The Allen Bradley 1746-NR8 is an 8-channel RTD/Resistance analog input module from the SLC 500 series, designed for precise temperature and resistance measurements. It supports a variety of RTD types and resistance ranges, making it suitable for diverse industrial automation applications.
Technical Specifications
- Model: 1746-NR8
- Series: SLC 500
- Type: 8-Channel RTD/Resistance Analog Input Module
- Mounting: Rack-mounted (1 slot width)
- Input Channels: 8 individually configurable channels
- Resolution: 16-bit
- Update Time: 6 milliseconds to 2 seconds
- Backplane Current: 100 mA @ 5V DC; 55 mA @ 24V DC
- Isolation Voltage: 500V AC for 1 minute
- Operating Temperature: 0°C to 60°C (32°F to 140°F)
- Storage Temperature: -40°C to 85°C (-40°F to 185°F)
- Relative Humidity: 5% to 95% non-condensing
- Certifications: UL, CSA, CE
- Lifecycle Status: Discontinued
- Manufacturer: Allen Bradley (Rockwell Automation)
Key Features
- Eight analog input channels for RTD and resistance measurements
- Supports 2-, 3-, and 4-wire RTD connections
- High-resolution 16-bit analog-to-digital conversion
- Fast update time suitable for real-time monitoring
- LED indicators for channel status monitoring
- Compatible with SLC 500 chassis and processors
Compatible Components & Accessories
- Allen Bradley SLC 500 chassis and processors
- Allen Bradley I/O and communication modules
- RSLogix 500 programming software
- PanelView HMIs and expansion I/O
Industry Applications
- Process control systems
- Temperature monitoring in manufacturing
- Water treatment and utilities
- Food and beverage processing
- Pharmaceutical manufacturing
Installation & Maintenance Notes
- Install in a clean, dry panel or cabinet
- Ensure proper alignment in the chassis slot
- Configure each channel for the appropriate RTD type or resistance range
- Periodically inspect for dust or electrical wear
- Use RSLogix 500 for diagnostics and setup
- Power down before removing or inserting module
Request a Quote
For pricing and availability, please Contact Us or call 1-800-755-2883.
Disclaimer: TCI Supply is not an authorized distributor of Allen Bradley products.
Frequently Asked Questions
What types of RTD sensors are compatible with the 1746-NR8 module?
The 1746-NR8 supports various RTD types, including Platinum (100, 200, 500, 1000 Ω), Nickel (120 Ω), Copper (10 Ω), and Nickel Iron (604 Ω).
Can the 1746-NR8 module detect open or short circuits in RTD sensors?
Yes, the module provides broken sensor detection for each input channel, indicating open- or short-circuit conditions.
What is the resolution of the analog inputs on the 1746-NR8 module?
The module offers a 16-bit resolution for analog inputs, allowing for precise measurement and control.