Gene
When you say micromill are you referring to the X2. I have one of these
as well. I am running it with EMC2 though the parallel port with a G540
driver. It accepts a VFD PWM signal and has an op-isolated 0 to 10 volt
analog output for a VFD. It also has 2 uncommitted output pins. It looks
Am 09.10.2009 um 22:34 schrieb Eric H. Johnson:
Michael,
How recently was that updated. I just did rebuilt of smp (2.3.3)
earlier
this week and have just not gotten around to posting them.
the files in http://linuxcnc.org/experimental/hardy/smp/ are all 22-
Apr-2009 if that's what
2009/10/10 Jon Elson el...@pico-systems.com:
witch.
Warning! The spindle speed controller on these machines is NOT isolated
from the
line. So, you need to provide some sort of isolation for and speed
controller interface
to the computer. PWM and optocouplers sounds like a good idea.
Hubert,
The term PWM as discussed here is referring to the
signal from the parallel port to the device used to
set the motor speed. In the case of the X2 and
many other DC motor drivers, the current supply
into the motor is also controlled by PWM, but it
is generated and controlled by the motor
Michael,
How recently was the parport fix added? Is it in 2.3.3?
At any rate, I will send you the access information by private email.
Regards,
Eric
the files in http://linuxcnc.org/experimental/hardy/smp/ are all 22-
Apr-2009 if that's what you're referring to, emc is 2.3.0 in there
could
On Saturday 10 October 2009, Jon Elson wrote:
Hubert Bahr wrote:
I am talking about a spindle on the X3 Seig Mill. I am planning to
convert the current gear drive to a two range belt drive, and since the
current controller appears to use a pot to adjust the speed and a switch
to change
On Saturday 10 October 2009, Hubert Bahr wrote:
Gene
When you say micromill are you referring to the X2.
I think the X2 is this ones bigger brother, selling for about $500, this was
the $300 HF version. But I bought the expansion table kits from Chris at
LittleMachineShop.com, and made a new z
A twisted pair, or any long piece of wire coming out of the back of a PC, is
first and foremost, a transmission line, and needs to be terminated
properly. This has nothing to do with the DC bias. The impedance of such a
line is generally 50R to 75R.
In the case of a printer port line, which is
Gene
So you have the X-1, I have an X-2 and X-3 also from Habour
Freight. I am guessing the principles are the same but I will need to
check the implementation. Specifically, I am interested in what you
connected to pins 1, 2 and 3 of PMDX-106's J2, the spindle signal
connector.
Roland Jollivet wrote:
A twisted pair, or any long piece of wire coming out of the back of a PC, is
first and foremost, a transmission line, and needs to be terminated
properly. This has nothing to do with the DC bias. The impedance of such a
line is generally 50R to 75R.
Actually, twised
2009/10/10 Jon Elson el...@pico-systems.com
Roland Jollivet wrote:
A twisted pair, or any long piece of wire coming out of the back of a PC,
is
first and foremost, a transmission line, and needs to be terminated
properly. This has nothing to do with the DC bias. The impedance of such
a
Oops, yes. Thats what you said. Differential impedance = 100R
Roland
2009/10/10 Roland Jollivet roland.jolli...@gmail.com
2009/10/10 Jon Elson el...@pico-systems.com
Roland Jollivet wrote:
A twisted pair, or any long piece of wire coming out of the back of a
PC, is
first and
Hi Hubert,
You need to be careful connecting to the pot inputs of a lot of these type of
speed controllers. The usually put a DC voltage of anywhere between 7V to 15V
across the potentiometer. The kicker is that this voltage is generated via a
zener shunt regulator and the control voltage is
Peter
The SX3 or Super X3 sold by Grizzley (G0619) does use the digital
control. The X3 sold by Harbor Freight and also Grizzley (G0463) use a
speed potentiometer. My first attempt will be to use the VFD outputs of
the Gecko G540 which provides an opto isolated pwm to analog reference.
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