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5
Motor control (MCTRL)
5.10
Parameterisable additional functions
270
Lenze · 8400 HighLine · Reference manual · DMS 12.0 EN · 06/2017 · TD23
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Explanation of the automatic DC-injection braking function by means of two examples
[5-27] Example 1: Auto-GSB signal characteristic during V/f operation without speed feedback
[5-28] Example 2: Auto-GSB signal characteristic during V/f operation with speed feedback
The motor rotates at a specified speed.
The current adjusts itself to the load, see
.
injected.
After the hold time (
a pulse inhibit is set.
Speed setpoint
Actual speed value of the motor
Controller output current
Pulse inhibit
DC-injection braking is active
0
1
2
3
4
C00106
C00036
C0001
9
The motor rotates at a specified speed.
The current adjusts itself to the load, see
.
The current sets itself load-dependent
until the hold time (
) has expired.
The actual speed value of the motor
follows the speed setpoint. The resulting
current depends on the load.
Speed setpoint
Actual speed value of the motor
Controller output current
Pulse inhibit
DC-injection braking is active
0
1
2
3
4
C00106
C0001
9