Overview
The Allen-Bradley 1747-AIC is an isolated link coupler designed for SLC 500 family programmable controllers. The isolated link coupler (1747-AIC) is used to connect SLC 500 family devices to the DH-485 network. This Series B module is essential for distributed control architectures requiring multiple nodes on a DH-485 communications link, enabling seamless integration between processors and peripheral devices across industrial automation systems.
Key Features
- SLC 500 Isolated Link Coupler for panel-mounted installation, compatible with SLC Fixed and modular style hardware
- Shielded twisted-pair communication interface enabling communication between SLC processors (SLC 5/01, 5/02, 5/03) and the DH-485 link
- 6-position removable terminal block for connection to DH-485 communication cable
- Maximum network cable length of 1219 m (4000 ft) total distance from first to last node
- Series A and Series B models feature identical internal circuitry for drop-in compatibility
Technical Specifications
- Input Power: 24 VDC from SLC 500 backplane or external supply
- Backplane Current Draw: 0 mA at 5V; 85 mA at 24V
- Current Load: 0.085 Amps at 24 VDC
- Thermal Dissipation: 2 W (min/max)
- Operating Temperature: 0 to 60 °C
- Storage Temperature: –20 to 70 °C
- Relative Humidity: 5 to 95% (non-condensing)
- Dimensions: 1.5 × 6.8 × 6.5 inches
- Communication Protocol: DH-485 (RS-485)
- Terminal Block: 6-position removable
- Certifications: NEMA ICS 2-230, IEC 1000-4-2, IEC 1000-4-3, EN 50081-2 Class A, CSA
- Mounting: Panel-mount (requires DIN rail or direct panel installation)
Typical Applications
- Multi-node SLC 500 controller networks requiring isolated communication
- Distributed control systems connecting programmable controllers across extended distances
- Integration of SLC 500 processors with peripheral devices (PIC, DTAM) via DH-485
- Industrial automation facilities requiring robust, isolated network communication
- Legacy PLC system upgrades and network expansions
Compatibility & Replacements
Compatible With
- SLC 5/01, SLC 5/02, and SLC 5/03 processors
- SLC 500 Fixed and Modular controllers
- DH-485 network architecture
- 1747-PIC (Personal Interface Converter)
- 1747-DTAM-E (Data Table Access Module)
- Compatible with shielded twisted-pair cables (Belden #3106, #9842)
Replaces / Drop-In Replacement For
- Series A 1747-AIC (same internal circuitry as Series B)
- 1747-AIC Series A models for backward compatibility
Works With
- DH-485 communication protocol
- RSLogix 500 programming software
- SLC 500 programming and configuration tools
- Shielded twisted-pair communication cables for extended network runs
