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Search: Posts Made By: Robb B
Forum: LIVE PLC Questions And Answers April 6th, 2021, 05:50 PM
Replies: 3
Views: 197
Posted By Robb B
I don't think UL 508A has jurisdiction in Canada...

I don't think UL 508A has jurisdiction in Canada (topic for another thread?) but here we would have to put a sticker on it that says something like "Multiple sources of power" and if you are feeling...
Forum: LIVE PLC Questions And Answers March 18th, 2021, 07:43 PM
Replies: 3
Views: 534
Posted By Robb B
I think your North American equivalents are 208v ...

I think your North American equivalents are 208v 347v and 277v. The 480v is pretty normal, same with the 40 degrees Celsius rise.

Interesting that the efficiency is higher at the lower voltages....
Forum: LIVE PLC Questions And Answers March 16th, 2021, 05:53 PM
Replies: 10
Views: 719
Posted By Robb B
Get it done right, you are the one paying for...

Get it done right, you are the one paying for what was agreed upon (in writing?). Besides which, I don't know of any kind of IP 30 or better seal that can be installed after the fact. Maybe UL is...
Forum: LIVE PLC Questions And Answers March 16th, 2021, 02:27 PM
Replies: 25
Views: 1,229
Posted By Robb B
background info: Software doesnt see left...

background info:
Software doesnt see left machine move because a wire is not connected, which results in a 1746 output one-time blinking channel 2 open (for open circuit).

Has the wire been...
Forum: LIVE PLC Questions And Answers March 12th, 2021, 05:43 PM
Replies: 26
Views: 927
Posted By Robb B
Is the ethernet going to a switch? Any spare...

Is the ethernet going to a switch? Any spare ports there you can connect to? You could probably find the controller in rslinx that way.

Side topic question: Does anyone know if RSLinx browses by...
Forum: LIVE PLC Questions And Answers March 12th, 2021, 02:31 PM
Replies: 14
Views: 1,599
Posted By Robb B
The main problem I have is that the tank may be...

The main problem I have is that the tank may be emptied more than once in a cycle, and I need to capture the total volume added during the cycle. I can certainly add the volume captured at the moment...
Forum: LIVE PLC Questions And Answers March 12th, 2021, 02:24 PM
Replies: 14
Views: 1,599
Posted By Robb B
I will download and review those today, thanks!

I will download and review those today, thanks!
Forum: LIVE PLC Questions And Answers March 12th, 2021, 02:23 PM
Replies: 14
Views: 1,599
Posted By Robb B
Tank contains mostly water, but mixed with...

Tank contains mostly water, but mixed with creosote and bunker C, plus whatever else is in the wood.

Tank is a vertical cylinder. I do not have the dimensions exactly, other than nominal capacity...
Forum: LIVE PLC Questions And Answers March 11th, 2021, 05:14 PM
Replies: 14
Views: 1,599
Posted By Robb B
I haven't worked the problem since then, but now...

I haven't worked the problem since then, but now have to.

I have a level transmitter, reading level in inches, but I convert to gallons for Panelview HMI already. I am thinking to use this level...
Forum: LIVE PLC Questions And Answers March 11th, 2021, 01:51 PM
Replies: 12
Views: 662
Posted By Robb B
I think there's two windows, design and runtime....

I think there's two windows, design and runtime. There is also a "Verify" button to ensure communications work.

Even though you have "Copied from design to runtime" you should quadruple check the...
Forum: LIVE PLC Questions And Answers March 10th, 2021, 06:41 PM
Replies: 6
Views: 647
Posted By Robb B
Insulation tester for line to ground, should read...

Insulation tester for line to ground, should read 1 Million ohms plus an insulation factor, typically 500 000 ohms per 100V. So, a standard 120V household circuit should have 1.5 M ohms from line to...
Forum: LIVE PLC Questions And Answers March 8th, 2021, 05:30 PM
Replies: 3
Views: 593
Posted By Robb B
I've been reading into it and playing around. I...

I've been reading into it and playing around. I want to see if I understand it correctly. I'll be using a GoTo Display button to open a "Generic" Display popup. I get the list of possible Display...
Forum: LIVE PLC Questions And Answers March 8th, 2021, 04:13 PM
Replies: 29
Views: 2,066
Posted By Robb B
50Hz will be full nominal nameplate speed,...

