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Forum Archive eNews 25 April 2013
Posted by Jim Pinto on 24 April, 2013 - 9:24 pm
The latest - Connections for Growth & Success No. 313 - 25 April 2013 is on the web
Steam flow through valve
Posted by engineer on 24 April, 2013 - 10:45 am
Steam flow through a valve
Simulating a Turbine Generator
Posted by Dave on 24 April, 2013 - 10:42 am
Need some info on modeling AC generation.
Arcnet Distance Information Required
Posted by Shaiq Bashir on 24 April, 2013 - 6:17 am
Maximum allowable distance between a controller and an HMI station over arcnet cable.
Sliding mode control method
Posted by V.Rajeswari on 24 April, 2013 - 6:01 am
I want to know how to choose parameters for sliding mode control method
Air inlet DP high
Posted by G.Rajesh on 24 April, 2013 - 1:56 am
Air inlet greater than the alarm limit (180 mmH2O)
Core saturation of Electrical machines
Posted by Santanu Das on 24 April, 2013 - 1:03 am
Why does a core (say for ex of a transformer/or an alternator) saturate?
Emerson ControlWave Micro serial microwave radio
Posted by Billy on 23 April, 2013 - 11:56 pm
Controlwave micro comms
Educational simulator Master/Slave
Posted by pete_r61 on 23 April, 2013 - 8:33 am
Looking for an educational software simulator for modbus and/or CAN fieldbus system.
GTG starting clutches
Posted by Ayed on 23 April, 2013 - 5:53 am
We have in our gas turbine frame 7E a problem of failure to start due to starting clutch disengage.
Tuning of PID controler
Posted by Laijth on 23 April, 2013 - 3:32 am
Can somebody explain to me how to tune a flow control loop? And about integral time and gain?
Siemens V94.2 Gas Turbine Exhaust Temperature Measurement
Posted by Rokan Uddin on 22 April, 2013 - 3:52 pm
Looking for information on Siemens V94.2 Gas Turbine Exhaust Temperature Measurement
Air flowmeter
Posted by PEF on 22 April, 2013 - 12:13 pm
Where to get a flow meter either softwareless or qualified
current and voltage sources
Posted by ashu on 22 April, 2013 - 6:59 am
Difference between current and voltage sources
Turbine flowmeter error
Posted by Petre Popescu on 22 April, 2013 - 2:42 am
Turbine flowmeter reading much more than should be
Load Hunting on GE frame 7
Posted by Ahmad on 21 April, 2013 - 4:21 pm
Fuel and Load Hunting after Full speed and massive with generator breaker closed
equal percentage valve
Posted by stev on 21 April, 2013 - 1:24 pm
equal percentage valve ma signal
Digital Process Controller
Posted by Hassan Wahby on 21 April, 2013 - 10:52 am
Looking for a small digital process controller
GE servovalve moog G771K616
Posted by SALVADOR on 20 April, 2013 - 9:43 am
G771 Moog servovalve and a G123-825 buffer amplifier for a gas turbine.
BLDC transfer function from step response
Posted by eekks on 19 April, 2013 - 6:31 pm
hello, can anybody give me a method to work out the transfer function from a step response?
Interposing Relay Testing
Posted by Tim Ricketts on 19 April, 2013 - 11:45 am
Would you say that testing of interposing relays is important outside of the nuclear industry?
Iron in IP Boiler
Posted by dkguerry on 19 April, 2013 - 9:52 am
Iron in IP Boiler
Diffuser leakage
Posted by Searching on 19 April, 2013 - 5:44 am
Diffuser leakage
Why we kept synchronisation breaker separately for Gas turbines
Posted by sriram sandeep on 18 April, 2013 - 7:49 pm
Why we need to kept GCB as a synchronisation breaker for gas turbine instead of using the line breaker as like steam turbine..
GT Base Load to Full Speed No load
Posted by sriram sandeep on 18 April, 2013 - 7:44 pm
How to bring GT from Base load to Full speed no load manually??
Modbus TCP/IP communication Modicon M340 to GE PAC RX3i
Posted by Ali.R on 18 April, 2013 - 5:02 pm
We need to setup Modbus TCP/IP communication between "BMX NOE 0110" (Modicon M340 module) and "IC695ETM001" (GE PAC RX3i module).
