Welcome to Control.com, the global online community of automation professionals.
Control.com - Nerds in Control
Member Login
Search
Jump to a Date
Sponsored Communities
Cool stuff
Twitter Feed
Neat Stuff
Visit our shop for nerds in control lifestyle products.
Thermal Overload
The threads that wouldn't die...
- PC reliability?
- Windows, real time
- PID loops
- PCs vs. PLCs
- Replacing people
- MS 'monopoly'?
- Software quality
- Where do we go from here?
- Why pay?
- PC reliability?
- Windows, real time
- PID loops
- PCs vs. PLCs
- Replacing people
- MS 'monopoly'?
- Software quality
- Where do we go from here?
- Why pay?
Fortune
Yield to Temptation ... it may not pass your way again.
-- Lazarus Long, "Time Enough for Love"
-- Lazarus Long, "Time Enough for Love"
RSS Feed
Use this link to get an RSS feed of the Control.com article flow, for private, non-commercial use only:www.control.com/rss/
To get a personalized feed, become a member at no cost.
urgent Encoder figure out problem
I need to control a FC51 Danfoss VFD with LS PLC.
I need to start , stop & jog the drives.
I need to start , stop & jog the drives.
New Replies:
Dear Mr.Bruce
Thank you for your help Finally we got it working
...
By Derik on 15 September, 2009 - 12:23 am -
Dear Mr.Bruce
I have already gone through the manual & can't just get it right
...
The answer to your questions will take a bit more space than available on this forum. I recommend...
By Derik on 14 September, 2009 - 1:32 pm -
I , an application engineer from LS Automation & Danfoss Engineer, tried to establish the...
Dear Mr. Bruce,
Thank you very much. I will try these setting once I am back in office tomorrow...
I recommend you write the entire 16 bit control word versus only the start bit. This would satisfy...
By Derik on 8 September, 2009 - 1:05 am -
Thank you I will try it & post the result
...
By Harvard on 7 September, 2009 - 5:34 pm -
Your poll should like like this:
02 05 00 06 FF 00 6C 08 ...
Looking for replacement units for obsolete 55M Controllers.
New Replies:
By Al on 17 September, 2009 - 7:06 pm -
A year to late but I would look into a Becker pneumatic controller....
Is VB can handle port number that have high number (like com 45 etc')?
Can I force the XP to automatic allocate port number less then specific value?
Can I force the XP to automatic allocate port number less then specific value?
New Replies:
By Yeasir Rahul on 17 September, 2009 - 2:14 am -
Answers to your questions:
1. VB6 comes with an ActiveX control named MSCOMM which will not...
By Robert Scott on 16 September, 2009 - 8:50 am -
I assume you are talking about the COM port number assigned to the virtual COM port established by...
Thoughts on motor types for high speed flywheel energy storage.
New Replies:
By Jitender Bedwal on 16 September, 2009 - 2:36 pm -
You can use a CVT or increase the gear ratio step by step. Btw, i am also designing, a CVT for the...
Need professional people to post their experiences in any problems they faced in ge frame 5 gas turbine start-up or operation.
New Replies:
Well we have a siginifcant investment in Mark VI on our Frame 7 Combined Cycle. We would like to...
This is true:...
> Could someone please tell me the differences between Mark VI and Mark VIe? <
The MKVI...
You don't have a problem because your turbine(s) have Mark VI, or even if they have Mark VIe....
Could someone please tell me the differences between Mark VI and Mark VIe?
How much improvement...
ABB CDP312r control panel
New Replies:
Yes, you can upload parameters to the panel and then download to a different drive. The drive will...
Newbie to Motor Control
Control single phase motor using inverter
M.Tech student in industrial drives and control doing project in brushless dc motor control
I know everyone has their personal preferences, but I think it would be more interesting to discover which software is the worst...
New Replies:
By Harry on 7 September, 2009 - 11:00 am -
I have over 8 years experience with PARAGON. I am specialized in Fermentation and Bioreactor...
