Appendix A Specifications
VFD-EL-W
A-5
A5. Derating Curve for Ambient Temperature and Carrier Frequency
Ambient Temperature Derating Curve
Model Ambient Temperature Limitation
VFD007EL21W(-1)
If the AC motor drive operates at the rated current, the ambient temperature needs
to be between -10–40°C. If the temperature is above 40°C, decrease 2% of the
rated current for every 1°C increase in temperature. The maximum allowable
temperature is 50°C.
Other models
If the AC motor drive operates at the rated current, the ambient temperature needs
to be between -10–50°C. If the temperature is above 50°C, decrease 2% of the
rated current for every 1°C increase in temperature. The maximum allowable
temperature is 60°C.
Other models: VFD002EL21W(-1), VFD004EL21W(-1), VFD015EL21W(-1), VFD022EL21W(-1),
VFD004EL43W(-1), VFD007EL43W(-1), VFD015EL43W(-1), VFD022EL43W(-1), VFD040EL43W(-1)
Carrier Frequency Derating Curve
Model Carrier Frequency Limitation
VFD007EL21W(-1)
If the AC motor drive is installed at an ambient temperature of 40°C, and operates
at the rated current, the carrier frequency needs to be within 8 kHz. If the carrier
frequency is higher than 8 kHz, decrease 5% of the rated current for every 1 kHz
increase in the carrier frequency. The maximum allowable carrier frequency is 12
kHz.
Other models
If the AC motor drive is installed at an ambient temperature of 50°C, and operates
at the rated current, the carrier frequency needs to be within 8 kHz. If the carrier
frequency is higher than 8 kHz, decrease 5% of the rated current for every 1 kHz
increase in the carrier frequency. The maximum allowable carrier frequency is 12
kHz.
Rated current (%)
Ambient temperature (°C)
Other models
Carrier frequency (kHz)
Other models 50°C
All models 25°C
Rated current (%)
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