Posts from...
Today, Tuesday, September 2, 2014
Originally posted by RLovell on 29 August, 2014 - 1:08 pm
My high school students ask when/how/if abstract topics like polynomials, factoring, rational functions are ever actually used in the Real World. I don't know..maybe you do?
New Replies:
Thermocouple linearization is a good example. They are cheap, they are sensitive, they require a...
The behaviour of a car's suspension system - in terms of bounce period and damping - are given by...
Thank you for making me aware of tinyurl....
> I bet people on this forum do all the time (even if they don't realize they > learned the...
shortened URLs for the thermocouple polynomials above Thermocouple polynomials ...
Anything that is non-linear must have a equation that represents it or we cannot find the limits to...
Thermocouples are widely used in industry to measure temperature. In order to control temperature,...
Topic: Power generation equipment control.
from the Electrical department...
Isolated Generator and Droop Governor
Originally posted by gshan on 28 May, 2013 - 6:54 am
Can an isolated generator use droop governor?

New Replies:
Manoj Dubey, Hmmm..... Seems someone didn't like my response. Let's assume the turbine was...
Sir, The answer to the question: Would the generator set (prime mover and generator) trip on...
Sir, from above explanation I have understood that steam or fuel inlet will be constant to...
Topic: PLCs and related questions.
from the Forum department...
Siemens Statement Help
Originally posted by Wade on 29 August, 2014 - 8:54 am
Converting a Siemens S5 program to ladder and need help with a block.
New Replies:
Follow conversion in STEP7 Ladder.
                   
