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Messages - Davek0974

1561
Hiya Chaos, we may know each other already, are you on the Traction-Talk forum? I did things the other way round - I built two and a half traction engines (3" Little Samson, 6" Little Samson and a lot of a 6" Burrell GMT) on the manual equipment then started to learn and build CNC :)

I am now converting my Bridgeport mill to cnc with the CSMIO/IP-A and MPG module.

Do your motors have encoders or resolvers on them? We have a machine at work that has 140v SEM motors but has resolvers which i don't think work with any modern controllers.


1562
General Mach Discussion / Re: CSMIO-IP/A and max velocity setting?
« on: July 01, 2016, 05:47:44 AM »
Ok so i would need to alter the drive parameters so that 0-10v = 0-2756rpm instead of 0-3000rpm, then set Mach3 to 2756 as well in tuning?

The difficult part is finding that parameter in a Chinglish manual :(

1563
General Mach Discussion / Re: CSMIO-IP/A and max velocity setting?
« on: July 01, 2016, 05:22:13 AM »
Er, pardon ;)


Can you expand a little please Hood :)

1564
General Mach Discussion / Re: CSMIO-IP/A and max velocity setting?
« on: July 01, 2016, 02:22:38 AM »
Thanks, i would go for whatever it feels happy with but I'm not going to waste time trying to get that little extra a the top end, if it only runs at 7000mm/min then thats my limit.

I still have a mountain of battles to win at present - seems the bearings in the screw end plates are wrong and not the correct pre-loaded pairs they should be, i will need to shim them out to give some pre-load without binding like they are at present. The correct ones it seems are about £100 a pair but these will do if shimmed up for a while.

I had to get the Y axis front bracket machined as the bolt holes did not line up, seems the new dog-bone screw mount is slightly longer than the old BP one so the Y axis screw sits a little lower than it should, found a local guy that did it for a reasonable price. If only i had a mill ;)

Customers keep getting in the way with orders too ;)

1565
General Mach Discussion / Re: Help Again
« on: June 30, 2016, 10:49:32 AM »
Thats usually a setting the software that generated the g-code, on mine it is anyways ;)

1566
General Mach Discussion / Re: CSMIO-IP/A and max velocity setting?
« on: June 30, 2016, 10:48:21 AM »
I had one of the bigger motors set up today, the following error is better at 256.

I also set the drive to show rpm - they seem to give the ePid fault if it goes above 2950rpm for some reason.

It may be one of the parameters is set too tight in the drive, who knows but in reality I don't think it will matter, i'll just keep away from 100% full speed, 7500mm/min is a bit hairy on a bed thats only 48" long i think.

1567
General Mach Discussion / Re: CSMIO-IP/A and max velocity setting?
« on: June 29, 2016, 04:45:08 PM »
Thanks, thats a bit better ;)

Yes i have a feeling these drives are pretty specific to the manufacturer, so will have to play safe and stick with current manual, the seller was pretty helpful though so if there is a specific question, I can always ask, but as far as tuning goes the answer was "just enter the motor code"

1568
General Mach Discussion / Re: CSMIO-IP/A and max velocity setting?
« on: June 29, 2016, 02:24:40 PM »
Thanks Hood,
different drive, may be similar inside but connectors are different.

I need to do a tune with a load on the motor i think, it behaves differently with a finger on the shaft but that gets a bit painful after while ;)

Hopefully not too long before I can do a lash-up on the machine and see what happens.

1569
General Mach Discussion / Re: Bridgeport Knee Mill Conversion?
« on: June 29, 2016, 02:10:14 PM »
Finally got the replacement Y axis screw today,

Got the table on, nice silky smooth motion :)

Should be able to start moving forwards again now.

1570
General Mach Discussion / Re: CSMIO-IP/A and max velocity setting?
« on: June 29, 2016, 02:07:32 PM »
The drive is pretty much as delivered - you just set the motor designation in the parameters and thats it it seems.

Steps per was calculated from 10,000 pulses from encoder, 2:1 ratio and 5.08mm pitch screw.

I will try reading the drive manual again but its heavy going ;)