50Hz will be full nominal nameplate speed, whether it comes from a VFD or a standard motor starter (across the line).

https://en.wikipedia.org/wiki/AC_motor#Induction_motor

Yes, the output...
Forum: LIVE PLC Questions And Answers March 8th, 2021, 03:14 PM
Replies: 5
Views: 529
Posted By Robb B
I don't see a filter option in the hardware...

I don't see a filter option in the hardware configurator, unless it requires to be online (just mocked up a controller and card in logix 500, no real hardware to test against). Probably will have to...
Forum: LIVE PLC Questions And Answers March 8th, 2021, 03:05 PM
Replies: 29
Views: 2,066
Posted By Robb B
The VFD knows nothing except what you program it....

The VFD knows nothing except what you program it. It is entirely possible to supply a VFD with 480V AC so it can run a 380V motor. You could also supply it with 240V single phase, and put out 600V 3...
Forum: LIVE PLC Questions And Answers March 8th, 2021, 02:22 PM
Replies: 29
Views: 2,066
Posted By Robb B
HZ dictates rpm, voltage will dictate amps. The...

HZ dictates rpm, voltage will dictate amps. The load will demand an amount of power, the vfd will provide this via voltage and hz manipulation up to the limits programmed for volts, amps, Hz.

The...
Forum: LIVE PLC Questions And Answers March 8th, 2021, 01:59 PM
Replies: 2
Views: 333
Posted By Robb B
This is for the communications links? Did you...

This is for the communications links? Did you successfully browse the processor from the shortcut? I know I've done it before where I hadn't clicked on the new shortcut, and it just overwrote an old...
Forum: Practice Posting Here March 4th, 2021, 05:55 PM
Replies: 1
Views: 1,856
Posted By Robb B
Success! and welcome!

Success! and welcome!
Forum: LIVE PLC Questions And Answers March 2nd, 2021, 04:20 PM
Replies: 14
Views: 918
Posted By Robb B
Programming by others seems pretty clear, the...

Programming by others seems pretty clear, the functional system will be made by someone else. Providing and installing working hardware that is free from faults or hardware errors could arguably be...
Forum: LIVE PLC Questions And Answers February 16th, 2021, 06:14 PM
Replies: 3
Views: 403
Posted By Robb B
Fault history is something that was created...

Fault history is something that was created specifically by the OEM? I don't see it as a default option in FTVS ME 11.0 here. I would hazard a guess that something in that programming doesn't play...
Forum: LIVE PLC Questions And Answers February 16th, 2021, 02:48 PM
Replies: 9
Views: 831
Posted By Robb B
I agree. Ability to work offline is very...

I agree. Ability to work offline is very important.
Forum: LIVE PLC Questions And Answers February 16th, 2021, 01:54 PM
Replies: 37
Views: 2,991
Posted By Robb B
If cabinet is possible to reach over 40 Celsius,...

If cabinet is possible to reach over 40 Celsius, advise putting active cooling in. Heat is electronics' enemy.
Forum: LIVE PLC Questions And Answers February 16th, 2021, 12:22 PM
Replies: 37
Views: 2,991
Posted By Robb B
Put the controller at the opposite end of the...

Put the controller at the opposite end of the cabinet from where the majority of cables/wires will come in. Put terminal blocks in between rack and entry points, use the biggest, deepest wireduct...
Forum: LIVE PLC Questions And Answers February 12th, 2021, 02:40 PM
Replies: 22
Views: 1,789
Posted By Robb B
I think what GaryS is getting at is that the fact...

I think what GaryS is getting at is that the fact that the call for water went unanswered. Whether a pump failed or whatever, it would be better to generate an alarm if a pump was called to run, but...
Forum: LIVE PLC Questions And Answers February 12th, 2021, 01:31 PM
Replies: 141
Views: 10,520
Posted By Robb B
Not my forte... Predictive would be a...

Not my forte...

Predictive would be a feed-forward, wouldn't it? I don't think any Integral term will achieve this. You would need something to signal the next change in temperature before it...
Showing results 1 to 25 of 152

 
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