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Forum Archive
Synchronous Generator Power Factor
Posted by samsan on 27 March, 2015 - 2:36 pm
Steam Turbine Generator & Power Factor
MODBUS Comunication with RS485 on ST-200
Posted by gene89 on 27 March, 2015 - 12:01 pm
Communication between PLC and PC via Modbus, using a network interface to transport the rs485 via TCP/IP.
Excitation Problem
Posted by Abdullahi Abdu on 27 March, 2015 - 11:29 am
After excitation limit alarm, unit tripped due to uncontrollable drum level.
Siemens LOGO 12/24
Posted by mickblu on 26 March, 2015 - 8:18 pm
I need some advice / info from an experienced user / programmer of the Siemens LOGO 12/24
Variation of Auxiliary Power Demand of a Typical Coal Based Steam Plant from Start up to Full Load
Posted by pikachoo99 on 26 March, 2015 - 2:51 pm
variation of auxiliary power demand of a steam unit with time as the unit is loaded from zero to full load
Operating GE 9E on DLN Mode with Liquid Fuel
Posted by mechaniclese_2010 on 26 March, 2015 - 2:06 pm
For All GE experts, why is the liquid fuel mode operated only at lean lean mode?
Centum VP: Graphic builder: Object Properties
Posted by Gregor007 on 26 March, 2015 - 4:18 am
Design a new graphic with the Centum VP graphic builder: I want to change the properties of an object, but "Properties" window doesn't open.
Mark-VI VCMI Card Alarm
Posted by killkss on 26 March, 2015 - 3:53 am
Mark-VI VCMI Card Fault Alarm (code: 57,67)
Pressure Transmitter for Nuclear Station
Posted by garychenca on 25 March, 2015 - 8:48 pm
Looking for recommendations for pressure transmitters for a nuclear station.
SIF Testing
Posted by Cheetahsan on 25 March, 2015 - 8:15 pm
Organizing SIF Testing to be efficient and effective
HMI Crashing
Posted by saiful_32 on 25 March, 2015 - 2:16 pm
HMI has crashed for GE Frame 9E turbine
AC Machine
Posted by passionman on 25 March, 2015 - 1:26 pm
Trying to Understand AC Machine Fundamentals
Pump Transfer Function
Posted by ggrasmus on 25 March, 2015 - 6:56 am
Having trouble finding a transfer function for the flow of a pump so that I can tune the PID controller.
Transferring 32 bit Data Via MODBUS Protocol
Posted by vutq on 25 March, 2015 - 4:19 am
Transferring and receiving 32 bit MODBUS data using SCADA
Woodward 4024 Actuator Model 8256-060 Testing/Repair
Posted by jackS on 24 March, 2015 - 1:02 pm
Obsolete Woodward 4024 Actuator Model 8256-060 Testing/Repair
Use of Technology in Manufacturing in India
Posted by Kelly Gronquist Schwerdt on 24 March, 2015 - 11:53 am
Technology has been an integral part of each stage of manufacturing in India from the planning of the future, to resource planning, to production, thereafter getting into distribution & reaching the end customer
Thermal Dispertion Flowmeters
Posted by Darker on 24 March, 2015 - 12:52 am
Thermal Dispersion Flowmeters, Principle
Dry Contact and Hermetically Sealed Switches
Posted by DiazA on 23 March, 2015 - 9:02 pm
Where does one need to use a dry contact switch and when do you need to use a hermetically sealed switch?
Migrating Experion/C300 On-Process with Non-Redundant IOMs
Posted by mriksman on 23 March, 2015 - 10:48 am
Keeping the process online, whilst performing offline migration to IOMs
Using Remote Seal Level Transmitter in Evaporative Tank
Posted by Joemari Carpio on 23 March, 2015 - 6:41 am
Can I use emote seal type level transmitter to measure level of sugar in evaporator tank?
9E DLN1 - Fail to go Premix Transfer
Posted by kumara on 23 March, 2015 - 2:33 am
Frame 9E unit starts normally, but going from liquid fuel transfer to gas transfer unit goes into extended lean lean.
DH485 to RS232 Communication
Posted by tyrantb on 22 March, 2015 - 11:01 pm
Using RS232 to DH485 for communicating 5/03 AB PLC to Laptop.
MODBUS Communication Between S7 PLC and National Instrument Master Software
Posted by rnarias on 22 March, 2015 - 7:57 pm
Cannot get MODBUS communication going between National Instrument master and S7. Is it a hardware problem?
Water Injection in Thermal Plants
Posted by Senecaster on 22 March, 2015 - 1:56 pm
How does the water injections i thermal plants affect the enviroments
Conditions for Synchronization (Phase Sequence or Phase Rotation)
Posted by WATT on 22 March, 2015 - 4:16 am
Are their any instruments to detect the phase sequence (R-Y-B) of Electrical Power System?
