1746-NO4I SLC 500 Analog Output Module by Allen-Bradley

Product Overview

The Allen-Bradley 1746-NO4I is a SLC 500 analog output module. It has four current output channels. The module delivers signals from 0 to +20 mA. It uses a 14-bit resolution converter. The conversion method is R-2R Ladder. This module works with fixed or modular SLC 500 hardware. An open enclosure design allows easy access. A removable terminal block simplifies wiring. The module draws 55 mA at 5 Volts from the backplane. It draws 195 mA at 24 Volts DC. An LED status indicator shows module health.

Application Scenarios

This module drives modulating instruments and devices. Typical uses include controlling valves and actuators. It works with PID controllers for process control. The analog output represents the control output signal. It also re-transmits signals for data logging. Use it for signal conversion and indication. The module supports manual loading stations. It is ideal for factory automation and process industries.

Technical Specifications

The 1746-NO4I has a load range of 0 to 500 ohms. Maximum load reactance is 100 µH. Full scale output is 21 mA. Overrange capability is 5 percent. Output coding is 0 to +32764. Update time is 512 microseconds. Step response is 2.5 milliseconds. Overall accuracy drift is +/- 70 ppm per degree Celsius. Operating temperature is 0 to 60 degrees Celsius. Storage temperature is -40 to 85 degrees Celsius. Ambient humidity range is 5 to 95 percent non-condensing. Backplane isolation is 500 Volts DC.

Installation & Maintenance Guide

Install the module into a 1746 chassis only. Use shielded communication cable like Belden 8761. Keep cable lengths as short as possible. The removable terminal block makes wiring easy. Select the power supply source with the embedded switch. Internal power uses backplane supply. External power requires 24 Volts DC at 195 mA. Ensure proper grounding for noise immunity. Replace the module without disturbing existing wiring.

Packing List

The package includes one Allen-Bradley 1746-NO4I analog output module. It includes one removable terminal block. Documentation is provided for setup. Shipping is via FedEx, UPS, or DHL.