Why Choose the ABB 2TLA020072R0300 URAX-C1 Safe Input?
The ABB 2TLA020072R0300, type 20-072-03 / URAX-C1, is a safe input slave for AS-i bus within the ABB Safety PLC product group. It provides two safe inputs for safety devices with dual-channel contacts, enabling conventional electromechanical safety devices to be integrated into an AS-Interface safety system.
The URAX-C1 is designed for safety devices with two potential-free contacts in either NO+NO or NO+NC configurations. Typical compatible devices include emergency-stop push-buttons and safety switches such as ABB Smile and MKey products, making the module a practical interface between conventional dual-channel safety contacts and an AS-i safety network.
Designed for decentralised industrial machine-safety installations, the URAX-C1 is powered directly from the AS-i yellow cable at 30 V DC and requires less than 150 mA. Its compact yellow-and-black enclosure provides IP67 protection and operates from -25 to +65 °C, supporting installation close to safety devices on machinery and automated equipment.
Key Advantages
- Safe AS-i input slave for dual-channel safety devices.
- Provides two safe inputs for devices with potential-free contacts.
- Supports NO+NO and NO+NC contact configurations.
- Suitable for emergency-stop buttons, safety switches and other compatible dual-channel devices.
- Compatible with safety devices such as ABB Smile and MKey.
- Powered directly from the AS-i yellow cable without a separate auxiliary supply.
- IP67 enclosure protection supports decentralised machine installation.
- 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-C1 model designation.
- 20-072-03 type designation.
- ABB order code 2TLA020072R0300.
- AS-i safe input slave.
- 2 safe inputs for devices with dual-channel contacts.
- Supports safety devices with NO+NO or NO+NC potential-free contacts.
- AS-i profile S-0.B.0.
- Slave address at delivery: 0.
- 30 V DC AS-i supply.
- Reaction time of 12 ms, excluding sensors and other peripheral components.
- IP67 enclosure protection.
- Compact yellow-and-black industrial housing.
Reliable Dual-Channel Safety Device Integration with AS-i
Many conventional machine-safety devices use two potential-free contacts to provide redundant switching channels. The ABB URAX-C1 provides the interface required to connect these dual-channel devices to an AS-i safety network, supporting both NO+NO and NO+NC contact arrangements and allowing devices such as emergency stops and guard switches to be incorporated into the safety-control architecture.
With its 12 ms off reaction time, direct AS-i power supply and IP67 enclosure, the URAX-C1 is well suited to decentralised machine installations. Its safety characteristics support applications up to PL e / Category 4 and SIL 3 when the complete safety function is correctly designed, configured and validated.
Typical Applications
- ABB Pluto AS-i Safety PLC installations.
- AS-Interface Safety at Work systems.
- Dual-channel emergency-stop push-buttons.
- Safety switches with potential-free contacts.
- ABB Smile emergency-stop devices.
- ABB MKey safety switches.
- Machine guard and access-point monitoring.
- Conveyor and material-handling machinery.
- Automated production and processing equipment.
- OEM machine building and functional-safety systems.
