Lenze L-force HighLine C 8400 Series Reference Manual page 245

Limiting the maximum output frequency

Note!
If the servo control mode (SC) is selected, the drive assumes the 'maximum
current limitation' state if the maximum output frequency (C00910) has been
reached.
Defining current and speed limits
The maximum output frequency (C00910) of the controller is not limited depending on the
switching frequency. Therefore, adapt the maximum output frequency according to our
recommendation:
 At a switching frequency of 4 kHz, for instance, 500 Hz for the maximum output
frequency should not be exceeded.
Carry out further measures:
 If required, deactivate the switching frequency changeover by the heatsink
temperature via C00144.
 If required, ensure that the changeover threshold of the controller output current to
the next switching frequency below will not be exceeded. If required, select a constant
switching frequency in C00018.
Display of the current switching frequency
The current switching frequency applied in the controller is displayed in C00725.
Operation at an ambient temperature of 45°C
The controller is designed so that operation at an ambient temperature of 45° C without
derating is permissible at a switching frequency of 4 kHz.
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8400 HighLine C | Reference manual
Maximum output frequency
L
Motor control (MCTRL)
Parameterisable additional functions
( 147)
1
-- - Switching frequency
≤
8
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