I am currently working with a PLC having a power supply unit that accepts dual input voltage (the one that tells "short 110V, open 200V"). I must have been out of my mind because I plugged in the 200V supply on that termination instead of plugging it to the power supply termination. After a few seconds, smoke came out of the power supply unit - I definitely burnt it.
I take out the power, let it rest a while then plugged the 200V supply this time on the correct termination. To my surprise, the power supply unit, CPU and the rest of the gang are in run mode like nothing had happened.
My question - is it still safe to use this unit after what had happened? It may run now but I'm not sure how long will it run in good condition after smoke came out of it.
Please advise.
I take out the power, let it rest a while then plugged the 200V supply this time on the correct termination. To my surprise, the power supply unit, CPU and the rest of the gang are in run mode like nothing had happened.
My question - is it still safe to use this unit after what had happened? It may run now but I'm not sure how long will it run in good condition after smoke came out of it.
Please advise.