Powering a PLC and transmitters during a power failure
If your PLC takes an AC input, give it an AC input. UPS are there to accomodate any fluctuations and surge. Cause when AC mains comes back? Bye bye PLC.
I own a UPS business and I have seen plenty of people make a silly mistake like this and it will cost you dearly. The price of your UPS will be the least of your worries.
My two cents worth.