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Fig. 3-13 Multi inverters communication
The more inverters connected, the more the communication interference may accure.
Please make wiring as above and do well grounding for inverters and motors, or adopt the
following measures to prevent interference as even above wiring can’t work.
(1) Separately power supply to PC/PLC or isolated the power of PC/PLC.
(2) Use EMIFIL to the wire or reduce carrier frequency properly
3.7 EMC Installation Instruction
Inverter outputs PWM wave, it will produce electromagnetic noise. To reduce the
interference, EMC installation will be introduced in this section from noise suppression, wire
connection, grounding, leakage current and filter of power supply
3.7.1 Noise Suppression
(1) Noise Type
Noise is unavoidable during inverter operation. Its influence over peripheral equipment is
related to the noise type, transmission means, as well as the design, install action, wiring
and grounding of the driving system
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