Mitsubishi servo hacking - driving an IM spidle
23 Dec 2021 00:20 #229782
by dm17ry
Replied by dm17ry on topic Mitsubishi servo hacking - driving an IM spidle
indeed! kinda thrilled doing that oem-unapproved stuff 
was surprised the TLE5012B is making it to that speed. the datasheet says "10krpm max, mechanical" whatever it means. probably they just haven't tested it above that.
officially supported spindle motor encoders for the MDS-D-SPJ3 with IM motors are 21bit minimum, so i was also concerned if 15bit will be enough. probably not good for using as a lathe C-axis, but i guess it should do as a mill spindle with orientation and/or rigid tapping for small threads.
the fastest original spindle motor is the 20krpm SJ-VL11-05FZT-S01, so i was pretty sure the amp should go to at least 24k... and 32krpm limit is really just parameters being checked as signed 16-bit values...
was surprised the TLE5012B is making it to that speed. the datasheet says "10krpm max, mechanical" whatever it means. probably they just haven't tested it above that.
officially supported spindle motor encoders for the MDS-D-SPJ3 with IM motors are 21bit minimum, so i was also concerned if 15bit will be enough. probably not good for using as a lathe C-axis, but i guess it should do as a mill spindle with orientation and/or rigid tapping for small threads.
the fastest original spindle motor is the 20krpm SJ-VL11-05FZT-S01, so i was pretty sure the amp should go to at least 24k... and 32krpm limit is really just parameters being checked as signed 16-bit values...
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