Vicruns 2S-0.4G-B, User Manual

Page: 252 / 300

There are two kinds of electromagnetic interference, one is the interference of the
electromagnetic noise in the surrounding environment to the inverter, and the ot-
her is the interference generated by the inverter to the surrounding equipment.
Installation Precautions:
8.3.2 Electromagnetic Interference and Installation Precautions
Chapter 8 EMC (Electromagnetic Compatibility)
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The grounding wire of the inverter and other electrical products should be well
grounded;
The power input and output lines of the inverter and the weak current signal
lines (such as control lines) should not be arranged in parallel as far as poss-
ible, and should be arranged vertically if possible;
It is recommended to use shielded cables for the output power lines of the in-
verter, or use steel pipes to shield the power lines, and the shielding layer
should be grounded reliably. For the leads of the disturbed equipment, it is
recommended to use twisted-pair shielded control lines, and the shielding
layer should be reliably grounded;
For the motor cable whose length exceeds 100m, it is required to install an
output filter or reactor.
Generally, the reason for the electromagnetic influence on the inverter is that a
large number of relays, contactors or electromagnetic brakes are installed near
the inverter. When the inverter is disturbed and malfunctions due to this, it is reco-
mmended to take the following solutions:
8.3.3 How to deal with the interference caused by peripheral electromagnetic
equipment to the inverter
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Nstall a surge suppressor on the device that generates interference;
Install a filter on the input end of the inverter, refer to 8.3.6 for details;
Use shielded cables for the lead wires of the control signal line and detection
line of the inverter and ground the shielding layer reliably.
8.3.4 How to deal with the interference caused by the frequency converter to
the peripheral equipment