4. Case
● Situation
● All Safety Integrated functions are deselected.
● After this the drive enable must be given by a positive edge at OFF1.
● In this case, the motor is not started safely.
When acknowledging SDI with STOP C, you must maintain the following sequence:
1. Correct the incorrect setpoint input.
2. Deselect SDI.
While the safety STOP is active, this ensures that the motor cannot travel in the direction
that has not been enabled while the SDI function is deselected.
3. Select SDI again.
The SDI limits are then set again.
4. Cancel the safety STOP as a result of "safe acknowledgment".
4.12.1.3 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 static active)
– p9512.13 = 1 (SDI negative static active)
● The stop response is parameterized with p9566[0].
Safety functions integrated in the drive
4.12 SDI
Safety Integrated (with SINAMICS S120)
158 Commissioning Manual, 02/2020, A5E46305916B AB
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