Why Choose the Pizzato NSD4AZ1SMK Safety Interlock Switch?
The Pizzato NSD4AZ1SMK is a compact and high-reliability RFID safety interlock switch with solenoid guard locking, designed for industrial machine safety applications where secure access control, actuator detection, and reliable safety signalling are required. Manufactured by Pizzato Elettrica, it ensures machinery remains safely locked until all hazardous conditions have been removed.
This model belongs to the Pizzato NS series of safety locking switches featuring RFID-coded actuator recognition and integrated safety outputs. It is widely used in OEM machinery, robotics, and automated production systems where robust guarding and high functional safety levels are essential.
The NSD4AZ1SMK operates in a D working method configuration, meaning the actuator is locked using a de-energised 24 Vdc solenoid. The safety outputs are enabled only when the guard is correctly closed and secured. This ensures high reliability in preventing unintended machine access during hazardous operation. {index=1}
Key Advantages
- Integrated RFID-coded safety interlock system for high tamper resistance.
- Solenoid-driven guard locking with de-energised safety logic.
- High holding force up to industrial safety standards (NS series architecture).
- Designed for OEM machinery, robotics, and automation systems.
- Robust technopolymer housing suitable for harsh environments.
- Supports series connection of multiple safety devices in complex systems.
Key Features
- Pizzato NS series safety interlock switch.
- Model: NSD4AZ1SMK.
- RFID high-coded actuator detection system (NS-F41 compatible architecture).
- 2 safety inputs (IS1–IS2).
- 2 safety outputs (OS1–OS2).
- 1 actuator inserted output signal (O3).
- 1 actuator locked output signal (O4).
- 2 solenoid activation inputs (IE1–IE2).
- 1 programming/reset input (I3).
- M12 connector, 12-pole configuration.
Reliable Guard Locking for Industrial Safety Systems
The Pizzato NSD4AZ1SMK prevents access to hazardous machine areas by ensuring the guard remains locked until safe conditions are confirmed. The RFID system provides coded actuator recognition, significantly reducing the risk of tampering or incorrect actuator substitution.
The integrated safety outputs allow direct connection to safety PLCs or controllers, enabling real-time monitoring of guard status, actuator insertion, and lock condition within industrial automation systems.
Typical Applications
- Industrial robotic safety cells.
- Automated manufacturing systems.
- Packaging and processing machinery.
- Machine tools with safety guarding.
- OEM industrial automation equipment.
- Material handling and conveyor safety systems.
