The ABB Sentry USR22 Universal Safety Relay/Timer is a versatile and reliable solution for monitoring a wide range of safety devices. Equipped with 2NO+2 delayable NO relay outputs and powered by a +24VDC power supply, this device is designed for seamless integration with safety devices featuring contacts, OSSD outputs, two-hand devices, safety mats, and safety edges/bumpers. The relay offers a highly accurate timer function with a range of 0-999 seconds and an accuracy better than 1%, supporting OFF-delay, ON-delay, Time bypass, and Time reset functions.
A user-friendly display on the front panel aids in configuration and troubleshooting by showing error codes and logs, while a password protection feature ensures the security of custom configurations. Users can choose between manual or automatic reset options to suit their specific needs. The Sentry USR22 is part of a comprehensive range of safety relays that cater to various safety applications up to PLe / SIL3 standards.
With high output current capacity up to 6 A, the need for an intermediary contactor is often eliminated, enhancing efficiency. The multi-reset feature allows up to 10 safety relays to be connected to a single reset light-button, streamlining operations. Available with detachable push-in or screw terminals, the Sentry USR22 offers flexibility and ease of installation, with additional accessories like terminals and coding kits available for further customization.