Today is...
Friday, December 19, 2014
Welcome to Control.com, the global online
community of automation professionals.
Advertisement
Featured Video...
Featured Video
A quick introduction to EtherCAT for motion control and I/O...
Advertisement
Our Advertisers
Help keep our servers running...
Patronize our advertisers!
Visit our Post Archive
Forum Archive
6
replies
Power factor compensation
Posted by Ram on 2 August, 2014 - 6:06 am
How does reactive power compensation work?
2
replies
RS485 Issues - Modbus Temperature Controller to Ethernet
Posted by Plutonius on 1 August, 2014 - 9:08 pm
I am currently have a bit of an issue connecting to a Love 2600 temperature controller via RS485 full duplex with a Grid Connect NET485 Modbus RTU to TCP ethernet bridge.
1
reply
2 Wire Loop Powered Transmitter
Posted by Lc1 on 1 August, 2014 - 11:38 am
Powering a 2 wire loop powered transmitter
Controling an 8Kw electric heater
Posted by Ken on 1 August, 2014 - 10:19 am
Bought old never used 8Kw ceiling mount electric heater, trying to figure wiring.
8
replies
Heavy Mist/oil leaking from GE frame 9 mist Eliminator
Posted by humble3 on 1 August, 2014 - 6:45 am
Our mist eliminator is bringing out heavy mist which then condensate back to oil - causing serious oil shortage
Send And Recieve data between To S7-1200 Plc's
Posted by Donovan on 1 August, 2014 - 3:15 am
Need Help on how to transfer data between two S7-1200 Plc's
1
reply
GT unit was tripped from the HVAC short circuit
Posted by sreekanth on 1 August, 2014 - 12:55 am
The GT frame 6b and the control system is MARK VI TMR unit was tripped from the HVAC short circuit.
1
reply
Need a siemens expert
Posted by Curt Wuollet on 31 July, 2014 - 4:33 pm
Can I replace a toasted analog module on a S7-224 without having the program?
1
reply
Read/Write serial port using php
Posted by vasudevan on 31 July, 2014 - 6:22 am
Read/Write from windows serial port using php
1
reply
Orifice Tapping Point
Posted by amanemisa on 31 July, 2014 - 4:35 am
Orifice tapping point for additional DP flow transmitter
2
replies
Surge protection trip for V64.3A model Ansaldo make Gas Turbine
Posted by any author on 31 July, 2014 - 3:40 am
Gas Turbine power station has tripped on surge protection many times due to grid frequencies variation from 50Hz to 49.2Hz.
1
reply
VFD Pump Control
Posted by raynvd on 30 July, 2014 - 9:03 am
Is VFD pump control faster than pneumatic valve control
2
replies
Control Valve Questions
Posted by Anil Bathra on 30 July, 2014 - 3:49 am
fail safe position of control valve
1
reply
KOYO vs ADC memory type
Posted by Eric on 29 July, 2014 - 3:50 pm
KOYO and ADC - what do they stand for?
2
replies
Genius Bus
Posted by Chris IWO on 29 July, 2014 - 2:35 am
Lost of Genius Bus LAN
Bypass Valve Fail Position
Posted by song on 29 July, 2014 - 1:25 am
What is the moist suitable failure position for turbine bypass valve?
4
replies
New to the motion world
Posted by raph_rf on 29 July, 2014 - 12:04 am
Hello I have a new project with 11 axes of motion (Servos) and need advice on one of three options.
10
replies
Mark VIe logic block
Posted by N.V.Q on 28 July, 2014 - 10:43 pm
Time_Sec block in Mark VIe system.
Null current shift in hydraulic proportional actuator
Posted by Asko on 28 July, 2014 - 4:09 pm
Impact of null current shift in proportional electric actuator
Piezo and Torquemotor based Valve positioners
Posted by AS on 28 July, 2014 - 4:01 am
Properties of Torquemotor and piezo based valve positioner. Function of Spool Valve in Valve Positioners.
2
replies
Standby AC power supply for power plant
Posted by masoud on 28 July, 2014 - 2:36 am
Which is a more reliable AC backup power supply UPS or Inverter?
LQR Command and failed stabilization
Posted by Sara khaan on 28 July, 2014 - 2:29 am
Getting errors when using dlqr command for my state space equation
1
reply
Re: 9fa Gas Compartment Vent Fan 88vl
Posted by Meganathan S on 28 July, 2014 - 2:14 am
Improper ventilation in gas compartment
1
reply
MARK VIe Thermocouples
Posted by Yassar on 27 July, 2014 - 1:53 pm
Questions about thermocouples and MARK VIe
1
reply
Re-calibrating Rosemount Transmitters
Posted by shep on 25 July, 2014 - 8:52 pm
Re-calibrating Rosemount Transmitters after power is removed?
2
replies
3A Convenience Receptacle
Posted by Russ Miller on 25 July, 2014 - 3:59 pm
3A Convenience receptacle requirement.
6
replies
Lube oil level
Posted by Yassar on 25 July, 2014 - 2:55 am
Lube oil level dropping as temperature increases
Displaying PF525 VFD drive faults via Stratix
Posted by Raymond Laib on 24 July, 2014 - 9:55 pm
PF525 VFD drive faults via Stratix 8000 to be displayed on a HMI.
1
reply
Using Synthetic Oil in Gas Generator
Posted by GE on 24 July, 2014 - 8:55 am
Why use synthetic oil in GE LM 2500 gas turbine?
12
replies
IGV for DLN Type Without IBH
Posted by ABDI on 24 July, 2014 - 1:56 am
If a turbine has DLN (Dry Low NOx) combustors, IGV exhaust temperature control is not operator-selectable. Is it always on?
FFL instruction weird behaviour
Posted by Daniel on 23 July, 2014 - 3:00 pm
FFL instruction sometimes doesn't load data into FIFO
1
reply
ATEX certified 24VDC fan
Posted by Daniel on 23 July, 2014 - 1:01 pm
Looking for a supplier for a small 24VDC (or 230VAC) Ex-d or Ex-e fan
VFD and nominal RPM of motor
Posted by yazooka on 23 July, 2014 - 8:47 am
Nominal RPM on motor plate lower than can be set in VFD
3
replies
Problems with air intake and dirty turbine
Posted by Arianna Mambrini on 23 July, 2014 - 4:30 am
Air intake filters clean but turbine dirty
2
replies
1oo2 voting for temperature transmitter
Posted by christine on 23 July, 2014 - 4:30 am
1oo2 voting for temperature transmitter
Selection of VCB as per short circuit current
Posted by Shaheed on 23 July, 2014 - 3:22 am
Do we need to replace the VCB of a machine with higher short circuit rating if more machines add parallel at same bus bar.
Communication Error with MODBUS DCS RTU
Posted by michael on 22 July, 2014 - 3:04 am
MODBUS over ethernet connection between yokogawa DCS and abb rtu anr96 has a communication error after several minutes.
11
replies
Generator and Capacitor Bank
Posted by fluidflow on 22 July, 2014 - 1:04 am
Totally stumped by the recent brawl over utility of capacitor bank in power generation.
S7-1500 CM541 Serial RS232 ASCII help
Posted by Suraj on 21 July, 2014 - 11:00 pm
Point to point Serial RS232 ASCII communication in TIAV13
1
reply
Modbus RTU utilities
Posted by viks on 21 July, 2014 - 2:28 am
help needed in finding the software facilitating reading data from the sensors via RS485 into industrial computer and providing it for a SCADA application.
GE Fanuc rx7i PLC Not Going into Run Mode
Posted by majji raju on 21 July, 2014 - 1:27 am
PLC goes into halt mode after detecting 'CONTROLLER CPU HARDWARE FAILURE' fault
2
replies
Simple model-based control example
Posted by Rupert on 20 July, 2014 - 2:25 pm
MPC example
Gas Turbine Negative Lean Lean Mode
Posted by moiz on 20 July, 2014 - 8:52 am
Want to know about negative lean lean mode of gas turbine
Flange Adaptor and Isolation for Press Transmitter
Posted by Josh on 19 July, 2014 - 11:45 pm
Mismatching flange between tank nozzle and transmitter
2
replies
Understanding Control Specification for Gas Turbine
Posted by SB on 19 July, 2014 - 4:51 pm
Please help understanding control specification of GE-design heavy duty gas turbine
19
replies
Exit Guide vanes of Gas Turbines
Posted by Izhar on 19 July, 2014 - 4:24 pm
Gas turbine exit guide vanes and how to use them
2
replies
Communication between DCS CS 3000 and Allen Bradley FlexLogix 5434
Posted by bammaroc on 18 July, 2014 - 1:45 pm
communication between DCS CS 3000 and Allen Bradley platform FlexLogix 5434 using Modbus protocol
2
replies
Control Wire Shielding with Clear Shrink Tubing
Posted by dbnaca on 17 July, 2014 - 4:27 pm
Is there a code requiring the use of clear heat shrink tubing on the shield wire for control cabling?
