LEESON FHP Series Chassis Mount Variable Speed Drives - Manual (Page 73)

63 Troubleshooting
Optional C510 Capacitor Kit (p/n: 175325)
LABEL ON CAPACITOR FREQUENCY VALUE
3n3J 12kHz 0.0033uF
6n8 10kHz 0.0068uF
10n 8kHz 0.01uF
33n 4kHz 0.033uF
See Figure 30 on page 64 for C510 location 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 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 freqency on all FHP controls, install one
of the following 2-pin capacitors (C510) on the bottom
board: