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ST HD420MK Pizzato ST H series safety sensor
Pizzato ST HD420MK is a 24 V DC ST H series electronic RFID safety sensor with two safety inputs, two safety outputs, one signalling output, one programming input and an integrated M12 connector for non-contact machine guard monitoring.
£86.30
Product Overview
The Pizzato ST HD420MK is an electronic RFID safety sensor from the Pizzato ST H series, designed for non-contact monitoring of machine guards, safety doors and protective access points. Its electronic sensing technology enables reliable guard-state detection without the mechanical engagement required by traditional tongue-operated safety switches.
The ST HD420MK operates from a 24 V DC supply and provides two IS1–IS2 safety inputs, two OS1–OS2 safety outputs, one O3 signalling output and one I3 programming input. The MK version features an integrated M12 connector, providing a convenient connection arrangement for industrial machine-safety installations.
Key Advantages
- RFID non-contact sensing: Provides electronic monitoring of machine guards and safety doors without mechanical actuator engagement.
- Programmable functionality: Includes an I3 programming input for configuration within the HD420 architecture.
- Dual safety channels: Two safety inputs and two safety outputs support integration into industrial safety systems.
- Auxiliary signalling: The O3 output provides additional sensor status information for machine control.
- M12 connectivity: The MK configuration uses an integrated M12 connector for convenient installation and servicing.
- Flexible actuator selection: This sensor configuration can be paired with a suitable compatible ST-series RFID actuator selected for the application.
Key Features
- Pizzato ST H series safety sensor.
- Electronic RFID non-contact detection.
- 24 V DC supply voltage.
- 2 safety inputs: IS1–IS2.
- 2 safety outputs: OS1–OS2.
- 1 signalling output: O3.
- 1 programming input: I3.
- Integrated M12 connector (MK configuration).
- Technopolymer ST H series housing.
- Designed for machine guarding and safety interlocking.
- Suitable for industrial automation systems.
- Non-contact operation reduces mechanical wear.
Reliable & Durable
The Pizzato ST HD420MK uses electronic RFID sensing to monitor a compatible actuator without physical switching contact. This non-contact principle reduces mechanical wear and makes the sensor well suited to frequently operated guards and doors. Its compact ST H series construction is designed for dependable integration into industrial machinery and automated safety systems.
Typical Applications
- Machine guard monitoring.
- Safety doors and protective enclosures.
- Industrial safety interlocking.
- Automated manufacturing machinery.
- Packaging and processing equipment.
- Robotic cells and automated work areas.
- OEM machine-safety systems.
FAQs
Technical Specifications
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| Contacts | 2 safety outputs (OSSD) + 1 signalling | |
|---|---|---|
| Product Series | Pizzato ST H (RFID) | |
| Sensing Principle | RFID (coded) | |
| Manufacturer | Pizzato Elettrica | |
| Part Number | ST HD420MK | |
| SKU | STHD420MK | |
| Series | ST H | |
| Product Type | Electronic RFID safety sensor | |
| Technology | RFID non-contact detection | |
| Supply Voltage | 24 V DC | |
| Safety Inputs | 2 (IS1–IS2) | |
| Safety Outputs | 2 (OS1–OS2) | |
| Signalling Output | 1 (O3) | |
| Programming Input | 1 (I3) | |
| Connection Configuration | MK | |
| Connection Type | Integrated M12 connector | |
| Housing | Technopolymer, ST H series | |
| Application | Machine guarding, safety interlocking and industrial automation | |
| HS Code | 85369095 |
What is the Pizzato ST HD420MK?
It is an electronic RFID safety sensor from Pizzato's ST H series, designed for non-contact monitoring of machine guards, safety doors and protective access points.
What inputs and outputs does the ST HD420MK provide?
The sensor provides two IS1–IS2 safety inputs, two OS1–OS2 safety outputs, one O3 signalling output and one I3 programming input.
Does the ST HD420MK use non-contact sensing?
Yes. It uses RFID technology to detect a compatible actuator without mechanical switching contact between the sensor and actuator.
How is the Pizzato ST HD420MK connected?
The MK configuration features an integrated M12 connector for connection to the machine wiring system.
Where can the ST HD420MK be used?
Typical applications include machine guarding, safety interlocking, protective doors, automated machinery, robotic cells and other industrial automation systems requiring non-contact guard monitoring.
Trusted by
Pizzato Elettrica specialises in industrial position switches, machine-safety devices and control products. Its ST H series provides RFID-based non-contact sensing solutions for reliable guard monitoring across industrial machinery and automation systems.
