Phoenix Contact PSR-URM4L safety contact extension device
The PSR-URM4L contact extension device from Phoenix Contact is highly suited for light grid applications. It allows users to efficiently process safety-related OSSD signals of a light grid as floating contacts, therefore supporting safety-relevant circuits up to PLe.
The contact extension device is specifically designed for use with electro-sensitive protective equipment (ESPE) such as light grids. Such systems normally include switched-mode OSSD signals that make it possible to detect cross-circuits in the cabling. The relay is resistant to test pulses generated by the CFSE. This allows for the implementation of applications that comply with PLe or SIL3 without the need to reconnect the device to the external device monitoring circuit.
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