Posts from...Today, Monday, September 15, 2014
from the Forum department...Yokogawa DCS Analog Module AAI143
Difference between analog mA value and their correspondent raw value.
from the Forum department...Power Meter Destroys Modbus RTU Bus Communication?
Problem with SCADA system that supervises electrical power flow for a residential building. Connected with Modbus RTU over RS485 daisy-chained 2-wire. The communication on the bus seems to be destroyed with Schneider PM750 connected.
By Harvard on 15 September, 2014 - 11:45 am -
Two points: 1. RS485, technically speaking, is a 3 wire system, A, B and COMMON. But the...
Some notes: > They are interconnected through daisy-chain 2-wire RS485 The shield and...
By Lynn August Linse on 15 September, 2014 - 9:51 am -
It is most likely a grounding issue - that the 2 vendors approached the 'reference signal to...
from the gas turbine controls department...Removing Flow Divider Instrumentation on GE 7EA Turbine
GE 7EA turbine, will removing flow divider instrumentation affect operation on Fuel Gas, Mark IV Startup Lockout?
Dan, It should not. You can easily just determinate the speed pickups from the AIO TB and the...
from the CPP department...Generator Turbine Speed Control
Effect of Reactive load throw off on Turbine (GTG) speed after Generator independent from Grid power.
Manoj, 1) The fuel was not high at the time of isolation--it drifted higher. There are two...
By Manoj on 15 September, 2014 - 12:56 am -
Many Thanks CSA for the prompt reponse, Coming to your question: The turbine-generator (GTG)...
from the Calibration department...Rosemount 3051 Calibration
Rosemount 3051 Calibration
By Sam on 15 September, 2014 - 7:28 am -
Ok let's get you on the right track. I will give you a detailed explanation on how to setup any dry...
Yes. 12-117 in wc....
So if I go through the zero suppression that would be like me rearranging it from 0-105" H20...
from the Gas Detector, Engineering department...Using a sigmatel USB IrDa dongle to communicate a Drager Xam 2000 with CC Vision software
How to use a sigmatel USB IrDa dongle to communicate a Drager Xam 2000 with its CC Vision software for calibration
By Xpresi on 15 September, 2014 - 3:51 am -
Hi. I have the same problem with a sigmatel usb-irda dongle and windows XP. Do you get to solve...
from the Maintenance department...Fluid Variable Speed Drive Hunting
Hunting problem in scoop of Voith Geared Variable Speed Coupling R 18 K 500 M
By Mohammad Kashif on 14 September, 2014 - 11:46 pm -
> if it is pneumatically actuated, you might check for water build up in the instrument air...
if it is pneumatically actuated, you might check for water build up in the instrument air line....
from the Process Control department...Proficy Machine Edition 8.0
Proficy Machine Edtion 8.0 and 8.5
from the Power Generation department...When Will 88CR start?
GT start up sequence, when will 88CR get started?
Neo, You don't have to ask--no one does! I wouldn't comment until you posted L1x and L1Z from...
CSA: Can i ask questions about L1X, L1Z and l4hr. I am just wondering whether L1X goes to...
CSA: To be honest, every of your response helps! "Lastly, can you determine how l72qez...
Neo, You used to use the Thumbs Up/Thumbs Down indicator when you found the post useful or...
CSA: Thanks a lot. Again it helps a lot! And i find l72qez is different from others,as others...
Neo, There was another query in the original post, and we'll get to that in a moment. I would...
CSA Thank you so much for your reply. Your detailed response always helps! I think the way...
from the instrument department...Gas Chromo readings
Retention time of gas chromo
By W.L. Mostia on 14 September, 2014 - 12:15 pm -
To the Moderator, In regards to the statement: "Moderator's note: I think...
from the Forum department...Wafers Handling Robotics Arms
Questions about robotics arms and the accuracy requirements in manufacturing
from the opc department...Communication between Triconex PLC and Matrikon OPC Server Using TCM Module
Issue with Communication between Triconex PLC for SOE and Matrikon OPC server using TCM Module
from the Forum department...Voltage Levels in DO Cards of PLC
Which DO cards are better from the Reliability perspective - cards 24 VDC or cards that give 110 VAC?
By Steve Myres on 13 September, 2014 - 5:49 pm -
My take is a bit different. DC are the most reliable in most circumstances. Solid state outputs...
By Curt Wuollet on 12 September, 2014 - 10:34 pm -
The most reliable will be 24VDC transistor outputs. Relays have a lifetime. Triacs are in the...
from the Electrical Engineering department...Communicate ER300P energy meter with PLC
How do I enter programming mode and communicate ER300P meter with PLC SIEMENS 200?
