Ready Steady Eddy

[EddyCurrent]

Earlier I was having problems getting my spindle running in vector speed mode, this is now sorted thanks to ABB

Spindle ELTE, V=220, A=9.5, Speed=24000 rpm, Kw=2.2
Drive - ABB ACS355 2.2kw 01x-09A8-2

The problem was it would work great in v/f mode but not in vector mode.
Following many emails and parameter changes without success an AB engineer paid me a visit and it was sorted out in a morning. (I don't think you would get this support with a Chinese VFD)

This was the solution;

1) Drive firmware changed from 5060 to latest 5090. Version 5090 is known to contain improvements for ‘special motors’
2) Switching frequency par. 26.06 set from ‘4kHz’ to ‘16kHz’. Par. 26.07 = ON(LOAD).
3) Rescaled group 99 motor data to 200Hz equivalent, (i.e. 200Hz, 11500rpm, 9.5A, 110V,1.1kW)…changing this allowed the motor to achieve 24000rpm for the first time during testing
4) Adjusted ramp rates (par. 22.02 = 5s and in particular 22.03 = 10s), also introduced S-shape (par. 22.04 = 1s)
5) Adjusted non-user parameter 112.08 from ‘40’ to ‘10’ (made motor sound quieter, particularly at low speeds)
6) Speed controller ‘Autotune’ performed (using par. 23.05), resulted in par. 23.01, Gain = 3, par.23.02 Integral = 2s and par. 23.04 Accel Comp = 1.45s