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Search: Posts Made By: g.mccormick
Forum: LIVE PLC Questions And Answers May 24th, 2018, 08:17 PM
Replies: 8
Views: 190
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: 261
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: 13
Views: 690
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: 7
Views: 338
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: 761
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: 402
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: 402
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: 227
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: 1,016
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: 912
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: 433
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: 339
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: 339
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: 339
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: 436
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: 436
Posted By g.mccormick
Is this a single phase or three phase motor?

Is this a single phase or three phase motor?
Forum: LIVE PLC Questions And Answers March 9th, 2018, 06:42 AM
Replies: 0
Views: 177
Posted By g.mccormick
OT- Fluke 87V screen replacement

Does anyone have favorite place for Fluke 87V replacement parts? Mine sorta left my hand at a high velocity yesterday into my tool box, now the screen is broken.
Forum: LIVE PLC Questions And Answers February 22nd, 2018, 07:08 PM
Replies: 22
Views: 934
Posted By g.mccormick
What are you trying to do? As others have...

What are you trying to do?

As others have said, you cannot get much lower even in absolute complete vacuum (blame science).
Forum: LIVE PLC Questions And Answers February 22nd, 2018, 10:22 AM
Replies: 2
Views: 139
Posted By g.mccormick
If it is actually relay output, it's probably due...

If it is actually relay output, it's probably due to voltage spike from connected coil. Put in a flyback diode across the solenoid to extinguish voltage spikes.
Forum: LIVE PLC Questions And Answers February 14th, 2018, 01:47 PM
Replies: 9
Views: 445
Posted By g.mccormick
The easiest is to have a second meter that you...

The easiest is to have a second meter that you can send it to have calibrated. That way the inuse meter is always calibrated with a cal certificate from where ever you got it calibrated at. You may...
Forum: LIVE PLC Questions And Answers February 12th, 2018, 09:54 AM
Replies: 41
Views: 8,250
Posted By g.mccormick
Opto22 has linecalled Snapio. THe IO is rack...

Opto22 has linecalled Snapio. THe IO is rack mounted, but the EB1 and EB2 io processors support EthernetIP (as well as MOdbus, etc). I have successfully used a rack with EnetIP before.
...
Forum: LIVE PLC Questions And Answers February 11th, 2018, 04:47 PM
Replies: 41
Views: 8,250
Posted By g.mccormick
What us the signal level? Beckhoff has very few...

What us the signal level? Beckhoff has very few AC level discrete io support.
Forum: LIVE PLC Questions And Answers February 9th, 2018, 03:02 PM
Replies: 12
Views: 642
Posted By g.mccormick
The reset for the estop relay would go through...

The reset for the estop relay would go through the two NC contacts on the contactors in series. So that both of the contactors have to be off before the estop can be reset.
Forum: LIVE PLC Questions And Answers February 9th, 2018, 02:16 PM
Replies: 12
Views: 642
Posted By g.mccormick
Put two contactors in series.

Put two contactors in series.
Forum: LIVE PLC Questions And Answers February 6th, 2018, 10:42 PM
Replies: 26
Views: 1,163
Posted By g.mccormick
I always try to make it so that the FWD drive...

I always try to make it so that the FWD drive rotation is "normal" direction. I don't want someone to see "REV" on the drive and assume things are running in reverse.
Showing results 1 to 25 of 458

 
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