AX5172 - Switching frequency of the IGBT module
In case of a higher PWM frequency, the power of the servo drive may be derated. Due to the higher switching losses, the derating is changed. In result of this, the current rating and the peak current of the servo drives is reduced.
servo drive | PWM frequency (kHz) | current rating Irated(A) | peak current Ipeak(A) | tmax (s)Ipeak | tmax (s)Ipeak | tmax (s)Ipeak | ||
|---|---|---|---|---|---|---|---|---|
400 V AC | 480 V AC | 400 V AC | 480 V AC | 0 Hz – 1,5 Hz | 1,5 Hz – 3 Hz | > 3 Hz | ||
| 4 | 72 | 144 | 3 | 3 | 3 | ||
8 | 72 | 144 | 3 | 3 | 3 | |||
16 | 40 | 36 | 40 | 36 | 3 | 3 | 3 | |
The settings are made in the parameters P-0-0090 (channel peak current) and P-0-0091 (Channel rated current)