ST DD420N2 Pizzato ST D series safety sensor

Why Choose the Pizzato ST DD420N2 ST D Series Safety Sensor?

The Pizzato ST DD420N2 is an industrial RFID non-contact safety sensor designed for reliable monitoring of movable guards, doors and protective devices on machinery. Part of the Pizzato ST D Series, it uses RFID technology to detect a compatible coded actuator without physical contact, helping eliminate mechanical switching wear and supporting dependable operation in high-cycle industrial applications.

The ST DD420N2 provides two safety inputs IS1 and IS2, two safety outputs OS1 and OS2, one signalling output O3 and one programming input I3. This I/O configuration supports flexible integration into modern machine safety architectures, including applications where multiple compatible safety devices are interconnected and monitored by an appropriate safety controller.

Operating from a 24 V DC power supply, the N2 configuration features an integrated 2 m PVC cable for direct machine wiring. The sensor uses a durable technopolymer housing with the cable connection exiting from the right-hand side and provides IP67 protection according to EN 60529 and IP69K protection according to ISO 20653, with an operating temperature range from -25 °C to +70 °C.

Key Advantages

• Non-contact RFID safety sensing reduces mechanical wear in frequently operated guards.
• Two safety inputs and two safety outputs support flexible safety-system integration.
• Dedicated O3 signalling output provides machine-status information.
• I3 programming input provides additional configuration functionality.
• Integrated 2 m PVC cable simplifies direct electrical connection.
• IP67 / IP69K protection supports use in demanding industrial environments.

Key Features

• Pizzato ST D Series RFID safety sensor.
• RFID coded non-contact sensing technology.
• 24 V DC power supply.
• 2 safety inputs: IS1 and IS2.
• 2 safety outputs: OS1 and OS2.
• 1 signalling output: O3.
• 1 programming input: I3.
• Integrated 2 m PVC cable.
• Technopolymer sensor housing.
• Right-hand cable output configuration.
• IP67 and IP69K environmental protection.

Reliable Safety Monitoring for Industrial Automation

The Pizzato ST D series uses RFID technology to determine whether a compatible coded actuator is correctly positioned near the safety sensor. Because detection takes place without mechanical contact, the system avoids the physical wear associated with traditional tongue-operated or mechanically actuated safety switches and is well suited to machinery where guards are opened and closed frequently.

The ST DD420N2 combines dual safety inputs and outputs with dedicated signalling and programming connections, allowing it to form part of a compatible industrial safety architecture. Its integrated 2 m PVC cable simplifies machine wiring, while the robust enclosure and high ingress protection make the sensor suitable for production machinery, automated equipment and other demanding guard-monitoring installations.

Typical Applications

• Machine guard and access-door monitoring.
• Automated production and assembly machinery.
• Packaging and processing equipment.
• Robotic cells and automated manufacturing systems.
• Conveyors and material handling equipment.
• Industrial machinery requiring non-contact RFID safety monitoring.