Re: Spindle Speed with the GS2 Drive

[Paul <paul-at-bdiemc.fslife.co.uk>]

Hi Gene

Some good news, and some not quite so good... EMC will control spindle speed 
via a spare DAC on an STG type card. It is open loop only and is currently 
set up for +/- 10V control. To add another parameter to the ini file to give 
a zero point offset would be fairly simple to do. The only danger here is the 
undefined state of the DAC prior to EMC being initialized might send your 
spindle of at full speed unless there is an enable input to the GS2.

Another topic for discussion at EMC-Monday perhaps.

Regards, Paul.


On Wednesday 26 March 2003 1:04 am, Gene Warren wrote:
>     Has anyone ever used the GS2-AC Drive in an EMC machine?  This
> drive is speed-controllable via a Com. port or via direct relay-type
> command.  You give it a speed code and it goes there. You can also
> control the speed with a 0 to 10 volt DC input. 5 volts = 0 speed, 5 to
> 0 volts one direction, 5 to 10 volts the other direction.  It has the
> added advantage of running a 3-phase motor in either direction on
> 1-phase incoming.  This might be good for tapping? It will not run a
> 1-phase motor. About $400.00  They claim speed regulation to 0.1 Hz.

-- 

"To err is human...to really f*** things up requires the root password."
>From a collection of quotes at http://www.indigo.org/quotes.html