I have a problem with a AKM motor + SFD Feedback and a AKD-P-NBCC drive : randomly, the error F421 appears on the drive (sometimes after some minutes, sometimes as soon as I switch on the drive)...
I have finally set FB1.TRACKINGCAL to 1, and it seems that I don't have the error anymore ...(But sometimes, I hear a strange noise during few millisecond...I suppose that without TRACKINGCAL, I would have F421 error)
Is it possible to have more detailed on this parameter? Is it possible to monitor the trace of the feedback with AKD Scope ( I mean Sin signal and Cos signal)...
It seems that this parameter is linked with FB1.CALTHRESH (Release FW 1.7...) but this parameter does not exist anymore in V1.13 version ?
Thank you very much.
Comments & Answers
Joerg Muslewski said ...
This issue could be related to EMC- or shielding problems. Does it happen when the drive is enabled ? Are you using SFD with one cable solution ?
SFD feedback provides only a digital signal, thus you cannot trace any analog signal.
At the moment it is not possible to record the analog signals of a feedback by AKD scope function.
You can record the parameter <VL.FBUNFILTERED> which gives an information about the quality of the velocity signal.