Allen-Bradley 1734-OB8S Digital DC Output Module

The Allen-Bradley 1734-OB8S is an eight-channel safety digital DC output module for the POINT I/O family, designed to drive safety devices within a Guard I/O network. It provides eight 24 V DC sourcing outputs for safety relays, interlocks, and other field devices, powered from a field power bus with an operating voltage range of 19.2 to 28.8 V DC. The module is IP20-rated and mounts on standard POINT I/O bases—1734-TB or 1734-TBS (8-terminal) base assemblies, with compatibility noted for 1734-TB3/-TB3S bases in broader configurations. As a safety digital output, the OB8S supports safety-related control in compact distributed architectures, making it suitable for applications such as emergency-stop circuits, guarded access devices, and other safety interlocks. Typical installations place the OB8S in remote I/O instances within a factory automation cell, where eight independent 24 V DC outputs are required to reliably actuate safety devices while coordinating with the POINT I/O controller and bus communications. This variant belongs to the POINT Guard I/O lineup, representing the safety-enhanced counterpart to the standard 1734-OB8 family and enabling risk-reduction compliance in suitable integrated control systems.