I completely agree (though I’m am miffed that the moderator sees this a a “resolved” issue) in that, on the surface anyway, this appears to be an issue that could warrant a significant safety hazzard.
I’m not kicking anyone either but with the voltage parameters indicated by Redline, those of us in the US are operating at the ragged upper limit. I checked my voltage with a calibrated digital VOM and found it be in the range of 243.4VAC consistently. Arguably that was around 6pm here so it could have drifted up due to power company shedding.
I have faith the manufactures will resolve this issue and will be watching/waiting for notice to that effect. In the mean time, I don’t think it is unreasonable to hear from any others who have experienced the issue.
Yes, exactly. That is the “E” in E-Stop . Your emergency stop should not rely on uC or any software - it should be a hard mechanical switch to mains or some redundant, fail-safe circuit that cuts mains. When you are in a hole, take the shovel out of your hand .
Though I am super curious why the mains voltage being more than 10% out of spec would affect the uC in the VFD. The uC voltage has to be regulated down to 5v or 3.3v. The only way to get there from 220 VAC is a transformer combined with a regulator (linear or switching). There is no reason the uC should misbehave when the mains is more than 10% out of spec given the amount of regulation required to bring it into safe uC range. The problem is much more likely transients on the uC power rail than a supply problem, especially given the amount of EMI the VFD creates internally.
Maybe post your schematics so we can help debug with you? (jk)
I have experienced this situation twice recently. At the time I just shut down the VFD and moved on with my project. After seeing this come up here today I reported the same to Redline so I can stay in the loop when they come up with a solution. I’m confident that they will as all my previous interactions with their support staff have been addressed in a timely manner.
It’s not a paperweight. You can still use it, you would just have to treat it more like a manual router for the time being. Yes annoying, but you’re expensive machine is still usable.
I am just curious, has anyone here bought a vehicle that did not have a recall or safety notice come out from the manufacturer? It is a piece of equipment therefore at some point there may be issues that the manufacturer will need to resolve. To me making comments like I have a multi thousand dollar piece equipment sitting in my shop that’s no better than a paperweight is rude and not giving the manufacture time enough to resolve the issue. It is totally up to you as the owner to park your vehicle “CNC” and wait for a resolve or do as a lot of people are doing and utilize it knowing that there is a fix in the works and you have to be a little extra cautious. I have $100,000 truck sitting in my yard that had a recall, which was resolved by the manufacturer, but in the meantime, I was still able to use it. It was my choice.
Do you have a way to check this (perhaps a serial # range) so you can pre-emptively ship replacements? I’ve had this happen but chalked it up to EMI as previous reports of the HMI locking up all seemed to be written off as EMI. I simply resigned myself to checking the DRO every time. Will you be making a fix available to make this compliant with North American power standards (240V +/- 10% is 216-264V)? We don’t get 220V delivered from the power company.
with a 20,000-rpm spinning away. I don’t think so. one forgetful moment and you’re Frodo the nine fingered. shutting down and rebooting every time it happens? nope. that is not what I paid for either. it needs to be fixed properly before someone gets really hurt. Like someone else said people that wear ear protection due to the loud noise of the vacuum cannot immediately tell the spindle might still be humming away and the dust boot does not let you see the bit in many cases. So, it is easy to imagine someone grabbing the brush and pulling it off only to have a finger in contact with a spinning bit. not a good thing at all. So no, I will not be using the machine till this is corrected. I still have all ten digits, and I plan on keeping them, intact. I have been a wood worker and machinist all my adult life. So having all ten says something.
Fair point about the e stop not functioning correctly, I agree that is a concern. As for the rest, you should always be confirming the spindle is off before reaching near it. Even if you have it programmed to stop on its own.
I am based in the UK and still on the original BB controller with a Hung Yang spindle and VFD I have resisted wiring the VFD into the controller as I like to maintain some degree of control
My machine and all its add on’s Vac pump spindle coolant pump lights for enclosure are all fed from 2 circuits each circuit has its own isolator with a large lockable emg stop button located by the machine that isolates the 2 circuits, very similar to a college workshop.
Any item that has some form of chip within it has a filter on the socket, we live fairly close to a large industrial area and our power feed is a bit dirty and has a few spikes so I took the decision to try to prevent any issues
Not sure if a multi gang extension lead such as a lot of people use for office computers etc would smooth out your issues
This also has to be fixed to use the ATC. With this issue if you have more than ~244v, you can not slow the spindle down to change bits. I talked to a lineman yesterday and he said that the standard he was trained on was 240v +/- 5%. He has been working with a large company that recently installed a bunch of equipment from Germany, there standard is 220v and none of the equipment is working right, they are having to change their line service to a multi-thousand dollar multitap grid transformer. I am glad onefinity is committed to fixing this and we do not have to all buy transformers.
If the EMI issue is generally isolated to machines supplied at 240vac then it would seem transients might be driving all of it. Not knowing the actual innards of this thing clearly puts it in the speculative corral on our part though.
Truthfully, I’m confident they will find a solution to the general lockup issue. I’m old school, in that I cut my teeth in machine controls design where mechanical e-stop safe guards are a must. Whether or not that is applicable today or not, I’m considering building a “zone” type master e-stop that will mount on/near the machine capable of killing all power to it. Maybe that is an over reaction but it is my shop. Again, not kicking anyone (Redline or other members) with their own approach to the issue of safety.
Maybe I’m “old school” - I turn the VFD power off and wait for the DRO to go black before changing the bit, similar to unplugging a table saw before changing the blade. Admittedly, there were a couple of times in the beginning when I forgot to turn the VFD power back on. I haven’t forgotten again after breaking a bit.
. Your emergency stop should not rely on uC or any software - it should be a hard mechanical switch to mains or some redundant, fail-safe circuit that cuts mains. When you are in a hole, take the shovel out of your hand 
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