Spectrum 1734SC-IE4CH Analog Input Module

Spectrum 1734SC-IE4CH, marketed under Spectrum Controls as the POINT I/O analog input module, provides four independent analog channels with integrated HART support for 4–20 mA process signals within a POINT I/O network. Each channel delivers a 16‑bit measurement with a 250 Ω input impedance and supports a 4–20 mA input range; the module uses single‑ended, non‑isolated inputs and offers 28 mA of overcurrent protection. It draws about 20 mA from the 24 V backplane; compatibility notes include not being compatible with a 12‑pin base. The unit is UL/cUL listed (ANSI ISA 12.12.01 Class I, Div 2, Groups ABCD) and CE certified, factory calibrated with optional user calibration, and can operate from −20 to 55 °C with 5–95% non‑condensing humidity. In addition to standard analog data, it can serve as a HART master for communication with HART field devices, enabling both analog measurements and digital sensor data to be read in a single module. This makes the 1734sc-IE4CH well suited for industrial automation tasks requiring reliable 4–20 mA signal acquisition and embedded digital sensor data within a Rockwell/POINT I/O infrastructure.