On 04/04/2017 01:35 PM, robert - Innovative-RC wrote: > Hi > > i am planning to retrofit a machine i will change the servo motors as > current ones are faulty etc.... > anyways i know the motor ratings on the machine right now as follows > > Yaskawa USAFED-30FS20E > Rated 18.6Nm > Continuou Max 22.5Nm > Peak max 54.1Nm > Rated Speed 1500rpm > Max Speed 2000rpm > Torque Constant 0.98Nm/A > Moment of Inertia jm(=GD2/4) 110.0kg.m2x10-4 > Power 2.9Kw > > now the servo i was looking at replacing with has the same torques but a > lower Inertia Jm value. Somewhat lower inertia should be no problem. > what effects does this have on the > accell/deaccel , i know motor it self takes less toque to accel its > self.. but how does this related back to the load wanting to carry on > moving when trying to deaccel it, what are the the realworld or other > impacts on the motor/drive , am i more likly to see higher bus > voltage/regen problems from the motor loading, as this motor is on a Z > axis and has no counter balance so the motor is braked for parking... > motor runs at 1500rpm, screw is 10mm pitch i am not looking to go any > faster just keep things the same ratings etc I would not worry about it except in VERY dynamic systems like routers moving over several meters/second. Probably any motor with this peak torque or more will be fine, and no need for more, 54Nm is plenty.
Jon ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
