Allen-Bradley 1734-IA4 120V AC Discrete Input Module

Product Overview

The Allen-Bradley 1734-IA4 is a digital input module from the POINT I/O system. It features four non-isolated sinking input channels. These channels accept 120V AC voltage signals. The module requires an external AC power supply. It operates at 85 to 132V AC with 47 to 63 Hz frequency. The 1734-IA4 mounts on terminal bases like 1734-TB, 1734-TBS, 1734-TOP, or 1734-TOPS. Its compact design measures 2.21 x 0.47 x 2.97 inches. The module weighs only 30.9 grams.

Application Scenarios

This module suits distributed I/O applications in industrial automation. Use it to monitor AC voltage signals from sensors and switches. It works well in factory environments with 120V AC control circuits. The sinking input configuration integrates easily with PLC systems. Many users deploy it in manufacturing, packaging, and material handling lines.

Technical Specifications

Nominal input voltage is 120V AC at 60 Hz. On-state voltage ranges from 65 to 132V AC. Off-state voltage is a maximum of 43V AC. Input current is 4.0 to 8.5 mA. The module draws 75 mA at 5V DC from the backplane. Power dissipation is 0.50 W at 132V AC. Thermal dissipation is 3.4 BTU per hour. Isolation voltage is 240V continuous. The 1734-IA4 has a key switch position of eight. It includes LED indicators for module, network, and I/O status.

Installation & Maintenance Guide

Mount the module onto a compatible terminal base. Ensure the base is securely attached to a DIN rail. Connect external AC power supply within 85-132V AC. Do not exceed 132V AC. Wire each input channel according to sink wiring configuration. Check the module status LED after power up. For maintenance, inspect connections regularly. Replace the module if any channel fails. No special tools are required for installation.

Packing List

Each shipment includes one Allen-Bradley 1734-IA4 input module. No terminal base is included. You must order the base separately. The module comes in antistatic packaging. Shipping options are Fedex, UPS, or DHL. All orders are handled with care to ensure safe delivery.