Siemens SINAMICS G120 Operating Instructions Manual page 205

5. Click on the button
6. Deactivate the regular shutdown path test when exiting the STO function.
Test periods to monitor the shutdown paths
A timer monitors the execution of the shutdown path test. The monitoring time (P9659) can
be extended up to a maximum of one year. When the timer has expired, this is signaled via
status word r9772, bit 15. A higher-level controller must monitor this bit to ensure that the
STO safety function is tested on a regular basis.
Figure 5-48
Note
If you have deactivated the regular shutdown path test, before the test period expires, the
inverter must be switched off once and switched-on again.
Transferring the safety-relevant parameters
1. Click on the button
2. If the default password has not been changed, you are prompted to change it.
3. In the following dialog box, confirm the checksums of the safety-related parameters. This
CU240S and CU240E Control Units, FW 3.2
Operating Instructions, 03/2009, A5E02440075B AA
on the lower edge of the STARTER screen and enter the safety password. The default
password is '12345'.
The inverter outputs alarm A1698 to signal that safety settings are currently being
changed. Further, the following LEDs flash on the Control Unit: RDY, ES, STO, SS1 and
SLS
Test period for shutdown paths
concludes the process of changing the safety settings.
to accept all of the settings that you have made.
Functions
5.12 Safety functions
205