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Engineering
Topic: Engineering and workplace issues.
from the Why is my cable's shield 'Hot'? department...
The shield shocked me!!!
Originally posted by Fluoronator on 11 June, 2014 - 7:42 am
Why is my cable's shield 'Hot'?
New Replies:
welcome to the world of ground loops! They are especially common and trouble shooting is always...
Topic: Communications systems and equipment.
from the IEC department...
measurements in Siemens SICAM AK1703
Posted by elabbassy on 11 June, 2014 - 9:32 am
measured values cyclic transmission IEC 104
Posted by Francesco on 10 June, 2014 - 12:03 pm
How to limit the output signal of an unstable control to avoid actuator saturation.
Topic: Engineering and workplace issues.
from the Forum department...
Control Valve Positioner
Posted by Gagandeep Singh on 10 June, 2014 - 5:51 am
Inlet air pressure of smart positioner is varying
Topic: Engineering and workplace issues.
from the instrumentation department...
Loop calibration for 2 wire loops
Originally posted by - on 3 April, 2014 - 3:02 am
Loop Calibration for 2 wire loops from calibrator that gives 24VDC loop output power
New Replies:
By Heinrich Baumann on 9 June, 2014 - 3:44 pm -
> How to do loop calibration of 2 wire loops. For loop calibration of 2 wire loops you need a...
Topic: Power generation equipment control.
from the Forum department...
Power supply impedance
Posted by Sam on 9 June, 2014 - 5:21 am
How do I find the impedance of a 220VAC power supply
Topic: Local and wide area networking in factory automation.
from the HART multidrop department...
HART multidrop reliability
Posted by Franco Kew on 9 June, 2014 - 12:52 am
If one HART device fails, will the subsequent HART devices unseen from the system?
Topic: Engineering and workplace issues.
from the Electrical Motor department...
DOL starter Motor to convert Drive control motor
Posted by Rakesh on 8 June, 2014 - 2:16 pm
Need to change with a 37 KW DOL starter (3 Wire) winding to suitable soft starter or drive control to reduce starting load.
Topic: Motion control, servos, steppers, etc.
from the Forum department...
VVVF drives - Internal speed calculation
Originally posted by Setu on 7 June, 2014 - 9:40 pm
How is speed of the motor calculated INTERNALLY by a VVVF drive?
New Replies:
As per my understanding for drives without encoders the drive calculates the actual speed based on...
Topic: Engineering and workplace issues.
from the Automation department...
interview questions automation engineer
Originally posted by EG on 6 June, 2014 - 4:19 am
need interview questions and answers for automation engineer
New Replies:
Well, if you are the interviewer, just bow down and let the engineer tell you what you need to...
Topic: Engineering and workplace issues.
from the Electrical department...
Motor sizing
Posted by krishnan on 7 June, 2014 - 8:51 am
three phase motor sizing for pumps/compressors
Topic: Engineering and workplace issues.
from the Barriers department...
Active and Passive Barriers
Originally posted by sreeraj on 21 June, 2008 - 4:11 pm
Difference between active and passive intrinsic safety barriers
New Replies:
> Can anyone give the difference differences between active and passive > barriers. Why and...
Topic: Power generation equipment control.
from the Transformer Design department...
Transformer Secondary Voltage Ratings
Originally posted by Amrit on 1 June, 2014 - 6:56 pm
Questions about transformer secondary voltage ratings
New Replies:
Amrit... i) If load varies +)/(-) 10%, then RMS-load calcultaion, involving duration of...
Topic: Power generation equipment control.
from the me department...
Why use SRV?
Originally posted by iii on 1 June, 2014 - 8:59 pm
There is a SRV where we generally found a very little difference between inlet & outlet of this valve.
New Replies:
DAMENE AMAR, Long time no hear from you; welcome back. Basically, to accomplish what you want...
Hi all, I agree CSA about the use of SRV. My question is simple. What is the difference...
Originally posted by Amin on 30 May, 2014 - 1:52 am
Steam turbine rotor (back-pressure steam turbine) - rotor axial movement towards inactive side. Why?
New Replies:
Hi Amin, some questions, further to JFB's questions: 1. has the steam turbine been living...
was the coating of "oil lacquering on the inactive thrust pad's face? did you measure any...
Topic: Continuous process industries, DCS questions.
from the Engineering department...
Three way valve - on/off
Originally posted by Josh on 29 May, 2014 - 4:53 am
Three way valve - on/off control design
New Replies:
Dear Sir, Thank you for your advice. I have contacted valve manufacturer. As you explained...
