Siemens SINAMICS S120 Commissioning Manual page 261

Example:
1. Enter a delay time in ms in the "Delay time for selection of SDI -> SDI active" (p9565)
field.
2. Enter a monitoring tolerance in mm in the "Monitoring tolerance" (p9564) field.
3. Select the required stop response in the "Selection" (p9566) drop-down list.
4. Click the
response.
Make the required configuration.
5. Click "Save project" in the toolbar to save the changes in the project.
Differences for SDI without encoder
● For Safe Direction without encoder, after pulse suppression the drive is unable to
determine the current velocity. For this operating state, the behavior is defined with
parameter p9509.8:
– p9509.8 = 1 The status signal displays "inactive".
– p9509.8 = 0 The status signal displays "active", and the drive takes on the STO state.
● Due to the less precise position recognition, "Safe Direction without encoder" requires a
larger tolerance (p9564) compared with the function with encoder.
Note
No detection of a change in direction by means of p1820 or p1821
If the direction of rotation is reversed via p1820 or p1821, then safe monitoring is still
possible: However, in this case, the setpoint limitation r9733 is calculated with the wrong
direction of rotation. A reversal of the rotational direction with p1820 or p1821 therefore
does not make sense.
Commissioning with Startdrive
Commissioning Manual, 11/2017, 6SL3097-4AA10-0BP1
icon to open an additional configuration screen form for the set stop
Commissioning
4.10 Safety Integrated commissioning
261