Siemens SIRIUS ACT 3SU1 - Two-Hand Operation to SIL 3 or PL E with a Modular Safety System

Application examples
16.2 Examples of two-hand operation console applications
SIRIUS ACT 3SU1 pushbuttons and signaling devices
572 System Manual, 08/2018, A5E03457306020A/RS-AK/010
16.2.3
Two-hand operation to SIL 3 or PL e with a Modular Safety System
Application
Two-hand operation consoles comprise two pushbuttons (e.g. mushroom pushbuttons or
sensor switches) that must be pressed simultaneously to operate a machine. This prevents
the operator from reaching into the danger zone during operation.
Configuration
Figure 16-4 Two-hand operation to SIL 3 or PL e with a Modular Safety System