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P2k Analog Input Issues

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  • LWgreys
    replied
    Hey, could you send me a wiring diagram of your setup by email. I'll be glad to help!

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  • xyouman
    replied
    Yeah, I get the feeling that's whats going to have to happen. I'll talk to my bosses about it. Until next week, thanks for your help.

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  • RogerR
    replied
    Probably need to view the program or electrical schematics to gain any new insight.

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  • xyouman
    replied
    All the commons are correctly bonded. Took all day but I got it.

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  • xyouman
    replied
    I'll check all the commons right now and get back to you.

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  • RogerR
    replied
    Does the circuit break the common instead of the +dc voltage anywhere?

    Checking to see if the commons are all bonded completely.
    With the unit running and changing... If you check from one common point to each other common point in the different ends of the circuit with a volt meter on low range, is there a voltage?
    If there is, then maybe there is some kind of break or resistance from one common to another.

    Leave a comment:


  • xyouman
    replied
    No luck. I tested both channels that aren't working with analog inputs and the Data View "Toggle IO View". The channels are working fine; its something else. Could a specific signal cause this freezing? Or could a signal be ignored by the hardware somehow?

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  • xyouman
    replied
    I've switched the channels several times to check if it was any one channel. They all work, they just don't/can't measure these two signals.
    I'll give it a shot though; I'm at a complete loss as to why this doesn't work.

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  • MikeN
    replied
    Could you wire the analog outputs into your analog inputs, and then adjust the output level through data view in the program. It wont even require any ladder code to test, just the tags in a data view. Adjust the values for the output and see if the input it is wired to changes to match. That will let you know if the inputs or outputs are defective since nothing else will be wired in and no code in involved at all.

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  • xyouman
    replied
    Sorry I didn't see that comment until now since its on a new page...

    Do you mean an electrical print of the RPM simulator board or of the whole thing? I don't think I'd be able to post that online flat out; I'll find out.

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  • RogerR
    replied
    Hmmm..... Do you have an electrical print and a copy of the program to post?
    Someone here may be able to see what is happening.

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  • xyouman
    replied
    No the digital output module only sends on/off signals to a separate board. The board has a safe separation between the signals and the actual operation the board is used for (RPM simulation).

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  • RogerR
    replied
    Is the power to the digital output modules driving relays?

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  • xyouman
    replied
    The 24VDC power supply only powers the analog input, analog output, and the digital output modules. Is that enough separation?

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  • RogerR
    replied
    Not for each analog module, just keeping the analog and plc supplies separate from the rest.

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