Shenzhen Hpmont Technology Co., Ltd Chapter 4 Electrical Installation
HD5L Series Controller User Manual ―37―
4.7 Meet EMC Requirement of Installation
4.7.1 Correct EMC Installation
According national standards GB/T12668.3, the controller should meet the two requirements of
electromagnetic interference (EMI) and anti-electromagnetic interference. The international
standards IEC/61800-3 (VVVF drive system part 3: EMC specifications and test methods) are
identical to the national standards GB/T12668.3.
HD5L Series Controllers are designed and produced according to the requirements of
IEC/61800-3. Please install the controller as per the description below so as to achieve good
electromagnetic compatibility (EMC).
In a drive system, the controller, control equipment and sensors are installed in the same cabinet,
the electromagnetic noise should be suppressed at the main connecting points with the EMI filter
and input reactor installed in cabinet to satisfy the EMC requirements.
The most effective but expensive measure to reduce the interference is to isolate the noise
source and the noise receiver, which should be considered in mechanical system design phase.
In driving system, the noise source can be controller, braking unit and contactor. Noise receiver
can be automation equipment, encoder and sensor etc.
The mechanical/system is divided into different EMC areas according to its electrical
characteristics. The recommended installation positions are shown in Figure 4-31.
Figure 4-31 System wiring sketch
HD5L controller
EMI filter
Mechanical system
EMI filter
AC reactor
Manufacturemachines
Area E
Area A: install transformers of control power supply,
control devices and sensor etc.
Power supply control cabinet
Area C
Area A
Area B
Area D
Area F
Motor
Sensor(temperature,
liquidlevel sensor)
Control devices (the
host PC, PLCetc.)
Area B: interfaces of signal and control cables,
correctimmunity level is required.
Area C: install noisesources such as input reactor,
the controller, brakingunit and contactor.
Area D: install output EMI filter and its cable
connectio
n parts.
Area E: power supply.
Area F:installmotorand itscables.
Earth isolated board
4
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