Help for MOTOR 2.2 Kw and control board optimum BF46 milling machine

[hacklordsniper]

2 months of trouble, but started working tonight. So i removed the motor, powered the hall board with a bench power supply and tested the output of them, all of them worked ok. I measued ressitance to ground and between terminals, it was ok. I tried insulation tester and all windings seemed to be ok. I tried applying DC to terminals and all of them slightly moved the motor.

I reinstalled the motor again and same thing happened. While starting the motor ON/OFF switch gave 6 flashes and went silent. As i was speaking some rude words to it i pressed the on button few times in series and motor started. Now it works ok. I tried for research purpose to disconnect motor terminals and it again gave 6 flashes and go out. After pressing on button 3 times in row, the PCB "resets" and it works nicely afterwards.

I guess the PCB goes to somekind of protection mode after the motor has been disconnected, and 3 pushes of the ON button reset it. Even the manufacturer does not know this (or does not want to tell).

Im attaching a picture for this PCB as future reference if someone will google this situation in future. Furthermore i will give discovered procedure for adjusting speed range. Pressing the lower button on small PCB you adjust the maximal speed with speed pot, and pressing the upper button you adjust the minimall allowed speed.