siemens
Siemens SIRIUS 3SK2 Programmable Safety Controller
Model: 3SK2112-1AA10
4-hour response · Pricing in SAR · Delivery across all KSA regions
3SK2112-1AA10 — Siemens SIRIUS 3SK2 Programmable Safety Controller
The Siemens SIRIUS 3SK2 is a programmable safety relay controller that consolidates multiple safety functions — emergency stop, guard door interlocking, two-hand control, ESPE (electro-sensitive protective equipment) muting, and enabling switch — into a single DIN-rail device rated up to SIL 3 / PLe. The 3SK2 replaces the conventional approach of multiple individual-function 3SK1 safety relays with a single programmable unit, reducing panel space, component count, and wiring complexity while providing a graphical programming interface via the SIRIUS Safety Parameter Software (SPS) and a USB connection from a laptop — no specialised programming device required.
The 3SK2 base unit provides up to 8 safety inputs (for E-stop, gate switches, light curtain OSSDs, or two-hand controls) and 4 safety outputs (OSSD-equivalent solid-state outputs) rated at 2 A each, with the ability to add expansion modules for additional safety outputs. The programming interface presents pre-tested safety function templates for the most common machinery safety applications — EN ISO 13849-1 Category 3 and Category 4 architectures for each function type are selectable graphically, with the tool automatically calculating the resulting PL and SIL from the selected architecture and sensor/actuator component parameters. This guided approach dramatically reduces safety function engineering time and eliminates the manual PL calculation risk for Saudi machine builders unfamiliar with EN ISO 13849-1 methodology.
In Saudi Arabia, the SIRIUS 3SK2 KSA is specified for multi-function machine safety panels at automotive assembly, food processing, and packaging machinery plants where the machine has multiple guard zones, E-stop zones, and a two-hand control station requiring coordinated, hierarchical safety functions. The 3SK2's muting function for light curtains at conveyor entry and exit openings — where pallet entry is permitted while personnel access is blocked — is particularly valued in Saudi food and beverage facilities where automated pallet infeed requires light curtain bypass during active conveyor cycles. SABIC and IKTVA-approved system integrators build 3SK2-based safety control systems for machine tools and manufacturing equipment at Vision 2030 manufacturing facilities.
Razz Middle East supplies SIRIUS 3SK2 controllers with SIRIUS Safety Parameter Software licences, providing complete machine safety panel design, SIL/PL verification calculations, and TÜV-compliant safety documentation packages.
Technical Specifications
Full specifications for the 3SK2112-1AA10
- Safety Level
- SIL 3 (IEC 61508) / PLe, Category 4 (ISO 13849)
- Safety Inputs
- Up to 8 (2-channel E-stop, gate, ESPE, two-hand)
- Safety Outputs
- 4 OSSD-equivalent solid-state (2 A each)
- Functions
- E-stop, guard, two-hand, ESPE, muting, enabling
- Expansion
- Output expansion modules
- Programming
- SIRIUS Safety Parameter Software (SPS) via USB
- PL Calculation
- Automatic from architecture selection
- Mounting
- DIN rail 35 mm
- Compliance
- IEC 61508, EN ISO 13849-1, CE Machinery Directive
Key Features & Benefits
- Single programmable device replaces multiple individual-function 3SK1 safety relays, reducing panel components and wiring by up to 60% for machines with 3 or more safety functions in a coordinated safety circuit.
- Graphical SIRIUS Safety Parameter Software (SPS) with pre-tested safety function templates enables non-specialist engineers to configure SIL 3 / PLe safety functions with automatic PL calculation, reducing safety function engineering time.
- Muting function for ESPE light curtains allows automatic pallet entry through a guarded opening while blocking personnel access during the mute period — required for automated infeed conveyors at Saudi food and beverage facilities.
- Two-hand control function monitors simultaneous actuation of both hands within 0.5 s, providing the operator safety protection required by EN 574 for manually-fed pressing and stamping machines at Saudi metalworking facilities.
- Enabling switch input integration allows the 3SK2 to implement the enabling function required for robot teaching and manual machine adjustment operations in Saudi automotive and aerospace manufacturing facilities.
- Automatic PL/SIL calculation from selected architecture and component parameters eliminates manual EN ISO 13849-1 spreadsheet calculations, reducing safety validation documentation preparation time for CE marking.
- USB programming via standard laptop without specialised programmer hardware allows Saudi field engineers to modify safety parameters on-site during machine commissioning or safety function upgrades without shipping specialist equipment.
Industrial Applications in Saudi Arabia
- Multi-zone robot cell safety control at automotive assembly facilities in Saudi Arabia, where 3SK2 coordinates guard door interlocks at multiple access points with E-stop zones and a centralised enabling switch for teaching mode access.
- Packaging machine multi-function safety panel at Saudi food manufacturers, where 3SK2 implements E-stop, infeed light curtain muting, discharge guard door interlock, and two-hand control for manual feeding stations in one device.
- Metal stamping press guard and two-hand control integration at Saudi metalworking and fabrication facilities, where the 3SK2's EN 574-compliant two-hand control function protects operators at manually-fed press tools.
- Conveyor system safety zone control at automated distribution and logistics facilities, where 3SK2 manages multiple conveyor access hatches and emergency stop pull-wire switches across long conveyor sections.
- CNC machining centre door lock and spindle interlock at precision manufacturing facilities, where solenoid locking outputs from the 3SK2 prevent guard door opening during spindle rotation and part probing cycles.
- Pharmaceutical filling line safety integration at Saudi pharmaceutical manufacturers, where the 3SK2 coordinates light curtain muting during automated vial infeed with E-stop and guard monitoring for maintenance access.
- SABIC and Aramco process plant maintenance safety interlock panels, where the 3SK2's SIL 3 capability provides the safety logic for valve position permissives and personnel access interlocks at high-hazard process areas.
Industrial Supplier in Saudi Arabia
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