Today is...
Sunday, October 20, 2019
Welcome to Control.com, the global online
community of automation professionals.
Featured Video...
Featured Video
A tutorial introduction to programming using the QuickBuilder Programming Environment.
Our Advertisers
Help keep our servers running...
Patronize our advertisers!
Visit our Post Archive
Forum Archive
Boiler Efficieny which is Used Under its Capacity
Posted by zapotek67 on 17 October, 2019 - 7:39 am
If I use a boiler under its capacity, how does its efficiency change?
1
reply
6FA MARK V
Posted by vijay on 17 October, 2019 - 3:02 am
What could be the reasons for diagnostic alarm TCQA LVDT POSITION DIFF HIGH REG#7 in Core <R> <S> <T> ST: 0* DROP:1342
1
reply
Siemens LR250 l.o.e. in Steam Environment
Posted by robb_IE on 15 October, 2019 - 1:40 pm
Periodic loss of echo on LR250, suspect it is due to dense steam in tank.
1
reply
MNavigate Software for ABB
Posted by cyclomaster on 15 October, 2019 - 10:22 am
How to obtain MNavigate software for low voltage MNSiS ABB switchgear?
Can the water level sensor Arduino be connected to I2C interface?
Posted by Holykell on 15 October, 2019 - 5:12 am
Is the water level sensor Arduino suitable for I2C interface?
FSRN Coefficient
Posted by no_bug on 14 October, 2019 - 7:18 am
what is TLC_Comp coefficient in FSRN ?
4
replies
MAX Droop
Posted by no_bug on 14 October, 2019 - 7:11 am
Is TNKR3 MAX Droop value?
3
replies
Slave Polling Only Once and then not Responding
Posted by manojrkl24 on 14 October, 2019 - 6:06 am
While polling the slave from an RS485 convertor through Modscan Software, it is polling once and it's not responding.
1
reply
Changing ARCNET Card
Posted by engimad on 13 October, 2019 - 5:31 am
Any procedure to change ARCNET card (MARK V IDOS) with ISA bus to ARCNET with PCI bus?
4
replies
FSRN (Correction Factor)
Posted by no_bug on 13 October, 2019 - 3:08 am
Why in FSRN we have FSRN + FSR in : {FSKRN3*(TNRI-TNH)- FSRN + FSR} + FSRNI?
2
replies
GE Mark V Electronic Overspeed Test on Cooldown
Posted by RJSolo on 12 October, 2019 - 11:23 am
Testing the GE Mark V Primary & Emergency Electronic Overspeed on Cooldown
GE MARK VI Controller Hard-Coded Password Vulnerability Notice
Posted by mtoecker on 11 October, 2019 - 11:56 am
DHS's ICS-CERT released a vulnerability notice about the hard coded password in GE's MARK VI Controllers
Load Throw Off
Posted by CPRAJ on 11 October, 2019 - 9:28 am
4X250MW Hydro Units are Connected to Indian Grid through 2X400KV Transmission Lines. Is it required from protection to trip the breaker of the unis running in parallel when total load throw off occurs/both the transmission lines are tripped.
1
reply
Flow Sensor Recommendation Needed
Posted by Trans_volta on 10 October, 2019 - 3:46 pm
Need recommendation on flow meter for severe service - high temperature and pressure.
TORQUEREFSCALE in Motiflexe180 ABB servo drive
Posted by teslaroot on 10 October, 2019 - 12:08 pm
TORQUEREFSCALE in Motiflexe180 ABB servo drive over Ethercat
1
reply
Sanitary Level Transducer to Measure Milk Level
Posted by Holykell on 10 October, 2019 - 2:21 am
Which level sensor can measure milk level?
Nexus Oc6000 DCS Manual
Posted by Razzakbwp@gmail.com on 10 October, 2019 - 1:18 am
Detailed manual for GE Nexus OC 6000 DCS
2
replies
Suppressing the Pipeline Noise Burst
Posted by hjams on 10 October, 2019 - 1:18 am
Gas vent silencers for double block and bleed gas safety system
1
reply
Troubleshooting of Daniel Flow Transmitter 3414/3410
Posted by Amar DAMENE on 9 October, 2019 - 12:41 pm
How to fix an error message on LCD Daniel flow transmitter 3410 and how to fix the 3.54 mA signal on the DCS
GE flame 6 B was Tripped by Power Supply Core R Fault
Posted by poompee on 9 October, 2019 - 12:30 pm
GE flame 6 B was tripped by Power supply Core R fault.
