Posts from...Today, Thursday, October 2, 2014
from the Mechanical department...Initial Torque Required for Gas Turbine
How to calculate the initial torque required by gas turbine
Dear 309Guy, I think you are confusing this jacking with the bearing jacking. its not same. We...
By 309EGuy on 1 October, 2014 - 1:08 pm -
Why do you use a special fixture to jack the turbine at the generator coupling? Are turbine starts...
Dear all Thanks alot for the feedback! CSA thank you very much for your responses. I was away...
from the Forum department...Allen Bradley Micrologix 1400 PLC Communication with Yokogawa DCS
Allen Bradley Micrologix 1400 PLC Communication with Yokogawa DCS
By Curt Wuollet on 1 October, 2014 - 10:52 pm -
AB does a pretty good job of making the answers to those questions available in their documentation...
from the Forum department...Deltav Network
Link two different version of DeltaV
> I am also interested to communicated Deltav version 9.0 & 11.3 Together on same network. ...
from the Forum department...Siemens S5 to ControlLogix Conversion
Translating a Siemens S5 in Statement to Allen-Bradly ControlLogx LAD.
from the Gas Turbine Control department...Rustronic Mk2 Information
Looking for information on Rustronic Mk2 GT controllers
from the twido suite department...PLC timed sequence
is it possible to stop all TON TOFF timers?
from the Forum department...Adding Modbus register values together
How can you add MODBUS registers?
By ICP DAS on 30 September, 2014 - 7:12 pm -
I have a solution in which you will also have a display of the values and the sum. Using our...
from the Cook Rooms department...Controlling Diffrent Cookers Using Same HMI
control different cookers on each others HMI
By cmshelton on 30 September, 2014 - 6:47 pm -
Thanks James Ingraham, I will search more and look into this...
By James Ingraham on 29 September, 2014 - 6:46 pm -
> I was hoping it could be done with the Panel Veiw 1000 plus HMI's we [are] already using. ...
By cmshelton on 26 September, 2014 - 9:46 pm -
Thanks for the replys I was hoping it could be done with the Panel Veiw 1000 plus HMI's we or...
from the Instrumentation department...Load cell output mV linearity
Whether load cell output in mV will linearly increment according to weight added to it?
In case of zero load, the load cell is showing some mV output with supply voltage - whether this...
Ideally, yes, but . . . . A load cell is ratiometric, that is, its output is proportional to the...
from the mechanical department...Flow Divider Problem in GE Frame 9e Turbine
Looking for advice on maintaining flow divider in our GE frame 9e turbine
from the Master Thesis world department...Master Thesis Guidance With Protocols
Trying to decide which communication protocol is better for the API I am designing for my Master Thesis.
By JOhn Bryan on 30 September, 2014 - 10:31 am -
The security/cost of MODBUS is exceptionally inviting for most applications. It is a...
By Lynn August Linse on 29 September, 2014 - 10:29 am -
You could also look through the California Smart Grid initiatives, as they are trying to define...
Thank you all for your responses. I am strongly considering Modbus, because DNP3 seems to be...
By John Correa on 26 September, 2014 - 7:23 pm -
Hi. You must pay attention in the security (cryptography) issues. A large scale data network...
By Harvard on 26 September, 2014 - 12:28 pm -
I can only speak for the last 35 years (20 with the Fisher ROC series) and it has been Modbus all...
By Lynn August Linse on 26 September, 2014 - 10:10 am -
Wow, that's a tall order. Which is better? :-) Really it depends on your market. Modbus is great...
from the Forum department...Open Source PLC Programming Software
I wanted to know what are the best open source PLC Programming software to use
By visitor on 30 September, 2014 - 12:56 am -
> I wanted to know what are the best open source PLC Programming software to use? > I am a...
from the Engineer department...Why Consider Third Party Companies When Retrofitting/Supporting Your Gas Turbine Controls
Why do people who believe that the OEM is the best alternative for off-warranty service & retrofit contracts why?
Simon, Great philosophical question, and I'm going to try to answer each of your points. >...
from the Student advice department...General Questions about MODBUS
A few questions about MODBUS protocol
By Russ Bartels on 29 September, 2014 - 3:14 pm -
> 1. Can Modbus create data groups/classes? Sometimes yes. > 2. Are the data types fixed,...
from the Solar department...Modbus Training Courses
Looking for Modbus training courses
By BMK on 29 September, 2014 - 10:27 am -
Texas Automation Systems which partners with Techstar gives great instruction on Modbus. ...
from the Instrumentation department...Reversing the Range for Level Transmitter While Measuring Level
After calibrating, why we are reversing the range for Level Transmitter while measuring Level?
