Mains Connection; Motor Connection - Danfoss VLT Micro Drive FC 51 Operating Instructions Manual

VLT Micro Drive FC 51 Operating Instructions

3.2. Mains Connection

3.2.1. Connecting to Mains
Step 1: First mount earth cable.
Step 2: Mount wires in terminals L1/L, L2 and
L3/N and tighten.
For 3-phase connection, connect wires to all
three terminals.
For single-phase connection, connect wires to
terminals L1/L and L3/N.

3.3. Motor Connection

3.3.1. How to Connect the Motor
See the chapter
•
•
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 connected to the fre-
quency converter. Normally, small motors are
star-connected (230/400 V, Δ/Y). Large mo-
tors are delta-connected (400/690 V, Δ/Y).
Refer to motor nameplate for correct connec-
tion and voltage.
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.
MG.02.A2.02 - VLT ® is a registered Danfoss trademark
3. Electrical Installation
Illustration 3.1: Mounting of earth cable and mains
wires.
Illustration 3.2: Three-phase and single-phase
wire connections.
Illustration 3.3: Star and delta connections.
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