8400 BaseLine D | Software Manual
Motor control (MCTRL)
DC-injection braking
100 L Firmware 03.00 - DMS EN 5.0 - 07/2009
5.6 DC-injection braking
DC-injection braking allows the drive to be quickly braked to a standstill without the need
to use an external brake resistor.
The braking current can be defined with code C036
.
The maximum braking torque to be generated by the DC braking current is approx.
20 ... 30 % of the rated motor torque. It is lower than that for braking in generator mode
with an external brake resistor.
Automatic DC-injection braking (Auto-DCB) improves the starting performance of the
motor during operation without speed feedback.
Overview of the relevant parameters
DC-injection braking can be carried out in two ways with different types of activation:
Manual DC-injection braking (DCB)
( 101)
Automatic DC-injection braking (Auto-DCB) ( 102)
Parameter INFO
C019
Auto-DCB: threshold
Response threshold for activating the DC-injection braking
C036
DCB: Current
Enter the current in [%]
C106
Auto-DCB: hold time
C107
DCB: hold time
C701/4
See explanations for function block LA_NCtrl
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