Type K Thermocouple Failure
Posted by journeymanj on 21 March, 2015 - 11:34 pm
Many thermocouples failing. Looking for causes and solution.
Lubrication of Motor Bearings
Posted by thiagusriram on 21 March, 2015 - 9:02 pm
Looking for information on lubrication of motor bearings.
MODBUS RTU Communication between PLC and Endress Promag 53
Posted by Matt on 21 March, 2015 - 1:55 pm
I am trying to setup a communication to the Endress Promag 53 flowmeter
Formulas for Calculating BLDC Motor specs
Posted by rosesh on 20 March, 2015 - 7:34 am
I want to know specs of BLDC motors and Battery bank ratings required for my Electric car project.
Transfer Orders from HMI to PLC
Posted by KHC on 20 March, 2015 - 4:57 am
How can I save order data in PLC (Siemens S7-300) from HMI (Siemens TP177B)? What is the best way to do this?
Need Non-Contact Displacement Sensor
Posted by Robert Scott on 19 March, 2015 - 11:28 pm
What non-contact sensor can I use to measure displacement of a very light item?
Galaxy Tags in Wonderware
Posted by ckeith60 on 19 March, 2015 - 6:17 pm
Wonderware - Galaxy versus Access Names for IO Interface
Cimplicity Broadcast problem?
Posted by Razvan on 19 March, 2015 - 8:57 am
I can't see the project name in the client viewer.
Program Instruction for Mitsubishi PLC
Posted by hardikmehta on 19 March, 2015 - 8:27 am
Can anyone tell an instruction for Mitsubishi PLC to run up to 128 o/ps all at single I/P and on single time?
0-5k ohm or Hall Effect Sensor on KNX or MODBUS
Posted by pigbite on 19 March, 2015 - 4:46 am
Trying to find a device that will read a 0-5k ohm signal or a hall effect signal from an encoded motor
UV Flame Detector Working - Honeywell -LG1093AA
Posted by kichaa on 19 March, 2015 - 4:28 am
Is my interpretation about the working of Flame scanner installed in GE Gas turbine correct or not?
Density and Flow Measurement
Posted by mason on 19 March, 2015 - 12:38 am
Not advertising China reliable Coriolis Mass Flow Meters and Direct Insertion Density Meter
2-sided Imaging on a Conveyor
Posted by cbox83 on 18 March, 2015 - 10:44 pm
Seeking options for 2-sided imaging of flat product max 14" wide
Communication Problem between MODBUS RTU and Siemens PLC
Posted by rnarias on 18 March, 2015 - 10:44 am
Hardware problem communicating S7 200 to PC using MODBUS RTU
PID Parameters for 505 Control Turbine
Posted by hoangbao on 18 March, 2015 - 9:41 am
Need help on how to set PID control parameters for Woodward turbine governor, 505 control turbine.
GE Frame 9FB Air Intake
Posted by TOral on 18 March, 2015 - 8:46 am
Air filtration using inlet hood bypass system
Correct Cable for PT-100
Posted by theSiemExpert on 18 March, 2015 - 4:55 am
2 cable connection or a 3 cable connection for PT-100?
Brush Generator Terminal Voltage Getting Low
Posted by uj on 18 March, 2015 - 1:03 am
Brush generator voltage getting reducing form 10.6kv to 10.3kv @ FSNL.
Cimquest Studio 32bit
Posted by quadzer on 17 March, 2015 - 10:26 pm
Cimquest Studio 32Bit Enet VB6 HMI Serial
PLC master File with Descriptors
Posted by PrasadVe on 17 March, 2015 - 2:18 pm
How to make PLC backup in rslogix with comments
Communication between Microcontroller (Master) and Schneider Drives (slaves)
Posted by malampati on 17 March, 2015 - 12:48 am
Question about MODBUS communication from the micro controller to Schneider drives using MODBUS RTU communication.
Reprogram Fault in Allen Bradley PLC
Posted by wazid_27 on 16 March, 2015 - 3:20 pm
Reprogram Fault (F-48) in Allen Bradley 1336 BRF-50 VFD.
Analog Input of Heater Fluctuating
Posted by GlennAvans on 16 March, 2015 - 4:57 am
The analog input of the heater is fluctuating with +/- 1000. What could be causing the problem?
Voltage Limitations for Synchronous Generators
Posted by krigl on 16 March, 2015 - 3:45 am
what will happen to a synchronous generator if it operates at lower (or higher voltage) than 5% of its rated voltage over a long period?
