Danfoss VLT HVAC Drive FC 131 - Acoustic Noise or Vibration Control

•
•
•
•
-
3.2.7 Electrical Wiring
L1
L2
L3
3-phase
power
input
PE
PE
+10 V DC
0-10 V DC-
0-10 V DC-
50 (+10 V OUT)
54 (A IN)
53 (A IN)
55 (COM A IN/OUT)
0/4-20 mA
0/4-20 mA
42 0/4-20 mA A OUT / D OUT
45 0/4-20 mA A OUT / D OUT
18 (D IN)
19 (D IN)
27 (D IN/OUT)
29 (D IN/OUT)
12 (+24 V OUT)
24 V (NPN)
20 (COM D IN)
O V (PNP)
24 V (NPN)
O V (PNP)
24 V (NPN)
O V (PNP)
24 V (NPN)
O V (PNP)
Bus ter.
Bus ter.
RS485
Interface
RS485
(N RS485) 69
(P RS485) 68
(Com RS485 ) 61
(PNP)-Source
(NPN)-Sink
ON=Terminated
OFF=Unterminated
ON
1 2
240 V AC 3 A
Not present on all power sizes
Do not connect shield to 61
01
02
03
relay 1
relay 2
UDC+
UDC-
Motor
U
V
W
e30bd467.13
06
05
04
240 V AC 3 A
Illustration 14: Basic Wiring Schematic Drawing
N O T I C E
There is no access to UDC- and UDC+ on the following units:
IP54, 380–480 V, 22–90 kW (30–125 hp)
3.2.8 Acoustic Noise or Vibration
If the motor or the equipment driven by the motor - for example, a fan - is making noise or vibrations at certain frequencies, config-
ure the following parameters or parameter groups to reduce or eliminate the noise or vibrations:
Parameter group 4-6* Speed Bypass.
Set parameter 14-03 Overmodulation to [0] Off.
Switching pattern and switching frequency parameter group 14-0* Inverter Switching.
Parameter 1-64 Resonance Dampening.
AQ367426199594en-000101 / 130R098822 | Danfoss A/S © 2021.06
Installation
VLT® HVAC Drive FC 131
Operating Guide