ST HE420MK-H0TF Pizzato ST H series safety sensor

Why Choose the Pizzato ST HE420MK-H0TF Safety Sensor?

The Pizzato ST HE420MK-H0TF is an advanced RFID non-contact safety sensor with magnetic holding designed for monitoring guards, doors and access points on industrial machinery. Part of the Pizzato ST H series, it combines coded RFID actuator detection with electronic safety inputs and outputs, providing a dependable solution for machine guarding, safety interlocking and industrial automation.

The ST HE420MK-H0TF provides two safety inputs IS1–IS2, two safety outputs OS1–OS2, one signalling output O3 and one programming input I3, supporting integration into modern safety control architectures and series-connected guarding systems. Its low-level coded RFID technology detects the associated actuator without physical contact, reducing mechanical wear compared with conventional electromechanical safety switches.

Operating from a 24 V DC supply, the ST HE420MK-H0TF uses an integrated M12 stainless steel connector for convenient installation, servicing and replacement. The ST H platform combines non-contact safety monitoring with permanent magnetic holding, helping retain the associated guard in its closed position while providing robust electronic monitoring for demanding industrial machinery.

Key Advantages

• Non-contact RFID safety sensing minimises mechanical wear and maintenance requirements.
• Coded actuator detection provides dependable machine guard position monitoring.
• Two safety inputs IS1–IS2 support integration into series-connected safety systems.
• Two safety outputs OS1–OS2 provide electronic safety signalling to compatible controllers.
• Dedicated O3 signalling output and I3 programming input support flexible control and diagnostic functions.
• Integrated M12 stainless steel connector simplifies machine wiring, maintenance and sensor replacement.
• Permanent magnetic holding helps retain lightweight guards in their closed position.

Key Features

• Pizzato ST H RFID safety sensor series.
• 24 V DC supply voltage.
• RFID coded non-contact detection technology.
• 2 safety inputs IS1–IS2.
• 2 safety outputs OS1–OS2.
• 1 signalling output O3.
• 1 programming input I3.
• Low-level coded actuator configuration.
• Integrated M12 stainless steel connector.
• Permanent magnetic actuator holding.
• Compact technopolymer ST H series housing.
• Designed for integration with industrial safety controllers and safety PLCs.

Reliable Safety Monitoring for Industrial Automation

RFID safety sensors such as the Pizzato ST HE420MK-H0TF monitor movable machine guards without requiring mechanical contact between the sensor and actuator. When the correctly positioned coded actuator is detected, the electronic safety outputs communicate the guard condition to the connected safety controller, allowing the machinery safety system to determine whether hazardous machine functions can operate.

The ST H series combines RFID guard monitoring with magnetic holding for applications where a guard benefits from being retained in its closed position during normal operation. With safety inputs, dual safety outputs, a signalling output and a programming input, the ST HE420MK-H0TF provides flexible integration for OEM machinery, automated production systems and installations incorporating multiple guarded access points.

Typical Applications

• Machine guard and safety-door monitoring.
• Safety interlocking systems.
• Automated production and assembly machinery.
• Robot cells and robotic manufacturing systems.
• Packaging and processing equipment.
• Conveyors and material handling systems.