Extended Braking Control - Siemens SINAMICS S150 Operating Instructions Manual

9.4.3

Extended braking control

Description
The "extended braking control" function module allows complex braking control for motor
holding brakes and operational brakes.
The brake is controlled as follows (the sequence reflects the priority):
● Via parameter p1215
● Via binector parameters p1219[0..3] and p0855
● Via zero speed detection
● Via a connector interconnection threshold value
Commissioning
The "extended braking control" function module can be activated by running the
commissioning Wizard. Parameter r0108.14 indicates whether the function module has been
activated.
Parameter p1215 must be set to "3" and the brake controlled via a digital output on customer
terminal strip TM31.
Function diagram
FP 2704
FP 2707
FP 2711
Example 1: Starting against applied brake
When the device is switched on, the setpoint is enabled immediately (if other enable signals
are issued), even if the brake has not yet been released (p1152 = 1). The factory setting
p1152 = r0899.15 must be separated here. The drive starts by generating a torque against
the applied brake. The brake is not released until the motor torque or motor current (p1220)
has exceeded braking threshold 1 (p1221).
This configuration is used, for example, when the drive is connected to a belt that is under
tension (loop accumulator in the steel industry).
Drive converter cabinet units
Operating Instructions, 07/07, A5E00288214A
Zero speed detection
Release/apply brake
Signal outputs
Functions, monitoring, and protective functions
9.4 Extended functions
349