RE: [CAD_CAM_EDM_DRO] Pwm control & Spindle input

Jack,

Question #1 go to http://groups.yahoo.com/group/mach1mach2cnc and join the
group if you are not a member already. Click on files and then click on
Speed Control. The second file is a picture of and op amp circuit to do what
you want.

Question #2 you can use the sensor to sense the pulse but you will have to
convert the output from 18 volts to TTL (0-5VDC) levels. One thing about
inductive switches; make sure you guard it well if you get a metal chip in
between it and the sensed part it will come on all the time and have no off
state. Also check the response time of the device, some are not to quick.
HTH


Best,

Ed Gilbert

Gilbert Engineered Systems
632 Warrenton-Embro Road
Macon, NC 27551
252-257-0539

> -----Original Message-----
> From: Jack Hoffa [mailto:jack.darlene.hoffa@...]
> Sent: Sunday, January 25, 2004 12:15 AM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: [CAD_CAM_EDM_DRO] Pwm control & Spindle input
>
> Help-For Elect. Dummy Running Mach2 (I tried that group but no Help)
> 1. From PWM control in Manual (4.7.3)how do I convert the PWM signal
> to 0 to 10 volts?
> 2. I have a 15 to 34 volt inductive proximity switch (NPN) and a 18
> volt power supply. Can I use this for the input to the index input
> pin? 6.1.5 of Manual
> I have a Hitachi SJ100 (3HP) Inverter. My Mill has a 2HP 3P motor
> that is currently running from a rotary phase converter.
>
> Thanks in advance for the Help
> Jack Hoffa
> jack.darlene.hoffa@...
>
>
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