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Modbus Function Code
Posted by 386956599 on 2 December, 2016 - 7:27 am
Modbus function code 03 and 04 confusion
Open/Close Test of Liquid Fuel Bypass Valve without LVDTs
Posted by Wajid29 on 1 December, 2016 - 9:34 am
How to perform open/close test liquid fuel bypass valve servo valve 65FP on GE frame 9E machine without LVDTs?
GE Mark VI S Controller Failure
Posted by matrix2016 on 1 December, 2016 - 8:26 am
GE Mark VI controller S status offline several days after startup
2
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GE Frame 9E Turbine Support Leg Bulge
Posted by mechnub on 1 December, 2016 - 3:04 am
Turbine support leg center body bulge slightly when cooling water pump runs
MCC Earthing
Posted by ahdash on 30 November, 2016 - 5:57 pm
Earthing design and standards
Used Gas Turbines
Posted by ahdash on 30 November, 2016 - 5:53 pm
What to look for when purchasing a used gas turbine?
Modicon Quantum/Word Mapping
Posted by thomasicsc on 30 November, 2016 - 5:00 pm
Trying to understand word mapping
5
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RS232 Over Fiber Issue
Posted by jeffworn on 30 November, 2016 - 2:06 pm
Can't establish RS232 Cisco console session using RS232 fiber converter
2
replies
Coil Overheating Issue
Posted by Kamran Ali on 30 November, 2016 - 2:00 am
We have an 220 VAC solenoid at one of our McQuay Chillers. It is used as part of its expansion valve. We have been facing overheating issues for a while.
Evaporative Cooler On/Off Linked to IGV Angle in GE 7FA
Posted by Power13031978 on 29 November, 2016 - 2:59 pm
Reason for evaporative cooler on/off linked to IGV angle in GE 7FA?
1
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Ms5001 Startup Problems
Posted by Alfred MP on 28 November, 2016 - 1:25 pm
Markvie ms5001 trips at 95% speed by oscilating flame loss. Message no followed GCV reference.
1
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Manual Fuel Transfer on Frame 9E Gas Turbine
Posted by George Avorka on 28 November, 2016 - 12:23 pm
Why shouldn't we manually transfer fuel on the frame 9E gas turbine at loads less than 30MW?
1
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Setting up Profinet I/O in Siemens TIA Portal
Posted by oli268 on 28 November, 2016 - 8:32 am
Siemens PLC Controlling a Lenze servo
1
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Islanded Case Frame VI GT Mark V Ramp Rate
Posted by mechpramod on 28 November, 2016 - 5:22 am
Need to know load ramp rate of Frame VI GT
2
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Citect v7.40 SP2 - Modbus/TCP - Request Wrong Word Count
Posted by agoslinski on 28 November, 2016 - 4:08 am
Citect is sending wrong Modbus requests to my Moxa gateway. Word count is bigger than it should be - 7A HEX instead of 2.
3
replies
Mark VI Technical Maintenance
Posted by Vyacheslavovich on 27 November, 2016 - 1:34 pm
Looking for companies that contract to perform GE Speedtronic Mark VI maintenance.
WattStopper HLINKCC and Old Lighting Integrator Panels
Posted by Bl2YAN on 26 November, 2016 - 11:30 am
Interfacing with an old Wattstopper HLINKCC and LI LCPs
3
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Moog Servo Calibration
Posted by thegroovyguru on 25 November, 2016 - 11:53 am
What is the procedure to calibrate Moog Servos for ICV/MCV valves?
DC Link of AC Sources
Posted by Kataeb on 25 November, 2016 - 4:06 am
Several AC supplies connected to one DC bus, then use one inverter to produce a common AC supply.
3
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120/277V Power Connect for Hot Water Tank
Posted by Don on 24 November, 2016 - 12:02 pm
Power connect for a 50 gallon hot water tank is 120 and 277 V
1
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Liquid Fuel Filter Thermal Relief Valve
Posted by Aptx4869 on 24 November, 2016 - 10:13 am
Thermal Relief Valve of the liquid fuel filter is passing liquid to FSD Tank.
2
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Synchronizing Magelis STU Time with Modicon PLC
Posted by Garym on 24 November, 2016 - 4:01 am
Trying to synchronize Magelis STU HMI time with a Modicon PLC using codesys and vijeo designer
Thrust Balancing
Posted by aneesh on 23 November, 2016 - 6:41 pm
How is the thrust balancing on steam-turbine done?
1
reply
Step 7 Simatic Programming Examples
Posted by Lotos on 22 November, 2016 - 2:25 pm
Beginner with Step7 Simatic would like to get program examples.
