DESCRIZIONE PRODOTTO
SIEMENS 3SK2112-2AA10 - Safety Relay
This device is a compact, basic unit within the SIEMENS SIRIUS 3SK2 safety relay series, engineered for monitoring safety functions in industrial automation systems. It integrates two normally open enabling circuits and one normally closed auxiliary output, providing reliable safety interlocking and emergency stop functionalities. The unit operates on a 24V DC supply and features screw terminals for secure electrical connections, suitable for applications requiring up to SIL 3 or PLe safety levels.
Technical Specifications:
- SERIES/FAMILY: SIRIUS 3SK2
- COMPONENT TYPE: Safety Relay, Basic Unit
- ELECTRICAL SPECS:
- NOMINAL SUPPLY VOLTAGE: 24V DC
- OPERATING VOLTAGE RANGE: 19.2V DC to 28.8V DC
- POWER CONSUMPTION: 2.5W (typical)
- NUMBER OF SAFETY OUTPUTS: 2 (Normally Open, instantaneous)
- NUMBER OF AUXILIARY OUTPUTS: 1 (Normally Closed, instantaneous)
- RATED OPERATIONAL CURRENT (SAFETY OUTPUTS): 5A at 230VAC (AC-15), 3A at 24VDC (DC-13)
- RATED OPERATIONAL CURRENT (AUXILIARY OUTPUT): 5A at 230VAC (AC-15), 3A at 24VDC (DC-13)
- MECHANICAL/PHYSICAL:
- FORM FACTOR: Compact DIN rail mountable module
- TERMINAL TYPE: Screw terminals
- WIDTH: 22.5 mm
- INTERFACE/CONTROL:
- INPUTS: Single-channel or two-channel sensor inputs (e.g., E-STOP buttons, safety gates, light curtains)
- OUTPUTS: 2 safety-related NO outputs, 1 auxiliary NC output
- DIAGNOSTICS: LED indicators for status and fault conditions
- ENVIRONMENTAL/MOUNTING:
- IP RATING: IP20 (terminal area), IP40 (enclosure)
- OPERATING TEMPERATURE: -25 °C to +60 °C
- MOUNTING STYLE: DIN rail mounting (35 mm)
- COOLING METHOD: Natural convection
- COMPATIBILITY/APPLICATION:
- SAFETY STANDARDS: Up to SIL 3 (IEC 61508), PLe (ISO 13849-1), Category 4 (ISO 13849-1)
- TARGET APPLICATIONS: Emergency stop circuits, safety gate monitoring, light curtain monitoring, two-hand control, press control, general machine safety functions in manufacturing, robotics, and material handling.
