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Forum Archive
Air gap current
Posted by Mohan on 13 November, 2012 - 5:45 am
Air gap current in synchronous machine
11
replies
Static frequency converter
Posted by chandru on 13 November, 2012 - 5:41 am
questions about using a static frequency converter
4
replies
Starting of motor through star delta
Posted by Shaheed on 13 November, 2012 - 3:02 am
Running a three phase 400V 50HZ 2900RPM induction motor through a star delta starter
1
reply
HVAC alarm
Posted by Michael on 13 November, 2012 - 2:38 am
The turbine I am working on keeps going into alarm state and I cannot understand why.
2
replies
Using Modbus data packets and setting up the registers so they can be read from a Modbus master
Posted by new_user on 12 November, 2012 - 3:54 pm
I need to download PLC Recipe data in a Modbus format and set up the registers so thay can be read from a Modbus master.
3
replies
Exhaust Stack Silencers/Baffles 7 FA
Posted by Tom Murphy on 12 November, 2012 - 8:38 am
7FA Exhaust Stack Silencers/Baffles
Help modbus experts
Posted by bencabz on 12 November, 2012 - 3:03 am
Programming fc302 danfoss inverter control by fpx-panasonic plc
6
replies
Level switch or level transmitter?
Posted by Abdolazim Hasseli on 12 November, 2012 - 12:27 am
Why is it better to use level transmitter instead of level switch?
1
reply
adding more points to user define screen on MKV system
Posted by obed opoku on 11 November, 2012 - 4:35 pm
adding more points to user define screen on MkV console.
2
replies
DCC card alarm problem
Posted by Mark V on 11 November, 2012 - 4:26 pm
While we work during normal operation we take a diagnostic alarm
3
replies
EX2000 lost communication with Mark VI
Posted by Ali_2013 on 11 November, 2012 - 4:03 pm
EX2000 lost communication with Mark VI
Static frequency converter
Posted by mss on 11 November, 2012 - 7:59 am
Questions regarding static frequency converter
2
replies
Siemens S7CPU can't see slave DP on Profibus
Posted by Mike on 11 November, 2012 - 3:45 am
Problem with S7CPU seeing slave DP on Profibus
8
replies
Voting mismatch, Mark IV+
Posted by Transporter on 11 November, 2012 - 2:08 am
We have one problem in our control system Mark IV+
2
replies
Pressure Instrument Selection
Posted by Thouseef on 10 November, 2012 - 12:17 pm
Criteria - how to select a pressure instrument based on corrosion and plugging for petroleum pipelines?
Detection of load cell failure in system with 16 loadcells
Posted by Sudhar on 9 November, 2012 - 10:07 pm
Detection of load cell failure in system with 16 loadcells
ATEX Certified Laptop
Posted by Vijay on 9 November, 2012 - 10:13 am
Requirement of ATEX certified Laptop.
Detection of load cell failure
Posted by Sudhar on 9 November, 2012 - 6:20 am
Detecting of load cell failure either in Hardware/Software
Simple invert pendulum by using feedback linearization
Posted by IETR on 9 November, 2012 - 4:48 am
a question about a simple invert pendulum, feedback linearization
Motor Control Fan Control Pump Control
Posted by Mahesh Thapaliya on 9 November, 2012 - 1:09 am
Motor speed control, soft start, pump control, fan control
4
replies
High voltage generators
Posted by sridhar Reddy. Deverapalli on 8 November, 2012 - 10:13 pm
Can anyone will help me to understand on using the High voltage generators?
5
replies
Floating point vs integers
Posted by Jim on 8 November, 2012 - 10:03 pm
Using floating point numbers vs using integers when designing a slave modbus device
Level Switch for Cryogenic Service, Zone 1
Posted by OZI on 8 November, 2012 - 8:16 am
Looking for a level switch suitable for cryogenic service (Hydrocarbon -100 Deg C to +100 Deg C)
Loop Test Procedure & Report Format
Posted by World Energy on 8 November, 2012 - 2:38 am
field sensor / control wiring loop test procedure and report format.
1
reply
MARK VI TTXM variation
Posted by Murali on 8 November, 2012 - 1:49 am
For our GE frame 9 machine, we see a large fluctuation in the actual GT Exhaust Temperature Control Curve (ie., the chart plotted between Exh temperature corrected Median Vs CPRSR Discharge Pressure). What is the likely reason for this?