   T36   Q47.1 I62.4  F18.7
...
Topic: Motion control, servos, steppers, etc.
from the Siemens/Schneider/Beckhoff or other?! department...
New to the motion world
Originally posted by raph_rf on 29 July, 2014 - 12:04 am
Hello I have a new project with 11 axes of motion (Servos) and need advice on one of three options.
New Replies:
Hi paolo it's for Pick and place (Handling) machine. We have a 3 axis robot arm (RRR) on a 3...
Topic: Communications systems and equipment.
from the Instrument department...
ALE111 module send failure
Originally posted by Shahzad on 28 September, 2010 - 5:17 pm
Yokogawa ALE111 module communication problem
New Replies:
I have a similar problem. We are using ALE111 Ethernet card with controller ADV10D to communicate...
Topic: Power generation equipment control.
from the Power Generation department...
Getting a better understanding of GT control PART 3
Originally posted by Neo on 28 August, 2014 - 10:48 am
Getting a better understanding of GT control PART 3
New Replies:
CSA: We have dealt with L14HSX before,and it is an aux signal to L14HS. It will keep logic 1...
Neo, L3SFLT
  XVCMIR0S01_A   XVCMIS0S01_A  L14HSX    L94X      ...
   L3SFLT    L86GCVT   L86FPG2LT   L4PSTX4
 ------|/|-------|/|------|/|--------(...
Neo, Thanks for breaking up this thread again. As for not reading signals literally, well,...
Topic: Sensor technologies.
from the Instrumentation Engineers department...
Wet Leg Carried Over Problem in Differential Pressure Transmitters
Originally posted by Shaiq Bashir on 31 August, 2014 - 2:47 am
The seal which is filled in wetleg of DPT, is carried away with pipe fluid.
New Replies:
Why did you use the buffer solutions? The SS impulse lines are very resistive to ammonia corrosion...
Routine refilling of all such wet legs is commonly practiced in such cases....
Topic: Power generation equipment control.
from the Electrical Engineer department...
parallel operation of generator
Originally posted by Sagar on 28 August, 2014 - 11:48 am
We are having 18MW captive power plant to fulfill requirement of power and steam in company.
New Replies:
Sagar, All the generator prime movers do NOT need to be running in the fixed load setpoint. And,...
Because of the vibration in the turbine we have to restrict the load on the TG set. The total...
Sagar, Hmmmm....My understanding of the definition of a captive power plant is one that is...
Topic: Power generation equipment control.
from the Mark VIe Governor department...
Mark VIe Governor control
Originally posted by N.V.Q on 28 August, 2014 - 2:49 am
What are the basics of governor control?
New Replies:
N.V.Q, You say you're accustomed to reading SAMA diagrams; everyone, at some point in their...
Thank you very much for your answer. I am checking now the Turbine control logic software...
N.V.Q, I would also recommend looking at the manuals provided with the turbine (not the Mark VIe...
> N.V.Q, > Please work with GE There are non OEM training companies that do a good job,...
N.V.Q, Please work with GE to get this information. We have discussed this, basically, in the...
Topic: Computers in manufacturing; also hardware discussion.
from the Linux RS485 department...
RS485 2-wire auto - Linux support
Originally posted by Leo on 19 December, 2013 - 3:53 am
RS485 PC hardware with 2-wire auto mode AND full Linux support
New Replies:
You might also try poking around the comedi project and Linux machining sites for cards that have...
Leo: > To date I have got my code talking to my sensors (RS485 modbus RTU) on my Windows...
Hi Leo, Have you considered using a USB port to send the signal to your computer? There's a...
Topic: Communications systems and equipment.
from the wonderware device intigration department...
Communication Between Emerson DeltaV DCS and Wonderware
Posted by hiren on 31 August, 2014 - 7:49 am
Communicating through FSGateway between Emerson DCS DeltaV and Wonderware System platform
Topic: The Business of Automation and Control
from the Investors department...
New Flow Measurement Method
Originally posted by Abdolazim Hasseli on 9 April, 2014 - 1:09 am
How to find an investor of instruments.
New Replies:
What are the usual contract of employment conditions? In the USA any idea, innovation or...
Thank you again. I think what I have to do is to make sure that my idea works perfectly. Then I...
> I am on same process of fund raising that A. Hasseli for a different products line. If anyone...
Topic: Engineering and workplace issues.
from the Help needed department...
Sliding Mode Control
Posted by Andrew on 31 August, 2014 - 12:41 am
Help with Anti-swing Sliding Mode Controller for Gantry Crane
Topic: Power generation equipment control.
from the Power Generation department...
Getting a better understanding of GT control PART 2
Originally posted by Neo on 11 July, 2014 - 10:48 pm
Getting a better understanding of GT control PART 2.
New Replies:
CSA: I opened a new thread for this one is a little long and disorganized. ...
Neo, This thread is getting very long--and very disorganized.... ...
Originally posted by Bill Futch on 12 August, 2014 - 4:08 pm
Starting motor does not cutout when a normal shutdown is given below 60% speed.
New Replies:
Bill Futch, I second everything MIKEVI said; it's not necessary to ramp fuel down before...
Bill, s orry for the long delay in answering, I do not have a good excuse for you. So your...
Topic: Communications systems and equipment.
from the ELECTRICAL PROJECTS department...
Replace RS-485 with Siemens Profibus Cable
Originally posted by JIMMY SALDIVIAS on 14 August, 2014 - 12:24 pm
I am building a Modbus RTU network and am considering replacing RS-485 cable with Siemens Profibus cable. Want to hear from those who have done this.
New Replies:
Hello, apparently this guys are Siemens Distributors for South America: http://bit.ly/1nJZxLH ...
Topic: PLCs and related questions.
from the instrumentation department...
Difference Between IP and MAC Addresses
Originally posted by RAJESH on 29 August, 2014 - 4:17 am
What is the difference between IP address and MAC address?
New Replies:
Google it.........short answer, yes you have both MAC is a hardware address assigned at factory of...
Originally posted by Ali on 20 August, 2014 - 7:30 am
Advantages of isochronous load sharing over iso-droop mode configuration of three generators.
New Replies:
Thanks alot CSA. A great help. Very well explained....
Topic: Local and wide area networking in factory automation.
from the Forum department...
MODBUS to Lan Convertor
Originally posted by danaqu on 26 August, 2014 - 2:53 pm
Looking for a MODBUS to Lan convertor.
New Replies:
We have a series of products called our TDS series. Using 2 of these, you can form a serial data...
Originally posted by Paul Kraemer on 26 August, 2014 - 2:12 pm
Supply and exhaust air handling control method evaluation.
New Replies:
IIRC, the quantity that was changing was the exhaust velocity. You already have your supply plenums...
Thanks for your response Curt. Do you mean that you would control the differential pressure...
Originally posted by Ashiq on 29 May, 2014 - 5:38 am
re-configure Solatron 7951 flow computer.
New Replies:
Hi, I think the contact details I gave are probably going to get you to them but just in case: ...
Topic: Programming languages.
from the Education department...
Java PID example
Originally posted by Roberto Carabajal on 26 August, 2014 - 1:50 pm
I am searching a PID controller example in Java with source code.
New Replies:
Google turned up a few things. This one looks interesting: ...
Topic: Programming languages.
from the Programming languages department...
Shell command in VB 6
Originally posted by D on 28 April, 2004 - 11:00 pm
Help with the shell command in VB 6
New Replies:
You are calling a Microsoft Word File not the Microsoft Word Application, it should be like this ...
Topic: Continuous process industries, DCS questions.
from the Instrumentation department...
Instrument Control Loop
Originally posted by Waqar Ahmed on 26 June, 2014 - 3:18 am
Maintenance procedure of process control loop.
New Replies:
On any live process plant this procedure can be followed directly or be adapted slightly to suit...
Topic: Local and wide area networking in factory automation.
from the Forum department...
TCP/IP over Ethernet
Originally posted by Tarun on 25 August, 2014 - 1:23 pm
Is TCP/IP on ethernet better?
New Replies:
What does ethernet port with web server mean? If there is any literature related to that please...
Topic: Application Questions and Problems
from the Automation List department...
Control Valve Cycle Measurement
Originally posted by Gerald Beaudoin on 20 August, 2014 - 8:04 am
How to measure the control valve cycles?
New Replies:
I think you are making things more complicated than it needs to be. I have never heard about...
Topic: Continuous process industries, DCS questions.
from the Instrumentation and Control department...
Calculating Pressure Transmitter Range
Originally posted by Kamaraj on 21 August, 2014 - 7:42 am
How can we test Rangeability of Pressure Transmitter?
New Replies:
Thanks Mr.David & Thanks for all....
Topic: Power generation equipment control.
from the Forum department...
9FA Gas Turbine Water Injection
Originally posted by Mahmoud Alshimy on 24 August, 2014 - 5:16 am
Water injection service varies greatly for GE gas turbine loads.
New Replies:
Mahmoud Alshimy, You are 110% correct. I don't understand your query. If water injection is...
Topic: Engineering and workplace issues.
from the Forum department...
Customized Control System ExD Enclosure
Originally posted by Rashid on 27 August, 2014 - 12:46 am
We have procured a Customized PLC ExD Enclosure.

New Replies:
I have checked but the certificate does not have the the suffix U. The suffix number is 06 ATEX...
Topic: Software, including programming, OS issues, etc.
from the Forum department...
Siemens Procidia upgrade
Originally posted by Bill K on 26 August, 2014 - 11:23 am
update info? Upgrading from Siemens 3.1 to latest version.
New Replies:
> Can anyone give me a ballpark cost on upgrading from siemens 3.1 to the latest version? ...

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