The B&R Automation DI Digital Input PLC Modules series is a group of 24 VDC digital interface modules for PLC systems that provide electrically isolated field signal processing in a compact plug-in format.
The series includes modules with 16 digital inputs using optocoupler isolation, nominal 24 VDC input operation, switching thresholds suited to standard industrial control voltage ranges, and input delay versions of approximately 1 ms or 5 ms. The module also includes 16 transistor outputs rated for 24 VDC switching, with up to 0.5 A per output and 8 A total output current, along with integrated short-circuit and overvoltage protection. Status indication is handled by 16 LEDs that can be switched to display either input or output states, and the design uses a 37-pin D-type connection with the input reference potentials connected on the module. Overall, the series is intended for PLC applications that require multi-channel 24 VDC digital signal interfacing with galvanic isolation, protected outputs, and compact modular installation.
