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The 1746sc-INI4I from Allen Bradley is an isolated analog input module designed for use within the SLC 500 series. It features four channels specifically for current inputs and supports a variety of voltage ranges suitable for advanced applications.
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| Manufacturer | Allen Bradley |
|---|---|
| Product Type | Isolated Analog Input Module |
| Product Line | SLC 500 |
| Part Number | 1746sc-INI4I |
| Weight | 0.44 lbs (0.20 kg) |
| Channel Filtering Options | Selectable for noise rejection or fast update |
| Accuracy (Voltage Inputs) | ±0.1% of full scale |
| Accuracy (Current Inputs) | ±0.1% of full scale |
| Channel Update Rate | 10 ms per channel |
| Channel-to-Channel Isolation | 1500 VDC |
| Input Impedance (Voltage) | 1 MΩ |
| Input Impedance (Current) | 250 Ω |
| Resolution (Voltage Inputs) | 16 bits |
| Resolution (Current Inputs) | 16 bits |
| Voltage Input Ranges (INI4VI Variant) | 0–5 V, 1–5 V, 0–10 V, ±10 V |
| Current Input | 0–20 mA, 4–20 mA |
| Input Type | Differential Current Inputs |
| Number of Input Channels | 4 Isolated Current Inputs |
At the core of the 1746sc-INI4I is the function of isolating analog inputs for safe and accurate measurements. This module excels in managing noise and offers flexible filtering options to accommodate different operational requirements. Each of the four input channels is capable of processing differential current inputs, designed to handle dynamic ranges effectively. The module boasts an accuracy rate of ±0.1% for both voltage and current inputs, ensuring reliable performance in signal acquisition.
Designed with practical specifications, the input channels feature a high input impedance of 1 MΩ for voltage inputs, facilitating the connection of a wide array of sensors without affecting their operation. In contrast, current inputs come with an impedance of 250 Ω. It supports numerous voltage input ranges, including 0–5 V, 1–5 V, 0–10 V, and ±10 V. Current input ranges include both 0–20 mA and 4–20 mA, making it versatile enough for various applications.
Notably, the module also achieves a fast channel update rate of 10 ms per channel, allowing for real-time data monitoring and processing. With an isolation capability of 1500 VDC between channels, the 1746sc-INI4I minimizes the risk of signal interference, resulting in enhanced system integrity. The SLC 500 series continues to provide robust solutions for industrial control, and this module supports a wide range of analog applications efficiently.
| Revision Part # | Also known as | |
|---|---|---|
| 1746sc-INI4I Ser A | 1746sc-INI4I/A, Series A, Rev A | |
| 1746sc-INI4I Ser B | 1746sc-INI4I/B, Series B, Rev B | |
| 1746sc-INI4I Ser C | 1746sc-INI4I/C, Series C, Rev C | |
| 1746sc-INI4I Ser D | 1746sc-INI4I/D, Series D, Rev D | |
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