5-2
Current Derating and Limitation related to
the Carrier Frequency
The inverter rated current derating and limitation are changed by carrier frequency setting.
Related Parameters
Rated Carrent Derating
The inverter overload capability depends on the carrier frequency setting.
If the carrier frequency is increased, a derating for the rated current like shown in Fig 5.1 must be considered.
Fig 5.1 Current Derating depending on the carrier frequency
Parameter
No.
Name
Factory
Setting
Change
during
Opera-
tion
Control Methods
V/f
Open
Loop
Vector
Closed
Loop
Vector
C6-02 Carrier frequency selection 3 (8 kHz) No Q Q Q
125%
100%
75%
0
5 8 15 (kHz)
Carrier
frequency
200V Class 22kW or less
400V Class 22kW or less
200V Class 30 to 55kW
400V Class 30 to 55kW
2
10
100% Rated Current
3 minutes 50% ED
Output current (%)
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