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Forum Archive
ABB 800xA Operator Station Disabled. Unable to Connect Operator Station
Posted by ABB 800xa on 15 August, 2014 - 10:03 am
Our ABB 800xA DCS server restarted automatically. During restart, all operator stations hung. Unable to connect. Need help resolving the problem.
Modbus Register Address
Posted by Whitepage on 15 August, 2014 - 4:30 am
I have a question about entering the register address in our program PME when I have a 4-digit address.
Re: Replace RS-485 with Siemens Profibus Cable
Posted by Curt Wuollet on 14 August, 2014 - 9:15 pm
I am building a Modbus RTU network and am considering replacing RS-485 cable with Siemens Profibus cable. Want to hear from those who have done this.
Can a Low-Temperature Gas Cause the ESD Valve to Close?
Posted by KOKORI on 14 August, 2014 - 6:38 pm
Does a low temperature gas from the Water Bath Heater causes the Emergency Shut Down valve to close?
PQM II Setup for Generator
Posted by Chris IWO on 14 August, 2014 - 5:28 pm
Configuring a GE PMQ II for metering the power readings. Can anyone help with the specification I need to enter into the PQM?
Replace RS-485 with Siemens Profibus Cable
Posted by JIMMY SALDIVIAS on 14 August, 2014 - 12:24 pm
I am building a Modbus RTU network and am considering replacing RS-485 cable with Siemens Profibus cable. Want to hear from those who have done this.
Steam Turbine Gear Box
Posted by Rangacharya on 14 August, 2014 - 2:29 am
15 MW Steam turbine gear box has high vibration at 3 to 4 MW load. What is the probable reason for this phenomenon?
Electrical Dynamo Fails When the Load is On
Posted by syednifty on 13 August, 2014 - 4:30 pm
Electrical dynamo is failing when the load is on.
Honeywell DCS & ESD Load Calculation
Posted by mostafa qasemi on 13 August, 2014 - 2:02 pm
CPU load calculation for control modules (in C300).
What Constitutes a Cycle for Preventative Maintenance Purposes?
Posted by Gerald Beaudoin on 13 August, 2014 - 12:09 pm
A manufacturer of a valve and actuator specs the life at 2 million cycles and defines a cycle as 0-90 % movement. If a valve sits all day oscillating around 50-60, what constitutes a cycle for preventative maintenance purposes?
Re: Translator Assistance Please, Ajuda Por Favor
Posted by Walt Boyes on 13 August, 2014 - 10:26 am
Looking for a Portuguese speaker to help with purchasing products from a Brazilian company.
Ruston TA1750
Posted by Control Engineer on 13 August, 2014 - 8:23 am
Information request for Ruston TA1750
RS-485 cable recommended reference
Posted by bammaroc on 13 August, 2014 - 6:33 am
RS-485: Reference recommended cable for Modbus communication between DCS and MVI94-MCM systems or PLC
GE TIL 1480-2R1
Posted by Ramesh on 13 August, 2014 - 5:08 am
Can someone please tell me what is the text of GE TIL 1480-2R1? What exactly does it say?
Loss of Cooling Water to Steam Turbine Condenser
Posted by sriram sandep on 12 August, 2014 - 7:13 pm
What will happen in special circumstances when there is a loss of Cooling water supply to the condenser
GE Frame 7EA Combustion Turbine Starting Motor
Posted by Bill Futch on 12 August, 2014 - 4:08 pm
Starting motor does not cutout when a normal shutdown is given below 60% speed.
Questions about Designing a Gas Processing Plant - student project
Posted by Benjamin on 12 August, 2014 - 3:39 pm
I need advice about a gas processing plant I'm trying to design, as an exercise.