Generation Cyber Security Training May 17th
Posted by Michael Toecker on 18 April, 2013 - 11:04 am
Cyber Security training for Power Generation Professionals, May 17th outside of Chicago.
Selection of Gas turbine for a combined cycle power plant
Posted by Suman on 18 April, 2013 - 2:24 am
Procedure for selection of gas turbine and steam turbine for a combined cycle power plant.
Posted by MAZHAIARASAN on 17 April, 2013 - 9:20 pm
GasBooster compressors could not be started after a sudden dip in grid. Thrust pads of High speed shaft in gear box completely damaged. Compressor bearings found no damage. Is there any chances of Antisurge valve malfunctioning?
What to do when the outgoing line breaker trips?
Posted by Stephen on 17 April, 2013 - 5:42 pm
what are you to do when outgoing line breaker trips
Mk6b control status
Posted by ESKAY on 17 April, 2013 - 1:54 pm
Mk6b control status. status is showing minor difference.
Importance of "ENGLISH" in Automation Engineering
Posted by Rushi Shroff on 17 April, 2013 - 2:23 am
proficiency on ENGLISH language for Automation
Defining a critical instrument
Posted by cheers73 on 16 April, 2013 - 11:51 pm
Is there a standard methodology to identify critical instruments?
Analog I/O Module - What can be the fault?
Posted by Roy on 16 April, 2013 - 5:22 pm
What can be the fault in analog I/O module
Cybersecurity - Product or Service?
Posted by Jim Pinto on 16 April, 2013 - 12:26 pm
"Cybersecurity - Product or Service?"- published by Automation World, April 2013
Modbus protocol function codes
Posted by Vatsal Trivedi on 16 April, 2013 - 6:44 am
Need Information about function codes from 30 - 40
Back Pressure Control Mode In Toshiba steam turbine D-EHC control system
Posted by Mohamed Salem on 15 April, 2013 - 4:45 pm
What is the Back pressure mode in Toshiba steam turbine ?and what is the running condition for this mode?
Flow capacity of a Valve
Posted by André Roussey on 15 April, 2013 - 4:27 pm
Flow capacity of a Valve when changing the maximum flow
SIL2 System Design using Control Logix
Posted by Warhawk on 15 April, 2013 - 12:30 pm
SIL2 System Design
Wonderware InTouch Alarms
Posted by Tommy Tollin on 15 April, 2013 - 9:59 am
How an alarm could not be displayed when the bit is reset and the alarm is off
MK-V Date-Time in Historian
Posted by mhwest on 15 April, 2013 - 8:57 am
I would like to add the MK-5 Date and Time to a historian.
Tapping points for different processes
Posted by AB on 15 April, 2013 - 6:37 am
Trying to work out tappig points.
Mark VIe PDIO Failures
Posted by Shabbir on 15 April, 2013 - 3:44 am
Mark VIe PDIO cards failing very frequently. We are looking for a company to conduct an RCA on the failures and provide corrective actions to minimize/eliminate failures.
YSF6 Switchgear VT
Posted by Kiwifrank on 14 April, 2013 - 10:37 pm
We are derating a 22kV YSF6 panel to 11kV. We need 2 x 11kV/110V SQRT3, 3p, class 0.5 50VA busbar mounted VTs. Anyone know we can get some
Hazardous Area Certificate for Mechanical Equipment
Posted by OZguy on 14 April, 2013 - 4:31 pm
We are installing a multi turn pneumatic actuator for a gate valve, which runs on hydrocarbon gas. Do we need a hazardous area certificate for the rotary actuator?
Motor power maximum
Posted by Mohamad Nazzal on 14 April, 2013 - 7:26 am
what is the accepted margin between motor power and pump-maximum power?
Modicon 200 I/O
Posted by Joshua on 14 April, 2013 - 6:09 am
Modicon Quantum PLC with 200 I/O as remote I/O
ABB ACS800 VSD Profibus DP to Yokogawa Centum VP
Posted by Lee McCartney on 13 April, 2013 - 5:43 pm
Having problems reading all the required words into Centum.
Rockwell 1747-OC Open Controller
Posted by Hans Muller on 13 April, 2013 - 12:29 pm
Need to know who is supporting a more than 10 years old obsolete system from Alan Bradley / Rockwell
Posted by Sakram on 13 April, 2013 - 12:09 pm
RTD PT110 and PT10 connection to DCS RTD Module in Yokogawa Centum VP.
