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Search: Posts Made By: James Mcquade
Forum: LIVE PLC Questions And Answers Yesterday, 11:27 PM
Replies: 1
Views: 36
Posted By James Mcquade
Short answer, No! in any machine, all moving...

Short answer, No!

in any machine, all moving parts must be guarded in such a manner to prevent any item from freely coming into contact with the moving parts.

I cannot cite book, chapter and...
Forum: LIVE PLC Questions And Answers Yesterday, 11:17 PM
Replies: 6
Views: 79
Posted By James Mcquade
depending oft the age of the slc 500 plc, if it...

depending oft the age of the slc 500 plc, if it has a dead battery, the internal capacitors can keep the program up to 30 days. I had one last 3 months.

james
Forum: LIVE PLC Questions And Answers Yesterday, 10:57 AM
Replies: 6
Views: 79
Posted By James Mcquade
Welcome to the forum. let me go through this...

Welcome to the forum.

let me go through this process.
you make changes to the program on the pc.
when the power is turned off to the machine and the power is restored, the program reverts back...
Forum: LIVE PLC Questions And Answers Yesterday, 10:47 AM
Replies: 11
Views: 186
Posted By James Mcquade
Windows NT has the password to automatically...

Windows NT has the password to automatically expire after x number of days unless you go into the system and tell it to not expire.
with a fresh install of nt, it's 42 days.
I would say that even...
Forum: LIVE PLC Questions And Answers October 15th, 2018, 01:25 PM
Replies: 8
Views: 261
Posted By James Mcquade
Any sensor used will need to be class 2 div 1,2 -...

Any sensor used will need to be class 2 div 1,2 - dust
since you added the damp part, it will need to be cleaned regularly and kept away from coal since the coal can damage the sensors.

if the...
Forum: LIVE PLC Questions And Answers October 15th, 2018, 10:47 AM
Replies: 5
Views: 323
Posted By James Mcquade
LOTO says that ALL stored energy must be released...

LOTO says that ALL stored energy must be released to work on equipment.
My 2 cents is this, and if I am wrong, please correct me.

Each system is different!
you must look at the entire system and...
Forum: LIVE PLC Questions And Answers October 14th, 2018, 11:19 PM
Replies: 3
Views: 204
Posted By James Mcquade
Cydog, I just bought one myself and this...

Cydog,

I just bought one myself and this device requires an internet connection with an assignable address.

in the advanced section, you might assign the system an ip address, but you still...
Forum: LIVE PLC Questions And Answers October 14th, 2018, 11:08 PM
Replies: 25
Views: 918
Posted By James Mcquade
Regardless of your project, ALWAYS remember who...

Regardless of your project, ALWAYS remember who the end user is, MAINTENANCE !!

i'll always say it
if maintenance cannot understand the program and how it works, it's a boat anchor.
the machine...
Forum: LIVE PLC Questions And Answers October 12th, 2018, 09:59 AM
Replies: 9
Views: 399
Posted By James Mcquade
Specify the brand names and model #'s for the plc...

Specify the brand names and model #'s for the plc with spare requirements, hmi brand, scada brand and tag size with spares.
Specify everything !, or you may be forced to accept what they give you...
Forum: LIVE PLC Questions And Answers October 11th, 2018, 09:36 PM
Replies: 9
Views: 399
Posted By James Mcquade
I would also ad what type of plc programming to...

I would also ad what type of plc programming to use an what to exclude.

we use ladder logic only.
we do not allow fuzzy logic, grafcet, structured text, function blocks, sequencers, fifo.
ladder...
Forum: LIVE PLC Questions And Answers October 11th, 2018, 09:12 PM
Replies: 2
Views: 266
Posted By James Mcquade
please explain your question, please give details...

please explain your question, please give details of what you want.

james
Forum: LIVE PLC Questions And Answers October 11th, 2018, 02:39 PM
Replies: 37
Views: 1,397
Posted By James Mcquade
I haven't read the entire posts here, but nfpa79...

