Advanced Search

Search Results (Searched for: )

  • kello711
  • kello711's Avatar
Today 00:38
Replied by kello711 on topic XHC WHB04B development?

XHC WHB04B development?

Category: General LinuxCNC Questions

I have this pendant and would like to test out your firmware. Where do I find it/install it from? I'm tired of this device working and then just deciding to quit working in the middle of operations.
  • PCW
  • PCW's Avatar
Today 00:26
Replied by PCW on topic Bitfile for rcservo - MESA 7i95t

Bitfile for rcservo - MESA 7i95t

Category: Driver Boards

Firmware for a 7I95T with 2 RC PWMgens replacing the last (05) step/dir pins:

 

File Attachment:

File Name: 7i95t_2rcpd.zip
File Size:283 KB

 
  • tommylight
  • tommylight's Avatar
Today 23:54
Replied by tommylight on topic MotionMaster Upgrade

MotionMaster Upgrade

Category: General LinuxCNC Questions

I've confirmed that I can get a voltage if i turn the servos by hand. The resistance is above the plate, but still under 2ohms. 4 brushes in good condition.

He stated so a few posts back, i did not see it in the pictures from a quick glance, and glasses are not helping much.
4 brushes might be 2 for motor and 2 for tacho, or might be all 4 for motor if they are the same shape and size, as i have plenty of motors with 4 brushes at 90 degree each.
  • motionmasterupgrade
  • motionmasterupgrade
Today 23:44
Replied by motionmasterupgrade on topic MotionMaster Upgrade

MotionMaster Upgrade

Category: General LinuxCNC Questions

I'm going to make a list of components grouped by:
Power (From source to when it get's used)
Inputs (Not much here, keyboard and the handheld)
Motion (From the controller to drives to servos, incl encoders)
Feedback(All other sensors)
Spindle(VFD and everything downstream of it)
Other shit (ATC, grease, beer bottle opener etc)

Lot's of great feedback here. I'll try to understand everything said before committing to a plan. I've been labelling wires. Also decided to simply move to fuse out from the main junction box into its own separate box and just add another half-in conduit just for carrying power to the main box. This frees up all the room I need in the main junction box to work. I think I will be adding an additional 1in conduit to carry the extra conductors needed for the swivel head and rotaries.
  • spumco
  • spumco
Today 23:15
Replied by spumco on topic MotionMaster Upgrade

MotionMaster Upgrade

Category: General LinuxCNC Questions

@tommylight & NWE.... you two have better eyes than I do.

I think you two are right, and the bottom center thing is the rectifier and four drives.  Bundle of red & black wires prolly go out the the motors.
  • SwitchWitch
  • SwitchWitch
Today 22:16 - Today 22:19
Replied by SwitchWitch on topic Ethercat Setup help needed for beginner

Ethercat Setup help needed for beginner

Category: EtherCAT

Normally it should be much cheaper to use Beckhoff Interfaces as long as you buy them cheap from ebay or kleinanzeigen (here in germany). This is one of the main benefits of an ethercat setup.
  • NWE
  • NWE's Avatar
Today 21:24
Replied by NWE on topic QTPLASMAC integrated cad/cam

QTPLASMAC integrated cad/cam

Category: Plasmac

Here is updated nesting using sparrow algorithm. Im also including the github repo for anyone who wants to use the software or work on the software. 

-- snip --

Here is the github link github.com/xxhalflifexx-source/plasmacam
-- snip --

unfortunately, I can't find this one on github
  • NWE
  • NWE's Avatar
Today 21:09
Replied by NWE on topic MotionMaster Upgrade

MotionMaster Upgrade

Category: General LinuxCNC Questions

Brushes, that makes the motors Brushed DC, and from what i recall the drives for those are hard to find, so it does pay off to check if the existing ones are ok.