Instrument couse for Construction
Posted by mahnmooud on 13 April, 2013 - 11:51 am
I'm working in the instrument construction field, i would like to ask all of you if somebody knows some cources can increase our skills?
Recycle Valve control from remote location
Posted by ZHAK on 13 April, 2013 - 11:32 am
We want to control recycle valve of a compressor installed at remote site from Main control room 50KM away.
When 2 out of 3 poles of the circuit breaker of a Generator are closed
Posted by Santanu Das on 13 April, 2013 - 11:04 am
What will happen when 2 out of 3 poles of a 220 kv circuit breaker of a 330MVA Generator (of a steam power plant) is closed and one open when the generator (via GT) is connected (or synchronized)with 220kv bus?
SCADA to powerpoint
Posted by ashu on 13 April, 2013 - 6:38 am
SCADA to PowerPoint communication
PLC project
Posted by erin on 12 April, 2013 - 11:08 pm
Working on Project. Still in idea stage. Got one, but not sure if within the realm of reality considering my abilities...Just looking for someone experienced to yes or no whether this would work.
Gas turbine control
Posted by Bita on 12 April, 2013 - 12:04 pm
Gas turbine fuel control
Vibration Sensor Output
Posted by gsh on 12 April, 2013 - 8:08 am
why vibration sensors output is adjusted for -10v for different sensitivity sensors?
Lube oil filter on GE Frame 9FA
Posted by ashutosh on 12 April, 2013 - 6:12 am
The lube oil filter on GE Frame 9FA machines only works when we are opening the 1/2" Filter drain valve.
load rate (stag ms9001fa)
Posted by koukos on 11 April, 2013 - 11:50 am
Behavior of a power plant when its load rate (stag ms9001fa) drops.
How to create password in Rs View SE SCADA
Posted by Rockwell on 11 April, 2013 - 10:01 am
How to create password in Rs View SE SCADA
HMI for Purge Panels
Posted by psingh on 11 April, 2013 - 5:38 am
HMI suitable for Purge Panels (Class 1 Div2)
Honeywell Enraf Data Disappearnce
Posted by SB on 11 April, 2013 - 3:04 am
Enraf data display suddenly disappears.
Posted by umair on 11 April, 2013 - 3:00 am
When temperature fluctuates the level goes beyond correct level giving some peaks. How to control the level even if the temperature changes?
custody flow meter
Posted by ars1981 on 10 April, 2013 - 5:44 pm
custody flow metering
Mavilor MO4500 Servo motor
Posted by Sergey Chekh on 10 April, 2013 - 1:53 pm
Info for Mavilor MO4500
Oil floating in the bearing drain enlargement
Posted by Lead plant engineer on 10 April, 2013 - 6:51 am
Reasons for oil floating in the bearing drain enlargement
encoder count wrapping
Posted by satyan on 10 April, 2013 - 2:32 am
Can any one help for coding encoder counts wrapping?
Converting XBT-L1000 to Vigeo Designer file
Posted by Jack on 9 April, 2013 - 6:39 pm
Can a XBT-L1000 file be converted to a Vigeo Designer file?
Crouzet Millenium II programming cable
Posted by Karl on 9 April, 2013 - 6:14 am
Crouzet Millenium II XT20 controller programming cable missing-
OPC Server for Honeywell Total Plant Alcont - TDC3000
Posted by Shahab Ahmad on 9 April, 2013 - 3:27 am
I want to communicate with Honeywell Total Plant Alcont - TDC3000
Honeywell Experion R410
Posted by geemul on 9 April, 2013 - 1:20 am
Legacy .dsp graphic files in R410
Release dates of DCS
Posted by tq_ice on 8 April, 2013 - 5:08 pm
Age of DCS systems
Modbus concurrent access
Posted by dotfix on 8 April, 2013 - 7:25 am
parallel reading registers using different ports
iec 60870-5-101 communication
Posted by shine on 8 April, 2013 - 12:00 am
Connecting Emerson DCS with ABB IED with iec 60870-5-101 protocol.
