1756-IR6I Allen-Bradley | ControlLogix RTD Input Module

Allen-Bradley 1756-IR6I – High-Precision RTD Input Module

Technical Specifications

• Input Type: RTD/resistance
• Channels: 6 fully isolated
• RTD Types: PT100/200/500/1000, Ni120, Cu10
• Resolution: 16-bit (7.7mΩ/bit to 60mΩ/bit)
• Scan Time: 25ms (ohms), 50ms (temperature)
• Terminal Blocks: 1756-TBNH or 1756-TBSH
• Power Use: 4.3W max
• Data Formats: Integer or floating point
• Temperature Units: °C or °F selectable

Easy Installation

• Fits any 1756 ControlLogix chassis
• Simple wiring with terminal blocks
• LED status indicators

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Expert Answers

1. What RTD types are supported?
   Platinum (PT100-1000Ω), Nickel (120Ω), Copper (10Ω).
2. Can I mix different RTD types?
   Yes, each channel can be configured independently.
3. How accurate is the temperature reading?
   ±0.1°C typical with proper calibration.
4. What’s the maximum wire length?
   Recommended under 100m for best accuracy.
5. Does it support temperature alarms?
   Yes, configurable high/low/rate alarms.

Package Contents

• 1x 1756-IR6I input module
• Installation guide

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