Gene,
Based on your response I believe you're referring to a PDM commanded
spindle. I'm using PWMGEN pulses to drive my PM DC Motor.
I think I have it now tweaked about as good as I can get it. It took a
combination of modifying the following two HAL entry values:
setp pwmgen.0.scale 7600
setp
On Wednesday 20 May 2020 11:55:57 Dan Henderson wrote:
> Gene,
> Based on your response I believe you're referring to a PDM commanded
> spindle. I'm using PWMGEN pulses to drive my PM DC Motor.
>
> I think I have it now tweaked about as good as I can get it. It took a
> combination of modifying
hey andy thanks for the quick reply.
I am wired up with differential twisted pairs.
I have the 24v dc power supply powering all the general clean power needs
on the machine. eg mesa 7i76 card and servo drives logic power. also
powering the servo on pin on the servo drive connector.
I am still
thanks for the reply PCW
hey is that different to just checking the raw count in Hal?
what pin am I looking for? and can I monitor it from the Hal configuration
window?
regards
Andrew
On Thu, May 21, 2020 at 1:36 PM Peter C. Wallace wrote:
> On Thu, 21 May 2020, andy pugh wrote:
>
> >>
andy and PCW thanks so much for the help.
I will be back in touch when my other cards come I will probably just
update my build thread on the forum so that the next person having issues
can seach the posts for my issue
regards
Andrew
On Thu, May 21, 2020 at 2:05 PM andrew beck
wrote:
> hey
the 24v common is currently not connected to the frame ground. It is
floating. well the meanwell powersupply has a ground terminal on the input
side that is connected to machine ground. but the output side is
completely unconnected eg the 24 v and 0v are floating
I will double check the wiring
actually I just found the A and B inputs in the Hal configuration window
the B input changes from red to yellow if I put some force on the table and
try move it slowly.
but the A input doesn't change color at all.
is that expected with a problem like this?
On Thu, May 21, 2020 at 1:38 PM
On Thu, 21 May 2020 at 01:47, andrew beck wrote:
> Now all it seems to do is change from 0 to 1 on the count and there is not
> any sense to the numbers changing. it is not counting as it was before.
This is what you see if one of the A or B channels has stopped
working. You can probably see
hey andy
just to make this crystal clear
do you want me to check with a multimeter between A+/A- and then afterwards
separately check between B+/B-
that will be slightly hard to do as the encoder is a simulated output or
something from the servo drive..
I might need to get another person to
On Thu, 21 May 2020 at 02:22, andrew beck wrote:
> I read a post you made while ago saying that the 5v and 24v powersupplies
> need to be within a certain threshold to work well. or else they need to
> be commoned together
This is really a question for PCW. I think that they need to be within
On Thu, 21 May 2020, andy pugh wrote:
Date: Thu, 21 May 2020 02:21:02 +0100
From: andy pugh
Reply-To: "Enhanced Machine Controller (EMC)"
To: "Enhanced Machine Controller (EMC)"
Subject: Re: [Emc-users] mesa 7i76 spindle encoder not counting suddenly
On Thu, 21 May 2020 at 02:14, andrew
On Thu, 21 May 2020, andy pugh wrote:
Date: Thu, 21 May 2020 02:33:16 +0100
From: andy pugh
Reply-To: "Enhanced Machine Controller (EMC)"
To: "Enhanced Machine Controller (EMC)"
Subject: Re: [Emc-users] mesa 7i76 spindle encoder not counting suddenly
On Thu, 21 May 2020 at 02:22, andrew
hey peter I will check that now before I put the machine together
again without the encoder config to make parts again
On Thu, May 21, 2020 at 3:05 PM Peter C. Wallace wrote:
> On Thu, 21 May 2020, andrew beck wrote:
>
> > Date: Thu, 21 May 2020 14:05:02 +1200
> > From: andrew beck
> >
I read a post you made while ago saying that the 5v and 24v powersupplies
need to be within a certain threshold to work well. or else they need to
be commoned together
so if I test between the 7i76 mesa 24 field power ground ( this is the same
power as the servo drive control power) and the
On Thu, 21 May 2020 at 02:14, andrew beck wrote:
> I am wired up with differential twisted pairs.
That's a good start.
> also the 5i25 is connected powering the 7i76 spindle encoder power which I
> am using (I don't have a external 5v powersupply.
If you put a multimeter on the A+ / A- and B+
On Thu, 21 May 2020, andrew beck wrote:
Date: Thu, 21 May 2020 13:44:03 +1200
From: andrew beck
Reply-To: "Enhanced Machine Controller (EMC)"
To: "Enhanced Machine Controller (EMC)"
Subject: Re: [Emc-users] mesa 7i76 spindle encoder not counting suddenly
actually I just found the A and
hey peter
I am using a 5i25 and 7i76 combo. and currently supplying power from the
5i25
so I don't particularly want to make the computer ground the same as
everything else lol.
it sounds like I need to connect a external 5v powersupply up to the 7i76
and change the jumpers around to suit.
On Thu, 21 May 2020, andrew beck wrote:
Date: Thu, 21 May 2020 14:05:02 +1200
From: andrew beck
Reply-To: "Enhanced Machine Controller (EMC)"
To: "Enhanced Machine Controller (EMC)"
Subject: Re: [Emc-users] mesa 7i76 spindle encoder not counting suddenly
hey peter
I am using a 5i25 and
I've been surfacing a casting that is larger than my machine envelope. Not
only that although pattern was 5/8" thick MDF the casting ended up with thicker
and thinner parts. With it shimmed and moving clamps around I managed to
flatten the bottom and then clamp it down and surface the top.
john
I sell these in new zealand all the time. they work perfectly. I even run
them in my cnc. there are much better cutters of course but these
definitely work
make sure you buy alloy inserts for them they are polished and razor
sharp. I would think a apkt insert would be much better than a
On Thu, 21 May 2020, andrew beck wrote:
Date: Thu, 21 May 2020 13:38:08 +1200
From: andrew beck
Reply-To: "Enhanced Machine Controller (EMC)"
To: "Enhanced Machine Controller (EMC)"
Subject: Re: [Emc-users] mesa 7i76 spindle encoder not counting suddenly
thanks for the reply PCW
hey
Hi guys
I have a bit of a funny issue here
yesterday morning I started up the mill and the 7i76 encoder counter was
working perfectly. I have been tuning my servo drives (tuning inside the
drives itself using the spindle encoder feedback counter just for testing,
which worked perfectly. my
On Thu, 21 May 2020, andrew beck wrote:
Date: Thu, 21 May 2020 15:53:45 +1200
From: andrew beck
Reply-To: "Enhanced Machine Controller (EMC)"
To: "Enhanced Machine Controller (EMC)"
Subject: Re: [Emc-users] mesa 7i76 spindle encoder not counting suddenly
hey PCW and andy
I just checked
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