Safe Direction Without Selection - Siemens SINAMICS S120 Function Manual

4.2.10.3

Safe Direction without selection

Differences between Safe Direction with and without selection
● As an alternative to controlling via terminals and/or PROFIsafe, there is also the option of
parameterizing SDI without selection. In this case, SDI will be permanently active after
POWER ON (with encoder) or will be active after switch-on (without encoder).
● The "SDI without selection" function is activated as follows:
– p9512.12 = 1 (SDI positive (CU) statically selected)
– p9512.13 = 1 (SDI negative (CU) statically selected)
● The stop response is parameterized with p9566[0].
Switching the motor on and off (without encoder)
The time response and diagnostic options are as follows in this SDI version:
Figure 4-18
"SDI without selection" behaves as follows when switching off and switching on again:
● After switch-off, the motor behaves in accordance with the canceled signal (OFF1, OFF2
or OFF3).
● STO (≙ safe pulse cancellation) becomes active after the standstill limit is undershot.
● After the ON command, the converter cancels the "safe pulse suppression" state and the
start procedure is initiated.
● If the minimum current has not been reached after 5 seconds, the converter returns to the
"safe pulse suppression" state and initiates the safety message C01711(1041).
Safety Integrated
Function Manual, 12/2018, 6SL3097-5AR00-0BP1
Time response of SDI without selection (example: Switching the motor on and off
(without encoder))
Description of Safety Integrated functions
4.2 Safety Integrated Extended Functions
133