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- PC reliability?
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- PC reliability?
- Windows, real time
- PID loops
- PCs vs. PLCs
- Replacing people
- MS 'monopoly'?
- Software quality
- Where do we go from here?
- Why pay?
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Posts from...
Friday, September 5, 2008
Terminal colors
New Replies:
By Bruce Durdle on 5 September, 2008 - 10:19 pm -
By Bruce Durdle on 5 September, 2008 - 10:19 pm -
The requirement is to clearly identify IS circuits and elements of circuits. This is commonly done...
By Roy Matson on 5 September, 2008 - 10:12 pm - I don't think it's mandatory to have blue terminals. The chances are, though, the whole junction...
In 210 MW turbogenerator in 6th no. bearing (horizontal) there is an increase in vibration with an increase in VAR required by the generator.
New Replies:
By raj kishor on 5 September, 2008 - 10:18 pm -
By raj kishor on 5 September, 2008 - 10:18 pm -
Thanks for your answer. Let me tell you that the rotor is almost 20 years old and didn't change....
Improving deceleration with encoder feedback?
New Replies:
By Anonymous on 5 September, 2008 - 10:14 pm -
By Anonymous on 5 September, 2008 - 10:14 pm -
Concerning drive speed regulation, I have documents on the control equations for velocity servo...
By Jim Miller on 5 September, 2008 - 8:17 pm - Short Answer: Yes, probably.
Long Answer:
It depends a lot on the controller/drive. As I...
After I convert serial data to ethernet, how do I pull out what I need?
We are going to carry out wiring from live +24VDC system to our PLC system. We are being forced to carry out this operation with out shutdown.
New Replies:
By James Ingraham on 5 September, 2008 - 10:09 pm -
By James Ingraham on 5 September, 2008 - 10:09 pm -
Marc Sinclair, disagreeing with CSA's post:
"...you are responsible for your own...
By Bob Peterson on 5 September, 2008 - 9:16 pm - I would not disagree with that, however, it was not what the OP asked about....
By Tom Chubb on 5 September, 2008 - 9:10 pm - Exactly, I was wondering when someone would come out with that!
If you're working live, no doubt...
By Dave Ferguson on 5 September, 2008 - 1:47 am - It is not the 24V that is dangerous. It is the 24v relay moving a 28 ton piece of equipment because...
By Marc Sinclair on 5 September, 2008 - 1:41 am - Hi,
I think you'll find that Nürnberg put an end to that; you are responsible for your own...
UnityPro XL is running slow, V3.1-SP1.
New Replies:
By ed_private on 5 September, 2008 - 10:09 pm -
By ed_private on 5 September, 2008 - 10:09 pm -
My system is:
Core2 Duo CPU
T7250 @ 2.00GHz
1.99 GHz, 3.49 GB of RAM
I have loaded this...
By chud on 5 September, 2008 - 1:32 am - System requirements -
System: Pentium Processor 1.2 GHz or higher, recommended 2.4 GHz
RAM...
Need to transfer BCD data to PC through the PC parallel port.
I can't seem to get the Unity M340 "Cancel" function to work.
New Replies:
By Sophie Gorisse on 5 September, 2008 - 10:01 pm -
By Sophie Gorisse on 5 September, 2008 - 10:01 pm -
Perhaps, when the frame is into the serial driver, it's too late for the cancel EF or the cancel...
Keltronics k095
New Replies:
By CSA on 5 September, 2008 - 9:58 pm -
By CSA on 5 September, 2008 - 9:58 pm -
http://findarticles.com/p/articles/mi_m0EIN/is_/ai_85914777...
ISA specification sheets
Requesting member feedback for the replacement selection of an existing petrochemical control system "DCS".
New Replies:
By dsiler on 5 September, 2008 - 9:53 pm -
By dsiler on 5 September, 2008 - 9:53 pm -
Hey some new information I thought you might be interested in regarding Delta V. I have a client...
from the Automation List department...
suggest a control scheme for regulating three control valves in AutoProblem: We are not able to run the Furnace in Temperature Auto mode (1200 deg C) & we do not know the control philosophy
New Replies:
By Ron Wensley on 5 September, 2008 - 9:51 pm -
By Ron Wensley on 5 September, 2008 - 9:51 pm -
Another part of the control scheme that is often overlooked when you are transferring from one...
