CARLO GAVAZZI VariFlex3 RVLF Series Quick Start Guide

6 Specications are subject to change without notice. Pictures are just an example. For special features and/or customization, please ask to our sales network. 18/11/2014
Motor Controllers AC Variable Frequency Drives Type Variex
3
RVLF
3.1. Wiring and EMC Guidelines
For effective interference suppression, do not route power and control cables in the same
conduit or trucking. To prevent radiated noise, motor cable should be put in a metal conduit.
Alternatively an armored or shielded type motor cable should be used.
For effective suppression of noise emissions the cable armor or shield must be grounded at
both ends to the motor and the inverter ground. These connections should be as short as
possible. Motor cable and signal lines of other control equipment should be at the least 30 cm
apart.
RVLF has a built in Class “A” EMC lter to rst environment restricted. (Category C2).
For some installations such as residential, (Category C1) an optional external Class “B” type
lter will be necessary. Please consult your local supplier.
1. Protective earth conductor.
Conductor size for enclosure & back plate
must comply with the local electrical
standards. Min 10mm².
2. Back plate. Galvanised steel (Unpainted).
3. Ferrite core/Output reactor ferrite cores can
be used to reduce radiated noise due to long
motor cables. If ferrite core is used loop motor
wires, 3 times round the core. Install core as
close to the inverter as possible.
Output reactors provide additional benet of
reducing dv/dt for protection of motor windings.
4. Metal cable clamp. no more than 150mm
from the inverter.
Note: If no enclosure & back plate is used
then connect the cable shield by a good 360º
termination to the Inverter output terminal E.
5. Screened (shielded four core cable).
6. Separate protective earth wire, routed outside
motor cable separated be at least 100mm.
Note: this is the preferred method specially for
large output cables and long length. Multi core
screened (3 core & protective earth) can be
used for small power and short length.
7. Connect the cable shield by a good 360º
termination and connect to the motor
protective earth terminal. This link must be as
short as possible.
8. Motor earth terminal (protective earth).
L1 (L)
L1 (L) L3 (N)
Drive
E
E
T1 T2 T3
L3 (N)
E
2
1
3
4
5
6
7
8
PE
M
Typical Wiring.
3. Environment & Installation

CARLO GAVAZZI VariFlex3 RVLF Series Specifications

General

Brand	CARLO GAVAZZI
Model	VariFlex3 RVLF Series
Category	Controller
Language	English