7AC911.9 B & R Automation
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The B & R Automation 7AC911.9 is a CAN interface bus connector from the 7AC Bus Connectors series. It features a 2-bus line count, 9 pins with DSUB shell format, and includes an integrated 120 Ohm terminator with on/off control. The connector has a female contact, uses screw clamp terminal blocks, and includes integrated strain relief.
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Product Description:
B&R Automation's 7AC911.9 bus connector belongs to the 7AC Bus Connectors series and acts as a passive branch element for CAN-based control architectures. The part is a compact field-wiring accessory that links one additional device into the trunk line without interrupting communication. Within automated machinery, this component simplifies panel layout by combining signal distribution and termination in a single shell, which reduces wiring complexity and shortens assembly time.
The connector carries 2 independent bus lines on the embedded PCB, so node tapping and pass-through are separated for clearer diagnostics. A total of 9 conductors are present at the interface, which matches the full CANopen pin map and leaves a reserved position for future extensions. The physical layer is classified as CAN, allowing direct attachment to controllers that use 1 Mbit/s signaling. Its shell uses DSUB geometry, giving the connector a familiar footprint for panel cutouts. Because the part is a T-connector, trunk wiring can remain continuous while the lateral branch feeds the local device. An internal termination network of 120 Ω is switch-selectable, which helps maintain proper line impedance at segment ends.
Terminator selection is managed with an On/Off slide, so the same article can serve as a mid-line tap or as the last station in the segment. Strain on the cable jacket is limited by an integrated clamp molded into the housing, which helps protect the conductor connection during vibration. The contact side is female, which helps prevent accidental shorting when the stub is unplugged. Screw-clamp terminal blocks accept field wiring quickly and secure it against shock, while the labeled pin legend of 2 = CAN_L, 3 = CAN_GND, and 7 = CAN_H supports consistent color coding. With the terminator already built in, the connector does not require a separate external resistor at the end of the segment.
Frequently Asked Questions about 7AC911.9:
Q: How many bus lines does the 7AC911.9 connector support?
A: The 7AC911.9 includes 2 bus lines for CAN communication.
Q: What type of connector and pin count does the 7AC911.9 have?
A: This model provides a female DSUB form factor with 9 pins.
Q: Does the 7AC911.9 offer built-in termination, and what is its value?
A: The 7AC911.9 features an integrated 120 Ω terminator that can be switched on or off.
Q: What terminal style is used on the 7AC911.9 bus connector?
A: A screw clamp terminal block style is used for wiring convenience on the 7AC911.9.
Q: Does the 7AC911.9 connector include strain relief?
A: Strain relief is built-in to the 7AC911.9, protecting connections from stress or pull.