By Rob on 5 September, 2008 - 1:37 am - Well, it sounds like you have two operating modes:
1. Startup when < 700 degrees is a regular...
To calculate the controller gains, once the bandwidth of the loop in known.
Toggling a DIO when an alarm condition is set with out the interaction of the master.
New Replies:
By Roy Matson on 5 September, 2008 - 9:14 pm -
By Roy Matson on 5 September, 2008 - 9:14 pm -
Why would that not be legal?
Just because it's a slave doesn't mean it can't do stand alone...
By Michael Griffin on 5 September, 2008 - 8:06 pm - Some slave devices do automatically turn outputs on or off according to whether an input is within...
Problem with spare MMI communicating with PC
New Replies:
By radstaake on 5 September, 2008 - 9:14 pm -
By radstaake on 5 September, 2008 - 9:14 pm -
Call r.radstaake service lauer netherlands
0031-315-386283...
We have a chamber in the middle of nowhere that has an altitude valve, and we wish to monitor the pressures on the upstream and downstream sides...
New Replies:
By Roy Matson on 5 September, 2008 - 9:12 pm -
By Roy Matson on 5 September, 2008 - 9:12 pm -
Rosemount have a range of transmitters that put out a voltage instead of current for low power...
I want to find a way of getting an alarm on HMI placed in control room whenever a fault/failure occurs on IPSYS01 (the system power module card) in PCU of Elsag Bailey DCS (infi-90)
New Replies:
By King on 5 September, 2008 - 9:10 pm -
By King on 5 September, 2008 - 9:10 pm -
How to see in the HMI and where to see the same?
Please provide the reply with details....
By Glenn on 5 September, 2008 - 1:44 am - There is a Status output on the Power Module Chassis which is to be wired to the NTCL Termination...
Installation of Positive type Flow-Meter
Procedure to take project back-up and procedure to restore required for FISHER PROVOX and EMERSON RS-3 DCSs.
Can any one please help?
Can any one please help?
New Replies:
By Girish on 5 September, 2008 - 9:07 pm -
By Girish on 5 September, 2008 - 9:07 pm -
Hi MIHIR Sir,
Are you talking about N202 and VCM's DCS Systems?
Girish...
By Steve Linehan on 5 September, 2008 - 8:04 pm - These are both Emerson Process Management Systems.
If you go to the Emerson web site and...
from the what does 1Vpp mean? department...
how much is the amplitude of sin/cos encoder of heidenhain ern1387 I design a interface circuit of sin/cos encoder,
but i don't know the amplitude of its output. Do different companies produce this kind of encoder with the same output voltage amplitude?
but i don't know the amplitude of its output. Do different companies produce this kind of encoder with the same output voltage amplitude?
New Replies:
By chinmay pemgirikar on 5 September, 2008 - 9:02 pm -
By chinmay pemgirikar on 5 September, 2008 - 9:02 pm -
Dear JIM,
I'm looking out for Sin/Cos Encoder working principle. Where can I get this? Kindly...
Circuit for humidity sensor for detection of the dryness of rice grains.
New Replies:
By Chris Jennings on 5 September, 2008 - 8:56 pm -
By Chris Jennings on 5 September, 2008 - 8:56 pm -
Do you mean moisture content of the rice or the humidity of the air around the rice?
Most...
Ground Impedance calculation & display on Mark IV Screen of GE Speedtronic.
Does any PLC programming software implement the object-oriented-programming concept of "inheritance"?
New Replies:
By twu026 on 5 September, 2008 - 8:53 pm -
By twu026 on 5 September, 2008 - 8:53 pm -
Object Oriented Programming for PLC is definitely an interesting topic. I have recently moved from...
what happened to it?
New Replies:
By Scott Clark on 5 September, 2008 - 8:51 pm -
By Scott Clark on 5 September, 2008 - 8:51 pm -
>Actually, it's really not that
>innovative. Engineers have been
>creating device...
