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Murphy wrote:

When I hook a multimeter up to the vfd 10v in, the voltage physically drops near to Zero if a lot of speed adjustments are done. So I can see now what is happening but iv no idea why the voltage drops so much. It must be something to do with how remora outputs the signal ? 

Thats what we needed to see, but this is somewhat expected by the reading from the halscope of SP.0 . alright, well this can be 2 fold. either the RT1052 firmware is doing it, or the analog circuit is messing up. It doesnt show up on mine because Im using STM32 firmware, and Im using PWM.

I am try homing and limits.For test i have only Y stepper driver installed.
Homing work.
but i limit stop not work. I need for safety and bad moves.

hal:
ini:
I read:
forum.linuxcnc.org/38-general-linuxcnc-q...tches-is-it-possible
forum.linuxcnc.org/38-general-linuxcnc-q...ng-on-a-single-input
www.forum.linuxcnc.org/49-basic-configur...sibly-wrong?start=60
forum.linuxcnc.org/plasmac/46160-homing-...ctive-before-backoff
linuxcnc.org/docs/devel/html/config/ini-homing.html

what do i need to do to make the limits work?
Why doesn't homing lock the stepper instantly and needs a monstrously slow motion for the initial search?
 


 

sorry spyder, i had a provision set up so you could do everything from ini file. just sawp these 2 lines, uncomment the one

for the outputs, yeah you need to change them to whatever your outputs are

langdons wrote:

Did ya set the governor to performance?

Try to remove unnecessary hardware.

blacklist kernel modules of unneeded devices.

Mask and disable unneeded services.

Ensure you have plenty of RAM; disk I/O should be avoided as much as possible.

Caching and buffering will reduce disk I/O and latency, but requires ample free RAM.

need more of 8Gb ?  i need desolder realtek from my motherboard? 

PCW wrote:

Yes PCW, is the same Realtek with dkms driver for fix latency.
Maybe I'm asking the wrong question: is it really necessary to do the test with YouTube?

When you get an error, what does:

halcmd show param *.tmax

(typed in a terminal)

show?



 

 
next youtube video start i take junction error.

Actually, no. Spindle 'ON' shows 0v between COM and AI1.

Had a bit of a break and thought a minute and I think I figured this out. There is an entry [FILTER] in the .ini file and I added a line below that PROGRAM_EXTENSION = .nc,.ngc,.gcode G-Code and not only did that work, placing it first in the list makes it the default. Very nice. Thanks for that bit of info. Much appreciated.

For the Z-180 after homing:

My startup procedure is: Starting the configuration and homing. After that the Z Axis is at -180. See screenshot attached.

For the different tool change position:

Toolchange from no tool to lathe tool:

X-Axis-Position: 250mm
X-Joint-Position: 623.2051mm

Toolchange No. 2 from lathe tool to endmill:

X-Axis-Position: 330mm
X-Joint-Position: 873.2051mm

The Y-Joint-Position is the same.

Spindle orient:
"Because this value changes instantly it would likely cause a following error in the b-axis drive " that was the missing bit of information.



 

Either pncconf or MesaCT can make working configurations for a 7I96S
(and MesaCT can make working configurations for the 7I95T AFAIK)


What actual issue do you have?

Measure the input voltage at the VFD it's probably at 10v constant ?
​​​​​​ Yes you can also hook up outputs for  FWD and REV.

Murphy wrote:

What does it do when you try adjust the speed? Is it a VFD you are using? What is the speed input to the vfd pwm or 0-10v analog. Have you the VFD wired correctly ?
 

OK, This is a Merckweir MK300 VFD that was installed from the factory. As par for the course with this machine, the unit is an old out of production version. All this that I am trying to do now is to salvage the purchase of this mill after taking a giga hose job and losing over $3k.

To answer your questions in order -
1. Nothing happens when I try to adjust the speed. Whether I issue an M3 S100 or M3 S15000, the speed is the same. VFD panel reports 3500 rpm, or at least I think it's RPM, anyway, no change.

2. Yes, VFD

3 The input is suppose to be 0-10v and if the translator on my phone is correct that is connected to the AI1 (0-10v analog signal input) on VFD

3. As far as I can tell.... There are only 3 wires, COM, AI1 for the 0-10v analog and X1 that connects to spindle out1 (spindle-cw)

I had posted some photos of the 8 spindle machine and the configuration file here, if is at all helpful. You can see there how I handled slaving the extra joints to the Z axis.
forum.linuxcnc.org/show-your-stuff/53675-8-spindle-gang-router

youtube.com/shorts/dB_NDxr2qPU?si=aM3n6nhEzDfFNsEv

Axis is a great GUI and very stable, the problem with Axis is it's super complicated to try and change the behaviour. Once you start to need a custom GUI this is where Flex GUI shines.

gnipsel.com/linuxcnc/flexgui/index.html

JT

Hello Corbett

Thank you very much!

I'll try it here