2TLA020072R0200 ABB 20-072-02 URAX-B1R Safe Input

Why Choose the ABB 2TLA020072R0200 URAX-B1R Safe Input?

The ABB 2TLA020072R0200, type 20-072-02 / URAX-B1R, is a safe input slave for AS-i bus within the ABB Safety PLC product group. It is designed to connect ABB dynamic safety devices, including Eden sensors and Tina components, to an AS-Interface safety system while providing additional non-safe outputs for auxiliary control and indication functions.

The URAX-B1R provides one safe input for dynamic sensors, three non-safe outputs and an input for local reset. The dynamic safety circuit allows compatible sensors to be connected in series, with support for up to 10 compatible Eden sensors and a total sensor cable length of less than 30 m.

Designed for industrial machine-safety installations, the URAX-B1R combines an AS-i supply with a separate 24 V DC auxiliary supply for its non-safe outputs. Its compact yellow-and-black enclosure provides IP67 protection and operates across an ambient temperature range of -25 to +65 °C, making it suitable for decentralised safety-device connection on machinery and automated equipment.

Key Advantages

• Safe AS-i input slave for ABB dynamic safety devices.
• Provides one safe input for dynamic sensors.
• Includes three non-safe outputs for auxiliary control or indication.
• Dedicated local reset input supports automatic or manual reset configuration.
• Supports up to 10 compatible Eden sensors in the dynamic safety loop.
• Suitable for ABB Eden, Tina and other compatible DYNlink safety devices.
• IP67 enclosure protection supports installation in demanding industrial environments.
• Safety capability up to PL e / Category 4 and SIL 3 when correctly incorporated into the safety system.

Key Features

• ABB Safety PLC product group.
• URAX-B1R model designation.
• 20-072-02 type designation.
• ABB order code 2TLA020072R0200.
• AS-i safe input slave.
• 1 safe dynamic input.
• 3 non-safe outputs.
• Input for local reset.
• Supports automatic or manual reset configuration.
• AS-i profile S-7.B.E.
• Slave address at delivery: 0.
• Separate 24 V DC auxiliary supply.
• Maximum of 10 Eden sensors in the compatible dynamic sensor chain.
• IP67 enclosure protection.

Reliable Dynamic Safety Input Integration with AS-i

ABB's dynamic safety-signal principle uses a single-channel dynamic signal that is inverted by each compatible safety device in the chain. This enables faults such as short circuits and defective sensors to be detected while allowing multiple compatible devices to be connected in series. The URAX-B1R generates and evaluates this dynamic signal and can be configured for the odd or even number of sensors connected to the safety loop.

Alongside its safe input functionality, the URAX-B1R provides three non-safe outputs controlled from the AS-i master. These outputs can be used for auxiliary functions such as indicators or compatible machine-control devices, while the dedicated reset input can be configured for either automatic or manual local reset. This combination makes the URAX-B1R a versatile decentralised interface between ABB dynamic safety devices and an AS-i safety network.

Typical Applications

• ABB Pluto AS-i Safety PLC installations.
• AS-Interface Safety at Work systems.
• ABB Eden dynamic safety sensor connections.
• ABB Tina DYNlink safety-device integration.
• Machine guard and access-point monitoring.
• Safety systems requiring local reset functionality.
• Applications requiring auxiliary non-safe control outputs.
• Conveyor and material-handling machinery.
• Automated production and processing equipment.
• OEM machine building and functional-safety systems.