ST DL420N5-D1T Pizzato ST D series safety sensor

Why Choose the Pizzato ST DL420N5-D1T Safety Sensor?

The Pizzato ST DL420N5-D1T is a high-performance RFID-coded non-contact safety sensor designed for monitoring guards, doors and protective devices on industrial machinery. As part of the advanced Pizzato ST D series, it combines RFID technology with redundant safety electronics to provide dependable access monitoring and a high level of protection against actuator manipulation.

The ST DL420N5-D1T incorporates two safety inputs IS1-IS2, two safety outputs OS1-OS2, one signalling output O3 and one programming input I3, allowing straightforward integration into modern machine safety circuits. Multiple ST D sensors can also be connected in series while maintaining a high functional safety level, making the range particularly suitable for machinery with several access points.

Operating from a 24 V DC supply, the sensor uses a high-coded RFID actuator with an actuation distance of approximately 12 mm. Its compact technopolymer housing, integrated PVC cable and IP67 / IP69K protection provide reliable performance in demanding industrial environments where contamination, moisture and frequent operating cycles may be present.

Key Advantages

• Non-contact RFID safety sensing reduces mechanical wear and supports long operating life.
• High-level coded actuator helps prevent deliberate or accidental manipulation of machine guards.
• Supports safety architectures up to PL e / Category 4 and SIL 3 when correctly integrated.
• 12 mm actuation distance provides practical tolerance for guard alignment.
• Two safety inputs and two safety outputs allow integration with other compatible Pizzato safety devices.
• IP67 and IP69K protection supports operation in harsh industrial environments.

Key Features

• Pizzato ST D series RFID safety sensor.
• 24 V DC supply voltage.
• High-level RFID actuator coding.
• Approx. 12 mm actuation distance.
• 2 safety inputs IS1-IS2.
• 2 safety outputs OS1-OS2.
• 1 signalling output O3 and 1 programming input I3.
• Integrated status indication for rapid machine diagnostics.
• Compact technopolymer housing with left-side cable exit.
• IP67 / IP69K environmental protection.

Reliable RFID Guard Monitoring for Industrial Automation

RFID safety sensors such as the Pizzato ST D series monitor the position of machine guards without requiring direct mechanical contact between the sensor and actuator. The coded actuator is detected electronically, allowing the safety system to verify that a protective door, panel or guard is correctly positioned before hazardous machine movement is permitted.

The ST D architecture combines redundant electronics, coded RFID technology and series-connectable safety inputs and outputs. This makes the ST DL420N5-D1T well suited to automated machinery where multiple guard points must be monitored while maintaining a high functional safety level and reducing mechanical maintenance requirements.

Typical Applications

• Machine guard and access-door monitoring.
• Packaging and processing machinery.
• Automated assembly and production lines.
• Robotic cells and perimeter guarding.
• Conveyor and material handling equipment.
• OEM machinery and industrial automation systems.