Posts from...Today, Wednesday, July 23, 2014
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 Maintenance department...Problems with air intake and dirty turbine
Air intake filters clean but turbine dirty
from the Control Systems department...1oo2 voting for temperature transmitter
1oo2 voting for temperature transmitter
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 Mechanical department...Exit Guide vanes of Gas Turbines
Gas turbine exit guide vanes and how to use them
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 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...
Neo, Already i checked the diesel engine loaded speed which was 2320 rpm and replace the torque...
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...
By Sam on 21 July, 2014 - 6:50 am -
Something to take into consideration is that the pressure at the bottom of a column of liquid will...
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.
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...
Neo, What the heck is a "DEH"?...
By Neo on 19 July, 2014 - 11:30 pm -
Wow, i think it is a good question, and i am also interested. In DEH, we just increase speed...
from the Power Generation department...Getting a better understanding of GT control PART 2
Getting a better understanding of GT control PART 2.
CSA: It seems that it is hard for a field engineer to enjoy a "trip",and i feel that...
Neo, Whenever a field engineer says he or she is going on a "trip of a lifetime" it...
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....
SB, The section you provided seems to be from a very early Mark IV Control Specification. The...
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...
from the serious department...charge accumulator
charge accumulator method
By JFB on 21 July, 2014 - 11:06 am -
I am not familiar with GT's hydraulicss. I can comment on ST's which should have similar design...
MJ, You should be able to find the pressure listed on the Device Summary for the machine. The...
By MJ on 21 July, 2014 - 4:30 am -
Can anybody tell me what should be the nitrogen Pressure in Accumulator for Frame-6 machine. we...
from the industrial department...GE Fanuc rx7i PLC Not Going into Run Mode
PLC goes into halt mode after detecting 'CONTROLLER CPU HARDWARE FAILURE' fault
from the Forum department...Communication between DCS CS 3000 and Allen Bradley FlexLogix 5434
communication between DCS CS 3000 and Allen Bradley platform FlexLogix 5434 using Modbus protocol
Hi Ikhtiander, thank you for your reply, and I apologize for the inconvenience. frankly, I...
from the Forum department...Gas Turbine Negative Lean Lean Mode
Want to know about negative lean lean mode of gas turbine
from the Instrument department...Adding Process values in Centum CS3000
Tag not found error when adding process values to fcs from cs3000 yokogawa.
By zeshan ahmed on 20 July, 2014 - 7:21 am -
sir, kindly explain me about station to station data link transfer..... plzzzzzzzzz sir ...
from the Private department...Field Balancing
High vibration problem on a two shaft gas turbine. Need help on Field Balancing.
By Jhon on 20 July, 2014 - 5:43 am -
Hi; I want to know after 4 run method we got a weight and angle. But the experts says that the...
from the Forum department...Maximun Shutoff Differential in a valve
Significance of Maximum Delta P shut off for valves
By Bruno on 20 July, 2014 - 12:05 am -
Hi all > However, actuator will be designed for 5 barg. This means valve will not >...
By Ray on 19 July, 2014 - 4:13 pm -
It's absolutely true. Best thing to design the Shutdown valve actuator for shut-off pressure as...
from the Engineering department...Flange Adaptor and Isolation for Press Transmitter
Mismatching flange between tank nozzle and transmitter
from the Forum department...Dew Point temperature of Natural Gas
How to calculate the dew point temperature of the Natural Gas?
By d on 19 July, 2014 - 12:07 pm -
Coutesy of CSA: "If you have "a recent natural gas analysis report from a reputable...
Hi CSA, I could able to locate the Superheat requirement details document for Natural gas. it...
from the Automation List department...Comparing PLC and DCS
I am new in the field of automation. Could anybody tell me the difference between PLC and DCS other than I/O handling capacity?
By Cathy on 19 July, 2014 - 4:14 am -
Dear Raza, Can you provide some Input on cost comparison of PLC & DCS. ...
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