Posts from...
Today, Thursday, August 21, 2014
Topic: Sensor technologies.
from the Need to find a sensor department...
Lightning Sensor
Originally posted by Andrew on 19 August, 2014 - 7:18 pm
I'm trying to find a lightning sensor
New Replies:
dopler radar is the answer....
By Lynn August Linse on 20 August, 2014 - 10:58 am -
I think this also depends on your goal. I'd assume the normal 'lightning' system is some form of...
http://www.vaisala.com/en/products/thunderstormandlightningdetectionsy stems/Pages/TLS200.aspx ...
Detecting lightning within a defined radius might be a problem. Not detecting the lightning, that's...
Originally posted by Harvard on 15 August, 2014 - 1:17 pm
Need to know how a slave device that lacks access to the RS-485 COMMON manage to maintain a Receiver common mode voltage between -7 and +12.
New Replies:
It has been a long time since I have interfaced to a device with a metal frame, every thing in my...
Many times 2 wire devices are referenced to frame ground and do not supply a terminal with + and -....
This would still be a chicken and egg issue. If this Slave has a valid receive then it would...
Topic: Power generation equipment control.
from the Power Station department...
Efficiency of ac generators
Originally posted by UNGKU KAMAL on 7 March, 2013 - 1:12 pm
When using ac generators in Power Stations, what are the advantages of using " Flux Cutting " types, compared to using " Magnetic Induction " types.
New Replies:
> Since you seem so well-steeped in Lorentz Law, why don't you explain it to us, and tell us...
Topic: PLCs and related questions.
from the Forum department...
Sample Program for Twido Suite
Posted by Gerry Finn on 20 August, 2014 - 6:15 pm
sending the value of a register as a SMS message
Posted by Eric on 20 August, 2014 - 5:34 pm
Selection process for gearboxes & chain for conveyors & packaging machines
Topic: Continuous process industries, DCS questions.
from the Heads, flows, pumps & motors combined department...
Pipe sizing for fluids and pump/motor selection
Posted by Eric on 20 August, 2014 - 5:14 pm
How do you select pipe size, metal as well as corresponding pump type with motors for process industry?
Topic: Software, including programming, OS issues, etc.
from the Forum department...
Adding Modbus register values together
Posted by David on 20 August, 2014 - 3:07 pm
How can you add MODBUS registers?
Topic: Software, including programming, OS issues, etc.
from the Forum department...
Wonderware Intouch clock
Posted by JazzyB on 20 August, 2014 - 2:01 pm
Intouch help in creating an HMI to regulate start and stop time
Topic: Human-Machine Interface and SCADA.
from the Forum department...
Web based HMI for Greenhouse
Posted by Bogaat on 20 August, 2014 - 1:41 pm
Looking for an affordable OPC Web based HMI solution
Topic: Communications systems and equipment.
from the Forum department...
Modbus Register Address
Originally posted by Whitepage on 15 August, 2014 - 4:30 am
I have a question about entering the register address in our program PME when I have a 4-digit address.
New Replies:
Actually, the original modicon only supported 0-999 addressing. Anyways, if your driver only...
If you are attempting to pair a master that won't allow configuration of offsets >9999 to a...
Topic: PLCs and related questions.
from the Forum department...
Accessing Real Time in GE FANUC PLC
Originally posted by kk on 19 August, 2014 - 6:12 am
How to get real time in GE FANUC VERSAMAX PLC for a calculation.
New Replies:
Use ServiceRequest 16, not 7. There is no reason to mess with Time and Date, when you can use the...
Use Service Request 7, search the online help for how to use it: "SVC_REQ 7 Read or Change the...
This link should provide sample logic for a 90-30, however, it should be the same for Versamax...
Topic: Application Questions and Problems
from the Automation List department...
Control Valve Cycle Measurement
Posted by Gerald Beaudoin on 20 August, 2014 - 8:04 am
How to measure the control valve cycles?
Posted by Ali on 20 August, 2014 - 7:30 am
Advantages of isochronous load sharing over iso-droop mode configuration of three generators.
Topic: Information resources, documentation.
from the Electrical department...
Steam Consumption for 50 Hz and 60 Hz
Posted by Aravazhi on 20 August, 2014 - 4:21 am
The Steam consumptions for using 50Hz & 60Hz
Topic: Continuous process industries, DCS questions.
from the OSI vs. Aspen department...
OSI Pi versus Aspen Info Plus 21
Originally posted by holger on 6 July, 2010 - 6:22 am
Chemical company with batch processes has to decide if they buy Aspen tech or OSI.
