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Search: Posts Made By: rpoet
Forum: LIVE PLC Questions And Answers Today, 12:13 AM
Replies: 4
Views: 79
Posted By rpoet
I bought that one. It's now collecting dust in...

I bought that one. It's now collecting dust in the back of my tool box; it took an age to remove the powdercoat on a subpanel, and somewhat trashed the brush in the process. I guess it's only...
Forum: LIVE PLC Questions And Answers May 23rd, 2020, 11:52 AM
Replies: 13
Views: 921
Posted By rpoet
It's exactly what Liam thought it was; the thing...

It's exactly what Liam thought it was; the thing that looks like the encoder body but isn't is designed to slot into the motor end bell sheetmetal.

What a goofy design; it still has a "normal"...
Forum: LIVE PLC Questions And Answers May 16th, 2020, 09:43 PM
Replies: 13
Views: 921
Posted By rpoet
Thanks, Liam. I'm pretty sure that's what it is....

Thanks, Liam. I'm pretty sure that's what it is. We had to order something other than our "normal encoder" option due to lead times from SEW. I'm stopping by the shop tomorrow afternoon (when no...
Forum: LIVE PLC Questions And Answers May 15th, 2020, 03:54 PM
Replies: 13
Views: 921
Posted By rpoet
strange encoder on SEW motor

In 20+ years working with motors, I've never come across what showed up at the shop today. (photo attached) We ordered a set of small (1/3Hp) induction motors from SEW Eurodrive for a project, and...
Forum: LIVE PLC Questions And Answers May 7th, 2020, 01:19 AM
Replies: 18
Views: 854
Posted By rpoet
I understand and agree with the need for remote...

I understand and agree with the need for remote IO. It certainly has advantages, especially with large machines. One Ethernet cable is much easier to run than dozens of (or more) individual...
Forum: LIVE PLC Questions And Answers May 7th, 2020, 12:21 AM
Replies: 18
Views: 854
Posted By rpoet
Why use remote I/O?

Let me preface this by saying, I completely understand the RIO "bricks" that many vendors are making that use M12 connectors and are washdown rated / dust-tight, etc... Those have an easily defined...
Forum: LIVE PLC Questions And Answers April 30th, 2020, 01:12 PM
Replies: 24
Views: 1,444
Posted By rpoet
Your instructor is an a$$. PM me; I'm happy to...

Your instructor is an a$$. PM me; I'm happy to send you a few drawings that show some simple industrial networks, with COMs protocols listed.




-rpoet
Forum: LIVE PLC Questions And Answers April 26th, 2020, 08:26 PM
Replies: 24
Views: 1,444
Posted By rpoet
Photo of a PLC with an Ethernet port. Tech specs...

Photo of a PLC with an Ethernet port. Tech specs showing what protocols the PLC is capable of using. Link to Wikipedia page on Ethernet.

In all seriousness, your professor sounds like the Ivory...
Forum: LIVE PLC Questions And Answers April 18th, 2020, 01:52 AM
Replies: 6
Views: 453
Posted By rpoet
I am looking for a reset push-rod operator. It's...

I am looking for a reset push-rod operator. It's space limited, and even .765" is probably too large. I may have to make something; perhaps I'll look into using a stainless steel 16mm pushbutton...
Forum: LIVE PLC Questions And Answers April 17th, 2020, 12:58 PM
Replies: 6
Views: 453
Posted By rpoet
remote pushbutton for 16mm hole

I'm on the hunt for something like this:

https://www.asi-ez.com/member/~PPRN4R.asp?

But for a 16mm panel KO. Anyone know of a manufacturer? 22mm is too large for this particular application....
Forum: LIVE PLC Questions And Answers April 1st, 2020, 11:11 PM
Replies: 12
Views: 833
Posted By rpoet
I've used it on several projects in the last few...

I've used it on several projects in the last few years. In both cases, I had panel footprints that I just wasn't allowed to exceed (width and height). I could, however make the cabinets deeper, and...
Forum: LIVE PLC Questions And Answers March 5th, 2020, 02:35 PM
Replies: 32
Views: 1,409
Posted By rpoet
I've had few issues with the screens, and the...

I've had few issues with the screens, and the programming software is pretty dead simple.

