Excellent PLC
Product Introduction
The Allen-Bradley 1771-IVN/C Low True Input Module is a digital input module designed for PLC-5 control systems, providing reliable signal acquisition from field devices operating with DC voltage levels. It is configured for low-true (sink) input logic, making it suitable for systems where input devices source current to the module.
This module supports 32 digital inputs organized into four groups of eight channels, enabling efficient monitoring of multiple field signals such as push buttons, limit switches, proximity sensors, and other discrete devices. Its group-based design simplifies wiring and enhances troubleshooting in complex industrial systems.
Built for integration within the 1771 I/O platform, the module ensures stable operation in harsh industrial environments, including areas with vibration and electrical noise. It is commonly used in automation systems requiring dependable and high-density digital input processing.
Product Specifications
| Parameter | Value |
|---|---|
| Product Type | Digital Input Module |
| Series | 1771 I/O |
| Model Number | 1771-IVN/C |
| Number of Inputs | 32 (4 groups of 8) |
| Input Type | Low-True (Sink) |
| Input Signal | 10–30 V DC digital input |
| Operating Voltage | 10–30 V DC |
| Logic Configuration | Source input devices (sink module) |
| Wiring Arm | 1771-WN |
| Series Version | Series C |
| Isolation | Group isolation |
| Mounting Type | Rack-mounted (1771 chassis) |
| Application Area | Industrial automation systems |
| Environmental Resistance | Resistant to vibration and EMI |
| Dimensions | 165 x 51 x 89 mm |
| Weight | 0.45 kg |
Applications
• Machine control systems
Monitors signals from push buttons, switches, and sensors for real-time control decisions.
• Process automation
Collects input signals from field instruments and discrete devices in industrial processes.
• Material handling systems
Detects status of conveyors, position sensors, and limit switches.
• Packaging and assembly lines
Provides input monitoring for synchronized automation and safety logic.
• General PLC-based monitoring
Suitable for applications requiring high-density digital input acquisition.
Advantages
• High input density
Supports 32 inputs in one module, improving system efficiency and space utilization.
• Low-true (sink) input configuration
Compatible with field devices that source current to the module.
• Grouped channel design
Simplifies wiring and enhances fault isolation and maintenance.
• Reliable industrial performance
Designed for stable operation in noisy and vibration-prone environments.
• Seamless PLC-5 integration
Fully compatible with Allen-Bradley 1771 I/O systems.
• Flexible installation
Works with standard wiring arm (1771-WN) for easy connection and replacement.
