Rich M

I have some other controls I'm doing along with this. The gearing part is complete. I'm hoping to install with in a few weeks. As soon as I do, I'll post. I do have a question on the MAPC. If I want to change the start point of the Cut-N-Two for timming, how do I go about that. Right now on start up I tell the slave to go to the master position and then start the MAG. Then when doing a single, double or Multi cut-n-two they have there different MAPC instructions. The only way I have found so far is when starting up, put a value in the Master Lock Position before issueing the MAG instruction. I think it's becasue they are all Pending the previous cam. Am I on the right track or can you change this on the fly while running.

I will and thanks for all your help. I enjoy solving things but this is a little over my head but I'm learning. Thanks again.

That's what I'll have to work on. We do a lot of 2 boards in a row. The single works darn good and 3 or more works great, now just need it to do 2 and were all set. By the sounds of it, you see what I've been up against. It's not that simple as everyone thought. I looked over your program and I have to say, your pretty good. But like you said, it took you longer than you thought. Thanks for all your hard work and thinking on this one. Not an easy one but I'll keep trying to get it. Once I do, I'll get the video of it actually working in production. Thanks agian everyone. If anyone has thoughts on how to do 2 in a row with this logic, please reply.

Works pretty good. Singles look great. More than 4 look great. I'm having trouble just doing 2 in a row. Always wants to do 3. I'm pretty sure it's minor and will look more into it tomorrow. Ran out of time today. Thanks for this and I'll let you know how it goes tomorrow. If you happen to see anything, please let me know. Thanks,

This works and I can do as few or as many as needed. The only problem is like you said, "the repeated cycling may look odd" which it does and we wouldn't want the chains speeding up and slowing down if we had more than one cut-n-two. Not changing the specs either, just need it to slow down and then stay that way until we need to track 1 - 1 with the master. ...I know you may be getting tired of all my problems but it's darn close. Any idea's. Thanks guy's

I used the 5 point profile. Works pretty good. Here is a video of it. What I ended up with is getting the two in sync with a MAM, then gearing them together 1- 1. Then when it's time for the slow down, I used the profile. I had to put the Exacution Mode to once and the Schedule to immidiate. I have to be able to move the poijnt that it enters at so I couldn't use pending. Everything is working really well. The one problem I have is when I need to do more than one lug in a row. If I put the Mode to continuous, it just stays in the cam. Sometimes we need to do more than one in a row. Sometimes it may be 20. So that's the only problem left right now. This looks like it is going to work. After I get it to do several in a row, I'll send a video of it actually working and you will be able to see it seperate the boards. Any Idea's?... Here is the video..... Master Slave Moves.wmv

That's what I did today and it works great. The slave moves right into position and then they both start. I do notice that they stop for a brief period and it's a littel jerky but I'm sure I can get that smothed out. When I do the MCCP then the MAPC to issue the slow down for the board where the master moves 2 revolutions and the slave move one., Could you go into a little detail about what I should start with. What I would like is a smoth curve not jerky..... Sorry guy's that I'm not all that up to speed on all this but I assure you, you guy's help more than you realize....I appricate it a lot. I'll send you guy's a video of what we are doing and how it looks when were done.

We have absolute position feedback. If the system ever gets turned off, which it hardly ever does but if we loose power, I record the actual position it's at and then when the power comes back on I write the last known position. This isn't a problem and has worked great for some time. See my last post. That's what I really need help with. Getting the MO2AE to Sync the slave to the master after the operator hits an estop. Because when they hit an estop, we take the command signal away from the drives and they stop. Never do they stop at the same encoder count. Sometimes it's only off by 300 counts. When they start they system, the slave has to catch up or wait depending on if the slave is behind or ahead of the master. We never reverse the drive. If the slave is ahead of the master, the slave needs to pause until the mater catches up then follow. or vise versa. There isn't a problem with feedback ever. Very solid. I just need to know how to get the slave to catch up to the master if it's behind on startup....

I put them in sync by looking at each encoder and determining how far off one is from the other. Very simple. What I need to do is say the master is stopped and it's position is 2000 (out of 4000) and the slave is 1000 (out of 4000) when I start I need the slave to catch up to the master is at (2000 and climbing) and vise versa. If the master is 2000 and the slave is 2500, then the slave will wait for the master to reach 2500 then follow. Thats what I really need some help on. I can't seem to get passed this point. Trust me, I'm trying....Hey, wanted to say thanks to all that has posted. It's nice to have someplace to be able to ask questions and get responses....I reallly appricate it guys. Richard

The product can't handle overlaps. Needs to come back into position and on target...Tracking the master. I'm trying your suggestions but having some trouble. First the MAG instruction works when they are locked together. What happens is when we turn the vfd off and one coasts more than the other, when we start, they are not locked at the same encoder position. This can be a real problem becasue if the operator hits an estop, we take the command away from the drive. It's a safety issue. When we start back up, the slave needs to get back and lock up with the master. Any idea's to help with that portion? Thanks,

I need some HELP.. First I will explain what I'm trying to do. Hope nobody gets bored. This is for a planermill that trims the boards prior to sorting them. The boards get loaded into lugs via a lug loader upsteam. We will call this section of chain the Cut-N-Two Chains which has a powerflex 700 on it. The other motor is the Sorter Drive, another Powerflex 700. In normal operation these two drives travel at the same speed (1 to 1). They both have encoders on them. 0 - 4000 counts per revolution. The max speed they travel is 135 RPM. That's on the output of the gearbox which the lugged chains are attached. What we need to do is create a gap or empty lug, we have to slow down the Cut-N-Two chains and then catch back up creating a single empty lug. The reason for that is once the board gets handed off to the Sorter drive it goes through a trimsaw where we can cut the board in half. The empty lug will be behind this board and after we cut it we will raise up some liftskids and set the other half into the empty lug so we can sort it into bins. I have on my test bench two motors with encoders and two drives. I have them wired up to a MO2AE. I've got to the points were I can gear 1 to 1 and it does a good job. It's the slowing down to create that empty lug I'm having problems with. Any help would be appricated… Thanks everyone. Richard