Max modulation control

[STuser2]

Hi,

It is not an issue with ST software but wanted to clarify, my application requires different modes with speed limitation in each mode, to do that i have started controlling the CircleLimitationM1.MaxModule parameter in torque control mode which is the modulation index. Is it ok? since as of now i only used to control the Iq parameter but speed i could not regulate with Iq. I was successful in controlling the RPM but i want confirmation that it is ok to alter the maxmodule parameter as per the requirement, i am changing this in run time. 

[STuser2 · Accepted solution]

I tried controlling this parameter it works for some rpms but suddenly at low rpms it makes huge noise and vibration. The motor rotation sometimes ok, sometimes it is hard and kind of holding the motor. Could u pls confirm if it can be controlled at the run time and any other parameters to be adjusted like PID loop?