35Input and Output Interface PortsChapter 3Notes on Output Terminal• The PV310 has a low load capacity, which allows you to connect the device to a PLC, etc. Do not directlyconnect the PV310 to a device having a high load capacity, such as a valve, without passing it through ourPower-Photo relay.• The output circuit contains no built-in fuse. If it is necessary to prevent from burning out the output circuit inthe event of output load short circuit, mount an external fuse. However, it may not be able to protectinternal elements in the event of short circuit.• The COMMON terminal is exclusively for FLASH. Do not commonly use the terminal with other COMterminals.