1
reply
Effect on Secondary Voltage in Connection Star and Delta of a Trans
Posted by Shaheed on 9 October, 2019 - 6:13 am
Effect on secondary voltage of 6.3KV primary delta to secondary delta step up 11KV transformer transformer secondary delta connection into star connection is replaced?
ACS1013-W2 Communication with PLC
Posted by KiranKumar69 on 9 October, 2019 - 12:40 am
How to communicate ACS1013-W2 ABB MV Drive with PLC
Citect Filemap
Posted by pmoren on 8 October, 2019 - 8:36 pm
Connecting Citect 6.0 with a Visual Basic application
1
reply
Factorytalk Communications to Valmet DCS
Posted by Mpbrown on 7 October, 2019 - 10:40 pm
Practicality of DCS supervisory system with the majority of process controls being on 3rd party PLC and local graphics servers.
2
replies
GE Frame6B MKV Failure to Ignite
Posted by Jaffar on 7 October, 2019 - 10:05 pm
GE Frame 6B (MKV) tripped due to failure to ignite during starting up on GAS.
Tuning Issue After CI on Frame 7EA DLN
Posted by Deron Turlington on 7 October, 2019 - 11:30 am
The controls TA isn't able to get our NOx levels down to an acceptable level. His theory is that we have an air leak somewhere in the system.
1
reply
ELOP II MODBUS Communication
Posted by Mohanna on 7 October, 2019 - 3:00 am
We have connected Hima Hq51 with Yokogawa Centum VP DCS by MODBUS TCP/IP but BOOL data not receved in DCS.
1
reply
Sensorless Flow Measurement with ACS880
Posted by zapotek67 on 5 October, 2019 - 9:13 am
ABB ACS 880 drives can measure flow across the pump without any sensor. What is the configuration for this at acs880 drive? Which parameters should I set?
4
replies
Start-Up Gas Turbine Frame 6B on Destilate Mode
Posted by ADEM on 5 October, 2019 - 4:27 am
Starup gas turbine frame 6B on destilate mode.
1
reply
Digital Servo Drives
Posted by Jose on 4 October, 2019 - 4:48 pm
Digital Servo drivers with resolver feedback vs encoder feedback
1
reply
How to Download Program to Empty UCSA
Posted by ahmad moussa on 2 October, 2019 - 5:37 pm
Found UCSA empty without any program. Need ToolboxST help.
2
replies
Sympathetic Tripping
Posted by Deji on 2 October, 2019 - 1:11 am
Are solidly grounded MV (11KV) feeders susceptible to sympathetic tripping?
Parts Supplier for Steam Gas Turbine
Posted by chungkoo on 1 October, 2019 - 6:39 pm
Looking for a supplier who can immediately supply parts for steam gas turbine plant.
2
replies
GE MARK VI Cimplicity Alarm
Posted by ruels on 1 October, 2019 - 1:14 pm
GE MARK VI CIMPLICITY ALARM. Audible alarm will not sounds off when alarm triggers. Audible alarm is too short.
1
reply
H2S Gas Detector
Posted by automat81 on 1 October, 2019 - 10:49 am
H2S detector for the range of the detector is 0 -100 ppm
1
reply
Modbus RTS Terminal Server
Posted by Ahmad on 1 October, 2019 - 9:53 am
Problems with RTS terminal server, values from RTU drop to zero.
6
replies
ST Power Generator
Posted by absado on 1 October, 2019 - 9:23 am
I need a help to explain a phenomenon happened during a wrong manipulation of breakers of steam turbine power generators.
2
replies
CPD Step Decrease/Increase at Constant Conditions
Posted by muhammadbilal on 1 October, 2019 - 3:58 am
GE 9E frame gas turbine - There is repeating decrease in compressor CPD and then restores back to same level at constant conditions.