New Replies:
go for GE Proficy Historian, Best in solution and pricing as well.......
Topic: Application Questions and Problems
from the Forum department...
Runtime Alarm Management OPC
Posted by Kevin on 20 August, 2014 - 2:04 am
Looking for runtime Alarm management OPC
Topic: Power generation equipment control.
from the Power Generation department...
Getting a better understanding of GT control PART 2
Originally posted by Neo on 11 July, 2014 - 10:48 pm
Getting a better understanding of GT control PART 2.
New Replies:
CSA, Your response is much awaited. Your replies are very valuable to many of us. it helps in...
Topic: Power generation equipment control.
from the Forum department...
PX_VIB_GAIN in Mark V
Originally posted by anonymous on 12 May, 2009 - 12:16 am
how PX_VIB_GAIN in mark V works?
New Replies:
I was on-site and had a look at this. The gain change was NOT a function of speed as the machine...
Perhaps GE has set the gain to vary with shaft rotative speed to create a sort-of parametric...
Topic: Software, including programming, OS issues, etc.
from the Forum department...
iFix 3.5 Windows OS and Windows 7
Posted by BobLemonjello on 19 August, 2014 - 10:50 pm
Will iFix 3.5 run on Windows 7?
Topic: Power generation equipment control.
from the Operations department...
Load Commutated Inverter and Generator Neutral
Posted by Vinu on 19 August, 2014 - 5:43 pm
Difference in GE & SIEMENS Load Commutated Inverters.
Originally posted by Bill Futch on 12 August, 2014 - 4:08 pm
Starting motor does not cutout when a normal shutdown is given below 60% speed.
New Replies:
Bill, I am working on a reply to your post. Sounds like an interesting site, can't imagine...
Topic: Power generation equipment control.
from the Mechanical department...
Gas Turbine Gearbox Bearing Damage
Originally posted by Izhar on 6 August, 2014 - 12:53 pm
Possible causes for gas turbine gearbox bearing damage
New Replies:
Hello Toral I have taken some of the readings. I am surprised. Please see the below response. I...
Topic: Application Questions and Problems
from the Instrumentation and Control department...
Replacing a Ball Valve with a Different Control Valve
Originally posted by Kamaraj on 19 August, 2014 - 5:47 am
how can we replace mechanically ball valve into electric or pneumatic valve?
New Replies:
few possibilities, you need to replace the valve, or at least contact the manufacturer of the...
Posted by ioudas on 19 August, 2014 - 1:16 pm
Trying to connect a bm85 to a 984 265. Via MODBUS+
Topic: Continuous process industries, DCS questions.
from the Forum department...
Control Valve Position Command Signal
Originally posted by Gary on 11 August, 2014 - 2:28 pm
Looking for a device that generate control valve position signal for open loop control
New Replies:
the correct terminology is Remote/Local for the Setpoint Adjustments Auto/Man for automatic...
I think Roy got it - manual station. I thought almost any PID controller had an auto/manual or...
I believe you are looking for a Manual Loading Station, I haven't seen one for years. If you are...
just put your controller in manual and adjust the output > I need to manipulate a control...
Topic: Power generation equipment control.
from the CONTROLS department...
Increase External Load Mode of Turbine
Posted by BOB on 19 August, 2014 - 8:23 am
How can we increase initial load of GT (GE 9FA) after startup while being in external load?
Topic: Continuous process industries, DCS questions.
from the Operation department...
Lube oil temperature and bearing vibration
Originally posted by lock_out on 12 June, 2007 - 10:33 pm
Is there any correlation between lube oil temperature and bearing vibration?
New Replies:
Check if you changed the OIL PUMP (attached to the turbine axis) during your last shut down. If you...
Topic: Power generation equipment control.
from the Forum department...
Air filter DP v/s Air Flow
Originally posted by Sadashiv Bhise on 18 August, 2014 - 8:12 am
On rainy days Gas turbine unit load drops from 108 MW to 70 MW, reduction in air flow although there no increase in DP across Air filter.
New Replies:
> seems problem with air intake filter DP measurements. is it showing correct reading? It is...
seems problem with air intake filter DP measurements. is it showing correct reading?...
Topic: PLCs and related questions.
from the Instrumentation department...
Local Fault on SLC 500
Originally posted by casualguy on 18 August, 2014 - 3:28 am
Local fault indication on our SLC 500
New Replies:
In my experience, Flex I/O doesn't seem very mechanically robust, especially the little plugs...
Posted by Jolek on 18 August, 2014 - 1:36 pm
Turbine MKVIe controllers not reaching online state

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