Hi @Claus_Lind ,
to be honest doesn’t look like a cheap solution.
You buy VFDs and you install the powerlink inteface card (in all of them) just for commissioning? For what you have described the B&R VFD is not totally integrated on their machine, so when the VFD is in error, for example you have to open the cabinet and read the error number on the VFD display (Do we have a display integrated in your B&R VFD? If not you need to buy that display too…additional cost). Back to your question I think that is possible, in your sequence you unlock the parameters, update them (for the reference speed source parameter you select select I/O) and lock again.
It’s possible you have to enable manually the powerlink communication on the VFD when you do the commissioning and manually disable that at the end, because
if you enable the powerlink communication all the time and your B&R CPU is not connected to the VFD, the VFD is in error state.
I hope this helps
Ciao
Valerio