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Showing results 1 to 25 of 467
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Search: Posts Made By: g.mccormick
Forum: LIVE PLC Questions And Answers Yesterday, 08:23 AM
Replies: 12
Views: 328
Posted By g.mccormick
PWM is time proportional. ?? ...

PWM is time proportional. ??


Regardless, if you are not using a dedicated device for switching (power controller SCR), then you will want to be sure to use SSR relays. For base period times,...
Forum: LIVE PLC Questions And Answers July 5th, 2018, 10:15 PM
Replies: 8
Views: 287
Posted By g.mccormick
Is the load on this motor higher than the others?

Is the load on this motor higher than the others?
Forum: LIVE PLC Questions And Answers June 12th, 2018, 08:34 PM
Replies: 6
Views: 335
Posted By g.mccormick
Automation direct has softstarters that have...

Automation direct has softstarters that have optional EthernetIP cards available.
...
Forum: LIVE PLC Questions And Answers June 8th, 2018, 04:32 PM
Replies: 18
Views: 1,017
Posted By g.mccormick
Placeholder for future changes??

Placeholder for future changes??
Forum: LIVE PLC Questions And Answers June 8th, 2018, 10:38 AM
Replies: 20
Views: 766
Posted By g.mccormick
That is true. Measuring the airflow (proof or...

That is true. Measuring the airflow (proof or actual flow measurement) is best.
Forum: LIVE PLC Questions And Answers June 8th, 2018, 09:47 AM
Replies: 20
Views: 766
Posted By g.mccormick
Flow switch to prove flow and/or a current...

Flow switch to prove flow and/or a current switch. I've used both, current switch is easier to field install especially if your controls are in the same panel as the motor contactor since you would...
Forum: LIVE PLC Questions And Answers June 4th, 2018, 12:09 PM
Replies: 10
Views: 452
Posted By g.mccormick
https://subversion.apache.org/

https://subversion.apache.org/
Forum: LIVE PLC Questions And Answers May 29th, 2018, 08:50 AM
Replies: 6
Views: 200
Posted By g.mccormick
When you go from manual to auto, can you set the...

When you go from manual to auto, can you set the integral to whatever the manual value was?
Forum: LIVE PLC Questions And Answers May 28th, 2018, 09:45 AM
Replies: 7
Views: 444
Posted By g.mccormick
Hint. In structured text, a one shot makes this...

Hint. In structured text, a one shot makes this really easy.

Rtrig.q
Not myoutput
Forum: LIVE PLC Questions And Answers May 24th, 2018, 08:17 PM
Replies: 8
Views: 454
Posted By g.mccormick
Do you want 4-20ma, modbus, tcp/ip, etc??

Do you want 4-20ma, modbus, tcp/ip, etc??
Forum: LIVE PLC Questions And Answers May 16th, 2018, 09:07 PM
Replies: 5
Views: 388
Posted By g.mccormick
That would be the way. Note that using a...

That would be the way. Note that using a dedicated dp transducer us typically way more accurate than two gauge transducers.
Forum: LIVE PLC Questions And Answers May 12th, 2018, 06:29 AM
Replies: 12
Views: 974
Posted By g.mccormick
Automation direct carries this type of cable, and...

Automation direct carries this type of cable, and you can get spools or cut to length. ...
Forum: LIVE PLC Questions And Answers April 19th, 2018, 03:04 PM
Replies: 13
Views: 853
Posted By g.mccormick
I have a system that has a P2K main rack and...

I have a system that has a P2K main rack and then using Opto22 Snapio as remote io, i'm using Ethernet/IP to commuicate to the Snapio and it is working excellently.
Forum: LIVE PLC Questions And Answers April 18th, 2018, 11:53 AM
Replies: 25
Views: 946
Posted By g.mccormick
This was a great buy: ...

This was a great buy:
...
Forum: LIVE PLC Questions And Answers April 13th, 2018, 07:59 PM
Replies: 6
Views: 534
Posted By g.mccormick
Another option depending on how long and how...

Another option depending on how long and how often you need 480 is to rent a genset.
Forum: LIVE PLC Questions And Answers April 13th, 2018, 01:35 PM
Replies: 6
Views: 534
Posted By g.mccormick
Much much more knowledgeable people than I will...

Much much more knowledgeable people than I will probably be around shortly, but I thought most all drive manufactures state NOT using corner grounded delta. You may be able to find in your drive...
Forum: LIVE PLC Questions And Answers April 11th, 2018, 10:32 AM
Replies: 3
Views: 273
Posted By g.mccormick
You could use a shunt and signal conditioner to...

You could use a shunt and signal conditioner to turn the MV into high level signal.

https://www.rammeter.com/ram-meter-a50a100-50-amp-100-dcmv-dc-current-shunt.php
...
Forum: LIVE PLC Questions And Answers April 4th, 2018, 09:32 AM
Replies: 21
Views: 1,170
Posted By g.mccormick
I would think the only issue would be if closing...

I would think the only issue would be if closing the breaker with an out of sync generator, that would cause very big issues and curernts. A diesel generator should be happy to motor along, the...
Forum: LIVE PLC Questions And Answers April 2nd, 2018, 02:43 PM
Replies: 16
Views: 1,005
Posted By g.mccormick
Interesting. I've always that that breaking the...

Interesting. I've always that that breaking the neutral via the overload was a bad practice, but nearly every motor starter I've seen has done that. I did not know why the practice...
Forum: LIVE PLC Questions And Answers March 31st, 2018, 08:48 PM
Replies: 6
Views: 471
Posted By g.mccormick
FF is great for well defined and repeatable...

FF is great for well defined and repeatable systems. In my world of engine testing, we will run engines on very transient cycles. We utilize feedforward very heavily for these cycles. The...
Forum: LIVE PLC Questions And Answers March 26th, 2018, 07:54 PM
Replies: 5
Views: 371
Posted By g.mccormick
Thank you for the help. If i go this route...

Thank you for the help. If i go this route (though now boss man is talking VFD like I wanted to originally) I will add a breaker or fused disconnect to my combination starter
Forum: LIVE PLC Questions And Answers March 26th, 2018, 02:26 PM
Replies: 5
Views: 371
Posted By g.mccormick
The switch gear breaker will act as the OCPD for...

The switch gear breaker will act as the OCPD for the wiring/motor circuit.
My starter will have an overload to protect the motor.
My panel will have disconnect -> contactor -> overload
Forum: LIVE PLC Questions And Answers March 26th, 2018, 01:48 PM
Replies: 5
Views: 371
Posted By g.mccormick
Motor fed from breakerpanel no need for seperate fusing/mccb?

I have (or will be getting) a 250A motor that I am building a starter for. The starter will be in 36x36NEMA enclosure with a disconnect. This will be fed directly from switchgear breaker with...
Forum: LIVE PLC Questions And Answers March 14th, 2018, 02:42 PM
Replies: 8
Views: 492
Posted By g.mccormick
Yep, rent a generator.

Yep, rent a generator.
Forum: LIVE PLC Questions And Answers March 14th, 2018, 11:42 AM
Replies: 8
Views: 492
Posted By g.mccormick
Is this a single phase or three phase motor?

Is this a single phase or three phase motor?
Showing results 1 to 25 of 467

 
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