ST DD820MK Pizzato ST D series safety sensor

Why Choose the Pizzato ST DD820MK Safety Sensor?

The Pizzato ST DD820MK is a compact and highly reliable RFID safety sensor designed for non-contact monitoring of guards, doors and protective devices on industrial machinery. As part of the advanced Pizzato ST D series, it provides electronic guard monitoring for machine builders and automation engineers requiring dependable safety performance without the mechanical wear associated with conventional safety switches.

The ST D series uses RFID (Radio Frequency Identification) technology to detect a coded actuator without physical contact. This operating principle provides excellent resistance to wear in machinery with frequent guard-opening cycles, while coded actuator recognition helps protect safety systems against manipulation and deliberate bypassing.

Designed around a 24 V DC industrial control supply, the ST D platform incorporates two safety inputs and two PNP OSSD safety outputs for integration with compatible safety modules and safety PLCs. Its rugged glass-fibre reinforced technopolymer construction and ST D series architecture make it suitable for demanding machine-safety installations.

Key Advantages

• Non-contact RFID safety sensor designed for industrial machine guarding.
• ST D series can support systems up to PL e, Category 4 and SIL 3 when correctly integrated.
• Coded RFID technology provides enhanced protection against safety-system manipulation.
• Two PNP OSSD safety outputs enable integration with compatible safety control equipment.
• 24 V DC operation suits standard industrial safety and automation systems.
• Non-contact detection eliminates mechanical switching wear between the sensor and actuator.
• Electronic diagnostics and status indication simplify commissioning and troubleshooting.
• Suitable for machinery with frequent guard opening and closing cycles.

Key Features

• Pizzato ST D series RFID safety sensor.
• 24 V DC rated operating voltage.
• RFID-based non-contact actuator detection.
• 2 safety inputs IS1-IS2.
• 2 safety outputs OS1-OS2.
• Safety outputs use PNP OSSD technology.
• 1 signalling output O3.
• 1 programming input I3.
• Four LED indicators for sensor status indication.
• Glass-fibre reinforced self-extinguishing technopolymer housing.
• Designed for integration with compatible machine safety modules and safety PLCs.

Reliable RFID Guard Monitoring for Industrial Machinery

RFID safety sensors such as the Pizzato ST D series monitor movable guards by electronically detecting a coded actuator rather than relying on mechanically operated contacts. When the actuator is correctly positioned, the sensor communicates the guard status through its electronic safety outputs, allowing compatible safety control equipment to manage hazardous machine functions.

The ST D platform provides two safety inputs, two PNP OSSD safety outputs, a signalling output and a programming input. When incorporated into an appropriately designed safety architecture, ST D sensors can support machinery safety systems reaching up to SIL 3, PL e and Category 4, making the series suitable for demanding industrial safeguarding applications.

Typical Applications

• Machine guard and access-door monitoring.
• Packaging and production machinery.
• Automated assembly systems.
• Material handling and conveyor equipment.
• Robotic and automated production cells.
• Processing and manufacturing machinery.
• OEM machinery and integrated industrial safety systems.