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Control.com topic...
Engineering
Topic: Power generation equipment control.
from the operation department...
hydraulic filter
Originally posted by P.P.Salim on 18 May, 2013 - 4:01 am
How to change over Hydraulic oil filter in frame6B GE gas turbine, while the Gas turbine is in service.
New Replies:
Bob Johnston, I have seen some non-GE packaged units which did not have transfer fill valves,...
Check your P & ID for details. 1)open the fill valve and allow stand-by filter to be full...
Topic: Power generation equipment control.
from the control department...
GT FSR for warm up the turbine
Originally posted by Ahmed on 31 January, 2013 - 12:32 pm
FSR fuel reference - margin of FSR warm up
New Replies:
MWO, I don't have a copy of Toolbox or a .m6b file for a gas turbine to review. To be specific,...
Unfortunately the next opportunity will be in a year so I am trying to compile notes and make a...
MWO, Certainly a diesel starting means which is not being controlled correctly could be the cause...
CSA, I appreciate the reply. There is a general feeling among the operators and mechanical...
MWO, There are a couple of different versions of FSRMIN and the "programming" used to...
We installed a Frame 6B GT in 1988 and in 2004 we upgraded our Mark IV to a Mark VI. After that...
Originally posted by Fyzal on 16 May, 2013 - 6:53 am
Low output after smoke coming out from the extraction pipe from bearing #2
New Replies:
Fyzal, Lube oil header temperature is quite higher, I think that it should be in 50~55C, try to...
Fyzal, If this is a problem with some kind of L.O. leak in the #2 Brg. area (which is what I...
At the moment, we are planning to check the extraction pipes for the sealing air, which taken...
Hi CSA, Smoke is seen from the venting pipe since from Full Speed no load, and getting worse...
Fyzal, If I recall correctly some Frame 9E machines also had a strainer/separator underneath the...
Fyzal, How long was "smoke" seen coming from the vent pipe? Is there any idea how...
Dear Fayzl Do mention the Lube oil header pressure and temperature vibration siesmec as well as...
Originally posted by Ben on 16 May, 2013 - 5:32 pm
Several steps of external resistance used for speed control on motor appear to have uneven amounts of resistance. Is this possible? What will the effect on the motor be?
New Replies:
Phil, Again appreciate your valued comments. It's people like yourself that keep the world...
Ben... this sort of problem can be solved using Symmetrical Components Analysis! Say the...
Phil, Really appreciate your response. Unfortunately all i've got is a really poor wiring /...
Ben... please provide operating data: a) Line-currents. b) Supply phase-phase voltages. c)...
Topic: PLCs and related questions.
from the Forum department...
Why 250mA fuse for 4-20mA analog input?
Originally posted by Mohamad Ashour on 9 May, 2013 - 5:31 pm
Why 250mA fuse for 4-20mA analog input?
New Replies:
25V / 250 ohms = 100 mA, so a 250 mA fuse is not going to do this job - 50 mA might....
I suspect that a fuse installed in a 4-20mA loop is an attempt to protect an analog input on a 2...
No I am sure it is 250mA fuse for each 4-20mA input and not the 250ohm resistor....
I am sure it is 250mA for each 4-20mA input. ...
Hi, Could it be 250ohm resistance? If it is, the purpose would be to convert to 1-5VDC from...
Are you sure about 250mA fuse is in line with 4 ~ 20mA signal or you have a module which has no of...
Interesting topic, we too eager to know. Take care G.Rajesh...
Topic: Power generation equipment control.
from the Operations Department department...
Mark VI IONet N-Tron Network switch failures
Originally posted by D.V on 2 November, 2011 - 6:24 am
Mark VI IONet N-Tron Network switches keep on failing, RCA needed
New Replies:
Sagir, Is it possible that the Rev. C switch failures have caused some problem(s) with the 28 VDC...
We too are facing a lot of failures in N-tron switches (516/508 Fx and tx). After an RCA by N-tron,...
