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Those old industrial type of controllers have all kinds of safety precautions and are hard to kill in a normal situation.

What happened? I hope you did not unplug the motor while it was powered?...

When the oscillations are that much, you have a problem with the tuning of the servo drive. I am not familiar with it, but every drive should have some sort of PID tuning.

It is worth checking...

You can't really tune it on one computer, I have tried it already. You need a second PC for the UHU software. Don't use the G command, it starts without acceleration and you don't need this, work...

Try to add debounce in general config or add a capacitor across the button.

I have never had any problems with my setup, because I have my E-stops and limits wired in series at 24V driving...

Can you give me some info about your supply, was it branded or it was a diy project? I am interested in its schematic.

Happy new year .

Hello all,

After almost 2 years of hard usage I am happy to say that the circuit still works just as perfect as in the beginning.

Now I feel like designing a second version of the same thing -...

Hello

Dissipation is not a problem here, I have big, heavy radiators. I never wanted smps for a lab supply, they have their benefits, but I just don't like using them that way, so I'll go with...

Hello, I am in a process of building this double PS for my home lab here and need some advice.

I have two transformers around 400W each, which output 50, 100 or 150V AC. On the high voltage,...

See this, copied from the UHU manual:

Step multiplier (M)
The provided integer value is added supplementary with every step pulse. I.e. if 'V' is set to '2', the motor moves exactly three 4-fold...

I was having a similar problem with my dust collector and used to keep its wire separated from the others until I replaced the unit for some other reason.

I guess this is a brushed type AC motor,...

Have you checked that everything is connected right? If so, the check it again. That's what I do when something doesn't work.

Also try with a different Xtal. If you got it from Uli then you...

I'm afraid I cannot help you if you don't have any info on the drive. It seems that it is some kind of DIY drive, because there is nothing written on it. All modern devices that are sold have some...

OK, no problem, just wanted to be in touch with the thread. I guess the summer everyone is loaded with work, so there is little time for cnc if it's not the main moneymaker. But they should fulfill...

Hello all, what happened with the upgrade module? Any update on the work last month?

What type of servo drives are you using? You could have a problem with the drive correctly reading the encoder as they said above. Check for docs about the drive, for example I am using the UHU servo...

What are you trying to do? 2184 is a half bridge driver with internal dead-time. Search the datasheet for an accurate info.

Actually the old UHU board uses this driver, you may want to see its...

Hi Paul,

You say motion has different sound, to say better. Is this with the PP or you are using a smooth stepper? I thought once that the irregular sound, going through different speeds was...

Hi,

I haven't uploaded any video on the net yet. As for your motors, running them at lower voltage you will not get their full speed. Smaller differences are not important but here you've got ~4...

Here is what I have posted some 4 years ago.

http://www.cnczone.com/forums/showthread.php?t=14217&highlight=fanuc&page=50 post #591

These are my motors for Y and Z, the X motor is the same...

Hi,

TIP120/121/122 have built-in protection diodes, look at the datasheet PDF and you will see them. That's why there is a schematic without diodes. I always tend to use external ones, that are...

Hi all,

Henrik, I ran trough the userguide but did not find the thing I looked for. Have you made a parameter, similar to the error count on the original chip, and how can you make sure it is on...

I was thinking about the multiplier and how it can produce smooth motion but you already explained it above. I referred to the SS as e device with less jitter than the PP. I've watched some videos...

Sorry about the delay.

With my hardware I can achieve only 1/3th of the frequency you have done, so If you want to test it to the limits, someone else has to come up with a motor with higher rpm...

Hi,

So you are driving it at ~1Mhz, I assume this is with the smoothstepper. I did some calculations here. My motors are 2000rpm max, I have 1024, 2000 and 2500ppr encoders. Even with the 2500 ppr...

Hi Henrik,

Good to know you have some interest in upgrading the UHU drive. That is great as it has a lot of potential, I've been using the old board well over half an year and had no problems...

I understand, so I put away this board and modified one with the 494. Changed a lot of components, its working good, I will load it heavily these days. I am making a electronic load for that purpose....

I know, half the search results brought me to this driver. What I am searching is rather different - it is 16pin DIP which should be push-pull pwm controller with some feedback op-amps and...

Hi all, I have some old ATX PSs here that I would like to modify and use for other purposes but the problem is they don't come with the well known 494 chip but rather with something called "2003". I...

I guess that you are talking about a stepper motor but is it bipolar or unipolar? From the picture I think you have not synced your scope well. I get similar things all the time and it happens more...

Hi, what power supplies are you using? It seemed that they are very low powered as you "blow" them that easily. Have you calculated the current that is needed for your particular schematic?

You...