Carrier Frequency Selection; Setting The Carrier Frequency - Omron VARISPEED E7 User Manual

Carrier Frequency Selection

Setting the Carrier Frequency

Using the following parameters the carrier frequency setting can be fitted to the applications requirements.
Related Parameters
Parameter
No.
C6-01
C6-02
C6-03
C6-04
C6-05
*1. The factory setting depends on the Inverter capacity.
*2. The setting range depends on the Inverter capacity.
*3. This parameter can only be set when C6-02 is set to F.
Carrier Frequency, Current Derating and Overload Capability in Normal Duty 1 and 2
The Inverter overload capability depends among other things on the carrier frequency setting. If the carrier fre-
quency setting is higher than the factory setting, the overload current capability must be reduced.
Further, Normal Duty 2 enables a higher continuous output current before the Inverter overload calculation is
started.
Inverters in Protection Class IP00 and IP20 / NEMA 1 and Normal Duty 1
In Normal Duty 1 the default carrier frequency depends on the Inverter capacity. With the default setting the
overload capability is 120% of the rated output current for 1 minute. If the carrier frequency is set to a higher
value, the overload capability is reduced as shown in
120%
96%
90%
Fig 6.1 Overload Capability depending on Carrier Frequency (IP00 and IP20 / NEMA 1) in Normal Duty 1
6-2
Name
Normal duty selection

Carrier frequency selection

Carrier frequency upper limit
Carrier frequency lower limit
Carrier frequency proportional gain
400V Class 132kW
0
5kHz
Setting
Range
1 or 2
0 to F
2.0 to
15.0
*2 *3
0.4 to
15.0
*2*3
00 to 99
Fig 6.1.
200V Class 37 to 90kW
400V Class 75 to 110kW
200V Class 30kW
400V Class 30 to 55kW
400V Class 160kW
8kHz 10kHz
Changes
Factory
During
Setting
Operation?
1 No
*1
No
6
15.0 kHz
No
*1
15.0 kHz
No
*1
00 No
*3
200V Class 0.4 to 22kW
400V Class 0.4 to 22kW
Carrier Freq.
15kHz
Access
Level
A
A
A
A
A