Things of note:

You can't change the data type of a tag (unsigned 16bit INT to signed 16bit INT for...
Forum: LIVE PLC Questions And Answers January 18th, 2020, 06:27 PM
Replies: 11
Views: 1,211
Posted By rpoet
Does your drive have a brake resistor installed? ...

Does your drive have a brake resistor installed? If yes, is it the right value (resistance) and large enough (wattage) for the duty cycle you're operating at?

I'm not directly familiar with the...
Forum: LIVE PLC Questions And Answers November 19th, 2019, 10:04 PM
Replies: 22
Views: 1,907
Posted By rpoet
I run dual-circuit E-stop loops from the buttons...

I run dual-circuit E-stop loops from the buttons back to the safety relay. Each E-stop button has a self monitoring contact block, as well as an additional NC block (beyond the two needed for the...
Forum: LIVE PLC Questions And Answers November 13th, 2019, 03:15 PM
Replies: 1
Views: 517
Posted By rpoet
conductors passing over DIN rail

Other than company spec and/or best practice, is there any code or standard (UL508A, etc...) violation if circuit conductors pass over DIN rail?

Example: Relay is mounted on DIN rail, and its...
Forum: LIVE PLC Questions And Answers October 30th, 2019, 03:50 PM
Replies: 34
Views: 4,569
Posted By rpoet
I have to go through terminals on a current...

I have to go through terminals on a current project. The TINY Mitsubishi D720 VFD only accepts conductors 16ga or smaller - it's a 1/2Hp drive, so not surprising. It really is "Baby's First ...
Forum: LIVE PLC Questions And Answers October 21st, 2019, 07:09 AM
Replies: 11
Views: 1,106
Posted By rpoet
+1 for the Clearpath motors. I have (20) of them...

+1 for the Clearpath motors. I have (20) of them on a job, and they're working great.




-rpoet
Forum: LIVE PLC Questions And Answers October 12th, 2019, 12:02 PM
Replies: 18
Views: 1,547
Posted By rpoet
You won't have to account for space for cordless...

You won't have to account for space for cordless tools' batteries. You will have to carry those on, since Li-Ion batteries are not allowed in checked luggage. A coworker forgot, and TSA confiscated...
Forum: LIVE PLC Questions And Answers September 26th, 2019, 01:56 PM
Replies: 18
Views: 1,289
Posted By rpoet
The motors are internally protected; they're...

The motors are internally protected; they're labeled as such. These are decorative window shade motors, and the client wants to ensure that if a shade snags on something on the way up (houseplant,...
Forum: LIVE PLC Questions And Answers September 25th, 2019, 11:46 AM
Replies: 18
Views: 1,289
Posted By rpoet
Welcome to my life. :) -rpoet

Welcome to my life. :)


-rpoet
Forum: LIVE PLC Questions And Answers September 25th, 2019, 11:29 AM
Replies: 18
Views: 1,289
Posted By rpoet
There's no way the project can support the cost...

There's no way the project can support the cost of (16) analog inputs for CT's. The sensor I linked to is a CT with an integrated solid state N/C contact, that opens at a setpoint.

PLC will...
Forum: LIVE PLC Questions And Answers September 25th, 2019, 10:00 AM
Replies: 18
Views: 1,289
Posted By rpoet
They need to be auto-resetting. The operators...

They need to be auto-resetting. The operators involved won't have the technical chops to manually reset anything. Since they're going to be PLC-controlled, I'll plan on using these:
...
Forum: LIVE PLC Questions And Answers September 24th, 2019, 07:24 PM
Replies: 18
Views: 1,289
Posted By rpoet
single phase overload relay

I find myself needing to protect a large batch (16+) of small single phase 120V motors from overload; I've been told by the client their FLA is 4.9A. Is there a more elegant way of doing it than...
Forum: LIVE PLC Questions And Answers August 15th, 2019, 03:09 PM
Replies: 31
Views: 7,514
Posted By rpoet
Rockwell: you can buy better, but you'll never...

Rockwell: you can buy better, but you'll never pay more.




-rpoet
Forum: LIVE PLC Questions And Answers July 25th, 2019, 10:38 PM
Replies: 43
Views: 3,450
Posted By rpoet
Learn from your machine operators. They will...

Learn from your machine operators. They will discover all sorts of new and interesting ways to trip up your carefully crafted program by trying to do things out of sequence, power cycling the...
Showing results 1 to 25 of 500

 
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