Posts from...
Today, Wednesday, September 17, 2014
Originally posted by Rushi Shroff on 24 August, 2014 - 2:57 pm
Master of technology in Industrial Automation & Robotics
New Replies:
The first rule of control engineering is that you can't hope to control anything unless you...
That may be due to the preferences of your University. However I do not find it as a mistake....
Topic: Communications systems and equipment.
from the ModbusTCP department...
PROSOFT MVI56-MNET Slave Response Time
Posted by Cris on 17 September, 2014 - 2:27 pm
PROSOFT MVI56-MNET communication response time and performance
Topic: PLCs and related questions.
from the Instrument and Control department...
Siemens S5 CPU 922 Run and Stop LED Do Not Turn ON
Originally posted by Syed Waqar Azeem on 11 September, 2014 - 1:05 am
Run and Stop LED on front of Siemens S5 922 CPU doesn't turn ON on powering of rack. Only BASP LED on front of CPU is turned ON.
New Replies:
The only thing I can think of is that the Rack is faulted. The backup battery may be missing or...
Topic: Human-Machine Interface and SCADA.
from the C&I department...
Mark V Signal Scaling in HMI
Originally posted by VM on 11 September, 2014 - 8:25 am
Exciter signals gain in mark V
New Replies:
VM, Can you please post the relevant lines (rows) from IO.ASG? What happened when you put the...
Can you please refer the exact scaling values?...
Topic: Power generation equipment control.
from the Forum department...
Excitation system
Originally posted by bing on 10 May, 2009 - 12:50 pm
What is an excitation system is and what role it does play in the start up of a prime mover like a gas turbine
New Replies:
The Power Factor is a function of the MVar. If your unit or turbine is connected to the grid,...
Topic: PLCs and related questions.
from the PLC comm error department...
TSX Premium PLC Problem
Originally posted by visitor on 16 September, 2014 - 7:29 am
Telemecanique TSX Premium PLC unstable operation
New Replies:
Thank you very much for your answer. I got contact with local Schneider representatives. They...
This could be programming......hardware....etc. etc. Without being online with the plc when this...
Topic: Power generation equipment control.
from the Wish i paid more attention at University department...
Power Factor on LV/HV Sides of a Transformer
Originally posted by CB on 10 September, 2014 - 10:46 am
how to analyse the power factor of a system across a transformer
New Replies:
Yes i sincerely need a comprehensive calculation on this power factor issue. Thank U very much as i...
Topic: Communications systems and equipment.
from the Forum department...
RSLinx issue in VMWare WIn 7 32 bit VM
Originally posted by Paul on 11 September, 2014 - 11:28 am
I can do a serial upload and download but I cannot go online with RSLogix 500 inside a VM running WIn 7 32 bit
New Replies:
I just got the 2 port version and it works like a champ. Upload, download and online. Thanks! ...
Posted by Psahu on 17 September, 2014 - 10:20 am
Communication not getting established between Yokogawa (ALE-111) and Control logix using Ethernet/IP.
Originally posted by Bill Futch on 12 August, 2014 - 4:08 pm
Starting motor does not cutout when a normal shutdown is given below 60% speed.
New Replies:
Sorry I have been away for so long. I honestly don't think I have had more than 5 minutes in my...
Topic: Power generation equipment control.
from the Power Generation department...
When Will 88CR start?
Originally posted by Neo on 10 September, 2014 - 10:27 am
GT start up sequence, when will 88CR get started?
New Replies:
CSA I would like to begin with L1Z,and i think it is a little hard for me. I will do as much as...
Neo, Can you repeat question/response, please? I don't want to comment on L1X, L1Z until you...
CSA: I am preparing for the L1Z, L1X, l4hr rung. And i think you may miss one of my response. ...
Neo, You don't have to ask--no one does! I wouldn't comment until you posted L1x and L1Z from...
CSA: Can i ask questions about L1X, L1Z and l4hr. I am just wondering whether L1X goes to...
Topic: Sensor technologies.
from the Maintenance department...
Speed sensor problem
Originally posted by Jim on 25 September, 2009 - 7:30 am
Problem found in measures with passive magnetic sensors in a over-speed trip system.
New Replies:
> Have you found out the cause(s) to this problem Jim? We did identify what we feel is the...
Have you found out the cause(s) to this problem Jim?...
Topic: Sensor technologies.
from the seeking product recommendations department...
Modbus TCP temperature monitor
Originally posted by mooseo on 28 February, 2011 - 2:09 am
I'm looking for a product recommendation
New Replies:
See there... http://pcsensor.com/index.php?_a=product&product_id=109 Moderator's...
I am looking for much the same thing, a simple temp and humidity for my server room. I just want...
Topic: Power generation equipment control.
from the Forum department...
Gas Turbine Rachet/Starting Problems
Posted by Alex on 17 September, 2014 - 3:07 am
After trip found SSS clutch calibrated bolts broken
Originally posted by Justin on 3 May, 2012 - 2:38 am
How to use a sigmatel USB IrDa dongle to communicate a Drager Xam 2000 with its CC Vision software for calibration
New Replies:
Search the forums there should be similar problem but solved. Did you update all the necessary...
Hi. I have the same problem with a sigmatel usb-irda dongle and windows XP. Do you get to solve...
Topic: PLCs and related questions.
from the Forum department...
