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Forum Archive
Controlling Valve Outputs Connected to Step 7 via PROFIBUS
Posted by abebeke on 26 May, 2015 - 10:41 am
how to control festo cpv-10 Dl02 connected profibus with s7 300 & 315-2DP cpu?
Increasing Power in Synchronous Generator
Posted by Hothifah on 26 May, 2015 - 6:28 am
We have a STG the output power is 26 MW I need to increase it to 31.2 MW
Conductor NT 6.0 Compatibility
Posted by Chris_IWO on 26 May, 2015 - 1:25 am
ABB Conductor NT V6.0 Compatibility With windows 7 Pro 32bit
High Discharge Temperature of Gas Turbine Atomizing Air Compressor
Posted by AW on 24 May, 2015 - 9:09 pm
we are operating two frame 5 gas turbines having power output of 18MW. Recently we restored the compressor on one of our turbine. After start up the discharge temperature of AA compressor reached to 190 degree C.
Offset Error Rosemount 1056 Analyzer with 3900VP pH Probe
Posted by roundyroundy on 24 May, 2015 - 5:48 am
Attempted to calibrate the analyzer. Offset error of 110 mV with a max possible 60 mV. Verified probe good with known functional analyzer.
GE Gas leak Test Pass/Fail
Posted by Controlquest on 24 May, 2015 - 2:28 am
How are the requirements/constants for passing or failing a gas leak test calculated?
Speed Pickup vs Frequency Transducer for Speed Signal
Posted by delirios on 23 May, 2015 - 3:18 pm
Based on your experience, which sensor/signal is better for speed control in a generator, a speed pickup or a frequency transducer?
Siemens PCS7 Server Healthy Status Issues after Changes
Posted by kabilan on 23 May, 2015 - 10:52 am
After updating PCS7 network and Server/client status updating, but server not show healthy status.
MEGAC and Fuel Gas Valve Control
Posted by zaidhrm on 23 May, 2015 - 9:45 am
Looking for information about MEGAC and fuel gas valve control of turbo-generator
Problem Communicating with Siemens G120 Drive Using MODBUS
Posted by malampati on 23 May, 2015 - 8:55 am
Problem when writing to control word register for Siemens (SINAMICS G 120) drive using MODBUS
Connecting To and Reading From TCP/IP MODBUS Unit
Posted by Simon Pearce on 23 May, 2015 - 12:20 am
How to set up and read from MODBUS registers over TCP/IP
AutoConfig Software Connection Bug
Posted by ControlThis420 on 22 May, 2015 - 7:45 pm
*Seeking Advice* ThermoScientific's AutoConfig SW will not show the Com1 & Com3 select option under the communication parameter window.
SCADA for Electrical Metering
Posted by supra33202 on 21 May, 2015 - 2:17 pm
Looking for a SCADA system for electrical metering
Coding Using LQR for Synchronous Generator
Posted by Engr Muhammad Zubair Ali on 21 May, 2015 - 1:12 pm
Need advice about coding using LQR for modeling and control of synchronous generator
Purge Inlet and Control Temperature
Posted by zaidhrm on 21 May, 2015 - 9:00 am
Purge of inlet flow indicator and control temperature
KNX Gateway to Ethernet
Posted by Kataeb on 21 May, 2015 - 5:17 am
need gateway to link KNX network to ethernet network
Rectifier from 120Vac to 125Vdc
Posted by isaacluna on 20 May, 2015 - 4:47 pm
I'm trying to obtain 125Vdc from a 120Vac OR other way of obtaining 125Vdc from a power generator of 3kW
Understanding Blower Ratings
Posted by PaulKraemer1 on 20 May, 2015 - 4:41 pm
When a blower is rated for ____ CFM @ ___ SP @ ____ RPM, where is the static pressure measured?
False Start Drain Thermocouples
Posted by AhmedWaleed on 20 May, 2015 - 6:03 am
The purpose of the false start drain thermocouple sensors (WWTD-1, WWTD-2 in Frame 9E?
Transformer - TX Abbreviation
Posted by Peter on 20 May, 2015 - 5:54 am
What does the TX stand for in transformer abbreviation?
DCS Communication by Modem/Internet
Posted by tri wibowo on 20 May, 2015 - 2:39 am
Communicating to SUPCON DCS with GSM Modem over a 15 Km distance
Frame 9E Cooling Water System
Posted by kumara on 20 May, 2015 - 1:07 am
Frame 9E Cooling Water System - Flame scanner overheating & Aft support legs temperature high
Communication Term Analogies
Posted by supra33202 on 19 May, 2015 - 7:27 pm
I am trying to find analogies for the communication terms.
