ST HE420MK-H0TG Pizzato ST H series safety sensor

Why Choose the Pizzato ST HE420MK-H0TG Safety Sensor?

The Pizzato ST HE420MK-H0TG is an advanced RFID non-contact safety sensor from the Pizzato ST H series, developed for reliable monitoring of guards, doors and access points on industrial machinery. Its electronic RFID technology detects a coded actuator without physical contact, providing dependable safety interlocking while reducing the mechanical wear associated with conventional electromechanical safety switches.

Designed for modern industrial safety architectures, the ST H platform combines electronic guard monitoring with flexible safety connectivity for integration with safety modules and safety PLCs. The ST HE420 configuration provides two safety inputs IS1–IS2, two safety outputs OS1–OS2, one signalling output O3 and one programming input I3, making it suitable for both individual guard monitoring and series-connected safety systems.

The ST HE420MK-H0TG operates from a 24 V DC supply and uses an integrated M12 stainless steel connector for robust, detachable machine wiring. The H0TG actuator configuration combines RFID detection with magnetic guard retention, helping keep lightweight guards in their intended closed position while the safety electronics continuously monitor actuator presence.

Key Advantages

• Non-contact RFID safety sensing reduces mechanical wear and supports long service life.
• Coded actuator recognition provides dependable machine guard position monitoring.
• Two safety inputs IS1–IS2 support integration into series-connected safety architectures.
• Two safety outputs OS1–OS2 provide electronic safety signalling to compatible safety controllers.
• Dedicated O3 signalling output and I3 programming input provide flexible monitoring and configuration functionality.
• Integrated M12 stainless steel connector simplifies installation, maintenance and sensor replacement.
• Magnetic guard retention helps prevent unwanted opening caused by vibration or minor external forces.

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.
• Magnetic actuator retention for machine guards.
• Industrial ST H series construction.
• Designed for machine guarding, safety interlocking and industrial automation.

Reliable Safety Monitoring for Industrial Automation

RFID safety sensors such as the Pizzato ST HE420MK-H0TG monitor the position of movable machine guards without requiring mechanical engagement 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 system, allowing the machinery controller to determine whether hazardous machine functions may operate.

The ST H series is particularly suited to automated machinery where reliable non-contact monitoring and flexible electronic integration are required. Safety inputs allow compatible sensors to form part of a series-connected architecture, while dual safety outputs, a separate signalling output and a programming input provide the functionality required for sophisticated machine safety and diagnostic systems.

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.