Posts from...Today, Friday, July 25, 2014
from the Controls department...Why Minimum Value Gate Used in GT controls?
I have seen this Minimum value gate for controlling GT's and Booster Compressor in couple of CCPP.
Neo, I believe the 33.4% value you are referring to is an upper limit on acceleration...
CSA: I use DEH to refer to steam turbine control. I have one question that is related to this...
fluidflow, Pretty good description; but I would be surprised if FSR actually goes to 33% during...
from the Operation department...Using Synthetic Oil in Gas Generator
Why use synthetic oil in GE LM 2500 gas turbine?
GE, The gas generator of GE LM units is an aircraft engine, and most aircraft engines are built...
from the POWER PLANT department...IGV for DLN Type Without IBH
If a turbine has DLN (Dry Low NOx) combustors, IGV exhaust temperature control is not operator-selectable. Is it always on?
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...
from the Power Generation department...Getting a better understanding of GT control PART 2
Getting a better understanding of GT control PART 2.
Neo, Seems my reply to this post never got posted.... I've been having problems with this...
CSA: It seems that it is hard for a field engineer to enjoy a "trip",and i feel that...
from the Forum department...RS-485 Communications
RS-485 Communications with Standing Waves
I think I have bulletproofed the install now based on many of your recommendations. Thank you...
from the Control Systems department...1oo2 voting for temperature transmitter
1oo2 voting for temperature transmitter
By Sam on 25 July, 2014 - 8:09 am -
http://www.controleng.com/single-article/monitoring-critical-vessel-te mperature/224a1b309e.html ...
By d on 23 July, 2014 - 6:41 pm -
you might consider placement in valve-free connecting pipe, but that depends on a number of...
from the Change in level as temperature change department...Lube oil level
Lube oil level dropping as temperature increases
from the Maintenance department...Problems with air intake and dirty turbine
Air intake filters clean but turbine dirty
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...
from the Mechanical department...Exit Guide vanes of Gas Turbines
Gas turbine exit guide vanes and how to use them
Hello There, Swirl angle is the angle between measured representative exhaust gas...
By Izhar on 23 July, 2014 - 2:59 pm -
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,...
Izhar, The description below presumes your questions refer to a GE-design heavy duty gas...
from the Forum department...Displaying PF525 VFD drive faults via Stratix
PF525 VFD drive faults via Stratix 8000 to be displayed on a HMI.
from the Software smithery department...Ethernet/IP and Python
Need some help on using Python to test Ethernet/IP implementation.
By Mark on 24 July, 2014 - 8:51 pm -
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...
from the From Excitation Department department...EX2000 Fault : ST 717_ _PS AC IN and FL 711_ _MCP SYNC
We have EX2000 with static exciter type which is installed on our Steam Turbine Generator, made by GE.
By jjakubin on 24 July, 2014 - 1:59 pm -
We also have the same error code 717 on our EX2000. We changed the DCFB board but that did not...
from the Forum department...ATEX certified 24VDC fan
Looking for a supplier for a small 24VDC (or 230VAC) Ex-d or Ex-e fan
Hello, EBM-PAPST is a well known manufacturer of fans for use in industrial places. Here is the...
from the Automation List department...cutler-hammer
software for Cutler-Hammer D100
By chris on 24 July, 2014 - 7:32 am -
> There are two small buss fuse in the unit, check them. On which card are the bus fuses?...
from the Forum department...FFL instruction weird behaviour
FFL instruction sometimes doesn't load data into FIFO
from the Forum department...VFD and nominal RPM of motor
Nominal RPM on motor plate lower than can be set in VFD
from the Forum department...Simple model-based control example
By d on 23 July, 2014 - 7:55 am -
Good advice. to the original question, all control is model based. > Just playing with...
By Hans H. Eder on 22 July, 2014 - 11:38 pm -
Just playing with some code will not help you much. The better way is: a) To learn about the...
from the Electrical department...Selection of VCB as per short circuit current
Do we need to replace the VCB of a machine with higher short circuit rating if more machines add parallel at same bus bar.
from the Controls department...GE Gas Turbine IGV angle
What is the logic? GTG is not operating in Temperature Control mode.
Sameh Salama: Glad to receive your reply.But this is out of my capability, lets ask CSA for...
from the CBM department...lube oil level
Which Lube oil tnk level to be used: Absolute or relative
By syed on 22 July, 2014 - 10:07 am -
Sam, great detail you have provide. Thank you very much for the response. This is really...
from the engineering department...Modbus RTU utilities
help needed in finding the software facilitating reading data from the sensors via RS485 into industrial computer and providing it for a SCADA application.
By pvbrowser on 22 July, 2014 - 9:30 am -
On http://pvbrowser.org you can find our open source project....
from the Instrumentation department...analog 4-20mA output transmision
Analyzers analog output signal 4-20mA transmission
By aj on 22 July, 2014 - 6:52 am -
Is it safe to run analog and digital instrument signals in the same mulicore cable? multicore is...
from the Forum department...Understanding Control Specification for Gas Turbine
Please help understanding control specification of GE-design heavy duty gas turbine
CSA, Thank you very much! I'll also prefer ignoring the "extra" maths....
from the Forum department...Communication Error with MODBUS DCS RTU
MODBUS over ethernet connection between yokogawa DCS and abb rtu anr96 has a communication error after several minutes.
from the Forum department...Increase in GT hydralic oil filter DP
Raise in hydraulic oil filter DP and allowable limit for filter dust in GT lube oil.
By ABDI on 22 July, 2014 - 2:02 am -
hi, I can't understand why the increase in dp at filter depending the check valve near the...
from the Power generation department...Generator and Capacitor Bank
Totally stumped by the recent brawl over utility of capacitor bank in power generation.
from the Forum department...S7-1500 CM541 Serial RS232 ASCII help
Point to point Serial RS232 ASCII communication in TIAV13
from the Forum department...Evaporator cooler pumps having problem in GE 7FA
Frequently losing suction by pumps and pump discharge flow switch failing.
By Dustin on 21 July, 2014 - 4:17 pm -
Strainer choking in the sump: Your water should not be dirty enough to clog that strainer except...
from the Forum department...Field-bus Actuator Recommendation
Looking for recommendations for a Field-bus Actuator
from the Maintenance department...Governor Control
Definition of Droop and Isoch
arun, Okay, .... Under your scenario with three gen-sets operating in parallel, one in Isoch...
In Greene, New York, it is illegal to eat peanuts and walk backwards on
the sidewalks when a concert is on.