3IF686.9 B & R Automation
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The 3IF686.9 is an interface module from B & R Automation and is part of the System 2005 Controllers series. It features a shielded RJ45 port that supports 100 Base-T Ethernet Standard, with a transfer rate of 100 MBit/s and reaches segment lengths up to 100 meters. The unit is designed for ETHERNET Powerlink fieldbus use, offers IP20 protection, and provides diagnostic LEDs for station and bus monitoring.
Internal Product Review
The 3IF686.9 is a well-designed B & R Automation System 2005 controller interface module for ETHERNET Powerlink networks. 100 Base-T communication and a 100 MBit/s transfer rate support stable, responsive network performance in demanding control applications. IP20 protection and LED/software diagnostics make 3IF686.9 a dependable choice for efficient integration and troubleshooting.
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Product Description:
The 3IF686.9 interface module is produced by B&R Automation as part of the System 2005 Controllers series. Designed for machine-level networks, the module provides a dedicated ETHERNET Powerlink connection so a controller such as a CP260 CPU can exchange real-time data with drives, I/O slices, and supervisory PCs. By fitting into a System 2005 backplane, it extends deterministic Ethernet communication without requiring a separate fieldbus card. This arrangement supports coordinated data exchange across automated equipment where predictable timing is important for control tasks and status reporting.
The communication socket is a shielded RJ45 port that helps reduce electromagnetic interference on the cable pair. Electrical signaling follows the 100 Base-T (ANSI/IEEE 802.3) standard, which supports common twisted-pair network wiring used in industrial cabinets. Because the card offers a single network node, its interface count is 1. Data is carried at a sustained 100 MBit/s transfer rate, providing bandwidth suitable for synchronized control traffic. When unrepeated cabling is used, the maximum segment length is 100 m between nodes, which supports typical cabinet-to-machine routing without additional repeaters.
In plant operation, the module tolerates ambient temperatures from 0 °C to +60 °C, allowing installation in typical control cabinets without additional climate control. The housing carries an IP20 rating, so it is intended for installation inside an enclosure while protecting against accidental finger contact with live parts. Power drawn from the controller backplane is only 1.76 W, which helps limit heat buildup in densely populated racks. Network status can be monitored through station and bus diagnostics through LED indicators and software. The module can also be set to operate as either the managing node or a controlled node while preserving isolation between the PLC and the network interface.
