Wiring Examples For Enabling Switch And Stop Button - Siemens SIMATIC HMI Mobile Panel 277 RO Operating Instructions Manual

Technical specifications

10.5 Wiring Examples for Enabling Switch and STOP Button

10.5 Wiring Examples for Enabling Switch and STOP Button
Introduction
This chapter contains connection examples for enabling and STOP buttons corresponding to
Category 3 PL d in accordance with EN ISO 13849-1:2008/AC:2009.
Note
To ensure Category 3 PL d in accordance with EN ISO 13849-1:2008/AC:2009, be sure to
follow the operating instructions for the monitoring device being used.
The monitoring devices shown in the following examples satisfy Category 4 PL e in
accordance with EN ISO 13849-1:2008/AC:2009.
The monitoring device and downstream components should be taken into consideration
when calculating the overall "Stop" and "Enabling" safety function.
Connection – Enabling button with evaluation device
The following figure shows the connection of an evaluating device to the enabling button of
the mobile panel.
All contacts of the safety relay (contactor) KA and KB are fitted with positively-driven
contacts in accordance with EN 50205:2002.
142
Operating Instructions, 10/2015, A5E36824256-AA
Mobile Panel 277 RO