[kirk_wallace]

I have a Pacific Scientific R46GENA servo motor for which I need a driver. The specifications are on page 26 here:

http://www.pacsci.com/support/docume...00/svomtrs.pdf

Would your driver be appropriate. Is there a chance that I could get a driver with 320 Volt DC bus at 17 Amps? Thank you.

[Xerxes]

I checked the specs, it would definitely work if it has an encoder. At 200VDC it probably would be limited to somewhere between 1000 and 1300 rpm.

I have some plans about higher voltage drive too (350VDC) but it is really far from realization. Output current limits probably would be similar to VSD-A so it would be capable of outputting about 2-3kW continuously.

[hunserv]

Glad to see you considered it Any news about this?

[Xerxes]

No news about higher voltage drive yet. VSD-E is consuming my HW development time currently.

However, I have modified VSD-A for 350V lying around but haven't had time to test it (or a power supply for it).

[hunserv]

Hm, I`d be glad to test those 350V drives for you
In mid-January I will refit my CNC mill with its original servomotors (AMK) and their drive system, but I am afraid that I will not be able to reconfigure the drive... (password protection) so I am thinking about selling the stuff on E-bay and fit the servos with VSD-s. but for that I`d need ~20A and 350V (or less with some compromise, but 10A - 180V is not really good)

[Xerxes]

Well, that is not so simple. The 'proto' may be dangerous since its never been designed for those voltages. It also requires some firmware tweaking to accept new voltage range.