Siemens Sinamics S120 Function Manual page 64

Description of Safety Integrated functions
4.1 Safety Integrated basic functions
Enabling the "Safe Torque Off" function
The "Safe Torque Off" function is enabled via parameter p9601:
● STO for the Safety Integrated Basic Functions:
– p9601 = 1 hex (Basic Functions via onboard terminals)
– p9601 = 8 hex (Basic Functions via PROFIsafe)
– p9601 = 9 hex (Basic Functions via PROFIsafe and onboard terminals)
– p9601 = 40 hex (basic functions via TM54F)
– p9601 = 41 hex (basic functions via TM54F and onboard terminals)
● STO in the Safety Integrated Extended Functions (EF):
– p9601 = 4 hex (EF via TM54F)
– p9601 = 5 hex (EF via TM54F and basic functions via onboard terminals)
– p9601 = C hex (EF via PROFIsafe)
– p9601 = D hex (EF via PROFIsafe via onboard terminals)
– p9601 = 25 hex (EF without selection and basic functions via onboard terminals)
S electing/deselecting " Safe Torque Off"
The following is executed when "Safe Torque Off" is selected:
● Each monitoring channel triggers safe pulse suppression via its switch-off signal path.
● A motor holding brake is closed (if connected and configured).
Deselecting "Safe Torque Off" represents an internal safety acknowledgment. The following
is executed if the cause of the fault has been removed:
● Each monitoring channel cancels safe pulse suppression via its switch-off signal path.
● The Safety requirement "Close motor holding brake" is canceled.
● Any pending STOP F or STOP A commands are canceled (see r9772).
● The messages in the fault memory must also be reset using the general acknowledgment
mechanism.
Not e
No mes sage for s election/deselection within the t olerance time (p9650)
If "Safe Torque Off" is selected and deselected through one channel within the tolerance
time p9650, the pulses are suppressed without a message being output.
However, if you want a message to be displayed, then you must reconfigure N01620 as
an alarm or fault using p2118 and p2119.
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Function Manual, (FHS), 07/2016, 6SL3097-4AR00-0BP6
Safety Integrated