ST DD421N1-E1T Pizzato ST D series safety sensor

Why Choose the Pizzato ST DD421N1-E1T ST D Series Safety Sensor?

The Pizzato ST DD421N1-E1T is a non-contact RFID safety sensor with high-coded actuator designed for monitoring protective guards, access doors and other safety devices on industrial machinery. Part of the Pizzato ST D series, it uses RFID technology to provide reliable guard position detection without mechanical contact between the sensor and actuator, helping deliver long service life even in applications with frequent operating cycles.

The ST DD421N1-E1T is supplied with an E1T high-coded RFID actuator. The E1T actuator configuration provides a 20 mm actuation distance, offering generous installation tolerance between the sensor and actuator while high-level RFID coding provides enhanced protection against manipulation in safety-related machine guarding applications.

Designed for high-performance machine safety systems, the ST D series features redundant electronics, two safety inputs and two safety outputs and can support safety architectures up to PL e, Category 4 and SIL 3 when correctly integrated. The series also provides IP67 / IP69K protection and status indication, making the ST DD421N1-E1T suitable for demanding industrial machinery and automated production environments.

Key Advantages

• Non-contact RFID safety sensor for industrial guard monitoring.
• E1T high-coded RFID actuator provides enhanced protection against manipulation.
• 20 mm actuation distance provides generous tolerance for machine guard alignment.
• Two safety inputs and two safety outputs support flexible safety system integration.
• Supports safety systems up to PL e, Category 4 and SIL 3 when correctly integrated.
• Up to 32 compatible sensors can be connected in series while maintaining the maximum PL e safety level.
• IP67 / IP69K protection supports demanding industrial environments.
• Non-contact operation eliminates mechanical switching wear between the sensor and actuator.

Key Features

• Pizzato ST D series RFID safety sensor.
• RFID coded non-contact switching technology.
• E1T high-coded RFID actuator.
• 20 mm actuation distance.
• 24 V DC power supply.
• 2 safety inputs.
• 2 safety outputs.
• Redundant electronic architecture.
• Digitally coded actuator detection.
• Series connection with compatible Pizzato safety devices.
• Up to 32 sensors connectable in series while maintaining PL e.
• 4 LEDs for sensor status indication.
• IP67 / IP69K protection rating.
• Designed for guards, access doors and protective devices on industrial machinery.

Reliable RFID Safety Monitoring for Industrial Machinery

RFID safety sensors such as the Pizzato ST D series monitor protective devices without requiring physical contact between the sensor and actuator. The digitally coded actuator is recognised electronically, allowing the machine safety system to determine whether the associated guard is correctly positioned before hazardous machine functions are permitted.

The 20 mm actuation distance of the E1T actuator provides useful installation tolerance, while high-level RFID coding improves resistance to inappropriate substitution or manipulation. Combined with redundant electronics, safety inputs and outputs, series connection capability and robust environmental protection, the ST DD421N1-E1T provides a dependable solution for modern industrial guard monitoring applications.

Typical Applications

• Industrial machine guard and access door monitoring.
• Packaging and production machinery.
• Robotic cells and automated manufacturing systems.
• Material handling and conveyor systems.
• Machine tools and processing equipment.
• Safety enclosures and protective guarding.
• Assembly and automated production lines.
• OEM machinery and industrial automation systems.