NB1-P56X-AC — AC-powered expansion for NB1 racks
The Fuji Electric NB1-P56X-AC is an AC-powered expansion module for the NB1 series PLC platform. It extends the I/O count of an NB1 CPU rack, drawing its field power from the AC supply rather than the backplane bus.
The AC power input means the module connects directly to the control transformer or line voltage, bypassing the need for a dedicated 24 VDC bus for the expansion stage. This simplifies wiring in panels where AC is already run to the PLC section.