Description
Allen-Bradley 1746-NR8 RTD/Resistance Input Module
The Allen-Bradley 1746-NR8 offers precise temperature and resistance measurement for SLC 500 systems. This 8-channel module supports various RTD sensors and direct resistance inputs. It ensures accurate data acquisition for industrial process monitoring and control applications.
Key Technical Specifications
- Brand & Manufacturer: Allen-Bradley / Rockwell Automation
- Model: 1746-NR8 (SLC 500 Series)
- Module Type: RTD/Resistance Analog Input
- Number of Channels: 8 input channels
- RTD Types Supported: Platinum (385/3916), Copper, Nickel, Nickel Iron
- Resistance Ranges: 0-150Ω, 0-300Ω, 0-500Ω, 0-1000Ω
- Resolution: 0.01°C (temperature), 16-bit (resistance)
- Update Time: 6ms to 2s (programmable)
- Wiring Support: 2-Wire, 3-Wire, 4-Wire RTD configurations
- Backplane Current: 100mA @ 5V DC, 55mA @ 24V DC
- Power Consumption: 1.82W maximum
- Isolation: 500V AC (inputs to backplane)
- Operating Temperature: 0° to 60°C (32° to 140°F)
- Storage Temperature: -40° to 85°C (-40° to 185°F)
- Humidity Range: 5 to 95% non-condensing
- Conversion Method: Sigma-delta modulation
Package Contents
- One (1) 1746-NR8 RTD/resistance module
- Installation documentation
- All necessary mounting hardware
- Compatible with 1746-RT-35 terminal block
Shipping Options
- Fast worldwide shipping via FedEx
- Reliable delivery through UPS
- International shipping with DHL
- Secure professional packaging
Warranty Coverage
- 12-month warranty included
- Comprehensive defect coverage
- Quick technical support response
- Straightforward warranty process
Frequently Asked Questions
- Q: What RTD types does this module support?
A: The 1746-NR8 supports Platinum (385/3916), Copper, Nickel, and Nickel Iron RTD sensors. - Q: Can I use 2-wire RTD sensors with this module?
A: Yes, but use shorter cable runs and lower gauge wire for better accuracy with 2-wire configurations. - Q: What is the minimum update time for readings?
A: The module offers update times from 6 milliseconds to 2 seconds, programmable for your application needs. - Q: Does this module require external power?
A: No, it draws power directly from the SLC 500 backplane (100mA @ 5V DC, 55mA @ 24V DC). - Q: What cable types work best with this module?
A: Belden 9501 (2-wire), 9533 (3-wire), or 83503 (4-wire) shielded cables provide optimal performance.
Download User Manual
- Complete installation instructions
- Detailed wiring diagrams
- Configuration guidelines
- Download here: SLC 500 Hardware Manual
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