On 03/16/2015 09:40 PM, Karlsson Wang wrote:
A shield is primarily intended to prevent electrostatic coupling from
the outside world. So by grounding in the consuming end the shield
will get the ground potential of the consumer and the signal cables
will be shielded from different external
Good day,
Thanks for the effort to show your excellent DIY lathe/grinder.
cheers john
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I would recommend that shielded signal cables have the
shield grounded only at the end where the signals are
consumed.
If a ground is needed by the device at the end of the
cable, you should use a conductor inside rather than
the shield itself.
If there are signals going both ways, provide
Are the shielded wires only grounded at one end and at the controller end?
On Sun, Mar 15, 2015 at 1:22 PM, Karlsson Wang
nicklas.karls...@karlssonwang.se wrote:
I think grounding is the most important. There are normally a common mode
voltage at the inverter output to motor so the inverter
On Mon, 16 Mar 2015, Marius Liebenberg wrote:
Date: Mon, 16 Mar 2015 07:19:38 +
From: Marius Liebenberg mar...@mastercut.co.za
To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net
Subject: [Emc-users] Mesa 7i8- hal load string
Hi
I am looking for an example of the
Steve,
this is a good description of noise reduction by shielding. To make it
more exact, the shield should be grounded at the end where the lower
impedance is, mostly the signal source. And not using the shield as a
conductor is useful because any current flow in the shield would cause
I got that one right but was wondering about the config string of hm2
-- Original Message --
From: andy pugh bodge...@gmail.com
To: Marius Liebenberg mar...@mastercut.co.za; Enhanced Machine
Controller (EMC) emc-users@lists.sourceforge.net
Sent: 2015-03-16 18:39:10
Subject: Re:
On Mon, 16 Mar 2015, Marius Liebenberg wrote:
Date: Mon, 16 Mar 2015 16:23:18 +
From: Marius Liebenberg mar...@mastercut.co.za
To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net
Subject: Re: [Emc-users] Mesa 7i8- hal load string
Thanks Peter that is a good start. Is
On 16 March 2015 at 16:23, Marius Liebenberg mar...@mastercut.co.za wrote:
Maybe give me an example as well. Sorry man I am
plucking at straws here as I am at my wits end with stuff I know nothing
about :)
Have you read the documentation?
Thanks Peter that is a good start. Is the order of invocation in the
hal file important. Maybe give me an example as well. Sorry man I am
plucking at straws here as I am at my wits end with stuff I know nothing
about :)
-- Original Message --
From: Peter C. Wallace p...@mesanet.com
On 16 March 2015 at 16:23, Marius Liebenberg mar...@mastercut.co.za wrote:
Thanks Peter that is a good start. Is the order of invocation in the
hal file important.
Yes. It is very important to loadrt hostmot before you loadrt hm2_eth
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atp
If you can't fix it, you don't own it.
-- Original Message --
From: andy pugh bodge...@gmail.com
To: Marius Liebenberg mar...@mastercut.co.za; Enhanced Machine
Controller (EMC) emc-users@lists.sourceforge.net
Sent: 2015-03-16 18:42:15
Subject: Re: [Emc-users] Mesa 7i8- hal load string
On 16 March 2015 at 16:23, Marius
The frequency converters I have seen for electric motors generate a square wave
voltage. To generate a sinus the duty cycle is varied to get sinus voltage in
average and usually the current is close to sinus.
Then it come to quality I guess the large difference is in filters and coupling
to
I think you are right and will just try to dig a little bit deeper.
A shield is primarily intended to prevent electrostatic coupling from the
outside world. So by grounding in the consuming end the shield will get the
ground potential of the consumer and the signal cables will be shielded from
Hi
I am looking for an example of the load string in the hal file for the
7i80. I have done as the manual directed but I am not sure if it is
correct.
I still cannot get the 7i80 to communicate with the hm2 driver. The
board mac is read but there it ends.
-
I didn't hear about RT-Net before, I read now and it looks good. If slaves
could be implemented on ordinary micro controllers like STM32F4 there are cheap
development boards available although with 100Mbit but not gigabit ethernet.
Nicklas Karlsson
On Sun, 15 Mar 2015 12:20:24 -0700 (PDT)
Pardon my ignorance...
But is there a significant difference between use of shielded cable between VFD
and motor vrs lines in hard or flex metal conduit which makes a complete ground
at each end?
Thanks
Greg
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Dive
On 03/16/2015 07:33 PM, Greg Bentzinger wrote:
Pardon my ignorance...
But is there a significant difference between use of shielded cable
between VFD and motor vrs lines in hard or flex metal conduit which
makes a complete ground at each end?
Both cable-shield and a conducting cable-pipe
Peter
I tried the sample that you send and the error remains.
Could it be that the 7i80 takes to long to respond. I looked at the code
where the board is probed and it would seem that the read is performed
directly after the send and if nothing is received it will give this
error. I did not
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