What is remote I/O?
Remote I/O refers to a remote input/output system that transfers data from analog to digital form so that field devices can communicate with a network.
Types of remote I/O include LB and FB. Both LB and FB perform the same function. The difference between them is the type of hazardous environment and methods of protection each one is rated for. LB remote I/O is rated for mounting in Zone 2 and 22, Div. 2 with intrinsic safety protection methods Ex ia, Ex ib, and Ex ic. FB remote I/O is rated for mounting in Zone 1 and 21 with intrinsic safety protection methods Ex ia and Ex ib.