Temperature compensation for level sensing technique
Posted by praveen on 7 April, 2013 - 3:35 pm
Temperature compensation for density variation of air in hydrostatic measurement
deltav device control
Posted by edris on 7 April, 2013 - 10:35 am
difference between the command with 'discrete output function block' and the 'device control function block'
Electronic Energy meter
Posted by Santanu Das on 7 April, 2013 - 1:34 am
Does an electronic blinks (though the pulse rate is too low, about one pulse in 8-10 min, in a rated 3200pulse/kwh meter) even when i am not consuming any power at all?
24VDC power supply fuse protection
Posted by Sakram on 6 April, 2013 - 3:39 pm
24VDC Floating power supply fuse protection.
Cable Voltage Rating
Posted by Rashid Iqbal on 6 April, 2013 - 2:10 pm
Internal Panel Wiring Cable Voltage Rating
Advice on how to reach Oil & Gas industry
Posted by Rafluska on 6 April, 2013 - 7:27 am
I'm trying to find a way to go to work on an Oil plant.
Drum level measurement
Posted by bimal on 6 April, 2013 - 5:17 am
drum level transmitter connection
Modbus Exception 0x04
Posted by syefano sormanni on 6 April, 2013 - 1:48 am
Modbus RTU Error 04H
Finding Min and Max in AB SLC 500
Posted by papaya72 on 5 April, 2013 - 2:24 pm
Looking to find Minimum and Maximum values from a series of Register values.
temperature and velocity control of sandy air in duct
Posted by khan on 5 April, 2013 - 7:54 am
I need some help with selection of air velocity and temperature sensors & actuators that will work on hard environmental conditions inside the air-duct.
Modbus request/response timing
Posted by suprita on 5 April, 2013 - 6:07 am
Rate for sending Modbus requests to slave and the timing for request/response
Frame 9E gas Turbine Axial probe
Posted by Chandra on 5 April, 2013 - 5:02 am
How to adjust 96VC axial probe after a major outage?
Loss of communication with PCU
Posted by Khawaja Aniq on 5 April, 2013 - 1:09 am
how to resolve Outage of data of the PCU for 1 to 2 minutes and automatic resumption to normal operation.
Alarms in frame V machine in <R> core (L39VF12, L39VF8 and etc)
Posted by NVS on 4 April, 2013 - 12:36 pm
Diagnostic Alarms in frame V machine in <R> core (L39VF12, L39VF8 and etc)
All about Sensors
Posted by syurish on 4 April, 2013 - 9:41 am
New issues of IFSA Newsletter and Sensors & Transducers journal have been published
Difference between DCS and SCADA
Posted by Rushi Shroff on 4 April, 2013 - 8:54 am
What's the difference between DCS and SCADA systems?
DC Soft Start
Posted by c_1 on 3 April, 2013 - 3:01 pm
DC Soft Start Ideas
Twido with Modbus/TCP
Posted by 12add3 on 3 April, 2013 - 10:35 am
Extend Twido PLC for Modbus/TCP communication
Posted by KIRAN on 3 April, 2013 - 10:12 am
Up to how much low rpm can a BLDC motor be designed?
modbus TCP protocol
Posted by raghavendra on 3 April, 2013 - 8:29 am
Is Modbus a synchronous or asynchronous protocol?
Posted by Chris Keith on 2 April, 2013 - 4:31 pm
Control Techniques Multi Axis Application
DeltaV Newbie Needs HELP
Posted by Jo-NathanBSCHE on 2 April, 2013 - 4:09 pm
Desire to speed up Drawing
Need Technical Detail of Energized Cable Sensing Device
Posted by nagarajan on 2 April, 2013 - 3:01 pm
we are having 15 number of Ring main units with Schneider 11kv,RE2c type.we need a detector which will detect from outside of cable, we are using trefoil 630 sqmm xmpl cable.Any sensor's available,just we need to know which RMU's powe
how to download software to number of plc at once
Posted by Shimon Flaishman on 2 April, 2013 - 11:21 am
I have a system with multiple AB micrologic 1400 plc's that are runing the same program. how can I download an updated program to number of plc's at once? 10, 20 or more.
Problem with fc16 using Nmodbus
Posted by Subbu on 2 April, 2013 - 5:42 am
Need help with using FC-16 using nmodbus library
Choosing an encoder and a PLC for a high-precision rotary table
Posted by Yegor on 2 April, 2013 - 12:19 am
I need to choose an encoder and a PLC to make a rotary table that could be positioned with precision of about 60 arcseconds.