




5X00226G03
图3-43安装空间建议
注意:
·区域Ⅰ应用于安装以下变压器:
控制电源、控制系统和传感器。
·Ⅱ区应用于信号和
控制电缆,需要正确的抗扰度等级。
·Ⅲ区应用于安装噪声源,如:
作为输入电抗器,驱动、制动单元和接触器。
·Ⅳ区应用于安装输出噪声滤波器
以及过滤器的电线。
·Ⅴ区应用于安装电源和
连接RFI过滤器部件的电缆。
·Ⅵ区应用于安装电机和电机
电缆。
·区域应在空间上隔离,以便
可以实现电磁解耦效果。
·区域之间的小距离应为20cm。
·接地棒应用于以下各项之间的去耦:
区域,不同区域的电缆应放置在
不同的管子。
·过滤器应安装在以下接口处:
如有必要,在不同的区域。
·总线电缆(如RS485)和信号电缆必须:
屏蔽
驱动器的电气安装
10kV
权力
变压器
发动机
金属
内阁
交流输入电抗器
金属
内阁
PLC或
米
断路器
滤器
交流输出
核反应堆
>30厘米
>50厘米
逆变器
电机电缆
控制电缆
>20厘米
权力
来源
电缆
逆变器
隔离
变压器
电源电缆
米
图3-44驱动器的安装
·电机电缆应在驱动侧接地,如果:
如果可能,电机和驱动器应接地
分别地
·电机电缆和控制电缆应屏蔽,或
装甲的。屏蔽必须接地,并避免
电缆端部缠绕以改善高频噪声
免疫
·确保板、螺钉和
驱动器的金属外壳;使用齿形垫圈和
导电安装板;
通常,如果存在一些敏感设备,则
在敏感位置安装电源滤波器更具成本效益
设备方面。
3.4.7电力线滤波器的应用
电源滤波器应用于以下设备:
可能会产生强EMI,或设备:
对外部EMI敏感。电源滤波器
应为双向低通滤波器,仅通过
50Hz电流可以流动,高频电流应该
被拒绝。
电力线滤波器的功能
电力线滤波器确保设备能够满足
中的传导发射和传导灵敏度
EMC标准。它还可以抑制
设备
36第3章安装和布线
EV2000系列通用变速驱动用户手册
它可以防止设备产生的电磁干扰:
进入电源线,防止电磁干扰
由电力电缆进入设备产生。
电力电缆滤波器使用中的常见错误
1.电源线过长
机柜内的过滤器应靠近:
输入电源。电力电缆的长度
应该尽可能短。
2.交流电源滤波器的输入和输出电缆为:
太近
输入和输出电缆之间的距离
过滤器应尽可能分开,否则
高频噪声可能耦合在
电缆和旁路过滤器。因此,过滤器将成为
无效。
3.滤波器接地不良
过滤器外壳必须正确接地至
驱动器的金属外壳。为了良好地接地,
使用过滤器上的专用接地端子
圈占地如果使用一根电缆将过滤器连接到
在这种情况下,接地对于高频是无用的
干扰当频率较高时
电缆阻抗,因此几乎没有旁路效应。
过滤器应安装在以下设备的外壳上:
设备确保清除绝缘漆
过滤器外壳和外壳之间的良好连接
接地触点。
3.4.8驱动器的电磁干扰
驱动器的工作原理决定其EMI为:
不可避免的
驱动器通常安装在金属机柜中
金属柜外的仪表受到
轻轻驾驶。如果您:
根据手册连接电缆,EMI
可以有效地抑制。
如果在中安装驱动器和其他控制设备
一个机柜,必须遵守区域规则。支付
注意不同区域、电缆之间的隔离
5X00226G03

5X00226G03
Fig. 3-43 Recommendation of Installation space
Attention:
· Area Ⅰshould 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.
36 Chapter 3 Installation and Wiring
EV2000 Series Universal Variable Speed Drive User Manual
It can prevent the EMI generated by equipment from
entering the power cable, and prevent the EMI
generated by power cable from entering equipment.
Common mistakes in using power cable filter
1. Too long power cable
The filter inside the cabinet should be located near to
the input power source. The length of the power cables
should be as short as possible.
2. The input and output cables of the AC supply filter are
too close
The distance between input and output cables of the
filter should be as far apart as possible, otherwise the
high frequency noise may be coupled between the
cables and bypass the filter. Thus, the filter will become
ineffective.
3. Bad earthing of filter
The filter’s enclosure must be earthed properly to the
metal case of the drive. In order to be earthed well,
make use of a special earthing terminal on the filter’s
enclosure. If you use one cable to connect the filter to
the case, the earthing is useless for high frequency
interference. When the frequency is high, so is the
impedance of cable, hence there is little bypass effect.
The filter should be mounted on the enclosure of
equipment. Ensure to clear away the insulation paint
between the filter case and the enclosure for good
earthing contact.
3.4.8 EMI of The Drive
The drive’s operating theory decides that its EMI is
unavoidable.
The drive is usually installed in a metal cabinet, the
instruments outside the metal cabinet is disturbed by the
drive lightly. The cables are the main EMI source, if you
connect the cables according to the manual, the EMI
can be suppressed effectively.
If you install the drive and other control equipment in
one cabinet, the area rule must be observed. Pay
attention to the isolation between different area, cable
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