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Control.com topic...
Engineering
Posted by BrownPaper on 20 April, 2014 - 11:34 am
Difference between throttle pressure and 1st stage pressure
Topic: PLCs and related questions.
from the Urgent department...
Time and Date in Honeywell control builder
Originally posted by Mostafa on 8 April, 2014 - 2:48 pm
How could use time and date in control module?
New Replies:
> but unfortunately i couldn't find variables CEE1.HOUR...... > i have many control module...
thank you so much sir but unfortunately i couldn't find variables CEE1.HOUR...... i have many...
Hi Mostafa, you could get the hour, minute and second variables from the CEE under the...
Topic: Motion control, servos, steppers, etc.
from the Forum department...
Driving a Stepper Motor
Posted by Hans on 18 April, 2014 - 3:40 pm
I am seeking advice on the best methods to effectively control a stepper motor.
Topic: Communications systems and equipment.
from the Forum department...
MODBUS Break Condition & Checksum
Originally posted by Derek on 16 April, 2014 - 12:14 pm
MODBUS RTU using RS485 to RS232 converter connected to RS232 to USB converter to communicate with electric meter using MODBUS Poll.
New Replies:
By Lynn August Linse on 17 April, 2014 - 10:53 am -
Having the RS-485 +/- reverse (or swapped) will usually look like a BREAK condition if blindly...
Maybe try a different converter (or your current setup with another slave). FTDI sells some that...
Topic: Sensor technologies.
from the Instrumentation & Control department...
Liquid gas level measurement
Originally posted by Engineer92 on 27 March, 2014 - 2:52 am
Liquid Gas Level measurement
New Replies:
The instrument to use in a application like this is a DP with capillaries and chemical seals with...
Topic: Software, including programming, OS issues, etc.
from the Computer department...
Serial Communication VB Code
Posted by Jinali on 16 April, 2014 - 4:11 am
Continuous reading of serial input
Topic: Engineering and workplace issues.
from the Level Control department...
Magnetorestrictive Level Transmitter issues
Originally posted by Braindead on 26 March, 2013 - 11:46 pm
Extreme vibration and loss of signal on level transmitters
New Replies:
Hi Mateus, there is only one instrument when you are working offshore on a FPSO or Platform...
Topic: Power generation equipment control.
from the Forum department...
Windmill Alternator
Originally posted by Karsten Rasmussen on 11 April, 2014 - 3:04 pm
Control of windmill alternator load
New Replies:
Karsten Rasmussen... following are two ways to change speed: o control blade-pitch. o control...
Karsten Rasmussen, I think it's going to be pretty difficult to control the speed of a wind mill...
Topic: Continuous process industries, DCS questions.
from the Forum department...
Actuator indication and control
Originally posted by David Sutcliffe on 11 April, 2014 - 10:32 am
How to obtain indication and control from a Rotork actuator
New Replies:
Other types of actuators use two drive signals: - one signal drives the actuator 'open' - the...
please provide actuator model number and application...
Originally posted by Mik on 16 September, 2009 - 6:34 am
Turbo-generator response to changes in the power grid frequency.
New Replies:
Dear All, I am working on Hitachi Gas Turbines and Shin Nippon Steam turbines. There are three...
Dear mik, Droop is a function in the turbine controller to help controlling frequency on the...
Topic: Power generation equipment control.
from the Automation department...
Newbie in SCADA world, need some directions
Posted by Ranier on 10 April, 2014 - 10:17 am
Newbie in Power System Automation, needs direction.
Topic: The Business of Automation and Control
from the Investors department...
New Flow Measurement Method
Originally posted by Abdolazim Hasseli on 9 April, 2014 - 1:09 am
How to find an investor of instruments.
New Replies:
Abdolazim Hasseli... first get a reliable Patent Attorney! Do Not, repeat,...
Topic: Engineering and workplace issues.
from the Engineering department...
Deriving RMS from Vibration Transmiter
Originally posted by shakarami on 6 April, 2014 - 10:03 am
How we can drive the rms vibration from Peak
New Replies:
Shakarami... the reason I suggested that you first derive wave-shape is because there are...
