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Search: Posts Made By: ASF
Forum: LIVE PLC Questions And Answers Yesterday, 10:25 PM
Replies: 21
Views: 1,969
Posted By ASF
And people trying to control powerflex drives...

And people trying to control powerflex drives over Ethernet with an SLC5/05 :whistle:
Forum: LIVE PLC Questions And Answers Yesterday, 07:57 PM
Replies: 19
Views: 439
Posted By ASF
The job is in Queensland, which is marketed as...

The job is in Queensland, which is marketed as the Sunshine State. An average of 261 sunny days per year. Most houses in Queensland do in fact have swimming pools and while I definitely can't promise...
Forum: LIVE PLC Questions And Answers Yesterday, 07:49 PM
Replies: 7
Views: 222
Posted By ASF
You'll need the AOP to be able to add it to your...

You'll need the AOP to be able to add it to your ethernet tree in the first place. Basically, the AOP is what tells Logix (and the PLC) what sort of device it is, and how to talk to it. Once Logix...
Forum: LIVE PLC Questions And Answers Yesterday, 04:31 PM
Replies: 19
Views: 439
Posted By ASF
I'm going to throw a slightly different...

I'm going to throw a slightly different perspective out there...

You want to get into programming. Your current employer works in a closely related field, but does not provide a pathway for where...
Forum: LIVE PLC Questions And Answers November 6th, 2018, 04:46 PM
Replies: 14
Views: 327
Posted By ASF
I'm yet to be convinced that Ken is not a...

I'm yet to be convinced that Ken is not a Rockwell bot, created for the purpose of archiving the history of Allen-Bradley equipment. Has anyone run a turing test on him or actually seen him in the...
Forum: LIVE PLC Questions And Answers November 4th, 2018, 04:47 PM
Replies: 44
Views: 1,558
Posted By ASF
:beerchug:

:beerchug:
Forum: LIVE PLC Questions And Answers November 4th, 2018, 04:41 PM
Replies: 15
Views: 634
Posted By ASF
How you detect a fault depends on the nature of...

How you detect a fault depends on the nature of the fault. A stuck contact on an e/stop is detected by the safety relay seeing one channel open but not the other. A welded-in safety contactor is...
Forum: LIVE PLC Questions And Answers November 1st, 2018, 05:41 PM
Replies: 44
Views: 1,558
Posted By ASF
You're right, that's why I put my disclaimer that...

You're right, that's why I put my disclaimer that you wouldn't normally use a mechanical limit switch in that way. If you're using a mechanical limit switch in the way you describe - where it's...
Forum: LIVE PLC Questions And Answers November 1st, 2018, 05:20 PM
Replies: 15
Views: 634
Posted By ASF
Your best bet is to get hold of a copy of...

Your best bet is to get hold of a copy of ISO13849-1. That goes through the requirements of each safety category in detail. In (very) brief:


Cat B: designed using basic safety principles. A...
Forum: LIVE PLC Questions And Answers October 31st, 2018, 07:38 PM
Replies: 6
Views: 292
Posted By ASF
As the people above have mentioned, they are test...

As the people above have mentioned, they are test pulses. You cannot substitute 24VDC; that's exactly their purpose.

A test pulse is usually 24VDC, but it contains a pulse pattern. Each test pulse...
Forum: LIVE PLC Questions And Answers October 31st, 2018, 07:29 PM
Replies: 44
Views: 1,558
Posted By ASF
"Normally" has nothing to do with the normal...

"Normally" has nothing to do with the normal running state of the machine. The sensor has no concept of your machine. It doesn't know or care what your machine is doing. It doesn't know if it's on a...
Forum: LIVE PLC Questions And Answers October 30th, 2018, 07:09 PM
Replies: 44
Views: 1,558
Posted By ASF
This is one of my biggest pet hates*. When an...

This is one of my biggest pet hates*. When an electrical component is described as "Normally x", this should always describe the off, de-energised, unactuated, (usually) out-of-the-box state of the...
Forum: LIVE PLC Questions And Answers October 25th, 2018, 11:34 PM
Replies: 25
Views: 1,350
Posted By ASF
One quick word of warning on brendan's suggestion...