Seismic Qualifications and Equipment Qualifications in NPP
Posted by tommycai on 17 July, 2014 - 3:26 am
Are there standards for EQ/SQ In NPP?
Calibrating a Vibration Monitor
Posted by RAJESH on 16 July, 2014 - 5:32 pm
How to calibrate velometer in vibration?
2
replies
Field Balancing
Posted by Jhon on 16 July, 2014 - 2:03 am
High vibration problem on a two shaft gas turbine. Need help on Field Balancing.
Centum VP Logic
Posted by mmsystems on 16 July, 2014 - 1:51 am
write a logic for PUMP
Torque Feedback not resetting in ALSPA CONTROCAD HMI
Posted by KmnsKiran on 15 July, 2014 - 10:19 pm
While operating a MOV from engineering station by forcing its output open and close commands, its feedback is coming in HMI and Eng station. But close torque is not getting reset in HMI.
Problems with ABB DigiVis/Excel Reports
Posted by TiB0 on 15 July, 2014 - 5:33 am
ABB DigiVis crashes after several hours with DataLog via Excel Reports
Operation of Shutdown and Blowdown Valves
Posted by Gopinath on 15 July, 2014 - 3:20 am
Can anyone explain the shutdown valve (SDV) & Blowdown valve (BDV) operation?
1
reply
Evaporator cooler pumps having problem in GE 7FA
Posted by kiran on 14 July, 2014 - 9:23 pm
Frequently losing suction by pumps and pump discharge flow switch failing.
switch broken on PLC. Can this be fixed?
Posted by Ignacio Castaneda on 14 July, 2014 - 2:13 pm
Broken switch on PLC
Synchronising Two Gas engines to share a load
Posted by Sam on 14 July, 2014 - 12:51 pm
Software and hardware required to enable two Gas Engines in Parallel mode operation to share the load in island operation?
RSLinx help - loop - image
Posted by rileydc on 14 July, 2014 - 12:14 pm
Loop help
4
replies
Field-bus Actuator Recommendation
Posted by Carlos Loureiro on 14 July, 2014 - 10:07 am
Looking for recommendations for a Field-bus Actuator
4
replies
lube oil level
Posted by syed on 14 July, 2014 - 9:24 am
Which Lube oil tnk level to be used: Absolute or relative
12
replies
Compressor Thrust
Posted by Izhar on 13 July, 2014 - 2:59 pm
What direction is the total thrust in a gas turbine?
3
replies
Single Controller for a Flow and Pressure Control Valve
Posted by ANA on 12 July, 2014 - 3:11 pm
Single controller for multiple purposes
2
replies
what does the "CROSS-TALK" mean?
Posted by shunli on 12 July, 2014 - 11:20 am
Please define Cross Talk and PCC
1
reply
Operation of speed control loop FSRNV3
Posted by saha on 12 July, 2014 - 7:45 am
Operation of speed control loop FSRNV3
38
replies
Getting a better understanding of GT control PART 2
Posted by Neo on 11 July, 2014 - 10:48 pm
Getting a better understanding of GT control PART 2.
Mark VIe Cimplicity Command Freeze
Posted by Trimate on 11 July, 2014 - 12:51 pm
I have some problems regarding Mark VIe Cimplicity Software that its command cannot be activated (freeze status).
Siemens PLCs
Posted by Reeny on 11 July, 2014 - 12:26 pm
steady red EF BF LEDs after trying to connect S7-400 cpu414 to pc (5611 pci card), the remedy?
1
reply
Installing muffin fans
Posted by Overamoed on 11 July, 2014 - 11:27 am
Best way to install muffin fans.
Research on sensors
Posted by Adom David on 11 July, 2014 - 5:00 am
Calculation of Reliability and MTBF OF SENSORS
10
replies
Dew Point temperature of Natural Gas
Posted by Lucky on 11 July, 2014 - 2:49 am
How to calculate the dew point temperature of the Natural Gas?
VFD AC Motor Issue
Posted by Franco Kew on 10 July, 2014 - 10:06 pm
Starting and running an ABB type AC motor
VTScada 11 hmi software? Any thoughts
Posted by Anonymous on 10 July, 2014 - 12:27 pm
Looking for feedback on anyone who has integrated systems using this software.
