TB Wood's WFC1000 Series, Installation, Operation And Maintenance Instructions

Page: 49 / 82

41
Drive Derating at high carrier frequencies
The chart below shows the derating of the WFC
HT
Series AC inverters at the designated carrier frequencies.
Note that the derating at certain carrier frequencies is identical to an adjacent frequency. Therefore, there
are three derating values over the six carrier frequency selections.
MODEL
WFC1001-0
WFC2000-7
WFC2001-0
WFC2002-0
WFC2003-0
WFC2005-0
WFC2007-5
WFC2010-0
WFC2015-0
WFC2020-0
WFC2025-0
WFC4001-0
WFC4002-0
WFC4003-0
WFC4005-0
WFC4007-5
WFC4010-0
WFC4015-0
WFC4020-0
WFC4025-0
WFC4030-0
WFC4040-0
WFC4050-0
WFC4060-0
WFC4075-0
CONTINUOUS LOAD
RATING @ 3 & 4 KHZ
110%
110%
110%
110%
110%
110%
110%
110%
110%
110%
110%
110%
110%
110%
110%
110%
110%
110%
110%
110%
110%
110%
110%
110%
110%
See Note
CONTINUOUS LOAD
RATING @ 6 & 8 KHZ
110%
110%
110%
110%
110%
110%
110%
110%
110%
110%
110%
110%
110%
110%
110%
110%
110%
110%
110%
110%
110%
95%
78%
79%
83%
See Note
CONTINUOUS LOAD
RATING @ 12 &16 KHZ
110%
110%
110%
110%
82%
64%
110%
100%
110%
96%
86%
110%
110%
110%
90%
110%
110%
110%
69%
110%
110%
62%
51%
65%
57%
See Note
Note: Due to the internal temperature rise of the WFC4075-0, 75 HP models, the adjustability of parameter
83-PWM will be limited. The chart below shows the selections available for the WFC4075-0 models only. All
other models will program according to the chart on the preceding page.
DATA MAXIMUM MOTOR CARRIER CARRIER FREQUENCY CARRIER FREQUENCY
CODE FREQUENCY (Hz) FREQUENCY (kHz) (kHz) @ 12% Vout (kHz) @ 6% Vout
0 400 Autoselect Autoselect Autoselect
1 260 2.3 2.3 2.3
2 350 2.5 2.5 2.5
3 400 4.6 4.6 4.6
4 400 5 5 5
5 400 9.2 4.6 4.6
6 400 10 5 5
7 400 9.2 4.6 2.3
8 400 10 5 2.5
De-rating table for WFC4075-0 models only
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