Posts from...Today, Thursday, August 28, 2014
from the Forum department...MODBUS to Lan Convertor
Looking for a MODBUS to Lan convertor.
By ICP- Robert on 28 August, 2014 - 7:35 pm -
We have a series of products called our TDS series. Using 2 of these, you can form a serial data...
By Curt Wuollet on 26 August, 2014 - 11:06 pm -
Yes, for 150 meters you could even use spare cat5 pairs with rs485. Regards cww...
It might work. I didn't see any software for configuring it. That type of serial server is...
By Bob Peterson on 26 August, 2014 - 6:18 pm -
You may or may not need another converter at the PLC. I would get a pair of RS232 to RS485...
from the Forum department...GE Frame 7EA Combustion Turbine Starting Motor
Starting motor does not cutout when a normal shutdown is given below 60% speed.
By MIKEVI on 28 August, 2014 - 7:27 pm -
Bill, s orry for the long delay in answering, I do not have a good excuse for you. So your...
from the Forum department...Hot Air Dryer Supply / Exhaust Air Handling
Supply and exhaust air handling control method evaluation.
By Curt Wuollet on 28 August, 2014 - 7:27 pm -
IIRC, the quantity that was changing was the exhaust velocity. You already have your supply plenums...
Thanks for your response Curt. Do you mean that you would control the differential pressure...
thanks for your response Curt, Do you mean that rather than running my Supply Blowers at fixed...
By Curt Wuollet on 26 August, 2014 - 11:02 pm -
That differential pressure is the one I would control. Regards cww...
from the Mark VIe Governor department...Mark VIe Governor control
What are the basics of governor control?
N.V.Q, I would also recommend looking at the manuals provided with the turbine (not the Mark VIe...
By JFB on 28 August, 2014 - 5:05 pm -
> N.V.Q, > Please work with GE There are non OEM training companies that do a good job,...
N.V.Q, Please work with GE to get this information. We have discussed this, basically, in the...
from the Electrical Engineer department...parallel operation of generator
We are having 18MW captive power plant to fulfill requirement of power and steam in company.
Sagar, Hmmmm....My understanding of the definition of a captive power plant is one that is...
from the Investors department...New Flow Measurement Method
How to find an investor of instruments.
By JMW on 28 August, 2014 - 12:48 pm -
> I am on same process of fund raising that A. Hasseli for a different products line. If anyone...
from the I&C department...Solatron flow computer Corrected volumetric flow
re-configure Solatron 7951 flow computer.
By JMW on 28 August, 2014 - 12:18 pm -
Hi, I think the contact details I gave are probably going to get you to them but just in case: ...
from the Education department...Java PID example
I am searching a PID controller example in Java with source code.
By James Ingraham on 28 August, 2014 - 12:11 pm -
Google turned up a few things. This one looks interesting: ...
from the Programming languages department...Shell command in VB 6
Help with the shell command in VB 6
By Max on 28 August, 2014 - 11:34 am -
You are calling a Microsoft Word File not the Microsoft Word Application, it should be like this ...
from the Power Generation department...Getting a better understanding of GT control PART 3
Getting a better understanding of GT control PART 3
from the Instrumentation department...Instrument Control Loop
Maintenance procedure of process control loop.
By Sam on 28 August, 2014 - 7:29 am -
On any live process plant this procedure can be followed directly or be adapted slightly to suit...
from the Forum department...TCP/IP over Ethernet
Is TCP/IP on ethernet better?
What does ethernet port with web server mean? If there is any literature related to that please...
By Curt Wuollet on 26 August, 2014 - 10:56 pm -
I'd just use a $35 raspberry pi with a modbus master running on it You would need to write a web...
By Paul Breneman on 26 August, 2014 - 10:21 pm -
Here is one device that is getting attention in the hobby market: ...
By Steve Myres on 26 August, 2014 - 5:41 pm -
Many PLC's, HMI's, drives, and other automation devices have Ethernet built-in or as an add-on...
By Ken E on 26 August, 2014 - 1:18 pm -
If you are doing that I would get an Ethernet solution that can communicate to your microcontroller...
Basically my application is to host a webserver on a microcontroller to host the data of VFD to a...
from the Automation List department...Control Valve Cycle Measurement
How to measure the control valve cycles?
By Sam on 28 August, 2014 - 4:38 am -
I think you are making things more complicated than it needs to be. I have never heard about...
By Gerald Beaudoin on 27 August, 2014 - 1:43 pm -
Sure would appreciate any points of view on this one..... Cheers Gerald Beaudoin...
from the Instrumentation and Control department...Calculating Pressure Transmitter Range
How can we test Rangeability of Pressure Transmitter?
By Kamaraj on 28 August, 2014 - 4:34 am -
Thanks Mr.David & Thanks for all....
The word 'Turndown' is used in two ways. One use of the word turndown is to define how far a...
