Introduction & Overview (0:00-1:19)
0:05-1:20: “Hello. Hello. Welcome back to another training video. I’m Chris, and this is Mason. Once again. Uh, we are gonna continue on with the two days of training, and in this video specifically we’re gonna focus on crash and recovery. You ever crashed the machine before Mason? I have one time. That’s all right. That’s all right. There’s always, uh, many opportunities to do so. It’s just being part of human, right? Mm-hmm. So what we’re gonna do here is we’re going to actually perform a physical crash on purpose. Mm-hmm. Uh, don’t recommend trying to do this with your machine if you don’t have to. We’re gonna do it here for you instead. Uh, but we’re gonna perform a physical crash and see what happens to the machine as, uh, what it does automatically when it hits a crashing situation. Mm-hmm. And then we’re gonna talk about, um, how to recover from either an emergency stop like crashing or from a preventative crash, like us seeing something is about to happen, we stop at how do we recover and, and also the steps of preventing crashes altogether. Right. Okay. We’ve actually already been participating in some of those just, and so we’ll, uh, we’ll bring some up as, as time goes on. So I’m gonna set this up to where we’re gonna again, perform a physical crash. Mm-hmm. Now, instead of driving the cutter or the tool into a table fixture here,”
Crash Demonstration (1:19-5:14)
1:18-4:53: “or the tool into a table fixture here, what I’m gonna do is I’m going to actually just, um, have the machine move up against the side of the gantry, okay. A physical barrier, um, along the y axis that it can’t travel past, right? Mm-hmm. Now, this actually brings up a valid point because if I, if I look at this, I, if I move my machine right, okay, it’s gonna move freely. If I move the machine right now, it automatically stops the motion of the machine, even though I’m holding them the command. Okay? Those are called soft limits, which help prevent you as operator, um, from crashing outside of the work area of the machine, right? Mm-hmm. So you have what, what’s called a maximum soft limits for an access. So that’s the maximum y and this is the minimum y going in the opposite direction. Okay? Okay. And even though I was still holding down that command, you could see it came to a slow down procedure and then stopped before it hit that hard physical stop, right? Mm-hmm. Um, and so that’s, uh, that’s the supplements built into all axes. You have a maximum and minimum travel of the y of the X and of the Z axis. The z axis is interesting because it can actually travel below the table surface. Mm-hmm. So this is where we have to, um, be aware of what can happen. So if we bring this over here, so this is the X axis soft limit right there, right? Mm-hmm. And if I bring this down, that’s the z axis soft limit. Okay. And that goes well beyond the table fixture. Yeah. Right? That’s be, we do that because we need the machine to be able to reach to small diameters and pass center in our turning center mm-hmm. As well as maybe parts down here in our vertical table. Yeah. Right? Uh, so that’s, uh, that’s just something we need to be aware of that we can crash the machines, um, within the work envelope if we’re not careful, right? Mm-hmm. Uh, well that’s why we talked about slowing down your jog motion. If you’re not used to the machine moving so fast, then hey, just slow down the motion so it’s not as hard to control, right? Yeah. Um, that’s one of many ways of pr being, you know, preventing crashes. Mm-hmm. Is just, uh, taking the extra steps to protect yourself. Now we’re going to set up, like I mentioned, a, an actual physical crash. Okay? So I’m gonna turn off these soft limits that we just barely demonstrated that pre prevent the machine from going outside of the boundary, right? Or hitting a physical barrier. Mm-hmm. The, the area that I’m going into is actually password protected and, uh, requires a technician to get into it and to, um, check settings or that type of thing. So if you’re in, um, your machine needs troubleshooted ’cause it gets technical support, this type of page is what they would go into when they log into the machine and fix any issues with the platform. Mm-hmm. Okay. So, and here I’m gonna turn the soft limits off and now, okay. So if I move the machine, it’s going to perform a physical crash. So again, just to make this a little softer, I am going to actually just slow down the jog speed instead of going 100% okay. Which is unnecessary mm-hmm. To perform a crash, uh, let’s just go like 30%. Okay? A third of the speed, um, we can see here if we move the machine, okay? It is still moving, but not again, unnecessarily fast in order to crash. So mm-hmm. I’m going to now bump this, um, machine into the side of the gantry and let’s see what happens.”
