Problems with Calibration _sequence using AMS5048A

Support
1

Hi, im having issue with absolute SPI encoders AMS5048A

i was getting “no index found error” with those so
i had configured odrive to work with them using:

odrv0.axis0.encoder.config.use_index = False

but when im running:

odrv0.axis0.requested_state = AXIS_STATE_FULL_CALIBRATION_SEQUENCE

i get

  encoder: Error(s):
    EncoderError.CPR_POLEPAIRS_MISMATCH

even though i configured odrive to 7 polepairs (D5065 motors), and i have configured CPR to 2**14(16384).

I checked state of encoders via odrv0.axis0.encoder.shadow_count
and they are in fact when i am turning them by hand starting from aprrox index 0 go to index aprrox 16400ish in one motor rotation. (when running calibration they go from -1000 to 34000)

Also important to note that i replaced encoder few times and that motor did work with incremental encoder from CUI

Edit. typo.

2

Hi there,

Apologies for the delay in my reply.

Which ODrive is this? Can you post a picture of how the encoders are mounted and wired, and how the motor is mounted on the motor? Are you using the encoder over SPI, or A/B/Z?