2
replies
FSR Startup Temperature
Posted by saha on 10 July, 2014 - 10:43 am
Compressor Discharge temperature & FSR startup (FSRSU)relationship
1
reply
Calibrating SRV with HR pump
Posted by Not the real CSA on 9 July, 2014 - 7:45 pm
What is the correct procedure for calibrating SRV with HR pump
5
replies
Problem with modbus getway
Posted by Not the real CSA on 9 July, 2014 - 5:32 pm
Communicating with Mark VI via HMI or getway
4
replies
DLN1 facing secondary flame out during premix to lean lean
Posted by SSV on 9 July, 2014 - 2:01 pm
DLN1 facing secondary flame out during premix to lean lean
4
replies
GE Mark VI/VIe HMI and Software Questions
Posted by Kevin on 8 July, 2014 - 8:17 pm
Specific questions about Mark VI and VIe.
electrical servo drives health check
Posted by Grimreaper on 8 July, 2014 - 5:05 pm
On site servo drives health check
SIS Control
Posted by Amit on 8 July, 2014 - 3:47 am
Incorporation of control and protection function in SIS
3
replies
difference between AFQ & AFQD signals for GE turbine
Posted by Ali on 7 July, 2014 - 10:09 pm
GE MARK VI for 7F DLN2.6 Machines
How to learn DCS System?
Posted by A Nasser on 7 July, 2014 - 12:57 pm
How to learn DCS System?
4
replies
Cannot Print alarms from MKVI control system
Posted by Nguyen Thanh Son on 7 July, 2014 - 12:18 pm
problem: Cannot Print alarm messages in MKVI control system
4
replies
Frame 9E Gas Turbine
Posted by Izhar on 7 July, 2014 - 11:52 am
Frame 9E gas tubine impulse/reaction stages and special coating on compressor stages.
1
reply
Socomec DIRIS A40 Modbus RS485 Problem
Posted by MH on 7 July, 2014 - 7:20 am
Socomec DIRIS A40 RS485 ModBus communications problem
5
replies
EX2000 Fault : ST 717_ _PS AC IN and FL 711_ _MCP SYNC
Posted by electricalman on 7 July, 2014 - 3:58 am
We have EX2000 with static exciter type which is installed on our Steam Turbine Generator, made by GE.
6
replies
Reading Hot Thermocouple
Posted by RAJESH on 6 July, 2014 - 4:34 pm
Does a hot thermocouple in junction box give an actual reading?
1
reply
hand off auto - wiring a mcc bucket
Posted by alancars on 6 July, 2014 - 3:37 pm
does hand mean hand or Auto?
Beckhoff BC9000 FB_SNTP Clock Synchronization
Posted by Actarus800 on 6 July, 2014 - 11:44 am
Beckhoff BC9000 FB_SNTP Clock Synchronization
1
reply
FSR control frequently balancing
Posted by Mahdi on 6 July, 2014 - 11:34 am
FSR control frequently balancing between minimum fuel, acceleration and speed load
6
replies
MARK-VIE SOE ALARM
Posted by V K GUPTA on 6 July, 2014 - 9:00 am
MARK-VIE SOE ALARM APPEARED FREQUENTLY IN GT RUNNING OR STOP CONDITION
Excitation alarm rotor current limit high
Posted by ashiq on 6 July, 2014 - 8:13 am
Excitation system triggered rotor current limit high alarm
Siemens PLCs s7-400 backup
Posted by Reeny on 6 July, 2014 - 7:36 am
Creating a backup for an s7-400
Electrical Engineering-Protection
Posted by Santanu Das on 6 July, 2014 - 2:25 am
Is it true that during short circuit of 3Phase line no zero sequence current will flow?
1
reply
Electrical Engineering-Transformer
Posted by Santanu Das on 6 July, 2014 - 2:22 am
Is there any formula for calculating the number of turns in each side of a transformer??
Alstom ALSPA P320 HDSR
Posted by Sajan Shrestha on 5 July, 2014 - 11:57 pm
Accessing historical data base when using Alstom ALSPA P320 HDSR in Virtual Machines
4
replies
IGV position Trouble
Posted by samtronic on 4 July, 2014 - 4:48 pm
IGV feed back error
Reading or writing Text (string) from OPC in CS3000
Posted by ANWESHA on 4 July, 2014 - 11:09 am
Is it possible to Read 'Text/string' data from OPC into Yokogawa CS3000 system?
1
reply
Limit switch
Posted by Kevlonski on 4 July, 2014 - 8:51 am
Looking for limit switch compatibility between VDC and VAC
6
replies
DP to Flow conversion
Posted by kamaraj on 4 July, 2014 - 6:13 am
can we directly configure square rooted DP (4 - 20mA) from DP transmitter to flow