YASKAWA Varispeed L7, Instruction Manual, Page: 131 / 243

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 (%)
http://nicontrols.com