15 Jul
2021
15 Jul
'21
2:50 p.m.
I believe that the CDC built RP04 has a three-phase spindle motor.
On Jul 15, 2021, at 5:13 PM, Paul Koning
<paulkoning at comcast.net> wrote:
On Jul 15, 2021, at 4:33 PM, Michael Thompson
<michael.99.thompson at gmail.com> wrote:
The power cord is three-phase, and actually daisy-chains to a second and third drive. The
phases on the AC output connector are rotated to balance the load on all three phases when
three drives are daisy-chained. If you look at the power wiring diagram on page 3-120 of
the Memorex 677-01 manual you will see only two of the phases going to the power
transformer.
Ok. I just looked up the RP04 maintenance manual. It isn't all that explicit but it
does say that the spindle motor is a 3-phase induction motor.
paul