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Thermal Overload
The threads that wouldn't die...
- PC reliability?
- Windows, real time
- PID loops
- PCs vs. PLCs
- Replacing people
- MS 'monopoly'?
- Software quality
- Where do we go from here?
- Why pay?
- PC reliability?
- Windows, real time
- PID loops
- PCs vs. PLCs
- Replacing people
- MS 'monopoly'?
- Software quality
- Where do we go from here?
- Why pay?
Fortune
Accordion, n.:
A bagpipe with pleats.
A bagpipe with pleats.
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Posts from...
Saturday, December 22, 2007
Running parallel generators, the generator (always no.1) trips on reverse power.
New Replies:
By CSA on 22 December, 2007 - 4:07 pm -
By CSA on 22 December, 2007 - 4:07 pm -
If you are referring to a reverse power (real power, not reactive power), then your problem is most...
Error: QUANTUM STOP code 0200?
New Replies:
By Bryce Gillan on 22 December, 2007 - 4:06 pm -
By Bryce Gillan on 22 December, 2007 - 4:06 pm -
We had a Quantum CPU 43412 that was frequently going to stop and had to be restated. We found that...
Should a single device use more than one Modbus device ID?
New Replies:
By David on 22 December, 2007 - 4:05 pm -
By David on 22 December, 2007 - 4:05 pm -
I would swear that this situation was addressed here about 3-4 weeks ago. But I failed to find...
Regenerative Drive Test Bench Setup
New Replies:
By scan_plc on 22 December, 2007 - 4:04 pm -
By scan_plc on 22 December, 2007 - 4:04 pm -
Hi B,
The reason for using two different (ABB and AB)dirves is the distribution rights that my...
i am stuck-up using the VIPA PLC (CPU 315sn) that uses a Siemens S7 Protocol...
New Replies:
By Boofh on 22 December, 2007 - 4:03 pm -
By Boofh on 22 December, 2007 - 4:03 pm -
Hi,
The best way is to use the VIPA OPC server (or Siemens OPC server) using the ISO RFC1006 S7...
How does an analog 2 wire loop powered system work?
New Replies:
By Michael Batchelor on 22 December, 2007 - 4:02 pm -
By Michael Batchelor on 22 December, 2007 - 4:02 pm -
This is essentially correct. The transmitter acts a current regulating mechanism. It's...
Turbine tripped on IGV control Trouble Trip
Proportional Gain
New Replies:
By Issac on 22 December, 2007 - 4:00 pm -
By Issac on 22 December, 2007 - 4:00 pm -
Depends on the brand and model, but most do proportional gain to three decimal places so minimum...
Pay scale for starting controls/automation engineers
New Replies:
By Sumudu Priyantha on 22 December, 2007 - 3:59 pm -
By Sumudu Priyantha on 22 December, 2007 - 3:59 pm -
hi
I think your quest is worth one, I am live in small country call Sri Lanka. Here it is only...
I need some information to compare the mostly used bus-based systems such as ASI, Profibus, Fieldbus.
New Replies:
By Jonas Berge on 22 December, 2007 - 3:27 am -
By Jonas Berge on 22 December, 2007 - 3:27 am -
Zare, by your definition, what is the difference between "transmission technique" and...
Looking for information concerning any limits on the amount of back pressure (due to exhaust noise baffling) on a Frame V Gas Turbine.
I'm looking to convert 4-20mA to a digital signal
New Replies:
By NB on 22 December, 2007 - 3:18 am -
By NB on 22 December, 2007 - 3:18 am -
May be useful for you:
http://www.dataforth.com/catalog/doc_generator.asp?doc_id=17
NB...
By Vaishakh Chavan on 22 December, 2007 - 2:46 am - Hi Sandy,
If you understand PLCs then you must be aware that digital impus are contact channel...
Has anyone found a way to automate the DeltaV database cleanup, either the regular or the extended procedure? Also, I am looking for options to backup a DeltaV system.
New Replies:
By Jose Torres on 22 December, 2007 - 3:17 am -
By Jose Torres on 22 December, 2007 - 3:17 am -
Ricardo:
Hello! By chance we saw your question while verifying the market.
We already have...
Which would produce the power most efficiently, an alternator and a DC motor?
New Replies:
By Michael Griffin on 22 December, 2007 - 3:16 am -
By Michael Griffin on 22 December, 2007 - 3:16 am -
The 60% - 80% values are typical for small (100 to 500 watt) motors used in automobiles. In these...
Problem with RSLogix Emulate 5000
I want to get the information about the application of steam to the mass flowmeters.
New Replies:
By Anonymous on 22 December, 2007 - 3:12 am -
By Anonymous on 22 December, 2007 - 3:12 am -
When you are purging steam through MFT, What is
velocity of steam through tube? Is it beyond the
...
How to calculate power in unbalanced load
New Replies:
By Phil Corso, PE on 22 December, 2007 - 3:01 am -
By Phil Corso, PE on 22 December, 2007 - 3:01 am -
Responding to Roy Matson's 21-Dec (00:34) question... yes, you are correct. Averaging is not the...
KTK Thyristor drives FAC 1R
New Replies:
By Gareth Jones on 22 December, 2007 - 3:00 am -
By Gareth Jones on 22 December, 2007 - 3:00 am -
KTK changed their name to Control Techniques in the 1990s. For information visit...
How Many Phases?
New Replies:
By Phil Corso, PE on 22 December, 2007 - 2:59 am -
By Phil Corso, PE on 22 December, 2007 - 2:59 am -
Responding to Roy Matson's 21-Dec (00:43) question:
For a fixed amount of power there is no...
By Dooley, Vince on 22 December, 2007 - 2:55 am - Probably because three is the minimum and therefore the most economic number required to produce a...
By Trevor Ousey on 22 December, 2007 - 2:54 am - G'day Roy,
My first thoughts were that three is the least required to easily get a motor to...
What would be the voltage resolution on an analog input of 16 bit resolution?
New Replies:
By Trevor Ousey on 22 December, 2007 - 2:43 am -
By Trevor Ousey on 22 December, 2007 - 2:43 am -
Hi,
David's answer is correct, but you should check with the manual as some modules just use -10...
DCS built-in sequence of events recorder (SER) vs. stand alone SER
Why I should continue to use fuses? ...
New Replies:
By Phyl on 22 December, 2007 - 2:41 am -
By Phyl on 22 December, 2007 - 2:41 am -
ABB has some UL489 CBs that go down to 0.2A and are DIN rail mountable. See the S200U and S200UP...
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