Posts from...
Today, Monday, July 28, 2014
Posted by Asko on 28 July, 2014 - 4:09 pm
Impact of null current shift in proportional electric actuator
Topic: Power generation equipment control.
from the POWER PLANT department...
IGV for DLN Type Without IBH
Originally posted by ABDI on 24 July, 2014 - 1:56 am
If a turbine has DLN (Dry Low NOx) combustors, IGV exhaust temperature control is not operator-selectable. Is it always on?
New Replies:
abdi, As many manufacturers do, they use logic/sequencing in many different applications. ...
abdi, We want to know how you think IGV Exhaust Temperature Control and IBH are related--because...
Hi CSA, If the IGV mode in DLN TYPE frame 9E mark V should not force to IGV off mode, why there...
I want to know what happen in combustion DLN-1 type if the IGV MODE IS OFF AND THE IBH system...
Killz has it almost correct, in that the IGVs are used to control the air flow into the...
I do not understand what do you mean by IGV OFF. When IGV is not moving, you will not be able to...
Topic: Engineering and workplace issues.
from the OPC to CS3000 communication department...
Reading text information from OPC to yokogawa CS3000
Originally posted by ANWESHA on 3 July, 2014 - 4:08 am
Is it possible to read text/string from OPC to CS3000 in some way?
I would like to read a Batch number which is scanned and fed to OPC and display in the graphics of CS3000.
Is that possible?
New Replies:
I believe that the CEntum can be a Modbus Master. If you scan the batch number and write it to a...
By Ernest M Smith on 25 July, 2014 - 2:15 pm -
Are you using the Yokogawa Batch Software? Have you established connection of any other data...
Topic: Power generation equipment control.
from the Change in level as temperature change department...
Lube oil level
Originally posted by Yassar on 25 July, 2014 - 2:55 am
Lube oil level dropping as temperature increases
New Replies:
I did not look at the validity of the information you provided with your concern or considered the...
I'll simplify From your observations, a 200ml of hot oil cools to 150ml. Its volume changes,...
CSA, Thanks for your reply. No, I am not concerned about the leaks and there were no leaks in...
just to clairify a few questions are both machines using the same oil? Is that oil mineral or...
As long as it comes back, why worry? Regards cww...
Yassar, Are you concerned about a leak or leaks? Increased consumption when the oil is hot? Are...
Posted by AS on 28 July, 2014 - 4:01 am
Properties of Torquemotor and piezo based valve positioner. Function of Spool Valve in Valve Positioners.
Topic: Sensor technologies.
from the Forum department...
Re-calibrating Rosemount Transmitters
Originally posted by shep on 25 July, 2014 - 8:52 pm
Re-calibrating Rosemount Transmitters after power is removed?
New Replies:
No only if you do a complete reset on it. The reset will take it back to the factory defaults but a...
Topic: Power generation equipment control.
from the Forum department...
Standby AC power supply for power plant
Posted by masoud on 28 July, 2014 - 2:36 am
Which is a more reliable AC backup power supply UPS or Inverter?
Topic: Engineering and workplace issues.
from the Control Engineering department...
LQR Command and failed stabilization
Posted by Sara khaan on 28 July, 2014 - 2:29 am
Getting errors when using dlqr command for my state space equation
Topic: Power generation equipment control.
from the 9fa department...
9fa Gas Combartment Vent Fan 88vl
Posted by Meganathan S on 28 July, 2014 - 2:14 am
Improper ventilation in gas compartment
Topic: Power generation equipment control.
from the Thermocouple department...
MARK VIe Thermocouples
Originally posted by Yassar on 27 July, 2014 - 1:53 pm
Questions about thermocouples and MARK VIe
New Replies:
Yassar, One of the better manuals produced by GE, the Mark VIe System Guide, GEH-6721, has some...
Topic: PLCs and related questions.
from the Help me! department...
XBT Z945 Wire Pinout Connections
Originally posted by Carlos on 17 June, 2005 - 11:28 pm
I need the pinout configuration of the cable XBTZ945 to communicate the terminal XBTN400 to PC.
New Replies:
Do we have to connect both pin 8 Nd pin 1 to pin 5? > Magelis (RJ45) to PC (9 pin D Female) ...
Topic: Power generation equipment control.
from the Controls department...
Why Minimum Value Gate Used in GT controls?
Originally posted by 4_20 mA on 21 January, 2013 - 10:03 am
I have seen this Minimum value gate for controlling GT's and Booster Compressor in couple of CCPP.
New Replies:
fluidflow, Yes; it's unfortunate that too many plants do not allow interested parties to open...
Sir, I checked it with my instrument department and then came to know that max. FSR achieved...
Neo, I believe the 33.4% value you are referring to is an upper limit on acceleration...
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:
Fluid flow Indeed a very interesting website recommended by you. I have seen some of the...
Hello There, Swirl angle is the angle between measured representative exhaust gas...
Thank you so much for such a wonderful reply. Currently we are not facing high spread problem,...
What to say, CSA has left nothing to add. If I had initialized the answer I would have used,...
Topic: Communications systems and equipment.
from the Forum department...
RS-485 Communications
Originally posted by Bill Dolan on 24 June, 2014 - 1:47 pm
RS-485 Communications with Standing Waves
New Replies:
Some devices just have horribly inefficient firmware or less powerful processors, or very commonly,...
