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Search: Posts Made By: Stationmaster
Forum: LIVE PLC Questions And Answers August 6th, 2011, 07:31 PM
Replies: 31
Views: 6,229
Posted By Stationmaster
Now you've got me thinking "traction control" and...

Now you've got me thinking "traction control" and 4 X 4 ..... :thumb:
Forum: LIVE PLC Questions And Answers August 6th, 2011, 07:12 PM
Replies: 31
Views: 6,229
Posted By Stationmaster
I think i would explore the concept of a drive...

I think i would explore the concept of a drive per motor, and a differential calculation. The NEED for difference between the two speed references to the two drives would first be "sensed" by a...
Forum: LIVE PLC Questions And Answers July 2nd, 2011, 10:11 AM
Replies: 7
Views: 1,523
Posted By Stationmaster
Thanks for the input. Stationmaster

Thanks for the input.

Stationmaster
Forum: LIVE PLC Questions And Answers July 1st, 2011, 04:11 PM
Replies: 7
Views: 1,523
Posted By Stationmaster
Thanks iant, I've decided to go with the Banner,...

Thanks iant, I've decided to go with the Banner, we will just run 24v+ to all estops.

Lancie: yes, metaphorical alligators at work, actual bears at the country place. I guess videos of bears...
Forum: LIVE PLC Questions And Answers June 30th, 2011, 09:52 PM
Replies: 7
Views: 1,523
Posted By Stationmaster
Safety controller 120vac?

I need to manage about 20 estop stations and would like to use a safety controller to do so. After searching here, I saw several references to Banner's SC22-3e Safety Controller. I like this...
Forum: LIVE PLC Questions And Answers April 22nd, 2011, 04:01 PM
Replies: 10
Views: 2,112
Posted By Stationmaster
Well, there may be other ways now, but years ago...

Well, there may be other ways now, but years ago I went to school on a system that used the 503 with an optional "Basic" Module. The engineer had written his queries in basic, they would iterate...
Forum: LIVE PLC Questions And Answers March 23rd, 2011, 02:05 PM
Replies: 15
Views: 7,488
Posted By Stationmaster
Bruce, I hear you, But I'm a little...

Bruce,

I hear you, But I'm a little unclear. I have two (2) drives each with their own ckt brkr (now engineered at 125amp ea) being fed by one main fusible disconnect with 300 amp fuses. Are...
Forum: LIVE PLC Questions And Answers March 23rd, 2011, 12:01 PM
Replies: 15
Views: 7,488
Posted By Stationmaster
Thanks all. Bruce, the "main" disconnect...

Thanks all.

Bruce, the "main" disconnect upstream of this VFD controller has fuses (300amp, dual element) and should limit the overall available fault current.

Dick, Does it seem to be ABB's...
Forum: LIVE PLC Questions And Answers March 22nd, 2011, 07:42 PM
Replies: 15
Views: 7,488
Posted By Stationmaster
I'm thinking the same thing, John. I always have...

I'm thinking the same thing, John. I always have used breakers on another brand of drive I use. And places where other builders have used fuses either get nuisance fuse blows or like you said, the...
Forum: LIVE PLC Questions And Answers March 22nd, 2011, 06:36 PM
Replies: 15
Views: 7,488
Posted By Stationmaster
ABB VFD Breaker?

I have an application where I am using 2 75hp 480vac ABB VFDs, (ACH 550-UH-097A-4) and would like to use molded case circuit breakers. The manual recommends fuses.

I know fuses have advantages,...
Forum: LIVE PLC Questions And Answers February 27th, 2011, 02:40 AM
Replies: 27
Views: 7,677
Posted By Stationmaster
You'll just have to trust me when I say: I didn't...

You'll just have to trust me when I say: I didn't miss your point.
Forum: LIVE PLC Questions And Answers February 26th, 2011, 11:51 PM
Replies: 27
Views: 7,677
Posted By Stationmaster
Wow Ron, You make it sound as if my skill...

Wow Ron,

You make it sound as if my skill set is inadequate for "troubleshooting"". Not true. I find being able to think in boolean to be VERY useful in examining ladder, and the sensors and...
Forum: LIVE PLC Questions And Answers February 26th, 2011, 09:16 AM
Replies: 27
Views: 7,677
Posted By Stationmaster
I also do away with the "normally open and...

