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RFD Notification

REQUEST FOR DISCUSSION moderated group alt.hvac.pro-series.moderated This is a formal Request For Discussion { RFD } fo...
0 comments posted 20yrs
posted by tberlin
0 comments posted 20yrs posted by tberlin

Info Request Tangent Plus 1 & 2

I am looking for info on PID controller tuning methods: The tangent plus one point method and the two point method. Tri...
1 comments posted 20yrs
posted by address
1 comments posted 20yrs posted by address

Analog Alarm Deadbands

Hello there, I'm wondering if anyone has a bit of a typical rule for creating deadbands on analog alarms. I work with a...
3 comments posted 20yrs
posted by curtisk
3 comments posted 20yrs posted by curtisk

multiple Analogue outputs 4-20mA/Diodes in paralle

Hi, Can someone please help me with a small circuit. Im sure it sounds simple, yet i cant exactly get my head around it...
9 comments posted 20yrs
posted by blobawaca
9 comments posted 20yrs posted by blobawaca

Intrinsic Safety

Can anyone point me to a website that demonstrates on how to select the correct intrinsic safety barriers to suit instr...
10 comments posted 20yrs
posted by address
10 comments posted 20yrs posted by address

Understanding PID control

I am not a control engineer but I need to understand what PID control does. Where can I find a material to understand th...
13 comments posted 20yrs
posted by nospam.please
13 comments posted 20yrs posted by nospam.please

Setting Siemens PID controller FB41

Hello, I need to adjust a PID FB41 on S7-300 PLC. I have process G(s)=2/(4s+1) which is made in MATLAB and downloaded t...
0 comments posted 20yrs
posted by asim.vodencarevic
0 comments posted 20yrs posted by asim.vodencarevic

Protecting designs from being copied

The current project I am working on has brought up a problem that I have had in the past, particularly with this curren...
12 comments posted 20yrs
posted by Hopper1492
12 comments posted 20yrs posted by Hopper1492

help regarding numerical linearization

Hello I wish to solve a linear equation of the form Ax=b where b and x are known.I wish to evaluate the system matrix A...
0 comments posted 20yrs
posted by rvdora9
0 comments posted 20yrs posted by rvdora9

Tensioning System

I have a request to upgrade a couple of machines that I designed and built a few years ago that winds polyester tape on...
5 comments posted 20yrs
posted by Hopper1492
5 comments posted 20yrs posted by Hopper1492

Tool to Upload PLC code to GE Fanuc PLC 90/30

Hi, We use VersaPro to create PLC code and upload it to PLC CPU. Is there tool only doing upload? Because some of our se...
1 comments posted 20yrs
posted by mlhuang_2000
1 comments posted 20yrs posted by mlhuang_2000

How to integrate InTouch and AspenPlus?

I wonder if anyone has done this before?How did you do it? Any suggestion and advice is appreciated much!!!
0 comments posted 20yrs
posted by lenciel
0 comments posted 20yrs posted by lenciel

How can I communicate/reset a GE 90/30

Please bare with me, as I'm a newbie when it comes to industrial controllers. I'm connected via 10BaseT ethernet. All I...
4 comments posted 20yrs
posted by estrojen
4 comments posted 20yrs posted by estrojen