The 1746-IH16 is a 16-point digital input module from Allen-Bradley, part of the SLC 500 series. This module provides current-sinking 125V DC inputs and is designed for use in both general-purpose and hazardous industrial environments (Class 1, Division 2). It offers reliable operation with a wide voltage range, drawing minimal power and ensuring effective isolation between inputs and control logic.

Technical Specifications

• Manufacturer: Rockwell Automation
• Brand: Allen-Bradley
• Part Number: 1746-IH16
• Series: SLC 500
• Module Type: Digital DC Input Module
• Inputs: 16 current-sinking inputs
• I/O Connection: 1746-HT and 1746-HCA
• Voltage Range: 90-146 VDC Sink
• Nominal Input Current:
  • 2.15 mA at 125 VDC
  • 2.25 mA at 132 VDC
• Off-State Current: 0.8 mA
• Off-State Voltage: Maximum 20 VDC
• Backplane Current: 85 mA at 5 VDC
• Signal Delay: 9 ms (ON and OFF state)
• Step Response: 100 ms in, 2.5 ms out
• Power Dissipation: 5.17 Watts
• Temperature Range:
  • Operating: 0 to 60 °C (32 to 140 °F)
  • Storage: -40 to 85 °C (-40 to 185 °F)
• Humidity: 5% to 95% (non-condensing)
• Shock Rating: 30G
• Vibration Rating: 2.5G at 57-200 Hz
• Noise Immunity: NEMA ICS 2-230-rated
• Weight: 1.00 lbs