TMC2240 Eval Kit Maximum Velocity Setting

Question

Dear ADI Support, 
 I just started evaluating the TMC2240 Eval Kit. I am looking for a way to change the default "Maximum Velocity" setting. By default it is set to 150000, the maximal possible setting is 8300096. 
 
 Thanks in advance and best Regards.

BernhardDwersteg · Accepted Answer

Hi, 
 the TMC2240 uses a software based pulse generator to step the motor. It cannot work with more than roughly 130000 Hz. To increase motor velocity, please first stop pulses, set MRES=4 (16 microsteps) and work with microstep interpolation. Now, a setting of 3200 already brings 1 RPS motor velocity.)

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TMC2240 Eval Kit Maximum Velocity Setting