1771-IG Allen-Bradley Allen-Bradley

Allen-Bradley 1771-IG Overview The Allen-Bradley 1771-IG is an 8-point isolated digital input module designed for use in PLC-5 systems with the 1771 I/O chassis . It accepts 24V DC sinking (current sourcing) inputs , offering isolation per point , which ensures electrical separation between field devices and backplane circuitry. This module is ideal for industrial applications requiring precise and reliable digital signal monitoring. Key Features Input Points: 8 isolated inputs Voltage Rating: 24V DC nominal Input Type: Sinking (accepts sourcing input devices) Isolation: Point-to-point and from backplane Chassis Compatibility: Allen-Bradley 1771 Mounting: Chassis-based module Field Wiring: Removable terminal block (RTB) required LED Indicators: Status for each input channel Technical Specifications Catalog Number: 1771-IG Input Voltage Range: 15–30V DC Nominal Voltage: 24V DC Current per Input: Typically 8 mA Signal Delay (on/off): ~10 ms Backplane Current Draw: Approx. 120 mA at 5V DC Operating Temperature: 0°C to 60°C Certifications: UL, CSA, CE Compatible PLCs: PLC-5 series processors with 1771 chassis Applications Machine status monitoring Switch and push-button interfaces Industrial signal acquisition Discrete input integration for PLC-5 systems Systems requiring isolated DC digital inputs Why Choose the 1771-IG Electrical Isolation: Prevents cross-channel interference Compact Design: Fits standard 1771 chassis Reliable Performance: Designed for harsh industrial conditions Direct Integration: Seamless with legacy PLC-5 control systems Clear Diagnostics: LED indicators for easy troubleshooting Order Now The Allen-Bradley 1771-IG digital input module is available and ships worldwide.