Today is...
Sunday, October 22, 2017
Welcome to, the global online
community of automation professionals.
Featured Video...
Featured Video
Watch an animation of a conveyor stacking operation demonstrating the use of a move on a gear command.
Our Advertisers
Help keep our servers running...
Patronize our advertisers!
Visit our Post Archive
Forum Archive
Fluctuating Allowable Spread in Hitachi H-25 Gas Turbine
Posted by Abubakar_96 on 2 June, 2017 - 3:04 am
The value of allowable spread is fluctuating from 80 degrees to 150 degrees at 21MW.
Fuse an IGBT -> DBR circuit
Posted by Leggir on 1 June, 2017 - 11:26 pm
After a catastrophic failure of a dynamic brake, I've been tasked to come up with a solution to prevent/restrict future failures.
Adding New Register in Mark V
Posted by Ben Salem on 1 June, 2017 - 6:19 pm
Need to add new contacts incoming from DCS to Mark V but I don't have spares (+HR)
Sensors and OEE
Posted by Jeremy Pollard on 1 June, 2017 - 10:09 am
Software to monitor a machine or process and determine when it is failing.
Generator Rotor Earthing
Posted by davidmcc on 1 June, 2017 - 7:31 am
Generator rotor earthing on a frame 6B generator
Foxboro RTU to Kepserver
Posted by Madara_inst on 1 June, 2017 - 6:51 am
want to read data from a foxboro rtu (mainly FOx rtu station with iagraf 5.13) via a kepware server
Frame 6B Generator Star Point NER
Posted by davidmcc on 1 June, 2017 - 6:40 am
Neutral earthing resistor on GE Frame 6B
Cut to Length Servo Control
Posted by Cinger on 31 May, 2017 - 7:53 am
Which application is best suited for this?
Meaning of Speedtronic Mark IV Error
Posted by DAMENE on 31 May, 2017 - 4:42 am
We need to understand this speedtronic Mark IV error
Connection Issues with 1756-ENBT Ethernet Bridge
Posted by Nate on 30 May, 2017 - 11:49 am
Connection issues between 1756-ENBT/A and EZ Marquee LED Display
Writing Modbus Values to an ODBC Database
Posted by Tachaqourrt on 30 May, 2017 - 3:16 am
How to write Modbus values in an ODBC database?
Low Hydraulic Pressure Lead to Closing GCV
Posted by Aptx4869 on 30 May, 2017 - 2:30 am
Low Hydraulic Pressure closes GCV but IGV remains stable
BACnet App?
Posted by judepom on 29 May, 2017 - 8:38 pm
BACnet bacmove app
Combined SRV/GCV
Posted by dkra on 29 May, 2017 - 3:46 pm
7500 series combined SRV/GCV assembled together vertically. GCV stem was stuck after recent overhaul.
Bailey Infi90 Cabinet Serial Number
Posted by Glenn1956 on 29 May, 2017 - 2:26 pm
How to decipher Infi90 Cabinet Serial #
Verify or Simulate Logic in Control Sheet and Control Macros
Posted by boosterhidrogen on 29 May, 2017 - 10:00 am
Looking for software to study my plant control sheet and control macros like dual valve, medium voltage motor
Software to View Water Level
Posted by rakibcnrd on 29 May, 2017 - 9:43 am
Software to View Water Level for ICT1000 with Modbus RS-485 Output
ESD Systems
Posted by Jenos on 28 May, 2017 - 12:42 pm
ESD systems basics
Unit ID
Posted by mgyinn on 28 May, 2017 - 12:14 pm
Unit ID of SDM120 Power Meter
Wiring Diagrams for Rotork Electric Actuator
Posted by varatharajan on 28 May, 2017 - 11:33 am
Need manual and wiring for rotork model k30 F10A
Yokogawa SSC10D
Posted by Sam Young on 28 May, 2017 - 8:57 am
Can Yokogawa SSC10D safety controllers can be purchased as second-hand?
Valve Leak Solution
Posted by anwartota9 on 28 May, 2017 - 8:21 am
Possible solutions to prevent a leak in LS-185D valve. The valve has two solenoids, one for opening and the other for closing the valve.
High Exhaust Spread in 6B
Posted by k000 on 27 May, 2017 - 7:09 pm
Reason for high exhaust spread in frame 6B machine
Elektronikon - CANbus Protocol
Posted by KCRider01 on 27 May, 2017 - 6:56 pm
Has anyone had experience with implementing HMS' Anybus CANbus-to-Modbus gateway for communicating with Atlas Copco's Elektronikon?
