A700 and HSd Spindle setups

[happytriger2000]

Hi all, Need some help on Mitsubishi A700 setups for HSd spindle, Our current Pr setups doesn't work, the spindle motor jigs, which definitely sounds wrong, below is the spec for HSd ES919A. The spindle spec: http://www.hsdusa.com/viewdoc.asp?co_id=435 really need help here!! thx,

[kaare_t]

Well, it's a bit hard to tell when your not informing much... Which parameters have you already changed? Full inverter name? Other relevant information?

[happytriger2000]

Sorry for the delay. Here is the inverter's nameplate: HSd spindle spec: The motor spins but not very smooth, still need more tuning. Parameters: will upload a video soon.

[happytriger2000]

Video: https://vimeo.com/145097349

[kaare_t]

Well it looks by the motor "plate" that the motor can reach up to 20A during normal operation, while the FRA unit delivers up to 17A normal load... The motor "plate" also states 380V/400Hz/12000rpm. Have you taken into account the frequency it is supposed to run on?? The FRA outputs a maximum of 120Hz (and this is supposed to be ~100% over rated frequency - 50/60Hz). I think you're trying to connect a servo-motor to a frequency inverter which I doubt will work.

[happytriger2000]

Hi Propeller Head, Thank you for your reply. So that means the A740 is not outputing enough current for the HSd spindle, got it. On the label for FR-A740 stated 400Hz, but why is it only 120Hz can be set in the Parameter setting? The HSD is a High Spedd Spindle Motor used in CNC Router. Here is a video of another HSD spindle lower 4.6 KW + Mitsubishi FR-740 7.5KW: https://vimeo.com/101532422 pssw: 12345678 (available for 2 days)

[kaare_t]

You could try, without purchasing a bigger inverter, to set parameter 18 to 400Hz (which is the absolutely maximum for this inverter). I investigated a little bit, and it seems it actually should work to connect a high frequency AC motor to the FR-A. Try that first, allthough the motor states a higher current than the inverter can output during normal operation.