Posts from...
Today, Sunday, May 20, 2012
Topic: Computers in manufacturing; also hardware discussion.
from the Automation List department...
Printing from Icom DOS software
Originally posted by Jeremy Pollard on 17 May, 2012 - 10:53 am
Printing vertical and horizontal lines using Icom DOS software
New Replies:
By Jeremy Pollard on 20 May, 2012 - 2:36 pm -
Thx all for the replies... Cheers from: Jeremy Pollard, CET The Caring Canuckian! Crisis,...
Originally posted by GRJS on 16 May, 2012 - 12:04 pm
Experiencing low H2 CE purity on a GE 7FH2 generator after a HGPI/MAGIC inspection.
New Replies:
CSA - Thank you for the reply. Based on our low casing purity numbers during our initial run up...
Topic: Engineering and workplace issues.
from the Forum department...
Robust Control Matlab
Posted by Anwesha Chatterjee on 20 May, 2012 - 8:01 am
Attempt to control flexure based feed unit using MATLAB and SIMULINK
Topic: Sensor technologies.
from the Forum department...
Foundation Fieldbus going back to defaults
Originally posted by Fieldbus query on 10 April, 2012 - 10:57 am
Foundation fieldbus positioner going back to factory defaults
New Replies:
I concur with Jonas, never seen this. The instrument supplier is who you need to talk to. Do you...
Never seen this before. Contact the device manufacturer directly. The tag and address are...
Posted by rockwell on 20 May, 2012 - 4:33 am
Looking for a circuit for ac drive which can also run with dc power
Topic: PLCs and related questions.
from the automation department...
communication hangup ABB AC450 controller
Posted by paru on 20 May, 2012 - 2:00 am
communication hangup between Siemens S7 PLC and ABB AC450 controller
Topic: Power generation equipment control.
from the Mech.E department...
boiler feed pump scoop control
Originally posted by Naji on 9 May, 2012 - 8:25 am
What is scoop control for boiler feed pumps?
New Replies:
Very very useful again. Thanks Shailendra !!...
Topic: Power generation equipment control.
from the department of redundancy department...
Interfacing with a GE Mark VI
Originally posted by john on 13 May, 2012 - 8:02 am
What are the best practices in interfacing with a GE Mark VI?
New Replies:
John, I have just seen your post - we have a GE Mk VI interface to our HMI/Historian. If you...
Topic: Continuous process industries, DCS questions.
from the Boxing Helena department...
Aluminum or Stainless Enclosures
Originally posted by DMAR on 18 May, 2012 - 4:52 pm
Advantages, disadvantages of aluminum vs stainless enclosures.
New Replies:
The only reason I can imagine to consider either over a painted mild steel enclosure is if you're...
Aluminum is not as widely suitable as stainless steel is. It does have the advantage of lightweight...
Topic: PLCs and related questions.
from the Automation List department...
Control Logix PLC Redundant Power Supply
Originally posted by Mark Riche on 15 May, 2012 - 8:47 pm
Does anyone have experience with the Allen Bradley Control Logix PLC redundant power supply setup?
New Replies:
This is opinion only so take it for what its worth... the MTBF for power supples is so much greater...
Topic: Engineering and workplace issues.
from the Testing department...
REF Relay
Posted by roy on 19 May, 2012 - 12:48 pm
Please help me for REF Relay calculation.
Topic: Continuous process industries, DCS questions.
from the OSI vs. Aspen department...
OSI Pi versus Aspen Info Plus 21
Originally posted by holger on 6 July, 2010 - 6:22 am
Chemical company with batch processes has to decide if they buy Aspen tech or OSI.
New Replies:
i just stumbled across this page now (May 19, 2012) and know this is a late response. We have...
Originally posted by Peter on 17 May, 2012 - 9:24 pm
Noting the extensive previous post of why we have to pay for PLC programming software (thread ran for seven years!). I'd just like to relate I found some Chinese PLC suppliers that offer their programming software for free!
New Replies:
Hello, Schneider also has free software for Twido PLC. Regards, Andrzej www.modbus.pl...
If it's the same Delta whose PLC's were being sold as Cutler-Hammer and programmed with ELCSoft, I...
Topic: Communications systems and equipment.
from the Forum department...
Data on Phone/Email & capture on modbus
Originally posted by Nikunj on 17 May, 2012 - 4:46 am
I need the data to be taken on modbus and transfered to mobile devices.
New Replies:
Hello, You can use embedded computer like Moxa,MMNET,Mini2440 etc. Sending emails and data is...
Topic: Power generation equipment control.
from the Forum department...
Mark 5 problem
Originally posted by calvein on 28 April, 2012 - 11:29 pm
Diagnostic trip
New Replies:
Okay, sorry for replying so late. To elaborate with the problem, the frame V machine running on...
Topic: Continuous process industries, DCS questions.
from the Applications department...
Non-Nuclear Density Meter For Slurry
Originally posted by Austin Bell on 24 April, 2012 - 2:27 pm
Does anybody know of a non-nuclear continuous in- line density meter for slurry?
