Messages

1

Parallel Port breakout boards, motherboards, and dedicated accessories / Re: Mach3 & PMDX 134

« on: February 09, 2018, 06:18:18 PM »

Hi Steve
Back again.
I found a ground loop in the system. Fixed that and system
is better. How ever when I leave the system on overnight
(and sometimes during the run) I have a "limit switch triggered.
What is generating the noise???
Do I need to put a metal shield between ? and ?
Do I, could I use ferrite cores to help.
I have isolated the inputs with a relay board.
I don't mind spending some $$$ if I knew what to
spend it on.
Thanks again for any help!!!
Bob

2

Parallel Port breakout boards, motherboards, and dedicated accessories / Re: Mach3 & PMDX 134

« on: March 01, 2017, 05:52:42 PM »

Does PMDX have a board to interface to the ESS to bring out
all the I/O??
Thanks
Bob

3

Parallel Port breakout boards, motherboards, and dedicated accessories / Re: Mach3 & PMDX 134

« on: March 01, 2017, 02:20:47 PM »

No VFD.
Box only contains 68V DC supply, ESS, C25, PMDX 134,
and 5V power supply from Jeff Birt.
The ESS must generate lots of noise as my radio in the
back of the shop squeals when I power up the box.
Thanks for the reply
olf20 / Bob

4

Parallel Port breakout boards, motherboards, and dedicated accessories / Mach3 & PMDX 134

« on: March 01, 2017, 01:52:36 PM »

I posted over on the warp9 board a problem that I
was having.
I had been running my mill with Mach3 062, ESS, PMDX 134,
and c25 bob.
Everything had been running fine so I decided to put everything
in my cabinet.
After putting everything in and wiring it up I was having trouble
with my limit switch inputs. After throwing a few questions to
Andy (at warp9) it appeared I was getting noise thus tripping
the limits.
Two things I found;
The first was I had installed a 5V buss panel to get all my 5V from.
I had hooked all the +5V for the limit switches to this buss thinking
that it would leave more area around the C25.
I had to move all the +5V back to the C25. Then I could at least get
M3 to start to work. I was still having some limit trips.

The second thing I found was that I had installed a switch on the front
panel so I could disable my drives if needed.
These two wires going from the PMDX 134 to the toggle switch was causing
the remaining limit trips.

All wiring going in and out of the box used shielded cable with the ground tied
to a center point in the cabinet.

Does everything have to be shielded???

Seems odd that the enable / disable wires would cause these problems.

Thanks for any advise

olf20 / Bob