Design and mode of operation:
Output expanders with adjustable delay fulfil Stop Category 1 to EN 60204-1 and are used in order to securely switch off variable speed drives, for example. Depending on the external circuit arrangement, it is possible to secure the guard device up to Control Category 4 to EN 954-1. SRB range output expanders operate using conventional relay technology. The units have redunant circuit internal design. They are equipped with safety relays with monitored positive-guided contacts. The enabling paths comprise the relay contacts wired in series.

Features:


• Expander module for contact expansion


• 4 enabling paths, Stop 0


• 2 indication contacts (NC)


• LED to show switching conditions


• Control category 4 to EN 954-1 depending on the used safety relay module


• Plug-in terminals