Siemens 3SK2122-1AA10 SIRIUS Safety Relay Basic Unit
Siemens 3SK2122-1AA10 SIRIUS safety relay basic unit with 20 F-DI and 4 F-DQ.
The Siemens 3SK2122-1AA10 is a fundamental unit in the SIRIUS 3SK2 safety relay series. It features 20 fail-safe digital inputs (F-DI), 4 fail-safe digital outputs (F-DQ), 2 standard digital outputs (DQ), and operates on a 24 V DC power supply. This unit is parameterizable using the SIRIUS Safety ES software and has a width of 45 mm. It supports up to SIL 3 according to IEC 62061 and Performance Level e according to ISO 13849-1. Connectivity for output expansions (3SK1), coupling relays (3RQ1), and fail-safe motor starters (3RM1) is achieved via a device connector.
This safety relay is crucial for applications requiring robust safety functions, such as emergency stop circuits, light curtains, and two-hand controls in various industrial sectors. It is commonly employed in machine building, automation, and process industries where ensuring personnel safety and operational integrity is paramount.
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| Series | SIRIUS 3SK2 |
| Type | Safety Relay Basic Unit |
| Inputs | 20 F-DI |
| Outputs | 4 F-DQ, 2 DQ |
| Voltage | 24 V DC |
| Width | 45 mm |
| Terminal Type | Screw Terminal |
| Safety Level | SIL 3 (IEC 62061), PL e (ISO 13849-1) |
| Parameterization | SIRIUS Safety ES |