Allen-Bradley 1746-IV16 SLC 500 Sourcing Discrete Input Module

Product Overview

The 1746-IV16 is a discrete input module from Rockwell Automation. It belongs to the SLC 500 series. This module has sixteen sourcing input channels. It accepts a nominal voltage of 24VDC. The operating voltage range is 10 to 30VDC. Each channel requires 8 mA of input current at 24VDC. The module uses a source wiring configuration. It draws 0.085 A from the backplane. The maximum off-state voltage is 5VDC. The maximum off-state current is 1.0 mA. Signal delay for resistive loads is 0.3 ms on and 0.5 ms off. The module includes 16 LED status indicators. It comes with a removable terminal block for easy wiring.

Application Scenarios

This module interfaces with electrical signaling devices. It works with switches, auxiliary contacts, and sensors. These devices provide binary ON or OFF signals. The module supplies the signal voltage to the loop. It is ideal for devices that do not carry signal voltage. You can use it as local or remote I/O. It integrates into any SLC 500 chassis slot. Common applications include general-purpose DC inputs. It supports connections from up to 8 sensors. The module stores digitally-converted analog data. Processors retrieve this data via the data image table.

Technical Specifications

Manufacturer: Rockwell Automation. Brand: Allen-Bradley. Series: SLC 500. Catalog Number: 1746-IV16. Module Type: Discrete input module. Nominal Input Voltage: 24VDC. Input Voltage Range: 10 to 30 VDC. Wiring Configuration: Source wiring. Backplane Current Consumption: 0.085 A. Signal Delay (Max Resistive Load): On = 0.3 ms; Off = 0.5 ms. Off-State Voltage (Max): 5VDC. Off-State Current (Max): 1.0 mA. Nominal Input Current: 8 mA at 24VDC. Power Dissipation: 3.6 Watts. Module Width: Single slot. Status Indicators: 16 LEDs. Terminal Block: Removable.

Installation & Maintenance Guide

Install the module into any available slot of the 1746 chassis. Ensure the system power is off before installation. Align the module with the chassis backplane connectors. Press firmly until it locks into place. Connect field wiring to the removable terminal block. Use a source wiring configuration for inputs. The module includes filter circuitry and optical coupling. These features reduce signal noise. For replacement, remove the terminal block first. Then slide the module out. You do not need to disconnect wires. This makes module replacement simple. Use LED indicators for troubleshooting. They show the status of each input channel.

Packing List

1 x Allen-Bradley 1746-IV16 Discrete Input Module. 1 x Removable Terminal Block. 1 x Installation Guide. The module is packaged securely. It is ready for shipment via Fedex, UPS, or DHL.