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Posts from...
Wednesday, November 21, 2007
from the Automation List department...
Govenor controller of Turbine-Generator
Topic: PLCs and related questions.
Originally posted by Mohammad samie on 21 November, 2007 - 12:27 pm
How to adjust parameters of a govenor speed controller for parallel turbin-generators,
New Replies:
By CSA on 21 November, 2007 - 3:53 pm -
Can you please explain us how you operate the turbinE-generators? If they are operated to supply an...
from the Automation List department...
OPC server for Yokagawa WT1600
Topic: Software, including programming, OS issues, etc.
Originally posted by Bob Peterson on 3 August, 2007 - 12:50 pm
Anyone aware of an OPC server for this product?
New Replies:
By Fred Loveless on 21 November, 2007 - 3:51 pm -
Yokogawa has developed several Profiles for Kepware's UCON(User Configurable Driver) that the...
By Bob Peterson on 21 November, 2007 - 12:32 pm -
they have one but it prevents you fom using wtviewer and only updates once a second....
By Dave MH on 21 November, 2007 - 12:30 pm -
There are products available that allow you to develop your own OPC server that don't require a lot...
from the Automation List department...
Hydraulic valves
Topic: Engineering and workplace issues.
Originally posted by instruguy on 17 November, 2007 - 1:51 am
Hydraulic Vs. Pneumatic valves
New Replies:
By instruguy on 21 November, 2007 - 3:51 pm -
Hi Roy Thanks a lot....
from the Automation List department...
MKV issues after power up
Topic: Human-Machine Interface and SCADA.
Originally posted by Danno on 6 November, 2007 - 8:56 pm
MKV Cores Not at A7 status
New Replies:
By CSA on 21 November, 2007 - 3:50 pm -
I think now you have a cable problem and/or a hardware jumpe. You may be a victim of the lack of...
By Danno on 21 November, 2007 - 1:44 am -
Thanks for your reply. I did check the DCC/LCC keypad and found that the TCEA cards in the...
from the Automation List department...
Bubbler method to measure solution height in tanks
Topic: Continuous process industries, DCS questions.
Originally posted by Manmeet on 21 November, 2007 - 12:38 pm
Measuring the height of the solutions in tanks through diffrential pressure (DP) Transmitter using bubbler method.
New Replies:
By Bill Hendrick on 21 November, 2007 - 3:48 pm -
Manmeet, The theory and limitations of measuring level using dP and bubblers is the same. You...
By itech on 21 November, 2007 - 3:47 pm -
I think you are out of luck, the interference of two different liquids is not possible with a...
from the Automation List department...
ControlNet Network Scheduling
Topic: PLCs and related questions.
Posted by BIlly on 21 November, 2007 - 3:47 pm
ControlNet Scheduling via RSnetWorx
from the Automation List department...
Current of Three Phase Convertor
Topic: Application Questions and Problems
Originally posted by James Isaac on 20 November, 2007 - 7:54 pm
Relation of DC and AC current in a three thyristor speed controller of DC motor
New Replies:
By Phil Corso, PE on 21 November, 2007 - 12:46 pm -
Responding to James Isaac's 20-Nov-07 (19:54) question... there are number of relationships...
from the power department...
Intervalve pressure fluctuations in Mark V
Topic: Application Questions and Problems
Originally posted by gt___maint on 21 September, 2007 - 11:33 pm
Variations in P2 intervalve pressure
New Replies:
By Greg Ponto on 21 November, 2007 - 12:45 pm -
We have also had interstage fuel pressure cycling, from day one, on all 9 MKV controlled 7FA...
from the Automation List department...
Motor Starter
Topic: Motion control, servos, steppers, etc.
Originally posted by Prakash on 18 November, 2007 - 5:12 pm
Solid state motor starter
New Replies:
By Phil Corso, PE on 21 November, 2007 - 12:41 pm -
Responding to forstand's 20-Nov (19:42) comments: 1) Loss-of-phase would prevent the mmotor from...
from the Automation List department...