By Ummachan on 13 September, 2014 - 3:03 pm -
I communicated the meter with PLC. Changed the Meter ID using PLC program. The Values or the...
from the Forum department...Concept 2.6 Compatiblity Issue
Running windows 8.1 64bit OS and have a concept 2.6 compatibility issue.
Concept 2.6 is a Win-16 program. It still runs on new Windows OS's but only the 32-bit versions. ...
By Curt Wuollet on 12 September, 2014 - 10:36 pm -
Why not? Regards cww...
By Bob Peterson on 12 September, 2014 - 8:04 am -
Have you considered contacting tech support or going to the tech support web site and looking for...
Sorry for the bad news: Concept is a 16 bit application and has not/will not be qualified on Win...
from the Generator Stator bar department...Generator Maintenance
The generator tripped due to earth fault. We found some particles which defected the stator bar shorted to core. Now the surface of core is also damaged.
from the Process department...Power Plant Performance
What are the important process parameters for power plant performance?
from the plc department...Protection of blocks in step 7
I have some questions about protection of blocks
in SIMATIC Manager in step 7
in SIMATIC Manager in step 7
By Sathish on 13 September, 2014 - 7:32 am -
Its really a good thing... thank you so much and thanks a lot for this. wonderful hunting :) ...
from the Instrument and Control department...Siemens S5 CPU 922 Run and Stop LED Do Not Turn ON
Run and Stop LED on front of Siemens S5 922 CPU doesn't turn ON on powering of rack. Only BASP LED on front of CPU is turned ON.
I have tried doing cold reset and warm rest on processor. The situation remain as such. Both STOP...
By Kevin Frechette on 11 September, 2014 - 2:32 pm -
Have you done a cold start by holding the reset switch up and cycling the run switch from stop to...
from the operations department...AVR Functioning and MVAR control
AVR Functioning and MVAR control for Gas and Steam turbines
By suryapadhu on 12 September, 2014 - 6:52 pm -
As usual expected Mr.CSA is the one who strikes the reply earlier. Thank you very much sir... ...
suryapadhu, Thank you for taking the time to search through the archived threads looking for an...
from the Forum department...TDC 3000 Remote Station Hanging
Remote Honeywell ES-T hangs with the RPS kit. Is it possible to extend the LCN using fiber without using obsolete Honeywell equipment?
from the Instrumentation department...ABB Flowmeter -Flow Data Is Less
flow meter data is less compared to other flowmeters
what are the units for the 20 mA value? how long does it take for the 1 meter level change?...
By sandeep on 12 September, 2014 - 9:58 am -
Hello Walt 4-20mA output from the flowmeter is taken to SCADA (Labview) through PLC (Schneider) ...
>> "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...
By Walt Boyes on 11 September, 2014 - 11:50 am -
Couple questions for you. Which output are you using, or are you looking at a totalizer on the...
> "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...
from the maintenance department...Different Parameters on Siemens 7SJ6005 Relays
Why are some of the parameters in new Siemens 7SJ6005 relay missing or different from relay model with the same part number?
from the Forum department...Bently Nevada 1900/65A Equipment Monitor Input Problem
Vendor converts input signal before 1900/65A and convert back to same signal at the output
from the Forum department...DCS analog input problem
DCS Analog input signals didn't work with ADAM card
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...
from the Forum department...RSLinx issue in VMWare WIn 7 32 bit VM
I can do a serial upload and download but I cannot go online with RSLogix 500 inside a VM running WIn 7 32 bit
Years ago I had trouble with VMWare and a Keyspan USB to serial device. I switched over to a Gearmo...
from the hmi department...ABB CP430T HMI
Setting up a trends (graph) in ABB CP430T HMI
from the C&I department...Mark V Signal Scaling in HMI
Exciter signals gain in mark V
VM, Hmmm.... Well, even if these signals appear in the IO.ASG for a unit, it's not certain they...
from the Simulation department...Automatic Volage Regulation
Question on the behavior of AVR after synchronization.
By surya on 11 September, 2014 - 10:23 am -
> We have on load tap changer for transformer. When generator MVARS are high (lagging side) due...
from the instrument department...Level Transmitter on Condensate Drum
Erratic reading for level transmitter on condensate drum
By Sam on 11 September, 2014 - 6:26 am -
You are really not giving much for us to work with so if the assumption I am making is wrong it is...
Q: How many Zen masters does it take to screw in a light bulb?
A: None. The Universe spins the bulb, and the Zen master stays out
of the way.