Danfoss VLT HVAC Drive FC 100 Instruction Manual page 51

4 How to Install
Switching frequency:
When adjustable frequency drives are used together with sine-wave filters to reduce the acoustic noise from a motor, the switching frequency must be
set according to the instructions in par. 14-01
Term. no. 96
U
U1
W2
U1
1)Protected Ground Connection
4
NOTE!
In motors without phase insulation paper or other in-
sulation reinforcement suitable for operation with volt-
age supply (such as a adjustable frequency drive), fit
a sine-wave filter on the output of the adjustable fre-
quency drive.
4-34
Switching Frequency
.
97 98 99
V W Motor voltage 0–100% of AC line voltage.
PE 1)
3 wires out of motor
V1 W1 Delta-connected
PE 1)
U2 V2 6 wires out of motor
V1 W1 Star-connected U2, V2, W2
PE 1)
U2, V2 and W2 to be interconnected separately.
MG.16.A1.22 - VLT
VLT HVAC Low Harmonic Drive Instruction
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is a registered Danfoss trademark
Manual