Why Choose the Pizzato ST DD420N3-E1T ST D Series Safety Sensor?
The Pizzato ST DD420N3-E1T is an industrial RFID non-contact safety sensor with coded actuator designed for reliable monitoring of guards, doors and protective devices on automated machinery. Part of the Pizzato ST D Series, it uses digitally coded RFID technology to detect the associated actuator without mechanical contact, helping reduce wear and maintain dependable switching through frequent operating cycles.
The ST DD420 configuration provides two safety inputs IS1 and IS2, two safety outputs OS1 and OS2, one signalling output O3 and one programming input I3. Its redundant electronic architecture supports integration into high-performance machine safety systems, with the ST D series capable of supporting safety functions up to PL e, Category 4 and SIL 3 when correctly integrated into an appropriate safety architecture.
Operating from a 24 V DC supply, the ST DD420N3-E1T features an integrated 3 m PVC cable and an E1T high-level coded RFID actuator. The E actuator format provides an extended 20 mm actuation distance and front fixing, offering additional alignment tolerance for machine guarding applications. IP67 and IP69K protection further support reliable use in demanding industrial environments.
Key Advantages
- Non-contact RFID safety monitoring reduces mechanical wear during frequent guard operation.
- E1T high-level coded actuator provides enhanced resistance to actuator substitution and manipulation.
- Extended 20 mm actuation distance provides generous installation and alignment tolerance.
- Two safety inputs and two safety outputs support flexible machine safety architectures.
- Integrated 3 m PVC cable provides convenient direct wiring to machine control equipment.
- Supports safety functions up to PL e, Category 4 and SIL 3 when correctly integrated.
Key Features
- Pizzato ST D Series RFID safety sensor.
- Digitally coded RFID non-contact 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 3 m PVC cable.
- E1T high-level coded RFID actuator.
- 20 mm actuation distance.
- Four LEDs for convenient 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 devices without requiring physical contact between the sensor and actuator. Eliminating mechanical switching elements helps provide a long operating life in machinery with frequent guard cycles, while digitally coded actuators provide increased protection against manipulation compared with conventional magnetic or mechanical sensing methods.
The ST DD420N3-E1T combines dual safety inputs and outputs with signalling and programming functionality for flexible integration into compatible machine safety architectures. Its high-level coded E1T actuator and extended 20 mm actuation distance make this configuration particularly useful where greater sensor-to-actuator tolerance is required, while the integrated 3 m cable simplifies connection to machine control equipment.
Typical Applications
- Machine guard and access-door monitoring.
- Guards requiring increased sensor-to-actuator alignment tolerance.
- Automated production and assembly machinery.
- Packaging and processing equipment.
- Robotic cells and automated manufacturing systems.
- Conveyors and material handling machinery.
