R985 (Customer) asked a question.

October 24, 2022 at 3:06 PM
Power over Ethernet (POE) power supply for P1000 PLC?

We've found that the P1000 PLC is a great piece of hardware for distributed control, machine automation, and machine monitoring across our facility. In most cases, each PLC is connected to just a handful of I/O points, so each installation draws relatively little power. Since we have to run network cable to the PLC anyway, it would be great if we could just power the PLC via Power Over Ethernet, rather than finding a local power source at the point of installation.

 

Does anyone know of a piece of hardware that can connect inline with the P1000's ethernet cable and supply 24vdc to the PLC via POE?

 

Thanks!

 

Matthew

  • 7 answers
  • 848 views

  • R985 (Customer)

    I wish it was DIN mountable, but aside from that, it looks like exactly what I was searching for. I'll give it a shot.

     

    Thanks!

     

    m

    • PouchesInc (Customer)

      Looks like it actually has a DIN rail mount adapter too.

       

      Just be aware that if your switch is putting out regular PoE (15w) and not PoE+ that you will probably be limited to 1-2 IO modules on the P1000. The splitter says it uses 7w, and the P1k CPU used 5w. PoE+ should let you use 12 modules easily.

  • z28z34man (Customer)

    Keep us informed on how it works. it is an interesting idea and if it works well for you I might be able to find a use case in the future.

  • R985 (Customer)

    I've ordered the Trendnet device (and I now see the DIN rail adapter). I'll test it and report back to the group. I appreciate the help!

  • R985 (Customer)

    I've been testing the Trendnet TI-SG104 with a Productivity PLC, and the setup seems to work fine. The splitter, Productivity CPU and 8 I/O modules (no loads) draw a total power of 4.23w. I'm not sure I'd be comfortable switching inductive loads with this configuration, but it does seem like a nice distributed automation solution.

  • WireBiter665 (Customer)

    I have actually done something like this. I needed to power up a field I/O and an HMI at a remote station that had no easy access to power. What I did was made a custom RJ-45 end for the PLC that left 2 of the conductors out (the brown pair) and connected them to the 24V supply in the same panel as the PLC (properly protected, of course). Then on the other end I did the same and landed the brown pair on a terminal strip. You also need to be aware of the limits of PoE as far as voltages and power.

 

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