Lenze E94AxHE Servo Drives 9400 HighLine (Firmware 01-37 Instrukcja Użytkownika Strona 80

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9400 HighLine | Parameter setting & configuration
Motor interface
Initial commissioning | Select switching frequency
80 Firmware 1.37 - 09/2006 L
Automatic chopper frequency reduction
Under C00018, it is possible to select "variable" chopper frequencies for the controller.
With this selection, the controller reduces the chopper frequency depending on the
setpoint current.
r Depending on the current, the controller switches down to an assigned chopper
frequency; the modulation mode remains unchanged.
r The switching thresholds are device-dependent (see 9400 Hardware Manual, chapter
"Rated data").
r If instead of a variable switching frequency a fixed switching frequency has been
selected in C00018
, no switching frequency changeover takes place. Due to the
rotating field frequency range of 0...5 Hz only a lower continuous current and
maximum currents can be applied (see 9400 Hardware Manual, chapter "Rated data").
O Tip!
With the same load profile, a deactivation due to an excessive controller load (I x t)
is more likely with a fixed chopper frequency setting than with a variable setting.
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