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Associate II
January 27, 2018
Question

Stall Detection in L6472

  • January 27, 2018
  • 1 reply
  • 728 views
Posted on January 27, 2018 at 10:11

Is it theoretically possible to use the stall detection in the L6472?

According to the data sheet, this function is not available, but what if I write the register h14 and read the status register (bit 13, bit 14)?

Microstepping over 1/16 (1/64) also seems to be possible when I set it.

#stall-detection-l6472
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1 reply

Cristiana SCARAMEL
Cristiana SCARAMEL
Technical Moderator
February 2, 2018
Posted on February 02, 2018 at 08:52

The sensorless stall detection – present in the L6470 - is not available in the L6472 due to the current control algorithm used.

To understand the working principle of this feature please refer to

http://www.st.com/resource/en/application_note/dm00075650.pdf

at page 14 (Stall detection paragraph).

The h14 register have a RESERVED address and it should never be used. The bit 13 and 14 of STATUS register do not have a significant value.

Concerning the microstepping any value in the STEP_MODE register with Bit2 of STEP_SEL parameter set to ‘1’ is translated as 1/16 microstep.
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