Toolbox and Workstation in MarkVIe
Posted by John on 15 March, 2015 - 12:38 pm
Difference between Workstation and Toolbox in MarkVIe.
Increasing Excitation of an Isolated Alternator Feeding a Resistive Load
Posted by Shahvirb on 15 March, 2015 - 11:08 am
Effect of increasing excitation on terminal voltage and load current of an isolated alternator feeding a purely resistive load.
DC to DC converter
Posted by fuddy on 15 March, 2015 - 3:28 am
DC generator with variable 90-16 vDC output requiring conversion down to 24 vDC
DC Water Pump Control
Posted by Shuag on 14 March, 2015 - 4:40 pm
DC Water Pump Control with Siemens S7 1500 PLC
Engagement of Turning Gear after Overhaul
Posted by shad786 on 14 March, 2015 - 10:08 am
Unable to engage the turning gear after overhauling of LP turbine
200 Volt Motor
Posted by keith123456 on 14 March, 2015 - 8:39 am
200 volt duplex air compressor
IP Address Conflict on Ethernet Network between ControlLogix Controllers
Posted by bqadri on 13 March, 2015 - 11:54 am
IP address conflict between two controllers. How to resolve?
Migration from CS3000 TO CENTUM VP
Posted by SRINI on 13 March, 2015 - 8:38 am
Annoyed for having to think of migrating to Centum VP just because Dell has stopped manufacturing XP compatible Workstations.
Condenser Vaccum
Posted by kk1989 on 12 March, 2015 - 3:26 pm
Let me know about keeping vacuum inside condenser? Why it is needed and how we create it?
Fluctuation of Generator Parameters During Low Demand Period
Posted by MakBan on 12 March, 2015 - 7:44 am
What is causing the fluctuation of some of the generator parameters during low demand period?
KepServerEx v4.5 and Windows 7 Issue
Posted by Oleksandr_Husyev on 12 March, 2015 - 7:21 am
KepServerEx v4.5 on Windows 7 SP1 32 bit doen't work under account with User rights or even Experienced User rights.
Synchronous Generator and Power Grid Failure
Posted by synchro on 12 March, 2015 - 6:23 am
what is the problems for a synchronous generator during a grid fault?
Brushless Capacitor Excited Alternator
Posted by electrical engineer on 12 March, 2015 - 2:47 am
What happens when a 2 pole brushless capacitor excited single phase alternator is run at 2600 rpm rather than 3000 rpm?
Load Capacity of RS485 Driver
Posted by viks on 12 March, 2015 - 2:32 am
Simple accessory for testing the RS485 driver load capacity.
Cheap Displacement Measurement Sensors
Posted by normad on 12 March, 2015 - 2:11 am
Looking for a inexpensive displacement measurement sensor with a 200~300mm range and about 0.2~0.3mm resolution.
PG6581B Operating in IGV Temperature Control Mode
Posted by rudillus on 11 March, 2015 - 1:59 pm
I am operating a two in one combined cycle plant with 2 GE PG6185B turbines. Clarification needed on part load, base load and peak load operations.
InTouch Report Using MS Access
Posted by Apostolos on 11 March, 2015 - 6:53 am
Creating an InTouch report using MS Access. How to connect with MS Access.
Keeping Constant Net Power of the Plant.
Posted by skchp on 10 March, 2015 - 7:44 pm
if efficiency of compressor decreases because of fouling or whatever, how the control system will keep constant the net power?
High Leg Open Delta Calculation
Posted by goku90504 on 10 March, 2015 - 6:14 pm
Trying to calculate transformer sizes for high leg open delta
24VDC Grounded or Floating
Posted by Tharani09 on 10 March, 2015 - 2:23 pm
24VDC floating or grounded for Digital Input module.
Motors Tripping on RTDs
Posted by UG on 10 March, 2015 - 9:40 am
Erroneous tripping of Motors on Winding RTD's within less than a second of the start up.
WinCC Flexible Stored Procedures SQL
Posted by Ryan Gerber on 10 March, 2015 - 9:28 am
I need help with a VBS file in WinCC Flexible 2008
Location of RF Filter
Posted by A A Viegas on 10 March, 2015 - 8:04 am
Where to place RF filter in the Cabinet for the Mains Power 230 V AC?
Proper Cable for 4 - 20 mA Analog Signal
Posted by shabirahmedks on 10 March, 2015 - 5:09 am
Can we use twisted pair, stranded bare copper cable for 4-20mA analog signal?
Thesis on Timed Controller
Posted by chudy on 9 March, 2015 - 12:07 pm
Thesis topic on flow divider unable to rotate while transferring from gas to distillate fuel on a dual fuel system.
Pump ON/OFF Control P&ID symbols
Posted by jkate on 8 March, 2015 - 5:18 pm
I'm looking for the information on the correct way to show pump control on a P&ID.
