Siemens SINAMICS G130 Manual page 66

Safety Integrated Basic Functions
5.1 Safe Torque Off (STO)
If two power transistors simultaneously fail in the power unit (one in the upper and one in
the lower bridge), then this can cause brief momentary movement.
The maximum movement can be:
Synchronous rotary motors: Max. movement = 180 ° / No. of pole pairs
Synchronous linear motors: Max. movement = pole width
● The status of the "Safe Torque Off" function is displayed using parameters.
Enabling the "Safe Torque Off" function
The "Safe Torque Off" function is enabled via the following parameters:
● STO via terminals on the Control Unit and the power unit
● STO via PROFIsafe:
● STO via PROFIsafe and terminals:
● STO via TM54F (only with "Extended Functions" option):
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CAUTION
p9601.0 = 1, p9801.0 = 1
– p9601.0 = 0, p9801.0 = 0
– Basic Functions: p9601.2 = 0, p9801.2 = 0
Extended Functions: p9601.2 = 1, p9801.2 = 1
– p9601.3 = 1, p9801.3 = 1
– p9601.0 = 1, p9801.0 = 1
– Basic Functions: p9601.2 = 0, p9801.2 = 0
Extended Functions: p9601.2 = 1, p9801.2 = 1
– p9601.3 = 1, p9801.3 = 1
– p9601.2 = 1, p9801.2 = 1
– p9601.3 = 0, p9801.3 = 0
Safety Integrated
Function Manual, 05/2010, A5E03264275A