Josh, There are many types of three-way valves with double-acting actuators for many different...
Topic: PLCs and related questions.
from the I&C department...
Multiple Mode VFD Selection
Originally posted by tranh2 on 10 July, 2013 - 5:23 pm
How do setup so that drive can operate in different modes.
New Replies:
Hello, This may be the stupid answer. What about using one aux. contactor with 2NO + 2Nc and...
Topic: Software, including programming, OS issues, etc.
from the Forum department...
Instrument Tech Training Topics
Originally posted by GBrown on 29 May, 2014 - 4:50 pm
My boss has asked me to create a training program from the instrument techs that is one 3 hour course a month for 2 years.
New Replies:
Providing a list of suggested topics to your intended audience is a great technique to spur a...
Topic: Engineering and workplace issues.
from the Electrical department...
VFD SPEED OF 60HP DRIVE
Originally posted by Sagat on 30 May, 2014 - 4:03 am
I am using AMTECH make VFD of 60HP for blower application.
New Replies:
Not sure there is a problem. Why do you care what the VFD does in situations it will never be used...
Topic: Motion control, servos, steppers, etc.
from the Forum department...
Pneumatic tubing colors
Posted by Rick Holman on 30 May, 2014 - 8:43 am
pneumatic control circuit tubing color code standards
Topic: Communications systems and equipment.
from the Forum department...
ModbusTCP Test Software
Originally posted by GBrown on 5 August, 2013 - 3:32 pm
Looking for ModbusTCP Master Test simulation software that will work on Windows 7 and Windows 2008 Server.
New Replies:
You can use Modbus Master software you can find at www.automationcorner.com. It is Visual Basic...
Topic: Information resources, documentation.
from the Old stuff department...
Toshiba Automation Co PRS equipment
Posted by me on 29 May, 2014 - 8:28 pm
Looking for any information on Toshiba PRS system
Topic: Engineering and workplace issues.
from the Instrumentation department...
Yokogawa CS1000 Report problem
Posted by kuldeep on 29 May, 2014 - 4:51 pm
report tag communication error
Topic: Engineering and workplace issues.
from the Trippy Department department...
CMS (GE) Anti-Surge Controller
Originally posted by Moaz Tajammal on 27 May, 2014 - 9:15 am
Anti-Surge Controller acting weirdly.
New Replies:
It opens the valve up to 3% and then as we close the rack room, increase its cooling the controller...
Dear Tajammal, CMS has a tendency to induce error in cards when heated. How much is the error?...
Topic: Engineering and workplace issues.
from the Electrical Engineer department...
VFD Speed
Originally posted by Sagar on 26 May, 2014 - 5:45 am
Over speeding a motor by reference signal even if the frequency limit has been set in the VFD module
New Replies:
Thanks Steve...
Shouldn't be. Every ABB drive I'm familiar with respects the limits regardless of any other...
Originally posted by Alphite on 28 May, 2014 - 4:25 pm
How to control flowrate and pressure with a positive displacement pump.
New Replies:
A positive displacement pump is essentially a constant-flow device, with discharge pressure...
Topic: Engineering and workplace issues.
from the Forum department...
Is Barrier Requirements
Originally posted by Tom on 28 May, 2014 - 5:03 am
IS Barrier Requirements for PLC
New Replies:
The answer is that you have not provided an adequate amount of information to answer the question. ...
Originally posted by hatimnazir on 27 May, 2014 - 3:12 pm
Honeywell DCS Server and Stations timing Synchronization Issue
New Replies:
Experion LX Supplementary Installation Tasks Guide Setting up time synchronization .... pages 9-17...
Topic: Sensor technologies.
from the automation department...
Leary M06 Microwave Sensor
Posted by me on 27 May, 2014 - 11:14 am
Looking for information on the M06 Microwave Sensor from Leary
Topic: Engineering and workplace issues.
from the Private department...
Buffer Air Quality
Originally posted by Jhon on 21 May, 2014 - 10:05 am
Buffer air for sealing in dyno or centrifugal compressors.
New Replies:
Hello Friends; I am still waiting for the guideline. Thanks >We used a buffer air for...
Originally posted by Rajesh on 2 December, 2008 - 3:43 am
Induction motor running beyond rated speed
New Replies:
I don't think speed will go beyond rated speed if we have already fix the limit in the VFD....
Topic: Engineering and workplace issues.
from the anti surge control department...
Anti surge valve and enabling solenoids
Posted by islam84 on 25 May, 2014 - 5:43 am
Why is the anti surge valve associated with two enabling solenoids?
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