3IF782.9 B & R Automation
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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.
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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.
Frequently Asked Questions about 3IF782.9:
Q: What form factor does the 3IF782.9 use for installation?
A: The 3IF782.9 interface card features a compact aPCI form factor designed for integration into System 2005 Controllers.
Q: What type and speed is the IF1 interface on the 3IF782.9?
A: This model's IF1 interface uses an RS485 connection with a maximum transfer rate of 115.2 kbit/s.
Q: What connector and transfer rate are provided for IF2 on the 3IF782.9?
A: The IF2 connector is a shielded RJ45 port compatible with 100BASE-T Ethernet at a transfer rate of 100 Mbit/s.
Q: What is the maximum line length for the IF2 Ethernet POWERLINK port on the 3IF782.9?
A: The IF2 Ethernet POWERLINK interface can support cable runs up to 100 meters in length.
Q: What level of ingress protection does the 3IF782.9 provide?
A: The 3IF782.9 is rated at IP20 ingress protection, offering basic protection against solid objects.