I haven't read the entire posts here, but nfpa79 - industrial standard for industrial machinery dictates that no new control panels shall have control voltages above 120 volts ( that might have...
Forum: LIVE PLC Questions And Answers October 8th, 2018, 08:24 PM
Replies: 17
Views: 896
Posted By James Mcquade
the hardest thing I found was developing the...

the hardest thing I found was developing the symbols and size.
we ended up designing for a 34x22 (D) size page with 1" square symbols.
they will then print on an 11x17 at half scale and a 8 1/2 x...
Forum: LIVE PLC Questions And Answers October 8th, 2018, 08:46 AM
Replies: 17
Views: 896
Posted By James Mcquade
as already stated, it all depends on the engineer...

as already stated, it all depends on the engineer doing the job.
a beginner who has to create everything from scratch would take weeks.
someone doing this for years and already has a library built...
Forum: LIVE PLC Questions And Answers October 5th, 2018, 05:24 PM
Replies: 13
Views: 466
Posted By James Mcquade
the customer MUST tell you the hazardous...

the customer MUST tell you the hazardous chemicals used !
if he doesn't, the material you use in the area might react with those chemicals and cause a bigger issue! I designed an acid tank system...
Forum: LIVE PLC Questions And Answers October 5th, 2018, 02:23 PM
Replies: 13
Views: 466
Posted By James Mcquade
you have the hazardous area. you go through a...

you have the hazardous area.
you go through a wall or barrier.
within 18" of that wall on the safe side you have seal off fittings that are filled with cotton and epoxy (that's the seal).
you then...
Forum: LIVE PLC Questions And Answers October 5th, 2018, 12:04 PM
Replies: 7
Views: 386
Posted By James Mcquade
the Omron battery and internal capicators have...

the Omron battery and internal capicators have died.
what you can do is power on the unit for a day or 2 to see if the batteries will recharge.
remove power for 30 seconds and reapply power.
turn...
Forum: LIVE PLC Questions And Answers October 3rd, 2018, 10:44 AM
Replies: 9
Views: 399
Posted By James Mcquade
Since you are the oem, your customer is to...

Since you are the oem, your customer is to provide you with the specs.

questions I would ask.
what is the machine and what does it do
what is the poser requirements
what is the preferred plc...
Forum: LIVE PLC Questions And Answers September 30th, 2018, 09:36 PM
Replies: 23
Views: 634
Posted By James Mcquade
now would be the perfect time to stress to...

now would be the perfect time to stress to corporate that they need to keep their hands off of the programing and backups.

you should also have backups located somewhere.
we have working copies...
Forum: LIVE PLC Questions And Answers September 28th, 2018, 01:50 PM
Replies: 27
Views: 1,553
Posted By James Mcquade
I am hesitant to reply, but here goes. when...

I am hesitant to reply, but here goes.

when buying a new car, you look for the best deal, why not do the same when buying control panels, programming, machinery?

if everyone knew the prices,...
Forum: LIVE PLC Questions And Answers September 25th, 2018, 10:32 AM
Replies: 19
Views: 1,067
Posted By James Mcquade
I used to work for a company that shipped al over...

I used to work for a company that shipped al over the world, when they shipped to the states, they got a good surprise. they had to show risk assessments, wiring diagrams, specifications, and a lot...
Forum: LIVE PLC Questions And Answers September 25th, 2018, 08:41 AM
Replies: 19
Views: 1,067
Posted By James Mcquade
it doesn't matter where you buy the equipment or...

it doesn't matter where you buy the equipment or what country, if you sell it, YOU are responsible for it and all aspects of safety.

who ever you buy the equipment from, you need to provide them...
Forum: LIVE PLC Questions And Answers September 24th, 2018, 03:21 PM
Replies: 15
Views: 597
Posted By James Mcquade
1. why do you keep the management network from...

1. why do you keep the management network from the plant manufacturing network?
2. when do you have to turn off the firewall on pc's
3. why is license management critical?
4. why do you scan...
Forum: LIVE PLC Questions And Answers September 21st, 2018, 07:19 PM
Replies: 3
Views: 238
Posted By James Mcquade
I have used cognex in the past. did you do a...

I have used cognex in the past.
did you do a search for cogex?
goto www.cognex.com for their website.
I would call a local dealer for help.

james
Forum: LIVE PLC Questions And Answers September 20th, 2018, 05:36 PM
Replies: 9
Views: 304
Posted By James Mcquade
tkareus, you are NOT allowed to do what you...

tkareus,

you are NOT allowed to do what you are proposing !
the powers that be will have a field day when they find this out.

this violates a number of safety rules.
you cannot automatically...
Showing results 1 to 25 of 500

 
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