Optimise your guard door and improve machine safety with the Sensaguard 440N RFID Cylindrical Non-Contact Safety Switches by Allen Bradley Guardmaster. These switches ensure a superior level of security and protection to reduce risk of injury, damage to equipment, and overall downtime.

The Sensaguard safety switches feature advanced latest generation Radio Frequency Identification technology for coding and inductive technology for sensing, which makes them highly reliable and tamper-resistant. These switches are designed to be installed on machine guard doors, offer tolerance to door misalignment, and have a large sensing range. These versatile switches can meet a broad range of industrial applications.

These safety interlock switches can be connected standard safety relays, SmartGuards and safety I/O blocks to suit your needs. They also maintain PLe, SIL 3, Cat 4 rating even with multiple units connected in series. They have a high IP69K rating, which ensures that they can withstand powerful jets of water and are fully protected against dust ingress. The Sensaguard switches are a cost-effective solution and are perfectly suited for use with sliding, hinged, and lift-off machine guard doors.

• 3 x PNP outputs (including 1 auxiliary)
• Excellent IP69K environmental protection rating
• Highly tamper-proof due to secure RFID sensing
• No dedicated controller is required
• LED indication for door status and fast troubleshooting
• Can be connected in series with other safety components (light curtain, E-stops, key interlock switches)
• Superior reliability due to short-circuit and over-voltage protection
• Uses the standard proximity brackets
• Multiple sensing directions offers greater flexibility

Note: Supplied with actuator. Stainless steel version is suitable for use in harsh environments.

Standards: IEC60947-5-3, IEC 61508, EN954

The 440N-Z21S26A Sensaguard Non-Contact Safety Switch has a Standard code 30mm actuator, 18mm red plastic barrel housing, and a 3m cable. This switch has an assured sensing distance of 25mm and LED indication.

Rockwell Automation is a global leader in industrial automation and digital transformation, and brings smart manufacturing to life. With a long legacy of creating Allen-Bradley® integrated control and information solutions, we help make you as productive as possible. Our portfolio of sensing, safety and motor control products can support your move towards smart machine applications. Allen-Bradley® IO-Link sensors are data-enabled and communicate with all field buses, providing diagnostic and health information about the device before a machine stops, and enabling quick production changeovers through fast parameter downloads from PLCs into the device. This reduces machine downtime and increases manufacturing OEE. For safety components, products with built-in diagnostics simplify the set-up of the smart device, and reduce maintenance, leading to a more efficient, machine data-driven approach.

RFID stands for Radio Frequency Identification, which is a non-contact method of transferring digital data via radio frequency waves. Devices with this type of wireless communication usually consist of an RFID tag, an RFID reader, and an antenna. The tag transmits data when triggered by an electromagnetic pulse from the reader. This technology is used widely in many industries, for example with tracking inventory goods, personnel tracking and identification, and restricted area access. Non-contact switches with this technology are highly tamper-proof as they cannot be manipulated, providing a higher level of security.