Posted by Anoop on 27 December, 2011 - 2:16 pmComplete DCS failure - loss of logic configurations
Recently in our coal-thermal power plant, two 500MW units of maxDNA DCS had a simultaneous complete loss of logics of all 214 processors (active and redundant included) leading to extremely dangerous plant conditions.
Posted by MPAC on 27 December, 2011 - 1:39 pmCTG Exhaust Pressure Trip
Cause of Exhaust Pressure spikes on 7FA
Posted by vipulinstru on 27 December, 2011 - 12:36 amTricon 1131
Looking for important tips for handling a tricon 1131 PLC...
Posted by Gray on 27 December, 2011 - 12:23 amShort circuit of one channel affecting others
We are in currently in FAT testing Siemens Safety IO's and at one point in the procedure (the short circuit test), shorting one channel trips all channels on the card and others on the module! (Using 6ES7326-2BF10-0AB0)!
Posted by Mohamed salem on 26 December, 2011 - 3:26 pmProblem in cimplicity point on screen
Displaying differential pressure reading in cimplicty version is 6.1
Posted by Shaji on 26 December, 2011 - 10:53 amGT Correction Curve for frequency
Can someone enlighten me about correction curve with frequency. I have read about correction curve for ambient conditions (P,T,RH) but was wondering if anything exists for Frequency.
Posted by Mutaza on 26 December, 2011 - 8:56 amcontrol valve
Controlling water flow using a control valve
Posted by nikhilkapoor_vit on 26 December, 2011 - 2:32 amGas Turbine Area and Equipment Notification Standards.
Is there any particular standard for denoting tags of equipment n GAS Turbines?
Posted by KUN on 26 December, 2011 - 1:40 amSTEAM INJECTION
GTG-E reduce 0.5 MW (35 to 34.5 mw) steam injection. Trip by control vlv trip lock out Frequent
Posted by CSA on 25 December, 2011 - 11:12 amHappy Holidays and Best Wishes!
Best wishes, and thanks for a good run!
Posted by engineer on 25 December, 2011 - 10:20 amMCC panel power measurement
measurements for the MCC panel
Posted by Bhargav Purohit on 25 December, 2011 - 10:06 amwindows run command
is it possible to close 'explorer.exe' by run command ? or cicode?
Posted by karthik on 24 December, 2011 - 10:57 amDelayed setpoint in V94.2 siemens GT
Purpose of delayed setpoint in V94.2 siemens gas turbine
Posted by Alan Tan on 24 December, 2011 - 4:54 amICONIC Modbus OPC Server
Need a free Modbus OPC server
Posted by Aliya on 23 December, 2011 - 1:03 pmGT tripping points clarification
Needs to understand the various tripping points meaning for company system.
Posted by ram on 23 December, 2011 - 9:14 amtransformer vector group
Correct transformer vector group - One of my engineer frd suggest me to go ahead with Ynd11 and another one suggested me to choose Ynd1.
Posted by SAM on 23 December, 2011 - 4:26 amCommunication between DCS and Subsystems
Communication between DCS and Subsystems
Posted by harsha on 23 December, 2011 - 2:03 amHoneywell EBI server interface
Posted by IMD Sup on 23 December, 2011 - 2:02 amPower Supply
Power Supply reading in voltmeter slowly reducing less almost 1.5V per second.
Posted by Samir Gasimov on 23 December, 2011 - 2:00 amRTD termometrs
RTD temperature sensor
Posted by controman on 23 December, 2011 - 12:45 am9001E GT Trip by loss of flame
Gas turbine tripped by loss of flame
Posted by Utz on 22 December, 2011 - 7:18 pmStandards Questions
Transmitter failure mode and ESD transmitter validation logic standards
Posted by Utz on 22 December, 2011 - 7:16 pmEmergency Shutdown System Transmitters Failure Mode
Best configuration for emergency shutdown system
Posted by Khan1984 on 22 December, 2011 - 3:54 pmElectronic Valve ON/OFF Problem
The pulse generated from the DO card of DCS is not a perfect square wave.
