Posts from...
Today, Wednesday, July 30, 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:
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...
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...
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: Engineering and workplace issues.
from the Instrumentation & Control department...
VFD Pump Control
Posted by raynvd on 30 July, 2014 - 9:03 am
Is VFD pump control faster than pneumatic valve control
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: 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:
Failsafe with regards to control valves implies either you require your process line to close or...
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:
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 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: 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...
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:
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: 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. ...
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...
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, In the case you described, this is a timer block, with a pick-up delay (time delay to...
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: 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:
If you are new to motion, I would advise using whichever product seems to be the most mature.  New...
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...
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...
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: 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 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) ...

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