Status for "Safe Torque Off"
You can check the status in the SI diagnostics screens via "MENU SELECT > Diagnostics >
Menu forward key > Safety".
Internal armature short-circuit with the "Safe Torque Off" function
The function "internal armature short-circuit" can be configured together with the "STO"
function.
The "STO" safety function has the higher priority when simultaneously selected. If the "STO"
function is initiated, then an activated "internal armature short-circuit" is disabled.
Function diagrams (see SINAMICS S120/S150 List Manual)
● 2810 SI Basic Functions - STO (Safe Torque Off), SS1 (Safe Stop 1)
● 2811 SI Basic Functions - STO (Safe Torque Off), safe pulse cancellation
Overview of important parameters (see SINAMICS S120/S150 List Manual)
● p9601 SI enable functions integrated in the drive (Control Unit)
● r9720 CO/BO: SI Motion drive-integrated control signals
● r9722 CO/BO: SI Motion drive-integrated status signals
● r9772 CO/BO: SI Status (Control Unit)
● r9773 CO/BO: SI Status (Control Unit + Motor Module)
● r9774 CO/BO: SI Status (group STO)
Safety functions integrated in the drive
4.4 STO (Basic/Extended)
Safety Integrated (with SINAMICS S120)
108 Commissioning Manual, 02/2020, A5E46305916B AB
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