CANOpen technologies
New Replies:
Beckhoff has wide range products for many popular field buses including of course CANopen one. ...
By Heinz-Jürgen Oertel on 3 September, 2009 - 9:54 am -
> I would assume that drivers normally come with the interface boards. <
Besides some...
By Heinz on 3 September, 2009 - 9:50 am -
Another source is :
http://www.can-wiki.info
at least for boards and drivers and higher layer...
By M Griffin on 31 August, 2009 - 10:33 pm -
The web site for the trade group is: "http://www.can-cia.org/". They have a product guide...
torque and speed changes in series and parallel connections of series motors
I require 20-25 Nm torque, high acceleration motor. The motor accelerates from 0 to 11.3 rad/s in 1.75 ms and then decelerates to 0 again in 1.75 ms. Do I choose AC servo or DC servo motor?
New Replies:
Pay attention on peak torque also - you define very high dynamic (more than 6,000 rad/s^2!) for the...
By Ken Emmons Jr. on 31 August, 2009 - 8:31 am -
Hello,
This is correct. Although a 70% duty cycle is pretty busy, it gets you a 30% margin which...
By M Griffin on 27 August, 2009 - 2:52 pm -
I wouldn't spend any time worrying about whether it is an AC servo or a modern brushless DC servo....
By Terry on 27 August, 2009 - 2:31 pm -
You might look at Hurst's new website-- http://www.hurst-motors.com -- There is a nice selection...
By William Sturm on 27 August, 2009 - 1:53 pm -
JK> As I understand both of you, I should use a (brushless) DC permanent magnet (3 poles)...
from the control and automation department...
possible ? matlab real time work shop + windows + gain scheduling 
gain scheduling have to be in RTAI ?
New Replies:
By M Griffin on 2 September, 2009 - 10:47 pm -
I haven't used it myself, but I believe that "Real-Time Workshop" is just a code...
PLC timeout problems when using multiple LANs in a RS485/Ethernet converter
New Replies:
you can also consider the Hexin brand RS-485 ethernet converter.
...
from the Electrical engineer department...
Medium Voltage Variable Frequency Drive to Control the Speed of MotorI am electrical engineer by profession and currently I am doing research on medium voltage Variable Frequency drive (also called as VFD, VSD, AC drive, VVVF, etc.)
New Replies:
By thiru on 1 September, 2009 - 8:04 am -
I want the manual for VFD can you send it to me.
thiru
electrical engineer, thiruvalluvar [at]...
GE Frame 5 limited below Rated Power
New Replies:
By MOB on 1 September, 2009 - 7:08 am -
To throw some light, I understand that the constants could have been possibly fiddled particularly...
Can an automotive alternator be supplied with a synthesised three phase signal to make it into a motor to start an engine with?
New Replies:
Thanks for the assurance about motoring an alternator. There is only 12v available and bringing in...
By M Griffin on 30 August, 2009 - 5:10 pm -
This sort of thing has been done on an experimental basis in automobiles, but not with standard...
By curt wuollet on 30 August, 2009 - 3:45 pm -
Yes a rotating field on the stator from 3-phase AC with DC on the rotor should produce a motor. I'm...
Fan Blower Motor control using soft starter
New Replies:
By chud on 31 August, 2009 - 4:09 am -
Was even thinking of putting in a mechanical brake on motor or shaft, or am i missing something?...
Lets get simple with this guys. Replace one of your bearings, does not matter which, with a sprag...
By Phil Corso on 29 August, 2009 - 11:56 am -
Responding to JulesCeasar's 29-Aug-09 (04:54) comments regarding fan "windmilling?"
...
Your use of this site is subject to the terms and conditions set forth under Legal Notices and the Privacy Policy. Please read those terms and conditions carefully. Subject to the rights expressly reserved to others under Legal Notices, the content of this site and the compilation thereof is © 1999-2009 Nerds in Control, LLC. All rights reserved.
Our Advertisers
Help keep our servers running...
Patronize our advertisers!
Patronize our advertisers!