Ali Shakarami, Using my preferred Internet search engine and the search term: "convert...
Shakarami... to determine the RMS value of any signal you must extract its wave-shape for one...
As you know the vibration signal may not completely sinusoidal! how can we drive the RMS value...
Only if if the single is sinusoidal! Phil...
V RMS=0.707*pk ...
Topic: Application Questions and Problems
from the snoozing while computers control. department...
Missing flight 370 is a control issue
Originally posted by MCC on 18 March, 2014 - 7:05 am
Long haul pilots today...program the flight management systems and snooooooooze
New Replies:
SOE Multatuli. Squence of events. 1) Altimeter readings incorrect: ...
AP. Asiana wrote in the filing made public by U.S. accident investigators that the Boeing 777...
Topic: Software, including programming, OS issues, etc.
from the ICE department...
Sliding Mode Control Design in Matlab
Posted by Rajeswari on 4 April, 2014 - 2:48 am
How to use sliding mode control design using matlab m- file?
Topic: Engineering and workplace issues.
from the instrumentation department...
Loop calibration for 2 wire loops
Originally posted by - on 3 April, 2014 - 3:02 am
Loop Calibration for 2 wire loops from calibrator that gives 24VDC loop output power
New Replies:
Can you do a loop calibration? Probably. But you're on your own figuring it out. Kusam...
Topic: Motion control, servos, steppers, etc.
from the Custom Cabling department...
Making extension for Molex P4 connector
Originally posted by flizit on 7 March, 2014 - 3:10 pm
Need to extend supplied cables that connect Adjustable Height Table legs to Controller Box.
New Replies:
flizit, Excellent news! ...
Gave a test cable a go, and the legs work just fine with it. Thanks so much for your help! What...
Topic: Sensor technologies.
from the Instrument department...
ABB Thermocouple Transmitter reading fluctuates
Originally posted by msalem73 on 29 March, 2014 - 6:42 am
Transmitters reading Fluctuating
New Replies:
Okay, You answered some of the questions. Have you checked the thermocouples in the stack to...
first off all i am sorry for writing down transmitter model is ABB TH02. the answer of your...
Topic: Engineering and workplace issues.
from the Proces Control department...
Exe certification
Originally posted by Sumesh on 1 April, 2014 - 3:13 am
Exe certification of a junction box
New Replies:
The best place to ask this question is with the supplier of the equipment, rather than a generic...
Topic: Engineering and workplace issues.
from the Automation List department...
Why is current transformer secondary short circuited?
Originally posted by Anonymous on 6 June, 2007 - 11:47 pm
Why is current transformer secondary short circuited during the operation?
New Replies:
All comments where very helpful. In addition, i think one can also use the transformation formula...
Topic: Engineering and workplace issues.
from the electrical engineering department...
% impedance of power transformer
Originally posted by ramesh on 5 August, 2008 - 1:12 am
Elaborate on % impedance of power transformer.
New Replies:
AT... would you prefer the RoT formula, ignoring impact of X/R ratio and exciting-current, on...
AT... Additional to my previous post: 5) " %X = . . . . . = 10.9503 " (NO!) Your...
Originally posted by hatimnazir on 29 March, 2014 - 7:36 am
Series C IO Module in Honeywell DCS failed
New Replies:
Assuming it isn't something like being baked to death in a panel because the panel's...
Topic: Power generation equipment control.
from the Forum department...
Iron in IP Boiler
Originally posted by dkguerry on 19 April, 2013 - 9:52 am
Iron in IP Boiler
New Replies:
Hi, High iron levels in drum could be the reason of FAC in your riser tubes. LP tubes are more...
check your dearator, if you are not removing the D.O., it will attack iron and cause severe pitting....
What type of water treatment chemicals are you using? Overly aggressive application of scale...
Topic: Engineering and workplace issues.
from the Forum department...
Fan trips on overload after changing motor
Originally posted by giribalaaji on 31 March, 2014 - 12:19 pm
Fan trips on overload after changing 37kw 4pole motor to a 5 KW 2 pole motor.
New Replies:
let me better understand your situation: are trying to increase the fan rpm's? if so by how...
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