Here’s a clear and concise breakdown of the Allen-Bradley 1746-IB8(C) module:

 Electrical Specs

• Type: Digital DC input module (sinking)
• Input Channels: 8 discrete inputs
• Voltage Range: 10–30V DC (nominal 24V DC)
• Input Current: ~8 mA per channel  24V DC
• Signal Delay: 8 ms ON/OFF transitions
• Backplane Current Draw: 50 mA 5V DC

 Configuration & Wiring

• Input Type: Sinking (requires sourcing field devices)
• Common Terminal: 8 points per common
• Compatible Devices: Sensors, switches, relay contacts

 Physical & Environmental

• Dimensions: Compact size for SLC 500 chassis
• Operating Temp: 0°C to 60°C
• Humidity: 5–95% non-condensing
• Shock/Vibration: 30G shock, 2.5G vibration