The 2TLA010029R0000 is a safety relay from ABB’s RT9 / “RT9 24DC” series. It is designed to monitor safety devices (such as emergency‑stop buttons, safety mats/edges, light curtains, safety‑switches, interlocks, gates/doors, enabling devices, foot‑pedals, contact strips, etc.) and to provide safety‑rated outputs for reliable machine or system safety. The relay supports both single‑channel and dual‑channel input wiring, making it flexible for different safety circuit designs. It offers selectable manual‑reset or automatic‑reset modes, and includes a “test/reset” or supervision input to verify that external contactors or safety outputs are correctly de‑energized before allowing a restart. The unit is compact, DIN‑rail mountable, and provides LED status indication and a dedicated information output for system monitoring.
