Hi,
Few days ago there was a kind of explosion on my KMSSTR2R contactor (it might be because of heat) and 2 glass fuse was blowened on my FR-SF which all of them has been replaced.
I start the spindle on with 100 rpm but at the begining I can see it is fighting some how and does not start smooth, then try C Axis to engage and it is going to behave like fighting with controller, after few second the I recieve the alarm: "55 SERVO LAG EXCESS" on screen and "ALO 52 ERROR EXCESS (POSITIO)" on spindle servo controller.
I checked base transistor (IGBT) all of them are ok, checked power supply SF_PW (replace with other one) it is ok, checked SF-CA board (replace with othe one), it is ok.
At 100 rpm I measeure 3 phase which it goes to spindle, they are not ok with comparing to other head (HEAD1).
I even checked 3 capacitors and they are also ok.
after abnormal starting of spindle, I can go higher speed with spindle with no problem and slow it down to zero without any problem.
Has any one same experience like this or any suggestion to help me through.
Thank you