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Search: Posts Made By: James Mcquade
Forum: LIVE PLC Questions And Answers Today, 06:30 PM
Replies: 6
Views: 85
Posted By James Mcquade
if this is an existing control panel, you might...

if this is an existing control panel, you might be ok.
NFPA79 - electrical standard for industrial machinery states control panels may not have control voltages above 120 volts. now I know I say...
Forum: LIVE PLC Questions And Answers Today, 02:11 PM
Replies: 11
Views: 402
Posted By James Mcquade
please be aware of one VERY important detail. ...

please be aware of one VERY important detail.

when they take the demo parts to their facility, they will set the unit up in their test lab with ideal lighting. they will clean the parts and make...
Forum: LIVE PLC Questions And Answers Yesterday, 05:33 PM
Replies: 17
Views: 546
Posted By James Mcquade
While you can put the timer in the middle of the...

While you can put the timer in the middle of the rung as stated,
please consider what maintenance is use to and what their capabilities are.

most maintenance guys can read and understand wire...
Forum: LIVE PLC Questions And Answers Yesterday, 04:36 PM
Replies: 11
Views: 402
Posted By James Mcquade
+1 Cognex BUT ! everything depends on the...

+1 Cognex

BUT !
everything depends on the following.
camera resolution.
how far you are from the part.
color of insert
color if plastic.
LIGHTING !!
how much variation you can have and...
Forum: LIVE PLC Questions And Answers Yesterday, 01:10 PM
Replies: 7
Views: 294
Posted By James Mcquade
Welcome to the forum. what you are asking...

Welcome to the forum.

what you are asking for depends on several factors.

how big is the zone?
how is the zone constructed?
how is it insulated?
how is the zone cooled?
what is the material...
Forum: LIVE PLC Questions And Answers February 16th, 2019, 11:04 AM
Replies: 6
Views: 569
Posted By James Mcquade
Can you put the controls in nema 7,9 enclosure...

Can you put the controls in nema 7,9 enclosure and do the work?
these are the massive bulky enclosures 1/2" thick.


another solution is a nema 4/4x enclosure that is purged or pressurized.
you...
Forum: LIVE PLC Questions And Answers February 15th, 2019, 03:52 PM
Replies: 6
Views: 569
Posted By James Mcquade
what is the hazardous material and rating? you...

what is the hazardous material and rating?
you will need to establish this first.

Parker makes a control board also, you might check into them.

where is the servo and lvdt located?

if the...
Forum: LIVE PLC Questions And Answers February 15th, 2019, 03:46 PM
Replies: 11
Views: 444
Posted By James Mcquade
I always ground the x2 (0volt) terminal of the...

I always ground the x2 (0volt) terminal of the transformer to prevent a floating neutral.

I did a job in West Tn in which one of the transformer windings was not grounded correctly. We had 75...
Forum: LIVE PLC Questions And Answers February 14th, 2019, 05:19 PM
Replies: 22
Views: 795
Posted By James Mcquade
I am assuming an Allen Bradley plc. if...

I am assuming an Allen Bradley plc.
if possible, I would let the subroutine scan every scan. let the logic solve itself and operate the outputs based on the program logic. you will have a better...
Forum: LIVE PLC Questions And Answers February 13th, 2019, 05:12 PM
Replies: 10
Views: 486
Posted By James Mcquade
I would use managed switches everywhere, less...

I would use managed switches everywhere, less traffic in my opinion.

james
Forum: LIVE PLC Questions And Answers February 13th, 2019, 05:09 PM
Replies: 30
Views: 1,006
Posted By James Mcquade
For any given homework assignment or task at...

For any given homework assignment or task at work, you must consider these instructions as the customers specifications.
1. read the specifications several times.
2. write down your understanding...
Forum: LIVE PLC Questions And Answers February 12th, 2019, 07:43 PM
Replies: 3
Views: 202
Posted By James Mcquade
I would contact your local dealer to see if they...

I would contact your local dealer to see if they can help.

if memory serves me correctly, Telemecanique bought the Square D plc division. I can very well be wrong and if I am, someone please...
Forum: LIVE PLC Questions And Answers February 12th, 2019, 12:53 PM
Replies: 7
Views: 285
Posted By James Mcquade
Hewlett Packard EMS power supplies. I...

