1746-NR8
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These parts come in their original packaging, although they are currently open and may display an older date code. Each item is pre-owned but has been carefully maintained and is in excellent condition, ensuring reliable performance. Please note that Marci Network Hardware is not an authorized distributor for the manufacturers or tradenames listed, so the original manufacturer’s warranty does not apply. These parts are ideal for professionals or hobbyists seeking quality components at a great value.
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Refurbished packaging refers to the packaging used for a product that has been previously owned, returned, or repaired, and then restored to a like-new or fully functional condition. Unlike original packaging, which comes directly from the manufacturer, refurbished packaging may not look brand-new and could be a plain box or a repackaged version provided by the refurbished.
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The Allen-Bradley 1746-NR8 is an RTD/resistance analog input module designed for use with SLC 500 programmable controller systems. It provides 8 analog input channels capable of measuring resistance directly from RTD sensors (2-, 3-, or 4-wire configurations) or resistance ranges for process feedback. The module digitizes the resistance measurement with sigma-delta conversion and delivers accurate, noise-immune data to the SLC CPU for monitoring and control tasks in industrial automation applications.
Technical Details
| Specification | Details |
|---|---|
| Product Name | Allen-Bradley 1746-NR8 |
| Module Type | RTD/Resistance Analog Input Module |
| PLC System | SLC 500 |
| Number of Input Channels | 8 |
| Supported Sensor Types | RTDs (Platinum, Copper, Nickel, Nickel-Iron) |
| Resistance Input Range | 0–150 Ω, 0–300 Ω, 0–500 Ω, 0–1000 Ω |
| Input Resolution | High resolution (e.g., ~0.01 °C) |
| A/D Conversion | Sigma-delta modulation |
| Backplane Current (5 V) | ~100 mA |
| Backplane Current (24 V) | ~55 mA |
| Backplane Power Consumption | ~1.82 W maximum |
| Update Time | 6 ms to 2 s (depending on configuration) |
| Input Filtering | Low-pass digital filter (programmable) |
| Isolation | Channel isolation via backplane |
| Status Indicators | Module and per-channel LEDs |
| Operating Temperature | 0 °C to 60 °C |
| Storage Temperature | -40 °C to 85 °C |
| Relative Humidity | 5 % to 95 % non-condensing |
| Mounting | SLC 500 chassis slot (not slot 0) |
| Typical Use Case | Temperature measurement via RTDs, resistance process monitoring |
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1 Year Warranty ( Manufacturer warranty DO NOT apply )