ST DL421N2-E1T Pizzato ST D series safety sensor

Why Choose the Pizzato ST DL421N2-E1T Safety Sensor?

The Pizzato ST DL421N2-E1T is a robust RFID safety sensor designed for non-contact monitoring of guards, doors and protective devices on industrial machinery. As part of the advanced Pizzato ST D series, it combines RFID technology with digitally coded actuation to provide dependable machine safety and a high level of protection against tampering or bypassing.

The sensor uses redundant electronic architecture and provides two safety inputs IS1-IS2, two safety outputs OS1-OS2, one signalling output O3 and one programming input I3. Its non-contact operating principle eliminates mechanical switching elements, helping provide a long service life in machinery with frequent operating cycles and demanding industrial environments.

The ST DL421N2-E1T operates from a 12–24 V DC supply and features a high coding level RFID actuator with a 20 mm actuation distance. Its technopolymer housing has the connection output positioned on the left and provides IP67 and IP69K protection, making the sensor suitable for industrial environments where resistance to dust, water and high-pressure cleaning is important.

Key Advantages

• Non-contact RFID safety sensor for machinery guarding applications.
• High coding level actuator provides enhanced protection against manipulation.
• 20 mm actuation distance provides flexibility for non-contact guard monitoring.
• Two safety inputs and two safety outputs support integration into machine safety circuits.
• Redundant electronics support safety systems up to PL e and SIL 3 when correctly integrated.
• IP67 and IP69K protection for demanding industrial environments.
• No mechanical switching elements, helping provide a long operating life with frequent switching cycles.

Key Features

• Pizzato ST D series RFID safety sensor.
• 12–24 V DC supply voltage.
• 2 safety inputs IS1-IS2.
• 2 safety outputs OS1-OS2.
• 1 signalling output O3.
• 1 programming input I3.
• High coding level 1T RFID actuator.
• 20 mm actuator operating distance.
• Technopolymer sensor housing with left-hand connection output.
• 2 m PVC cable connection.
• Four LEDs provide sensor status indication.
• Suitable for safety systems up to PL e and SIL 3.

Reliable RFID Safety Monitoring for Industrial Machinery

RFID safety sensors provide non-contact monitoring of movable guards and protective devices by detecting a digitally coded actuator mounted on the corresponding guard. The Pizzato ST D series uses RFID technology to provide a high degree of protection against manipulation while avoiding the mechanical wear associated with conventional electromechanical safety switches.

The ST DL421N2-E1T incorporates redundant electronics and dedicated safety inputs and outputs for integration into modern machine safety architectures. Compatible ST D sensors can be connected in series with other suitable Pizzato safety devices, allowing multiple guards to be monitored while maintaining a high safety level when the complete system is correctly designed and validated.

Typical Applications

• Machine safety doors and access guards.
• Industrial automation equipment.
• Packaging and production machinery.
• Robotic cells and automated manufacturing systems.
• Machine tools and processing equipment.
• Conveyors and material handling systems.
• Applications requiring non-contact safety guard monitoring.