25 Oct
2000
25 Oct
'00
12:19 a.m.
"Richard W. Schauer"
<rws(a)enteract.com> wrote:
Actually it doesn't use the three phases... just the first two.
The third is routed out to allow daisy chaining two drives together
with power being routed out of the drive with the phases swapped
for load equalization.
I've recently acquired an RP06 as part of a
PDP-11/44 system, and I wish
to run it (why not?) I remember reading on this list a while back, that
it could be operated on single-phase power instead of three-phase.
Not likely. I got a printset along with the drive, and
it's pretty unclear about
what would use the three-phase- it's almost like the third phase is
ignored, the 208v between the first two phases is fed to the
transformer, and the primary is sort-of center tapped to feed the 115
volt fans. Is this right? How would I go about feeding it
single-phase if that isn't right?
Sounds like you're looking for the printset for the electronics.
The drive uses a three-phase motor. Some people have suggested using
a capacitor-start arrangement to run it without three-phase, but I'm
very skeptical that it would work well.