2
replies
GE MKV Generator RTDs Alarm Trip
Posted by CMan on 1 October, 2019 - 3:35 am
GE PG6581B MKV Generator RTDs alarm trip Alarm Drop 0283, 0284,0285, 0271, 0274, 0275 & 0278
1
reply
Writing an Address in Intouch Wonderware
Posted by TokiMIT on 27 September, 2019 - 7:29 am
Anyone know how to write an address in my Intouch?
1
reply
GELM6000 IGV Difference Alarm
Posted by stevenmongeon on 26 September, 2019 - 8:21 am
GE LM6000 IGV Difference Alarm while running. But both A and B sensor match perfectly in calibration.
1
reply
Fiber Optic Sensor Mounting
Posted by Timk5000 on 25 September, 2019 - 1:20 pm
Trying to design a bracket for a machine that supports a threaded Diffused Fiber Optic Sensor.
1
reply
Turbine Tripping on "Combustion Trouble" & "High Exhaust Temp Spread Trip"
Posted by vinodkpandey on 25 September, 2019 - 6:20 am
Machine load command was changed from 65 MW to 15 MW, and m/c load further decreased down to 1.89 MW. Tripped on "Combustion Trouble" & "High Exhaust Temp spread trip"
3
replies
88WC Fault Display on HMI
Posted by Sirtaurus12 on 25 September, 2019 - 6:16 am
88WC tripping and switching to the second motor, but we can’t seem to know why it does that.
1
reply
Communication with Arburg Selogica Injection Molding Controller
Posted by RizwanQ on 24 September, 2019 - 4:29 am
Communication via rs232 v24 having S5 3964R protocol with Arburg Selogica injection molding controller V3.09
1
reply
Process Surge Control Decoupling Block
Posted by vivek_5530 on 22 September, 2019 - 10:17 am
Can anyone briefly explain about process surge decoupling Block in Compressor Surge control?
1
reply
Earth Electrode Resistance Measurement
Posted by carlosduarte on 21 September, 2019 - 3:01 pm
Earth resistance loop test vs. Ground earth clamp
5
replies
Island Mode Frequency Control
Posted by electrocuted on 21 September, 2019 - 5:22 am
How is frequency controlled on a plant running in island mode, when all generators are in Droop mode?
3
replies
Panel Vent and Fan Location Advice Please
Posted by xtal_001 on 20 September, 2019 - 6:05 pm
I need to install a fan in two panels. Blow in, suck out ... mount high or mount low?
Replacement Multimode Fiber Switch 10 base FL
Posted by uzangiworld on 20 September, 2019 - 8:21 am
Looking for any 10 base FL Multimode switch working on a masterbus 300 network
1
reply
How to use the 5303-MBP-MNET?
Posted by dtammi on 20 September, 2019 - 7:43 am
Talking to Modbus/Plus PLCs from a computer using Modbus/TCP/IP
4
replies
Hex to Decimal Conversion
Posted by Mark1261 on 19 September, 2019 - 5:43 pm
How to convert hex to decimal for Modbus
1
reply
Tornado SGT200 Siemens
Posted by Jaafar on 18 September, 2019 - 8:00 am
Presentation training for Siemens SGT 200
PHD Ideas in Instrumentation and Control
Posted by metrologydude on 18 September, 2019 - 5:28 am
Looking for a PHD project either in instrumentation, AI or automation
How many types of iot level sensors are there?
Posted by Holykell on 18 September, 2019 - 3:41 am
Types of iot level sensors
4
replies
Magnetic Flowmeter in Demin Water
Posted by jdpgaming24 on 17 September, 2019 - 11:21 am
Erratic/Swinging reading of electromagnetic flowmeter used in demin water
1
reply
DLMS Packet Format over Modbus
Posted by purnamasi on 17 September, 2019 - 7:23 am
DLMS packet sending format over Modbus protocol.
1
reply
Issue with Modbus Communication
Posted by VilasDesai on 17 September, 2019 - 2:44 am
Issue wth PLC as Modbus Master and 6 HMIs as slaves on Rs485
1
reply
2 Wire Modbus RTU Network Incorrect Wiring Scenario
Posted by Doug Dye on 16 September, 2019 - 8:05 pm
Shield landed at data terminal and data wire landed at shield/ground terminal.