1
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Heat Units in Regards to Steam Tables
Posted by bulldog1 on 22 November, 2016 - 2:23 pm
Heat units for water and steam
3
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Upgraded Steam Turbine Produces Less Output
Posted by suryavine on 22 November, 2016 - 8:31 am
After upgrading steam turbine's output is 5 to 6 mw less than other steam turbine.
1
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Restoring Idos to New HDD
Posted by tech_guy on 21 November, 2016 - 2:46 pm
How do I restore Idos to a New HDD?
11
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Driving an Analog Output Module of Phoenix Contact with Foxboro IA System
Posted by zapotek67 on 21 November, 2016 - 8:33 am
A problem writing a value to Analog output module of phoenix contact using Modbus. Control system is Foxboro IA series V8.2. Modbus module is FBM230.
Stress Calculation Stabilizing SC4 Steam Turbine
Posted by anbesivam87 on 21 November, 2016 - 2:47 am
How the stress calculated for GE steam turbine
1
reply
No Connection RS485
Posted by UserError on 20 November, 2016 - 9:59 pm
No connection to from controller rs485 to PC.
2
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Possibility of Gas Turbine Driving Centrifugal Compressor Running When Compressor Trips
Posted by hany5757 on 19 November, 2016 - 5:18 am
Can gas turbine that driving a centrifugal compressor run while compressor trip?
2
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Changing from Bar(G) Pressure tx to Bar(A) Pressure tx
Posted by chillwin on 18 November, 2016 - 12:37 pm
Why change from Bar(G) pressure tx to Bar(A) pressure tx?
1
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440 V/60 Hz Motor on 380 V/60 Hz
Posted by sampath on 18 November, 2016 - 3:18 am
Using a 440 V/60 Hz motor on 380 V/60 Hz?
1
reply
Compactlogix PLC with HART
Posted by imti2356 on 17 November, 2016 - 10:25 pm
Connecting a Compactlogic PLC with a 1769sc-IF4IH HART module
1
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No Protection During SNL Risks
Posted by Clairlight on 17 November, 2016 - 7:13 pm
Risks associated with operating a Unit in speed no load and not connected to the grid without unit protection.
2
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MarkV Verfiy Current
Posted by gilariver on 17 November, 2016 - 5:48 pm
Verify current testing does not drive valve open.
9
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Error from Type K Extension vs Thermocouple Wire
Posted by JOAMON on 17 November, 2016 - 9:58 am
What would the magnitude of the error be from using just extension wire, not thermocouple wire?
3
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Turboprop/Turboshaft Control
Posted by KalmanR on 17 November, 2016 - 5:01 am
Looking for information on how modern turboprop/turboshaft control systems work?
Unit Trip on Grid Disturbance
Posted by lushan on 16 November, 2016 - 2:36 pm
During a grid disturbance the excitation tripped the turbine and generator.
False Start Drain
Posted by Aptx4869 on 16 November, 2016 - 1:36 pm
Idea behind the false start drain being only in the lower cans
5
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3-Way Purge Valve Passing Liquid to Liquid Fuel Nozzle
Posted by Aptx4869 on 16 November, 2016 - 10:13 am
3-way purge valve passing liquid to liquid fuel nozzle when while liquid fuel re-circulation is on.
2
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Questions on Lift Oil and Effect of Orifice Pressure
Posted by Aptx4869 on 16 November, 2016 - 9:42 am
Effect of the lockable flow control valve on lift pressure. Orifice effect on pressure and flow rate.
CC-link Communication
Posted by Madhumati on 16 November, 2016 - 6:25 am
Using CClink Slave NT and observing that I/O data bytes are getting shifted.
4
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Modbus RTU Polling Delay
Posted by Graham Pyatt on 16 November, 2016 - 5:06 am
Implementing Modbus RTU system (PLC to 4 slaves). Necessary to set the polling delay to 100mS. No indication of polling delay requirement in Modbus Protocol. Why a delay?
4
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Hitachi H-25 Gas Turbine Exhaust Spread and Wheel Space Temperature
Posted by MHB on 14 November, 2016 - 2:15 am
Facing high exhaust temperature spread on our Hitachi H-25 gas turbine since August. After HGPI in October high exhaust temperature spread observed again on machine start up.
7
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Gas turbine Speed VS Load
Posted by bmehda on 13 November, 2016 - 12:26 pm
Questions about load for a gas turbine running three centrifugal compressors in series
1
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Problems with Level Measurement Using Displacer Sensor
Posted by Shamsuddin on 12 November, 2016 - 2:50 am
Problem faced in level measurement using displacer sensor 249B with DLC3010, Process pressure 700 psi and Process temperature 80 Degree F to 100 Degree F.
8
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RS485 Challenge
Posted by tansie on 11 November, 2016 - 7:11 am
One RS485 device does not work when it is in the RS485 network with the other six devices, but it works when it is the only device on the network.