Posted by suneel on 22 December, 2011 - 3:29 amback pressure steam turbine vibration related issue
back pressure steam turbine vibration related issue
Posted by Shree on 22 December, 2011 - 12:59 amScreen Saver
Screen Saver in Panel View PLus
Posted by ernie on 21 December, 2011 - 9:30 pmtransformer vectors
To find out the schematic diagram
Posted by Rui Monteiro on 21 December, 2011 - 2:19 pmVijeo Citect ModBus RTU Write Problem
Vijeo Citect ModBus RTU Write Problem
Posted by Aliya on 21 December, 2011 - 2:04 pmIGV malfunction?
GE Frame 6 machine load limit at part load with IGV temperature control ON
Posted by Rokan Uddin on 21 December, 2011 - 1:29 pmCondenser water box outlet valves automatically close
Condenser water box outlet valves closed in auto when one of the Cooling water pumps trip.
Posted by Mohamed Salem on 21 December, 2011 - 10:00 amProblem in cimplicity point on screen.cimplicty version is 6.1
Problem in cimplicity point on HMI screen
Posted by Oliver on 21 December, 2011 - 8:54 amVijeo Citect Alarm sound
Change the way the siren is sounded
Posted by Prasad on 21 December, 2011 - 5:58 amLP Injection Limiter for Steam Turbine
Why LP Steam Governing valve has limiter.
Posted by syurish on 21 December, 2011 - 3:59 amAll about Sensors
New issue of the IFSA Newsletter - December 2011
Posted by Ahmed on 21 December, 2011 - 12:17 amFrequency of maintenace for F&G detection system
Frequency of maintenance of F&G detection system?
Posted by Alan on 20 December, 2011 - 10:35 pmUsing Modbus Card in PC
Need advice on the use of Modbus interface card on PC
Posted by AwesomeGod on 20 December, 2011 - 7:25 amRed Lion G308C1 help
Help uploading L5K file
Posted by sameralberto on 20 December, 2011 - 5:30 amExhaust temp trip limit
exhaust temperature for GE frame 6 & 7
Posted by Mat Szwarga on 20 December, 2011 - 4:48 amGE Fanuc SPL protocol
Searching for sample programs.
Posted by Roy on 19 December, 2011 - 3:57 pmIs Unitronics v570 PLC memory expandable??
Trying to add to the memory integers of a Unitronics V570 PLC so it can handle more sensory input from Ethernet Port
Posted by marwanco on 19 December, 2011 - 3:56 pmHIgh Speed Counters
How to connect 8 HSC to Siemens S7-200?
Posted by Barbara Peg on 19 December, 2011 - 10:29 amAtomizing Compressor Oil Leakage
Atomizing Compressor Oil Leakage
Posted by Padraig O'Murchu on 19 December, 2011 - 10:22 amModbus RTU
Problems establishing communications (Modbus RTU) between an Omron CP1H PLC
Posted by Abouhabib on 19 December, 2011 - 8:46 amGrid connection feeders power oscillation
What is the physical cause of load oscillation of generator
Posted by suneel on 19 December, 2011 - 8:38 amback pressure steam turbine vibrations related issue
high vibration at HP and LP side bearing of the turbine
Posted by DK on 19 December, 2011 - 5:25 amPressure/force sensor
Looking for sensor
Posted by daniel on 19 December, 2011 - 4:04 amSimens Online Table Control
How i sum the value in online table? Any one have idea about this?
Posted by KHLID1144 on 19 December, 2011 - 1:31 amPLC5 BTW
How to send configuration BTW
Posted by mikebro on 18 December, 2011 - 8:56 pmMotor RTDs
Wiring motor RTDs in SERIES?
Posted by hassanaagib on 18 December, 2011 - 3:57 pmIGV problem
IGV some times did not tracking command
Posted by walgrind on 18 December, 2011 - 1:24 pmCrc errors using jamod with Rxtx library
crc errors using modbus application with Rxtx library
Posted by zouhen on 17 December, 2011 - 11:47 pmGenerator load fluctuation
All generator load fluctuated while they are in load limiter, the fluctuation reached 4MW each.
