Safe Torque Off (Sto) - Siemens SINAMICS S120 Function Manual

● Before commissioning the safety functions, we recommend that the motor data are
identified at standstill and a rotating measurement is carried out.
● For the basic commissioning, i.e. before the safety commissioning, the closed-loop
control should be optimally set. The following effects should be avoided:
- speed overshoots
- current peaks and/or discontinuous/unsteady current actual value over time
- voltage peaks and/or discontinuous/unsteady voltage actual value over time
- the lowest possible amount of noise in the current and voltage
Safety Integrated Extended Functions without encoder for Control Unit Adapter CUA31 and CUA32
In the case of the Control Unit Adapters CUA31 and CUA32, the Safety Integrated Extended
Functions without encoder are available as follows:
Control
Unit
Adapter
CUA31
CUA32
4.2.3

Safe Torque Off (STO)

For the control options and the functionality for "Safe Torque Off" (STO), see Section "Safe
Torque Off (STO) (Page 70)".
Safety Integrated
Function Manual, 12/2018, 6SL3097-5AR00-0BP1
Article number
6SL3040-0PA01-0AA1
6SL3040-0PA01-0AA0
Description of Safety Integrated functions
4.2 Safety Integrated Extended Functions
Safety Integrated without encoder
Not available for
Version (function states)
A, B and C
Version (function states)
A and B
Available for
Version D or newer
Version C or newer
97