1746-IN16I Allen Bradley Analog Input Module
Specification
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Product Description
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The Allen‑Bradley 1746‑NI16I is a 16‑channel analog input module designed for use with the Allen‑Bradley SLC 500 programmable logic controller (PLC) family.
It provides high‑density analog signal acquisition for process automation systems — allowing a PLC to read multiple analog sensor values
simultaneously.This module interfaces analog field signals (current or voltage) from sensors such as transmitters, pressure/flow
instruments, temperature sensors (with signal converters), etc., into the SLC 500 control system
for monitoring and control in industrial automation.
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| More Technical Data |
| Channels |
16 isolated analog input channels.
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| Resolution |
16‑bit Sigma‑Delta conversion for accurate digitization.
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| Indicators |
LED status indicators — four group LEDs (one per 4 channels) plus module status LED — for quick diagnostics.
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| Frequently Asked Questions |
1. What signals can the 1746‑NI16I read?
It supports a wide range of analog signal types — both voltage and current — such as 4–20 mA loops, 0–10 V signals, and ±20 mA or 0–1 mA ranges for different sensor types.
2. How many analog channels does it have?
It offers 16 isolated analog input channels, so each sensor signal is electrically isolated from others to reduce noise and improve accuracy.
3. What does “isolation” mean?
Isolation means that each input (or groups of inputs) is electrically separated from the PLC backplane and other
electronics to prevent noise, ground loops, and interference. This improves measurement reliability.
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