LEESON FHP Series NEMA 4x Variable Speed Drive - Manual (Page 59)

50
Optional Capacitor Kit (
175325.00)
LABEL ON CAPACITOR FREQUENCY VALUE
3n3J 12kHz 0.0033uF
6n8 10kHz 0.0068uF
10n 8kHz 0.01uF
33n 4kHz 0.033uF
See Figure 22 for Capacitor locations and installation
instructions
In some applications, lowering carrier frequency reduces
switching losses and increases bearing life in some motors.
LEESON
provides an optional capacitor kit for lowering the
carrier frequency.
The default carrier frequency on FHP Series controls is
16kHz.
Using one of the capacitors supplied in the kit, the
carrier
frequency can be lowered to a range of 12kHz to 4kHz.
Note: Audible noise will increase when the carrier
frequency is lowered.
To lower the carrier frequency on all FHP Series controls,
install
one of the following 2-pin capacitors on the board: