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Applications
Topic: Application Questions and Problems
from the Right way to do this? department...
Pump Running Indication on Control Circuit
Originally posted by Stumped on 10 October, 2014 - 4:19 pm
How can I properly wire my pump panel to show that when the pump is actually running I get an indicator on my PLC/HMI.
New Replies:
the normal way this is handled is by opening the power to the contactor coil if the CB trips. this...
Topic: Human-Machine Interface and SCADA.
from the automation department...
Fast Alarms Between PLC and HMI
Originally posted by EG on 3 October, 2014 - 3:19 am
How can we make an hmi operator panel detect fast alarms?
New Replies:
Use an alarming sbr in the PLC to time expand.... with Rockwell it would be the TT (timer timing...
Topic: PLCs and related questions.
from the Forum department...
PLCs for Beginners
Originally posted by Mr. James on 6 October, 2014 - 2:37 am
I need to learn how to operate and use PLCs
New Replies:
PLC programming has a lot of Logic involved. I would recommend you to start from there. Start...
I self-taught with a DirectLogic 05 from AutomationDirect. The components are very inexpensive and...
Topic: Communications systems and equipment.
from the Forum department...
Modbus frame size
Originally posted by Bin on 6 August, 2009 - 5:25 am
Can I use the Modbus frame size larger than 256 bytes?
New Replies:
What happen if you request more than 125 registers? will Modbus device send out two response...
Topic: Software, including programming, OS issues, etc.
from the BMS department...
Niagara report
Posted by arun on 7 October, 2014 - 8:41 am
How to have an excel report with Niagara?
Topic: Motion control, servos, steppers, etc.
from the Industrial Automation department...
Modbus TCP/IP
Posted by Mikey on 7 October, 2014 - 5:41 am
Developing Modbus TCP/IP on RX63NB board with DP83620 as PHY layer interface.
Topic: Software, including programming, OS issues, etc.
from the Forum department...
Adding Modbus register values together
Originally posted by David on 20 August, 2014 - 3:07 pm
How can you add MODBUS registers?
New Replies:
I have a solution in which you will also have a display of the values and the sum. Using our...
Topic: Continuous process industries, DCS questions.
from the General Engineering department...
DCS vs PLC
Originally posted by Krishna K. Naidu on 29 June, 2006 - 12:11 am
Advantages of DCS over PLC for Gas turbine control
New Replies:
I am in agreement and as a proponent of Allen Bradley systems, the difference is in the planning....
Topic: Power generation equipment control.
from the Forum department...
Generator Load Sharing Issue
Originally posted by RigMan on 2 September, 2014 - 1:41 pm
High amps on one generator
New Replies:
> I have 3 Waukesha LNG generators that run in parallel, the number running depending on load...
Topic: Software, including programming, OS issues, etc.
from the ESD department...
ProSafe-RS, Is It Online Configurable?
Posted by Abdolazim Hasseli on 24 September, 2014 - 1:45 am
Notes when selecting ProSafe-RS as ESD system.
Topic: Application Questions and Problems
from the Water Treatment department...
Chlorine Pacing for Water Treatment Plants
Originally posted by Don Best on 26 June, 2001 - 7:59 pm
What kind of control strategy is most often used to pace chlorine (Sodium Hypochlorite) at a Water Treatment Facility or Reservoir?
New Replies:
Sorry Bob, correction: Speed = 0-100% Stroke = 0-100% Total residual Chlorine = 0-10mg/L Flow...
Some great replies here. Obviously experienced hands. I would only emphasize a couple of points...
The thing is that you need to decide what your dosage rate per GPH is and work backwards from...
Thank you for this post. It helps me a lot on how to control the pump speed and stroke for sodium...
Topic: Software, including programming, OS issues, etc.
from the Forum department...
Concept 2.6 Compatiblity Issue
Originally posted by Anurag Purohit on 11 September, 2014 - 2:55 am
Running windows 8.1 64bit OS and have a concept 2.6 compatibility issue.
New Replies:
Concept 2.6 is a Win-16 program. It still runs on new Windows OS's but only the 32-bit versions. ...
