Allen-Bradley 1761-NET-AIC MicroLogix Advanced Interface Converter

Product Description

The 1761-NET-AIC is an AIC+ Advanced Interface Converter designed for the Allen-Bradley MicroLogix communication ecosystem. It is used to bridge and isolate serial communication networks, enabling reliable data exchange across DH-485 and DF1 protocols in multidrop configurations.

This device supports up to 32 nodes on a DH-485 network, making it suitable for small to medium distributed control systems. It provides electrical isolation between communication channels, improving signal integrity and protecting connected controllers from electrical noise and ground loops.

The 1761-NET-AIC operates from a 24V DC power supply and integrates multiple serial interfaces for flexible network connectivity, including RS-232 and DH-485 communication paths. Its compact design allows easy installation in industrial enclosures with DIN rail mounting.

Key Technical Specifications

Communication Interfaces

• Protocol Support: DH-485, DF1

• Ports:

• 2 × RS-232 serial ports

• 1 × DH-485 port

• Multidrop Network Support: Yes

• Maximum Nodes: up to 32 DH-485 devices

Electrical Characteristics

• Input Voltage Range: 20.4–28.8V DC

• Typical Current Draw: up to 120 mA @ 24V DC

• Maximum Inrush Current: 200 mA

• Internal Isolation: 500V DC tested (60 seconds)

Performance & Protection

• Signal Isolation: RS-232 to RS-485 conversion isolation

• Noise Immunity: enhanced industrial-grade filtering

• Communication Stability: optimized for multidrop serial networks

Environmental Ratings

• Operating Temperature: 0°C to +60°C

• Storage Temperature: -40°C to +85°C

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

• Vibration Resistance: 5 g (10–500 Hz)

• Shock Resistance: 30 g operating / 50 g non-operating

Mechanical Data

• Mounting Type: DIN rail or panel mount

• Weight: 0.4 lbs

• Compact interface module design for cabinet integration

Certifications & Compliance

• UL Listed for Class I Division 2 hazardous locations

• Suitable for Groups A, B, C, D environments

Functional Features

• Serial network bridging for MicroLogix systems

• Supports multidrop DH-485 architecture

• Electrical isolation between communication domains

• Dual RS-232 interface for flexible connectivity

Applications

• MicroLogix PLC communication networks

• Legacy DH-485 system integration

• Serial device networking in control cabinets

• Retrofit communication expansion projects

FAQ

Q: How many devices can be connected on a DH-485 network using this module?
A: Up to 32 nodes are supported in a multidrop configuration.

Q: Does it provide electrical isolation?
A: Yes, it includes 500V DC isolation to protect communication lines and connected equipment.

Q: Can it be used with DF1 communication?
A: Yes, it supports DF1 protocol alongside DH-485 for flexible serial communication.