Posts from...
Today, Friday, August 1, 2014
Topic: Power generation equipment control.
from the POWER GENERATION department...
Testing spark plugs of mark5 control system
Originally posted by SHYAM on 21 December, 2013 - 1:00 pm
What are the logic signals required to force, for testing purposes the spark plugs of frame5 Gas turbine externally when mark5 control system is in shut down condition?
New Replies:
CSA, I have not faced any problem with this alarm, but when I was going through the start up...
Batman, I don't think we know when 30SG-1 changes state, actually. We don't know if it changes...
CSA, I am really amazed by your sheer persistence to offer help to the needy. And after spending...
Batman, 30SG-1 "drives" l30sg1. You should think of it like this:
    ...
CSA, Thank you for the quick reply. I was under the impression that, a) 30SG-1 & l30sg1...
Batman, This is an all-too-common alarm and problem, and may involve ......
CSA, I have a question on ignition excitation logic, but before asking that I will post Mark vie...
Originally posted by any author on 31 July, 2014 - 3:40 am
Gas Turbine power station has tripped on surge protection many times due to grid frequencies variation from 50Hz to 49.2Hz.
New Replies:
any author, The first question is: What does the OEM (Original Equipment Manufacturer:...
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:
By James Ingraham on 31 July, 2014 - 4:48 pm -
From a technical standpoint, I don't think there's anything wrong with the three choices you've...
If you are new to motion, I would advise using whichever product seems to be the most mature.  New...
Topic: PLCs and related questions.
from the Automation List department...
Need a siemens expert
Posted by Curt Wuollet on 31 July, 2014 - 4:33 pm
Can I replace a toasted analog module on a S7-224 without having the program?
Topic: Power generation equipment control.
from the engineering department...
Mark VIe logic block
Originally posted by N.V.Q on 28 July, 2014 - 10:43 pm
Time_Sec block in Mark VIe system.
New Replies:
N.V.Q, Here's a logic diagram for the TIMER_SEC block which might help:
        1    ...
N.V.Q, PULSE block. No Block Help for this block either, eh? Very bad GE. ...
N.V.Q, I refer you to the first response: "When the log_in (logic input) is true (logic...
Dear Sir CSA. One more block of Mark VI need your help. The block name is PLUSE, with two...
Thank you very much for your answer. This is basic block, using many where so understand it is...
N.V.Q, In the case you described, this is a timer block, with a pick-up delay (time delay to...
Topic: Engineering and workplace issues.
from the control systems department...
Orifice Tapping Point
Originally posted by amanemisa on 31 July, 2014 - 4:35 am
Orifice tapping point for additional DP flow transmitter
New Replies:
Depends on the criticality of your emergency criteria. Most operating plants typically require...
Topic: Engineering and workplace issues.
from the electrical, domotics department...
modbus-scada
Originally posted by Remi Van Damme on 2 July, 2014 - 1:15 am
is it possible in a modbus network to have a SCADA system which polls for data from the slaves and another SCADA system which also collects data from the same slaves?
New Replies:
We have 2 solutions for your application. In order to avoid having 2 masters in your PC, you will...
Originally posted by Vishal on 1 August, 2007 - 10:12 am
I have a system which transmits signals in RS 232C format. There is a CONTROL System, which accepts signals in RS485 Modbus Format.

Please share you thoughts as to what needs to be done to interface these to systems.
New Replies:
For a complete solution, you can use our Modbus RTU Utility to read the data using our RS-232 to...
there are lots of vendors who give rs 2323 to 485 convertors. i use MOXA convertor which is a basic...
An old PC and some software will do that. But if it's converting from Modbus ASCII to Modbus RTU...
Hello, Very interesting device: Modbus RTU Serial Gateway I would like to know if it is...
Topic: Engineering and workplace issues.
from the Instrumentation and Control department...
Control Valve Questions
Originally posted by Anil Bathra on 30 July, 2014 - 3:49 am
fail safe position of control valve
New Replies:
Thanx Raymond. But how double acting Piston type control valve will work for fail safe position?...
Failsafe with regards to control valves implies either you require your process line to close or...
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: L63CSHH and L63ETH trips are not listed in trip Display on the HMIs at my site, so they...
CSA: Glad to receive your reply,and i have been waiting for your reply.I thought you are busy...
CSA, Thanks for the appreciation :) But this is nothing as compared to what you're doing for...
SB, Thanks for helping explain. I've been experiencing some problems with posts recently, and I...
______________________________________________________________________ ___ DISCLAIMER: This post...
Topic: Communications systems and equipment.
from the software department...
Read/Write serial port using php
Posted by vasudevan on 31 July, 2014 - 6:22 am
Read/Write from windows serial port using php
Topic: Engineering and workplace issues.
from the Instrumentation & Control department...
