SLC 500 | Allen-Bradley | 1746-IN16 SER C Digital SLC 500 Input Module 1746IN16

Product Description: Allen-Bradley 1746-IN16

The Allen-Bradley 1746-IN16 is a 16-point digital input module designed for use with the SLC 500 programmable logic controller system. It supports 120V AC input signals and provides reliable monitoring of discrete devices such as switches, sensors, and pushbuttons in industrial environments. With channel- to-backplane isolation and high signal integrity, it is well-suited for general-purpose AC input applications.

Key Features

• 16 digital AC input channels
• Accepts 120V AC input signals (50/60 Hz)
• LED indicators for individual channel status
• Optically isolated inputs from backplane logic
• Removable terminal block for easy wiring and maintenance
• Compatible with all SLC 500 processors and chassis
• Wide operating temperature range

Technical Specifications

• Number of Inputs: 16
• Input Voltage Range: 79–132V AC (nominal 120V AC)
• Frequency: 47–63 Hz
• On-State Voltage: ≥79V AC
• Off-State Voltage: ≤20V AC
• On-State Current: 6 mA
• Backplane Current Draw: 70 mA at 5V DC
• Isolation Voltage: 1500V RMS (field to backplane)
• Operating Temperature: 0°C to 60°C
• Module Width: 1 slot

Application Areas

• Discrete input monitoring in industrial control systems
• AC-powered sensor and switch signal acquisition
• Conveyor and packaging machinery control
• Building automation systems
• Panel-mounted operator control stations

Advantages

• High-density 16-channel design maximizes I/O per slot
• Reliable AC signal detection for robust performance
• Optical isolation protects the controller and improves safety
• Simplified wiring with removable terminal block
• Ideal for large- scale discrete input applications