Allen-Bradley 1746-IV16 16-Channel Analog Input Module

The Allen-Bradley 1746-IV16 is a 16-channel digital DC input module for the SLC 500 family, delivering 16 current-sourcing DC inputs that accept 10–30 V DC signals, typically used to read 24 V DC field devices such as switches and sensors. Installed in a 1746 chassis, it presents each input's state to the connected SLC 500 CPU through the backplane, enabling fast, parallel monitoring of multiple discrete signals. The module's spec sheet notes a backplane current draw of about 85 mA at 5 V and a source-input signal delay of up to 8 ms, making it suitable for general-purpose digital input applications where 24 V DC logic is standard. As a sourcing input module, 1746-IV16 is designed to interface with standard 24 V DC sensors and provides straightforward integration within Rockwell Automation's SLC 500 I/O architecture.