3
replies
FactoryLink 6.6 installation error
Posted by P Knowles on 7 November, 2012 - 11:45 am
Error on installation of FactoryLink 6.6
Voest Alpine EEPROM error.
Posted by Eric Enquist on 7 November, 2012 - 11:34 am
Voest Alpine Governor with a MIPREG controller is giving us a EEPROM error and tripping the system relay.
Bottom Water of Crude oil tank auto drain
Posted by Inst on 7 November, 2012 - 10:32 am
Bottom Water of Crude oil tank auto drain
1
reply
What does trip mean?
Posted by Prototip on 7 November, 2012 - 8:27 am
trip in cause and effect
3
replies
Modbus - Plc - opc Connection
Posted by Savronik on 7 November, 2012 - 2:51 am
Modbus - Plc - opc Connection
4
replies
Interface transmitter displacer type
Posted by khashayar on 6 November, 2012 - 11:44 pm
interface measuring
Relation between Range and Count in SCADA
Posted by JM on 6 November, 2012 - 5:25 pm
Relation between Range and Count in SCADA? any Formula to be taken care?
2
replies
Gas turbine compressor output
Posted by kakil on 6 November, 2012 - 1:19 pm
pressure output from gas turbine compressor
1
reply
Tatsuno dispenser pump rs485 protocol
Posted by Goofey Goofey on 6 November, 2012 - 1:15 pm
Looking for tatsuno dispenser pump manual
6
replies
MODBUS communication and total time scan
Posted by VSS on 6 November, 2012 - 11:00 am
How to calculate total time scan for data fetched over MODBUS
Reliance Quality Controller & AutaMax
Posted by Pradeep on 6 November, 2012 - 9:22 am
problem with automax 2 axis servo controller
E&H Tank scanner
Posted by Abdolazim Hasseli on 6 November, 2012 - 6:07 am
Any replaceable parts in NXA820 for V1/Modbus input?
1
reply
Upgrade VCMI
Posted by shakarami on 6 November, 2012 - 2:13 am
replacing the VCMI/H2B with VCMI/H2C
1
reply
frequency bias setting of combined cycle plants
Posted by ancillary_guy on 6 November, 2012 - 12:36 am
to analyse the response of combined cycle plants operating on frequency influence
1
reply
Question about two-phase generator
Posted by Angel on 6 November, 2012 - 12:28 am
What is the correct answer of this question?
3
replies
Density meters
Posted by Rumple Stiltskin on 5 November, 2012 - 11:27 pm
Description of density meters required for the measurement of process fluid density.
1
reply
HOA1A2 Switch
Posted by PagoCruiser on 5 November, 2012 - 6:19 pm
Anybody seen an HOA1A1 switch?
2
replies
Auto Synchronization problem
Posted by Ayman on 4 November, 2012 - 9:21 am
synchroscope in HMI 180 degree different than the scope on GCPP panel
Cascade Control Problem
Posted by Niomhin on 4 November, 2012 - 9:12 am
cascade control system master controller question
2
replies
PLC/DCS scan time sync and problem
Posted by alwaysontravel on 4 November, 2012 - 6:16 am
It's always a dcs/plc fight, but I need some help right now
5
replies
Safety for a dial table indexer?
Posted by Escabara on 3 November, 2012 - 7:37 pm
A simple problem, but I'm not even sure where to begin. A dial table with operator interaction, and not sure what parts must be protected by an e-stop.
Tristation error when building program
Posted by Ahmed on 3 November, 2012 - 11:25 am
Errors when making modification to program on the tristation 1131.4.1
Guidelines for the no. of DCS operators
Posted by Jags on 2 November, 2012 - 6:29 am
Are there any guidelines for the no. of DCS operators?
9
replies
Velometer 5485C
Posted by Sadiya on 2 November, 2012 - 4:52 am
About signal conditioning of Velocity Sensor 5485C
Series 4 Compressor Control system (CCC) to S5V or S5M
Posted by non on 1 November, 2012 - 11:54 am
Could you please share your experiences about upgrading CCC Series 4 to S5V or S5M?
