Danfoss VLT HVAC - Motor Wiring Overview

All types of three-phase asynchronous stand-
ard motors can be connected to the frequency
converter. Normally, small motors are star-
connected (230/400 V, D/Y). Large motors are
delta-connected (400/690 V, D/Y). Refer to
the motor name plate for correct connection
mode and voltage.
Illustration 4.10: Terminals for motor connection
NB!
In motors without phase insulation paper or other insulation reinforcement suitable
for operation with voltage supply (such as a frequency converter), fit an Sine-wave
filter on the output of the frequency converter. (Motors that comply with IEC
60034-17 do not require an Sine-wave filter).
No. 96 97 98 Motor voltage 0-100% of mains voltage.
U V W 3 cables out of motor
U1 V1 W1
6 cables out of motor, Delta-connected
W2 U2 V2
U1 V1 W1 6 cables out of motor, Star-connected
U2, V2, W2 to be interconnected separately
(optional terminal block)
No. 99 Earth connection
PE
Table 4.6: 3 and 6 cable motor connection.
4.1.10. Motor wiring overview
Enclosure: A2
(IP 20/IP
21)
A3
(IP 20/IP
21)
A5
(IP 55/IP
66)
B1
(IP 21/IP
55/
IP 66)
B2
(IP 21/IP
55/
IP 66)
C1
(IP 21/IP
55/
IP 66)
C2
(IP 21/IP
55/
IP 66)
Motor size:
200-240 V
1.1-3.0
kW
3.7
kW
1.1-3.7
kW
5.5-11
kW
15
kW
18.5-30
kW
37-45
kW
380-480 V
1.1-4.0
kW
5.5-7.5
kW
1.1-7.5
kW
11-18.5
kW
22-30
kW
37-55
kW
75-90
kW
525-600 V
2.2-4.0
kW
5.5-7.5
kW
Goto:
4.1.11 4.1.12 4.1.13 4.1.14
Table 4.7: Motor wiring table.
4. Electrical installation VLT
®
HVAC Drive Operating Instructions
30 MG.11.A4.02 - 09.10.06. VLT
®
is a registered Danfoss trademark
4