2-Wire Network Recommendations
Asking for recommendation for a networking framework that uses existing unshielded twisted pair.
By Ikhtiander on 23 October, 2016 - 3:17 am
Hi Nuatn, For point to point half duplex RS-485 using unshielded twisted pair cable with 120 Ft...
What is a rule of thumb setting for the busbar under-voltage relay time delay.
Turbine Not Attaining FSNL
Turbine fails to reach FSNL. It has been a long time since starting turbine.
Understanding the 52G automatic re-closure logic in MKV GE Frames gas turbines controls
Looking for information about the tuning parameters for a oil cooler control loop. It is being controlled by an ISA_PID MK-VI block.
Gas Flowrate and Volume Measurement
Disparity in volume of gas captured by barton chart recorder from a gas vending company and ABB totalizer used the gas fired power station.
PWM 4 to 20 mA Signal To Go To PLC
Connecting a sensor outputting 4-20mA PWM signal to an existing PLC that can only accept analogue 0-10V or 4-20mA signals and/or digital inputs
By Ikhtiander on 22 October, 2016 - 11:53 am
It was not clear on what you meant on PWM 4-20 mA , I guess there are 2 possibilities : 1. You...
Siemens T-3000 Reports Question
We're struggling with using T-3000 and creating useful reports.
Stator RTD Showing High Value During Running
Posted by Anurag Bhardwaj on 22 October, 2016 - 12:06 am
Ohm Stator RTD values for motor vary.
Steam Turbine Operated in Pressure/Power Control Mode
Posted by ThirstyMonkey on 17 October, 2016 - 5:45 pm
What are pros/cons when a steam turbine operates in pressure control mode and in power control mode?
By ThirstyMonkey on 19 October, 2016 - 3:58 pm
Thank you for your time and explanation, CSA! Yes, they help a lot! So, is it right to say...
data sheet about for TOHO TTM004 temperature control unit
By Mark A. Villon on 21 October, 2016 - 2:55 am
http://www.megatech.ro/doc/592/datasheet%20ttm-000_e.pdf try this one >I'm searching for...
Allen Bradley PLC as Ethernet/IP Adapter
Can Allen Bradley PLC be configured as Ethernet/IP slave or adapter?
By aan aan on 20 October, 2016 - 9:07 pm
Hello Madhumati, If I understand you correctly, your intention is to set up compactlogix PLC so...
By James Ingraham on 20 October, 2016 - 12:53 pm
No, a 1769-L33ER can not be configured as an EtherNet/IP slave or adapter. However, using produced...
best practice to secure modbus TCP
By smachin on 20 October, 2016 - 12:02 pm
Did anyone ever come up with a good solution to securing Modbus TCP devices? I am working on...
Monitoring and Controlling Central Air Conditioners
Questions about setting up automation project for central air-conditioning system
Gas Turbine Tripped on Rotor Axia Shifting but Parameter Normal
Siemens unit 136 MW Gas turbine V 94.2 running on base load and suddenly tripped on "Axial shifting Tripped". Parameters normal and under limit.
freewheeling diode description
By Skymist on 19 October, 2016 - 7:38 pm
>I've heard the term freewheeling diode thrown around when >someone is talking about an AC...
Machine Tripping on Negative Reactive Power Flow
The in house machine which is a 34.5 MW Gas turbine tripped on negative reactive power flow while conducting the load throw off test.
New to plc would like more information about addressing in PLCs
Problem with Allen Bradley 5/40 CPU
Posted by Mihir Ramkrishna on 18 October, 2016 - 11:57 pm
After maintenance, an different version of program was in processor after powering up PLC.
By Bob Peterson on 19 October, 2016 - 11:37 am
it is almost certain that someone had failed to update the eprom to what was in the PLC and the...
By Jeremy Pollard on 19 October, 2016 - 10:22 am
Probably loaded the program from eeprom which wasn't re-burned when the program was changed... that...
By aan aan on 19 October, 2016 - 9:54 am
Hi Mihir, I guess that your AB PLC-5/40 CPU module is installed with EEPROM that burned with...
Measuring differential level of sea water on transmitter band screen
Alternative method of measuring density (Mathematically)
MKIV R, S, T Communication Link Inoperative
GE frame6b Speedtronic drive by MKIV. In two machines suddenly happen <R>, <S>, <T> communication link inoperative in same time.
Automated Packing of Little Bags
Project is to solve automation of packing little "pieces" which are collected in big box.
Electronic Pressure Sensors
Different electronic sensors used recently for pressure transmitters. Any comparison for the advantage and most important the disadvantages (limitations) for each type?
MK5 studio has stopped working since upgrading our MK5 speedtronic to GE's new HMI with ST toolbox.
Has any site using micro switch for the compressor air bleed valve? Is yes please share the details.
Ex ia Low Voltage Power Supply
Looking for an [Ex ia] DC power supply with entity parameters; 4V < Uo > 8.4V; Io <= 200mA; Po <= 1.3W
Posted by Terence Sundgren on 14 October, 2016 - 11:31 am
Is it possible to use a synchronous generator in "motoring" mode to synchronize your power machine to the grid, and then start generating by putting power into your machine?
Medium Voltage Variable Frequency Drive for Motor Frequency Control
Doing research on medium voltage Variable Frequency drive (also called as VFD, VSD, AC drive, VVVF, etc.)
Creating redundant communication using Modbus and Yokogawa DCS with HMI Mark Vie
ABB ACS 1000 ac drive tripping on over speed. Which parameter will help to increase over speed limit?
PID Configuration of Minimum Flow Controller for Centrifugal Pump
For Centrifugal Pump PID minimum flow controller, is there a special way of configuring it different from normal PID flow controller??