Connection To Mains And Earthing; Motor Cable Connection - Danfoss VLT AQUA Drive FC 202 Design Manual

How to Install

5.3.3 Connection to Mains and Earthing

NOTE
The plug connector for power can be removed.
1. Make sure that the frequency converter is
properly earthed. Connect to earth connection
(terminal 95). Use screw from the accessory bag.
2. Place plug connector 91, 92, 93 from the
accessory bag onto the terminals labelled MAINS
at the bottom of the frequency converter.
3. Connect mains wires to the mains plug
connector.
CAUTION
The earth connection cable cross section must be at least
10 mm 2 or 2 rated mains wires terminated separately
according to EN 50178.
The mains connection is fitted to the main switch if
included.
NOTE
Check that mains voltage corresponds to the mains
voltage of the frequency converter name plate.
CAUTION
IT Mains
Do not connect 400 V frequency converters with RFI-filters
to mains supplies with a voltage between phase and earth
of more than 440 V.
For IT mains and delta earth (grounded leg), mains voltage
can exceed 440 V between phase and earth.
3 Phase
power
input
Illustration 5.44 Terminals for Mains and Earthing
®
VLT AQUA Drive FC 202 Design Guide
91 (L1)
92 (L2)
93 (L3)
95 PE
®
MG20Z102 - VLT is a registered Danfoss trademark

5.3.4 Motor Cable Connection

NOTE
Screened motor cable is recommended. If an unscreened
cable is used, some EMC requirements are not complied
with. For more information, see 5.10 EMC-correct Instal-
lation.
1. Fasten de-coupling plate to the bottom of the
frequency converter with screws and washers
from the accessory bag.
2. Attach motor cable to terminals 96 (U), 97 (V), 98
(W).
3. Connect to earth connection (terminal 99) on de-
coupling plate with screws from the accessory
bag.
4. Insert terminals 96 (U), 97 (V), 98 (W) and motor
cable to terminals labelled MOTOR.
5. Fasten screened cable to de-coupling plate with
screws and washers from the accessory bag.
All types of three-phase asynchronous standard 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.
U V W
96 97 98
Illustration 5.45 Motor Cable Connection
NOTE
If motors are not inverter-duty rated, fit a Sine-wave filter
on the output of the frequency converter.
U V W
96 97 98
101
5 5