The Allen-Bradley 1746-IA16 provides 16 digital input channels that accept 120 VAC signals for SLC 500 programmable logic controllers. Each channel registers on/off status from field devices such as switches, sensors, and contactors operating on standard 120-volt AC power. The module mounts directly into an SLC 500 chassis and supplies optically isolated inputs to protect the processor from voltage transients common in industrial environments. It is typically installed in manufacturing, material handling, and process control panels where multiple AC input points must be monitored by a single SLC 500 rack.