Ex ia Transmitters and Barrier
Posted by behzad_6718 on 27 May, 2017 - 5:02 pm
Using an Ex ia transmitters without a barrier
Wheelspace Thermocouple Installation
Posted by Fizzeus03 on 27 May, 2017 - 1:19 pm
Low impedance <0.6Mohms on both the 2nd Stage AFT wheelspace TC.
GE Mark VI Manuals
Posted by Sheheryar on 27 May, 2017 - 1:54 am
Looking for MARK VI Manuals
Free MQTT Broker for Modbus TCP/IP
Posted by Heru Iqbal on 25 May, 2017 - 9:12 am
MQTT and Modbus help advance the IoT in a complementary way. Using Modbus as a local interface to manage devices and MQTT as a global protocol to expand the reach of those devices.
Can Zone 2 Gc Equipment Inside a Zone 1 Gb Ex de Enclosure
Posted by Jimmy on 24 May, 2017 - 8:10 pm
Can zone 2 IECEx equipment go inside a zone 1 rated panel, or, is the atmosphere inside a Ex de Gb panel de-rated to zone 2?
Alarm System for Monitoring a Pond
Posted by Edward on 24 May, 2017 - 4:47 pm
I need to monitor a few ponds, the temp, oxygen level and flow rate into it. Not sure what to use.
GE Customer Training
Posted by Aptx4869 on 24 May, 2017 - 8:38 am
Anyone taken GE Customer Training (Gas Turbine) Classes?
Interfacing PLC and SCADA
Posted by Shailesh09 on 24 May, 2017 - 3:15 am
Connecting 5 individual Compressors in PLC system to SCADA.
RTD or Thermocouple for Bearing Temperature
Posted by hany5757 on 23 May, 2017 - 12:56 pm
Which is preferred RTD or thermocouple for measuring bearing temperature and why?
Potentiometer That Does Modbus RTU Via RS232 or RS485
Posted by Newbie in need. on 23 May, 2017 - 12:44 pm
I need a knob that can control a timer in my plc but I have no analog inputs.
How to Repair the 6FA GT Speed Ratio Valve Oil Leakage
Posted by Any on 23 May, 2017 - 3:18 am
Leaking valve on GE make Mark V control system. Looking for advice on how to arrest the leakage. And for advice on proper procedure for dismantling and assembling the SRV.
Selecting a Transmitter
Posted by mahmudrezasumon08 on 23 May, 2017 - 1:47 am
Criteria for selecting a transmitter from a vendor whose products you have not used before
Building a Yokogawa CENTUM CS3000 from Parts
Posted by misraz14 on 22 May, 2017 - 2:09 am
I need to build a CENTUM CS3000 system from spare parts
Oscilations with Multiple PIDs
Posted by felix on 21 May, 2017 - 6:15 am
Control of a (simulated) humanoid robot with PIDs to control each joint: osculations at 0.5*simulation frequency (=0.5*control frequency)
Scale Indicator Programming Code
Posted by mustafa1990 on 20 May, 2017 - 1:21 pm
cas indicator scale programming code
Belt-type Feeder Calibration
Posted by Faizanmoon on 20 May, 2017 - 3:03 am
what should be the right proceedure of calibaration.
Submersible Level Sensor
Posted by rakibcnrd on 19 May, 2017 - 11:45 pm
Definition of Hazardous area.
HMI interface with RTU
Posted by Bayoo on 19 May, 2017 - 7:32 pm
Interfacing a Local SCADA HMI with an existing RTU from two different Vendors?
Transmitter Impulse Tube Insulation
Posted by Aimo on 19 May, 2017 - 2:23 pm
Heat Tracing or/and Glycerine filling for DP impulse tubes
Unbalanced Loads and Negative Sequence Currents
Posted by kim on 19 May, 2017 - 11:11 am
Want to learn more about negative sequence currents...
Turbine Control - MARK 6 and MARK 6e
Posted by AsharMallick on 19 May, 2017 - 2:24 am
What is the basic difference between mark 6 and mark 6e?
GT Starting Means
Posted by kho00 on 18 May, 2017 - 11:13 pm
want to understand detailed operation of starting means
Mark 5 SRV Control
Posted by cloftin on 18 May, 2017 - 8:14 am
Rebuilt SRV is swinging
Modbus TCP/IP and Proxy
Posted by daniel on 18 May, 2017 - 5:22 am
How does the Modbus TCP/IP work when the ports used are disabled? can it use a proxy to go through that?
Communicating with an Allen Bradley 1394 GMC Digital Servo
Posted by Shoaib on 18 May, 2017 - 1:22 am
Problems Communicating with Allen Bradley 1394 GMC turbo system
Connectors for AB Kinetix Drive
Posted by Rob Riley on 17 May, 2017 - 5:40 pm
Need connectors for the Allen Bradley Kinetix 5500 drive power in/out, encoder, DC power, etc...
