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Control.com topic...
Engineering
Topic: Power generation equipment control.
from the Automation List department...
What makes a generator increase load
Originally posted by kumarash on 10 August, 2008 - 3:49 pm
What makes a generator coupled to a gas turbine increase load when load raise command is issued to Mark V
New Replies:
You are right. I think an easier way to look at it would be through water turbines. here is how: ...
Marcos Gonzales, Few answers... 1. Reverse power isn't bad for the generator--it's bad for...
Hi Few questions... 1.- Why reverse power affects reciprocating engines but not so much gas...
Topic: Continuous process industries, DCS questions.
from the Instrumentation department...
Thermocouple Temperature Drops Suddenly
Originally posted by Litto on 22 September, 2014 - 2:06 am
Unexplained temperature drop while process is running
New Replies:
A drop to 100 is indicative of a short creating a false junction. A drop to zero is indicative...
If you are dealing with 950C as opposed to 950F, it could be a problem with the thermowell or the...
Somewhere between the hot junction and the analog input there's a short circuit in the extension...
Topic: Engineering and workplace issues.
from the No Power Source At the Tank department...
Wanted: Simple and Inexpensive Automated Pump Control System Solution
Originally posted by M Jensen on 4 January, 2012 - 9:10 pm
Looking for a simple and inexpensive pump control system to automatically fill water tank. No power source at the tank. Pump is 700 meters from tank.
New Replies:
I am the original poster and am grateful for all the suggestions, expert advice, and links to...
We are working on such a kit. Our preliminary designs have proved to work at 1.5 miles away with...
Originally posted by Arosha on 21 September, 2014 - 9:55 am
What is the standard to connect multiple remote ESTOPs serially to Estop Monitor Relay
New Replies:
I doubt there is any international standards for such things. The main issue may well be that...
Topic: Software, including programming, OS issues, etc.
from the Forum department...
Sliding Mode Control - MATLAB
Posted by Andrew on 21 September, 2014 - 7:39 am
Need help simulating sliding mode controller using MATLAB/SIMULINK
Posted by Beavis Cleavis on 19 September, 2014 - 1:07 pm
Bus contains isolated and non-isolated slaves. Considerations when connecting everything together?
Topic: Power generation equipment control.
from the Mechanical Engineering department...
Frame 9e Bearing Drawings
Posted by Mk6TA on 18 September, 2014 - 8:31 am
Bearing #1 drawings for a GE Frame 9e are missing.
Topic: Engineering and workplace issues.
from the Forum department...
DCS analog input problem
Originally posted by mahmoud fawzy on 4 September, 2014 - 7:10 pm
DCS Analog input signals didn't work with ADAM card
New Replies:
Mr. Fawzy, That's a very interesting observation. A common for all channels is what allows...
Hi David, I got one information form yokogawa training material that last number in AI/AO cards...
Hi, David >Given the nature of what you've reported thus far, I can't predict > what will...
Given the nature of what you've reported thus far, I can't predict what will happen if you connect...
Hi David , yes, sure yokogawa card model is AAI143-H Analog Input Module (4 to 20 mA,...
The symptoms you're seeing are a classic example of exceeding the common mode limitation of the...
Thank you for reply, our power supply model is MOXA DR-4524 feeds 24 VdC to ADAM card , ...
Originally posted by Rushi Shroff on 24 August, 2014 - 2:57 pm
Master of technology in Industrial Automation & Robotics
New Replies:
That may be due to the preferences of your University. However I do not find it as a mistake....
Originally posted by Justin on 3 May, 2012 - 2:38 am
How to use a sigmatel USB IrDa dongle to communicate a Drager Xam 2000 with its CC Vision software for calibration
New Replies:
Search the forums there should be similar problem but solved. Did you update all the necessary...
Hi. I have the same problem with a sigmatel usb-irda dongle and windows XP. Do you get to solve...
Topic: Engineering and workplace issues.
from the Calibration department...
Rosemount 3051 Calibration
Originally posted by josh0206 on 22 June, 2014 - 3:39 pm
Rosemount 3051 Calibration
New Replies:
Ok let's get you on the right track. I will give you a detailed explanation on how to setup any dry...
Yes. 12-117 in wc....
So if I go through the zero suppression that would be like me rearranging it from 0-105" H20...
Topic: Power generation equipment control.
from the Maintenance department...