1
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Testing Overspeed Sensor
Posted by geeH on 11 November, 2016 - 6:31 am
Testing a Perkins 838/14 over speed sensor
2
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VCRC Diagnostic Trouble
Posted by Obiloko4 on 10 November, 2016 - 4:23 pm
There are certain alarms that are active and holding the unit from getting to Ready to Start
1
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Modbus TCP Connect with Website
Posted by Kasia on 10 November, 2016 - 3:59 pm
Can I connect from website with PLC S7-1200
9
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GE Frame 6b Ratchet Motor
Posted by davidmcc on 10 November, 2016 - 12:37 pm
What steps do we take after a ratchet pump failure?
South East DCS User Group Meeting
Posted by Joe Scott on 10 November, 2016 - 9:41 am
South East User Group DCS Meeting in Birmingham AL
3
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BT Fan Stopped on Cooldown Timer Complete
Posted by vimal gupta on 10 November, 2016 - 5:37 am
Frame-V machine turbine vent fan stops on T62CD timer completion
SGT-600 Bearing RTDs
Posted by Dimonaman on 10 November, 2016 - 1:50 am
Looking for information on Siemens SGT-600 bearing RTDs
1
reply
Cascade PID for Density & Flow Control.
Posted by fuzzymridul on 9 November, 2016 - 8:22 pm
Density & Flow Control with dosing in line.
Modbus RTU Communication Between HMI HNC-TP2507 and DANFOSS FC51
Posted by Sebastian Azcurra on 9 November, 2016 - 3:02 pm
I need to operate an FC51 with an HMI (HNC)
1
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HRSG
Posted by mna on 9 November, 2016 - 2:03 pm
GTs with triple pressure HRSG with line from IP econ
3
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Compressed Air Extraction from Heavy Duty Gas Turbine
Posted by niazbibiyana on 9 November, 2016 - 11:30 am
I need to be clarified about various types of air extraction from compressor side at heavy duty gas turbine (9F.03)
8
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3 Way Valve Drain Port "Vent"
Posted by Aptx4869 on 9 November, 2016 - 11:13 am
Benefit of 3 way valve drain port, stamped "vent"
5
replies
Power Problem
Posted by Marvin on 9 November, 2016 - 10:16 am
VFD Causing Harmonics
1
reply
LM 6000 Dual Compressor
Posted by SK on 8 November, 2016 - 11:05 pm
Why does the LM6000 use LP and HP compressor and LP and HP turbine?
Bently Nevada Module 3500/61
Posted by Mihir Ramkrishna on 8 November, 2016 - 6:45 am
Temperature Display problem in BN 3500/61 module when Laptop is connected to it.
Bently Nevada 3500 Power Supply
Posted by djafer on 8 November, 2016 - 5:50 am
Looking for additional power supply
4
replies
MarkV Historian
Posted by Rajesh on 8 November, 2016 - 3:34 am
Historian is connected with 8 Gas Turbines and running with out of memory
3
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Liquid Fuel System Articles
Posted by Aptx4869 on 7 November, 2016 - 10:08 am
Articles about that water cooled check valve or 3 way-valve would increase the readability of LF System.
2
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MODBUS - RTU Implementation Using AVR ATMEGA32A Controllers and RS485
Posted by Kshitij_Lakhani on 7 November, 2016 - 6:05 am
Simple MODBUS - RTU implementation using AVR ATMEGA32A controllers and RS485 as the electrical layer.
1
reply
BLDC Control Board
Posted by Dinesh on 7 November, 2016 - 1:37 am
Looking for recommendations for an evaluation board for a BLDC hub motor.
6
replies
Lube Oil Pump
Posted by Aptx4869 on 5 November, 2016 - 12:55 pm
Both Lube Oil Pumps running at the same time
PV800 HMI Multiple Position Switch
Posted by willsted on 4 November, 2016 - 4:55 pm
Batch tank system, Is it possible to make a six position selector switch with a HMI? I am using a AB Panel-View 800
4
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Endress and Hauser Promag 53 Network Failure
Posted by Maclaughlin on 3 November, 2016 - 3:16 pm
Trying to figure out why FITs lose network communication at times.
Scheidt & Bachmann V11 Pump Communication Protocol
Posted by kovacevicdr on 3 November, 2016 - 8:13 am
Trying to connect Scheidt & Bachmann fuel dispenser to computer
4
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GE HMI OS - Windows 10 availability
Posted by 10_ac on 3 November, 2016 - 8:12 am
Is the Windows 10 OS available for GE HMI application Toolbox for MKVIe?
