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Control.com member...
Member Information and Posts by kevinc |
from the Looking for a Rosetta stone department...
Any references on how to read 984 style ladder logic?Just been handed some ProWorx ladder diagrams and trying to figure out what some of the strange blocks mean...
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I thought this to be the case, and indeed I confirmed it with an old hand in Modicon. they are...
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.
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I have used Rockwell's Powerflex drives with the safe-off feature, coupled with the Camco indexer,...
books for I&C engineer
Want some information about floating and grounded power supply systems
Anybody used multiple controllers on a single rack in RSlogix5000, any tips etc..
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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....
weg ac drive tripping on voltage dips
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I don't really think disabling protection is the best strategy. If you are that serious about...
What are the most effective ways to protect the area around an automated machine that is physically large?
info on the blackouts in India
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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...
Why cant use core cable for sensors signals instead of pair cable?
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Tamil, if you are asking why we would use a paired cable (such as a twisted pair) for...
bus bar heating and i need the probable causes for it in order to solve them.
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Just a quick question, are you seeing 550V plant-wide? This is a little alarming, but I have seen...
Will Cloud-based SCADA come?
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With window$ it is necessary to reboot long before there is a speed issue....well, an abnormal loss...
from the Something not to be looking forward to. department...
New Virus Targeting HMI/SCADA Systems?A new virus appears to be directly targeting HMI/SCADA systems.
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Yeah, I was just wondering about the mechanics of the hack. It seems that it would take someone (or...
Suggestions for 2011 - What are some possible steps to avoid virus infections that might cause serious problems in control systems?
When multimeter probes shorted checking of probes in hazardous area or
any other area is spark will generated?
any other area is spark will generated?
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.
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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...
What is the electrical main supply on ships like?
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try starting here:
http://nrotc.unm.edu/ns105/Lesson%2016%20-%20Electrical%20Distribution .ppt...
Discussion about floating auxiliary power supply for PLC I/O versus grounded PS (means -24VDC terminal of PS connected to the grounding bar)
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For those that are still interested in this issue- go to ABs knowledgebase and search for 14088 -...
I'd like to know how to calculate the final total error I'm going to get, knowing detailed spec of a Load cell
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Research the word "uncertainty". This may answer your questions. ...
from the Automation List department...
Grounding (again): VFD and Control cabling differences or similaritiesGrounding shields, Control wiring vs. VFD cables. Why don't the same rules apply in both cases?
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To further add fuel to this thread- take a look at ABs System Design for Control of Electrical...
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).
the same control desk).
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Something that you might try to discourage the practice of hitting the e-stop button is to place an...
Channel Configuration and communication path IP addresses are different.
Numerous 08h faults on numerous displaced 1100s
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Curt,
Wago makes a nice product that can speak ethernet/ip. The 750-841 is programmable and...
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