You say you have set all the needed PD to 300 but have you set the current and voltage PD settings to match the spindle.? They are usually laser etched on side of spindle.!

When you say it's working fine, what exactly do you mean by that ie: It just starts up fine or it starts up and displays rpm, current, etc correctly and ramps up n down in speed ok and gives correct speed.at the spindle. Because if it's the latter then I'm struggling to see exactly what your asking for.?