By Kamaraj on 27 August, 2014 - 1:14 am -
Dear Mr.David, In your Last Post you wrote that At 7 bar pressure, the reading could be 6.65...
from the Forum department...9FA Gas Turbine Water Injection
Water injection service varies greatly for GE gas turbine loads.
Mahmoud Alshimy, You are 110% correct. I don't understand your query. If water injection is...
CSA, Let me first tell you that I have a mechanical background not I&C. But let me redraft...
from the Power Generation department...Getting a better understanding of GT control PART 2
Getting a better understanding of GT control PART 2.
Neo, This thread is getting very long--and very disorganized.... ...
By Neo on 26 August, 2014 - 7:06 pm -
CSA I am back, and waiting for your reply:) best regards! Neo...
from the Forum department...Customized Control System ExD Enclosure
We have procured a Customized PLC ExD Enclosure.
I have checked but the certificate does not have the the suffix U. The suffix number is 06 ATEX...
Check the certificate number of the enclosure as supplied. If it has a suffix -U, this indicates...
from the Forum department...Siemens Procidia upgrade
update info? Upgrading from Siemens 3.1 to latest version.
By anonymous on 27 August, 2014 - 2:52 pm -
> Can anyone give me a ballpark cost on upgrading from siemens 3.1 to the latest version? ...
from the PLC Control department...PID Control using FB41 for Siemens S7-300 PLC
I am an undergraduate student who is currently trying to program a Siemens S7-300 PLC (CPU 313) for PID control using FB 41. Where can I find more examples and more details on how to use FB41. There is none inside the Siemens PID control manual for the FB41. What are the important parameters that need to be configured?
By Jan Steen Nielsen on 27 August, 2014 - 12:19 pm -
Hello Amir Ovcina (and others) I have made an all-in-one PID-Controller (FB121) and many other...
from the Forum department...Data Acquisition from Siemens S7 317-2-PN/DP PLC
Data Acquisition of measured temperature value (by means of 2 wire RTD) from Siemens S7-317-2-PN/DP PLC to Excel/LabView/Matlab
from the Forum department...Running Analog Signal
I need help with running analog signal alongside some 110 lines
By Walt Boyes on 27 August, 2014 - 12:57 am -
Basically, anybody can do anything they like, and the deity knows how often Išve seen what youšre...
By Curt Wuollet on 26 August, 2014 - 11:14 pm -
For 15 feet the first idea would probably _work_ fine with proper cable. A shield within a shield...
By William Sturm on 26 August, 2014 - 11:09 pm -
It is not considered a good practice to run low voltage signal wires in the same conduit as high...
from the Electrical department...Defeated Circuit Breaker
Is it possible to defeat a circuit breaker?
By Curt Wuollet on 26 August, 2014 - 10:34 pm -
Just about everything I've seen for decades is "trip free", but it does make one wonder,...
By Bob Peterson on 26 August, 2014 - 6:20 pm -
This is common place. The CB is typically trip free so it will trip regardless of whether the...
What kind of circuit breakers are they? In my experience most circuit breakers will have a...
from the Operation support team department...Generators and leading power factor
Leading power factor for backup generators
Our dear CAM, Somehow I forgot to include that electricity is one method of transferring torque...
from the UL Shakedown? department...UL Inspectors
Now that we're on CPAP (UL's naughty list) we are being 'asked' to purchase their training package for better inspection results.
By Bob Peterson on 26 August, 2014 - 6:16 pm -
I have not observed them being especially picky but they do seem to have a different point of...
from the Forum department...Isochronous Load Sharing on Dissimilar Generators
Advantages of isochronous load sharing over iso-droop mode configuration of three generators.
Hello, It all really depends on the capabilities of the governors. Some don't operate so well in...
from the I&C department...Fuse Monitor Alarm infi-90 DCS
Fuse monitor slave alarm of IMDSI02-NTDI01 DCS Infi90
By john on 26 August, 2014 - 1:59 pm -
from the Power Station department...Efficiency of ac generators
When using ac generators in Power Stations, what are the advantages of using " Flux Cutting " types, compared to using " Magnetic Induction " types.
Bert Wank, Great--all of it. But it seems to address Lorentz Force Motors,...
from the Forum department...GE Mark VI/VIe HMI and Software Questions
Specific questions about Mark VI and VIe.
By Demigrog on 26 August, 2014 - 12:40 pm -
Hello, CSA covered a lot of ground, I'll just fill in a few gaps and correct a few details. I...
from the kariayam department...Ladder logic simulator
Ladder logic simulator software portable
By Scott on 26 August, 2014 - 12:07 pm -
Here is one more software simulation option: http://www.cmhsoftware.com/ Constructor ...
from the Data Exchange department...Communication between Cimplicity Scada and ABB AC 800 M PLC
How to get data from an ABB AC800M plc to display in Cimplicity SCADA
You may use ABB OPC Server. Refer the Link ...
The road to hell is paved with good intentions. And littered with