I think I have bulletproofed the install now based on many of your recommendations. Thank you...
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 think it's impossible to satisfy every customer especially those have little knowledge...
CSA > To your comment about my disposition regarding your re-write of long-standing rungs,...
Neo, Seems my reply to this post never got posted.... I've been having problems with this...
Topic: Computers in manufacturing; also hardware discussion.
from the How come? department...
3A Convenience Receptacle
Posted by Russ Miller on 25 July, 2014 - 3:59 pm
3A Convenience receptacle requirement.
Topic: Application Questions and Problems
from the Instrument department...
Adding Process values in Centum CS3000
Originally posted by zeshan ahmed on 30 March, 2014 - 12:56 pm
Tag not found error when adding process values to fcs from cs3000 yokogawa.
New Replies:
By ernest M Smith on 25 July, 2014 - 2:18 pm -
If you are connecting to a value in another controller to a function block you should use an AREA...
Topic: Engineering and workplace issues.
from the Operation department...
Using Synthetic Oil in Gas Generator
Originally posted by GE on 24 July, 2014 - 8:55 am
Why use synthetic oil in GE LM 2500 gas turbine?
New Replies:
GE, The gas generator of GE LM units is an aircraft engine, and most aircraft engines are built...
Topic: Sensor technologies.
from the Control Systems department...
1oo2 voting for temperature transmitter
Originally posted by christine on 23 July, 2014 - 4:30 am
1oo2 voting for temperature transmitter
New Replies:
http://www.controleng.com/single-article/monitoring-critical-vessel-te mperature/224a1b309e.html ...
you might consider placement in valve-free connecting pipe, but that depends on a number of...
Topic: Power generation equipment control.
from the Maintenance department...
Problems with air intake and dirty turbine
Originally posted by Arianna Mambrini on 23 July, 2014 - 4:30 am
Air intake filters clean but turbine dirty
New Replies:
Hello there, Please let us know about the kind of inlet duct and the paint which was applied in...
Arianna, Sounds like the filters are relatively new. When was the turbine last washed before the...
Posted by Raymond Laib on 24 July, 2014 - 9:55 pm
PF525 VFD drive faults via Stratix 8000 to be displayed on a HMI.
Topic: Software, including programming, OS issues, etc.
from the Software smithery department...
Ethernet/IP and Python
Originally posted by Mark Q Norman on 22 November, 2013 - 9:31 am
Need some help on using Python to test Ethernet/IP implementation.
New Replies:
Hello, At: http://www.hmisys.com/downloads/msExcel.zip is an Excel file that shows a...
By Lynn August Linse on 24 July, 2014 - 2:03 pm -
Sure, send an email direct to lynnl at digi.com. I've actually been asked quite a bit lately. I am...
Lynn, I'm working on a simulation software based on python, and I need to be able to read and...
Topic: Power generation equipment control.
from the From Excitation Department department...
EX2000 Fault : ST 717_ _PS AC IN and FL 711_ _MCP SYNC
Originally posted by electricalman on 7 July, 2014 - 3:58 am
We have EX2000 with static exciter type which is installed on our Steam Turbine Generator, made by GE.
New Replies:
We also have the same error code 717 on our EX2000. We changed the DCFB board but that did not...
Topic: Information resources, documentation.
from the Forum department...
ATEX certified 24VDC fan
Originally posted by Daniel on 23 July, 2014 - 1:01 pm
Looking for a supplier for a small 24VDC (or 230VAC) Ex-d or Ex-e fan
New Replies:
Hello, EBM-PAPST is a well known manufacturer of fans for use in industrial places. Here is the...
Topic: PLCs and related questions.
from the Automation List department...
cutler-hammer
Originally posted by leblanc49 on 10 March, 2004 - 5:07 pm
software for Cutler-Hammer D100
New Replies:
> There are two small buss fuse in the unit, check them. On which card are the bus fuses?...
Topic: PLCs and related questions.
from the Forum department...
FFL instruction weird behaviour
Posted by Daniel on 23 July, 2014 - 3:00 pm
FFL instruction sometimes doesn't load data into FIFO
Topic: Motion control, servos, steppers, etc.
from the Forum department...
VFD and nominal RPM of motor
Posted by yazooka on 23 July, 2014 - 8:47 am
Nominal RPM on motor plate lower than can be set in VFD
Topic: Continuous process industries, DCS questions.
from the Forum department...
Simple model-based control example
Originally posted by Rupert on 20 July, 2014 - 2:25 pm
MPC example
New Replies:
Good advice. to the original question, all control is model based. > Just playing with...
Just playing with some code will not help you much. The better way is: a) To learn about the...
Topic: Power generation equipment control.
from the Electrical department...
Selection of VCB as per short circuit current
Posted by Shaheed on 23 July, 2014 - 3:22 am
Do we need to replace the VCB of a machine with higher short circuit rating if more machines add parallel at same bus bar.
Topic: Engineering and workplace issues.
from the Controls department...
GE Gas Turbine IGV angle
Originally posted by BND on 28 June, 2014 - 4:31 am
What is the logic? GTG is not operating in Temperature Control mode.
New Replies:
Sameh Salama: Glad to receive your reply.But this is out of my capability, lets ask CSA for...

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