STG Condenser DP Type Level Transmitter Issue
Posted by KSHAH on 8 March, 2015 - 3:17 pm
Our combine cycle power plant is facing problem in STG condenser level transmitter. we have DP type level transmitter with condensate pot. We have 260MW four STG available at our plant.
Reducing Flame Intensity
Posted by abdi on 8 March, 2015 - 11:08 am
Can flame intensity reduced?
Visual Studio HMI with RSLogix OPC Server
Posted by andersonleal76 on 7 March, 2015 - 2:11 am
Please someone could help me with visual studio application for RSLogix 5000.
Problem Between ABB DCS and GE Mark V Gateway
Posted by Fabrizio86 on 6 March, 2015 - 3:29 pm
Connection Problem between GE Mark V Gateway GSM.exe and Driver Mark V Power Generation Portal DCS ABB.
PLC Tonnes Accumulator
Posted by Chris IWO on 5 March, 2015 - 8:35 pm
PLC LM 90 70 Accumulator/Totalizer
Loading OPC Tags in MARKVI
Posted by Anbu on 5 March, 2015 - 4:07 pm
Accessing and loading OPC tags from Mark 6 HMI
Ground and Common sizes
Posted by ChuckyIII on 5 March, 2015 - 12:40 pm
I'm looking for basic knowledge regarding wire sizes.
Turbine Compartment Hazardous Gas Detector 5A
Posted by msalem73 on 5 March, 2015 - 10:47 am
Turbine compartment Hazardous gas -Ve reading in high load
APS 5000/TDC 3000 History Module Replacement
Posted by mohid on 4 March, 2015 - 11:53 pm
History module bad sector encountered on Yamatake APS5000/TDC3000 DCS and needs replacement.
PLC Upgrade
Posted by CanTech on 4 March, 2015 - 3:00 pm
What do you think about converting a PLC Code?
Using Toolbox SDB Client API
Posted by japz87 on 4 March, 2015 - 2:24 pm
Has anyone here used the Toolbox SDB Client API to develop an SDB client?
Cathodic Interference of Conductivity Instrument
Posted by GregMcCrea2 on 4 March, 2015 - 10:35 am
Stray voltage in pipe causing error in conductivity instrument.
SCADA Communication between Mitsubishi FX0N-40MR-ES and Schneider IGSS 11.0
Posted by locklec on 4 March, 2015 - 3:10 am
Newbie Frustration - looking for SCADA education and help.
Using IBM Maximo in Data Analysis for Preventive Maintenance
Posted by Kei on 3 March, 2015 - 8:34 pm
IBM Maximo has the function for analysis on sensor value, for example, in order to detect faults early?
Best Book on Generators
Posted by floyd699 on 3 March, 2015 - 6:27 pm
is there a good book that primarily focuses on generators?
Slurry Level Measurement
Posted by ahmedhelmy87 on 3 March, 2015 - 4:38 pm
I'm searching for suitable method for measuring slurry level inside process tank
Controller fault on Logix5571
Posted by KevinO on 2 March, 2015 - 2:30 pm
Need help dealing with fault caused by communication loss between main ControlLogix rack and PLC5 racks
Posted by bil07 on 2 March, 2015 - 1:50 pm
C LCC display toggling between "A7" & "DCC ERROR"
Atomizing Air 9001E
Posted by bil07 on 2 March, 2015 - 12:18 pm
Removing system Atomizing Air in Frame 9001E
Complaints of GCV Oscillating but Calibration and LVDT OK
Posted by topcat on 2 March, 2015 - 8:20 am
Customer complaining that that the GCV is oscillating. The calibration and LVDTs seem OK.
Bentley3300 XL Ceramic Capped Probe Malfunction
Posted by Hassan on 2 March, 2015 - 2:50 am
Bentley3300 XL Ceramic Capped Probe malfunction causing trip of the machine. The electrical connections checked and found okay.
SLC 500 Programming
Posted by bowilly on 1 March, 2015 - 5:46 pm
Need a refresher on data manipulation
Small Gas Turbine Powered By Wood Dust
Posted by James Lam on 1 March, 2015 - 12:45 pm
Building a small brayton gas turbine powered by wood dust, using off-the-shelf industrial machinery and components.
Antisurge Algorithm for Centrifugal Compressor
Posted by chetanhm2 on 1 March, 2015 - 10:53 am
Antisurge control for centrifugal compressor with variable speed: Algorithm implementation in Unit Control Panel
Problems Disconnecting Generator from Grid
Posted by Yyyackums on 1 March, 2015 - 7:21 am
Trying to power up a generator head via the grid and then disconnect generator from grid