Fluid Variable Speed Drive Hunting
Originally posted by Mohammad Kashif on 13 September, 2014 - 5:03 am
Hunting problem in scoop of Voith Geared Variable Speed Coupling R 18 K 500 M
New Replies:
> if it is pneumatically actuated, you might check for water build up in the instrument air...
if it is pneumatically actuated, you might check for water build up in the instrument air line....
Topic: Communications systems and equipment.
from the Forum department...
TDC 3000 Remote Station Hanging
Posted by Jiftim on 12 September, 2014 - 2:15 pm
Remote Honeywell ES-T hangs with the RPS kit. Is it possible to extend the LCN using fiber without using obsolete Honeywell equipment?
Topic: Power generation equipment control.
from the maintenance department...
Different Parameters on Siemens 7SJ6005 Relays
Posted by paru on 12 September, 2014 - 12:34 pm
Why are some of the parameters in new Siemens 7SJ6005 relay missing or different from relay model with the same part number?
Topic: Sensor technologies.
from the instrument department...
Gas Chromo readings
Originally posted by duks on 10 September, 2014 - 3:17 pm
Retention time of gas chromo
New Replies:
the flow volumes in a gc are rather small, so any excess volumes in tubing and valves can result in...
Topic: Continuous process industries, DCS questions.
from the PID Control department...
PID Control In an Elevator
Posted by Blackbird307 on 10 September, 2014 - 12:53 am
How can a PID or PI be used in an application involving elevators with a pulley?
Topic: Continuous process industries, DCS questions.
from the Instrumentation and Control department...
Temperature Transmitter
Originally posted by Kamaraj on 8 September, 2014 - 7:11 am
How can we test a Temperature Transmitter Accuracy?
New Replies:
I presume the first simulation is Prova 123 K T/C output to temp transmitter. It isn't clear...
every tried a dry block calibrator on the tc...
so the Prova 123 has 0.1% of span, the transmitter you are testing 0.3% of span, so you can expect...
Topic: Engineering and workplace issues.
from the Automation List department...
Why 4-20 ma is used in Analog Signals?
Originally posted by sreeraj on 3 June, 2007 - 12:25 pm
Why 4-20 ma is used in Analog Signals?
New Replies:
When I began in the power industry several years back there were two commonly utilized current...
>> Why 4-20 ma is used in Analog Signals? >> How come ISA selected this. Why not...
Topic: Software, including programming, OS issues, etc.
from the Modbus RTU Slave Simulation department...
Modbus RTU 2 slaves simulator
Originally posted by Vlad S. on 5 September, 2014 - 4:02 pm
How to simulate two Modbus RTU Slaves
New Replies:
ModMultiSim (see http://wingpath.co.uk/modbus/modmultisim.php) can simultaneously simulate two (or...
I have a generic inhouse Modslave.EXE application that responds to any Modbus Slave address it...
Topic: Communications systems and equipment.
from the Specification department...
Redundancy of Byte Count and Quantity
Originally posted by Jay on 9 September, 2014 - 4:49 am
Is there a need for both fields "Byte Count" _and_ "Quantity"?
New Replies:
Hello, There are several possibilities. Quantity would normally be the count of data fields...
Topic: Power generation equipment control.
from the Mechanical department...
Exit Guide vanes of Gas Turbines
Originally posted by Izhar on 19 July, 2014 - 4:24 pm
Gas turbine exit guide vanes and how to use them
New Replies:
Hi fluid flow Can you please email me some stuff (presentations/pdfs) regarding cooling and...
Hello fluid flow Yes the turbine clearance may have increased. The turbine is operation with 1-2...
Topic: Engineering and workplace issues.
from the Forum department...
GFD Chokes?
Posted by Dinesh on 8 September, 2014 - 1:16 am
What does GFD Chokes mean? Is it related to gas flow calculations?
Topic: Power generation equipment control.
from the instrumentation and control system department...
gas turbine tripped on "loss of flame"
Originally posted by power plant on 26 July, 2012 - 3:43 am
after a gas turbine started the temperature on turbine compartment and load gear compartment increasing until reach the high temperature alarm, and after that the turbine tripped on " loss of flame"
New Replies:
Is there any leakage from the compressor casing? (i.e. can u hear noise) Is the CPD lower than...
Posted by Ashwin on 7 September, 2014 - 2:36 am
How to calculate specifications for motor to run conveyor system?
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