3IF782.9 B & R Automation
Wake Industrial LLC is not an authorized distributor of this product.
The B & R Automation 3IF782.9 is an aPCI form factor interface module in the System 2005 Controllers series. It features a 4-pin male multipoint RS485 connector with a maximum transfer rate of 115.2 kbit/s and a shielded RJ45 port for 100BASE-T Ethernet POWERLINK at up to 100 Mbit/s. The device is rated IP20 for ingress protection and consumes 2.8 watts of power.
Internal Product Review
The 3IF782.9 is a B & R Automation System 2005 controller communication module in an aPCI form factor. A 1x RS485 and 1x Ethernet POWERLINK port configuration gives the module strong flexibility for mixed industrial networks. IP20 protection and IF1-IF2; PLC-IFx isolation support dependable cabinet-level performance.
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Product Description:
The 3IF782.9 communication module is produced by B & R Automation for the System 2005 Controllers series. This plug-in card adds one serial and one deterministic Ethernet channel, enabling the PLC to exchange real-time data with drives, distributed I/O, and supervisory computers in automated production cells. By dedicating protocol handling hardware to the card, the controller can maintain cycle times while extending its communication reach.
The board follows the aPCI form factor, so it occupies one compact slot on the System 2005 backplane and gains direct access to process data. Channel IF1 uses a 4-pin male multipoint connector that carries an RS485 signal set and supports transmission speeds up to 115.2 kbit/s. This rate suits parameterization tools or low-bandwidth drives that share longer multidrop segments. The module’s housing meets the IP20 ingress rating, indicating basic finger protection when installed inside a control cabinet. For high-speed traffic, channel IF2 uses a shielded RJ45 port that complies with the 100BASE-T (ANSI/IEEE 802.3) standard and forms the physical layer for Ethernet POWERLINK. Both ports appear to the PLC as separate logical interfaces, with one RS485 channel and one Ethernet POWERLINK channel.
The POWERLINK stack on IF2 reaches a sustained throughput of 100 Mbit/s, and cabling may extend up to 100 m between active nodes without repeaters. Electrical domains are separated by IF1-IF2; PLC-IFx isolation, which limits ground offsets and protects the CPU from external transients. During typical polling cycles, the card dissipates only 2.8 W, minimizing thermal load inside densely packed cabinets. This arrangement allows the controller to exchange diagnostic data over the serial channel while maintaining deterministic communication with connected Ethernet nodes.
