24 Jun
2007
24 Jun
'07
12:40 p.m.
On Sunday 24 June 2007 14:28, Dave McGuire wrote:
On Jun 23, 2007, at 6:57 PM, William Donzelli wrote:
That's an interesting idea. How physically massive is such a
system likely to be?
It depends on the controller.
Ones I've seen have ranged from about 30"L x 30"W x 60"H, to 8'L x
3'W x
8'H.
The "power supply" and "I/O device" are usually a bit bigger. :)
(For those that don't know, elevators usually use a DC motor, and at
least for ones that are old enough to use relay-driven controllers, use
a AC/DC motor-generator set or rotary converter to produce the power.)
Pat
--
Purdue University ITAP/RCAC --- http://www.rcac.purdue.edu/
The Computer Refuge --- http://computer-refuge.org
Well
this is clearly a problem. I consider myself to be a
person having pretty general experience with technology, and I've
never even heard of this stuff...but it sounds very interesting to
me. Perhaps what is needed is a way to "get the word out".
Pictures, descriptions, educational materials...YOU know about
this stuff, but who else does? I'd love to learn about it.
Contact one of the elevator installers and see if they would sell
you an old relay control system, ripped out of a building
undergoing a rebuild.