Posted by Ciccio on 17 December, 2011 - 4:05 pmSimulate HMI to PLC communication
How to simulate scada communication?
Posted by Tyler C on 16 December, 2011 - 12:54 pmWatlow F4 temperature control
Attempting to change the temperature of a temperature chamber through a Watlow F4 controller and a serial connection.
Posted by seifj on 16 December, 2011 - 9:56 amfiber optic signal
fiber optic signal attenuation
Posted by 1Morgen on 16 December, 2011 - 5:54 amModbus registers for UPS Newave documentation
Looking for a link to a document - User guide with Modbus registers for UPS Newave approx 200kVA
Posted by LT on 16 December, 2011 - 1:00 amGE 7 transfers from premix to extended lean firing mode
GE 7EA DLN1 transfers from premix to extended lean lean, at or near base load, for no apparent reason.
Posted by IBcontrol on 15 December, 2011 - 11:21 amInterbus
Advice on Interbus obsolescence needed
Posted by Mark on 15 December, 2011 - 11:00 amUnidrive 2402
Drive not resetting to factory
Posted by Mohammad Noruzi on 15 December, 2011 - 10:58 amGas Turbine Temp. Spread Analyze
Purge check valve & exhaust spread
Posted by Hoo on 15 December, 2011 - 9:09 amFOXBORO Differential Pressure Transmitter
Differential Pressure transmitter as Flow meter
Posted by Sukhdev Singh on 14 December, 2011 - 8:53 amArcnet Specifications
need specifications for arcnet coaxial cables used for communication between <C> core and <I> stations
Posted by calvein on 14 December, 2011 - 12:11 amCPD in GT
CPD in GT
Posted by Ki on 14 December, 2011 - 12:03 amControl of a UAV
Help regarding a MATLAB project on designing a controller for a UAV with the same dimensions as an F-16.
Posted by patria giri on 13 December, 2011 - 8:27 pmbearing leveling for GE Gas Turbine
bearing leveling for GE Gas Turbine
Posted by patria giri on 13 December, 2011 - 8:23 pmHGPI for GE MS9001E
scope of HGPI GE MS 9001 E
Posted by Process Engineer on 13 December, 2011 - 3:26 pmABB Masterbus 300 Max Comm Distance
What is the max distance of the Masterbus 300 network
Posted by NST on 13 December, 2011 - 2:26 pmloop "trembling of servomotor
the loop is trembling between the drive and a servomotor
Posted by engineer on 13 December, 2011 - 10:10 amHarmonics Generation
harmonics generation using bridge converter on 3 phase line
Posted by kofiappiah on 13 December, 2011 - 8:22 amGas turbine starting device bogged down trip
the speed of our frame 6 gas turbine remained at 41.6% and could not increase again during a normal start
Posted by kk on 13 December, 2011 - 7:25 amMark V Historian
I would like to add a second Arcnet Card to our Mark V PI Historian
Posted by Purrdie on 13 December, 2011 - 5:53 amHoneywell HC900 Status Indicator
On Honeywell HC900 CPU status indicator flashing
Posted by ahmed ali on 13 December, 2011 - 3:13 amConnection between wincc scada, wincc flexible and step 7
Communication between wincc scada v6.2, wincc flexible and step 7
Posted by Rhy on 12 December, 2011 - 11:09 pmSiemens Logo programmimg
Suggestions for finding a Siemens Logo programmer
Posted by Irene on 12 December, 2011 - 10:58 pmTelemacanique Magelis Screens
Need a replacements for a telemacanique magelis screens
Posted by electrical on 12 December, 2011 - 2:16 amcable connection
Posted by JON HALL on 12 December, 2011 - 2:06 amMODBUS CONTROLL OF MULTIPLE SLIT SYSTEM AIRCONDITIONERS
split system air conditioners in mining camps for control of power usage from control central
Posted by Uday on 10 December, 2011 - 2:45 pmControl Of DC motor from PLC with help of L293D ic
Driving 12v dc motor with help of plc
Posted by me on 10 December, 2011 - 2:22 amRecovering from SCADA software crash
if a SCADA software suddenly crashed, what will we do?
