6-4
n75 Low Carrier Frequency at Low Speed Changes during
operation
No
Setting
range
0, 1 Unit of
setting
1 Default setting 0
Set Values
Value Description
0 Low carrier frequency at low speed disabled.
1 Low carrier frequency at low speed enabled.
•Normally set n75 to 0.
•When
the output frequency is 5 Hz or higher and the output current rate is 1
10% or less,
the
carrier frequency will be automatically reduced to 2.5 kHz with n75 set to 1. If the
load
is heavy at low speed, the Inverter will withstand higher overcurrent by suppres
-
sing the heat radiation of the Inverter caused by the carrier frequency.
•This function is enabled with 2, 3, or 4 set in n46 for carrier frequency.
Advanced Operation Chapter
6
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