1746-NI16I Analog Input Module for SLC 500 by Allen-Bradley

Product Overview

The 1746-NI16I is a high-density analog input module. It belongs to the Allen-Bradley SLC 500 series. This module features sixteen single-ended inputs. It accepts current signals from 0 to 20 mA. It also handles 4 to 20 mA and ±20 mA signals. The module uses a sigma-delta conversion type. This provides 16-bit resolution for accurate data. It includes a programmable low-pass digital filter. Filter frequencies range from 6 Hz to 250 Hz. The step response time varies from 9 to 630 milliseconds. This module offers 500V ac isolation for one second. It has five green LED indicators for status. The 1746-NI16I fits any I/O slot except slot 0. It consumes 125 milliamps at 5 Volts. It also uses 75 milliamps at 24 Volts DC. The maximum backplane power is 2.425 Watts. The thermal dissipation is 2.43 Watts. This module supports open circuit detection. It actuates in less than 5 seconds. The input impedance is 249 ohms. The maximum current input is ±30 mA. It uses a 25-pin D-shell connector. The recommended cable is Belden 8761. The maximum wire size is 14 AWG.

Application Scenarios

This module is perfect for industrial automation. Use it in manufacturing plants and process control. It works well for monitoring flow, pressure, and level. The high resolution suits precise measurement tasks. The fast step response handles dynamic processes. Use it in water treatment facilities. It fits into chemical processing lines. The module also works in food and beverage production. It is ideal for machine monitoring systems. The 1746-NI16I works with other SLC 500 components. It connects to sensors and transmitters easily.

Technical Specifications

Inputs: Sixteen (16) single-ended. Electrical signal type: 0 to 20 mA, 4 to 20 mA, ±20 mA, and 0 to 1 mA. Backplane current (5 Volts): 125 milliamps. Backplane current (24 Volts DC): 75 milliamps. Thermal dissipation: 2.43 Watts. Conversion type: Sigma-Delta. Bandwidth: 6-250 Hertz. Step response: 9-630 milliseconds. Chassis location: Any I/O module slot except slot 0. Input filtering: Low-pass digital filter with programmable filter frequencies. Input filter frequencies: 6 Hz, 10 Hz, 20 Hz, 40 Hz, 60 Hz, 80 Hz, 100 Hz, 250 Hz. Isolation: 500V ac for 1 second. LED indicators: 5 green status indicators. Resolution: 16-bit. Voltage category: -20 to 20 mA. Backplane power consumption: 2.425 Watts maximum. Common mode voltage range: +/-10.25 Volts. Relative humidity: 5% to 95%. Operating temperature: -25 to 60 degrees Celsius. Nonoperating temperature: -40 to 85 degrees Celsius. Input impedance: 249. Maximum voltage input: ±8 Volts. Maximum current input: ±30 mA. AIFM connector: 25-pin D-shell. Data format: Engineering Units, Scaled for PID, Proportional Counts. Open circuit detection: Capable. Time to actuate: Less than 5 seconds. Recommended cable: Belden 8761. Maximum wire size: 14 AWG. Wires per terminal: Up to Two (2). UPC: 10611320228196.

Installation & Maintenance Guide

Install the 1746-NI16I in any I/O slot except slot 0. Ensure the backplane power is off before installation. Align the module with the guide rails. Push it firmly into the slot. Connect the 25-pin D-shell cable. Use Belden 8761 or equivalent cable. Tighten the connector screws. Wire the sensor signals to the terminal block. Use 14 AWG wire maximum. You can connect up to two wires per terminal. Check the LEDs for power and status. The green status LED confirms proper operation. For maintenance, keep the module clean. Avoid moisture and dust. Check the cable connections regularly. Replace damaged cables immediately. Do not expose the module to extreme temperatures. Store it in a dry environment.

Packing List

1x Allen-Bradley 1746-NI16I analog input module. 1x 25-pin D-shell connector. 1x user manual with installation guide. 1x warranty card. The module is packaged in an anti-static bag. It ships in a sturdy cardboard box. We use Fedex, UPS, or DHL for shipping. All items are new and original.