Yokogawa DCS Analog Module AAI143
Originally posted by Ariel on 15 September, 2014 - 2:45 pm
Difference between analog mA value and their correspondent raw value.
New Replies:
Tunning-Raw Value should be
 4 mA    ----> 0%
 6.16 mA ----> 13.5%
 8 mA   ...
Recently there was an unresolved thread involving the same model Yokogawa AI, here ...
Topic: Engineering and workplace issues.
from the Forum department...
DCS analog input problem
Originally posted by mahmoud fawzy on 4 September, 2014 - 7:10 pm
DCS Analog input signals didn't work with ADAM card
New Replies:
Hi David, I got one information form yokogawa training material that last number in AI/AO cards...
Topic: Power generation equipment control.
from the operations department...
AVR Functioning and MVAR control
Originally posted by suryapadhu on 11 September, 2014 - 12:01 pm
AVR Functioning and MVAR control for Gas and Steam turbines
New Replies:
Suryapradhu, Transformer tap changers are available in different configurations, and without...
Topic: Power generation equipment control.
from the CPP department...
Generator Turbine Speed Control
Originally posted by Manoj Baviskar on 10 September, 2014 - 4:10 am
Effect of Reactive load throw off on Turbine (GTG) speed after Generator independent from Grid power.
New Replies:
Manoj, You seem to be providing conflicting information, and you also say, "...Practically,...
Your reply is an eye opener. We will have to seriously start thinking of Isochronous control for...
Manoj, 1) The fuel was not high at the time of isolation--it drifted higher. There are two...
Many Thanks CSA for the prompt reponse, Coming to your question: The turbine-generator (GTG)...
Originally posted by connected on 14 September, 2014 - 2:31 pm
Problem with SCADA system that supervises electrical power flow for a residential building. Connected with Modbus RTU over RS485 daisy-chained 2-wire. The communication on the bus seems to be destroyed with Schneider PM750 connected.
New Replies:
This link shows the shield connection to the PM750: ...
> Where are the terminating resistors and what value? Resistors are placed at the cable ends,...
> It is most likely a grounding issue - that the 2 vendors approached the 'reference signal to...
Two points: 1. RS485, technically speaking, is a 3 wire system, A, B and COMMON. But the...
Some notes: > They are interconnected through daisy-chain 2-wire RS485 The shield and...
By Lynn August Linse on 15 September, 2014 - 9:51 am -
It is most likely a grounding issue - that the 2 vendors approached the 'reference signal to...
Topic: PLCs and related questions.
from the Forum department...
Upgrading Yokogawa CS3000 R3 DCS
Posted by Khalid Ur Rehman on 16 September, 2014 - 12:36 pm
Our existing DCS is only compliant with Windows XP HMI's having Vnet communication. What is the best way to upgrade the system for compliance with Windows-7 and having Vnet/IP communication?
Topic: Information resources, documentation.
from the DCS department...
Emerson Delta V Training
Originally posted by timalg on 16 September, 2014 - 2:31 am
Looking for online training of Delta V Emerson
New Replies:
I am not sure if I am addressing your specific question, but Emerson has an Educational Services...
Topic: Power generation equipment control.
from the gas turbine controls department...
Removing Flow Divider Instrumentation on GE 7EA Turbine
Originally posted by Dan on 14 September, 2014 - 9:37 am
GE 7EA turbine, will removing flow divider instrumentation affect operation on Fuel Gas, Mark IV Startup Lockout?
New Replies:
Dan, It should not. You can easily just determinate the speed pickups from the AIO TB and the...
Topic: Engineering and workplace issues.
from the Calibration department...
Rosemount 3051 Calibration
Originally posted by josh0206 on 22 June, 2014 - 3:39 pm
Rosemount 3051 Calibration
New Replies:
Ok let's get you on the right track. I will give you a detailed explanation on how to setup any dry...
Topic: Power generation equipment control.
from the Maintenance department...
Fluid Variable Speed Drive Hunting
Originally posted by Mohammad Kashif on 13 September, 2014 - 5:03 am
Hunting problem in scoop of Voith Geared Variable Speed Coupling R 18 K 500 M
New Replies:
> if it is pneumatically actuated, you might check for water build up in the instrument air...
Topic: PLCs and related questions.
from the Process Control department...
Proficy Machine Edition 8.0
Posted by Chris IWO on 14 September, 2014 - 10:56 pm
Proficy Machine Edtion 8.0 and 8.5
Topic: Sensor technologies.
from the instrument department...
Gas Chromo readings
Originally posted by duks on 10 September, 2014 - 3:17 pm
Retention time of gas chromo
New Replies:
To the Moderator, In regards to the statement: "Moderator's note: I think...
Topic: Motion control, servos, steppers, etc.
from the Forum department...
Wafers Handling Robotics Arms
Posted by Pele1 on 14 September, 2014 - 8:44 am
Questions about robotics arms and the accuracy requirements in manufacturing
Posted by rbhadani on 14 September, 2014 - 5:39 am
Issue with Communication between Triconex PLC for SOE and Matrikon OPC server using TCM Module
Topic: PLCs and related questions.
from the Forum department...
Voltage Levels in DO Cards of PLC
Originally posted by Mihir Ramkrishna on 12 September, 2014 - 12:45 am
Which DO cards are better from the Reliability perspective - cards 24 VDC or cards that give 110 VAC?
New Replies:
My take is a bit different. DC are the most reliable in most circumstances. Solid state outputs...

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