Sending and Receiving Commands in Master Slave Configuration
Posted by marinus on 12 August, 2014 - 3:51 am
Master and slave principe with exchanging information thru PLC network
GE Fanuc RTU LM 90 Communications Software
Posted by Chris IWO on 12 August, 2014 - 12:08 am
Set up of Master RTU PLC to communicate with Remote Telemetry PLCs
Frame 9e Spike
Posted by PC on 11 August, 2014 - 6:15 pm
Frame 9e dwatt control
Control Valve Position Command Signal
Posted by Gary on 11 August, 2014 - 2:28 pm
Looking for a device that generate control valve position signal for open loop control
Calculating Input Current
Posted by Srbrg on 11 August, 2014 - 1:37 pm
Calculating the input current to PLCs for Armorblock - 1732E-IB16M12SOEDR
Profibus interface ABB DI801 slave with SST-PFB-CLX master
Posted by Robert Perez on 11 August, 2014 - 8:33 am
Connecting an ABB DI801 profibus to module-bus slave gateway with a SST-PFB-CLX master
Student project- problems using Matlab's filter command
Posted by Javier Fontalvo on 10 August, 2014 - 9:46 pm
Trying to obtain parameters from given data using least squares. Things don't go so well
Can OPC-UA replace DNP3 for telemetry and SCADA?
Posted by Yousif on 10 August, 2014 - 8:29 am
What is the difference between OPC-UA and DNP3 protocol specially in low level layers?
GE MS6001B exhaust over temperature
Posted by ahmed on 10 August, 2014 - 5:04 am
have a problem of over exhaust temperature in GE MS6001B unit lead to the unit goes into temperature control mode during start up
RTU Errors in GE Fanuc LM 90 30
Posted by Chris IWO on 9 August, 2014 - 5:52 pm
Lost of Slave RTUs - need help understanding error messages
weight measurement from DP tx
Posted by bipin on 9 August, 2014 - 1:47 pm
weight measurement in a liquid tank which has different densities
Atomizing air cooler modification
Posted by Izhar on 9 August, 2014 - 3:29 am
Atomizing Air Cooler Modification
Steam turbine Bypass Locks
Posted by raul on 9 August, 2014 - 2:45 am
Approximate number of steam bypass locks
Translator Assistance Please, Ajuda por favor
Posted by Curt Wuollet on 8 August, 2014 - 11:44 am
Looking for a Portuguese speaker to help with purchasing products from a Brazilian company
HC900 C50 Controller version 1.0x firmware upgrade to higher version.
Posted by Jeff Julian on 8 August, 2014 - 8:38 am
Is there a way of upgrading our HC900 C50 Version 1.0x to a higher version to take advantage of its features w/o changing the cpu?
SCADA and HV/LV distribution substation automation
Posted by scientif on 8 August, 2014 - 6:32 am
How to automate HV/LV distribution substations using SCADA.
Equation for Flow conversion in DCS
Posted by Aravazhi on 8 August, 2014 - 3:55 am
Need help calculating the DP flow in m3/hr. Have most of the equation.
Mode 1 and Mode 2 in Turbine Control System
Posted by Chris Wehr on 7 August, 2014 - 7:42 pm
Looking for descriptions/definitions of Mode 1 and Mode 2
Null Current of Integrating Actuator
Posted by Gary on 7 August, 2014 - 11:49 am
What is the null current of an integrating actuator?
Honeywell XNX voltage drop
Posted by Saurabh on 7 August, 2014 - 7:52 am
Honeywell XNX shows voltage drop after connecting the TX
voltage variation with load variation on generators
Posted by henry lob on 7 August, 2014 - 7:24 am
increase in voltage with increase in load tripping tools
Equal Percentage Valve
Posted by Vignesh on 7 August, 2014 - 5:03 am
Why equal percentage control valve is commonly used in steam line?
PSVO servo control module
Posted by N.V.Q on 7 August, 2014 - 4:47 am
Mark VI hardware system---PSVO servo control module
Gas Turbine Gearbox Bearing Damage
Posted by Izhar on 6 August, 2014 - 12:53 pm
Possible causes for gas turbine gearbox bearing damage
Relationship between VLSI & Embedded Hardware Design...
