Testing The VFD, Break Resistor and Wiring to AXBBE

[Phil Mayor]

Hi Muzzer,

I thought I'd give the VFD another test as I was in quite a rush yesterday. Instead of having the prongs balancing on the (R+ and R-) terminals I placed them inside and screwed down on them to make sure of a good connection, and sure enough I did get a reading, it was around 7VDC at idle, 16vDC during acceleration and top speed, then went up to 22vDC during Braking - I tried this around 3 times with the same results...I then tried it between (DC+ and R-) with pretty much the same results.

I remember reading (Page 21) that (DC+ and DC-) terminals could be used also (not sure if this is my bad Understanding or the Chinglish) for an external brake (although I'm not convinced) so I decided to test those terminals and they're reading around 330vDC during acceleration and 370vDC on the brake - but I'm not sure I want to connect the Brake Resistor to these....?

I actually thought this VFD would be good as it had so many more parameters than my last small VFD and it was around £300, tbh it might be me, I kinda hope it is, and the penny drops and I realise there's something I've missed, but I feel like I've, checked, double checked and triple checked everythung...