Allen-Bradley 1746-IH16 | 125V DC Sinking Input Module

Allen-Bradley SLC 500 High Voltage Input Module 1746-IH16

The Allen-Bradley 1746-IH16 is a 16-point high voltage DC input module for the SLC 500 system. It is designed to interface with 125V DC field devices like limit switches and proximity sensors in industrial control applications.

Technical Specifications

• Brand & Model: Allen-Bradley 1746-IH16
• Series: SLC 500 I/O Module
• Module Type: 16-Point Sinking DC Input
• Input Voltage: 125 V DC nominal
• Voltage Range: 90 to 146 V DC
• Number of Inputs: 16 points
• Input Current: 2.15 mA @ 125V DC, 2.25 mA @ 132V DC
• Points per Common: 16 (single common)
• On-State Threshold: > 74 V DC minimum
• Off-State Voltage (max): 20.0 V DC
• Off-State Current (max): 0.8 mA
• Response Time: 9 ms maximum (ON to OFF or OFF to ON)
• Backplane Current (5V): 85 mA
• Operating Temperature: 0°C to 60°C (with derating)
• Module Weight: 0.3 kg

Shipping Information

• 1x 1746-IH16 input module
• Approximate shipping weight: 0.5 kg
• Secure protective packaging
• Shipped via FedEx, UPS, or DHL

FAQ

• What does "sinking input" mean?
  The module provides the path to ground (-). The field device must supply the positive voltage (+V) to the input point to activate it.
• What is thermal derating?
  As temperature increases, the module can safely power fewer inputs simultaneously. For example, at 60°C, all 16 points can be on only at 125V DC.
• Can it be used with 24V DC sensors?No, the minimum ON voltage is 74V DC. This module is specifically for high-voltage DC circuits, typically 125V DC.