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Search: Posts Made By: James Mcquade
Forum: LIVE PLC Questions And Answers Yesterday, 09:27 AM
Replies: 8
Views: 251
Posted By James Mcquade
I may be wrong on this, but. your location...

I may be wrong on this, but.

your location is Tennessee, so boilers are inspected and licensed by the state.
these boilers already are licensed by the state and as such their controls are also...
Forum: LIVE PLC Questions And Answers June 14th, 2019, 03:31 PM
Replies: 17
Views: 739
Posted By James Mcquade
if I understand you correctly, digital I/o only. ...

if I understand you correctly, digital I/o only.

so let's see what you want.
1. turn on and off an output to a light using an output.
2. you want to turn this output on / off using pulse width...
Forum: LIVE PLC Questions And Answers June 14th, 2019, 10:37 AM
Replies: 25
Views: 1,197
Posted By James Mcquade
Destroyed - no Stolen by fellow worker - yes. ...

Destroyed - no
Stolen by fellow worker - yes. company laptop. all files backed up on network dailey when I finished the work. Sad, no one would tell the boss who did it. I found out several...
Forum: LIVE PLC Questions And Answers June 13th, 2019, 02:30 PM
Replies: 7
Views: 191
Posted By James Mcquade
have you considered a vortex cooler and using a 2...

have you considered a vortex cooler and using a 2 or 5 micron filter to remove the oil contaminents? you would also need to add purge vents. depending on the size, this may not work.

if you need...
Forum: LIVE PLC Questions And Answers June 13th, 2019, 02:25 PM
Replies: 17
Views: 1,012
Posted By James Mcquade
1. Have you discussed this with your new...

1. Have you discussed this with your new employer?
2. will you be using any of the new employers laptops, software?
if yes, you really need to rethink side work. lots of issues here.
3. will...
Forum: LIVE PLC Questions And Answers June 12th, 2019, 10:51 AM
Replies: 7
Views: 398
Posted By James Mcquade
+1 for Ken's answer

+1 for Ken's answer
Forum: LIVE PLC Questions And Answers June 12th, 2019, 08:29 AM
Replies: 3
Views: 244
Posted By James Mcquade
before you start looking, you need to look at the...

before you start looking, you need to look at the power requirements of the rfid reader and its specifications. intrinsic barriers have power limitations.

the second thing to look at is the...
Forum: LIVE PLC Questions And Answers June 11th, 2019, 03:43 PM
Replies: 61
Views: 2,225
Posted By James Mcquade
I like normally open and normally closed. the...

I like normally open and normally closed.
the terms examine if open or examine if closed was confusing.

I also did relay logic before my introduction to plc's

james
Forum: LIVE PLC Questions And Answers June 10th, 2019, 09:24 AM
Replies: 2
Views: 307
Posted By James Mcquade
I would use extreme caution. you need to have...

I would use extreme caution. you need to have firewalls in place to prevent outside hackers from gaining access to your plant network.
you also need to run this by your IT department to see if it...
Forum: LIVE PLC Questions And Answers June 10th, 2019, 09:17 AM
Replies: 31
Views: 1,862
Posted By James Mcquade
when dealing with operators, you have to be kind...

when dealing with operators, you have to be kind of sneaky.

1. ask them was the machine in auto when it quit
2. if in auto, did you switch to manual.
3. what is the auto cycle supposed to do,...
Forum: LIVE PLC Questions And Answers May 31st, 2019, 12:17 PM
Replies: 16
Views: 805
Posted By James Mcquade
i'm not sure if I am stating this correctly. ...

i'm not sure if I am stating this correctly.

if you have a 1 user license installed, then only 1 user can run the program at a time.

on our server, we have factory talk ??? with concurrent...
Forum: LIVE PLC Questions And Answers May 30th, 2019, 05:03 PM
Replies: 16
Views: 991
Posted By James Mcquade
Before we go there, what voltage is the motors? ...

Before we go there, what voltage is the motors?
if 240v , no line / load reactors required.

if 440,460,480, then you need to install line and load reactor for motor leads longer then 25 ft -...
Forum: LIVE PLC Questions And Answers May 30th, 2019, 11:28 AM
Replies: 19
Views: 1,464
Posted By James Mcquade
We use nightstick NSP-4604B uses 3 AAA...

