8400 HighLine | Parameter setting & configuration
Motor control (MCTRL)
Parameterisable additional functions
174 L Firmware ≤ 05.00 - DMS 4.2 EN - 02/2010
5.8.3 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 is set in C00036
.
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 when operated without speed feedback.
Tip!
DC-injection braking has the advantage that it is possible to influence the braking
time by changing the motor current or the braking torque..
Short overview of the relevant parameters:
Method
DC-injection braking can be carried out in two ways with different types of activation:
Manual DC-injection braking (DCB)
( 175)
Automatic DC-injection braking (Auto-DCB) ( 175)
Danger!
The DC-injection braking or auto DC-injection braking function cannot be used
with the servo control (SC) mode.
Holding braking is not possible when this braking mode is used!
• For low-wear control of a holding brake, use the basic function "Holding brake
control". ( 437)
Parameter Info Lenze setting
Value Unit
C00019 Auto-DCB: Threshold
• Operating threshold for activating DC-injection
braking
3rpm
C00036
DCB: Current
• Braking current in [%] based on I
max
(C00022)
50 %
C00106
Auto-DCB: Hold time 0.500 s
C00107
DCB: Hold time 999.000 s
C00701/4
LA_NCtrl: bSetDCBrake
• Selection of the signal source for activating DC-
injection braking
Dependent on the selected
control mode
efesotomasyon.com - Lenze
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