Ah, I think you're right. The big box with the Fagor computer in the top half, I can see what appears to be an analog brushed-dc multi-axis servo amplifier + psu in the bottom half of the box. With two fans attached.
  • tommylight
  • tommylight's Avatar
Today 20:50
Replied by tommylight on topic MotionMaster Upgrade

MotionMaster Upgrade

Category: General LinuxCNC Questions

Brushes, that makes the motors Brushed DC, and from what i recall the drives for those are hard to find, so it does pay off to check if the existing ones are ok.
  • spumco
  • spumco
Today 20:35 - Today 00:34
Replied by spumco on topic MotionMaster Upgrade

MotionMaster Upgrade

Category: General LinuxCNC Questions

You should be able to get the electrical information off the drives without removing them.  Might need a mirror to see the side of the drive.

Make & model number of the drive would be helpful.  Photo of any data/stickers would be helpful.  Photo of data-plate on motors would be helpful.

From the existing photos, the drive(s) appear to be a module-type arrangement.  There is a single AC to DC power stage part, and separate (smaller) control parts for each servo motor (axis motor).  Replacement drives, if you go that route, will most likely be individual drives that each have built-in ac rectification.

That's why your 'drives' look like one big box, and replacement drives you might have seen on the internet or forum posts look like separate boxes.

The reason I mentioned not using the existing drives is that those drives most likely require 3-phase power supplied to them.  You/we will know more once you get a drive model number off them and (hopefully) find a user manual.

Some 3-phase equipment will work when supplied single-phase power, albeit at reduced output.  However, not everything has that capability.

If you have 60 amps of single-phase 230VAC available, that translates to ~36A of 230VAC 3-phase using a Phase Perfect "10hp" phase converter.  Rotary phase converters may be a bit different, but that should give you a ball-park power budget.

If your existing servo drives require - guessing here - 30 amps, that only leaves ~6A for a spindle motor.  So you can see why it's important to know what they require before you can decide to keep them or not.


For wiring/electrical software, I like TinyCAD.  But I'm not a pro, and other people have other software they prefer.  Do a search on the forum - I think there was a discussion last year about schematic-building software.

EDIT
I was wrong, disregard my ramblings about the drives.

Still need to figure out power budget, but based on the size of that rectifier capacitor I don't think those are really high-amp drives.
  • grandixximo
  • grandixximo's Avatar
Today 07:05
Replied by grandixximo on topic LinuxCNC S-Curve Accelerations

LinuxCNC S-Curve Accelerations

Category: General LinuxCNC Questions

Short answer: no.
Longer answer:
Kinda, TP1 and TP2 are different ideas/models/architectures, TP2 is what can be moved in a separate thread, because it was made to plan out of RT, TP1 idea was to run in RT, both are valid ways to solve the jerk-limit, so me and YY agree both can live, they are different approaches, with their own pros and cons, moving TP1 to a separate thread would basically mean TP2.
 
  • Hakan
  • Hakan
Today 06:20
Replied by Hakan on topic Ethercat random jitter fix

Ethercat random jitter fix

Category: EtherCAT

Synchronization of slave clocks can sometimes take a long time at start.
There is a warning in syslog if it takes more than 5 seconds, or is it 30?
Don't know how to fix it, more than hope the slaves' clocks run more equal
when not being nudged by the master.
Add pll-err to the halscope plot. 
  • endian
  • endian's Avatar
Today 06:11
Replied by endian on topic LinuxCNC S-Curve Accelerations

LinuxCNC S-Curve Accelerations

Category: General LinuxCNC Questions

I don't think I should hard code limits, it should be up to the integrator to setup the machine with proper cycle time and limits according to processing requirements 

@endian @rodw
TP2 in a separate thread should be the medicine that fix our ailments, filtering, NURBS, all will be taken into consideration, it is an active development and testing on our end, not ready to share yet.
 

Do you think that TP1 + TP2 should be in the separate thread ?

thanks
  • frankomatic
  • frankomatic
Today 05:23
Replied by frankomatic on topic What's the opposite of skipping steps?

What's the opposite of skipping steps?

Category: Driver Boards

Thank you very much.
  • grijalvap
  • grijalvap's Avatar
Today 04:33
Replied by grijalvap on topic QTPLASMAC integrated cad/cam

QTPLASMAC integrated cad/cam

Category: Plasmac

Any Update?
Displaying 1 - 15 out of 17534 results.
Time to create page: 0.241 seconds
Powered by Kunena Forum