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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?
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-- Albert Einstein
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No fault occurence on delta corner grounded transformer.
Need explanation of Speedtronics partial load control
New Replies:
By definition, Base Load is full load. Anything less (preselected load, manual setting) is partial...
about hunting of generator
New Replies:
Generators aren't allowed to use weapons, therefore they can't hunt.
Seriously, the prime mover...
By ananymous on 6 November, 2009 - 5:38 am -
Among most Problems, Generator Hunting mainly is due to Governor Mal-Fuction. So check your...
DEHN Blitzductor CT ex(i) or DEHNconnect RK (i) Surge arrestor Selection in Ex(i) loop
Can only read 6 registers from Controlotron 1010 flow meter via Modbus
New Replies:
Yes, If you are experiencing a communication failure and the active light stays on then you will...
By Paco on 5 November, 2009 - 4:26 pm -
FUS1010 Problems with Comm Card for Modbus.
Make sure you have the latest Firmware on the card....
By Angel on 5 November, 2009 - 4:47 am -
Hello everyone,
I have the same problem as the first entry.
I have a 1015N-5M card assembled...
MBA project- Gathering information on what aging automation systems are present in plants and the mechanism to dispose of no longer used parts.
I'd like to pull data from the Telemecanique Zelio Logic Relay.
New Replies:
By chud on 6 November, 2009 - 1:15 am -
If you want to use modbus you must buy a modbus expansion unit to plug on the side of the zelio...
If you need a Modbus and OPCServer converter, check out the FieldServer OPCServer from...
By DanMuller on 5 November, 2009 - 8:47 am -
I would be surprised if you find a freeware server that will do the job. If the one you have is not...
Thanks Wassim for your response,
I regret to inform you that the link you posted is reported as...
what is the range of insulation resistance value expected for 132 KV COPPER POWER CABLE?
New Replies:
By Phil Corso on 5 November, 2009 - 10:04 pm -
Parthipan... the IR range, corrected for 300 mt length, is 40-46 Meg Ohms.
Phil Corso
...
By Phil Corso on 5 November, 2009 - 6:08 pm -
PARTHIPAN... Unfortunately, high-IR values are not an indication of high-dielectric strength, but,...
Thanks for the response Phil,
It is buried under ground from a cable sealing out door gantry...
By Phil Corso on 3 November, 2009 - 10:20 pm -
If you are sure of its age, then please answer the following:
o What is the installation? In...
about temperature control system of mark-iv for frame 6B gas turbine.
Operating the Turbine Generator on Preselected Load
New Replies:
Preselected Load Control is really just a lazy man's way of not having to...
By Walter on 5 November, 2009 - 5:21 am -
Thanks for responding this post.
The question is about the behavior of the generator against big...
What causes the distrubances? Frequency excursions? Fuel supply disruptions? Dirty oil?
...
Modbus and HART protocol connection
New Replies:
By K.Rajasekaran on 5 November, 2009 - 5:12 am -
Pl visit www.renuelectronics.com. You can see the product required. The model is Gwy-800....
why a solid rotor alternator preferred? how the eddy currents are minimized in this case?
what type of JB shall be used for IS & NIS signals?
New Replies:
Yes you can. EEXe can be used for both Zone 1 and Zone 2 application....
common emitter o/p curves
New Replies:
By curt wuollet on 4 November, 2009 - 10:56 pm -
Because, in many cases for many transistors the variation of Ic with VCE can be important. There...
CP333D of ABC11D bus converter is indicating hard ready only.
Serial interface between Allen Bradley's Control Logix and Emerson Ovation DCS
New Replies:
By Alex on 4 November, 2009 - 7:31 pm -
Ann,
Do you have a document that show how this serial or Ethernet communication is done between...
Difference/similarities between no load test and excitation current test for power transformers
New Replies:
By Phil Corso on 4 November, 2009 - 6:20 pm -
Cdymk... following are the answers to your two questions:
o LV voltage is usually more readily...
Can Barriers be used in Hazardous Area?
New Replies:
You didn't say it was Div 1 in your original question so my answer may have been off track. Again I...
Dear Steve,
Thanks for your valuable comments. I will certainly get in touch with the vendors....
By Steve Y on 3 November, 2009 - 2:45 am -
Talk to your barrier supplier to see what certification they have for their barriers. MTL, for whom...
By Y.K.JARIWALA on 3 November, 2009 - 12:08 am -
Where you are installing your panel? Zone 2?
If yes Barriers/isolators are available to be...
We are having 10 third party PLC systems to be connected to DCS. We wanted to use ModBus TCP/IP protocol. For this, OPC server facility is required or the PLCs will act as ModBus TCP/IP Server. Please clarify
New Replies:
By Vinod Kumar KG on 4 November, 2009 - 4:01 am -
Please mention the PLC brand and DCS brand so that we will be able to guide you...
By Wassim Daoud on 3 November, 2009 - 9:53 pm -
OPC won't drive your cost up at all (note the price in the link below). The OPC server for Modbus...
I'm assuming that your 3rd party PLC currently communicate through Serial MODBUS. In that case you...
If your PLCs have Modbus TCP server cards you don't need a OPC server. If your PLCs don't...
By David on 3 November, 2009 - 12:57 pm -
If your DCS talks Modbus TCP as a Modbus master directly (a likely scenario) the DCS can talk...
By Roy Matson on 3 November, 2009 - 12:42 pm -
If your DCS and your PLCs are all capable of communicating in Modbus TCP/IP you shouldn't need a...
In case of differential protection, say for generator, we know that current entering a phase must be equal to current leaving that phase. Now for example, there is a short cct between phase R & y at the point where current is entering the phase, just after
New Replies:
I suppose you are talking about a two-phase short circuit. With a high impedance grounding in the...
Need for an help to choose the best fieldbus in a Generating Power Plant
New Replies:
By James Powell on 3 November, 2009 - 1:19 pm -
Dear Fabrizio,
For comparing FF and PROFIBUS, there is a good white paper on...
for my project title i want to control the position of AC servo motor
Spurious diagnostic alarms from MKV panel
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