Kiepe Elektrik SEG Operating Instructions Manual
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19Operating Instructions SEG3 Description3.2 FunctionPull-rope emergency stop switches, type SEG are elec-tro-mechanical switches designed to perform safetyfunctions in accordance with DIN EN ISO 13849-1. Thepull-rope emergency stop switches can be actuated intwo directions.The pull-rope emergency stop switch, type SEG is anemergency stop device that comes with at least twoswitching elements (5, 6) (see Fig. 3-2). At least one ofthe switching elements (5) has a positive opening con-tact.• The switching element (5) N/C contact is used forthe safety circuit connection.• The switching element (6)N/O contact is used for thecontrol circuit connection or for the optional signallamp connection (12) (see Figure 4-1, page 24).Switching elements (5, 6) are actuated simultaneouslyvia the cam roller (16).Emergency stopIn the home position (pull-rope emergency stop switchactive), reset lever (2) is in switch position "1" (see Fig. 3-3). The switching element contacts (5) N/C contact (safe-ty circuit) are closed, the switching element contacts (6)N/O contact (control circuit) are open.By actuating trigger lever (1), cam roller (16) jumps to theshut-off position. Reset lever (2) jumps from switch posi-tion "1" to switch position "0". Trigger lever (1) is discon-nected and can now move freely, so preventing any sub-sequent switching processes (locking function). Theswitching element contacts (5) N/C contact (safety cir-cuit) are open, the switching element contacts (6) N/Ocontacts (control circuit) are closed.If you are using pull-rope emergency stop switches withsignal lamp (12), the signal lamp comes on (12).Switch position ofreset lever (2)Switching elementN/C contact (5)Safety circuitN/O contact (6)Control circuit1 (pull-rope emer-gency stop switchactive)Closed Open0 (pull-rope emer-gency stop switchtriggered)Open ClosedTab. 3-1: Overview: function of the switching element |
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