Analog to PWM conversion
Topic: PLCs and related questions.
Originally posted by nathna on 20 November, 2007 - 12:35 pm
Analog to PWM digital ouput conversion
New Replies:
By aan - on 21 November, 2007 - 12:40 pm -
To convert analog signal to PWM, you can use timer. First, convert or scale analog input value...
from the Automation List department...
SMS to DNP3/Modbus/OPC Data Converter
Topic: Communications systems and equipment.
Originally posted by Glen Downie on 21 November, 2007 - 1:42 am
Converting data contained in SMS text messages to DNP3/Modbus or OPC Data types/protocols.
New Replies:
By David on 21 November, 2007 - 12:37 pm -
Look at the similar situation covered as 'string variables in Modbus' in this thread: ...
from the Maintenance department...
APACS + QUADLOC
Topic: Communications systems and equipment.
Originally posted by DAMENE Amar on 13 November, 2007 - 12:08 am
Loss of communication over DCS APACS + QUADLOC on compression gas
New Replies:
By Pascal Poirier on 21 November, 2007 - 12:36 pm -
The MNET communication (and MBX communication modules) is now obsolete. You can now use IEM modules...
from the Automation List department...
Using a UV lamp
Topic: Engineering and workplace issues.
Originally posted by none on 20 November, 2007 - 7:13 pm
Using a lamp that emits UV to test a UV flame detector
New Replies:
By Dave MH on 21 November, 2007 - 12:34 pm -
If you are testing a fire detection device then you have to use a UV test lamp supplied or...
from the AC Motor Speed Control department...
Prostar Inverter F1500-G Series
Topic: Motion control, servos, steppers, etc.
Posted by Mohammad Hamdan on 21 November, 2007 - 12:32 pm
What electronic parts (MCB, Contactor...) do i need when i am connecting Inverter of Prostar Inverter F1500-G0185T3C to a 3ph AC motor!
from the ENG department...
wincc to procidia
Topic: Programming languages.
Posted by MEHDIE on 21 November, 2007 - 12:26 pm
how can I connect procidia or 353 controller moore to wincc procidia
from the Electrical engg department...
Generator Field
Topic: Engineering and workplace issues.
Originally posted by achumman on 20 November, 2007 - 12:33 pm
Reason for using DC power for alternator field winding.
New Replies:
By naresh on 21 November, 2007 - 1:58 am -
If you want steady magnetic field you are using DC. But in case of AC the field strength will...
By Curt Wuollet on 21 November, 2007 - 1:14 am -
You would get some really interesting waveforms. Intuitively, your output waveforms would be ...
By Phil Corso, PE on 21 November, 2007 - 12:52 am -
Responding to Achumman's 20-Nov (12:33) question... This subject was covered in Thread # 1026226790...
from the Manufacturing Engineering department...
Deka Drill Press
Topic: Motion control, servos, steppers, etc.
Originally posted by Michael Ha on 20 November, 2007 - 8:02 pm
Readout for feed valve
New Replies:
By Curt Wuollet on 21 November, 2007 - 1:50 am -
You could install the scales used on mills for DRO and sample for rate. Or you could use a LVDT. ...
from the Automation List department...
Yokogawa DCS to Modbus
Topic: Communications systems and equipment.
Originally posted by Matthew C. on 15 June, 2007 - 10:37 pm
Yokogawa communication issues
New Replies:
By Junaid on 21 November, 2007 - 1:48 am -
Is there any one who can help me to solve a similar problem? I want to implement Modbus in Yokogawa...
from the Automation List department...
Calculation of cable size
Topic: Engineering and workplace issues.
Originally posted by Anonymous on 3 July, 2007 - 12:41 am
How to calculate cable size, switchgears and fuses for feeders and equipment?
New Replies:
By Steven on 21 November, 2007 - 1:45 am -
If you want to work to IEC standards you can use the following free cable sizing tool: ...
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