7 Jun
2013
7 Jun
'13
6:21 p.m.
On 6/7/2013 4:37 PM, Ian King wrote:
On 6/7/13 3:16 PM, "Dave McGuire"
<mcguire at neurotica.com> wrote:
And when you
do the 0-200 ips forward read on say a 3420 or 5, it goes
into motion in a real hurry. With an 3803, the bottom 1/3 of the
cabinet is a huge transformer, for instance. There are also pretty
serious blowers for vacuum column drives.
On 06/07/2013 04:41 PM, Tony Duell wrote:
It's also that the power is distributed to multiple slave drives from the
controller/primary drive cabinet. So all the power for up to (ISTR) five
nine-track vacuum-column drives is coming through one straw. -- Ian That's serious power -- 10's of kW. What
on earth does it use it all
for?
How can a tape drive take 40A on 3 phases? The motors can't be that big,
surely?
I would guess that it has something to do with needing to start and
stop the spindle motors very quickly.