One quick word of warning on brendan's suggestion - the 1769-L16ER processor can only have 6 expansion cards, at 8 I/O points each (plus the 16DI/16DO onboard). That doesn't leave you a lot of...
Forum: LIVE PLC Questions And Answers October 21st, 2018, 05:23 PM
Replies: 9
Views: 304
Posted By ASF
I use a lot of Pilz stuff and have never had a...

I use a lot of Pilz stuff and have never had a problem (apart from their pricing strategy). Seen a little bit of Banner used here and there but never really had hands on experience with any safety...
Forum: LIVE PLC Questions And Answers October 18th, 2018, 05:38 PM
Replies: 19
Views: 672
Posted By ASF
Same! This is exciting. If I can have edge...

Same! This is exciting. If I can have edge replace all my FTView applications I'll be a very happy programmer!
Forum: LIVE PLC Questions And Answers October 15th, 2018, 05:57 PM
Replies: 7
Views: 236
Posted By ASF
Your best bet is to drop an FFL and FFU...

Your best bet is to drop an FFL and FFU instruction onto a rung, click on it and press F1. The help file is quite detailed and includes some really nice graphics to show exactly how the instructions...
Forum: LIVE PLC Questions And Answers October 15th, 2018, 05:51 PM
Replies: 19
Views: 913
Posted By ASF
There we go. A picture speaks 1000 words! ...

There we go. A picture speaks 1000 words!

AccelRate1 and AccelRate2 as you say are BOOL tags, which you turn on or off to select whether the drive uses AccelTime1 or AccelTime2. I now understand...
Forum: LIVE PLC Questions And Answers October 14th, 2018, 06:27 PM
Replies: 19
Views: 913
Posted By ASF
Presumably you're using multiple accel/decel...

Presumably you're using multiple accel/decel times because you need the drive to accelerate/decelerate at different rates at different times. One way of doing this is to set multiple accel/decel...
Forum: LIVE PLC Questions And Answers October 14th, 2018, 06:15 PM
Replies: 58
Views: 2,085
Posted By ASF
Sounds like a homework question...

Sounds like a homework question...
Forum: LIVE PLC Questions And Answers October 11th, 2018, 06:48 PM
Replies: 19
Views: 913
Posted By ASF
Another question would be why are you trying to...

Another question would be why are you trying to control three different decel rates via the PLC anyway? Could you not just use accel/decel 1, and have the PLC load a different accel/decel time into...
Forum: LIVE PLC Questions And Answers October 11th, 2018, 05:25 PM
Replies: 19
Views: 913
Posted By ASF
You don't need to change how you're doing things,...

You don't need to change how you're doing things, all you need to do is find that tag that's of the old data type and needs to be changed to the new data type. If you can post the program or at least...
Forum: LIVE PLC Questions And Answers October 8th, 2018, 06:06 PM
Replies: 11
Views: 557
Posted By ASF
Thanks for the info! So if I understand...

Thanks for the info!

So if I understand correctly, you were trying to maintain equal supply and return air flow, yes? If your total supply airflow is 10000 CFM, you want 10000 CFM on the return.
...
Forum: LIVE PLC Questions And Answers October 7th, 2018, 05:54 PM
Replies: 19
Views: 913
Posted By ASF
To expand on Jeff's post above... When...

To expand on Jeff's post above...


When you add a Powerflex drive to your ethernet tree, it creates a tag structure. That tag structure must, of course, have a data type, the same as any other...
Forum: LIVE PLC Questions And Answers October 4th, 2018, 06:25 PM
Replies: 19
Views: 719
Posted By ASF
Very interested in a better alarming setup. I use...

Very interested in a better alarming setup. I use AHMI to water my balcony garden (http://www.plctalk.net/qanda/showthread.php?t=102556&page=3) and the development of a better alarming system has...
Forum: LIVE PLC Questions And Answers October 2nd, 2018, 06:34 PM
Replies: 11
Views: 557
Posted By ASF
Thanks for the suggestions... 1. ...back off...

Thanks for the suggestions...

1. ...back off on the total flow set point when the return loop is at 100% with output-increasing-error.
I don't mind this idea because as you say, at least I'm not...
Showing results 1 to 25 of 500

 
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