Dc-injection braking when quick stop is activated, 11 basic drive functions – Lenze 9400 User Manual
Page 394
11
Basic drive functions
11.3
Quick stop
394
Lenze · Servo-Inverter 9400 HighLine · Reference manual · DMS 10.0 EN · 11/2013 · TD05/06
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11.3.4.2
DC-injection braking when quick stop is activated
If DC-injection braking is activated in
instead of quick stop, DC-injection braking is executed
automatically when quick stop is activated.
• After activating quick stop, a change-over to the "Quick stop active" function state is effected,
and for the quick stop deceleration time set in
a DC-injection braking process with the
braking current set in
is carried out.
• After this time has elapsed, a change-over to the braking current parameterised in
is
carried out and DC-injection braking is continued with this braking current.
• The DC-injection braking in this case is also carried out when the "Quick stop by trouble" error
response is actuated; however, instead of the "Quick stop active" function state, the "Fault"
function state is active, and the controller is in the "Quick stop by trouble active" device state.
[11-15] Process example: speed follower is active quick stop activation speed follower is active
Actual speed value
Actual speed value if the quick stop braking current is parameterised too low (
: Quick stop decel. time
: Quick stop braking current
: Braking current
t
t
Enable speed follower
t
Speed setpoint
Speed follower active
Quick stop active
DC brake active
t
t
DC brake current
0
1
Note!
The quick stop braking current in
has to be set so that the drive can be
decelerated from the maximum operating speed to standstill within the deceleration
time for quick stop set in
!