NickButt Posted October 31, 2020 Report Share Posted October 31, 2020 Hi everyone I have three V350-35-TA24’s running identical wiring, programming, jumpers etc. They have been running trouble free for 5-6 years up until now, controlling fluid pumps. One of them has seemingly experienced a failure of both analogue outputs. The jumpers are still in place. Digital outputs still work fine. Inputs work fine. This output was using 4-20mA to control a proportional pressure regulator. I have swapped the faulty unit out with the other two working units and the fault follows along. I have only ever used A0, and so tried switching to A1 but still nothing. A1 had never been used prior to this. I think these would be individually fused? I have re-loaded the program in-case some sort of file corruption had occurred. The only thing I haven’t tried, is swapping out the plug in I/O board with one of the other known working units, to find out if it's the I/O or the PLC itself. I am nervous about trying this as I can’t afford to have a second one fail if something has caused a component to blow. I’m 99% sure this is a hardware failure. Does anyone have a suggestion of something to check, or is it likely toast? Is there a schematic of the board available? Is it possible to buy just the I/O board? Regards Nick Quote Link to comment Share on other sites More sharing options...
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.