4:57-5:15: “Okay. So I’m still holding down the command mm-hmm. And we hit a physical barrier. Okay? We’ve crashed the machine and it had a little, you know, a little bump, a little click, but now that axis no longer moves. Okay? Okay. So what has happened is in each motor in the system,”
Recovery Process (5:14-8:23)
5:12-6:52: “So what has happened is in each motor in the system, you have two wires. You have one wire is receiving signals from the driver telling it to go this many pulses, you know, to move this, this distance. And then the second wire is sending information from the motor back to the driver saying, I was able to perform this many pulses, I was able to go this distance. Right? Okay. Um, and so what happened there is the motor sent signal back to the driver saying, I was unable to go the command that you told me. And the driver said, okay, then I’m just gonna shut all commands off. It’s called tripping the driver. Mm-hmm. Okay. And that axis is now deactivated on our maverick four by eight system. Okay? So this is how it is for the maverick. Four, four by four, four by eight. The renegades, the rogues, all these have these built in closed loops, um, motors so that it automatically shuts off the power if by chance we hit a physical barrier, um, along that axis. Okay? Okay. Now, other axes, technically I can still move. Okay? But I can’t move that y axis. It’s been tripped. Okay? The only way to recover from a tripped driver where we’ve crashed it like this, is to power off the machine and then power it back on. Okay? Okay. So I’m just gonna bring it down to the other end of the machine and trying to be at least a little careful not to crash it on the other axis. Mm-hmm. We’re just gonna bring it close to that end, and now we can power off the machine and power it back on. Okay. All Right. Now that you’ve powered down the machine, I wait about 10 seconds before I turn it back on, and it’s been that timeframe, so you can now power the system back on and now we’ll reset the driver.”
6:56-7:04: “So now that you’ve powered the machine off and on again, the controller automatically reboots and we’ll just need to home the machine like we normally do.”
7:08-8:12: “And once it’s done with that sequence, we’re all back on track. That’s all it takes for a recovery process if you ever have a physical crash. Mm-hmm. Now that, I guess the other thing that could happen is if the cutter broke or not, right? Mm-hmm. So if the cutter’s hitting something it’s not supposed to and it’s snapped or whatever the case may be, uh, then you’ll have to obviously take the time to replace that cutter and put it in the tool holder and, and add it to your tool rack. Um, but from here, the machine is actually operable and ready to go from here. Okay? That’s all it takes. Uh, so it has the preventative measures of, again, going outside the box, outside the work area, but it doesn’t know what’s inside that box. Mm-hmm. Which is why we have, um, pre preventative measures that we’re gonna be taking. Now, there are other types of, of stopping situations. There are emergency stops for when the machine is actually crashing like we just did, but there’s also stopping the machine from preventing a crash from happening. So for example, let’s say, Oh, wrong button.”
8:16-8:22: “Okay, so let’s say I was setting up a smart tool, right?”