Hewlett Packard
EMS power supplies.

I designed an interface board for the hp systems we used. worked great.
they came by and inspected the design and were looking at incorporating it into their...
Forum: LIVE PLC Questions And Answers February 9th, 2019, 12:52 AM
Replies: 8
Views: 465
Posted By James Mcquade
I can understand why you would want to keep...

I can understand why you would want to keep maintenance from making program changes, but WHY would you want to keep another programmer from making changes?

my coworker trust each other and we make...
Forum: LIVE PLC Questions And Answers February 8th, 2019, 05:35 PM
Replies: 15
Views: 733
Posted By James Mcquade
this maybe a stupid question, but how will the...

this maybe a stupid question, but how will the customer be able to tell
one tank level from another?

james
Forum: LIVE PLC Questions And Answers February 7th, 2019, 10:38 AM
Replies: 23
Views: 618
Posted By James Mcquade
Everyone, this post is off topic but brings...

Everyone,

this post is off topic but brings up a good safety point.

While it is accepted and its in the code book that green is supposed to be ground, DON'T accept this as being correct !!
...
Forum: LIVE PLC Questions And Answers February 6th, 2019, 10:04 AM
Replies: 25
Views: 1,100
Posted By James Mcquade
fyi, while we are more than happy to help...

fyi,

while we are more than happy to help anyone with their homework, all we ask is that the individual put forth some effort first and show what they have done.

it makes you think about the...
Forum: LIVE PLC Questions And Answers February 4th, 2019, 04:08 PM
Replies: 3
Views: 308
Posted By James Mcquade
Welcome to the forum. please tell us the...

Welcome to the forum.

please tell us the following information.
which plc? 5/01, 5/02, 5/03, 5/04, 5/05?
what barcode scanner?
in regards to the barcode: numeric or alphanumeric?
any prefix,...
Forum: LIVE PLC Questions And Answers February 4th, 2019, 03:54 PM
Replies: 6
Views: 588
Posted By James Mcquade
there is an interface module that can be used to...

there is an interface module that can be used to interface between the plc and the atlas copco unit.
we stored over 1500 data points per station, 5 stations per shift.
sorry, it's been to many...
Forum: LIVE PLC Questions And Answers February 4th, 2019, 12:04 AM
Replies: 3
Views: 289
Posted By James Mcquade
please contact your local dealer and be prepared...

please contact your local dealer and be prepared to answer a lot of questions and prove you have the rights to the machine.

what is the application?

james
Forum: LIVE PLC Questions And Answers January 30th, 2019, 09:59 PM
Replies: 12
Views: 764
Posted By James Mcquade
kvogel, I just used the name as a reference....

kvogel,

I just used the name as a reference.
i'm not sure what he used, but I do know communications between our plc's, scada, sql db was at a snails pace.
when he killed the program, we were...
Forum: LIVE PLC Questions And Answers January 30th, 2019, 09:54 PM
Replies: 10
Views: 523
Posted By James Mcquade
if its moving and you can touch any part of the...

if its moving and you can touch any part of the machine or part being processed, it must be guarded.
if the opening is bigger than 15mm (best as I can remember) the opening must be guarded.
if it's...
Forum: LIVE PLC Questions And Answers January 30th, 2019, 03:36 PM
Replies: 12
Views: 764
Posted By James Mcquade
I would be cautious of programs like wireshark...

I would be cautious of programs like wireshark for example (it was mentioned, I never used it before).

if the network is rather large, you can cause communication issues in the plant.
a coworker...
Forum: LIVE PLC Questions And Answers January 30th, 2019, 12:45 PM
Replies: 2
Views: 170
Posted By James Mcquade
welcome to the forum. several question for...

welcome to the forum.

several question for you.

what os did you upgrade from?
was this a fresh install?
what brand of vm? we use VMware on a fresh install of windows 10 pro and then upgraded...
Forum: LIVE PLC Questions And Answers January 30th, 2019, 10:40 AM
Replies: 8
Views: 263
Posted By James Mcquade
as stated, if the program is done correctly,...

as stated, if the program is done correctly, nothing.
then you modify the program, and the system goes sideways.

multiple outputs of the same address is bad practice.

i spent 2 days at a...
Showing results 1 to 25 of 500

 
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