Gentlemen,
Jon, I don't know the level of demand for a resolver board. Would
this be a ppmc card or a separate module? I would like to have the
option in the ppmc set. If the price isn't too high I would buy five
to start.
There are still quite a few machines in service that have resolvers.
All the early Fadals have resolvers. I am not sure when they went
to pulse encoders. Both of ours have resolvers. Our newest one was
purchased in 1998.
The older Cincinatti 5 axis machines have resolvers.
I am sure as time passes the resolver demand will continue to
dwindle unless there is some overriding advantage to using resolvers
and the use is facilitated. In what application would a resolver be
the preferred choice? Why?
I have heard price is the reason people have switched to pulse
encoders. Unless alzheimer's has prevailed I remember the price of
pulse encoders is around US $150.00/$200.00. and the price of
resolvers for our Fadals is US $150.00/$200.00. Doesn't seem to be
much difference.
Maybe the reason everyone uses digital is there is no good/cheap
way to get the analog signal into the current controls?
This is definitely beyond my expertise but my perception of the
comparison between digital and analog is something like this.
With digital, the signals do not deteriorate until they just don't
work anymore. There is no adjustment necessary (or even possible).
With analog, as the individual components deteriorate the signals
need to be adjusted. Sometimes, this gets to be quite frequent and/or
involved.
Therefore, the initial cost be equal, the maintenance and repair
of digital is cheaper and easier than analog.
What about pressure/temperature transducers? Would a resolver
board also be able to connect to these and allow the use of their
feedback? Maybe with another pin selection?
thanks
Stuart
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