[aborgman]

VFD: WEG CFW300A06P0S1NB20
120V single phase in, 220V three phase out, 1.5HP

https://www.automationdirect.com/adc...300a06p0s1nb20

Manuals: https://cdn.automationdirect.com/sta...wegdrives.html

Spindle: KL-800
220V, 5A, 400Hz, 8000-24000RPM, 0.8kW water cooled

https://www.automationtechnologiesin...illing-spindle

Current settings:

P100 (Acceleration): 2 seconds
P101 (Deceleration): 2 seconds
P133 (Drive Min speed): 133 Hz
P134 (Drive Max speed): 400 Hz
P156 (Rated Speed Overload Current): 5.5A
P157 (50% Speed Overload Current): 5.5A
P158 (20% Speed Overload Current): 5.5A
P223 (Direction): 1 (forward)
P400 (Motor Rated voltage): 220 V
P401 (Motor rated current): 5A
P402 (Motor rated speed): 24,000 RPM
P403 (Motor rated freq.): 400 Hz


When drive is enabled, motor turns at very slow rate of speed (~550-600 RPM) and immediately throws an A046 (motor overload alarm) and if you let it continue to run it will throw a F072 (motor overload fault) after about 30 seconds.

Video of spindle run: https://drive.google.com/file/d/1MDO...ew?usp=sharing


The most likely issue seems to be incorrect settings in the VFD... but it could be a spindle issue, or ?

Help, thoughts, anything is much appreciated.

[aborgman]

Problem solved...

Setting max voltage and frequency sets the 100% point on the V/f curve - but doesn't adjust any of the other points.

50% voltage at 30Hz, and 100% voltage at 60Hz will definitely cause overload.

Set

P145 (Field Weakening frequency): 400 Hz
P146 (Intermediate frequency): 200 Hz

...and everything appears to be working well.