Siemens SINAMICS S120 Commissioning Manual page 304

Commissioning
4.11 Configuring brake control
Configuring standstill detection
The standstill detection is configured in a separate dialog. You can decide for the standstill
detection whether a deceleration ramp for the monitoring time is to be used in addition. In the
latter case, the brake, however, can close for a turning motor.
Figure 4-126 Extended brake control: Close brake standstill detection
1. Click "Standstill detection" on the "Close brake" screen form.
A setting dialog with the same name opens. The "Deceleration ramp monitoring time"
option is initialized with the "ON" option.
2. Optional: Select the "OFF" option in the "Deceleration ramp monitoring time" drop-down
list. In this case, the input field for the monitoring time is hidden.
3. Interconnect the "Standstill detection threshold" (p1225) signal sink for the standstill
detection.
4. Enter the speed threshold for standstill detection in the "Threshold" (p1226[0]) field.
5. Enter the delay time for pulse suppression in the "Delay time" (p1228) field.
6. Enter the monitoring time for standstill detection in the "Monitoring time" (p1227) field.
This step is omitted if the deceleration ramp has been switched off in step 2.
7. Click "OK" to confirm the entries.
The dialog closes.
Configuring disable standstill detection
If you want to disable standstill detection, proceed as follows:
1. Select the "ON" entry in the "Disable standstill detection" drop-down list.
2. Enter the deceleration time for closing the brake at standstill in the "Disable standstill
detection" (p1276) input field below the graphic.
304
Commissioning with Startdrive
Commissioning Manual, 11/2017, 6SL3097-4AA10-0BP1