Why Choose the Pizzato NSL4SE1SMK Safety Interlock Switch?
The Pizzato NSL4SE1SMK is a high-performance RFID safety interlock switch with guard locking designed for advanced machine safety applications in industrial automation. As part of the Pizzato NS-series safety locking switch platform, it provides secure actuator recognition, robust solenoid locking, and reliable safety signal monitoring for protective guarding systems.
This model operates with a de-energised solenoid locking principle and uses high-level RFID coding (F41/F40 family depending on configuration), ensuring strong protection against tampering and guaranteeing that machine guards remain locked during hazardous operation. It is engineered for demanding industrial environments requiring compliance with modern functional safety standards.
With its rugged technopolymer housing, compact design, and industrial-grade protection rating, the NSL4SE1SMK is widely used in robotic cells, packaging machines, conveyors, and OEM automation systems where reliable guard locking and safety interlocking are essential.
Key Advantages
- High-security RFID-coded actuator system (F41 high coding level option) for tamper resistance.
- Solenoid guard locking with fail-safe de-energised release principle.
- Dual safety outputs (OS1/OS2) for redundant monitoring of guard status.
- Diagnostic signalling outputs for actuator insertion and lock status (O3/O4).
- Compliant with EN ISO 14119 machine safety requirements.
- Designed for integration into high-performance safety PLC systems.
Key Features
- Pizzato NS-series safety interlock switch with locking.
- Model: NSL4SE1SMK.
- RFID-coded actuator recognition (F41 coding variant supported in series family).
- De-energised solenoid guard locking (fail-safe design).
- M12 12-pole industrial connector interface.
- Safety outputs OS1/OS2 with diagnostic outputs O3/O4.
- Auxiliary release function for maintenance and emergency access.
Reliable Machine Guarding and Safety Control
The Pizzato NSL4SE1SMK ensures machinery can only operate when protective guards are correctly closed and locked. When the RFID-coded actuator is detected and the locking system is engaged, the safety outputs enable controlled machine operation.
If the guard is opened or the locking condition is removed, the system triggers an immediate safe stop. Integrated diagnostics continuously monitor actuator status and lock condition, supporting integration into PLC-based safety architectures in industrial automation systems.
Typical Applications
- Industrial machine guard locking systems.
- Robotic safety cell enclosures.
- Packaging and production machinery.
- Conveyor and material handling systems.
- OEM machine building applications.
- General industrial automation safety systems.