Topic: Power generation equipment control.
from the Instrumentation department...
CEMS In-situ analyser
Originally posted by J. Bhattacharya on 14 May, 2013 - 8:24 am
Problems with in-situ CEMS analysers
New Replies:
What is the make of CEMS. I had faced the same problem and we have shifted the analyser at 16 mtr....
Posted by Jhon on 17 May, 2013 - 2:00 am
What is the critical speed of Centaur 40?
Topic: PLCs and related questions.
from the DCS Interface department...
Ovation Serial Interface to Control Logix
Originally posted by Ann Roberts on 14 May, 2009 - 3:33 pm
Serial interface between Allen Bradley's Control Logix and Emerson Ovation DCS
New Replies:
Ann, how about the Nexus1250 its provided with RS485 communication port that could support A...
Topic: Continuous process industries, DCS questions.
from the Forum department...
Connecting level switch
Originally posted by Junior on 15 May, 2013 - 5:42 pm
When is the point when I connect the liquid level control?
New Replies:
If the pump is centrifugal pump, than stopping it would not stop the flow. You have to close the...
Topic: Engineering and workplace issues.
from the Forum department...
Implementing PID Controller with C++
Originally posted by tvlas on 6 March, 2013 - 3:28 am
Question about how a PID Controller might be implemented in C++. How to go from continuous to discrete signal in C++?
New Replies:
> Here is our implementation for closed loop controllers in C++: Yeah,I concur that are truly...
Topic: Motion control, servos, steppers, etc.
from the How is independent control possible department...
Torque and speed control in BLDC motors
Originally posted by Sadiq Mohamed on 17 June, 2010 - 7:55 am
I want to know the details of a speed control for a BLDC motors. I want to know the relation between the torque variation during speed control.
New Replies:
Hello all, In your situation is very useful to search the information provided by PIC's...
Topic: Engineering and workplace issues.
from the Automation department...
AC Voltage Drop Calculation in Cable
Originally posted by TPS on 12 May, 2013 - 12:36 am
Want to calculate the total voltage drop in a 600 meter long cable carrying 150A
New Replies:
By Gerald Beaudoin on 15 May, 2013 - 12:59 pm -
I agree entirely with the suggestion to use transformers at both ends of the run and use a higher...
To answer your question a little better - If you ignore reactance and do the calculation with...
I assumed the "R" was resistance. Turns out it's a resistance factor, per the NEC code....
Thank you so much for the replies. Just wanted to know if there is any specific reason for ignoring...
Topic: Engineering and workplace issues.
from the controls department...
Bently Nevada Vibration Monitor Question
Originally posted by austin on 24 May, 2008 - 10:35 am
wideband vibration alarm...
New Replies:
I assume you have a Bently 86517 accelerometer interface module. If so, Bently manual # 83301-01...
Topic: PLCs and related questions.
from the Automation and control department...
AI module burns while thundering
Originally posted by EPD on 14 May, 2013 - 7:30 am
Only one Analog input module (Model no-6ES7 331-7KF02-0AB0, Siemens) is frequently burning during thundering.
New Replies:
Thank you very much for your answer. Now replying answer of the question. 1. Yes, there are 04...
Hi experts, I like to join with you in this nice discussion. The guy (who posted this thread)...
> Analog input module (Model no-6ES7 331-7KF02-0AB0, Siemens) is frequently > burning during...
Topic: Engineering and workplace issues.
from the IMD department...
what is floating earth system?
Originally posted by Mehul on 5 May, 2007 - 8:29 pm
What is floating earth system? Why it is being used for the MarkIV and MarkV system?
New Replies:
Yes I agree with the given fact above. but Floating Electrical earthing system is were there is 3...
Originally posted by raj on 11 May, 2013 - 3:08 am
guidance towards joining automation industries as a fresher
New Replies:
raj, Even i am a fresher and have the same doubt but did not take time to make a post like...
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