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Search: Posts Made By: kamenges
Forum: LIVE PLC Questions And Answers May 20th, 2020, 03:16 PM
Replies: 61
Views: 2,413
Posted By kamenges
I'm not so sure. The funny thing is, being...

I'm not so sure. The funny thing is, being human, perception clouds reality for all of us. We would each spend 10 hours a week doing something we are capable of doing and can comfortably complete,...
Forum: LIVE PLC Questions And Answers May 20th, 2020, 02:39 PM
Replies: 51
Views: 1,292
Posted By kamenges
Maybe it can...ish. I thought there was a status...

Maybe it can...ish. I thought there was a status register that held the remainder of an integer division. Not exactly the same but...



Now there you are stuck. As far as I know you need to...
Forum: LIVE PLC Questions And Answers May 20th, 2020, 02:28 PM
Replies: 61
Views: 2,413
Posted By kamenges
Technically I think drbitboy is actually going...

Technically I think drbitboy is actually going the other way. I suspect he has all sorts of serious mischief he could unleash on unsuspecting maintenance guys everywhere. What he is trying to...
Forum: LIVE PLC Questions And Answers May 15th, 2020, 02:37 PM
Replies: 16
Views: 812
Posted By kamenges
Well, almost. While the the total kVA value of...

Well, almost. While the the total kVA value of the magnetizing voltage and current is not converted to work (it is returned to the line or drive on the next half cycle) that current still needs to...
Forum: LIVE PLC Questions And Answers May 13th, 2020, 02:24 PM
Replies: 41
Views: 1,729
Posted By kamenges
I think you are way high on your calculated...

I think you are way high on your calculated torque. It looks to me like you are using the pull roll RPM in the product roll torque calculation. When I hand calculate this I come up with more like...
Forum: LIVE PLC Questions And Answers May 11th, 2020, 09:57 AM
Replies: 41
Views: 1,729
Posted By kamenges
We put accumulators upstream of winders quite...

We put accumulators upstream of winders quite often. As JRW said, if the process is relatively slow (<200 FPM or so) , if the material is extremely sensitive to the results of wrinkles at the core...
Forum: LIVE PLC Questions And Answers May 8th, 2020, 12:48 AM
Replies: 12
Views: 676
Posted By kamenges
On that we agree. However, in the end, I still...

On that we agree. However, in the end, I still say:



STOP TRYING TO USE AB STUFF AS IF ITS A CODESYS PLATFORM, FOR CRYING OUT LOUD!! The longer you try to drive that square peg into a round...
Forum: LIVE PLC Questions And Answers May 7th, 2020, 09:12 PM
Replies: 41
Views: 1,729
Posted By kamenges
I'd like to see a web break on that second...

I'd like to see a web break on that second accumulator. Hopefully, some day, that intend to guard that bad boy.

Keith
Forum: LIVE PLC Questions And Answers May 7th, 2020, 09:05 PM
Replies: 12
Views: 676
Posted By kamenges
You are obviously comparing this to something. ...

You are obviously comparing this to something. What is it?

As I said before, if you are using an indexed array as a tag for the AOI instruction data (which is perfectly valid) and given that you...
Forum: LIVE PLC Questions And Answers May 7th, 2020, 08:56 AM
Replies: 41
Views: 1,729
Posted By kamenges
Can you design a small surface driven unwind? ...

Can you design a small surface driven unwind? This will decrease the required size of the unwind motor and takes away the concern of speed change.

Keith
Forum: LIVE PLC Questions And Answers May 7th, 2020, 08:54 AM
Replies: 18
Views: 809
Posted By kamenges
As Paullys50 points out, there is value in having...

As Paullys50 points out, there is value in having all the control functions encapsulated in a single point. The designer doesn't need to map out where specific control functions are located and...
Forum: LIVE PLC Questions And Answers May 7th, 2020, 08:39 AM
Replies: 41
Views: 1,729
Posted By kamenges
Yes, as I see it, accel/decel will be your...

Yes, as I see it, accel/decel will be your biggest concern. That also means product roll control will be a big concern. If it spins as freely as you say you can't just give it a yank and let it go....
Forum: LIVE PLC Questions And Answers May 6th, 2020, 05:16 PM
Replies: 41
Views: 1,729
Posted By kamenges
The big question is still how aggressively are...

