The 3SK2122-1AA10 Siemens SIRIUS safety relay is a configurable safety logic basic unit designed for high-integrity machine safety applications. It functions as a centralized evaluation module for multiple safety circuits, enabling deterministic shutdown and controlled restart logic within industrial automation systems.
| Electrical & System Characteristics | |
| Supply voltage: | 24 V DC |
| Compact width: | 45 mm modular housing |
| Safety Performance & Compliance Level | |
| Safety Integrity Level: | up to SIL 3 (IEC 62061) |
| Performance Level: | up to PL e (ISO 13849-1) |
| Pollution degree: | 3 (industrial environment suitability) |
Frequently Asked Questions About 3SK2122-1AA10
The 3SK2122-1AA10 Siemens safety relay basic unit performs deterministic safety logic processing through configurable internal function blocks, enabling structured evaluation of safety input channels and execution of fail-safe output transitions compliant with SIL 3 and PL e requirements.
The 3SK2122-1AA10 Siemens safety relay basic unit utilizes software-driven parameterization via SIRIUS Safety ES, allowing modular composition of logic elements such as AND/OR gates, cross-circuit detection, and monitored start conditions for customizable safety architectures.
The 3SK2122-1AA10 Siemens SIRIUS safety relay basic unit implements dual-channel input evaluation with cross-monitoring mechanisms, ensuring that discrepancies between redundant safety circuits are detected and immediately transitioned into a safe shutdown state.
The 3SK2122-1AA10 Siemens safety relay basic unit incorporates monitored restart logic that prevents automatic re-energization, requiring explicit reset validation through controlled manual or system-authorized restart sequences.
The 3SK2122-1AA10 Siemens safety relay basic unit supports integration with emergency stop switches, safety interlock gates, light curtains, two-hand control panels, and pressure-sensitive safety mats, enabling multi-layered hazard detection architectures.
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