Lenze 8400 TopLine - Manual (Page 270)

5 Motor control (MCTRL)
5.10 Parameterisable additional functions
270
Lenze · 8400 TopLine · Reference manual · DMS 6.0 EN · 06/2014 · TD05/TD14
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Explanation of the automatic DC-injection braking function by means of two examples
[5-23] Example 1: Auto-GSB signal characteristic during V/f operation without speed feedback
[5-24] 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
 .
 The DC braking current set in C00036 is
injected.
 After the hold time ( C00106 ) has expired,
a pulse inhibit is set.
 Speed setpoint
 Actual speed value of the motor
 Controller output current
 Disable voltage
 DC-injection braking is active
0
1
2
3
4
C00106
C00036
C00019
Œ  Ž
 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 ( C00106 ) 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
 Disable voltage
 DC-injection braking is active
0
1
2
3
4
C00106
C00019
Œ  Ž