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CCS/BOOSTXL-DRV8305EVM: Ventilator/ InstaSpin Sensored Inertia ID issues (Lab12a and so on)

Luis Medina46540
Prodigy 10 points
Part Number: BOOSTXL-DRV8305EVM
Other Parts Discussed in Thread: MOTORWARE, , TMS320F28069M

Tool/software: Code Composer Studio

Hi everyone, I´m developing a motion profile in order to control a BLDC motor from MaxonGroup (574741)+ Gear (223093) + Encoder 500 lines (110518) using Motorware 1.01.00.18 with a TMS320F28069M LaunchPad and the BoostXL-DRV8305EVM. I already defined the electrical and mechanical variables trough the Lab05e (Rs, Lsd, Lsq, Inertia, Friction) and the speed runs ok at low speed (2.0krpm), when I change to Lab12a - Sensored Inertia ID the VelldErrorID send and error 2004, I changed to different values but the motor+gear don´t motion. I think the gear has a high inertia al low speed and it´s probably part of the error, what other parameters do I have change in order to star identifying the motor with the incremental encoder?  

These are the motor parameters in the user_j1.h file:

I´m sending the motor + gear + encoder datasheets and a foto of the system

Motor-574741.pdfGear-223093.pdf

  • 0
    TI__Guru** 115420 points

    Since the motor parameters can be identified through lab02b/c and the inertia can be detected through lab05e, that means the sensorless InstaSPIN-motion for the motor worked well on the kit with the identification settings. The issue should be from the connections of the motor and encoder, please make sure that both motor and encoder wires are connected in the correct order and the number of lines on the encoder is set properly as well.

    The A, B and I output signals of the encoder must be connected to the A, B and I of the interface on LaunchPad, and the U/A, V/B, and C/W phase connections need to be connected to the interface of the inverter board accordingly. You might try to switch the U/A, V/B and C/W wires order of the motor if you still have a problem to run the motor.

  • 0 in reply to Yanming Luo
    TI__Guru** 115420 points

    Sorry, I just find the datasheet of the motor you posted. The sensored instaSPIN-Motion (lab12a and lab12x) can't spin this motor since its position sensor is a hall-effect sensor, not an incremental encoder. You have to spin the motor with sensorless InstaSPIN-FOC or sensorless InstaSPIN-Motion.