1
reply
Questions for implementing MODBUS using AVR
Posted by Javad babaee on 1 November, 2012 - 11:43 am
2 question regarding getting information from master using C++ and reading analog registers at the same time (I'm using AVR)
11
replies
Moog Servo Valve Operation
Posted by VK on 1 November, 2012 - 10:30 am
How does a MOOG servo valve operate?
MODBUS TCP/IP on WINCC
Posted by Muhammad Shoaib Ahmad on 1 November, 2012 - 8:23 am
wincc tag configuration and Modbus TCP gateway
Vortex Flowmeter
Posted by jadesola on 1 November, 2012 - 6:08 am
why are the minimum and maximum operating conditions for a Vortex Flowmeter the same?
Variable Frequency Drive
Posted by Mahesh on 31 October, 2012 - 10:21 pm
Using variable frequency drive and energy conservation
Reliability of Magnetic Level Switches (Reed)
Posted by OZI on 31 October, 2012 - 8:28 pm
Are external magnetic switches (reed type) reliable? Are they available with any sort of SIL rating?
6
replies
Communicator ABB AMD 230 Absolute pressure TX.
Posted by ashiq on 31 October, 2012 - 7:59 am
Communicator ABB AMD 230 Absolute pressure TX.
4
replies
Turbine tripped due to False start drain high temp
Posted by Kamel on 31 October, 2012 - 6:35 am
GT tripped due to False start drain high temp
BMS Master Fuel Trip Relay
Posted by Cheong Chun Yew on 31 October, 2012 - 2:31 am
For Burner Management System, there is Master Fuel Trip Relay required by NFPA 85.
5
replies
pole position detection
Posted by chandru on 30 October, 2012 - 11:43 pm
how to calculate the pole position?
1
reply
Export CSV data from Yokogawa Centum CS UNIX ICS
Posted by dinster on 30 October, 2012 - 8:51 pm
Need to know how to export data to CSV format.
1
reply
Power Management System (AGC, Load Shedding, AVR...)
Posted by Daniel Chamorro Mata on 30 October, 2012 - 8:34 am
Control architecture for generation plants.
4
replies
book for I&C
Posted by Hasan on 30 October, 2012 - 4:21 am
books for I&C engineer
Automatic Turbine Testing of steam turbine
Posted by sreeram on 30 October, 2012 - 12:53 am
Kindly explain me how servo mechanism responds to the ATT of steam turbine?
Benefits of Diode Oring
Posted by sus on 30 October, 2012 - 12:21 am
What are the benefits of Diode Oring?
Transformer Rating Conversion
Posted by khalid adhami on 29 October, 2012 - 4:56 pm
Converting ONAN (55 deg. C), ONAN(65 Deg. C), ONAF (65 deg. C) rating
11
replies
modbus TCP security
Posted by Tim on 29 October, 2012 - 3:19 pm
best practice to secure modbus TCP
3
replies
help with Q & A
Posted by Tim on 29 October, 2012 - 3:15 pm
working without a Q & A department
1
reply
Speed Control of DC motor
Posted by CAPTFRED on 29 October, 2012 - 11:34 am
speed control....DC..."PANCAKE MOTOR"
1
reply
Cable Trench
Posted by Rachit on 29 October, 2012 - 4:06 am
query regarding cable arrangement in a trench
4
replies
Modbus Multidrop
Posted by RavinderK on 29 October, 2012 - 2:40 am
Modbus multidrop communication
Steam Turbine Generator IPR protection
Posted by Habib on 29 October, 2012 - 1:29 am
How can we set STG IPR set point
14
replies
GAS LEAK TEST 9FA DLN 2.6+
Posted by JP on 28 October, 2012 - 2:56 pm
Questions about gas leak test for frame 9FA DLN 2.6+
1
reply
LM6000 PC Sprint Dry Weather Operation
Posted by Kevin Arnold on 28 October, 2012 - 1:46 pm
Dry weather operation on LM6000 PC Sprint
Temperature sensor/transducer
Posted by Shan on 28 October, 2012 - 9:11 am
Temperature Conversion by adding resistors
1
reply
Pressure Switch on a Fuel transfer pipe
Posted by Kamath RL on 28 October, 2012 - 6:18 am
What is the zone classification for a sensor installed on the fuel transfer line?
