11 basic drive functions – Lenze 9400 User Manual
Page 545
Lenze · Servo-Inverter 9400 HighLine · Reference manual · DMS 10.0 EN · 11/2013 · TD05/06
545
11
Basic drive functions
11.12
Brake control
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
• If a basic function is requested again before the brake closing time has elapsed, DC-injection
braking is interrupted and - if activated in
– the flying restart process is started and the
basic function is activated:
[11-43] Example 2: Speed follower active stopping active (stopping time > brake closing time) speed follower active
Automatic DC-injection braking when quick stop is activated
DC-injection braking is activated automatically if a quick stop is triggered in the drive, e.g. via the
basic function "
" or as a response to an error.
• 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.
• After the brake closing time set in
has also elapsed, the basic function "Brake control"
automatically sets controller inhibit.
• 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.
: Brake activation threshold
: Brake closing time
: Flying restart (activated here)
t
t
Enable speed follower
t
Speed setpoint
Speed follower active
DC brake active
t
Stopping active