Product Overview

The Allen-Bradley 1771-IC is a digital DC input module from the 1771 series. It works with PLC-5 systems. This module has 8 inputs. It operates at 42 to 56 Volts DC. The module uses input filtering. This filtering limits voltage transients from electrical noise. It also reduces contact bounce effects. This design improves system reliability. It can double or triple product life. The module ships in a static-shield bag. This bag protects against electrostatic discharge.

Application Scenarios

This module works with many devices. Use it with DC proximity switches. It also works with limit switches, float switches, and pushbuttons. Connect photoelectric sensors and selector switches. Use two-wire or three-wire devices. For three-wire devices, the off-state leakage must not exceed 4 mA. The module is ideal for noisy industrial environments. Its input filtering helps reduce downtime. Use it in automation and control systems.

Technical Specifications

The 1771-IC module has a voltage category of 10 to 60 Volts DC. The DC operating voltage range is 42 to 56 Volts. Backplane current draw is 74 mA. Maximum off-state current is 3.7 mA. Typical signal delay on is 15 ms plus or minus 7 ms. Typical signal delay off is 20 ms plus or minus 15 ms. The module uses a 1771-WN wiring arm. Dimensions are 3.5 x 6.5 x 2.0 inches. It has a conformal coating for protection.

Installation & Maintenance Guide

Install the module in a 1771 I/O chassis. Ensure the backplane power is off. Insert the module firmly into the slot. Connect the wiring arm with catalog number 1771-WN. Use proper wiring for your devices. Check the voltage range before powering on. No routine maintenance is needed. Keep the module in its static-shield bag until use. Avoid exposure to moisture and extreme temperatures.

Packing List

One Allen-Bradley 1771-IC digital DC input module. One installation manual (if available). The module ships in a static-shield bag. Shipping is via Fedex, UPS, or DHL.