5 Motor control (MCTRL)
5.3 Defining current and speed limits
154
Lenze · 8400 HighLine · Reference manual · DMS 12.0 EN · 06/2017 · TD23
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5.3 Defining current and speed limits
Limitation of the speed setpoint
Parameterising the reference speed in C00011
means that the drive must rotate at the set speed if
a speed setpoint of 100% is specified.
All speed setpoint selections are provided in % and always refer to the reference speed set in
C00011
.
Tip!
For reasons of achievable resolution and the accuracy involved, the reference speed should
be geared to the speed range required for the respective application.
Lenze recommendation: Reference speed (C00011
) = 1500 ... 3000 rpm
Irrespective of the selected motor control, there are more limitation options:
Parameters Info Lenze setting
Value Unit
C00909/1 Max. positive speed 120 %
C00909/2
Max. negative speed 120 %
C00910/1
Max. positive output frequency 1000 Hz
C00910/2
Max. negative output frequency 1000 Hz
Note!
In the torque-controlled operation (bTorquemodeOn = TRUE), the limitation of the speed
setpoint set in C00909/x
has no impact!
For the torque-controlled operation, a permissible speed range can be defined via the
speed limitation (inputs nSpeedHighLimit_a and nSpeedLowLimit_a at the
SB LS_MotorInterface
).
For a correct function of the speed limitation in both direction, the following applies:
The speed limitation operates with a internal hysteresis of 50 min
-1
. The upper or lower
speed limit resulting from the settings has to be higher than this hysteresis!
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