Posted by Rushi Shroff on 6 August, 2014 - 10:20 am
Design of Digital Systems, System Architectures, Hardware description Languages required for VLSI Design such as VHDL and Verilog.FPGAs, CPLDs, ASIC Design Issues, CMOS Technology, VLSI Design techniques & Relationship with embedded hardware.
Communications between AB PLC and Siemens HMI
Posted by Debo on 6 August, 2014 - 3:25 am
AB PLC cannot communicate with Siemens TP1200 HMI over ethernet i/p. PLC and HMI are in different gateways.
Transferring Parameters from BOSCH 120
Posted by Patxi on 5 August, 2014 - 1:17 pm
How to transfer the parameters and programs from the BOSCH CC120 to/from a PC?
Siemens Siwarex U zeroing problem
Posted by hanninpe on 5 August, 2014 - 5:57 am
Zeroing Siwarex U with SFC58 fails randomly, what could cause?
Looking for mA to Ohm Converter
Posted by Abhi on 5 August, 2014 - 4:22 am
Looking for a device that can convert 4-20 mADC or 0-10 VDC to 1~5 KOhms.
Temperature Controller Problem
Posted by mahmoud on 5 August, 2014 - 4:09 am
Problems reading RKC temperature controller.
Modbus interface with T3000
Posted by control on 4 August, 2014 - 8:53 pm
Other than Siemens device to interface with Siemens T3000 for modbus communication
Mark VIe control system
Posted by N.V.Q on 4 August, 2014 - 8:26 pm
Mark VI steam turbine and generator control system
Interfacing of a Transmitter directly to a PC
Posted by Vinay on 4 August, 2014 - 8:17 am
To be able to display a process value directly in a PC without using PC based SCADA system
Re: Choice of a Embedded Processor: DSP or Micro controller
Posted by Rushi Shroff on 3 August, 2014 - 10:46 am
Choice of a Embeddded Processor : DSP or Micro controller for Industrial Automation System
DLN-1 Lean lean & extended lean lean mode of operation
Posted by AR1969 on 3 August, 2014 - 6:42 am
What is the Maintenance factor (MF) for lean lean mode of operation, GE specifies a MF of 10 for Extended lean lean (high load) but does not specify the MF for lean lean mode (part load).
Power factor compensation
Posted by Ram on 2 August, 2014 - 6:06 am
How does reactive power compensation work?
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.
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.
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
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.
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?
Read/Write serial port using php
Posted by vasudevan on 31 July, 2014 - 6:22 am
Read/Write from windows serial port using php
Orifice Tapping Point
Posted by amanemisa on 31 July, 2014 - 4:35 am
Orifice tapping point for additional DP flow transmitter
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.
VFD Pump Control
Posted by raynvd on 30 July, 2014 - 9:03 am
Is VFD pump control faster than pneumatic valve control
Control Valve Questions
Posted by Anil Bathra on 30 July, 2014 - 3:49 am
fail safe position of control valve
KOYO vs ADC memory type
Posted by Eric on 29 July, 2014 - 3:50 pm
KOYO and ADC - what do they stand for?
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?
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.
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.
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
Re: 9fa Gas Compartment Vent Fan 88vl
Posted by Meganathan S on 28 July, 2014 - 2:14 am
Improper ventilation in gas compartment
MARK VIe Thermocouples
Posted by Yassar on 27 July, 2014 - 1:53 pm
Questions about thermocouples and MARK VIe
Re-calibrating Rosemount Transmitters
Posted by shep on 25 July, 2014 - 8:52 pm
Re-calibrating Rosemount Transmitters after power is removed?
3A Convenience Receptacle
Posted by Russ Miller on 25 July, 2014 - 3:59 pm
3A Convenience receptacle requirement.
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.
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?
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
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
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
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.
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
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
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
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
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
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
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?