By Sam on 29 September, 2014 - 3:08 am -
In the old days when we used electronic and pneumatic DP cells we had to swop the HP and LP legs...
By LItto on 28 September, 2014 - 3:07 am -
or you may do one more thing, consider the range from -2500 to 0. that is what we usually do in our...
By Curt Wuollet on 27 September, 2014 - 7:44 pm -
Because your senior engineer told you to:^) Regards cww...
the DP cell is put in reverse to calibration (L side of meter is on bottom tap and H side is on top...
from the Engineering department...Connectivity and Controller Tags for VB.NET 2012 OPC RSLinx
Setting up connectivity for VB.NET 2012 OPC. How do I list the TAGs in my controller?
from the Power Generation department...When Will 88CR start?
GT start up sequence, when will 88CR get started?
Neo, I believe L14HT will be a logic "1" when the shaft speed is above 8.4% speed...
CSA: TNK14HT1 = 8.4 TNK14HT2 = 3.2 1)
L14HT L14H_ZSPD_BP ...
Neo, Whoa! What about L14HT at your site?!?!?! How is L14HT used at your site? What are...
CSA I am grateful to your response. Thank you sincerely. Best regards! Neo...
from the Forum department...MODBUS Break Condition & Checksum
MODBUS RTU using RS485 to RS232 converter connected to RS232 to USB converter to communicate with electric meter using MODBUS Poll.
By CA Connect on 28 September, 2014 - 6:32 pm -
I agree that the fewer converters you have transferring the signal, the better. Connecting one...
from the Electrical & Systems department...Over-speeding of Slave Motor in Rock Conveying System
Rock coveyor is being driven by Master and slave, two motors in load sharing mode. Slave motor is over-speeding when master gets higher loads.
from the E& I department...Governor Control in Speed Control Mode
Islanding problem when grid trips. The case happens only 5 times out of 100, rest everything goes good.
By JFB on 27 September, 2014 - 6:34 pm -
> grid cuts in low voltage & > manually isolating the grid I guess I still don't...
Bhavin/BJM, If you're certain that the boiler can supply sufficient steam to maintain the...
Thanks for reply, I want to add. Steam production is also enough to take the load (As no...
By JFB on 26 September, 2014 - 7:56 pm -
Duh!.. I was not really thinking about the info provided. IF you are connected to a grid with...
By JFB on 26 September, 2014 - 5:13 pm -
from just the information provided, I sounds like you are not increasing your boiler steam...
from the IMD department...Mark-VIe Servers
Functions of Servers provided with Mark-VIe
Dear MJ, The PRIMARY difference between the two HMIs is that the Mark VIe...
from the Engineering design department...RS485 Connnection to DV-6 VE4006P2
Connecting DCS to VFDs on 485 Modbus RTU
Modbus is not plug-and-play even if Emerson's laughable marketing spiel, "Plug your Serial...
from the E& I department...Load Shading System
Looking for detail knowledge on the Load shading system
Thanks for info,...
... or possibly "load sharing"....
Ah, the seldom-used and little-known practice of load shading. You'll probably have better luck...
from the General Engineering department...DCS vs PLC
Advantages of DCS over PLC for Gas turbine control
By FT on 26 September, 2014 - 2:53 pm -
I am in agreement and as a proponent of Allen Bradley systems, the difference is in the planning....
from the Maintenance department...Stability of Generators in Isochronous Mode
Why are two or more engines (gen sets) in Isochronous mode without load sharing make the system unstable?
Erwin, 1) Yes. Load is equivalent to fuel flow-rate (for internal combustion engines; steam for...
from the Instrumentation department...Instrument Control Loop
Maintenance procedure of process control loop.
If the process was previously running normal without hunting or instability, then something has...
from the Forum department...Contactless Card Reader and PLC
How to connect contactless card reader to PLC?
from the Forum department...Emergency Stop Wiring for Multiple Remote ESTOPs
What is the standard to connect multiple remote ESTOPs serially to Estop Monitor Relay
By Roy Matson on 26 September, 2014 - 2:28 am -
I like Bob's answer the best. I have worked on conveyors over half mile in length with all pull...
Toilet Toup'ee, n.:
Any shag carpet that causes the lid to become top-heavy, thus
creating endless annoyance to male users.
-- Rich Hall, "Sniglets"