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Member Information and Posts by kevinc
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Topic: PLCs and related questions.
from the Looking for a Rosetta stone department...
Any references on how to read 984 style ladder logic?
Originally posted by David Campbell on 21 January, 2004 - 12:09 pm
Just been handed some ProWorx ladder diagrams and trying to figure out what some of the strange blocks mean...
New Replies:
I thought this to be the case, and indeed I confirmed it with an old hand in Modicon. they are...
Topic: Application Questions and Problems
from the Forum department...
Safety for a dial table indexer?
Originally posted by Escabara on 3 November, 2012 - 7:37 pm
A simple problem, but I'm not even sure where to begin. A dial table with operator interaction, and not sure what parts must be protected by an e-stop.
New Replies:
I have used Rockwell's Powerflex drives with the safe-off feature, coupled with the Camco indexer,...
Topic: Information resources, documentation.
from the I&C department...
book for I&C
Originally posted by Hasan on 30 October, 2012 - 4:21 am
books for I&C engineer
New Replies:
This is a very good text: ...
Topic: Application Questions and Problems
from the Instru department...
Power Supply Grounding/Earthing Concepts
Originally posted by kk on 25 November, 2007 - 6:47 pm
Want some information about floating and grounded power supply systems
New Replies:
This might be helpful: ...
Topic: PLCs and related questions.
from the You have got to be joking department...
Multiple Controllers in RSLogix5000
Originally posted by Kevin on 25 October, 2012 - 3:29 am
Anybody used multiple controllers on a single rack in RSlogix5000, any tips etc..
New Replies:
The moderator is correct, I went back and checked and even though the first link has "Access...
Yes you can have multiple processors in the same rack, and there is no real configuration issues....
Topic: Motion control, servos, steppers, etc.
from the dc link under voltage department...
weg ac drive tripping
Originally posted by lutej on 24 October, 2012 - 4:56 am
weg ac drive tripping on voltage dips
New Replies:
I don't really think disabling protection is the best strategy. If you are that serious about...
Topic: Engineering and workplace issues.
from the No Man's Land department...
Large area protection
Originally posted by Ken Crater on 22 October, 2012 - 8:26 am
What are the most effective ways to protect the area around an automated machine that is physically large?
New Replies:
Ken, also take a look at these: ...
Topic: Power generation equipment control.
from the Gossip for nerds department...
India Blackout(s)
Originally posted by nic on 31 July, 2012 - 8:17 pm
info on the blackouts in India
New Replies:
Here is a link to the official report: http://www.powermin.nic.in/pdf/GRID_ENQ_REP_16_8_12.pdf...
I did see on the CNN website, that a possible cause is that the rainfall (it is monsoon season...
Topic: Sensor technologies.
from the Automation and control system department...
Control cable and signal cable
Originally posted by tamil on 4 October, 2012 - 7:17 am
Why cant use core cable for sensors signals instead of pair cable?
New Replies:
Tamil, if you are asking why we would use a paired cable (such as a twisted pair) for...
Topic: Engineering and workplace issues.
from the electrical department...
bus bar heating
Originally posted by ali on 15 September, 2011 - 11:45 am
bus bar heating and i need the probable causes for it in order to solve them.
New Replies:
Just a quick question, are you seeing 550V plant-wide? This is a little alarming, but I have seen...
Topic: Local and wide area networking in factory automation.
from the Forum department...
Will Cloud-based SCADA come?
Originally posted by Bright on 9 June, 2011 - 12:18 pm
Will Cloud-based SCADA come?
New Replies:
With window$ it is necessary to reboot long before there is a speed issue....well, an abnormal loss...
Topic: Computers in manufacturing; also hardware discussion.
from the Something not to be looking forward to. department...
New Virus Targeting HMI/SCADA Systems?
Originally posted by M Griffin on 15 July, 2010 - 7:41 pm
A new virus appears to be directly targeting HMI/SCADA systems.
New Replies:
Yeah, I was just wondering about the mechanics of the hack. It seems that it would take someone (or...
Topic: Local and wide area networking in factory automation.
from the Forum department...
Cyber Security for the Control System
Posted by Kevin Cooper on 5 January, 2011 - 1:29 pm
Suggestions for 2011 - What are some possible steps to avoid virus infections that might cause serious problems in control systems?
Topic: Engineering and workplace issues.
from the Instrument department...
Maintenance instrument multimeter
Originally posted by Gokul chand on 28 December, 2010 - 8:59 am
When multimeter probes shorted checking of probes in hazardous area or
any other area is spark will generated?
New Replies:
You might look at...
Topic: Software, including programming, OS issues, etc.
from the Yet another Windows virus department...
New Windows Virus Targeted at Industrial Controls
Originally posted by M Griffin on 14 September, 2010 - 4:30 pm
Security researches have revealed new virus which has been specifically designed to take over industrial controls and has been detected in a number of plants.
New Replies:
Qarsaan, it will be interesting to see what you do to mitigate things like this. Please post if you...
That's a good point and it seems to be echoed in a new article in ISAs Intech-...
I would like to steer this discussion back to the Stuxnet topic. Interestingly, this has been...
Topic: Application Questions and Problems
from the Forum department...
Board mains for ships?
Originally posted by Waldemar Lederer on 16 December, 2010 - 8:22 am
What is the electrical main supply on ships like?
New Replies:
try starting here: http://nrotc.unm.edu/ns105/Lesson%2016%20-%20Electrical%20Distribution .ppt...
Originally posted by Victor Zaltsman on 13 March, 2009 - 4:26 pm
Discussion about floating auxiliary power supply for PLC I/O versus grounded PS (means -24VDC terminal of PS connected to the grounding bar)
New Replies:
For those that are still interested in this issue- go to ABs knowledgebase and search for 14088 -...
Topic: Sensor technologies.
from the how calculate total error department...
Load cell error
Originally posted by Libero on 18 May, 2006 - 12:18 am
I'd like to know how to calculate the final total error I'm going to get, knowing detailed spec of a Load cell
New Replies:
Research the word "uncertainty". This may answer your questions. ...
Originally posted by Gerald Beaudoin on 25 July, 2007 - 11:52 pm
Grounding shields, Control wiring vs. VFD cables. Why don't the same rules apply in both cases?
New Replies:
To further add fuel to this thread- take a look at ABs System Design for Control of Electrical...
Topic: Information resources, documentation.
from the Automation List department...
Emergency Stop Circuits and controls
Originally posted by Anthony Kerstens on 15 February, 2000 - 12:36 pm
We have a problem with operators using the emergency stop circuits to power down a line rather than doing the "right thing" and going through the sequence of pressing the individual stop PB's (not that it's hard since they're on
the same control desk).
New Replies:
Something that you might try to discourage the practice of hitting the e-stop button is to place an...
Topic: Communications systems and equipment.
from the Slick SLC question department...
SLC 5/05 communications
Posted by Zaphod on 5 January, 2010 - 8:47 am
Channel Configuration and communication path IP addresses are different.
Topic: PLCs and related questions.
from the Automation List department...
MicroLogix 1100 fault with 08h code
Originally posted by Steve Van Kley on 22 May, 2008 - 1:20 am
Numerous 08h faults on numerous displaced 1100s
New Replies:
Curt, Wago makes a nice product that can speak ethernet/ip. The 750-841 is programmable and...
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