Liquid Fuel Bypass Valve
Posted by 6bturbinetech on 17 May, 2017 - 2:15 pm
How to check/stroke the Liquid Fuel Bypass valve to make sure polarity is correct
Japan Electrical Rating D2G4
Posted by duckpinjoe on 17 May, 2017 - 1:53 pm
Are Japanese electric motors with EXP rateing D2G4 same as USA Class1 DIV 1 Group C,D?
Ovation DCS in Power Plant Has No FGS System
Posted by boosterhidrogen on 17 May, 2017 - 12:32 pm
No fgs system either as an ESD or SIS in ovation DCS power plant
induction Motor V/Hz Ratio Is Low - Effect?
Posted by dirtyc on 17 May, 2017 - 10:55 am
Induction motor run at a lower than designed V/hz ratio...what happens?
Adding a Signal to GTG MKVI MODBUS
Posted by FlyinScot on 17 May, 2017 - 10:07 am
Need to add a point to DCS over Modbus from MKVI
Coriolis Flowmeter Problem
Posted by Lubiticks on 17 May, 2017 - 7:13 am
After transfer of vegetable oil the Endress Hauser Coriolis Flow meter total reading is off. What has been sent out is not the same when we compare.
PLC and 3X Register Communication
Posted by LastCall on 17 May, 2017 - 6:16 am
Can anyone recommend a PLC and software that can read 3X registers from a device
MODBUS Remote interface
Posted by Alessandro Galbiati on 17 May, 2017 - 4:30 am
Looking to modbus datalogger with GSM/GPRS connection
ISaGRAF to InTouch
Posted by Madara_inst on 17 May, 2017 - 4:17 am
how to receive data from ISaGRAF through Wonderware InTouch and OPC
MARK I Control System Backsheets
Posted by TheGingerbeer on 17 May, 2017 - 3:44 am
Collecting diagnostic data from Mark I system
Counters in Controller in MARK Vie system
Posted by Chiranjeevi on 16 May, 2017 - 11:52 am
why are some important counters are stored in controller ucsbh1a?
Full Speed No load Allowed Time for Steam Turbine
Posted by aminsameipoor on 16 May, 2017 - 1:48 am
What is the allowed time for operation Steam Turbine at Full Speed No load condition
Engine Exhaust Temperature Thermocouple
Posted by rakibcnrd on 15 May, 2017 - 11:31 pm
How to select proper thermocouple and monitoring system.
Forcing IBH OFF 9E
Posted by bil07 on 15 May, 2017 - 11:11 pm
DLN (Dry Low NOx) combustors 9E to force IBH OFF 85MW
Viruses and Malware
Posted by Jeremy Pollard on 15 May, 2017 - 4:27 pm
What kind of experiences have you had with industrial viruses and malware?
Engineer Needs Help with Analogic Circuit
Posted by Saul on 15 May, 2017 - 11:41 am
Help me understand how an analogic generator regulator (AVR) works
Simple and Inexpensive HMI Software
Posted by misraz14 on 15 May, 2017 - 10:05 am
Looking for simple and cheap HMI software with option for multiple web clients for a small application
YOKOGAWA CENTUM VP Historical Report
Posted by latsanyEE on 15 May, 2017 - 12:40 am
How to show message Number from historical report
Wet Compression or Inlet Cooling for Gas Turbines
Posted by Sudhir1 on 14 May, 2017 - 11:19 pm
MHI gas turbines with inlet cooling or wet compression implementation
Combustion Dynamics in Gas turbine
Posted by bil07 on 14 May, 2017 - 11:47 am
Description of combustion dynamics in Gas turbine, CDM
Floating Roof Tank Level Measurement
Posted by asudhish on 14 May, 2017 - 6:07 am
Can Floating Roof Tank level measurement be achieved through standard DP measurement
L4DE, L69DE in MARK VIe Gas Turbine
Posted by Chiranjeevi on 13 May, 2017 - 8:36 am
L4DE, L69DE variables in Frame 5 gas turbine with MARK VIe
Remote Monitoring of Analog Inputs
Posted by Faisal Rehman on 13 May, 2017 - 12:18 am
Remotely monitoring Analog Inputs (4-20mA) on web browser or mobile.