1
reply
Barton 202E Static Element/Linkage
Posted by ak40nine on 27 October, 2012 - 7:07 am
Need some clarification on doing calibration/squaring of linkages
All about Sensors - New issue of IFSA Newsletter
Posted by syurish on 27 October, 2012 - 6:37 am
New issue of IFSA Newsletter (ISSN 1726-6017), No.10, 2012 is now online.
Fail safe terminology
Posted by Pal on 27 October, 2012 - 3:51 am
Fail safe terminology - Can anybody explain what is meaning fail safe start command to DG set?
PID controller for a hydraulic turbine
Posted by kalil on 27 October, 2012 - 2:39 am
How does a PID controller work for a hydraulic turbine?
3
replies
Steam Turbine Generator GOV mode or Load limitter mode
Posted by henry on 27 October, 2012 - 1:08 am
STG AFC and Load LIMITTER CONTROL
Delta PLC and Wonderware Intouch
Posted by Valiantt on 26 October, 2012 - 3:15 pm
Help with interfacing Delta PLC with wonderware intouch?
4
replies
Mark V <C> Core Error
Posted by Desi on 26 October, 2012 - 6:09 am
QST DPM Timeout
11
replies
Conversion of torque into amps in synchronous generator
Posted by Chandru on 26 October, 2012 - 12:15 am
Conversion of torque into amps
3
replies
What is needed to measure: gauge pressure or absolute pressure
Posted by arocon David on 25 October, 2012 - 4:22 pm
For measuring hydraulic pressure of a high pressure pump, what do i need to measure: absolute or gauge pressure?
Transfer Function
Posted by mrnik on 25 October, 2012 - 8:30 am
Heat Transfer Function
Regarding CAN error on M340 Modicon PLC
Posted by rohitd on 25 October, 2012 - 7:58 am
The MODICON plc M340 canopen is going in to CAN error.
5
replies
Multiple Controllers in RSLogix5000
Posted by Kevin on 25 October, 2012 - 3:29 am
Anybody used multiple controllers on a single rack in RSlogix5000, any tips etc..
Solar Sensor Feedback
Posted by Ravi on 25 October, 2012 - 2:02 am
Need to connect solar sensor to receive feedback signals
2
replies
weg ac drive tripping
Posted by lutej on 24 October, 2012 - 4:56 am
weg ac drive tripping on voltage dips
11
replies
Busbar Differential Protection
Posted by Pal on 24 October, 2012 - 4:36 am
Busbar Differential protection for MV switchgear for 2 out of 3 (2/3) Incomer logic
6
replies
Mark V Gas Turbine control
Posted by veenak on 24 October, 2012 - 4:35 am
Dignostic Alarms in Mark V Gas Turbine control for Frame 6 machine and are persisting.
2
replies
High Exhaust Temperature Spread Trip
Posted by LTW on 24 October, 2012 - 3:59 am
Unit tripped on High Exhaust Temperature Spread during change-over firing mode from Premix to Piloted Premix.
MODBUS RTU Rs485 to Modbus TCP
Posted by Khatana on 24 October, 2012 - 12:22 am
required parameters for data access with modbus rtuRTU to TCP
2
replies
High Accuracy Pressure Transducer
Posted by arocon on 23 October, 2012 - 7:17 pm
Could anyone please suggest me high accuracy pressure transmitter for 0 to 200 bar, 4 to 20 MA output.
1
reply
help with opc and vb
Posted by jamie on 23 October, 2012 - 4:32 pm
siemens plc to opc to vb and back to another siemens plc
7
replies
Temperature Control In Combined Cycle Operation
Posted by EDMUND ADU on 23 October, 2012 - 3:50 pm
What is the advantage enabling Inlet Guide Vane temperature control in combined cycle operation?
4
replies
OPC for swipe card reader
Posted by Glen Geary on 23 October, 2012 - 2:01 pm
OPC for swipe card reader and barcode scanner
1
reply
Synchronization R, S and T Controller of Mark-VI
Posted by Shakarami on 23 October, 2012 - 12:40 pm
The T rack of the R,S and T Controller of Mark-VI does not synchron with the R and S racks.
2
replies
Loop Checking
Posted by xxxx on 23 October, 2012 - 10:46 am
Can I simulate 4-20ma signal to a loop powered device?