Re: [CAD_CAM_EDM_DRO] Yaskawa SGMG questions

John wrote:

>1. Is it possible to run "unmatched" SGMG servomotor with SGDB servo
>drives for positioning control. For example what will happen if I
>connect an SGMG30 servomotor which is 3Kw with a SGDB55 servodrive
>which is rated for 5.5Kw?
>

This is a bit irregular, but I think it should work, if the motor and drive
are from the same series.

>2. Is it possible to test basic functionality of an SGDB drive without
>connecting it to the motor. Available tools a multimeter and scope.
>
>

Most of the Yaskawa servo pack drives have a serial port that can be
connected to a computer serial port. In their documentation, there is
a drawing of the cable pin connections required. Their downloadable
control program can be used to set drive parameters and options, run
test move sequences and plot the servo response.

Not all servo pack drives can take step & direction inputs. On some of the
older ones, you had a choice between models that could do velocity control,
and models that could do position control.

Jon