3
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Setting VTUR Circuit Braker Adaptive Close Time
Posted by topcat123 on 3 November, 2016 - 4:38 am
Setting for CB1CloseTime and adaptive time on MK6E VTUR
2
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GE Diagnostic Alarms
Posted by modulusyoung on 2 November, 2016 - 5:41 pm
How to disable GE Diagnostic Alarms from being broadcast in the WorkstationST environment?
1
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Modbus Library in MATLAB
Posted by reza_Hdr on 2 November, 2016 - 2:44 pm
Want to communicate between controller and MATLAB via Ethernet cable using Modbus over Ethernet
6
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Python Based HMI
Posted by Navigator on 2 November, 2016 - 9:54 am
Looking for reference on Python based port communication/HMI
1
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Shaft Grounding for Steam Turbine
Posted by PSMoudgalya on 2 November, 2016 - 6:57 am
What should be grounded on a condensing turbine?
1
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Circuit Protection for a Pump
Posted by revamp on 2 November, 2016 - 6:15 am
How to size circuit protection for a pump
5
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Modbus Errors in HVAC System - Invalid CRC and Response Not from Requested Slave
Posted by sx3 on 2 November, 2016 - 5:03 am
Modbus errors after connecting heat pump to HVAC, Invalid CRC, Operation times out, Response not from requested slave.
8
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MKVIe IO Pack Failures
Posted by Chutney on 1 November, 2016 - 10:09 pm
MKVIe IO Pack Failures and "Module Required" meaning.
1
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Absolute Encoder SSI Interface and Grey Code
Posted by Warnakula on 1 November, 2016 - 1:22 pm
How does an absolute encoder works with the SSI interface and what is grey code all about?
FastTrak PLC Programming Software
Posted by geoffrybrown on 1 November, 2016 - 12:18 pm
What are your FastTrak PLC programming software experiences?
Saia PCD - Saia Burgess Controls
Posted by Ulvis on 1 November, 2016 - 8:06 am
Anyone using Saia-PCD PLCs?
2
replies
Gas Orifice Plate Resizing
Posted by chillwin on 1 November, 2016 - 6:31 am
Changing gas orifice plate sizing
GE Workstation ST OPC AE Server
Posted by modulusyoung on 31 October, 2016 - 6:45 pm
Does anyone has experience with GE WorkstationST OPC AE server?
Unity Pro Loop Drawings
Posted by apps_man on 31 October, 2016 - 6:41 pm
Printing a module edge loop wiring drawing from Unity Pro.
3
replies
Gas Turbine Inlet - Turbine Inlet Temperature
Posted by ABDELAALI on 31 October, 2016 - 4:26 pm
How to calculate turbine inlet temperature and what parameters control the evolution of this temperature?
6
replies
Rockwell PLC PID Setpoint Ramp
Posted by old guy on 31 October, 2016 - 9:19 am
Rockwell PLC PID setpoint ramp question
Gas Turbine Inlet Pressure Loss and Exhaust Pressure Loss
Posted by GTguy99 on 31 October, 2016 - 7:59 am
Why is total pressure loss used for Inlet Pressure Loss and static pressure loss used for Exhaust Pressure Loss?
4
replies
Vacuum at Bearing Housing
Posted by Aptx4869 on 30 October, 2016 - 9:23 am
Purpose behind keeping the bearing housing at vacuum
4
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How PLC Communicates with DCS
Posted by Mans92 on 30 October, 2016 - 3:58 am
How does a PLC relate to the DCS
1
reply
Retro-fitable Noninvasive Flow Meter for Measuring Pressurised Water
Posted by billythepipe on 30 October, 2016 - 3:01 am
Want to put some inexpensive non-invasive sensors to measure pressurized water flow rate in 1/2" pipes.
2
replies
Automation Deliverables
Posted by Mans92 on 29 October, 2016 - 7:27 am
Main Automation deliverables
7
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Will a VFD Output Single Phase?
Posted by Mays on 28 October, 2016 - 5:04 pm
VFD outputting single phase
4
replies
RSView32 and SQL
Posted by Quantum866 on 28 October, 2016 - 9:10 am
How to Read a SQL Table into RSView32 Tags
2
replies
Mark V HMI No Data
Posted by EngHarthi on 27 October, 2016 - 8:05 pm
One of Mark V HMIs shows no data. However, Data can be seen from other HMIs.
Webserver Communication ABB RTU560 CMR01
Posted by hijashmk on 27 October, 2016 - 8:52 am
Unable to setup webserver communication for ABB RTU560 CMR01
Document That Describes IEEE Different Earthing Standard?
Posted by bhushan_javle04 on 27 October, 2016 - 3:43 am
Which IEEE earthing standard can be called when safety and instruments are connected at one end to the panel?
1
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Siemens S7-400 Does Not Power On
Posted by Abdul Mateen on 27 October, 2016 - 1:25 am
Siemens S7-400 would not power on after communication error.