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Search: Posts Made By: Timbert
Forum: LIVE PLC Questions And Answers January 30th, 2019, 08:54 PM
Replies: 10
Views: 516
Posted By Timbert
The 10 inch/s or 250 mm/s comes from RIA...

The 10 inch/s or 250 mm/s comes from RIA R15.06-1999.

It does not say that if a robot moves at that speed or slower than it does not need guarding. What it does say is that if the speed is limited...
Forum: LIVE PLC Questions And Answers January 28th, 2019, 07:37 PM
Replies: 9
Views: 528
Posted By Timbert
I'm a little bit suspicious about RF directly...

I'm a little bit suspicious about RF directly causing a 120V relay to operate. I'm sure in theory it would be possible but that would be one powerful transmitter. Either that or I don't fully...
Forum: LIVE PLC Questions And Answers January 28th, 2019, 07:25 PM
Replies: 56
Views: 2,915
Posted By Timbert
Yeap. "Trust but verify." Is an important lesson...

Yeap. "Trust but verify." Is an important lesson for everyone.

This story also reminds me of a couple of rules. Don't work when distracted and slow down and take your time to do things right....
Forum: LIVE PLC Questions And Answers January 28th, 2019, 07:16 PM
Replies: 12
Views: 477
Posted By Timbert
I use the rule of thumb that 10%, minimum 1, of...

I use the rule of thumb that 10%, minimum 1, of active components should be spared.

This means that if there are ten or less of item A then you maintain one spare on site. Twenty or less then you...
Forum: LIVE PLC Questions And Answers January 25th, 2019, 01:03 PM
Replies: 46
Views: 3,351
Posted By Timbert
I like ePlan. It has major drawbacks however. It...

I like ePlan. It has major drawbacks however. It is very expensive. Not very intuitive. Imagine a schematic capture package where you never draw a wire directly. It is a database not a drawing....
Forum: LIVE PLC Questions And Answers January 25th, 2019, 12:39 PM
Replies: 11
Views: 538
Posted By Timbert
Still NOT a lockout. You must not use an...

Still NOT a lockout.

You must not use an estop device in this way to remove hazardous energy [period--full stop].

Don't believe us? See Control of hazardous energy  Lockout and other methods....
Forum: LIVE PLC Questions And Answers January 4th, 2019, 10:00 PM
Replies: 58
Views: 4,608
Posted By Timbert
A couple of years back, I heard from a colleague...

A couple of years back, I heard from a colleague from where I used to work about a PLC that we had programmed in the late 80's. The program hadn't changed in all those years but it took them almost...
Forum: LIVE PLC Questions And Answers October 25th, 2018, 01:52 PM
Replies: 15
Views: 989
Posted By Timbert
i would recommend AB's Safebook...

i would recommend AB's Safebook (https://literature.rockwellautomation.com/idc/groups/literature/documents/rm/safebk-rm002_-en-p.pdf). There is a lot of information in there. It will tell you about...
Forum: LIVE PLC Questions And Answers September 25th, 2018, 08:52 PM
Replies: 19
Views: 1,532
Posted By Timbert
I had to double check to make sure I didn't write...

I had to double check to make sure I didn't write this myself or whether you worked here.

I've spent way too much over the last two years rebuilding a control system because of this. Although we...
Forum: LIVE PLC Questions And Answers September 25th, 2018, 04:33 PM
Replies: 15
Views: 1,058
Posted By Timbert
A followup is a discussion of how they are...

A followup is a discussion of how they are similar and one affects the other (or becomes a point of failure). It was a while back one of the big box retailers had their credit card system compromised...
Forum: LIVE PLC Questions And Answers September 24th, 2018, 10:47 PM
Replies: 15
Views: 1,058
Posted By Timbert
How do you balance security with remote...

How do you balance security with remote access/troubleshooting?
It's nice to have a secure system but if it isn't working because the one guy who needs to connect and reprogram it is 3500 miles...
Forum: LIVE PLC Questions And Answers August 27th, 2018, 12:54 AM
Replies: 4
Views: 630
Posted By Timbert
A lot depends on the type of machine, industrial,...

A lot depends on the type of machine, industrial, and country of origin, and destination country. There are any number of standards.

MIL-STD-882
IEC 62061
IEC 13849
ANSI RIA-15.06

Just to...
Forum: LIVE PLC Questions And Answers August 17th, 2018, 10:14 PM
Replies: 3
Views: 332
Posted By Timbert
If you had one contact with high resistance did...

