Safety relay with integrated delay and logic
The Omron G9SX-ADA222-T150-RT DC24 is a general-purpose safety relay from the G9SX series, rated Safety Category 4, PLe, and SIL3 — the highest performance level for safety functions up to a risk-reduction factor of 1000 or more. It accepts two digital inputs and drives six solid-state safety outputs plus two solid-state auxiliary outputs, all on a 24 VDC supply.
Category 4 / PLe / SIL3 means the relay is designed for redundant, monitored safety circuits where a single fault cannot cause loss of the safety function — think two-hand controls, light curtains, or e-stop chains on high-risk machinery. The built-in delay timer (0 to 150 seconds) is adjustable and can be used for delayed restart or muting sequences — set it via the front-panel potentiometer, no separate timer module needed. The Logical AND I/O feature lets you cascade multiple G9SX units so that all inputs must be satisfied before outputs turn on, which simplifies wiring on multi-zone safety systems.
All terminations are screw terminals — strip length 7-8 mm, torque to 0.5-0.6 Nm. The 24 VDC supply must be SELV/PELV; the relay draws approximately 0.2 A from the supply (no-load). Approvals include CE, CSA, cULus, SUD, TUV, and UL — covers most North American and European machinery directives.