Four Quadrant Energy Metering
Posted by Arif_LP on 12 May, 2017 - 8:30 am
Facing problem in differentiating between wheeling power and import power
Best Fuel Control Mode for Mars-100 Gas Turbine
Posted by gascompoperator on 12 May, 2017 - 12:55 am
Need help to determine the best fuel control mode for Mars-100 gas turbine
SICK FLOWSIC100 Flare Ultrasonic Insertion Flowmeter
Posted by I&amp;E Guy on 11 May, 2017 - 8:58 pm
Seeking the experiences of people using SICK FLOWSIC100 Flare
Modbus TCP Topology and IPv6
Posted by Stan on 11 May, 2017 - 11:38 am
What are the limitations of having Modbus TCP with another protocol in the same network, ex, intranet in an enterprise for example?
Allen Bradley 1336 PLUS Drive - Restart After a Power Blip
Posted by Suleman on 11 May, 2017 - 10:50 am
Allen Bradley 1336 PLUS drive trips off after a power blip. Faults show power line loss and low bus fault.
Flow Direction for Butterfly Valves
Posted by SHIRLEY on 11 May, 2017 - 1:26 am
Flow direction/flow action for butterfly valves
Modbus RS485 ~16 Input Module
Posted by Alan on 10 May, 2017 - 6:52 pm
Looking for a tough digital input module that can connect into a RS485 line, Modbus address settable, 24Vdc supply.
Mark4 Diagnostic eeprom Fail
Posted by borrellimd on 10 May, 2017 - 4:02 pm
Mark4 eeprom HUMB u28, 30 failed diagnostic
Hagan Controls Corporation Pittsburgh PA
Posted by george moore on 10 May, 2017 - 3:44 pm
Looking for a parts distributor for a Hagen Control valve on a Fuel Oil system
Convert Concept 2.2 to ProWorx 32
Posted by adrianrr on 10 May, 2017 - 12:11 pm
Trouble converting Concept 2.2 program to ProWorx 32.
Saia PLC and cgi Calls
Posted by AlexJ on 10 May, 2017 - 3:52 am
ftp over http with ftp.cgi calls
Yokogawa CENTUM CS3000
Posted by misraz14 on 10 May, 2017 - 3:24 am
I want to build and program a CENTUM CS3000 system.
Boiler Registeration in India
Posted by Mani_1984 on 10 May, 2017 - 12:43 am
Is is possible to register a boiler in India before safety valve floating?
Quality Control in Gas Turbine Maintenance
Posted by benjie on 9 May, 2017 - 6:11 am
Developing quality checkpoints/checklists for mechanical, electrical and instrument maintenance jobs
HART Multi-Drop Connection Wiring
Posted by rajesharihant on 9 May, 2017 - 5:53 am
HART Transmitters in Multidrop wiring
Hydraulic Pressure Not Raise in Frame-Vi
Posted by Mastersv on 9 May, 2017 - 4:42 am
Any body guide how to set hydraulic pressure in frame-Vi machine
Reducing Noise from the Sensor Signal
Posted by rakibcnrd on 9 May, 2017 - 2:33 am
How to reduce noise from sensor signal?
mA to Voltage Conversion
Posted by rakibcnrd on 9 May, 2017 - 1:21 am
Resistor power rating for converting 0-20mA to 0-5 volt.
Vegapulls 62 Radar Level Transmitter Troubleshooting
Posted by gajanan94 on 8 May, 2017 - 3:27 am
Vegapulls 62 radar level transmitter fluctuating. Need help to troubleshoot.
Infinite Bus / Synchronization
Posted by Wisdom on 7 May, 2017 - 5:21 pm
What is an Infinite Bus?
Citect and Sepam in IEC61850
Posted by Fneto on 7 May, 2017 - 4:10 pm
Communicating between Citect 2016 and a Sepam relay in IEC61850 using protocol
Cimplicity Webview
Posted by misraz14 on 7 May, 2017 - 7:45 am
How to use pop up screens in web view
SCADA in Australia
Posted by misraz14 on 7 May, 2017 - 1:54 am
Most popular SCADAs in Australia
Ignition Proving Cycle
Posted by John on 6 May, 2017 - 8:20 pm
Ignition proving cycle for a steam generator in a coal fired power plant
Issues with GE 7E Hydraulic Systems
Posted by Okocha on 6 May, 2017 - 3:54 pm
At power plant some of hydraulic systems in some GE 7E units have following problems: gas hydraulic pressure low, Gas fuel hydraulic pressure low, and 88 HQ running.
Ansaldo Thomassen Frame 5 Renewal Parts Manual
Posted by Mohamedibr752 on 6 May, 2017 - 11:13 am
Looking for a soft copy of th Ansaldo Thomassen Frame 5 Renewal Parts Manual
Phase Shift in Generator Stepup Transformer
Posted by speed_tronic on 6 May, 2017 - 6:33 am
For a YnD11 generator step up transformer, will the stepped up voltage will go to grid from star winding with 30 degree phase shift?