We use nightstick NSP-4604B

uses 3 AAA batteries, works great, has 3 modes of lighting.

james
Forum: LIVE PLC Questions And Answers May 29th, 2019, 03:14 PM
Replies: 11
Views: 577
Posted By James Mcquade
reason for plc you buy the programming...

reason for plc

you buy the programming software and you own it.
you can modify the program if necessary.

you can buy the scada system (advanced is free)
you get to make the program and keep...
Forum: LIVE PLC Questions And Answers May 24th, 2019, 11:46 AM
Replies: 26
Views: 1,121
Posted By James Mcquade
what ever plc you choose, the most important...

what ever plc you choose, the most important issues to me are.

1. is there local distributors for spare parts if the plc, power supply, I/o goes bad.
2. where is the nearest distributor and how...
Forum: LIVE PLC Questions And Answers May 23rd, 2019, 05:22 PM
Replies: 16
Views: 1,232
Posted By James Mcquade
atomic10, you need to look at the wiring...

atomic10,

you need to look at the wiring diagram and post a picture for us and give us a manufacturer and model number of the unit.
from your description, your drive has its own power source...
Forum: LIVE PLC Questions And Answers May 22nd, 2019, 09:26 AM
Replies: 7
Views: 499
Posted By James Mcquade
are they on the same circuit or different...

are they on the same circuit or different circuits?
are they in the same control panel, mcc buckets?
motor voltage and size? are they the same horsepower?
assuming standard motors, not vfd driven...
Forum: LIVE PLC Questions And Answers May 22nd, 2019, 08:43 AM
Replies: 11
Views: 512
Posted By James Mcquade
True, arc flash is becoming more of an issue...

True, arc flash is becoming more of an issue everywhere.
we had an engineering firm do a study on all our enclosures and classify the ppe requirements.

the issue is the older control panels built...
Forum: LIVE PLC Questions And Answers May 21st, 2019, 04:10 PM
Replies: 6
Views: 543
Posted By James Mcquade
forgot to add, conveyor belts slip as they...

forgot to add,

conveyor belts slip as they ware in.
there is mechanical slippage to consider also.

james
Forum: LIVE PLC Questions And Answers May 21st, 2019, 04:08 PM
Replies: 18
Views: 1,200
Posted By James Mcquade
check out the warranty of the unit first. if...

check out the warranty of the unit first.
if you buy it, have the warranty put in the po information.

we have bought from them before with no issue and had that in our po.

james
Forum: LIVE PLC Questions And Answers May 21st, 2019, 02:18 PM
Replies: 6
Views: 543
Posted By James Mcquade
velocity = distance divided by time interval ...

velocity = distance divided by time interval

you have a speed reference, not the speed !
just because you tell the drive to go 60 rpm at the gear box output, doesn't mean that is what you get....
Forum: LIVE PLC Questions And Answers May 17th, 2019, 02:42 PM
Replies: 6
Views: 473
Posted By James Mcquade
you have asked a vague question. pneumatics...

you have asked a vague question.

pneumatics valves?
Hydraulic valve?
chemical valve, what type of chemicals?
standard valves or hazardous environment classification?
control voltage?


we...
Forum: LIVE PLC Questions And Answers May 17th, 2019, 08:31 AM
Replies: 13
Views: 646
Posted By James Mcquade
be careful with the number of parallel branches. ...

be careful with the number of parallel branches.
every time I go more than 8, I start having issues with the logic.
you have to read the first published manual. it limits the number of branches to...
Forum: LIVE PLC Questions And Answers May 16th, 2019, 09:15 AM
Replies: 4
Views: 394
Posted By James Mcquade
I have seen punch presses and safety plc's locked...

I have seen punch presses and safety plc's locked down due to liability.

as you said, get with legal and see what is written in the contract.
contact them and see what can be done.

we have...
Forum: LIVE PLC Questions And Answers May 15th, 2019, 03:34 PM
Replies: 5
Views: 422
Posted By James Mcquade
Just a guess on my part, what if you power down...

Just a guess on my part, what if you power down the entire drive, wait 30 seconds, then power back up?

james
Showing results 1 to 25 of 500

 
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