For 3-phase connection, connect wires to all three terminals.
For single-phase connection, connect wires to terminals L1/L and L3/N.
Illustration 3.2: Three-phase and single-phase wire connections.
3.3 Motor Connection
3.3.1 How to Connect the Motor
See the chapter
Specifications
for correct dimensioning of motor cable cross-section and length.
•
Use a shielded/armored motor cable to comply with EMC emission specifications, and connect this cable to both the decoupling plate and the
motor metal.
•
Keep motor cable as short as possible to reduce the noise level and leakage currents.
For further details on mounting of the decoupling plate, please see instruction MI.02.BX.YY.
All types of three-phased asynchronous standard motors can be connec-
ted to the frequency converter. Normally, small motors are star-connec-
ted (230/400 V,
Δ
/Y). Large motors are delta-connected (400/690 V,
Δ
/
Y). Refer to motor nameplate for correct connection and voltage.
Illustration 3.3: Star and delta connections.
Step 1: First, mount the earth cable.
Step 2: Connect wires to terminals either in star or delta-connection. See
motor nameplate for further information.
Illustration 3.4: Mounting of earth cable and motor wires.
VLT
®
Micro Drive FC 51 Operating Instructions
3 Electrical Installation
MG.02.A4.02 - VLT
®
is a registered Danfoss trademark
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