Posted 16 Feb 2016 Hey guys, New PLC user here, and I've been tasked to control a filtering system with a PLC. I'm thinking about getting an Allen-Bradley PLC, but I don't really know what to look for when choosing a PLC. The system should have around 10 digital inputs, about 20 digital outputs, and at least one analog input. I don't quite know if I should buy a bigger PLC, or a smaller one and buy extra slots? Also, the digital inputs (sensors) are rated at 10VA. I plan on using a 24VDC power supply. My outputs are primarily comprised of solenoid valves. that are also 24vdc rated. Can anybody help me pick a particular model? Thanks in advance. Share this post Link to post Share on other sites