Require info and Australian dealer if one exists
Where are all the reasonably price sources?
New Replies:
By funmower.com on 5 September, 2008 - 8:43 pm -
By funmower.com on 5 September, 2008 - 8:43 pm -
Hi Folks,
Please let me know if you require any parts in respect to r/c mowers.
I am a sales...
how to configure a msg instruction from slc 5/03 to slc 5/03 over dh 485
New Replies:
By Bob Peterson on 5 September, 2008 - 8:29 pm -
By Bob Peterson on 5 September, 2008 - 8:29 pm -
The help files in RSLogix500 are pretty good for this kind of thing....
When we say that differential protection CTs on star connected transformer winding are connected in delta, does this mean that CT's primary winding is connected in star while its secondary winding is connected in delta?
Modbus TCP/IP data concentrator. Need a device that can receive data from mutliple Modbus TCP/IP slaves, stores them and can act as a MModbus TCP/IP slave for the DCS controller.
New Replies:
By Romulo Rodriguez on 5 September, 2008 - 8:27 pm -
By Romulo Rodriguez on 5 September, 2008 - 8:27 pm -
Take a look at http://www.sixnetio.com
We have used Sixnet concentrators and RTUs for years with...
If we increase time delay for shutdown to 30 secs, fuel changeover valve would change position & there would be no shut down BUT m/c would run on furnace oil without additive dosing for approx. 20 seconds...
New Replies:
By speedtronic on 5 September, 2008 - 8:26 pm -
By speedtronic on 5 September, 2008 - 8:26 pm -
Well, it is not necessary that we will perform this modification. We are still thinking on that.
...
Creating an enmurated state and adding to a user defined display
New Replies:
By CSA on 5 September, 2008 - 8:25 pm -
By CSA on 5 September, 2008 - 8:25 pm -
When we have information, we can be of help. It's likely as thought, a configuration issue, which...
By RichT88 on 5 September, 2008 - 8:16 pm - CSA,
Would it be easier to make a new dynamic display rather than using the Demand Display? I...
By martinc on 5 September, 2008 - 1:35 am - Dear CSA,
I have noted some discrepancies in what I posted, this is due to me copying data...
Delay program will be in Assembly Language. This is to be used for PIC16F84A project (microcontroller).
New Replies:
By Joe Jansen on 5 September, 2008 - 8:22 pm -
By Joe Jansen on 5 September, 2008 - 8:22 pm -
Check out http://www.piclist.com which is a fairly extensive resource for PIC programming.
They...
By Michael Griffin on 5 September, 2008 - 8:13 pm - Have the program run in a loop, figure out how long one loop takes, and count the number of loops....
I've a Symax 400 processor. The CPU battery was low and there was a power cut, so I lost the program...
Why does the machine run with Temp control mode while on base load (GE machine with Mark V control)?
I need to find MKV Studio software...
New Replies:
By powerplantforum.com on 5 September, 2008 - 1:45 am -
By powerplantforum.com on 5 September, 2008 - 1:45 am -
I have a copy of the MKV studio, but for some strange reason, I can only view live digital logic...
Oil Flooded Screw Compressor Discharge Temp Control
data exchanging beetwen plc s5 and wincc
New Replies:
By ali on 5 September, 2008 - 1:39 am -
By ali on 5 September, 2008 - 1:39 am -
Hi. Thanks a lot for your answer.
We are using ethernet network communication (h1 cp143) for...
6900/440 Volt, 1600 KVA transformer testing
New Replies:
By anw on 5 September, 2008 - 1:31 am -
By anw on 5 September, 2008 - 1:31 am -
In a short circuit test, rated voltage is not applied to primary but only that amount of reduced...
we experience the following alarm diagostic alarm on VPRO Z: The solenoid voltage 06 mismatch request state.
New Replies:
By AMAM on 5 September, 2008 - 1:29 am -
By AMAM on 5 September, 2008 - 1:29 am -
Dear CSA,
The first VPRO problem was for simplex system.
But the other problem of the trip of...
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