Allen-Bradley 1746-IH16: High-Density 125V DC Input Module
The 1746-IH16 from Allen-Bradley’s SLC 500 series delivers robust performance in demanding industrial settings. This 16-point DC input module handles high voltage applications with exceptional reliability. Rockwell Automation designed this module for both hazardous and standard industrial environments.
Core Technical Specifications
- Brand & Model: Allen-Bradley 1746-IH16
- Input Channels: 16 isolated DC sinking inputs
- Voltage Operating Range: 90-146V DC
- Nominal Input Current: 2.15mA @ 125V DC per point
- Backplane Power Consumption: 85mA @ 5V DC
- Response Time: 9ms ON/OFF delay
- Leakage Current: <0.8mA in OFF state
- Power Dissipation: 5.17 Watts maximum
- Isolation Voltage: 1500V RMS input to logic
Environmental & Performance Ratings
- Operating Temperature: 0°C to 60°C (32°F to 140°F)
- Storage Temperature: -40°C to 85°C (-40°F to 185°F)
- Humidity Range: 5-95% non-condensing
- Shock Resistance: 30G operational rating
- Vibration Immunity: 2.5G @ 57-200Hz
- Noise Immunity: NEMA ICS 2-230 compliant
- Hazardous Location: Class 1 Div 2 Groups A,B,C,D
- Connection System: Removable terminal block (1746-HT/HCA)
Installation & System Integration
- Mounts in any available slot of 1746 series chassis
- Uses 16 points per common grouping configuration
- Requires backplane current of 0.085A at 5V DC
- Compatible with all SLC 500 series processors
- For output applications, consider the 1746-OB16
- For high-current needs, explore the 1746-OB16E
Shipping & Package Contents
- Factory fresh 1746-IH16 input module
- Removable terminal block unit
- Installation documentation sheet
- Shipped via FedEx, UPS, or DHL express services
- 12-month warranty coverage included
Expert Technical FAQs
- What is the maximum off-state voltage drop? The module maintains less than 20V DC drop in off-state conditions.
- How many points can operate simultaneously at higher voltages? Six points at 146V DC, twelve points at 132V DC, all sixteen at 125V DC.
- What safety certifications does this module carry? It holds both C-UL and CSA certifications for industrial use.
- What is the step response characteristic? 100 milliseconds input response, 2.5 milliseconds output response.
- Does it provide input-to-logic isolation? Yes, complete circuit isolation between field inputs and control logic.
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