Posts from...Today, Wednesday, August 27, 2014
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 Automation List department...Control Valve Cycle Measurement
How to measure the control valve cycles?
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 Forum department...Hot Air Dryer Supply / Exhaust Air Handling
Supply and exhaust air handling control method evaluation.
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 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 Instrumentation and Control department...Calculating Pressure Transmitter Range
How can we test Rangeability of Pressure Transmitter?
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...
The term in "FSO" in your spec means (percent) of full scale uncertainty. My selection...
from the Forum department...Customized Control System ExD Enclosure
We have procured a Customized PLC ExD Enclosure.
Check the certificate number of the enclosure as supplied. If it has a suffix -U, this indicates...
from the Forum department...9FA Gas Turbine Water Injection
Water injection service varies greatly for GE gas turbine loads.
CSA, Let me first tell you that I have a mechanical background not I&C. But let me redraft...
Mahmoud Alshimy, Water injection is usually scheduled (calculated) as a function of fuel...
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 Forum department...MODBUS to Lan Convertor
Looking for a MODBUS to Lan convertor.
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...TCP/IP over Ethernet
Is TCP/IP on ethernet better?
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...
By Ken E on 26 August, 2014 - 8:56 am -
This is a very open ended question. As with most things it depends on what you are trying to do....
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...
Our dear CAM, Electric motors are driven by electric generators. Electric motors are devices...
By CAM on 25 August, 2014 - 11:22 pm -
my dear gentlemen, may i ask question, what makes prime mover burden itself? is it current,...
from the Power Generation department...Getting a better understanding of GT control PART 2
Getting a better understanding of GT control PART 2.
By Neo on 26 August, 2014 - 7:06 pm -
CSA I am back, and waiting for your reply:) best regards! Neo...
Neo, Are you back?...
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 -
Dear Mr. John Thanks for your help. Problem occurs at only one TU-Slave card where 11 modules...
By John on 25 August, 2014 - 8:32 pm -
Rather than chase the fuse details, let's go back and very clearly describe the problem. Can you...
from the Education department...Java PID example
I am searching a PID controller example in Java with source code.
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 ...
from the Mechanical department...Exit Guide vanes of Gas Turbines
Gas turbine exit guide vanes and how to use them
By fluidflow on 26 August, 2014 - 11:46 am -
Hello There, Izhar, you did not mentioned about the blade tip clearances. Any increase in it...
from the Forum department...Mark 4 Speedtronics HSAA Card jumper position for SRV, GCV Calibration
What is the position for Mark 4 HSAA card jumper when we want to perform calibration?
All, >> Berg jumper settings for R, S, T computers: > REF2 - Set to "1" to...
> Berg jumper settings for R, S, T computers: REF2 - Set to "1" to calibrate FB...
from the Engineering department...9E Generator Trips on Open Breaker When Under Excitation
trip 9e generator open breaker when underexcitation
bilo7, When a GE-design heavy duty gas turbine equipped with a Speedtronic ("Mark")...
from the Instrumentation department...Installation of Ex-ia Converters in Ex-ia Junction Box
Installing Ex-ia converters in Ex-ia Junction Box instead of EX-d
from the Eurotherm 3504 department...Controller Watch Dog and Output Loop Failure Detection
Challenges with achieving the processor watchdog and output loop failure functionality with Eurotherm 3504.
Thanks for your reply. I am currently working on the design....
from the Data Export department...Exporting Ovation Point Data over a serial link using an OPC Server
Viability of exporting DCS (Ovation) data to a third party over a wireless (serial) link using OPC server.
Dear Sarmad At our CCPP output from DCS is given to AB PLC and through SCADA. we send &...
from the I&C department...Solatron flow computer Corrected volumetric flow
re-configure Solatron 7951 flow computer.
Dear Mr. JMW Thanks for your information yes i am trying to configure via the front panel...
from the electric department...Adding Two 4 -20 ma Signals to Equal One Output Signal
Adding two 4-20 ma signals to equal one 4-20 ma output signal without a PLC
By Curt Wuollet on 25 August, 2014 - 8:16 pm -
Actually, on reflection there is a cheap simple way if the input you are driving is the typical 250...
"I'm willing to sacrifice anything for this cause, even other people's