spmd software via a serial COMM port and a module specific demonstration board target board that connects to the ST7 interface board via a standard 34 pin r...

Page 2: ...Rev 2 Contents 1 System overview 4 2 Starting PractiSPIN spmd 5 3 Stepper motor driver 7 3 1 Constant speed mode 7 3 2 Indexing mode 9 4 STEVAL SPMD250V1 STEVAL SPMD250V2 10 5 STEVAL SPMD150V1 STEVAL...

Page 3: ...bration window 6 Figure 4 PractiSPIN spmd constant speed mode window 7 Figure 5 PractiSPIN spmd indexing mode window 9 Figure 6 STEVAL SPMD250V1 STEVAL SPMD250V2 demonstration system 10 Figure 7 STEVA...

Page 4: ...s and a stepper motor connected to the proper connectors Through the control board and friendly user interface the PractiSPIN spmd system supports the following measurements and demonstrations to driv...

Page 5: ...vision code of the firmware currently stored in the Flash memory of the ST7 and determine if the correct version of firmware resides in the ST7 If the PractiSPIN spmd software detects that a firmware...

Page 6: ...3 Calibration window To null out the offset click on calibrate zero for details please refer to the specific target board section To set the maximum current click on calibrate max for details please r...

Page 7: ...ilable when using the STEVAL SPMD150STP Device selection in the device selection box select the device being evaluated Direction in the direction box click the toggle switch to pick forward or reverse...

Page 8: ...ible to set the deceleration current lower Holding current set the holding current to 25 Whenever the motor is stopped after a run this level of current circulates in the motor so that it holds positi...

Page 9: ...ou can enter up to twelve indexed movements in the box and the wait time between each movement When started the software executes each movement by accelerating up to the peak speed moving the required...

Page 10: ...ctor Apply motor voltage VS to P2 connector Launch the PractiSPIN spmd program on the host PC Click on connect to ST7 hardware and perform calibration Click on calibrate zero and verify that VTP3 is z...

Page 11: ...1 SPMD250STP GND 1 SYNC 2 RESET 3 HALF FULL 4 HOME 5 STEPCLOCK 6 CW CCW 7 OSC 8 Io_SET 9 CONTROL 10 ENABLE 11 VSS 12 GND 13 PHD 14 PHC 15 PHB 16 PHA 17 VS 18 P1 1 2 P2 1 2 P3 1 2 U2A 74HC14 1 2 DIAG E...

Page 12: ...nnect to ST7 hardware and perform calibration Click on calibrate zero and trim R18 on control board until voltage on VREFA and VREFB is zero Click on calibrate max and set the maximum current correspo...

Page 13: ...9 10 11 12 13 14 15 16 17 19 21 23 25 26 27 28 29 30 31 32 33 34 18 20 22 24 5V P1 1 2 P2 1 2 P3 1 2 C10 100nF RES C16 N M RV3 N M R6 22K JR5 GND C11 220nF 16V R5 2 2K VS U2 ST3232 C1 3 C2 4 C2 5 V 6...

Page 14: ...Revision history UM0696 14 15 Doc ID 15599 Rev 2 6 Revision history Table 1 Document revision history Date Revision Changes 08 May 2009 1 Initial release 19 Oct 2009 2 Inserted new board part numbers...

Page 15: ...ARRANTIES OF MERCHANTABILITY FITNESS FOR A PARTICULAR PURPOSE AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION OR INFRINGEMENT OF ANY PATENT COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT UNLE...

Reviews: