Allen-Bradley 1747-AIC Analog Input Module

Allen-Bradley 1747-AIC is an isolated DH-485 link coupler for SLC 500 systems, enabling DH-485 devices to communicate with a SLC 500 processor while providing galvanic isolation to reduce noise and ground-loop issues on the field network. It is powered from a 24 V DC supply and draws about 85 mA, with an isolation rating of up to 1500 V DC between the DH-485 network and the processor side. The unit typically ships with a 1747-C11 cable (12 inches / 304.8 mm) to connect the bus, aligning with AB documentation that the cable is supplied with the link coupler. In practical use, the 1747-AIC supports DH-485 communications for multi-device configurations, making it suitable for remote I/O setups and PLC-to- PLC link scenarios where network isolation enhances reliability and noise immunity.