TomB Posted October 19, 2019 Report Share Posted October 19, 2019 Hi, new to Unitronics, familiar with AB/Rockwell. I'm sitting on a job site and am looking for any help I can find. We had a panel that had a hi voltage hit, and we believed it fried one of the IO-AI4-AO2 cards, as all the input values on the LED's are showing out of range. I replaced this, and same issue, no resolution. I've checked every input wire to the card - all are ~ 4 mA. Value to the HMI/PLC is maxed out. Not sure where to go from here. My engineer back in factory says just replace the whole damned set up - but that seems like an extreme move, as all the other cards seem to be working fine. Any chance that card before (same type) or after (AI8) or the flex cables could be contributing to the issue? I'm lost ... Quote Link to comment Share on other sites More sharing options...
MVP 2023 Ausman Posted October 19, 2019 MVP 2023 Report Share Posted October 19, 2019 Tom, what Unitronics species of plc is the I/O on? cheers, Aus Quote Link to comment Share on other sites More sharing options...
MVP 2023 Joe Tauser Posted October 20, 2019 MVP 2023 Report Share Posted October 20, 2019 Are there any other analog modules that are working properly? The EX-A2X may have an issue. Or is it connected to an EX-RC1? Vision or UniStream? Joe T. Quote Link to comment Share on other sites More sharing options...
TomB Posted October 21, 2019 Author Report Share Posted October 21, 2019 This is connected to an EX-A1 expansion module. The HMI/PLC is a Vision 570 There are 2 other analog modules in the set up. There is an identical IO-AI4-AO2 module immediately preceding the one that isnt working correctly, and there is an 8 channel analog input card immediately following. Both of these are working fine. Quote Link to comment Share on other sites More sharing options...
MVP 2023 Flex727 Posted October 21, 2019 MVP 2023 Report Share Posted October 21, 2019 Moved to the appropriate forum. Quote Link to comment Share on other sites More sharing options...
TomB Posted October 21, 2019 Author Report Share Posted October 21, 2019 Thanks. Quote Link to comment Share on other sites More sharing options...
MVP 2023 Joe Tauser Posted October 21, 2019 MVP 2023 Report Share Posted October 21, 2019 Systematic problem elimination- The problem may be in your wiring. I saw that you have 4 mA on each wire but that doesn't mean that there's not something flowing between the channels. These modules are not isolated. Disconnect all the inputs and put a jumper between I and COM on each channel. It will still show out of range but the values to the PLC should read zero. Let us know what happens. Joe T. Quote Link to comment Share on other sites More sharing options...
MVP 2023 Ausman Posted October 22, 2019 MVP 2023 Report Share Posted October 22, 2019 Tom, a simple thing to try....just in case it needs it.....have you done an Initialise and Reset? Available either via online, or through Info mode. cheers, Aus Quote Link to comment Share on other sites More sharing options...
TomB Posted October 22, 2019 Author Report Share Posted October 22, 2019 Ausman, I'm not that familiar with this control platform. How exactly is that done? Quote Link to comment Share on other sites More sharing options...
MVP 2023 Joe Tauser Posted October 23, 2019 MVP 2023 Report Share Posted October 23, 2019 Info mode allows you to access the PLC functions and registers. Search the Help for it. Joe T. Quote Link to comment Share on other sites More sharing options...
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