Prerequisite For Sto Use; Commissioning Sto; Commissioning Tool; Protection Of The Settings From Unauthorized Changes - Siemens SINAMICS G120 Operating Instructions Manual

8.8.2

Prerequisite for STO use

In order to use the STO safety function, the machine manufacturer should have already
performed a risk assessment, e.g. in compliance with EN ISO 1050, "Safety of machinery -
Principles of risk assessment". The risk assessment must confirm that the inverter is
permitted for use in accordance with SIL 2 or PL d.
8.8.3

Commissioning STO

8.8.3.1

Commissioning tool

We strongly recommend that you commission the safety functions using the STARTER PC
tool.
If you use STARTER for commissioning, then you set the functions using the graphic screen
forms and you do not have to work with parameters. In this case, you can ignore the
parameter tables in the following sections.
Table 8- 36
Download
STARTER
(http://support.automation.siemens.com/WW/v
iew/en/10804985/130000)
8.8.3.2

Protection of the settings from unauthorized changes

The safety functions are protected against unauthorized changes by a password.
Table 8- 37
No.
p9761
p9762
p9763
Converter with the CU250S-2 Control Unit (vector)
Operating Instructions, 06/2013, FW V4.6, A5E31759476B AB
STARTER commissioning tool (PC software)
Parameter
Description
Entering a password (factory setting 0000 hex)
Permissible passwords lie in the range 1 ... FFFF FFFF.
New password
Confirm password
8.8 Safe Torque Off (STO) safety function
Order number
6SL3255-0AA00-2CA0
PC Connection Kit, includes STARTER DVD and
USB cable
Setting functions
303