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Search: Posts Made By: rsdoran
Forum: LIVE PLC Questions And Answers December 1st, 2007, 08:08 PM
Replies: 4
Views: 1,578
Posted By rsdoran
This explains 2 & 3 wire...

This explains 2 & 3 wire http://www.patchn.com/twowire.htm

Have not read the PowerFlex manual but if its has its own control ckt power then you may need to use interposing relays or relay outputs.
Forum: LIVE PLC Questions And Answers December 1st, 2007, 08:03 PM
Replies: 38
Views: 4,213
Posted By rsdoran
Because in the past we got NUMEROUS poorly asked...

Because in the past we got NUMEROUS poorly asked questions from students on a daily basis. The idea is to help people LEARN, not just automatically give them an answer, so they will understand what...
Forum: LIVE PLC Questions And Answers December 1st, 2007, 07:52 PM
Replies: 12
Views: 3,197
Posted By rsdoran
Try reading this...

Try reading this http://en.wikipedia.org/wiki/SCADA

Basically tags are the data points read from and written to in the PLC. Instant HMI has a demo version you could experiment with to determine...
Forum: LIVE PLC Questions And Answers December 1st, 2007, 06:48 PM
Replies: 12
Views: 3,197
Posted By rsdoran
http://www.instanthmi.com/ihmisoftware.htm ...

http://www.instanthmi.com/ihmisoftware.htm

Depends on your needs but an HMI may be cheaper, check this out and look at the First Time Buyer option:...
Forum: LIVE PLC Questions And Answers December 1st, 2007, 05:11 PM
Replies: 7
Views: 4,464
Posted By rsdoran
I would probably use a safety monitoring relay in...

I would probably use a safety monitoring relay in a situation like this. I have no idea about that specific device.
Forum: LIVE PLC Questions And Answers December 1st, 2007, 04:30 PM
Replies: 29
Views: 11,045
Posted By rsdoran
NFPA 79 Electrical Standard for Industrial...

NFPA 79 Electrical Standard for Industrial Machinery states that Start or ON shall be Green but Black, White, or Gray is permissible but NEVER Red and vice versa for Stop i.e. it is Red and NEVER...
Forum: LIVE PLC Questions And Answers December 1st, 2007, 12:14 AM
Replies: 29
Views: 11,045
Posted By rsdoran
Personally do not like that.

Personally do not like that.
Forum: LIVE PLC Questions And Answers November 30th, 2007, 10:44 PM
Replies: 12
Views: 2,615
Posted By rsdoran
GEEZ, did not think about this, Norm said it was...

GEEZ, did not think about this, Norm said it was for an enclosure (I assume panel by that). A 5000 BTU unit (which is 120 normally) would be OVERKILL.

208vac 3 phase definetly has 120vac 1 phase,...
Forum: LIVE PLC Questions And Answers November 30th, 2007, 05:39 PM
Replies: 29
Views: 11,045
Posted By rsdoran
I have no idea what the standard is in the UK,...

I have no idea what the standard is in the UK, expect IEC would be the norm. IEC and NFPA state blue for +dc and blue/white stripe for - dc.

In the past I got use to 24vdc being brown + and blue...
Forum: LIVE PLC Questions And Answers November 30th, 2007, 11:56 AM
Replies: 4
Views: 1,560
Posted By rsdoran
Multiple posts on the same subject will not get...

Multiple posts on the same subject will not get better results.

Stick with the original thread AND explain exactly what you have.
Forum: LIVE PLC Questions And Answers November 30th, 2007, 11:50 AM
Replies: 12
Views: 2,615
Posted By rsdoran
The +/- 10% should be the same as 208/230. Since...

The +/- 10% should be the same as 208/230. Since there have been numerous commercial facilities in the US that have 208vac most things are designed to use it but if you want to be "safe" then use the...
Forum: LIVE PLC Questions And Answers November 30th, 2007, 03:11 AM
Replies: 7
Views: 2,053
Posted By rsdoran
That is BS, if cost that much then look into...

That is BS, if cost that much then look into other suppliers.

For US people we are talking less than 2HP.

I can get a DRIVE for 2HP or so around $200.

Go whatever route you must.
Forum: LIVE PLC Questions And Answers November 30th, 2007, 02:58 AM
Replies: 19
Views: 6,626
Posted By rsdoran
I think you save time AND money just replacing...

