Overview
The Allen-Bradley 1762-IA8 is a compact MicroLogix 8-point digital input expansion module designed for MicroLogix 1200 and MicroLogix 1100 controller systems. This 120VAC input module extends I/O capabilities without requiring a separate rack, offering a modular and cost-effective solution for industrial automation applications. The unit operates across a wide voltage range of 79–132 VAC at 47–63 Hz, making it suitable for standard industrial power environments.
Key Features
- Eight discrete digital inputs (Inputs 0–7) with one isolated input group and internally connected commons
- 120VAC rated input with 79–132 VAC operating voltage range
- Fast 20 millisecond On/Off signal response time for responsive control
- Compact, rackless modular design fits seamlessly with other 1762 expansion I/O modules
- DIN rail and panel-mount compatible with two-screw mounting option
- Low power consumption: 50 mA maximum bus current at 5V DC, 2W heat dissipation
- C-UL certified (CSA C22.2 No. 142), UL 508-listed, and CE compliant
Technical Specifications
- Voltage Rating: 120VAC (100–120V standard, 79–132V operating range)
- Input Points: 8 digital inputs
- Response Time: 20 milliseconds maximum
- Inrush Current: 250 mA maximum
- Input Impedance: 12 kΩ @ 50 Hz
- Bus Current: 50 mA maximum at 5V DC (0.25W)
- Heat Dissipation: 2W maximum
- Frequency Range: 47–63 Hz
- Dimensions: 3.5 × 3.4 × 1.5 inches (87 × 86 × 40 mm)
- Weight: 0.24 lbs (0.11 kg)
- Mounting Type: DIN rail, panel mount (screw terminals)
- Operating Temperature: 32–131°F (0–55°C)
- Enclosure Rating: IP20
- Certifications: C-UL (CSA C22.2 No. 142), UL 508-listed, CE, C-Tick
Typical Applications
The 1762-IA8 is commonly used in machine control, process monitoring, safety function applications, and distributed I/O architectures where MicroLogix controllers serve as local control nodes. Typical installations include assembly line status monitoring, equipment interlocking, limit switch sensing, and real-time process feedback in manufacturing environments.
Compatibility & Replacements
Compatible With
- MicroLogix 1200 Programmable Controllers
- MicroLogix 1100 Programmable Controllers
- Bulletin 1762 MicroLogix Expansion I/O platform
- Other 1762 series digital and analog I/O modules
- DIN rail and panel mount installations
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The 1762-IA8 is the standard 8-point 120VAC input module for MicroLogix 1200/1100 systems; confirm your application’s specific requirements with Rockwell Automation documentation or a qualified systems integrator.
Works With
- RSLogix Micro (programming software for MicroLogix controllers)
- Connected Components Workbench (newer CCW software)
- MicroLogix 1200/1100 integrated I/O bus architecture
- Standard screw terminal connections for field wiring
- Both 50 Hz and 60 Hz industrial power systems
