1761-NET-AIC | Allen-Bradley | AIC+ Advanced Interface Converter DH-485

Overview

The 1761-NET-AIC is an AIC+ Advanced Interface Converter developed by Allen-Bradley for seamless communication between controllers, operator interfaces, and other DH-485 network devices. It acts as a signal isolation and protocol conversion module, providing reliable and noise-resistant data exchange across industrial networks. The unit supports multiple serial connections and features rugged construction designed to operate in demanding environments.

Key Features

• Model Number: 1761-NET-AIC

• Manufacturer: Allen-Bradley (Rockwell Automation)

• Product Type: AIC+ Advanced Interface Converter

• Communication Interfaces:

• 2 × RS-232 ports

• 1 × DH-485 port (DH-485 protocol supported on all ports)

• Network Function: Enables multi-point DH-485 networking between PLCs, PanelView HMIs, and PCs

• Isolation Voltage: 500 V DC for 60 seconds (port-to-port isolation)

• Power Supply Voltage Range: 20.4–28.8 V DC

• Current Consumption: 120 mA at 24 V DC

• Inrush Current: 200 mA maximum @ 24 V DC

• Signal Transmission: Fully isolated and optically protected communication channels

Environmental Specifications

• Operating Temperature: 0°C to 60°C (32°F to 140°F)

• Storage Temperature: -40°C to 85°C (-40°F to 185°F)

• Relative Humidity: 5% to 95% non-condensing

• Vibration Resistance: 10–500 Hz, 5 g, 0.030 in. peak-to-peak, 2 hours per axis

• Operating Shock: 30 g, ±3 shocks per axis

• Non-Operating Shock: 50 g, ±3 shocks per axis

Performance and Design

• Protocol Support: DH-485 on all communication channels for robust multi-device integration

• Isolation: High-voltage isolation between serial and DH-485 networks enhances noise immunity

• Installation: DIN-rail or panel-mounted for flexibility in industrial enclosures

• Power Protection: Built-in surge and transient suppression

• Diagnostics: LED indicators for communication and power status

Applications

The 1761-NET-AIC converter is widely used in:

• Linking MicroLogix, SLC 500, and PLC-5 controllers to DH-485 networks

• Connecting PanelView terminals and programming computers for data transfer

• Providing galvanic isolation between PLC serial ports and industrial networks

• Establishing communication bridges in distributed automation systems

FAQ

• Q1: Which Allen-Bradley controllers are compatible with the 1761-NET-AIC?
  A1: It is compatible with MicroLogix, SLC 500, and PLC-5 controllers that support DH-485 communication.

• Q2: What type of power source is required?
  A2: The module operates on 20.4–28.8 V DC, typically supplied from a PLC or external power adapter.

• Q3: Does it provide electrical isolation?
  A3: Yes, the unit is isolated and tested at 500 V DC to prevent cross-port electrical interference.

• Q4: How many devices can be networked using this converter?
  A4: Up to 32 DH-485 devices can be connected in a single network.