Hi John,
Thanks for sharing the drawing. Yes, I would like to get things properly
drawn when I get the time.
In the mean time....... would you mind having a quick look at the
revised schematic on the following link to check I have placed the
capacitors you suggested in the correct place when using the HCPL2631 ??
https://www.purbrookengineering.com/index.php?option=com_content&view=article&id=11
I notice on your drawing you have 'Earth' and FGND. What's the difference?
Pete
On 09/10/2021 18:18, John Dammeyer wrote:
Hi Peter,
I find it helps to draw a wiring diagram of where things are wired. That’s
different from a schematic which just shows how things are connected.
For example, I've attached the old schematic of my mill wiring (before I
removed the two HP-UHU drives and wired in the quadrature encoder for the
spindle into the second Chinese BoB). Note to self: Really must update now
that I have AC servos on everything.
I have colour codes on there for wiring. But it does not show the actual wiring
paths. For example the 24V comes out of the Power Supply and splits in two
directions. One to the DIN Rail for the MiniBoB->STMBL drive, the STMBL drive
and 24V-16V UHU power supply. From there another DIN rail set of terminal blocks
to run power out to the Bergerda Spindle Interface and now the Bergerda interface
boards.
But the drawing doesn't actually show the DIN rails or wire lengths so there's
no way to see if the 24V system has ground loops etc. Not from the Schematic.
So I still have to create a new 'mechanical' wiring diagram that shows where
rather than how things are connected.
John
-----Original Message-----
From: Peter Hodgson [mailto:peterjohnhodg...@gmail.com]
Sent: October-09-21 1:38 AM
To: Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] Fwd: Rogue Index Pulses
Thanks Chris, yes, I will change the shielding ground to the controller end and
isolate the case.
Is it best practice to run the 5v and 12v �grounds� back to the original 24v
power supply 0v?
On 9 Oct 2021, at 00:53, Chris Albertson <albertson.ch...@gmail.com> wrote:
?I'll say what Gene said. I'd bet on a groubing issue. The schmatic has an
error, a groubd wire ismissing and also shows random crossing grounds.
Run everything back to the power supply minus post.
Also you be much better if the sheild was grounded to the controller end.
Never us a machine and it's mounting bolts as grounds.
--
Chris Albertson
Redondo Beach, California
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