
8400 motec | Software Manual
Motor control (MCTRL)
Defining current and speed limits
64
L
Firmware
≤
02.00 - DMS 2.1 EN - 03/2011
5.4
Defining current and speed limits
Limitation of the speed setpoint
Parameterising the reference speed in
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
.
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 (
) = 1500 ... 3000 rpm
Irrespective of the selected motor control, there are more limitation options:
Current limitation in motor and generator mode
In the various motor control modes, the controller is provided with functions which
determine the dynamic behaviour under load and counteract exceedance of the maximum
current in motor or generator mode.
The current limits must be selected depending on
the permissible maximum current of the motor
recommendation: I(Mot)
N
< 1.5 ... 2.0
the permissible maximum current of the inverter
the torque in motor/generator mode required for the application
Parameter
Info
Lenze setting
Value Unit
Max. positive speed
120 %
Max. negative speed
120 %
Max. positive output frequency
300 Hz
Max. negative output frequency
300 Hz
Parameter
Info
Lenze setting
Value Unit
Imax in motor mode
47.00 A
Imax in generator mode
• 100 %
≡
Imax in motor mode (
)
100 %
Summary of Contents for 8400 motec Series
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