Chapter 3 Installation and Wiring 35
EV2000 Series Universal Variable Speed Drive User Manual
Mechanical
system
Manufacturing
mechanics
（
Sensor such as:
temperature, position,
）
pressure
Control
equipment
（
）
Such as: PC
Mains
Input reactor
Linear noise
filter
Input filter
Inverter
Electric cabinet
Area
Ⅴ
Area
Ⅲ
Area
Ⅰ
Area
Ⅵ
Motor
Area
Ⅱ
Earthing
separation
board
Area
Ⅳ
Detecting signal cable
Motor cables
Fig. 3-43 Recommendation of Installation space
Attention:
·
Area
Ⅰ
should be used to install transformers of
control power supply, control system and sensor.
·
Area
Ⅱ
should be used for interfaces of signal and
control cables, correct immunity level is required.
·
Area
Ⅲ
should be used to install noise sources such
as input reactor, the drive, brake unit and contactor.
·
Area
Ⅳ
should be used to install output noise filter
and the wires of filter.
·
Area
Ⅴ
should be used to install power source and
cable connecting parts of RFI filter.
·
Area
Ⅵ
should be used to install motor and motor
cables.
·
Areas should be isolated in space, so that
electro-magnetic decoupling effect can be achieved.
·
The minimum distance between areas should be 20cm.
·
Earthing bars should be used for decoupling among
areas, the cables from different area should be placed in
different tubes.
·
The filter should be installed at the interfaces between
different areas if necessary.
·
Bus cable(such as RS485) and signal cable must be
shielded
Electrical installation of the drive
10kV
Power
transformer
Motor
Metal
cabinet
AC input reactor
Metal
cabinet
PLC or
meters
Circuit breaker
Filter
AC Output
reactor
>30cm
>50cm
Inverter
Motor cable
Control cable
>20cm
Power
source
cable of
inverter
Isolation
transformer
Power
source cable
of meters
Fig. 3-44 Installation of the drive
·
Motor cable should be earthed at the drive side, if
possible, the motor and drive should be earthed
separately;
·
Motor cable and control cable should be shielded or
armored. The shield must be earthed and avoid
entangling at cable end to improve high frequency noise
immunity.
·
Assure good conductivity among plates, screw and
metal case of the drive; use tooth-shape washer and
conductive installation plate;
Generally, if there are some sensitive equipment, it is
more cost-effective to install the power filter at sensitive
equipment side.
3.4.7 Application of Power Line Filter
Power source filter should be used in the equipment that
may generate strong EMI or the equipment that is
sensitive to the external EMI. The power source filter
should be a two-way low pass filter through which only
50Hz current can flow and high frequency current should
be rejected.
Function of power line filter
The power line filter ensures the equipment can satisfy
the conducting emission and conducting sensitivity in
EMC standard. It can also suppress the radiation of the
equipment.
