6-6
6
Normal Duty 1 (C6-01=1)
The default carrier frequency for the Normal Duty 1 mode depends on the inverter capacity. The overload
capability is 120% of the Normal Duty 1 rated current for 1 minute.
If the carrier frequency is set to a higher value than the factory setting, the overload capability is reduced like
shown in Fig 6.3.
Fig 6.3 Overload Capability in Normal Duty 1 Mode
Normal Duty 2 (C6-01=2)
In the Normal Duty 2 mode the maximum carrier frequency is decreased compared to the Normal Duty 1
mode but the short term overload capability is increased. Refer to Fig 6.4 for the overload capability of both
modes.
Fig 6.4 Normal Duty 1 and 2 Inverter Overload Detection Curve
120%
96%
5kHz 10kHz 15kHz
0
Output Current for 1 min.
Carrier Freq.
8kHz
200V Class 37 to 90kW
400V Class 75 to 110kW
400V Class 132kW
200V Class 0.4 to 22kW
400V Class 0.4 to 22kW
90%
200V Class 30kW
400V Class 30 to 55kW
400V Class 160kW
0.1
1
10
100
100 110 120 130 140 150 160 170 180 190 200
Overload Level [%]
Inverter Overload Detection Time [min]
Normal Duty 1 Normal Duty 2
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