Niagara AX Help needed with ABB Drives

[GTSDave]

Hopefully one of you can help us out here.

I have a job site with 30 of our ABB drives with ACH550 E-Bypasses, and a second site with 2 of our ABB ACH550 drives with E-Clipse Bypasses.

The contractors equipment is an FX60 (Jace6, at Niagara ver 3.3.22)

On both sites the Contractor is using Niagara AX and polling the drives with the default, ReadPropertyMultiple. The problem is our drives only accept ReadProperty. They are sending multiple messages with RPM before it switches to ReadProperty, but it is taking a long time to switch, bringing the busy times to very high levels slowing the bus down to a crawl or even knocking them off line.

How do they change the system to only poll with ReadProperty to the drives? They can't find it in their software. I know the drive side, but am no help with their Niagara system, as I have never worked with it before.

If anyone knows how to make the switch please let me know ASAP. The GC is leaning on my customer very hard. These are one of my best customers and we have been doing serial com with hundreds of drives using N2 for nearly 8 years with them. They just made the switch to BACnet and the growing pains are really starting to hurt!

Thanks,

-Dave

[freddy-b]

I know you probably know this info already.
Just in case. Bacnet Is so great isnt it.

http://library.abb.com/global/scot/scot239.nsf/veritydisplay/0ba2ce40a7a09e9c852574ec00516971/$File/ACH550-PHWP01U-EN_REVA.pdf

[GTSDave]

Thanks Freddy-B,

I have known M. O. at ABB for many years now and that was the first group of things we checked. I believe he wrote that document. Unfortunately he is on the road this week and we are exchanging e-mails as he gets service. I was just hoping someone had seen this already and could save us some time.

Thanks again,

-Dave