Handling the Mobile Panel 
  4.4 Pressing the emergency stop / stop button 
Mobile Panels 2nd Generation 
Operating Instructions, 09/2018, A5E33876626-AC 
83 
 
Pressing the emergency stop / stop button 
The emergency stop / stop button on the HMI device is an optional operator control. The 
emergency stop / stop button is designed with two circuits and enables a safety-related 
emergency stop or stop of the fail-safe automation system. 
 
  Whether the emergency stop / stop button has the "emergency stop" or "stop" function 
depends on the configuration of the plant and the parameter settings of the HMI device. 
  If the emergency stop / stop button is configured and wired for the "emergency stop" 
function, the emergency stop / stop button lights up as soon as the "emergency stop" 
function becomes available. 
  An emergency stop or stop can only be triggered when the fail-safe HMI device is 
attached to a connection box. 
 
Emergency stop / stop button 
For a hardwired F-system: 
●  When a SIRIUS safety relay is used, the emergency stop / stop button meets the 
requirements of Safety Category 3 in accordance with EN ISO 13849--1. 
●  When you unplug the connecting cable from the connection box, the emergency stop 
circuit is either opened or automatically bypassed, depending on the connection box 
used. 
For a PROFIsafe-based F-system: The emergency stop / stop button triggers the configured 
function. 
●  The HMI device is connected to a correctly installed connection box. 
●  An operator control for the controlled hot restart of the plant is configured. 
●  For a PROFIsafe-based F-system only: A project for PROFIsafe communication has 
started.