Extended Brake Control; Basics - Siemens SINAMICS S120 Commissioning Manual

1. Enter the speed threshold at which "Standstill" is identified when the threshold is
undershot in the "Threshold" (p1226) field.
When this threshold is undershot, the brake control is started and the closing time in
p1217 awaited. The pulses are then suppressed.
2. Enter the delay time for pulse suppression in the "Delay time" (p1228) field.
The pulses are suppressed after OFF1 or OFF3 when at least one of the following
conditions has been satisfied:
– The actual speed value falls below the threshold in p1226 and the time started in
– The speed setpoint falls below the threshold in p1226 and the time started in p1227
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. The brake control is then started, the closing time
in p1217 awaited and the pulses suppressed.
4. Interconnect the "Unconditionally close brake" (p0858) signal sink for the command to
unconditionally close the brake.
Note
The "Unconditionally close holding brake" signal has a higher priority than the
"Unconditionally open holding brake" signal.
4.11.3

Extended brake control

4.11.3.1

Basics

The "Extended brake control" allows complex brake controls, such as for motor holding
brakes and service brakes. The brake is controlled in the following manner. The order
represents the priority:
● Via parameter p1215
● Via binectors p1219[0...3] and p0855
● Via standstill detection
● Via the connector connection threshold
Precondition
● The "Extended brake control" function module is activated (see Chapter "Function
modules (Page 172)").
Commissioning with Startdrive
Commissioning Manual, 12/2018, 6SL3097-5AA10-0BP0
p1228 has expired.
has expired.
Commissioning
4.11 Configuring brake control
227