Posted by M. Frasca on 9 December, 2011 - 3:40 pmWinXP dcom settings
ConductorNT 6.0 dcom settings for Windows XP
Posted by Jorge Guespi on 9 December, 2011 - 11:30 amTesting with MODSCAN a communication between EGX100 and slave
I need help to use the MODSCAN to test the communication between a ECMB (Energy meter communication board) that permits communicate through Modbus RTU, and the gateway EGX100 (of Powerlogic)that permits communicate between Modbus and Ethernet.
Posted by Ankan on 9 December, 2011 - 6:33 amsolution of a SCADA system
Is it possible to give diff authentication to diff operator station connected in same control network.
Posted by Daman on 9 December, 2011 - 3:57 amLatest Version Invensys IEE & IACC
Features of Invensys IEE & IACC
Posted by Ahmed on 9 December, 2011 - 2:34 amModbus Communication cause 24VDC power Float by 6Vdc
the power supply is floating by 6VDC on the compressor panel due to a serial link comm on between the PLC AB Flex IO prososf module and the VFD motor drive motor.
Posted by Adeel Imtiaz on 8 December, 2011 - 11:03 pmFiring Mode Speed Problem
Gas turbine Speed ramp in firing mode
Posted by Hackman on 8 December, 2011 - 8:04 pmConnecting devices using HART protocol
Is Optiflex 1300C TDR (Krohne) compatible with TS550 console (Franklin Fueling System)?
Posted by mohan on 8 December, 2011 - 4:54 pmadjusting linearity
how to adjust the linearity error if provided
Posted by tommyboy on 8 December, 2011 - 2:39 pmBently Nevada vibration/position procedures
Need help creating vibration/position procedures
Posted by Moller on 8 December, 2011 - 5:37 amMass flow calculation
How to calculate the mass flow of the axial compressor
Posted by Chrisman on 8 December, 2011 - 3:38 amDifferent Modbus Value Indication Nuflo 2000 ModWorx vs Modscan32
Different Modbus Value Parameter Reading comparing ModWorx and SCADA is showing different value.
Posted by ibrahim abdel mohsen on 8 December, 2011 - 1:58 amCS7X CAC control system design
CS7X CAC control system from production .
Posted by G.Rajesh on 8 December, 2011 - 1:35 amHydraulic ratchet trouble
GE Frame-6B ratchet mechanism is not working
Posted by sardar9 on 7 December, 2011 - 1:37 pmDenox temperature
Denox Steam high Temperature high trip
Posted by Sandeep Sharma on 7 December, 2011 - 11:39 amHigh speed counter for s7-224xp
sample logic for high speed counter
Posted by Mandar on 7 December, 2011 - 5:30 amGPS Time Synchronization
GPS System time synch signal
Posted by ALFREDO IRIARTE on 7 December, 2011 - 12:12 amBSAP TO MODBUS
protocol BSAP / Modbus / DNP3 converter
Posted by Saber on 6 December, 2011 - 11:55 pmConfiguring Unused Servo output Loop #6 for IGV.
Configuring Unused Servo output Loop #6 for IGV.
Posted by NST on 6 December, 2011 - 11:03 amINDRAMAT question
Indramat system that "from time to time" starting to tremble.
Posted by M.S. KALEEM on 6 December, 2011 - 9:39 amBOILER DRUM LEVEL GLASS ISOLATION VALVE
TELL ME WHY BOILER DRUM LEVEL GLASS ISOLATION VALVES ARE OPPOSITE IN DIRECTION?
Posted by M.S. KALEEM on 6 December, 2011 - 9:32 amHEAT RECOVERY STEAM GENERATOR
WHY DO WE USE FORCE CIRCULATION IN HEAT RECOVERY STEAM GENERATOR?
Speer's 1st Law of Proofreading:
The visibility of an error is inversely proportional to the
number of times you have looked at it.