ST DD420N1-D1T Pizzato ST D series safety sensor

Why Choose the Pizzato ST DD420N1-D1T ST D Series Safety Sensor?

The Pizzato ST DD420N1-D1T is a robust RFID non-contact safety sensor with actuator designed for reliable monitoring of guards, doors and protective devices on industrial machinery. As part of the Pizzato ST D series, it combines coded RFID detection with electronic PNP safety outputs to provide dependable machine safeguarding without the mechanical wear associated with conventional electromechanical safety switches.

The ST DD420N1-D1T provides two safety inputs IS1-IS2, two safety outputs OS1-OS2, one signalling output O3 and one programming input I3. This comprehensive I/O configuration supports integration into modern machine safety architectures, while the sensor is suitable for safety functions up to PL e and SIL 3 when correctly integrated into an appropriate safety system.

Operating from a 24 V DC supply, the ST DD420N1-D1T features a PVC cable connection and is supplied with a high-level coded D1T actuator. The actuator provides a 12 mm actuation distance and measures approximately 45 × 25 × 18 mm, with front and side fixing options. IP67 and IP69K protection and an operating temperature range of -25 °C to +70 °C make the sensor suitable for demanding industrial environments.

Key Advantages

• Non-contact RFID safety sensor with actuator for industrial machine guarding.
• High-level coded D1T actuator provides enhanced protection against manipulation.
• 12 mm actuation distance provides practical installation tolerance between sensor and actuator.
• Two safety inputs and two safety outputs support flexible integration into machine safety circuits.
• Suitable for safety applications up to PL e and SIL 3 when correctly integrated.
• IP67 / IP69K protection supports operation in demanding industrial environments.

Key Features

• Pizzato ST D series RFID safety sensor.
• RFID coded non-contact switching technology.
• 24 V DC power supply.
• 2 safety inputs: IS1 and IS2.
• 2 PNP safety outputs: OS1 and OS2.
• 1 signalling output: O3.
• 1 programming input: I3.
• PVC cable electrical connection.
• High-level coded D1T actuator.
• 12 mm actuation distance.
• Integrated status indication for convenient machine diagnostics.
• IP67 and IP69K environmental protection.

Reliable Safety Monitoring for Industrial Automation

RFID safety sensors such as the Pizzato ST D series monitor the position of movable guards by detecting a coded actuator without requiring physical contact between the sensor and actuator. This non-contact operating principle helps minimise mechanical wear while providing consistent switching performance in machinery where guards and access doors may be opened frequently.

The ST DD420N1-D1T combines dual safety inputs and outputs with a signalling output and programming input for flexible integration into compatible industrial safety systems. Its high-level coded actuator improves resistance to manipulation, while the PNP electronic outputs, status indication and robust environmental protection support reliable operation and straightforward diagnostics in modern automated machinery.

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 high-level coded non-contact safety interlocking.