Sorry for the bad news: Concept is a 16 bit application and has not/will not be qualified on Win...
Topic: Power generation equipment control.
from the Mechanical department...
Exit Guide vanes of Gas Turbines
Originally posted by Izhar on 19 July, 2014 - 4:24 pm
Gas turbine exit guide vanes and how to use them
New Replies:
Hi fluid flow Can you please email me some stuff (presentations/pdfs) regarding cooling and...
Hello fluid flow Yes the turbine clearance may have increased. The turbine is operation with 1-2...
Hello There, Izhar, you did not mentioned about the blade tip clearances. Any increase in it...
Topic: Engineering and workplace issues.
from the Forum department...
GFD Chokes?
Posted by Dinesh on 8 September, 2014 - 1:16 am
What does GFD Chokes mean? Is it related to gas flow calculations?
Posted by Ashwin on 7 September, 2014 - 2:36 am
How to calculate specifications for motor to run conveyor system?
Originally posted by Paul Kraemer on 26 August, 2014 - 2:12 pm
Supply and exhaust air handling control method evaluation.
New Replies:
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...
That differential pressure is the one I would control. Regards cww...
Topic: Programming languages.
from the Education department...
Java PID example
Originally posted by Roberto Carabajal on 26 August, 2014 - 1:50 pm
I am searching a PID controller example in Java with source code.
New Replies:
Google turned up a few things. This one looks interesting: ...
Topic: Application Questions and Problems
from the Automation List department...
Control Valve Cycle Measurement
Originally posted by Gerald Beaudoin on 20 August, 2014 - 8:04 am
How to measure the control valve cycles?
New Replies:
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...
Topic: Software, including programming, OS issues, etc.
from the Forum department...
Siemens Procidia upgrade
Originally posted by Bill K on 26 August, 2014 - 11:23 am
update info? Upgrading from Siemens 3.1 to latest version.
New Replies:
> Can anyone give me a ballpark cost on upgrading from siemens 3.1 to the latest version? ...
Topic: Application Questions and Problems
from the Electrical department...
Defeated Circuit Breaker
Originally posted by Kevin Frechette on 26 August, 2014 - 8:33 am
Is it possible to defeat a circuit breaker?
New Replies:
Just about everything I've seen for decades is "trip free", but it does make one wonder,...
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...
Topic: PLCs and related questions.
from the I&C department...
Fuse Monitor Alarm infi-90 DCS
Originally posted by Ashiq on 21 August, 2014 - 2:08 am
Fuse monitor slave alarm of IMDSI02-NTDI01 DCS Infi90
New Replies:
email sent....
Dear Mr. John Thanks for your help. Problem occurs at only one TU-Slave card where 11 modules...
Rather than chase the fuse details, let's go back and very clearly describe the problem. Can you...
Dear Mr. John Thank you very much for your sharing In our case all contacts are system...
Topic: Local and wide area networking in factory automation.
from the Forum department...
TCP/IP over Ethernet
Originally posted by Tarun on 25 August, 2014 - 1:23 pm
Is TCP/IP on ethernet better?
New Replies:
Basically my application is to host a webserver on a microcontroller to host the data of VFD to a...
This is a very open ended question. As with most things it depends on what you are trying to do....
Topic: Engineering and workplace issues.
from the Instrumentation department...
Installation of Ex-ia Converters in Ex-ia Junction Box
Posted by giorgioCDB on 26 August, 2014 - 11:34 am
Installing Ex-ia converters in Ex-ia Junction Box instead of EX-d
Originally posted by Christian on 25 August, 2014 - 7:59 am
Adding two 4-20 ma signals to equal one 4-20 ma output signal without a PLC
New Replies:
Actually, on reflection there is a cheap simple way if the input you are driving is the typical 250...
The word add is misused here and if I get what you want to do, you will need some sort of...
There are a number of manufacturers that make calculation modules that can add two 4-20 mA signals...
Check out: http://www.status.co.uk/files/Products/121.pdf - This has an 'adder' circuit using...
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