Description
Allen-Bradley 1756-IRT8I: 8-Channel Isolated Temperature Input Module
The Allen-Bradley 1756-IRT8I is a high-accuracy temperature input module for ControlLogix systems. It handles RTD, thermocouple, and millivolt signals with excellent isolation and precision.
Complete Technical Specifications
- Brand: Allen-Bradley / Rockwell Automation
- Full Model: 1756-IRT8I
- Module Type: 8-channel Isolated Temperature Input
- Input Types: RTD, Thermocouple, Millivolt
- Resolution: 24-bit (up to 0.01 µV/count)
- RTD Types: PT100, PT200, PT500, PT1000, NI120, CU10
- Thermocouple Types: J, K, T, E, R, S, B, N, C
- Input Range: -100 to +100 mV
- Accuracy: ±0.3°C
- Scan Time: 1ms per channel
- Power Use: 4.6W max, 200mA @ 5V, 150mA @ 24V
- Isolation: 250V between channels
- Terminal Blocks: Requires 1756-TBNH or 1756-TBS6H
Compatibility Information
The 1756-IRT8I works with all ControlLogix systems. It fits standard 1756 chassis slots.
Installation Guide
This module needs a 36-pin terminal block. Choose 1756-TBNH or 1756-TBS6H. Install in chassis, add terminal block, and connect sensors.
Download Product Manual
- Complete wiring diagrams
- Configuration examples
- Troubleshooting guide
- Get full documentation: 1756 ControlLogix I/O Manual
Professional FAQ
- What sensor types does it support? – RTD, thermocouple, and millivolt
- What is the measurement accuracy? – ±0.3°C for temperature
- Does it need external signal conditioning? – No, all processing is internal
- Can I mix different sensor types? – Yes, each channel is independent
- What is the operating temperature? – 0 to 60°C (32 to 140°F)
Shipping & Warranty
We ship worldwide via FedEx, UPS, and DHL. Full 12-month warranty included.
Package Includes
- One 1756-IRT8I module
- Installation guide
- (Terminal block sold separately)










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