Danfoss VLT FC 100 Operating Instructions Manual page 122

VLT HVAC Drive High Power Operating In-
structions
20 mA
10 mA
0/4 mA
0%
100%
Min ref Max ref
14-01 Switching Frequency
Option:
[0] 1.0 kHz
[1] 1.5 kHz
[2] 2.0 kHz
[3] 2.5 kHz
[4] 3.0 kHz
[5] 3.5 kHz
[6] 4.0 kHz
[7] * 5.0 kHz
[8] 6.0 kHz
[9] 7.0 kHz
[10] 8.0 kHz
[11] 10.0 kHz
[12] 12.0 kHz
[13] 14.0 kHz
[14] 16.0 kHz
20-00 Feedback 1 Source
Option:
[0] No function
[1] Analog input 53
200%
Max ref X 20/10
Function:
Select the inverter switching frequency. Changing the switching frequency can help to reduce
acoustic noise from the motor.
The output frequency value of the frequency converter must never exceed
1/10 of the switching frequency. When the motor is running, adjust the switch-
ing frequency in par. 14-01
as possible. See also par. 14-00
Function:
Up to three different feedback signals can be used to provide the feedback signal for the frequen-
cy converter's PID Controller.
This meter defines which input will be used as the source of the first feedback signal.
Analog input X30/11 and Analog input X30/12 refer to inputs on the optional General Purpose I/O
board.
MG.11.F3.02 - VLT ® is a registered Danfoss trademark
6 How to Programme
Switching Frequency until the motor is as noiseless
Switching Pattern and the section Derating .
6
121