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How to use Instaspin BLDC run BLDC motor

user4708725
Expert 1030 points
Other Parts Discussed in Thread: CONTROLSUITE, INSTASPIN-BLDC

The software path I used:     D:\ti\controlSUITE\development_kits\DRV830x-HC-C2-KIT_v105\InstaSPIN_BLDC

1.  when I drive the maxon motor, The motor couldn't start. When EnableFlag=1 and RunMotor=1, the motor quivered and stopped.

How to modify the program to make the motor start normally?
Maxon parameters are as follows:

Nominal voltage V                                                               24
No load speed rpm                                                              60800
No load current mA                                                             282         
Nominal speed rpm                                                             57500
Nominal torque (max. continuous torque) mNm     23.6
Nominal current (max. continuous current) A            6.45
Stall torque mNm                                                                 561
Stall current A                                                                        149
Max. efciency %                                                                      91.6
Terminal resistance   Ohm                                                  0.161
Terminal inductance mH                                                    0.0171
Torque constant mNm/A                                                   3.76
Speed constant rpm/V                                                        2540
Speed/torque gradient rpm/mNm                                 109
Mechanical time constant ms                                           2.04
Rotor inertia gcm                                                                  1.79

2.I increase and tune the startup parameters in BLDC-Settings.h,But the motor still can't start. How should the following two start variables be valued?

#define BEGIN_START_RPM 50.0
#define END_START_RPM 100.0

 


 

  • 0
    TI__Guru** 115500 points

    1. As replied to your another post, the instaSPIN-BLDC doesn't care the motor parameters, but you need to design an appropriate voltage sampling circuit to achieve good resolution for sensing BEMF.

    2. Please follow the reference guide to tune the related parameters, and it's better for you to start from build level 1 as well.

    Btw, could you please post some current waveforms and have a detailed description of your question that should help us to understand and solve your questions? Thanks.

  • 0 in reply to Yanming Luo
    TI__Guru** 115500 points

    Just wanted to check in and see if there is any update from your side, I haven’t heard from you for a week, so I’m assuming you were able to resolve your issue. Please let me know if you have any questions. We would like to close this thread if no further questions. Thanks.