Messages

1051

General Mach Discussion / Re: Bridgeport Knee Mill Conversion?

« on: October 05, 2016, 06:06:23 AM »

Amp draw can be measured if you have a snap around ammeter.

RICH

Ah, no but i know where i can borrow one


Thanks, will ask the sparks that maintain the business in my day job.

1052

General Mach Discussion / Re: Bridgeport Knee Mill Conversion?

« on: October 05, 2016, 04:41:12 AM »

Something that rarely gets mentioned but was brought up by my motor change...Power required...

I now have a 3ph 2.2kW spindle motor on a 230v vfd, 700w X AC servo, 700w Y AC servo, 400w Z AC servo, maybe 100w for pc and controller on this machine.

How do i calculate the supply capacity allowing for diversity - it will not be running 100% flat out all the time, far from it

I know i need to uprate the MCB's and supply cables as the build was originally for the small 1.5hp spindle motor and I only fitted a 10A mob for the spindle.

Adding up the maximum ratings for all drives gives a figure way more than i can supply because of no diversity allowance

Any thoughts?

1053

General Mach Discussion / Re: Do i have to manually type in tool # when I do tool change?

« on: October 04, 2016, 01:17:20 PM »

Thats odd, how have you got tool-change setup in config?

Can you post up a chunk of code that shows the beginning of a job with a tool change and maybe 20 lines afterwards.

I use it a fair bit and never have to enter the tool number so it must be a setting or code issue i think

1054

General Mach Discussion / Re: Bridgeport Knee Mill Conversion?

« on: October 03, 2016, 05:03:42 PM »

Yep its an odd one.

As soon as i have the new motor fitted, i intend to repeat air-cut the same code as before and see what happens.

1055

General Mach Discussion / Re: Bridgeport Knee Mill Conversion?

« on: October 03, 2016, 01:52:45 PM »

The limits are wired to the input side of the Telemechanique safety relay, the two output channels are connected to the supply contactors and an input on the CSMIO.

The input to the CSMIO is set up as the e-stop input.

Yes the message is in the message line on screen and says "Limit switch triggered" - it will do this even before moving an axis if it thinks it needs to move somewhere it knows it cannot, at least thats the way it seems.

This is code related in that it never does it when i'm just jogging manually or with the jog-wheel, and only ever seems to do it after the first tool change.

Maybe it is related to the screen-set, this is the 2010 one.

1056

General Mach Discussion / Re: Bridgeport Knee Mill Conversion?

« on: October 03, 2016, 09:35:37 AM »

Ok, will try that but there is no message when jogging into a soft-limit zone?

It can't be a physical limit as they are all wired to the safety circuit first so any false triggering there will throw the safety relay out first killing the power, the only other switches are physical homing ones, they are all industrial stuff, roller levers, with very large travels so a false trigger would not happen there as well as the fact that they are all mounted well away from the actual physical travel limits and i use a home-offset.

It was random as such that it does not always do it but then repeatable as in it was always after the first tool-change and always when it sent the Z to home.

1057

General Mach Discussion / Re: Bridgeport Knee Mill Conversion?

« on: October 03, 2016, 08:45:35 AM »

No, this is an internal limit of some sort, not a physical switch at all and not mach soft-limits as i dont think you get a message on screen when they trip.

It seems to be a CS_LABS thing - if the g-code tells it to go somewhere it knows it cant I get a message on screen - "Limit switch triggered"

This has only ever happened on the CSMIO machine, never on the plasma or mini-mill.

It's like something is getting confused, especially if not only ever when tool-length offsets are in play.

Seems to be the G28 G91 Z0. line that sometimes triggers it but only after the first tool has been run???
It uses that line at the end of each tool to send the Z right up to machine home.
Maybe i need to get the post edited to use G0 G53 Z0 instead?

Its a bit complicated to note exactly what and when it happens.

1058

General Mach Discussion / Re: Bridgeport Knee Mill Conversion?

« on: October 03, 2016, 06:16:12 AM »

Anyone?

1059

General Mach Discussion / Re: Bridgeport Knee Mill Conversion?

« on: October 02, 2016, 07:24:34 AM »

Another not so great day, infact i nearly gave up. 30 minute job takes over 3 hours.

Simple job - two setups, total of 5 tool changes, motor mount/adaptor plate for my new drive motor, basically a 250mm circle with 110mm hole in the middle, plus some bolt holes, tabs etc. A nice fun part to play with?

First tool/pass goes well, then the Z gets the command to home for tool change - this triggers a (soft) limit switch, right on the tool change. Reset pressed, tool changed, Z ref is now wrong, reset, pass runs ok, tool-change time - (soft) limit triggers again, same routine.

Offsets look odd but maybe correct, i haven't figured out the numbers yet - pictures below.

The screen tells me max-z is something like 220mm? A bit tricky as i only have something like 130mm to play with? Surely my Z-Max has to be Zero?

Then i start a run and as soon as it hits the first X/Y G1 line it throws an ePid fault, and again, reset, swear, go indoors and re-cam the part for a single tool in the file and it runs OK ?

Its just winding me up something terrible as I am not 'fiddling' with stuff or editing macros etc, I just went out, booted up and tried to do some work.

I have no idea what to fix or what to post up here so other can chime in but boy is it pissing me off.

1060

General Mach Discussion / Re: speed setting with setup string

« on: October 02, 2016, 07:09:56 AM »

Nice, learn something every day