Lenze 8400 TopLine - Manual (Page 154)

5 Motor control (MCTRL)
5.3 Defining current and speed limits
154
Lenze · 8400 TopLine · Reference manual · DMS 6.0 EN · 06/2014 · TD05/TD14
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
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:
Parameter 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!