VFD Pump Control
Originally posted by raynvd on 30 July, 2014 - 9:03 am
Is VFD pump control faster than pneumatic valve control
New Replies:
I'd seriously doubt it. The VFD is limited in both the speed with which it can increase flow...
Topic: Software, including programming, OS issues, etc.
from the Instrumentation and control department...
Teleperm ME function block
Originally posted by Raymond Mpofu on 16 June, 2014 - 4:44 pm
Meaning of the 'HUPE' Teleperm ME function block in the GET (Graphic Engineering Tool) function diagram
New Replies:
Thanks for the response. In other words, its for audible alarming purposes, but is it only for...
By Alex Olokhtonow on 30 July, 2014 - 8:34 am -
Hello! It's a horn stimulation signal. > Can anyone explain the meaning of the 'HUPE'...
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:
In my experience, these two alarms are tied together. The FL711 is sometimes driven by the fact...
> We also have the same error code 717 on our EX2000. We changed the DCFB board > but that...
Topic: Power generation equipment control.
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:
CSA, Already i checked the diesel engine loaded speed which was 2320 rpm and replace the torque...
Topic: PLCs and related questions.
from the Process Control department...
Genius Bus
Originally posted by Chris IWO on 29 July, 2014 - 2:35 am
Lost of Genius Bus LAN
New Replies:
> What are that likely factors that affect the GE LM 70 30 Genius Bus LAN to drop off? 1....
Topic: Power generation equipment control.
from the Forum department...
Standby AC power supply for power plant
Originally posted by masoud on 28 July, 2014 - 2:36 am
Which is a more reliable AC backup power supply UPS or Inverter?
New Replies:
Switching time is more important after failures of mains supply. so UPS is better solution and...
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:
Hi Anwesha, If your customer uses a data historian (e.g. Exaquantum) you will probably find that...
I believe that the CEntum can be a Modbus Master. If you scan the batch number and write it to a...
Topic: Communications systems and equipment.
from the Department of Redundency Department department...
Using OPC to communicate with GE MKVIe
Originally posted by Brian on 4 June, 2014 - 2:31 pm
I'm trying to find out if anyone is using OPC to talk to a GE MKVIe from an ABB INFI90 DCS System.
New Replies:
Some years ago we developed code to directly communicate with GE Mk VI controllers and this runs on...
Topic: Programming languages.
from the Forum department...
KOYO vs ADC memory type
Originally posted by Eric on 29 July, 2014 - 3:50 pm
KOYO and ADC - what do they stand for?
New Replies:
Koyo R = register I assume I, Q = common input & output nomenclature outside the US. M =...
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:
Actually, I'm not done with this thread. This issue started back in December of...
abdi, There is no written documentation that details what you are looking for. What I know I've...
hi CSA, When you say increased air flow in combustion chamber (change IGV MODE From ON to OFF)...
> IBH is a really bad name for the function it provides--which is to > protect the...
abdi, As many manufacturers do, they use logic/sequencing in many different applications. ...
Originally posted by Neo on 5 May, 2014 - 8:28 am
How to get a better understanding of gas turbine control?
New Replies:
Shimy, Good question, and welcome to the discussion. In the beginning, it was intended that the...
CSA, I am following this interesting discussion few days ago. I would like to join it and ask...
Topic: Power generation equipment control.
from the instrumentation department...
generator hydrogen cooling system
Originally posted by None on 25 February, 2010 - 6:32 am
hydrogen cooling system for GE frame6 generator manual
New Replies:
Hello, Ruiyu Chen, We don't know what kind of turbine-generator you are talking about. My answer...
Hello, I am ruiyu chen. After reading your post, I think you are the one who can help me to get...
Topic: Computers in manufacturing; also hardware discussion.
from the How come? department...
3A Convenience Receptacle
Originally posted by Russ Miller on 25 July, 2014 - 3:59 pm
3A Convenience receptacle requirement.
New Replies:
I suspect the rating of the CB could be based on several things. Could be that UL is driving it...
I don't see how it could be a code limitation. How does the code know it's not for a soldering iron...
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:
Thanks again Curt for your insight....
Topic: Continuous process industries, DCS questions.
from the control department...
Bypass Valve Fail Position
Posted by song on 29 July, 2014 - 1:25 am
What is the moist suitable failure position for turbine bypass valve?
Topic: PLCs and related questions.
from the Automation List department...
DOX5 and DOX10 for SattCon
Originally posted by Anonymous on 22 April, 2007 - 8:45 pm
DOX5 and DOX10 for SattCon
New Replies:
was wondering if someone can help me regarding an issue with a SATTCON 05 slimlime PLC that was...
Topic: Power generation equipment control.
from the 9fa department...
Re: 9fa Gas Compartment Vent Fan 88vl
Originally posted by Meganathan S on 28 July, 2014 - 2:14 am
Improper ventilation in gas compartment
New Replies:
Meganathan S, The turbine and auxiliary packager (GE or BHEL or ???) should have provided a...
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 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...

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