Unit Failing to Synchronize to the Fystem
Posted by Piki on 19 May, 2015 - 10:02 am
In a 1MW mini hydro with two 5ookW units, the station operates in islanded mode. Lately synchronizing using unit 2 is a problem, because immediately you start the voltage will keep rising.
Faulty Readings on my Power Meters
Posted by Piki on 19 May, 2015 - 9:49 am
One power meter on the outgoing line control panel giveing less than half of the correct power output
Westinghouse WDPF
Posted by malibuvan on 19 May, 2015 - 8:01 am
Westinghouse WDPF controller sporadically drops off the highway
Fault When Using Two S7 Redundant CPUs
Posted by gajoshi17 on 19 May, 2015 - 1:34 am
Redundancy fault when using two Siemens S7-400H
Posted by RetiredGoblin on 18 May, 2015 - 7:28 pm
It would be interesting to know the interface between a (GCP), (PMS) and DCS.
MODBUS TCP vs IEC 61850 for Switchgears and Substations
Posted by Automata77 on 18 May, 2015 - 3:26 pm
Looking for a comparison between MODBUS TCP vs IEC 61850 for switchgears and substations
Starting Clutches of GT Frame 7E
Posted by Ayed on 18 May, 2015 - 1:06 pm
We have failure in our gas turbine's starting clutches
MODBUS Software to Scan All Possible Addresses
Posted by Rafa Angel on 18 May, 2015 - 10:45 am
There is a MODBUS terminal in DOS capable of changing the Stop Bit and Parity mode?
Siemens PCS7-FF Communication with Fieldbus
Posted by gajoshi17 on 18 May, 2015 - 7:38 am
Foundation Fieldbus configuration issue in SIMATIC Manager Software
I/O Messaging with AKD Kollmorgen without PLC CompactLogix
Posted by Anemona on 18 May, 2015 - 6:00 am
Can I send Forward_Open request to establish I/O connection without PLC CompactLogix?
Counters on Mark 5
Posted by DAMENE on 17 May, 2015 - 3:55 pm
How to reset the counters of Fired hours on Speedtronic Mark 5
Cable Differential Tripping
Posted by Sohaib on 17 May, 2015 - 7:33 am
Spurious tripping due to cable differential protection operation
problem in twido plc
Posted by abuzehad on 16 May, 2015 - 2:27 pm
problem of running twido plc
Migrating Siemens PCS7 application to SPPA-T3000
Posted by senthil on 16 May, 2015 - 8:59 am
We are looking for engineering support to integrate our gas turbine application based on PCS7 into the T3000 application server.
Magelis Modbus Protocol
Posted by nestbulala on 16 May, 2015 - 7:38 am
XBTL1000 transfer cannot find protocol driver
safety integrity level study
Posted by Icontrolsystem on 16 May, 2015 - 5:21 am
Hi, If any one has performed the SIL verification, I have following queries as below.
P&ID Pump Selection
Posted by jkate on 15 May, 2015 - 10:08 am
Symbols for P&ID selection between two pumps
Sending a Command from Siemens Step7 to WINCC
Posted by jeffs1234 on 15 May, 2015 - 9:30 am
How to send a command from the Step 7 PLC to the HMI that causes the HMI to change to a specified screen.
ABB Infi 90 Power supply PFI
Posted by mahmoudsallam on 15 May, 2015 - 7:39 am
Frequent Failure of ABB INFI 90 DCS power supply (PFI)
Multiple Modbus RS485 device On same RS485 to USB convertor
Posted by Manthan on 15 May, 2015 - 6:59 am
Connect two or more RS485 Modbus device to single USB port.
Installation of Ultrasonic Flow Meter
Posted by kamaraj on 15 May, 2015 - 1:05 am
Can we install a ultrasonic flow meter on suction line of the pump?
Fuel Gas Pressure
Posted by arjunnwl11 on 14 May, 2015 - 10:12 pm
what significance does fuel gas pressure (Low and high limit) have in gas turbine compressor?
P&ID Balloon for AutoDialer
Posted by jkate on 14 May, 2015 - 3:11 pm
Auto Dialer on P&ID
Need Help Defining ABB Control System Alarm for Gas Turbine
Posted by majed06 on 14 May, 2015 - 12:58 pm
We have ABB (INFI90) control system. Recently we facing alarm"IMMFP02 MODULE STATUS"several times
Mark VIe Suppliers
Posted by bohdand on 14 May, 2015 - 12:01 pm
Anyone have experience in having a 3rd party (non-OEM) provide a Mark VIe control system?
CRC Failure when using 32Bit Float
Posted by modbusprog on 14 May, 2015 - 11:21 am
Master Polling software gives CRC error when passing a IEEE-754 format float, but when sending float it works.
