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7 Advanced Settings
High-function General-purpose Inverter RX2 Series User’s Manual
7-4 Reduction of Motor Noise, Noise and Inverter Heat Generation
7
7-4-2 Automatic Carrier Reduction
Carrier frequency reduction starts once the current exceeds a certain value to the rated current.
When the current decreases, the carrier frequency is automatically regained.
Carrier frequency reduction starts once the temperature of the internal output element exceeds a cer-
tain value.
When the temperature lowers, the carrier frequency is automatically regained.
Output Current-dependent ([bb103] = 01)
Cooling Fin Temperature-dependent ([bb103] = 02)
12.5kHz
9.0kHz
5.5kHz
2.0kHz
16.0kHz
55% 67% 79% 91%
60% 72% 84% 96%
Max. Rated ND (16.0 kHz)
Carrier
Frequency
Rated Current Ratio
Max. Rated LD
Max. Rated VLD
12.5kHz
9.0kHz
5.5kHz
2.0kHz
16.0kHz
40°C 50°C 60°C 70°C
45°C 55°C 65°C 75°C
Max. Rated ND (16.0 kHz)
Carrier
Frequency
Internal Temperature
Max. Rated LD
Max. Rated VLD
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