[PSUBS-MAILIST] PLC input question

[Cliff Redus via Personal_Submersibles]

Alan

Let me know when you get ready to spec the PLC/HMI, I have been really
happy with the equipment I have using and can share.

Been working on two Psub projects.  The first is working with a local high
school on a modified K350 build.  I spent the last two month detailing the
boat with Autodesk Inventor and now have a pretty complete package of
drawings and specs for a modern K-350. The original K-350 plans are fairly
basic and required quite a bit of reading between the lines.  Changes I
made to the original K-350 design were more battery capacity and larger and
wider apart battery pods to accommodate, Minn Kota 101 based Kort thrusters
like I use for my boat, and totally new electronics including PLC and HMI,
full life support including BIBS and added two more viewports.  The MBT
system has been totally changed.  I am using two of Hugh Fulton's pneumatic
pancake style valves to blow the MBTs and am using Swagelok 3-Way valves to
operate the MBT and VBT.  Team is waiting on final budget approval before
we pull the trigger on the project.  Team has already received $15K in
equipment donations.

On the R300, I am in the process of switching control of the
compass/pitch/roll sensor which uses RS232 serial communication from  an
RS232 port on the PLC base to a dedicated PLC  coprocessor.  I have had
some intermittency issues with this sensor over the years and I am trying
this to see if this solves the problem.  What I really need is an O Scope
that has RS232 investigation feature.  With the work on the K-350 project,
I have just not had any spare time on my boat.  Hope to rectify that
shortly.  Got a consulting job I have to knock out next week in Oklahoma
City then I am free for the rest of the year to play with psubs.

Regards

Cliff


On Thu, Nov 3, 2016 at 3:15 PM, Alan James via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Thanks Cliff,
> no doubt I'll have more questions when I start
> trying to nail down what PLC, HMI & software.
> Have just ordered 2 of those digital to 0-5V converters
> for my remote system. Will give an update on them when
> they are up & running.
> Anything noteworthy on your R300 modifications? (if
> you have time for an update.)
> Cheers Alan
>
>
> ------------------------------
> *From:* Cliff Redus via Personal_Submersibles <
> personal_submersibles at psubs.org>
> *To:* Personal Submersibles General Discussion <
> personal_submersibles at psubs.org>
> *Sent:* Friday, November 4, 2016 5:06 AM
> *Subject:* Re: [PSUBS-MAILIST] PLC input question
>
> Alan, for PLC analog input devices, normally they are either 0-5VDC,
> 0-10VDC or 4-20mA.  You can by analog input modules for the PLC in any of
> these flavors.  Most popular are 0-5VDC and 4-20mA.
>
> Cliff
>
> On Thu, Nov 3, 2016 at 12:06 AM, Alan via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
> What is the best sensor input to get for a PLC or doesn't it matter.
> The pressure sensors I am coming across have either 0-5V output
> or some amp range.
> Wish I had heard Jon's talk at the last convention. Was that recorded?
> Thanks
> Alan
>
> Sent from my iPad
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