Why Choose the ABB 2TLA020072R0600 URAX-E1 Safe Input?
The ABB 2TLA020072R0600, designated URAX-E1, is a safe input AS-i slave module for two-hand control devices. Identified by ABB reference 20-072-06 and classified within the Safety PLC product group, it is specifically designed for two-hand control applications according to EN 574 Type IIIC.
The URAX-E1 provides two monitored inputs for each hand, comprising one normally closed and one normally open contact channel per hand. For safe activation, all four inputs must be enabled within 0.5 s. The module continuously monitors the input conditions and, following deactivation, requires all four inputs to return to their inactive states before another safe activation can occur.
Powered directly from the yellow AS-i cable at a nominal 30 V DC, the URAX-E1 combines AS-Interface connectivity with a rugged IP67 enclosure for decentralised machine installation. Its safety architecture supports applications up to SIL 3 and PL e / Category 4 when correctly incorporated into the complete safety system.
Key Advantages
- Purpose-designed AS-i safe input slave for two-hand control devices.
- Designed for two-hand controls according to EN 574 Type IIIC.
- Four monitored contact inputs provide two-channel monitoring for each hand.
- Requires simultaneous activation within 0.5 s for safe operation.
- Supports safety applications up to SIL 3 and PL e / Category 4.
- IP67 enclosure enables decentralised installation close to machinery.
Key Features
- ABB URAX-E1 safe input.
- ABB order code 2TLA020072R0600.
- Safe AS-i slave for two-hand control devices.
- Two inputs per hand: one NC and one NO contact.
- All four inputs must be activated within 0.5 s.
- Monitors all input channels and requires complete release before restart.
- AS-i profile S-0.B.0.
- Factory-set AS-i slave address 0.
- 12 ms switch-off reaction time, excluding external devices.
- Yellow and black IP67 industrial enclosure.
Dedicated Monitoring for Two-Hand Safety Controls
The ABB URAX-E1 is designed specifically for machinery where an operator must actuate a two-hand control before a hazardous movement can begin. Each hand-control device is monitored through separate normally open and normally closed contacts. All four input conditions must become valid within 0.5 s before the URAX-E1 generates its safety code, helping ensure that the two controls are intentionally operated together.
If the URAX-E1 is deactivated and stops generating its safety code, all four monitored inputs must first return to their inactive conditions before another activation is accepted. This monitored release-and-reactivation sequence supports the anti-tie-down and synchronisation requirements associated with two-hand machine-control applications.
Typical Applications
- Industrial two-hand control stations.
- Press and forming machinery.
- Cutting and processing machines requiring two-hand initiation.
- Assembly machinery with hazardous operating cycles.
- AS-i Safety at Work installations.
- Decentralised machine-safety systems requiring monitored two-hand controls.
