ST DD421MK-D1T Pizzato ST D series safety sensor

Why Choose the Pizzato ST DD421MK-D1T ST D Series Safety Sensor?

The Pizzato ST DD421MK-D1T is an industrial RFID non-contact safety sensor complete with D1T actuator, designed for reliable monitoring of movable guards, access doors and protective devices. Part of the Pizzato ST D Series, it combines digitally coded RFID technology with a compact technopolymer housing to provide dependable safety monitoring without mechanical contact between the sensor and actuator.

The ST DD421MK-D1T provides two safety inputs IS1 and IS2, two safety outputs OS1 and OS2, one signalling output O3 and one programming input I3. Its D1T actuator provides a high coding level, increasing protection against actuator substitution and making the sensor particularly suitable for machinery where resistance to guard-interlock manipulation is important.

The sensor operates from a 10–30 V DC supply and features an integrated M12 stainless-steel connector with the connection positioned on the right-hand side of the housing. The D1T actuator provides a 12 mm actuation distance and measures 45 × 25 × 18 mm, with front and side fixing. IP67 and IP69K protection and an operating temperature range from -25 °C to +70 °C support installation in demanding industrial environments.

Key Advantages

• Non-contact RFID safety monitoring minimises mechanical wear during frequent guard operation.
• D1T high-level coded actuator provides enhanced resistance to actuator substitution and manipulation.
• 12 mm actuation distance provides practical installation tolerance between the sensor and actuator.
• Two safety inputs and two safety outputs support flexible integration into industrial safety architectures.
• Integrated M12 stainless-steel connector provides a robust, service-friendly electrical connection.
• IP67 / IP69K protection supports reliable operation in demanding machinery environments.

Key Features

• Pizzato ST D Series RFID safety sensor.
• Complete with D1T high-level coded RFID actuator.
• RFID coded non-contact sensing technology.
• 10–30 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 M12 stainless-steel connector.
• 12 mm actuator operating distance.
• Integrated sensor status indication.
• IP67 and IP69K environmental protection.

Reliable Safety Monitoring for Industrial Automation

The Pizzato ST D series uses RFID technology to monitor protective guards without requiring mechanical contact between the sensor and actuator. This operating principle eliminates the mechanical wear associated with conventional tongue-operated safety switches and supports reliable monitoring on machinery where guards, doors and covers are opened frequently.

The ST DD421MK-D1T combines dual safety inputs and outputs with dedicated signalling and programming functionality for integration into compatible industrial safety systems. Its high-level coded D1T actuator provides increased protection against substitution, while the integrated M12 stainless-steel connector simplifies installation, maintenance and sensor replacement without requiring a permanently attached cable.

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 machinery.
• Industrial machinery requiring high-level coded RFID guard monitoring.