Allen-Bradley 1745-E151 SLC 150 Extension Unit

The Allen-Bradley 1745-E151 is a Series B SLC-150 expansion unit that extends the I/O capacity of SLC-150 PLC systems by adding an expansion backplane to accommodate additional I/O modules. Designed for use with Allen-Bradley SLC-150 controllers, the module plugs into the expansion bus to enable remote I/O expansion within the same SLC-150 family, letting engineers scale a control panel without replacing the CPU. Power is supplied over a broad AC range of 10-250 VAC at 50/60 Hz, making it compatible with common industrial power environments. As part of the SLC-150 expansion lineup, the 1745-E151 Series B unit is typically used to retrofit legacy installations needing more I/O points, preserving the existing SLC-150 processor while expanding capacity.