1
reply
VC3 hunting of GE MS9001E Gas Turbine During Startup
Posted by AamirSohail on 16 September, 2019 - 12:04 pm
Gas Turbine GE MS9001E gets trip over 'LOSS OF FLAME' signal because of the hunting of Liquid fuel bypass valve (VC3).
CPD vs PCD-Purge Differential
Posted by turbinectech on 16 September, 2019 - 8:10 am
Issue with purge differential on one unit.
1
reply
GE Frame 6B Load Decreases
Posted by SMS on 16 September, 2019 - 3:58 am
After rainfall GE Frame6B GT CPD decreases along with Base load MW output.
3
replies
Instrument Cable in an Electrical Transit
Posted by drafnoob on 16 September, 2019 - 1:16 am
Is it possible to put an instrument cable through an electrical cable transit?
3
replies
Torque Converter
Posted by rohitdas10 on 15 September, 2019 - 10:31 pm
How does a torque converter work when a Frame 6 Gas turbine?
Instrument Selection for Solvay Based Soda Ash Plant
Posted by saqib786 on 15 September, 2019 - 1:42 pm
Looking for guidance in selecting instrument for soda ash plant
4
replies
Speed Drop in Steam Turbine with Woodward 505e
Posted by electrocuted on 15 September, 2019 - 6:56 am
We have recently been facing sudden speed drops in extraction steam turbine, and Woodward 505e just seems to fail to respond to any speed increase commands.
2
replies
Open Thermocouple when heated
Posted by ThomasW on 14 September, 2019 - 2:27 pm
Intermittent T/C failing
2
replies
New Genset Trips On Overspeed at Startup
Posted by Saulguy on 13 September, 2019 - 4:34 pm
We are unable to start our diesel engine without tripping on overspeed due to an overshoot of the setpoint/rated speed.
1
reply
Single Mode vs Multi Mode for Fiber Optics
Posted by RyanBetts on 13 September, 2019 - 1:52 pm
Single Mode vs Multi Mode fiber optic runs for control systems
Bently Nevada BN3500 Download
Posted by timalg on 13 September, 2019 - 11:04 am
Alarm message after modifying and downloading a program to our Bently Nevada BN3500
Converting Siemens APACS PID Tuning to Rockwell Control Logix
Posted by Albertan on 12 September, 2019 - 11:17 pm
Need to convert Siemens APACS tuning parameters to Control Logix PID tuning parameters.
1
reply
Modbus Command Memory
Posted by salwa17 on 12 September, 2019 - 5:45 pm
What is the command memory and command memory count please?
PLC/SCADA/TELEMETRY - Better Option
Posted by Selk on 12 September, 2019 - 5:14 am
Looking for advice on PLC/SCADA/TELEMETRY options
Transferring Data from Proficy Historian v.5 API
Posted by inkerinmaa on 12 September, 2019 - 1:25 am
Transferring data from Proficy Historian v.5 API to a remote PC
39
replies
Site Power Outage Due to Underfrequency
Posted by Makster on 11 September, 2019 - 10:44 am
Recently we had a complete power outage at our site, and I want to share the events to conclude the RCA of said outage
Turning Gear Failure
Posted by mabdullahkhan1971 on 11 September, 2019 - 10:16 am
Failure of turning gear in our 50MW aero derivative gas turbine
1
reply
PLC IDE with Code Compare Functions
Posted by multivits on 10 September, 2019 - 9:51 pm
Are there PLC IDEs which have a function which allows 2 PLC programs to be compared to each other?
1
reply
Alarm on GE Machine Frame 9E
Posted by ARTHUR on 9 September, 2019 - 12:30 pm
Resolving "Node CRM1_SVR detects link to REM1SVR is down" alarm
IEC-101 Queue System
Posted by dhamushree on 9 September, 2019 - 8:23 am
In halfduplex communication device, whether queue system is possible or not in IEC-101?
