20 mA
10 mA
0/4 mA
100%
200%
0%
Max ref
Max ref X 20/10
Min ref
130BA857.10
14-01 Switching Frequency
Option:
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
until the motor is as noiseless
as possible. See also par. 14-00
Switching Pattern
and the section
Derating
.
[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:
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.
[0]
No function
[1]
Analog input 53
VLT HVAC Drive High Power Operating In-
structions
6 How to Programme
MG.11.F3.02 - VLT
®
is a registered Danfoss trademark
121
6