106924RE: [mach1mach2cnc] Re: Spindle Setup with VFD
- Apr 1, 2009Mate I couldn't help it. Been down there and all the voltage measures
correct and the relay is a snappin. Time to pack and will throw wire at it
when I get back. Never saw it written anywhere that the STEP did the voltage
and DIR did the Relay.
From: email@example.com [mailto:firstname.lastname@example.org]
On Behalf Of gcode fi (hanermo)
Sent: Wednesday, 1 April 2009 9:17 PM
Subject: Re: [mach1mach2cnc] Re: Spindle Setup with VFD
Thats all right.
We all help each other out here- and everyone has something to learn.
Hope it works out for you ... it should.
Noel Anthony wrote:
> Hanermo You ROCK. Have to go away for 4 days but will be straight onto it
> Thankyou thankyou
> Kind Regards
> Noel Anthony
> wild gravity
> www.wildgravity.com.au <http://www.wildgravity.com.au/
> From: email@example.com
> On Behalf Of gcode fi (hanermo)
> Sent: Wednesday, 1 April 2009 7:30 PM
> To: firstname.lastname@example.org <mailto:mach1mach2cnc%40yahoogroups.com>
> Subject: Re: [mach1mach2cnc] Re: Spindle Setup with VFD[Non-text portions of this message have been removed]
> (I dont have a C23- but the setup is the same as for a c6 board. Mine
> are connected to a lathe spindle motor control, but the procedure is the
> same for a mill. I get about +/- 1 rpm variation in steady state speed
> ie non-cutting).
> Ok .. to start with, lets ignore the direction.
> Pin 14, on the C23 bob, is analog out.
> So, in mach
> Ports n pins/Motor outputs
> At the bottom, for spindle, check the right step/ dir pins for your setup
> the step pin is pin 14 (port 1 of the SS I think).
> the dir - use any free pin with relay (set this up later).
> Save and exit mach. Restart mach (just in case).
> So, for the analog out, between connectors 1 and 2, on the C23, you will
> get a voltage that is proportional to the commanded speed of your spindle.
> This is next to the trim pot, that adjusts your voltage.
> Connect a volt meter to pins 1,2 on the c23, meter on dc 12 V range
> (without vfd).
> set the speed to say 1000 - in mdi in mach with S1000 (assumes mm/sec)
> (Voltage should be zero - spindle is still off).
> Put on the spindle, from the screen.
> The voltage between these pins should now be near 10 v.
> Put your spindle speed, in mach, to your max real speed.
> Assume max spindle speed is 3400 (Bp M-head ;) for example.
> Now adjust the trim voltage on the C23, the R37, so that its output is
> your vfd max, 10 V.
> Now connect the pins 1,2 to your vfd.
> Mach can now control the speed of your vfd -> spindle !
> Then put a relay, or use the relay on the C23, to the dir pin on your vfd.
> If using C23 mechanical relay - use pin 16.
> Ports n pins/Motor outputs
> At the bottom, for spindle, check the right step/ dir pins for your setup.
> Step is already set up.
> the dir pin is now pin 16 (port 1 of the SS I think).
> Now, you should be able to change the direction of the spindle, cw/ccw,
> from the screen or with mdi.
> Hope this helps.
> cnc4pc docs;
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