Resetting The Latching Mechanism; Cable-Operated Switches With Emergency Stop Function And Rotate-To-Unlatch Mechanism; Positive Opening Ensures Safety - Siemens SIRIUS Configuration Manual

4.7

Resetting the latching mechanism

The latching device (incl. EMERGENCY STOP switch) can be reset as follows:
• Pretension the wire (target pretension)
• Pressing the pushbutton or turning the key
With a cable-operated switch, the operator pulls a plastic-sheathed steel wire.
4.8 Cable-operated switches with EMERGENCY STOP function and
rotate-to-unlatch mechanism
3SE7141-1EG10, version with yellow cover 3SE7141-1EG10-0CA1
If the arrow in the status display is pointing to the center position (= correct wire tension),
the blue lever can be turned from "0" to "1", thus activating the switch.
In the current design, the operator can intervene using the EMERGENCY STOP button. This
means that the system can be deactivated centrally. The blue lever jumps back to "0".
The cable-operated switch can be reactivated using the blue lever as long as the correct wire
pre-tensioning is maintained. The EMERGENCY STOP button need not be unlatched for this
purpose.
4.9

Positive opening ensures safety

The NC contacts are positive opening contacts, i.e. the contacts open and interrupt the circuit
as soon as a wire breaks or is pulled. Furthermore, the cable-operated switches can be
adjusted to within a millimeter, a process that is made easier by a position indicator on the
switch itself.
Cable-operated switches and foot switches
Configuration Manual, 09/2020, A5E43902195002A/RS-AA/001
Cable-operated switches
4.7 Resetting the latching mechanism
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