2
replies
MODBUS Function Code 16 - Value out of range
Posted by gautam on 9 September, 2019 - 7:01 am
MODBUS Slave - Functions Code 16 Multiple register write
3
replies
Mark V DWATT Signal Loss
Posted by VIJAY on 6 September, 2019 - 8:36 am
What will be the consequence if DWATT signal loss (transducer failure) in mark V?
Liquid and Combustible Samples and NFPA 496
Posted by KPenson on 5 September, 2019 - 6:32 pm
I have run into a debate about liquid combustible samples and NFPA 496
1
reply
Steam turbine Tripped on Overexcitaion Protection V/f >1
Posted by ansmehmood on 5 September, 2019 - 11:14 am
Our generator tripped on over excitation due to high grid requirements. But the over excitation limiter did not control it.
Wonderware Intouch Edge
Posted by Tripod70 on 5 September, 2019 - 11:05 am
Looking for some feedback on Intouch Edge before purchasing
1
reply
Simple Examples of Open Loop and Closed Loop Control
Posted by abtj90 on 5 September, 2019 - 6:30 am
Looking for simple examples of an open loop and close loop control from any process industry
Advantages and Disadvantages of Magnetostrictive Probe Level Measurement
Posted by Holykell on 5 September, 2019 - 3:12 am
What are the advantages and disadvantages of the magnetostrictive probe level measurement?
2
replies
MODBUS/RTU RS 485 Data Reading Problem
Posted by Ashish K on 4 September, 2019 - 11:04 am
MODBUS/RTU RS 485 data reading problem by IS-PC located at field (Slave)
3
replies
Gas Turbine Coupled to Asynchronous Generator
Posted by vladimir36 on 3 September, 2019 - 11:19 am
It it possible to use an asynchronous generator coupled to a gas turbine in isolated system?
1
reply
Using Modbus to Send Data Across to Two PLCs Belonging to Two Different Networks
Posted by Naveen on 2 September, 2019 - 11:23 am
Need to establish serial commmunication with two PLCs of different networks.
1
reply
Possibile Tasks in Automaton and Control Where One Could Work Remotely from Home
Posted by garym68 on 2 September, 2019 - 9:06 am
Which parts of the control & automation life cycle will be best suited to working remotely from home?
4
replies
Efficiency of Triple Pressure Steam Turbine
Posted by faisalnadim on 2 September, 2019 - 2:27 am
Our steam turbine is producing MWS less than design base load. While at partial load 75 percent, it’s producing extra MWS. Is there any problem with our Boilers or VFD Boiler feed pumps?
1
reply
GE MS3002 2nd Stage Nozzles Stuck
Posted by KUTAN on 1 September, 2019 - 9:59 pm
Is 8500kPa hydraulic pressure at nozzles ram high enough on MS3002?
Unity Programming for EHC105 Counter
Posted by apps_man on 1 September, 2019 - 5:18 pm
Looking for proven solutions for software control of EHC counter inputs.
1
reply
Backup Retrieval from Rustronics Mark-II System
Posted by Makster on 30 August, 2019 - 2:31 pm
What is the backup retrieval procedure from Rustronics Mark-II Controller?
Are there headerless exception messages?
Posted by edavid on 30 August, 2019 - 5:38 am
Should a Modbus TCP client expect exception messages that consist of only the PDU and have no MBAP header?
Allen Bradley 9/series - ODS Software
Posted by BasNexusAB on 30 August, 2019 - 4:51 am
In need of ODS (Offline development System) software - Allen Bradley !!
Simocode Data Collector Module
Posted by HoneyMae on 30 August, 2019 - 2:46 am
Simocode Data Collector Module to gather 50 pcs of Simocode Controller.
1
reply
PC to PLC Communications
Posted by paul28 on 29 August, 2019 - 5:00 pm
Getting the PC and PLC talking after replacing old battery
2
replies
Modbus RTU Send Message
Posted by daemonlies on 29 August, 2019 - 5:49 am
Trying to work out what response i should get from a Modbus RTU by sending a hex message
Calculating the Blind Spot of Radar Liquid Level Transmitter
Posted by Holykell on 28 August, 2019 - 10:40 pm
How to calculate the blind spot of radar liquid level transmitter?