2TLA020072R0400 ABB 20-072-04 URAX-C1R Safe Input

Why Choose the ABB 2TLA020072R0400 URAX-C1R Safe Input?

The ABB 2TLA020072R0400, type 20-072-04 / URAX-C1R, is an AS-i safe input slave within the ABB Safety PLC product group. It provides two safe inputs for safety devices with dual-channel contacts together with a dedicated input for local reset, enabling conventional machine-safety devices to be integrated into an AS-Interface safety system.

The URAX-C1R is designed for safety devices with two potential-free contacts in NO+NO or NO+NC configurations. This makes it suitable for devices such as emergency-stop push-buttons and electromechanical safety switches where redundant contact channels must be monitored by the safety system.

Powered directly from the AS-i yellow cable, the module operates from a nominal 30 V DC AS-i supply and consumes less than 150 mA. Its compact yellow-and-black enclosure provides IP67 protection, while the local-reset functionality makes the URAX-C1R particularly useful for decentralised safety installations where a reset device is required close to the protected machine area.

Key Advantages

• AS-i safe input slave for dual-channel machine-safety devices.
• Provides two safe inputs for devices with potential-free contacts.
• Supports both NO+NO and NO+NC contact configurations.
• Dedicated local reset input differentiates the C1R from the standard URAX-C1.
• Suitable for emergency-stop push-buttons, guard switches and other compatible dual-channel safety devices.
• Powered directly from the AS-i yellow cable.
• Fast 12 ms off reaction time for the URAX module itself.
• Robust IP67 enclosure for decentralised industrial installations.
• 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-C1R model designation.
• 20-072-04 type designation.
• ABB order code 2TLA020072R0400.
• 2 safe inputs for devices with dual-channel contacts.
• Supports NO+NO or NO+NC potential-free contacts.
• Dedicated local reset input.
• AS-i profile S-0.B.0.
• Slave address at delivery: 0.
• Jack-plug addressing.
• Powered from the AS-i yellow cable.
• 30 V DC nominal AS-i supply.
• IP67 enclosure protection.

Reliable Dual-Channel Safety Input Integration with Local Reset

Dual-channel emergency stops and safety switches use redundant contacts so that the safety-control system can detect faults that could otherwise prevent a protective function from operating correctly. The ABB URAX-C1R provides the interface required to connect these devices to an AS-i safety network, accepting safety devices with either NO+NO or NO+NC potential-free contacts.

The additional local reset input allows a reset device to be incorporated close to the machine or guarded area where required by the safety design. Combined with its direct AS-i supply, 12 ms module reaction time and IP67 enclosure, the URAX-C1R provides a compact decentralised interface for safety applications up to PL e / Category 4 and SIL 3 when the complete safety function is appropriately designed and validated.

Typical Applications

• ABB Pluto AS-i Safety PLC installations.
• AS-Interface Safety at Work systems.
• Dual-channel emergency-stop push-buttons.
• Guard switches with potential-free safety contacts.
• Safety devices using NO+NO contact arrangements.
• Safety devices using NO+NC contact arrangements.
• Machine areas requiring local safety reset.
• Conveyor and material-handling machinery.
• Automated production and processing equipment.
• OEM machine building and functional-safety systems.