The Allen-Bradley 1791D-4B4P is a combination I/O module from the CompactBlock I/O 1791D series, featuring 4 sinking inputs and 4 sourcing outputs. As a base module, it can operate independently or in conjunction with expansion input and output modules, providing up to 16 additional inputs or outputs. The module supports 10 to 30 Volts DC of auxiliary power, 11 to 30 Volts DC of DeviceNet power, and provides 500 Volts AC isolation for the power supply to DeviceNet, I/O group to group, and I/O group to I/O group connections. In North America, Europe, and Asia, the 1791D-4B4P may possibly enhance I/O module performance and could potentially be deployed across the globe, making it a key component for professional industrial automation and DeviceNet connectivity.
