2 Engineering
2.9 Sine filter
48 DC1 Variable Frequency Drive 04/16 MN04020003Z-EN www.eaton.com
2.9 Sine filter
Sine filters can be used to remove high-frequency components from a
variable frequency drive’s output voltage, reducing conducted and emitted
interference as a result.
￫
When there is a load-dependent or thermal overload, DC1
variable frequency drives will automatically reduce the switching
frequency (f
PWM
) to a value as low as 2 kHz (= P-17 setting,
4 kHz, double modulation)
￫
Only sine filters that allow this minimum switching frequency of
2 kHz during operation should be used with DC1 variable
frequency drives.
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