Posted by Avworhiare on 14 May, 2015 - 10:39 am
Frequent tripping of cooling water motors fans breakers
Cost of Allen Bradley Control Logix Programming License
Posted by aphuk on 14 May, 2015 - 9:51 am
AB programming software and License for a laptop
Looking for Good Sources of Basic Information on SCADA Systems
Posted by ishn on 14 May, 2015 - 8:10 am
Want to learn more about SCADA for use in oil and gas field.
PCS7 server and client loging change
Posted by kabilan on 14 May, 2015 - 7:45 am
PCS7 server/client Administrator login changed to new name and password.
Why Do Modifications of FSRP?
Posted by Neo on 14 May, 2015 - 4:40 am
Why these modifications to FSRP considered?
Configuring Server- Client Simulation in WINCC
Posted by srinivasan on 14 May, 2015 - 1:30 am
Configure server/client in wincc professional through simulation
Generators in Parallel. Power Factor Problems
Posted by Schamak on 13 May, 2015 - 12:30 pm
What trips would occur when generator power factor goes from 0.8 lag to 0.5 lag.
MODBUS Readings
Posted by CHRISCONNELL on 13 May, 2015 - 9:45 am
I'm having difficulty reading actual voltages etc with MODBUS software, is this possible?
ABB AC800M code for Profibus
Posted by Tsioumas Evangelos on 13 May, 2015 - 9:35 am
Compact control builder code/project for profibus communication.
Limits to Line Voltage Due to Capacitance
Posted by Larry Hale on 12 May, 2015 - 8:18 pm
Our central generation is 13.8kV, and has a 200A low resistance ground. A feeder runs 18 miles, and is mounted 7' above grade. To limit current draw due to capacitance, we are using 13.8 kV. Is there a way to use 35.5kV?
Low PCD on Solar Turbine
Posted by RubEspn on 12 May, 2015 - 8:58 am
Solar Turbine not firing off, valves open up but sounds like starter may not be engaging?
Improvements in DCS System
Posted by Anil Rajak on 12 May, 2015 - 8:11 am
Please share desired improvements in the DCS which is not available in any of the DCS.
BOSCH CC300 Reference Position
Posted by nsdjole on 12 May, 2015 - 7:42 am
How to adjust tool reference position
Bus Polarization
Posted by Woelffel Vincent on 11 May, 2015 - 12:09 pm
Is it possible to polarize the bus with a 3.3V supply?
High Pressure on Lube Oil Tank
Posted by khairi on 11 May, 2015 - 10:33 am
Turbine tripped on high pressure lube oil tank
Problem with Grid Power Display Value
Posted by devendra_ev on 11 May, 2015 - 6:34 am
Problem with Grid Power display value
Sink Wiring Questions
Posted by spring_daffodil on 11 May, 2015 - 2:31 am
Question regarding sink wiring in a control panel.
Mark-VI Toolbox Terms
Posted by samson16 on 10 May, 2015 - 3:35 am
Need some definitions for Mark-VI Toolbox terms
Simulator/Training Kit for Instrumentaiton
Posted by samson16 on 10 May, 2015 - 3:19 am
Looking for a simulator to provide training on industrial instrumentation
Siemens S7200 with Another S720 as Slave Not Activating Outputs in Run Mode
Posted by JustinT on 10 May, 2015 - 2:19 am
Siemens S7200 with CPU 224XP and its slave, CPU 222, not activating any outputs in run mode.
Hydraulic Ratchet Problem
Posted by osama111 on 9 May, 2015 - 11:39 am
Variable speeds (torque converter)
Configuration of Foundation Fieldbus Instruments
Posted by Abour on 9 May, 2015 - 5:58 am
What is the software used to configure FF transmitters during loop check activity?
What is a TIC Cabinet?
Posted by Kevin on 9 May, 2015 - 1:26 am
Could some one help me in defining what exactly is a TIC Cabinet?
Communication Between Visual Studio and a PLC
Posted by hamit1453 on 9 May, 2015 - 1:13 am
Setting up communication between visual studio and an LS PLC.
Good Online Sources of Information for Instrumentation and Control Engineering
Posted by liveogd on 8 May, 2015 - 6:59 pm
Looking for sources for online instrumentation and control information to learn more.
Posted by powerpack| on 8 May, 2015 - 3:15 pm
First time with MODBUS, Help needed
Increasing VAR Output of a Machine or Decreasing VAR Requirement of the System
Posted by amritanshup on 8 May, 2015 - 1:49 pm
What are the different ways to increase VAR capacity of the generator?
