1746-NT8
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The Allen-Bradley 1746-NT8 is an SLC 500 Thermocouple/mV analog input module used in SLC-500 PLC systems to convert multiple thermocouple and low-level mV signals into digital data for the processor. Featuring eight isolated input channels and high-resolution A/D conversion, it supports a wide range of thermocouple types, making it ideal for temperature monitoring and process measurement in industrial automation.
Technical Details
| Specification | Details |
|---|---|
| Manufacturer | Allen-Bradley (Rockwell Automation) |
| Product Line | SLC 500 I/O Modules |
| Model / Part No. | 1746-NT8 |
| Module Type | Thermocouple/mV Analog Input Module |
| Number of Channels | 8 isolated analog inputs |
| Supported Thermocouple Types | J, K, T, E, S, R, B, N |
| mV Input Compatibility | ±50 mV, ±100 mV |
| Backplane Current (5 V) | ~120 mA |
| Backplane Current (24 V) | ~70 mA |
| Power Consumption | ~2.28 W total |
| Resolution | 16 bits in, 14 bits out |
| A/D Conversion | Sigma-delta modulation with low-pass filter |
| Update Time | ~356 ms – 4.05 s (depends on configuration) |
| Input Filtering | Programmable low-pass notch filters |
| Isolation | ~500 V DC between inputs and chassis/backplane |
| Open-Circuit Detection | Zero, Upscale, Downscale selectable |
| LED Indicators | Status indicator + per-channel LEDs |
| Mounting | SLC 500 chassis (any slot except slot 0) |
| Operating Temp. Range | 0 °C – 60 °C |
| Storage Temp. Range | -40 °C – 85 °C |
| Typical Applications | Temperature measurement, process feedback, analog data acquisition |
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1 Year Warranty ( Manufacturer warranty DO NOT apply )