Safe Direction (Sdi); Safe Direction With Encoder - Siemens Sinamics S110 Function Manual

Safety Integrated Functions
8.5 Safety Integrated Extended Functions
8.5.10

Safe Direction (SDI)

8.5.10.1

Safe Direction with encoder

The Safe Direction function (SDI) allows reliable monitoring of the direction of motion of the
drive. If this function is activated, the drive can only move in the enabled, safe direction.
Functional principle
After SDI has been selected via terminals or PROFIsafe, the delay time p9365/p9565 is
started. During this period, you have the option of ensuring that the drive is moving in the
enabled (safe) direction. After this, the Safe Direction function is active and the direction of
motion is monitored. If the drive now moves in the non-safe direction, messages
C01716/C30716 are output and the stop response defined in p9366/p9566 is initiated.
Features
● Parameters r9720.12/r9720.13 display whether the SDI function is selected.
● Parameters rr9722.12/r9722.13 display whether the SDI function is active.
● Parameters p9364/p9564 are used to set the tolerance within which a movement in a
● Parameters p9366/p9566 define the stop response in the case of a fault.
● Parameters p10030/p10130 define the terminals for SDI.
● Parameter p10042 is used to define whether the SDI status in the status display of the
● If "SDI positive" is selected, the following value is set automatically:
● If "SDI "negative" is selected, the following value is set automatically:
● The absolute setpoint speed limit is available in r9733[2].
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non-enabled (non-safe) direction is tolerated.
F-DO is taken into account.
– r9733[1] = 0 (setpoint limitation negative)
– r9733[0] = 0 (setpoint limitation positive)
Function Manual, 01/2011, 6SL3097-4AB10-0BP3
Function Manual