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1746-NR4 | Allen-Bradley SLC 500 4-Channel RTD/Resistance Analog Input Module
- Regular price
- $399.00
- Sale price
- $399.00
- Regular price
-
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Product Description P/N: 1746-NR4
Description
The Allen-Bradley 1746-NR4 is a four-channel RTD and resistance analog input module designed for SLC 500 systems. It supports multiple RTD types, including platinum, copper, nickel, and nickel-iron elements, as well as direct resistance inputs across several ranges. Using sigma-delta A/D conversion and digital filtering, the module delivers accurate temperature and resistance measurements for industrial monitoring and control.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Allen-Bradley |
| Category | PLCs/Machine Control |
| Part Number | 1746-NR4 |
| Subcategory | PLC Module/Rack |
| Series | SLC 500 |
| Module Type | RTD/Resistance Analog Input |
| Inputs | 4 channels |
| Compatible RTD Types | Platinum (385/3816), Copper (426), Nickel (618/672), Nickel Iron (518) |
| Resistance Input Ranges | 0–150 Ω, 0–300 Ω, 0–500 Ω, 0–1000 Ω |
| Bandwidth | 2.62–65.5 Hz |
| Update Time | 17 ms–1.2 s |
| Step Response | 60 ms in, 2.5 ms out |
| Resolution | 0.01 °C |
| A/D Conversion Method | Sigma-delta modulation |
| Backplane Current | 50 mA @ 5 VDC; 50 mA @ 24 VDC |
| Backplane Power Consumption | 1.5 W max |
| Operating Isolation | 500 V for 1 minute |
| Operating Temperature | 0–60 °C |
| Storage Temperature | –40 to 85 °C |
| I/O Chassis Location | Any slot except Slot 0 |
| Diagnostics | Broken sensor/open-circuit detection |
| LED Indicators | 1 module status, 4 channel status |
Information About 1746-NR4
The 1746-NR4 is part of the SLC 500 family, providing a dedicated interface for RTD and resistance sensors in both fixed and modular SLC 500 architectures. Built with sigma-delta conversion and low-pass digital filtering, it ensures stable, high-resolution measurement across a wide range of sensor types and resistance inputs. Its four isolated input channels support sensor fault detection and automatic self-calibration when configuration parameters are changed. Typical applications include temperature monitoring, displacement measurement, process feedback, and equipment position sensing where high-accuracy RTD inputs are required.
Key Features:
- Four RTD/resistance input channels: Supports platinum, copper, nickel, and nickel-iron sensors.
- Multiple resistance ranges: Accepts 0–150 Ω, 0–300 Ω, 0–500 Ω, and 0–1000 Ω signals.
- Sigma-delta conversion: Provides stable, high-resolution temperature measurements.
- Digital filtering: Programmable low-pass filter for noise reduction.
- Channel status LEDs: One module status LED plus four channel indicators.
- Self-calibrating design: Automatically recalibrates when configuration changes occur.
- Backplane-powered: Requires no external power supply.
- Wide temperature operating range: Suitable for 0–60 °C industrial environments.
The 1746-NR4 delivers the reliability and precision required for temperature sensing and resistance-based industrial measurement.
Description
The Allen-Bradley 1746-NR4 is a four-channel RTD and resistance analog input module designed for SLC 500 systems. It supports multiple RTD types, including platinum, copper, nickel, and nickel-iron elements, as well as direct resistance inputs across several ranges. Using sigma-delta A/D conversion and digital filtering, the module delivers accurate temperature and resistance measurements for industrial monitoring and control.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Allen-Bradley |
| Category | PLCs/Machine Control |
| Part Number | 1746-NR4 |
| Subcategory | PLC Module/Rack |
| Series | SLC 500 |
| Module Type | RTD/Resistance Analog Input |
| Inputs | 4 channels |
| Compatible RTD Types | Platinum (385/3816), Copper (426), Nickel (618/672), Nickel Iron (518) |
| Resistance Input Ranges | 0–150 Ω, 0–300 Ω, 0–500 Ω, 0–1000 Ω |
| Bandwidth | 2.62–65.5 Hz |
| Update Time | 17 ms–1.2 s |
| Step Response | 60 ms in, 2.5 ms out |
| Resolution | 0.01 °C |
| A/D Conversion Method | Sigma-delta modulation |
| Backplane Current | 50 mA @ 5 VDC; 50 mA @ 24 VDC |
| Backplane Power Consumption | 1.5 W max |
| Operating Isolation | 500 V for 1 minute |
| Operating Temperature | 0–60 °C |
| Storage Temperature | –40 to 85 °C |
| I/O Chassis Location | Any slot except Slot 0 |
| Diagnostics | Broken sensor/open-circuit detection |
| LED Indicators | 1 module status, 4 channel status |
Information About 1746-NR4
The 1746-NR4 is part of the SLC 500 family, providing a dedicated interface for RTD and resistance sensors in both fixed and modular SLC 500 architectures. Built with sigma-delta conversion and low-pass digital filtering, it ensures stable, high-resolution measurement across a wide range of sensor types and resistance inputs. Its four isolated input channels support sensor fault detection and automatic self-calibration when configuration parameters are changed. Typical applications include temperature monitoring, displacement measurement, process feedback, and equipment position sensing where high-accuracy RTD inputs are required.
Key Features:
- Four RTD/resistance input channels: Supports platinum, copper, nickel, and nickel-iron sensors.
- Multiple resistance ranges: Accepts 0–150 Ω, 0–300 Ω, 0–500 Ω, and 0–1000 Ω signals.
- Sigma-delta conversion: Provides stable, high-resolution temperature measurements.
- Digital filtering: Programmable low-pass filter for noise reduction.
- Channel status LEDs: One module status LED plus four channel indicators.
- Self-calibrating design: Automatically recalibrates when configuration changes occur.
- Backplane-powered: Requires no external power supply.
- Wide temperature operating range: Suitable for 0–60 °C industrial environments.
The 1746-NR4 delivers the reliability and precision required for temperature sensing and resistance-based industrial measurement.