2TLA020072R0500 ABB 20-072-05 URAX-D1R Safe Input

Why Choose the ABB 2TLA020072R0500 URAX-D1R Safe Input?

The ABB 2TLA020072R0500, type 20-072-05 / URAX-D1R, is an AS-i safe input slave designed for safety devices with dual-channel solid-state OSSD transistor outputs. It provides one safe dual-channel input, three non-safe outputs and an input for local reset, making it a versatile interface for integrating electronic safety devices into an AS-Interface safety system.

The URAX-D1R is particularly suited to safety devices such as safety light curtains, light beams and laser scanners that provide two OSSD safety outputs. The module can be configured to detect test pulses from the connected safety device, providing additional monitoring of the expected OSSD behaviour. The connected safety device itself must be capable of detecting short circuits between its channels and short circuits to the supply voltage.

The module uses the AS-i network supply together with a separate 24 V DC auxiliary supply for the connected device and non-safe outputs. Its compact yellow-and-black enclosure provides IP67 protection and operates from -25 to +65 °C, making it suitable for decentralised safety installations on industrial machinery.

Key Advantages

• Dedicated AS-i safe input slave for dual-channel OSSD safety devices.
• Provides one safe dual-channel input for transistor safety outputs.
• Includes three non-safe outputs for auxiliary control and indication functions.
• Dedicated local reset input supports manual or automatic reset configurations.
• Suitable for electronic safety devices such as light curtains, light beams and scanners.
• Configurable monitoring for OSSD test pulses.
• Separate 24 V DC auxiliary supply supports connected equipment and outputs.
• IP67 protection supports decentralised installation in industrial environments.
• Supports safety functions up to PL e / Category 4 and SIL 3 when correctly incorporated into the complete safety system.

Key Features

• ABB Safety PLC product group.
• URAX-D1R model designation.
• 20-072-05 type designation.
• ABB order code 2TLA020072R0500.
• 1 safe dual-channel input for OSSD transistor outputs.
• 3 non-safe outputs.
• Input for local reset.
• Configurable automatic or manual reset.
• Configurable OSSD test-pulse detection.
• AS-i profile S-0.B.0.
• Slave address at delivery: 0.
• 30 V DC nominal AS-i supply.
• 24 V DC auxiliary supply.
• 12 ms module off reaction time.
• IP67 enclosure protection.

Reliable OSSD Safety Device Integration with AS-i

Many electronic safety devices use two independently monitored OSSD transistor outputs rather than conventional relay contacts. The ABB URAX-D1R provides the dedicated interface required to connect these dual-channel electronic safety outputs to an AS-i safety network, making it suitable for devices such as safety light curtains, photoelectric safety beams and safety laser scanners.

The URAX-D1R can monitor whether expected test pulses are being transmitted by the connected safety device and also provides three non-safe outputs plus a configurable local reset input. With a 12 ms module off reaction time, IP67 construction and support for safety functions up to PL e / Category 4 and SIL 3, it provides a compact decentralised interface for electronic machine-safety devices when the complete safety function is correctly designed and validated.

Typical Applications

• ABB Pluto AS-i Safety PLC installations.
• AS-Interface Safety at Work systems.
• Safety light curtains with dual OSSD outputs.
• Safety light-beam devices.
• Safety laser scanners.
• Electronic presence-sensing safety devices.
• Machine access and hazardous-area monitoring.
• Conveyor and material-handling systems.
• Automated production and processing machinery.
• OEM machine building and functional-safety systems.