Lenze 9400 - Manual (Page 393)

Lenze · Servo-Inverter 9400 HighLine · Reference manual · DMS 10.0 EN · 11/2013 · TD05/06
393
11 Basic drive functions
11.3 Quick stop
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11.3.4.1 DC-injection braking and flying restart process
[11-14] Process example: speed follower is active  QSP_bActivateDCBrake is active  speed follower is active
A. Initial situation: basic function "Speed follower" is enabled and active.
B. QSP_bActivateDCBrake control input is set to TRUE through the application to activate DC-
injection braking.
C. DC-injection braking is executed with the braking current set in C00974 .
D. QSP_bActivateDCBrake control input is reset to FALSE through the application to deactivate DC-
injection braking.
E. The flying restart process starts, i.e. the controller calculates the output frequency required for
the momentary motor speed, then connects to the system, and accelerates the motor to the
defined setpoint again.
 C00974 : Braking current
t
t
Enable speed follower
t
Speed setpoint
Speed follower active
DC brake active
Œ
t
Quick stop active
t
TRUE
FALSE
bActivateDCBrake
0
1
2
3
4
Actual
speed
t
DC brake current