Siemens SINAMICS S120 - Opening the Brake

Commissioning
4.11 Configuring brake control
Commissioning with Startdrive
Commissioning Manual, 11/2017, 6SL3097-4AA10-0BP1
301
4.11.3.3
Opening the brake
Parameterizing the "Open brake" command
Figure 4-124 Extended brake control: Open brake
To parameterize for extended brake control the command for the forced opening of the
brake, proceed as follows:
1. Interconnect the "Open threshold signal source" (p1220) signal sink for the "Open brake"
command.
2. Enter the threshold for the "Open brake" command in the "Open threshold" (p1221) field.
3. Enter the monitoring time for standstill detection in the "Monitoring time" (p1227) field.
When braking with OFF1 or OFF3, standstill is detected after this time has expired, after
the set speed has fallen below p1226.
4. Interconnect the "Open brake" (p1218[0]) signal sink for conditional opening operation of
the motor holding brake and also an AND operation with input 1.
AND/OR
Interconnect the "Open brake" (p1218[1]) signal sink for conditional opening operation of
the motor holding brake and an AND operation with input 2.
5. Interconnect the "Unconditionally open holding brake" (p0855) signal sink for the
command to open the brake unconditionally.
The brake opens when this signal or the internal signal "Open brake" has the value "1".
Note
The "Unconditionally close holding brake" signal has a higher priority than the
"Unconditionally open holding brake" signal.