The big question is still how aggressively are you accelerating? drbitboy points to the concern, albeit a little circumspectly. If the acceleration is very low or this is intended to be a constant...
Forum: LIVE PLC Questions And Answers May 6th, 2020, 05:08 PM
Replies: 25
Views: 623
Posted By kamenges
I'm not sure how you would know the code is not...

I'm not sure how you would know the code is not setting any bits unless they happen to be in the last 18 stitches you check.

I'm making something of an assumption here. I believe that the...
Forum: LIVE PLC Questions And Answers May 6th, 2020, 04:04 PM
Replies: 41
Views: 1,729
Posted By kamenges
How aggressively are you accelerating? Is the...

How aggressively are you accelerating? Is the roll just going to completely free-wheel? If so, how are you going to keep it from dumping it's contents on the floor when you stop?

Keith
Forum: LIVE PLC Questions And Answers May 6th, 2020, 04:01 PM
Replies: 9
Views: 304
Posted By kamenges
If the AOI still contains the original datatype...

If the AOI still contains the original datatype name you should be able to use that to reconstruct the drive I/O configuration. The datatype for the previous drive should have come over with the AOI...
Forum: LIVE PLC Questions And Answers May 6th, 2020, 03:11 PM
Replies: 25
Views: 1,158
Posted By kamenges
You have to be careful with this one. While this...

You have to be careful with this one. While this is often true with the DC bus voltage it may not be true of the IPMs. The IPMs often have a ground reference to them that is usually tied to the...
Forum: LIVE PLC Questions And Answers May 6th, 2020, 02:56 PM
Replies: 9
Views: 304
Posted By kamenges
Correct me if I'm wrong, Super Koop, but it...

Correct me if I'm wrong, Super Koop, but it sounds like your base issues is that the AOI you have written uses the PF525 instance data as InOut parameters. Now the new drive doesn't have the same...
Forum: LIVE PLC Questions And Answers May 6th, 2020, 02:43 PM
Replies: 25
Views: 623
Posted By kamenges
I really need to go back to STL school. No...

I really need to go back to STL school. No matter how long I stare at this I can't figure put how there is any access to anything other than bit 0 of any of the bytes being addressed.

Keith
Forum: LIVE PLC Questions And Answers May 6th, 2020, 02:07 PM
Replies: 25
Views: 1,158
Posted By kamenges
You can check the specs but I would expect that...

You can check the specs but I would expect that drive will operate just fine on 208V assuming you don't need full torque at full speed. Your bus voltage on 208 will be about 15% lower on 208 than on...
Forum: LIVE PLC Questions And Answers May 6th, 2020, 02:04 PM
Replies: 25
Views: 1,158
Posted By kamenges
The 139V is the leg to ground voltage that is a...

The 139V is the leg to ground voltage that is a natural consequence of the wye connection with a separately derived ground. It isn't a transformer ratio. I just didn't say it in the form people...
Forum: LIVE PLC Questions And Answers May 6th, 2020, 01:01 PM
Replies: 25
Views: 1,158
Posted By kamenges
The reason that the one leg of the delta is high...

The reason that the one leg of the delta is high is due to the way the delta is grounded. To get the two 120VAC legs to ground they center-grounded one of the legs. This results in a vector voltage...
Forum: LIVE PLC Questions And Answers May 6th, 2020, 12:30 PM
Replies: 25
Views: 1,158
Posted By kamenges
I would personally go with the isolation...

I would personally go with the isolation transformer. It more directly solves your problem and, if the PF755 ever fails, the overall cost will be less even though you have a drive you can use. I'm...
Forum: LIVE PLC Questions And Answers May 6th, 2020, 10:47 AM
Replies: 6
Views: 329
Posted By kamenges
Its been a long time since I've used Logix 5. ...

Its been a long time since I've used Logix 5. Does the hove thing work the other way? That is, if I hover over N187:4 in N[N187:4]:[N187:5], do I see the value of N187:4, do I see the referenced...
Forum: LIVE PLC Questions And Answers May 6th, 2020, 10:43 AM
Replies: 12
Views: 676
Posted By kamenges
Much better data encapsulation and interface. ...

Much better data encapsulation and interface.

I don't have an issue with the basic concept. You just need to understand the implications.

And as I have always said with AOI's, I can't...
Showing results 1 to 25 of 500

 
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