Preventative Measures (8:23-12:07)
8:23-10:43: “And I wanted to make this my easier on top. Mm-hmm. But I forgot to place my smart tool pad underneath. Mm-hmm. And I go over here and I go to smart tool and I do multiple tools, right? Mm-hmm. Well, it’s gonna start plunging, even though I don’t have a smart tool pad underneath. Yeah. Something’s gonna happen, right? Yeah. So I can stop the machine, we can press the emergency stop preventing a crash from happening, nothing is actually physically crashed yet, and then we can continue on. Okay? Okay. So, um, that is, uh, an example of, again, stopping the machine, but nothing has actually physically crashed, whatever the situation may be. Maybe you started a program and it did a tool change, it touched off the pad, but it went to the wrong corner. Mm-hmm. Because you accidentally set up X, y, Z in the wrong corner, right? You’re stopping the machine before it even starts cutting. Yeah. So there’s a bunch of situations in which that will happen as you’re learning the machine, as you’re using the machine, just ’cause you know, we’re all human, we make those type of simple mistakes, which is why job sheets are so important, which is why the checklist that we went through are so important. They’re gonna help protect you from accidentally making those mistakes. So, um, there are three steps that I perform when I stop the machine. Okay? Um, because something is going to happen. Um, and there’s also some situations in which the machine, just like any other computer, just can get stuck in a loop, right? Mm-hmm. It’s just not continuing on from, from its task. Uh, if it ever does something like that. These are the three steps that I do. The first one I do is I push the reset button in the top right corner. Okay? Technically the emergency stop button does the same thing. Mm-hmm. Presses the reset button, okay. That does the exact same thing. And most of the time that actually lets you just continue on. For example, here, I can continue on and do my setup and operations just like I normally would, right? Um, but there are some situations to which it just doesn’t want to keep working for, for any situ, for any given reason. Um, so the second thing I do is I go back to the home screen and I rehome the machine. Okay? Okay. Now, before I do that, if I rehomed here, it would just take a long time to get to that corner. Yeah. So I usually bring it to that corner with park system,”
10:52-12:08: “And then we home the system ’cause it’s back in that corner, so the homing won’t take very long. Mm-hmm. So that’s my second layer of just, again, resetting or recovering the machine. If by chance it won’t continue doing what I know it should be doing. Um, the third stage is the most common technical support answer of all time. Mm-hmm. Have you tried turning it off and on again, right? Yeah. So that is the third and final result. If by chance you, it, it just won’t resolve what it’s stuck in, um, just power down the machine, power back on kinda like what we did with the hard, hard crash. And that just goes a layer deeper in resetting the system, making sure we, we start from ground zero. All right? Okay. Um, so those are the three steps I do reset home the system or power it off in that order. The last one is if that still doesn’t work, technical support, right? Mm-hmm. And so that’s where we have our technical support tickets that we have on our website, go legacy woodworking.com. Um, you work here so you get the advantage of working with the technicians already. Yeah. But yes, but as, as customers like yourself, you go to legacy woodworking.com and you’re gonna click in the, uh, top right menu and go to the ticket support. Okay? Or you can fill out a ticket there. It’s the support ticket link in the menu. Um, fill out the form, say who you are,”
Best Practices for Avoiding Crashes (12:07-14:20)
12:06-14:20: “Um, fill out the form, say who you are, what machine you have, and give us a description of the problem. And we’re gonna have our technicians contact you as soon as possible. And that puts you in the system so that you never get your, you know, your ticket lost and we can get you resolved as soon as we can. Okay? So that’s what you’re gonna do. If we’re by chance the machine just won’t work like it should. We’ve done all the stages, we’ve done reset, we’ve done home, we’ve done turn it off and on, it still won’t work. Let’s get some more experts involved just in case. Okay? All right. So that is crash recovery. Now the, the main things I like to recap about preventing crashes are what you’ve already been doing. Mm-hmm. We just mentioned them, we said job sheet, right? Yep. In my opinion, you should always use a job sheet in every single part that you use because you never know when you assume something and it could be something else. Mm-hmm. Right? So a job sheet tells us cutters, which tool numbers, they tell us the x, y, Z zero position, right? Um, they even tell us clearances on our Z axis for, for fixturing and clamping if we need to. So they even give us notes if we decided to add notes to our job sheet in the designing and programming software for our benefits. And so they are a, a cheat sheet in my situation of making sure that I don’t mess up the machine or make a mistake as I’m setting up again to run apart. So make sure to use your job sheet. The second one is that operations checklist. Okay? It’s a game changer. Um, just like a, a pilot on an airplane, someone that’s been flying for 40 years, guess what? They still go to that checklist and they check every single item on that list before they fly that plane every single time. Um, this is no different, okay? You’re, you’re running an, an automated piece of machinery that does some phenomenal things, but to protect yourself, use a, use a checklist, and it will help you from making those tragic mistakes that can happen. So, uh, let’s keep that in mind and that will, that will take care of crash and recovery for today. You have any other questions for me about, again, recovering or crashing the machine in, in any way? Uh, no. It’s, I think we’re good. Pretty straightforward? Yeah. Okay. Awesome. Okay, guys, we’ll see you guys in the next video. We’re gonna be wrapping this up with maintenance”
Conclusion (14:20-14:40)
14:18-14:22: “We’re gonna be wrapping this up with maintenance and how to take care of the machine. So we’ll see you then.”
