Overview
The Allen-Bradley 1761-NET-AIC is a communication adapter designed for industrial automation systems using MicroLogix and SLC controllers. This Advanced Interface Converter (AIC+) provides network bridging and electrical isolation between DF1 serial devices and DH-485 multidrop networks. The Series B unit facilitates secure, reliable data exchange in legacy and modern control architectures.
Key Features
- Dual RS-232 Ports — 9-pin DB-9 and 8-pin mini-DIN connectors for flexible point-to-point and isolator configurations
- RS-485 DH-485 Interface — Supports up to 32 nodes per multidrop network with standard Data Highway 485 protocol
- 500V DC Internal Isolation — Electrical isolation ensures signal integrity and protection in harsh industrial environments
- Flexible Power Options — 24V DC external supply or cable-derived power with selector switch
- Wide Operating Range — Operates 0–60 °C; stores safely at −40–85 °C for diverse deployment scenarios
- Compact Industrial Design — Rated for Class I Division 2 hazardous locations with CE, CSA, and GOST certifications
Technical Specifications
- Input Voltage: 20.4–28.8 V DC (nominal 24 V DC)
- Operating Current: 0–120 mA typical at 24 V DC
- Inrush Current: 200 mA maximum
- Isolation Voltage: 500 V DC (1 minute)
- Communication Ports: RS-232 (2×) + RS-485 DH-485 (1×)
- Network Capacity: 32 nodes maximum per DH-485 multidrop
- Network Length: 1219 m (4000 ft) maximum per multidrop segment
- Operating Temperature: 0–60 °C (32–140 °F)
- Storage Temperature: −40–85 °C (−40–185 °F)
- Humidity: 5–95% noncondensing
- Weight: 0.40 lbs (181 g)
- Certifications: CE, CSA, C-TICK, GOST, KC, MARINE
Typical Applications
The 1761-NET-AIC is widely used in:
- Legacy MicroLogix 1000, 1200, and 1500 system upgrades and expansions
- SLC 5/01, 5/02, and 5/03 multi-controller DH-485 networks
- Serial-to-Ethernet bridging for plant floor device communication
- PanelView and operator interface integration via dual RS-232 ports
- Point-to-point and half-duplex ASCII isolator applications
- Class I Division 2 hazardous location industrial control systems
Compatibility & Replacements
Compatible With
- MicroLogix 1000, 1200, and 1500 controllers
- SLC 5/01, 5/02, and 5/03 processors
- PanelView 300, 600, and 900 operator terminals
- Allen-Bradley DH-485 multidrop networks (up to 32 nodes)
- DF1 and DH+ communication protocols
- RS-232 and RS-485 serial devices and peripherals
Replaces / Drop-In Replacement For
- Allen-Bradley 1761-NET-AIC Series A (earlier generation with same pinouts)
- Legacy point-to-point DF1 interface modules in MicroLogix systems
Works With
- Programming Environments: RSLogix 500, RSLogix Micro, Studio 5000
- Communication Protocols: DF1 (full- and half-duplex), DH-485, DH+
- Connection Standards: RS-232 (serial), RS-485 (multidrop), DB-9 and mini-DIN connectors
- Cable Types: 1761-CBL-PM02 (2 m), 1747-CP3 (3 m), and compatible serial communication cables
- Accessories: 1747-UIC USB-to-DH-485 converter for PC programming and diagnostics