I also do away with the "normally open and normally closed" monikers at times. When I'm in the zone and churning out ladder, I use this mental shorthand syntax:

-| |- "IF you have"

and...
Forum: LIVE PLC Questions And Answers January 24th, 2011, 08:42 PM
Replies: 1
Views: 1,073
Posted By Stationmaster
While I deal a lot with IDEC PLC's, I don't do...

While I deal a lot with IDEC PLC's, I don't do much with hoppers.

Try here: http://www.cyberneticbe.com/forum/

They may be willing to fulfill your "requirements".

Stationmaster
Forum: LIVE PLC Questions And Answers January 17th, 2011, 09:03 PM
Replies: 30
Views: 9,989
Posted By Stationmaster
A few things come to mind.... Make sure...

A few things come to mind....

Make sure your job report includes all the boilerplate you'll need if you DO have to start collection actions against them, and that by signing it they agree to pay,...
Forum: LIVE PLC Questions And Answers November 22nd, 2010, 09:47 PM
Replies: 1
Views: 1,159
Posted By Stationmaster
Try here: ...

Try here:

http://www.cyberneticbe.com/forum/index.php

Join, post your question......

There are some pretty savvy IDEC guys that check in once in a while.

Stationmaster
Forum: LIVE PLC Questions And Answers November 20th, 2010, 03:59 PM
Replies: 36
Views: 12,270
Posted By Stationmaster
Okay, I think I get it. The difference is in the...

Okay, I think I get it. The difference is in the predictions necessary for engineering. The systems I work with (irrigation with centrifugal water pumps) don't, for the purposes of engineering,...
Forum: LIVE PLC Questions And Answers November 20th, 2010, 12:12 AM
Replies: 36
Views: 12,270
Posted By Stationmaster
No flow, no go.

Yes... the force causes movement for the first gazillionth of an inch, but without replacing that gazillionth of an inch worh of oil with adequate flow, the pressure drops dramatically and the...
Forum: LIVE PLC Questions And Answers November 19th, 2010, 07:10 PM
Replies: 36
Views: 12,270
Posted By Stationmaster
Wow.... that is WEIRD!!!! I have actually been...

Wow.... that is WEIRD!!!! I have actually been scouring EBAY for a used tractor (honest, no kidding) and I recognized THIS one as one of the ones listed... I honestly thought my laptop was acting up...
Forum: LIVE PLC Questions And Answers November 19th, 2010, 04:42 PM
Replies: 36
Views: 12,270
Posted By Stationmaster
Will your simulator let you reduce the FLOW while...

Will your simulator let you reduce the FLOW while all other variables remain equal?

What happens THEN?
Forum: LIVE PLC Questions And Answers November 17th, 2010, 10:24 PM
Replies: 36
Views: 12,270
Posted By Stationmaster
Still, to MAINTAIN velocity, you must maintain...

Still, to MAINTAIN velocity, you must maintain "force". And to maintain force you must maintain "pressure". So you have to select a pump that can continue move the replacement fluid (flow) into the...
Forum: LIVE PLC Questions And Answers November 17th, 2010, 08:56 PM
Replies: 36
Views: 12,270
Posted By Stationmaster
I know the last thing you guys need is another...

I know the last thing you guys need is another farm boy sticking his nose in and asking questions.... but I'm always looking to learn more about hydraulics.

I may misunderstand the dispute, but I...
Forum: LIVE PLC Questions And Answers October 21st, 2010, 06:19 PM
Replies: 33
Views: 6,340
Posted By Stationmaster
Doesn't much matter.... all the operators use the...

Doesn't much matter.... all the operators use the estop all the time anyway.....no matter HOW many stop buttons you give 'em.
Forum: LIVE PLC Questions And Answers September 27th, 2010, 06:23 PM
Replies: 17
Views: 3,033
Posted By Stationmaster
If you want to do a smooth control (analog with...

If you want to do a smooth control (analog with PID) on the OUTPUT to the valves, you'll HAVE to have analog INPUTS re: the levels of the two tanks.

Otherwise, you only know which tank is higher...
Forum: LIVE PLC Questions And Answers September 19th, 2010, 11:53 PM
Replies: 19
Views: 4,188
Posted By Stationmaster
There is a lot of good advice here... the trouble...

There is a lot of good advice here... the trouble is sorting it out into something you can use.

There are two main "modes" in multi-VFD pumping systems: Sequential, and Syncronous.

Sequential...
Showing results 1 to 25 of 500

 
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