Why Choose the Pizzato NSD4ST1SMK-F40 Safety Interlock Switch?
The Pizzato NSD4ST1SMK-F40 is a high-reliability RFID safety interlock switch with guard locking designed for industrial machine safety applications requiring secure door monitoring, controlled access, and consistent safety feedback. It is part of the proven Pizzato NS NS-series safety locking switch family, widely used in OEM machinery, robotics, and automated production systems.
This model uses a de-energised solenoid locking mechanism combined with low-level RFID coding (F40), meaning the switch recognises any actuator within the F40 family. This makes it a flexible solution for general machine guarding applications while still supporting compliance with EN ISO 14119 safety standards for interlocking devices.
With its compact reinforced technopolymer housing, industrial sealing, and IP67/IP69K protection rating, the NSD4ST1SMK-F40 is ideal for robotic cells, packaging machinery, conveyors, and OEM equipment where reliable guard locking and interlocking performance are essential in demanding environments.
Key Advantages
- Low-level RFID coding (F40) allows interchangeable actuators within the same family.
- Solenoid guard locking with fail-safe de-energised release principle.
- Dual safety outputs (OS1/OS2) for redundant guard monitoring.
- Integrated diagnostic outputs for actuator and lock status (O3/O4).
- Designed for high safety performance architectures (up to PL e / SIL-rated systems in NS platform designs).
- Suitable for series connection in safety chains for complex automation systems.
Key Features
- Pizzato NS-series safety interlock switch with locking.
- Model: NSD4ST1SMK-F40.
- RFID low coding actuator recognition (F40).
- De-energised solenoid guard locking (fail-safe design).
- M12 industrial connector interface (12-pin typical NS architecture).
- Safety outputs OS1/OS2 with diagnostic signals O3/O4.
- Auxiliary release for maintenance and emergency access.
Reliable Machine Guarding and Safety Control
The Pizzato NSD4ST1SMK-F40 ensures machinery only operates when protective guards are correctly closed and securely locked. When the RFID-coded actuator is engaged and the locking system is active, the safety outputs permit controlled machine operation under safe conditions.
If the guard is opened or the locking condition is removed, the system triggers an immediate safe stop. Continuous monitoring of actuator and lock status ensures reliable integration into PLC-based safety architectures used in modern industrial automation systems.
Typical Applications
- Industrial automation machinery.
- Robotic safety enclosures.
- Packaging and production systems.
- Conveyor and material handling systems.
- OEM machine building applications.
- General machine safety guarding systems.
