Why Choose the Pizzato ST HE420N5-H0TF ST H Series Safety Sensor?
The Pizzato ST HE420N5-H0TF is a robust RFID electronic safety interlock sensor with magnetic holding designed for reliable non-contact monitoring of guards, doors and access points on industrial machinery. As part of the Pizzato ST H RFID Safety Sensor Series, it combines coded RFID detection with electronic safety inputs and outputs, providing dependable guard monitoring without the mechanical wear associated with conventional contact-based safety switches.
Operating from a 24 V DC supply, the ST HE420N5-H0TF 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 with modern safety controllers and allows multiple safety devices to be incorporated into sophisticated machine guarding architectures.
The ST HE420N5-H0TF uses a low-level coded actuator with an actuation distance of approximately 11 mm and incorporates a permanent magnet providing approximately 40 N holding force. Its integrated 5 m PVC cable, durable technopolymer housing and IP67 / IP69K protection make it well suited to demanding industrial installations where reliable guard positioning and safety monitoring are required.
Key Advantages
- Reliable RFID non-contact safety interlocking for industrial machine guards.
- Integrated permanent magnet provides approximately 40 N holding force to help keep guards closed.
- Approx. 11 mm actuation distance provides practical alignment tolerance.
- Non-contact operation reduces mechanical wear and maintenance requirements.
- Two safety inputs and two safety outputs support flexible safety circuit integration.
- Dedicated signalling and programming connections support machine control and diagnostics.
- Integrated 5 m PVC cable simplifies installation and wiring.
- IP67 / IP69K protection supports use in demanding industrial environments.
Key Features
- Pizzato ST H RFID Safety Sensor Series.
- 24 V DC supply voltage.
- 2 safety inputs IS1–IS2.
- 2 safety outputs OS1–OS2.
- 1 signalling output O3.
- 1 programming input I3.
- RFID coded non-contact actuator detection.
- Low actuator coding level.
- Approx. 11 mm actuation distance.
- Permanent magnet with approximately 40 N holding force.
- Integrated 5 m PVC cable.
- Symmetrical technopolymer ST H housing with 78 mm mounting hole spacing.
- IP67 according to EN 60529 and IP69K according to ISO 20653.
- Operating temperature from -25 °C to +70 °C.
Reliable Safety Monitoring for Industrial Automation
RFID safety sensors such as the Pizzato ST HE420N5-H0TF monitor the position of machine guards by detecting a coded actuator without requiring physical contact between the sensor and actuator. This non-contact operating principle reduces mechanical wear while providing dependable guard position monitoring across repeated machine operating cycles.
The ST H series also incorporates magnetic holding capability to help keep lightweight guards closed in applications affected by vibration, closing recoil or air turbulence. Combined with flexible safety I/O, signalling and programming functionality, this makes the ST HE420N5-H0TF suitable for integration into modern industrial safety and automation systems.
Typical Applications
- Industrial machine guard monitoring.
- Safety doors and movable access panels.
- Robotic cells and automated manufacturing systems.
- Packaging and processing machinery.
- Conveyor and material handling equipment.
- Guards exposed to vibration or closing recoil.
- OEM machine building and industrial safety systems.
