One of the app note
http://apps.geindustrial.com/publibrary/checkout/AN18-001?TNR=Application and Technical|AN18-001|PDF&filename=AN18_001_Connecting power supplies in parallel.pdf
Maybe a little off-topic, but I need to have redundant power supplies (24V for the PLC) in a system. What is the best approach to this? Two power supplies running all the time in parallel or a relay that switches when a power supply fails? I'm not sure the relay would be fast enough to prevent the PLC and other related 24V hardware from going down.
Any education in this area would be greatly appreciated.
@Joe Tauser, do you have relevant experience with this?