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Lenze · 8400 HighLine · Reference manual · DMS 12.0 EN · 06/2017 · TD23
301
5
Motor control (MCTRL)
5.14
Monitoring
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Tip!
• If forced ventilated motors are used, a premature response of the overload threshold can
be avoided by deactivating this function if necessary (
= "0: No Reaction").
• The current limits set in
influence the I
2
xt calculation only in an
indirect way. However, the operation of the motor at maximum possible load can be
averted.
Defining current and speed limits
5.14.3
Motor overcurrent monitoring
The ultimate motor current to be parameterised in
is a limit value to protect the motor from
destruction, influence of the rated data and demagnetisation.
• This limit value must not be travelled cyclically in the drive process.
• If the instantaneous value of the motor current exceeds the limit value set in
response "Fault" occurs to protect the motor and the error message "
" is
entered into the logbook.
• The maximum currents to be parameterised in
should have a sufficient
distance to this limit value.
Related topics:
Note!
If a Lenze motor is selected from the catalogue whose plant parameters are transferred
into the inverter, the setting of the maximum current in
and
will
automatically be adapted to the selected motor.