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Hi,

After a good check over and reassembly, everything is working properly. I have 3 axes again, which is always nice. Although the y-axis stepper motor was stilll working and didn't have a...

Anyone? I feel like I'm talking to myself here...

Hello again,

I received my new drive this morning - very fast considering it had to go halfway around the world.

I have another question to add to the list before I attempt ot use it. The...

Hi,

Just to fill in the gaps for anyone other than Marcus who is reading this, my G201 is truly dead. Phases D+ and D- are destroyed, so it is not fixable. Apparently, this is normally caused by...

Hi Marcus,

I've sent you a couple of emails in the last few days, but haven't had a response. I'll assume they didn't get through for some reason.

I'm trying to determine if you've received...

Hi Marcus,

I'm pleased my component choices have got your approval. I've tried to take some photos of the enclosure. Unfortunately, it's all a bit messy at the moment, because I've already...

Hi Marcus,

The answers to your questions:

The filter capacitor is 100V 15000uF. The power supply is supplying 3 motors. Each drive also has a 100V 470uF capacitor at the power terminals.
...

Hi,

While using my machine today, the y-axis suddenly stopped working. On further investigation, I found that the 5A fuse to the y-axis G201 driver had blown. I replaced the fuse, but it blew...

Hi,

Thanks Al. I didn't think of a seperate servo motor. I guess this approach is functional, but doesn't seem like the most elegant solution to the problem.

It sounds like AC induction...

Hi,

Is anyone able to tell me what kind of spindle motor would generally be found in a CNC lathe with a C-axis (e.g. for live tooling)? Obviously, it will be a servo, but would it be DC (brushed...

Hi,

Thanks for the replies.

The shaft is ground, and the bearing is not a sliding fit on it. I haven't measured it, but I'd say it feels just about right. Again, the housing fits haven't been...

Hi,

Can anyone with previous rolling bearing experience please advise what a 'normal' running temperature should be for a ball bearing (60 x 95 x 18mm) with rubber seals, grease lubrication and...

Hi,

Steve, that table looks like a worthy addition to the machine. How much extra travel does it give?

For the time-being I'm going to stick to the standard table. I don't see myself...

John,

Your new method sounds very interesting. It seems as though you are getting excellent results with less effort.

I was at a second hand tool shop yesterday and hanging in the corner, was...

Hi,

John, when you're done scraping, you could always bolt your camelback onto the back of the column to strengthen it up :) .

I'm still considering the casting option, but if I was going to go...

Hi John,

At least they are consistent from one machine to another! :)

I'm not sure if you have any binding issues with your z-axis (tight at the top and bottom, but loose in the middle) like I...

Hi,

I'm not sure whether I'm going to use a counterweight or not. If I can get away without it, then that's the way I'd like to go.

I'm busy looking into options for my z-axis. So far, I have...

Hello,

I have no plans to include any bow to compensate for the head weight. I weighed most of the components this morning, found the approximate center of gravity of the head and then did a few...

Hi,

I'm reasonably confident that the straight edge is quite straight. I blued up my surface plate and checked the straight edge against that. I know the surface plate obvioulsy can't cover the...

Hi there,

The base is now scraped and all that is left is the z-axis. The only problem now is that my z-axis troubles are worse than I originally thought (I didn't exactly think it was good to...

Hi mcpltd,

The problem that I am having (which I'm sure you've realised by now), is that the the supplier says the current rating is for bipolar parallel, but the resistance rating clearly isn't...

Hi John,

That's not a bad idea - I might send an email off and see what he has to say about parts.

On another note, I haven't touched my scraping in nearly a week, but there is a good reason...

Hello,

John, the only positive thing that I can draw out of your last post is that when it comes time to replace my gears, I'll be able to get metal ones off the shelf (I hope) :( . Oh, and just...

Hi,

John, I seem to have lost my instruction manual and inspection sheet, but I did have a chance to read through them both. From what I remember, you are not missing out on much...:)

I fully...

Hello,

I'll wait to see what they have to say to my last email... It is a bit irritating, because I can't do my electronics enclosure until I know what power supply I need, which depends on the...

John,

I also have some of Arc's 180Ncm motors that are running with a unipolar driver. If this latest information is correct from them, then my 180Ncm motors are also running above their rated...

Hi,

I got a reply from Arceurotrade this morning. They said that the current rating is for a bipolar parallel connection. So I should be using 2.5A for my system.

This is all very well, but...

Hello,

It seems this confusion is not limited to me. I'll contact Arc to see if they can give me some more details.

The datasheet that came with the motors is produced by Arc, not the...

Hi,

Thanks for the replies.

I'd also be interested to know how you go about figuring out what these specs are refering to. I am unclear on what the definition of a "phase" is. I thought that...

Hi there,

I'm busy sorting out the power supply and current set resistors on my system, but have a query about the current that my motors should be set at. I have got G201 drives.

My motors...