Bircher S-Line safety edges us a small and compact range of profiles that are ideal for smaller door and barrier applications. The S-Line safety edges have three different mounting methods - self-adhesive, C-channel and side clip designs. To specify the safety edge you require, start by selecting the rubber profile followed by the termination - 8k2 resistor and cable or two cable version - then the length of the safety edge between 300 mm and 5000 mm.
When specifying the Bircher S-Line safety edge, please note the overtravel figure shown below and ensure it is suitable for your application.
Safety edges are manufactured in two formats a “pass through” or “link” version with two cables and the “end-of-line” version with 8k2 terminating resistors. Up to four edges (as recommended by Bircher) can be are wired together in series with each other with the 8k2 version being the last link in the chain. The switching unit monitors the resistance of the series of safety edges, if any of the edges in the chain are compressed this will cause the safety relays on the switching unit to open, also if any of the cables in the circuit are damaged the unit will show this as a fault and the safety relays will be opened.