across each pair UV VW WU and individually to neutral if it has a neutral but not to chassis ground. If there is no neutral then its delta wired.

The two factors that control the motor performance will be frequency and voltage. Generally the VFD is set up so that the voltage drops as the frequency drops. At full speed you should have full volts and reducing proportionally, tho some VFD keep the volts constant above a certain speed (usually when using the overdrive, where you can drive the motor faster than rated).


[edit] we were typing at same time... good that you got it going... still worth checking volts at different speeds for future reference. base frequency of 50Hz would apply to normal mains rated motors... i.e. the rated use frequency. Clearly 400 makes sense here with hindsight...