Control and Instrumentation Maintenance in a Hydro Power Station
Posted by Piki on 8 May, 2015 - 9:57 am
Looking for technical instructions for control and instrumentation in a Hydro power set up
Metering 2 Feeders with a Single Power Quality Meter
Posted by popdaddio on 8 May, 2015 - 5:30 am
Metering 2 115 kV lines with a single power quality meter
Turbine Failing to Ignite
Posted by khairi on 8 May, 2015 - 2:54 am
After plant blackout, turbine fails to ignite.
Versa View Recipe, external MS Access
Posted by bqadri on 7 May, 2015 - 6:29 pm
After hard drive crash on Allen Bradley PLC, cannot restore recipe.
Criteria for Local or Remote Indication Instrument
Posted by AE1 on 7 May, 2015 - 1:46 pm
Criteria for local or remote indication instrument
Sensors to Measure Pressure and Temperature for Dirty Hot Gas
Posted by Kataeb on 7 May, 2015 - 5:01 am
Where can I find sensors and gauges to measure pressure and temperature of dirty hot gases?
Pressure Measurement Vacuum Condenser
Posted by Stewart on 7 May, 2015 - 4:26 am
Pressure transmitter hookup for condenser (vacuum)
Replacing the Wheel Space Thermocouple
Posted by shyam on 7 May, 2015 - 1:56 am
Need advice about replacing the wheel space thermocouple.
Water Line Pressure Transmitter Elevation
Posted by dragonmsl on 6 May, 2015 - 8:38 pm
what if transmitter is installed above the tapping point?. Is it possible to solve this problem with offset elevation setting?
Digiforce 9306, What Load Sensor To Use
Posted by Metalspider on 6 May, 2015 - 7:39 pm
Looking for a less expensive force sensor like the Burster bending beam load cell model 8510-5002 to use with Digiforce 9306
Unable to Read Meters (MODBUS RTU) on PCVUE 8.10
Posted by talha on 6 May, 2015 - 1:42 pm
Unable to read Meters (MODBUS RTU) on PCVUE 8.10. It was working fine before reinstalling the PCVUE 8.10
Yokogawa CentumPV, CS3000, Write Tag Data from DOS Prompt
Posted by fluoronator on 6 May, 2015 - 10:45 am
How to write tag data from the DOS prompt on a Yokogawa CentumVP or CS3000 DCS.
Honeywell ST3000 Pressure Transmiter Fault
Posted by msv on 6 May, 2015 - 8:31 am
Honeywell ST3000 Pressure Transmitter sends more than 20 mA while the pressure is normal.
Bleed Valve Limit Switch
Posted by grajesh on 6 May, 2015 - 7:53 am
In frame-9E we are receiving bleed valve trip from the top two bleed valve limit switches due to faulty switches.
HART Protocol
Posted by Abour on 6 May, 2015 - 6:59 am
HART protocol: Digital signal or analog signal family?
Software to Automatically Test PLC Programs
Posted by Edwin on 6 May, 2015 - 3:13 am
Can any one suggest any tool to automate test for our programs? We are currently using CodeSys 2.3 platform.
Control Diagram Design and Testing
Posted by deleordainedcontrol on 5 May, 2015 - 3:29 pm
What software should I use to simulate a control diagram to see the performance?
Calibrating and Correcting Errors on a Floboss 503
Posted by rahulnitj1 on 5 May, 2015 - 9:16 am
How to correct errors when calibrating Floboss 503
Pneumatic Shutdown Valve Pressure
Posted by S Nair on 5 May, 2015 - 2:40 am
Pneumatic Shutdown valve actuators are sized for minimum pressure 5.5 BARG,(80 psig)
Losing Control Signal Over 800 Foot Distance with RS-485
Posted by Lloydzoo on 4 May, 2015 - 12:52 pm
Needing some advice for installation of a MODBUS based fan control touch-pad system.
Monitoring Liebert DS Crac
Posted by cfgriffith on 4 May, 2015 - 10:54 am
Monitoring a Liebert DS Crac using MODBUS.
Help on Final Thesis - Inverted Pendulum Control
Posted by jderuyter on 4 May, 2015 - 10:21 am
Need help on my masters degree thesis on designing the PLC interface for an inverted pendulum system. I have the sensors and the motor and a Siemens s7 series PLC.
Configuration MODBUS
Posted by joud on 4 May, 2015 - 7:59 am
How to transfer/receive the data with MODBUS protocol between control systems, Yokogawa Centum and Allen Bradley PLC?
Need a Brief Introduction of ARES Model
Posted by sjtusyc on 3 May, 2015 - 10:50 pm
Can someone give a brief introduction of ARES model?