If you had one contact with high resistance did you check the rest? I would be a bit concerned that age or exposure to the environment had compromised that contact and that others might need...
Forum: LIVE PLC Questions And Answers August 13th, 2018, 10:56 PM
Replies: 7
Views: 625
Posted By Timbert
There are some special fibers, such as...

There are some special fibers, such as polarization-maintaining fiber, but that is used when you are trying to detect the polarization of light with optical instrumentation. I don't know what IT...
Forum: LIVE PLC Questions And Answers July 11th, 2018, 10:20 PM
Replies: 4
Views: 580
Posted By Timbert
Absolutely. The key is when you set them up...

Absolutely.

The key is when you set them up you need to copy all the *.LIC files to the proper activations folder on each computer (default is C:\Users\Public\Documents\Rockwell...
Forum: LIVE PLC Questions And Answers July 7th, 2018, 11:00 PM
Replies: 13
Views: 1,280
Posted By Timbert
Is 1971 a long time ago? It is old, but it...

Is 1971 a long time ago?

It is old, but it still works. If you don't want to go through a third party it's not bad. It's not really secure but communications only takes place between the client...
Forum: LIVE PLC Questions And Answers July 1st, 2018, 12:22 AM
Replies: 2
Views: 536
Posted By Timbert
If you are just dealing with a simple drive, you...

If you are just dealing with a simple drive, you can use Siemens Starter...
Forum: LIVE PLC Questions And Answers May 20th, 2018, 02:39 AM
Replies: 15
Views: 1,554
Posted By Timbert
I think it is because it is unneeded. ...

I think it is because it is unneeded.

According to the GuardLogix User Manual, 1756-RM020:


All safety input tags (inputs, consumed, and mapped) are updated and frozen at the beginning of...
Forum: LIVE PLC Questions And Answers May 3rd, 2018, 10:01 PM
Replies: 17
Views: 6,054
Posted By Timbert
Have you measured the quality of your wireless...

Have you measured the quality of your wireless connection? It could be that communications really is dropping out.

What wireless setup are you using?

Obviously, the quickest test would be to...
Forum: LIVE PLC Questions And Answers April 26th, 2018, 03:30 PM
Replies: 5
Views: 857
Posted By Timbert
I got a few questions to ask. It might be that...

I got a few questions to ask. It might be that you know all of this but you don't mention some things in your post so it got me wondering.

You don't mention the 1756-LSP, or add safety I/O, or...
Forum: LIVE PLC Questions And Answers April 16th, 2018, 03:29 PM
Replies: 4
Views: 615
Posted By Timbert
The work around I would guess would be to hand...

The work around I would guess would be to hand enter all the data. :shoot:

I checked, the oldest I have is version 1.1.9 dated December 2015. So, 1.1.6 must be ancient.

For what it is worth...
Forum: LIVE PLC Questions And Answers April 14th, 2018, 01:47 AM
Replies: 2
Views: 480
Posted By Timbert
Look at the GuardLogix Controller User Manual...

Look at the GuardLogix Controller User Manual (http://literature.rockwellautomation.com/idc/groups/literature/documents/um/1756-um020_-en-p.pdf), specifically page 81, which deals with replacement of...
Forum: LIVE PLC Questions And Answers April 9th, 2018, 01:46 PM
Replies: 11
Views: 911
Posted By Timbert
If the cables are routed (and secured) in such a...

If the cables are routed (and secured) in such a way that they can only connect to one sensor (and the other end is hardwired or in an enclosure), I would say that they are just as safe as a...
Forum: LIVE PLC Questions And Answers March 30th, 2018, 10:26 PM
Replies: 13
Views: 1,073
Posted By Timbert
I would be telling them "You are correct that we...

I would be telling them "You are correct that we will not be discussing this further, because we are going with another vendor."

If they cop this kind of attitude before they get your money, what...
Forum: LIVE PLC Questions And Answers February 26th, 2018, 12:25 PM
Replies: 10
Views: 1,323
Posted By Timbert
I'm hoping if it was someone on the boards here,...

I'm hoping if it was someone on the boards here, they would do better than this.

Dollar bill on a fishing line is old. It was proceeded by long time by coin on a wire. Inflation you know.

Any...
Showing results 1 to 25 of 376

 
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