CT100 series inverters Installation and wiring
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Figure 3-19 Wiring of common DC bus
Note: If connecting the DC bus directly for two inverters, make sure the models
are the same and power on at the same time.
5. Grounding cable (PE)
To guarantee safety and avoid electric shock or fires, the grounding terminals
(PE) of the inverter should be grounded properly. Thick and short grounding
cables, more than 3.5mm2 multi-strand copper cables should be applied. When
multiple inverters are grounded, it is recommended not to use a common
grounding cable in case of short circuit.
3.8Wiring of control circuit
3.8.1 Precautions
Please apply the multi-core shielded cable or twisted pair to connect the control
terminals. When using the shielded cable (near one side of the inverter), connect
it to the PE terminal of the inverter. Keep the control cable away from the main
circuit and strong power circuit (including power cables, motor cables, relays,
contactors, etc.) more than 20cm. Vertical wiring is recommended instead of
parallel wiring to prevent the inverter malfunction caused by external
interference.
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