Allen-Bradley 1771-NBSC High Resolution Isolated Analog Module

Allen-Bradley 1771-NBSC High Resolution Isolated Analog Module is an eight-channel backplane I/O module for 1771-N Series PLCs that provides isolated analog inputs with high-resolution conversion. Each channel is galvanically isolated from the backplane and from other channels, helping prevent ground loops and noise in harsh industrial environments. The NBSC module accepts common analog signals, including 4-20 mA current loops and corresponding voltage ranges, converting them through a high‑resolution analog-to-digital converter before the data is read by the PLC-5/SLC 500 processor. Designed for use with Allen-Bradley 1771 backplanes, it integrates into standard I/O slots and supports the isolation and filtering typical of 1771-N Series modules, enabling accurate process measurement and reliable automation control.