Connection Of The Motor; Direction Of Rotation; Star Or Delta Connection - Siemens sed2 Commissioning Manual

5.3 Connection of the motor

Connect the motor terminals U, V, W of the VSD to the motor.

5.3.1 Direction of rotation

You can change the direction of rotation of the motor by cross-connecting 2 of the output conductors at the VSD or
the motor.
The direction of rotation can also be reversed via parameter P1820 (see system parameter list on page 66).
Note: If the VSD is reset to factory defaults, parameter P1820 will be reset.

5.3.2 Star or delta connection

The required supply voltage and method of connection are indicated on the motor rating plate. In general, larger
motors (AC 400 / 690 V) are connected in a delta configuration and smaller motors (AC 230 / 400 V) in a star con-
figuration.
Siemens Building Technologies
HVAC Products
L1
L2
L3
PE
U
V
SED2
W
U
V
SED2
W
Motor terminal board
U V W
1 1 1
U V
W
2 2 2
Commissioning Guide
5 Electrical installation
SED2
U
L1 U
V
V
L2
W
L3 W
PE
U
V
M
W
U
V
M
W
W
U V
1 1 1
W V
U
2
2 2
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CM1G5192en
26.02.2003