3.5.4 Motor Connection
Connect the motor to terminals 96, 97, 98. Connect earth to PE-terminal.
No.
96
97
98
Motor voltage 0-100% of mains voltage
U
V
W
3 wires out of motor
U1
W2
V1
U2
W1
V2
6 wires out of motor, Delta connected
U1
V1
W1
6 wires out of motor, Star connected
U2, V2, W2 to be interconnected separately (optional terminal block)
PE
Earth connection
See
Technical Data
for correct dimensioning of cable cross-section.
All types of three-phase asynchronous standard motors can be connected
to a frequency converter. Normally, small motors are star-connected
(230/400 V,
Δ
/ Y). Large motors are delta-connected (400/690 V,
Δ
/ Y).
The correct connection mode and voltage can be read from the motor
nameplate.
NB!
In motors without phase insulation paper, an LC filter
should be fitted on the output of the frequency con-
verter.
3.5.5 Direction of Motor Rotation
The factory setting is for clockwise rotation with the frequency converter
transformer output connected as follows:
Terminal 96 connected to U-phase.
Terminal 97 connected to V-phase.
Terminal 98 connected to W-phase.
The direction of rotation can be changed by switching two phases on the
motor terminals.
3 Installation
VLT
®
Decentral FCD 300 Design Guide
48
MG.90.S1.02 - VLT
®
is a registered Danfoss trademark
3