7XX408.50-1 B & R Automation
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The B & R Automation 7XX408.50-1 Bus Controller is part of the 7XX Bus Controllers series and operates with a nominal supply voltage of 24 VDC, consuming up to 2 watts. It provides 16 digital inputs, 16 outputs, two PWM outputs, and two event counters. The unit features output protection against short circuit and overload, with a total output current of 10 amps and an interface of 1 x X2X Link slave.
Internal Product Review
The 7XX408.50-1 is a B&R Automation bus controller with 16 inputs, 16 outputs and a 1 x X2X Link slave interface. Short-circuit and overload protection paired with 10.0 A total output current gives the output stage strong practical utility in machine control. Max. 100 kHz counter input frequency and max. 30 kHz encoder input frequency make the module a capable choice for fast signal handling.
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Product Description:
The 7XX408.50-1 bus controller is produced by B&R Automation as part of the 7XX Bus Controllers series. The unit consolidates digital I/O, high-speed counting, and network interfacing into one DIN-rail module so that a central PLC can monitor sensors and command actuators through the X2X link. By converting 24 V field signals into deterministic network data, the controller streamlines machine wiring and supports coordinated motion and process sequencing in industrial automation lines. This layout also reduces the need for separate interface modules when standard switching tasks and networked control must be handled in the same cabinet.
The controller operates from a nominal supply of 24 VDC. Its 16 inputs and 16 outputs can each be wired as sink or source circuits, with switching recognized below 5 V and asserted above 15 V. Two hardware event counters accept pulse streams at up to 100 kHz, while an encoder channel is rated for 30 kHz, enabling length measurement, registration tasks, and position capture. The aluminum housing measures 80 × 170 × 30 mm, so the module fits compact control panels while still providing a single X2X Link slave interface for deterministic network updates. This combination lets one controller manage both general-purpose field signals and pulse-based devices without requiring an additional counter module.
For output duties, the unit can source up to 10.0 A in total, divided across 12 × 0.5 A and 4 × 2 A. Each channel is guarded by short-circuit and overload protection to help prevent damage if loads are miswired. Two PWM outputs allow proportional valve or speed control, and the same hardware can feed pulse trains to the event counters when required. Internal electronics dissipate only 2 W, so extra thermal management is usually minimal. When mounted on the X2X bus, the slave refreshes data every 200 µs or more, which supports fast updates for motion axes and other time-sensitive machine functions.
