ST HD420MP-H1T Pizzato ST H series safety sensor

Why Choose the Pizzato STHD420MP-H1T Safety Interlock Sensor?

The Pizzato STHD420MP-H1T is a high-performance RFID safety interlock sensor designed for machine guarding, access control, and industrial automation safety applications. As part of the advanced Pizzato ST H series RFID safety sensor platform, it provides secure non-contact monitoring of safety doors and protective guards in demanding industrial environments.

This model uses high-level coded RFID actuator recognition (H1T logic) to ensure that only a correctly paired actuator enables machine operation, helping reduce tampering and unintended bypass risks. It is widely used in OEM machinery, robotics, packaging systems, and automated production lines where functional safety compliance with PL e (ISO 13849-1) and SIL 3 (IEC 61508) is required.

The STHD420MP-H1T features a rugged technopolymer housing with integrated M12 connector (MP version), enabling fast installation and reliable wiring in industrial control panels. Its non-contact RFID sensing eliminates mechanical wear, improving durability and ensuring long service life in high-cycle automation environments. {index=1}

Key Advantages

• High-reliability RFID-coded safety interlock sensor for machine guarding systems.
• Non-contact operation reduces mechanical wear and maintenance costs.
• High coding level actuator recognition for improved tamper resistance.
• Designed for industrial automation and safety-critical environments.
• Compatible with safety PLC systems and modern machine safety architectures.
• Integrated M12 connector for fast installation (MP housing type).

Key Features

• Pizzato ST H series RFID safety sensor.
• Model: STHD420MP-H1T.
• RFID-coded actuator detection system.
• 2 safety inputs (IS1–IS2).
• 2 safety outputs (OS1–OS2).
• 1 signalling output (O3).
• 1 programming input (I3).
• High coding level actuator system.
• Actuation distance up to approx. 11 mm.
• Integrated M12 connector (MP version).
• 24 V DC supply voltage.
• IP67 / IP69K protection rating.

Advanced Machine Safety with RFID Technology

The Pizzato STHD420MP-H1T uses RFID-coded actuator recognition to ensure that only a correctly paired actuator can enable machine operation. This significantly improves safety integrity and reduces the risk of unauthorized access in industrial environments.

According to Pizzato ST H series documentation, 420-series variants typically include expanded control functionality such as additional programming or monitoring input options compared to lower series models, supporting more advanced safety architectures in machine design. ([turn0search13])

The ST H series is engineered for harsh industrial environments with IP67/IP69K protection, making it suitable for robotics, packaging machinery, CNC systems, and automated production lines. ([turn0search15])

Typical Applications

• Industrial machine guarding systems.
• Automated production lines.
• Robotics safety enclosures.
• CNC machine access doors.
• Packaging machinery.
• General industrial automation systems.