I think you save time AND money just replacing them, start with the first one to fail.

www.hmidirect.com (http://www.hmidirect.com) may not be the greatest BUT have something less than $200 that...
Forum: LIVE PLC Questions And Answers November 30th, 2007, 12:44 AM
Replies: 19
Views: 6,626
Posted By rsdoran
For me it has been over 10 years working with a...

For me it has been over 10 years working with a DL (they were old then), did not have much luck with them overall. I think it is GREAT that you have some that are still working BUT NOW I would not...
Forum: LIVE PLC Questions And Answers November 30th, 2007, 12:09 AM
Replies: 19
Views: 6,626
Posted By rsdoran
Old thread, even older device, just throw it out...

Old thread, even older device, just throw it out and get something newer. I have no idea why HyperTerminal was mentioned, not applicable.
Forum: LIVE PLC Questions And Answers November 29th, 2007, 07:24 PM
Replies: 13
Views: 2,045
Posted By rsdoran
I am really curious

How do you get a camera to record before a fault occurs?

To show I am not trying to be facetious, does the camera record all the time and overwrite over a period of time then when a "trigger"...
Forum: LIVE PLC Questions And Answers November 29th, 2007, 01:00 PM
Replies: 6
Views: 2,031
Posted By rsdoran
The key may be the power supply, it must be...

The key may be the power supply, it must be capable of driving muliple devices. If using a 10-12v supply it may not be enough to provide for 2 devices in a loop. You may need to determine if active...
Forum: LIVE PLC Questions And Answers November 29th, 2007, 09:49 AM
Replies: 11
Views: 1,501
Posted By rsdoran
Its in the manual, Mickey posted Chapter 4 and...

Its in the manual, Mickey posted Chapter 4 and its there. May want to upgrade your Adobe Reader, it is free.

http://www.plctalk.net/qanda/uploads/mlcomm.jpg
Forum: LIVE PLC Questions And Answers November 29th, 2007, 09:43 AM
Replies: 7
Views: 2,053
Posted By rsdoran
You could but I am not sure why you would. There...

You could but I am not sure why you would. There should not be any cost savings involved and if the drive did fail then the unwind would be down; while with separte drives at least one roll could...
Forum: LIVE PLC Questions And Answers November 27th, 2007, 10:16 AM
Replies: 8
Views: 3,382
Posted By rsdoran
The thing I see is you are using a very old...

The thing I see is you are using a very old version of RSLogix and probably an old version of Linx, what kind of computer are you using?

There may be issues if the OS is above Win9x and does not...
Forum: LIVE PLC Questions And Answers November 27th, 2007, 09:23 AM
Replies: 4
Views: 1,412
Posted By rsdoran
Have you taken the time to read this?...

Have you taken the time to read this? http://catb.org/~esr/faqs/smart-questions.html#translations

Just a suggestion, take the time to explain why you are asking a question and when you make a...
Forum: LIVE PLC Questions And Answers November 26th, 2007, 03:31 PM
Replies: 66
Views: 8,132
Posted By rsdoran
Blocking feedback, diodes only allow current to...

Blocking feedback, diodes only allow current to flow one way. His early design when it was in Auto Mode the common fed back through the STOP PB to the Start and Reverse. The diode blocked current...
Forum: LIVE PLC Questions And Answers November 25th, 2007, 01:16 PM
Replies: 66
Views: 8,132
Posted By rsdoran
I will reiterate I am just a Bubba, just trying...

I will reiterate I am just a Bubba, just trying to throw some thoughts out there to help along people to develop their own ideas. Personally would do something like this completely different but...
Forum: LIVE PLC Questions And Answers November 25th, 2007, 12:30 PM
Replies: 66
Views: 8,132
Posted By rsdoran
Will accede the Reverse aspect, did not consider...

Will accede the Reverse aspect, did not consider that, have to think about that.

Not sure what you mean about R1 affecting the Stop, the idea was when in manual everything is done by hand, when...
Forum: LIVE PLC Questions And Answers November 24th, 2007, 02:20 AM
Replies: 66
Views: 8,132
Posted By rsdoran
How does the PLC STOP it in AUTO (PLC control)...

How does the PLC STOP it in AUTO (PLC control) mode?

If you switch R2 with R1, again you have Power on the pushbuttons.

Look at the manual for AB 160 SSC:...
Showing results 1 to 25 of 500

 
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