New Replies:
nukes are plagued more by mis-management than the licenture issues, that said, you have to...
You might try Cidra Sonatrac. http://www.cidra.com/?q=content/minerals-processing This uses...
Topic: Power generation equipment control.
from the Forum department...
Frequency oscillations due to load control
Originally posted by Dani on 23 October, 2010 - 2:01 pm
Our electrical system becomes unstable when we put generators on load control mode.
New Replies:
Thank you Mr.CSA & others for your detailed explanations. Take care G.Rajesh...
By Namatimangan08 on 19 May, 2012 - 1:40 am -
Questions: 1. What is your selected AGC regulation time step? 4 seconds? 2. What is your...
A droop control is purely proportional in that, if the speed of the machine falls, the power...
Topic: Power generation equipment control.
from the Mechanical department...
"high exhaust spread"
Originally posted by FSX on 18 May, 2012 - 5:48 am
GE Frame V Gas Turbine operating with High Exhaust Spread Problem
New Replies:
Hai FSX, Well, what is value of spread 2 and spread 3? Whether one thermocouple is reading...
Topic: Sensor technologies.
from the Forum department...
Underground water sensor
Originally posted by engineer on 17 May, 2012 - 1:03 am
looking for a underground water level sensor
New Replies:
Hi, where to dig ? Think the right way - where would it be best to have the well ? For...
Topic: Continuous process industries, DCS questions.
from the Plant Engg department...
Motorized Valve control over Wireless
Originally posted by Mohamed on 15 May, 2012 - 3:14 am
Looking for solution to interface few LIMITORQ actuator as part of MOVs to DCS I/O located around 600 meters away from the MOVs.
New Replies:
Hello Bob, We have a total of 52 MOVs out of which 18 are for Utility...
Topic: Communications systems and equipment.
from the Automation department...
Modbus Time delay issue in Daisy Chain Network
Posted by Bala on 19 May, 2012 - 3:37 am
Modbus Time delay issue in Daisy Chain
Topic: Power generation equipment control.
from the Instrument & Control department...
SRV malfunction
Originally posted by Teekay on 14 May, 2012 - 5:17 am
SRV opening and closing on start up and preventing firing of gas turbine unit (GE Nuovo PIgnone 5001)
New Replies:
Hai Teekay, >>When we checked the small hydraulic filter before the GCV & SRV servo...
Topic: PLCs and related questions.
from the automation department...
siemens S7 ROM & RAM
Originally posted by paru on 12 May, 2012 - 2:40 am
Uses of ROM & RAM in Siemens S7
New Replies:
Hi, When you go online with the PLC and before you download, you would be able to see that there...
Topic: Engineering and workplace issues.
from the Forum department...
energy savings w/ AC VFD
Originally posted by stephen on 9 May, 2012 - 2:47 pm
trying to save energy with a VFD on a constant centrifugal fan load.
New Replies:
If the fan requires 20lb/ft to move the volume of air you want, then the motor is providing...
sorry for the delayed responce I read you post & it makes sence. my thought is that my...
Topic: PLCs and related questions.
from the Automation List department...
Re: PLCs: Some sources of free PLC programming software
Originally posted by bob peterson on 18 May, 2012 - 8:05 am
Has anyone had any experience with these sources of free PLC programming software?
New Replies:
By William Sturm on 18 May, 2012 - 4:22 pm -
I wish someone would give A-B some serious competition, they need it IMHO.  The issue for any...
Topic: Continuous process industries, DCS questions.
from the Forum department...
Hot loop for analogous signal
Originally posted by bap291111 on 7 May, 2012 - 12:23 am
Hot loop for analogous signal different from a FF Device?
New Replies:
What is "hot loop"? Are you referring to loop test / loop check? Five point...
Originally posted by igor on 24 March, 2012 - 3:52 pm
differential pressure transmitter (orifice plate) measuring flow with the square root function enabled
New Replies:
Ditija: an RTD simulator has manual input and ohm output to the transmitter input. A TC simulator...
See the calibration tutorial here: http://www.eddl.org/DeviceManagement/Pages/Calibration.aspx ...
Topic: Power generation equipment control.
from the acquisition department...
60/50HZ speed conversation
Posted by Long Island tick on 18 May, 2012 - 11:34 am
What's involved in changing a gas turbine operating speeds fro 60/50HZ?
Topic: Engineering and workplace issues.
from the Oil and Gas department...
Rang Min/Max - Calibration Range
Originally posted by Panch on 17 March, 2012 - 12:23 am
I'm getting confused often that the Rang (Min/Max) and Calibration Range.
New Replies:
See the calibration tutorial here: http://www.eddl.org/DeviceManagement/Pages/Calibration.aspx ...
Topic: Power generation equipment control.
from the Gas turbines department...
Compressor discharge temperature
Originally posted by Harish on 10 May, 2012 - 6:36 am
Is there a way to calculate the compressor discharge temperature of a gas turbine without the use of compressor efficiency?
New Replies:
You can't determine the real discharge temperature without assuming a value of isentropic...

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