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Control.com topic...
Process Control
Posted by Beavis Cleavis on 19 September, 2014 - 1:07 pm
Bus contains isolated and non-isolated slaves. Considerations when connecting everything together?
Topic: Continuous process industries, DCS questions.
from the Forum department...
WDFP QLC Card Download
Posted by Kevin Williams on 18 September, 2014 - 12:27 pm
Problem downloading to QLC card with LC Loader
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:
Mr. Fawzy, That's a very interesting observation. A common for all channels is what allows...
Hi David, I got one information form yokogawa training material that last number in AI/AO cards...
Hi, David >Given the nature of what you've reported thus far, I can't predict > what will...
Given the nature of what you've reported thus far, I can't predict what will happen if you connect...
Hi David , yes, sure yokogawa card model is AAI143-H Analog Input Module (4 to 20 mA,...
The symptoms you're seeing are a classic example of exceeding the common mode limitation of the...
Thank you for reply, our power supply model is MOXA DR-4524 feeds 24 VdC to ADAM card , ...
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: 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:
Yes. 12-117 in wc....
So if I go through the zero suppression that would be like me rearranging it from 0-105" H20...
Topic: Communications systems and equipment.
from the Forum department...
TDC 3000 Remote Station Hanging
Posted by Jiftim on 12 September, 2014 - 2:15 pm
Remote Honeywell ES-T hangs with the RPS kit. Is it possible to extend the LCN using fiber without using obsolete Honeywell equipment?
Topic: Sensor technologies.
from the Instrumentation department...
ABB Flowmeter -Flow Data Is Less
Originally posted by sandeep on 11 September, 2014 - 6:27 am
flow meter data is less compared to other flowmeters
New Replies:
what are the units for the 20 mA value? how long does it take for the 1 meter level change?...
>> "flow meter data is less compared to other flowmeters" >other flowmeters? ...
> 1) Is this a new installation or a new problem with an existing, previously satisfactory...
> "flow meter data is less compared to other flowmeters" other flowmeters? ...
1) Is this a new installation or a new problem with an existing, previously satisfactory...
Topic: Sensor technologies.
from the instrument department...
Level Transmitter on Condensate Drum
Originally posted by rosemount on 10 September, 2014 - 2:20 pm
Erratic reading for level transmitter on condensate drum
New Replies:
You are really not giving much for us to work with so if the assumption I am making is wrong it is...
There's nothing wrong with the transmitter, it's accurately reporting exactly what's happening -...
to address your question with any meaning, you need to furnish the detailed vessel drawings, and...
Topic: Continuous process industries, DCS questions.
from the Forum department...
How To Read an Instrument Loop Diagram
Originally posted by Rama on 10 September, 2014 - 5:57 am
Understanding an instrument loop diagram
New Replies:
you physically inspect the IOP, and walk the planned wire routing. reading is usually not required....
Topic: Continuous process industries, DCS questions.
from the PID Control department...
PID Control In an Elevator
Posted by Blackbird307 on 10 September, 2014 - 12:53 am
How can a PID or PI be used in an application involving elevators with a pulley?
Topic: Continuous process industries, DCS questions.
from the Instrumentation and Control department...
Temperature Transmitter
Originally posted by Kamaraj on 8 September, 2014 - 7:11 am
How can we test a Temperature Transmitter Accuracy?
New Replies:
I presume the first simulation is Prova 123 K T/C output to temp transmitter. It isn't clear...
every tried a dry block calibrator on the tc...
I don't think you'll find a type K thermocouple that's that good over that span anyways. I...
so the Prova 123 has 0.1% of span, the transmitter you are testing 0.3% of span, so you can expect...
Posted by Yayati Sule on 9 September, 2014 - 3:24 pm
Use of Programming languages in Automation.
Topic: Engineering and workplace issues.
from the Automation List department...
Why 4-20 ma is used in Analog Signals?
Originally posted by sreeraj on 3 June, 2007 - 12:25 pm
Why 4-20 ma is used in Analog Signals?
New Replies:
When I began in the power industry several years back there were two commonly utilized current...
>> Why 4-20 ma is used in Analog Signals? >> How come ISA selected this. Why not...
Originally posted by vpsopm on 5 September, 2014 - 1:48 pm
2+1 CC GTs both tripped and Steam Turbine was still synchronised on grid producing 30 MW!
New Replies:
otised makes a great point about decreasing steam temperature....
In my opinion, if both GT's are tripped, the steam turbine should be tripped without even waiting...
vpsopm, Your question can only be answered by the people who are responsible for the operation...
> Even though the steam turbine kept running and synchronized, I am sure it didn't go for long,...
Dear, the steam was going to the ST from both HRSGs there is no aux. blr on line! The thing is...
> Did the operators open the steam turbine generator breaker or did reverse power open the...
vpsopm, You said both GT's were tripped and their diverter dampers were closed and the steam...
Famous last words prior to a destructive overspeed event, "the turbine tripped, but I saw MWs...
vpsopm, This could be one of "those" conditions that was never envisioned by the plant...
Dear, Even though the steam turbine kept running and synchronized, I am sure it didn't go for...
Topic: Continuous process industries, DCS questions.
from the Instrumentation department...
Choke Valve Control
Posted by Sanjeev on 9 September, 2014 - 4:16 am
Choke valve control using 2 pulse outputs from DCS
Topic: Power generation equipment control.
from the Operations department...
9FA Gas Turbine Unloading Rate
Originally posted by Stephen Roche on 6 September, 2014 - 3:17 pm
GE 9FA unloading rate in auto stop sequence for multishaft unit.
New Replies:
Stephen Roche, Based on the signal names (the 'L' suffix at then end of the signal names you...
The combined cycle loading and unloading rates are the same. However, once the steam turbine is...
Thanks for your reply CSA. The Auto loading/unloading rate for our unit is G1:TNKR1_4L and is...
SteveRoche, Unfortunately, GE uses the same Control Constant for unloading as for loading when...
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